/* ============================================================================
   CalCE — Modern UI/UX stil sistemi.
   Açık + koyu tema, akıcı mikro-etkileşimler, ürün kalitesinde bileşenler.
   Veri-odaklı yapı korunur: tüm mevcut sınıf adları desteklenir.
   ============================================================================ */

/* ----------------------------- Tasarım Token'ları ------------------------- */
:root {
  /* Yüzeyler & metin (açık tema) */
  --bg: #eef2f8;
  --bg-grad: radial-gradient(1200px 600px at 80% -10%, #e2f4f5 0%, transparent 55%),
             radial-gradient(900px 500px at -5% 0%, #e8edf7 0%, transparent 50%),
             linear-gradient(180deg, #f1f4fa 0%, #eef2f8 100%);
  --surface: #ffffff;
  --surface-2: #f7f9fc;
  --surface-3: #eef2f7;
  --border: #e5eaf1;
  --border-2: #d6deea;
  --text: #0f1b2d;
  --text-2: #33425a;
  --muted: #5d6b80;
  --faint: #8b98a9;

  /* Vurgu (kurumsal indigo / mavi) */
  --accent: #4f46e5;
  --accent-strong: #4338ca;
  --accent-2: #3730a3;
  --accent-soft: #eef0fe;
  --accent-soft-2: #dde0fc;
  --accent-grad: linear-gradient(135deg, #6366f1 0%, #4f46e5 55%, #4338ca 100%);
  --header-grad: linear-gradient(125deg, #4f46e5 0%, #3730a3 100%);

  /* Durum renkleri */
  --ok: #15803d; --ok-soft: #e7f7ee; --ok-border: #b7e6c9;
  --warn: #b45309; --warn-soft: #fff6e6; --warn-border: #f1d79a; --warn-text: #6b4f1a;
  --err: #c0362c; --err-soft: #fdecea; --err-border: #f3c2bd; --err-text: #7a2018;

  /* Kod / denklem bloğu */
  --code-bg: #0f172a;
  --code-head: #1c283f;
  --code-border: #243049;
  --code-text: #e2e8f0;
  --code-accent: #a5b4fc;

  /* Gölge / elevation */
  --shadow-sm: 0 1px 2px rgba(15,27,45,.06);
  --shadow: 0 1px 3px rgba(15,27,45,.07), 0 10px 28px -12px rgba(15,27,45,.16);
  --shadow-lg: 0 18px 48px -18px rgba(15,27,45,.28);
  --shadow-accent: 0 10px 26px -10px rgba(79,70,229,.45);
  --ring: 0 0 0 4px rgba(79,70,229,.2);

  /* Ölçek */
  --radius-sm: 8px;
  --radius: 13px;
  --radius-lg: 18px;
  --radius-pill: 999px;

  /* Hareket */
  --ease: cubic-bezier(.4, 0, .2, 1);
  --ease-out: cubic-bezier(.16, 1, .3, 1);

  --header-blur: rgba(255,255,255,.72);

  color-scheme: light;
  font-family: "Inter", ui-sans-serif, system-ui, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-feature-settings: "cv05", "cv11", "ss01";
}

/* ----------------------------- Koyu Tema (Antrasit) ----------------------- */
/* Nötr antrasit gri paleti: mavi/lacivert tonu yok, kurumsal ve ciddi.
   Vurgu rengi grafit/çelik gri ailesinden — monokrom, ölçülü. */
:root[data-theme="dark"] {
  /* Daha derin arka plan + belirgin yüzey kademeleri → kartlar net ayrışır,
     "gri üstüne gri" karmaşası azalır. Kenarlık ve sönük metin kontrastı yükseltildi. */
  --bg: #101218;
  /* Çok hafif indigo + teal parıltı → kanvas tamamen gri kalmaz ama göz yormaz */
  --bg-grad: radial-gradient(1100px 600px at 82% -12%, rgba(129,140,248,.060) 0%, transparent 55%),
             radial-gradient(900px 520px at -8% -5%, rgba(45,212,191,.026) 0%, transparent 52%),
             linear-gradient(180deg, #15171d 0%, #0f1014 100%);
  --surface: #1f242c;
  --surface-2: #181b22;
  --surface-3: #2b313b;
  --border: #393f4a;
  --border-2: #4a515e;
  --text: #eef0f4;
  --text-2: #cbd0d8;
  --muted: #9aa1ad;
  --faint: #757b86;

  /* Vurgu — yumuşak indigo / periwinkle (markanın indigosundan; doygunluğu
     düşük, koyu zeminde göz yormaz). Tamamen gri-beyaz değil. */
  --accent: #aeb6f6;
  --accent-strong: #c6ccfa;
  --accent-2: #dadefc;
  --accent-soft: rgba(150,160,250,.15);
  --accent-soft-2: rgba(150,160,250,.27);
  --accent-grad: linear-gradient(135deg, #9aa3f1 0%, #7c85e6 100%);
  --header-grad: linear-gradient(125deg, #3b4058 0%, #23273a 100%);

  --ok: #3ddba2; --ok-soft: rgba(61,219,162,.13); --ok-border: rgba(61,219,162,.40);
  --warn: #fbbf24; --warn-soft: rgba(251,191,36,.13); --warn-border: rgba(251,191,36,.40); --warn-text: #f6dcab;
  --err: #fb8585; --err-soft: rgba(251,133,133,.13); --err-border: rgba(251,133,133,.40); --err-text: #f9bdb9;

  --code-bg: #14171c;
  --code-head: #1f2329;
  --code-border: #2d323a;
  --code-text: #dde2ea;
  --code-accent: #c2c9d3;

  --shadow-sm: 0 1px 2px rgba(0,0,0,.45);
  --shadow: 0 2px 6px rgba(0,0,0,.40), 0 14px 34px -16px rgba(0,0,0,.62);
  --shadow-lg: 0 22px 54px -20px rgba(0,0,0,.70);
  --shadow-accent: 0 12px 30px -12px rgba(0,0,0,.6);
  --ring: 0 0 0 4px rgba(129,140,248,.32);

  --header-blur: rgba(16,18,22,.72);
  color-scheme: dark;
}

/* Antrasit modda kalan sabit-kodlu mavi tonları nötrle (light dokunulmaz) */
:root[data-theme="dark"] .equation-name::before { background: rgba(190,198,210,.18); }
:root[data-theme="dark"] .btn-primary:hover { box-shadow: 0 16px 34px -12px rgba(0,0,0,.6); }
:root[data-theme="dark"] .brand:hover .brand-mark { box-shadow: 0 14px 30px -10px rgba(0,0,0,.6); }

/* Koyu temada kategori & formül kartlarını belirginleştir: daha açık yüzey +
   güçlü kenarlık → sayfadan net ayrışır; açıklama/ikon kontrastı yükseltilir
   (light tema dokunulmaz). */
:root[data-theme="dark"] .category-card,
:root[data-theme="dark"] .formula-card {
  background: var(--surface-3);
  border-color: var(--border-2);
}
:root[data-theme="dark"] .category-card:hover,
:root[data-theme="dark"] .formula-card:hover {
  border-color: var(--accent-soft-2);
  box-shadow: var(--shadow-lg), inset 0 0 0 1px var(--border-2);
}
:root[data-theme="dark"] .cc-desc,
:root[data-theme="dark"] .fc-desc { color: var(--text-2); }
:root[data-theme="dark"] .cc-cta { color: var(--accent-strong); }
:root[data-theme="dark"] .cc-icon {
  background: var(--accent-soft-2);
  border: 1px solid var(--border-2);
  color: var(--accent-strong);
}
:root[data-theme="dark"] .cc-count,
:root[data-theme="dark"] .fc-cat {
  background: var(--accent-soft-2); color: var(--accent-2);
}

/* ----------------------------- Temel --------------------------------------- */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  background-image: var(--bg-grad);
  background-attachment: fixed;
  color: var(--text);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  transition: background-color .3s var(--ease), color .3s var(--ease);
}
::selection { background: var(--accent-soft-2); color: var(--accent-2); }
:root[data-theme="dark"] ::selection { color: var(--text); }

/* İnce kaydırma çubukları */
* { scrollbar-width: thin; scrollbar-color: var(--border-2) transparent; }
*::-webkit-scrollbar { width: 9px; height: 9px; }
*::-webkit-scrollbar-thumb { background: var(--border-2); border-radius: 999px; border: 2px solid transparent; background-clip: padding-box; }
*::-webkit-scrollbar-thumb:hover { background: var(--faint); }

.muted { color: var(--muted); }
.small { font-size: 12.5px; }

/* ----------------------------- SVG ikonlar -------------------------------- */
.ico-svg { width: 1em; height: 1em; display: inline-block; vertical-align: -.125em; flex-shrink: 0; }
.cc-icon { color: var(--accent); }
.cc-icon .ico-svg { width: 24px; height: 24px; }
.bt-ico { color: var(--accent); display: inline-flex; }
.bt-ico .ico-svg { width: 20px; height: 20px; }
.search-icon .ico-svg { width: 18px; height: 18px; }
.theme-toggle .ico-svg { width: 18px; height: 18px; }
.back-btn .ico-svg { width: 16px; height: 16px; }
.method-badge .ico-svg { width: 13px; height: 13px; }
.solver-note .ico-svg { width: 16px; height: 16px; }
.ac-cat .ico-svg { width: 12px; height: 12px; vertical-align: -.1em; }
.cc-cta .ico-svg { width: 15px; height: 15px; vertical-align: -.2em; }
.disclaimer .ico-svg, .site-footer .ico-svg { width: 14px; height: 14px; vertical-align: -.15em; }

/* ----------------------------- Header ------------------------------------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: var(--header-blur);
  -webkit-backdrop-filter: saturate(1.4) blur(12px);
  backdrop-filter: saturate(1.4) blur(12px);
  border-bottom: 1px solid var(--border);
  color: var(--text);
  padding: 14px clamp(16px, 4vw, 44px);
  display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 12px;
}
/* Marka: sayfanın üst-ortasında dikey kilit (illüstrasyon wordmark + alt açıklama) */
.brand {
  grid-column: 2; justify-self: center;
  display: inline-flex; flex-direction: column; align-items: center; gap: 2px;
  text-decoration: none; color: inherit; border-radius: var(--radius); padding: 2px 8px;
}
.brand:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
.brand-name {
  font-size: clamp(26px, 4.6vw, 33px); font-weight: 800; letter-spacing: -.5px;
  color: var(--text); line-height: 1; white-space: nowrap;
}
/* "i" harfi = pergel: tutamak (nokta) üstte, açılan bacaklar = ölçüm açısı */
.logo-i {
  display: inline-block; position: relative; vertical-align: baseline;
  width: .42em; height: 1em;
}
.compass-i {
  position: absolute; left: 50%; bottom: 0; transform: translateX(-50%);
  width: .61em; height: 1.15em; color: var(--accent); overflow: visible;
  transition: color .18s ease, transform .18s ease;
}
.brand:hover .compass-i { color: var(--accent-strong); transform: translateX(-50%) translateY(-1px); }
.brand-desc {
  margin: 2px 0 0; font-size: clamp(11px, 1.5vw, 12.5px); font-weight: 600;
  letter-spacing: .02em; color: var(--muted); text-align: center;
}

.header-meta {
  grid-column: 3; justify-self: end;
  display: flex; align-items: center; gap: 9px; flex-wrap: wrap; justify-content: flex-end;
}
@media (max-width: 720px) {
  .site-header { grid-template-columns: 1fr; }
  .brand { grid-column: 1; }
  .header-meta { grid-column: 1; justify-self: center; justify-content: center; }
}
.principle {
  font-size: 12px; font-weight: 600; color: var(--muted);
  background: var(--surface-2); border: 1px solid var(--border);
  padding: 6px 12px; border-radius: var(--radius-pill); white-space: nowrap;
}
.formula-count-badge {
  font-size: 12px; font-weight: 700; color: var(--accent-2);
  background: var(--accent-soft); border: 1px solid var(--accent-soft-2);
  padding: 6px 12px; border-radius: var(--radius-pill); white-space: nowrap;
}

/* Tema geçişi */
.theme-toggle {
  width: 38px; height: 38px; border-radius: var(--radius-sm);
  border: 1px solid var(--border); background: var(--surface-2);
  color: var(--muted); cursor: pointer; line-height: 1;
  display: inline-flex; align-items: center; justify-content: center;
  transition: color .2s var(--ease), background .2s var(--ease), border-color .2s var(--ease);
}
.theme-toggle:hover { background: var(--accent-soft); color: var(--accent); border-color: var(--accent-soft-2); }
.theme-toggle:active { transform: translateY(1px); }
.theme-toggle:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.theme-toggle .ico-sun { display: none; }
.theme-toggle .ico-moon { display: inline; }
:root[data-theme="dark"] .theme-toggle .ico-sun { display: inline; }
:root[data-theme="dark"] .theme-toggle .ico-moon { display: none; }

/* Dil seçici — segment kontrol (TR | EN). Seçili dil koyu vurgulanır. */
.lang-switch {
  display: inline-flex; align-items: stretch; height: 38px;
  padding: 3px; gap: 3px;
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  background: var(--surface-2);
}
.lang-opt {
  border: 0; background: transparent; cursor: pointer;
  min-width: 36px; padding: 0 11px;
  border-radius: calc(var(--radius-sm) - 3px);
  font-size: 12.5px; font-weight: 700; letter-spacing: .03em;
  color: var(--muted); line-height: 1;
  display: inline-flex; align-items: center; justify-content: center;
  transition: color .15s var(--ease), background .15s var(--ease), box-shadow .15s var(--ease);
}
.lang-opt:hover { color: var(--accent); }
.lang-opt:active { transform: translateY(1px); }
.lang-opt:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.lang-opt.is-active {
  background: var(--accent); color: #fff; cursor: default;
  box-shadow: var(--shadow-sm);
}
.lang-opt.is-active:hover { color: #fff; }

/* ----------------------------- İçerik ------------------------------------- */
.content { padding: 22px clamp(16px, 4vw, 44px) 48px; max-width: 1680px; margin: 0 auto; }
.panel-intro { margin-bottom: 16px; color: var(--muted); font-size: 15px; }
.panel-intro strong { color: var(--text); }

/* ----------------------------- Arama -------------------------------------- */
.search-section { margin-bottom: 16px; }
.search-wrap { position: relative; max-width: 680px; }
.search-icon {
  position: absolute; left: 16px; top: 50%; transform: translateY(-50%);
  font-size: 16px; opacity: .55; pointer-events: none; z-index: 1;
}
#search {
  width: 100%; border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: 14px 18px 14px 44px; font-size: 15px; background: var(--surface);
  color: var(--text); box-shadow: var(--shadow);
  transition: border-color .2s var(--ease), box-shadow .2s var(--ease), transform .2s var(--ease);
}
#search::placeholder { color: var(--faint); }
#search:focus { outline: none; border-color: var(--accent); box-shadow: var(--ring), var(--shadow); }
#search::-webkit-search-cancel-button { cursor: pointer; }

.autocomplete {
  position: absolute; top: calc(100% + 8px); left: 0; right: 0; z-index: 60;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg); max-height: 400px; overflow-y: auto; padding: 6px;
  animation: acIn .2s var(--ease-out);
}
.ac-item {
  display: flex; flex-direction: column; gap: 5px; padding: 11px 13px;
  cursor: pointer; border-radius: var(--radius-sm);
  transition: background .15s var(--ease);
  animation: popIn .22s var(--ease-out) both;
}
.ac-item:nth-child(2) { animation-delay: .03s; }
.ac-item:nth-child(3) { animation-delay: .06s; }
.ac-item:nth-child(4) { animation-delay: .09s; }
.ac-item:nth-child(n+5) { animation-delay: .12s; }
.ac-item:hover, .ac-item.active { background: var(--accent-soft); }
.ac-name { font-size: 14.5px; font-weight: 600; color: var(--text); }
.ac-name mark { background: var(--accent-soft-2); color: var(--accent-2); border-radius: 4px; padding: 0 2px; }
.ac-meta { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.ac-cat {
  font-size: 11px; font-weight: 700; color: var(--accent-2);
  background: var(--accent-soft); padding: 2px 9px; border-radius: var(--radius-pill); white-space: nowrap;
}
.ac-eq {
  font-size: 12px; color: var(--muted); font-family: ui-monospace, "Cascadia Code", Consolas, monospace;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 100%;
}
.ac-empty { padding: 16px 14px; color: var(--muted); font-size: 14px; }

/* Madde arama paneli — formül aramasıyla aynı görünüm, gövdeye ekli (fixed;
   konum JS'te inputa göre hesaplanır). Uzun listede öğe animasyonu kapalı. */
.sub-ac { z-index: 80; }
.sub-ac .ac-item { animation: none; }
.sub-ac .ac-name { font-size: 14px; }
.sub-ac .ac-meta { gap: 8px; }
.sub-ac .ac-cat { font-family: ui-monospace, "Cascadia Code", Consolas, monospace; font-weight: 600; }

/* ----------------------------- Sekmeler (yapışkan) ------------------------ */
.tabs {
  position: sticky; top: 0; z-index: 40;
  display: flex; gap: 8px; overflow-x: auto;
  padding: 12px 4px; margin: 0 -4px 22px;
  background: var(--header-blur);
  -webkit-backdrop-filter: blur(12px) saturate(1.2);
  backdrop-filter: blur(12px) saturate(1.2);
  border-bottom: 1px solid var(--border);
  scroll-padding: 8px;
}
.tab {
  flex-shrink: 0; display: inline-flex; align-items: center; gap: 8px;
  padding: 9px 15px; border-radius: var(--radius-pill); border: 1px solid var(--border);
  background: var(--surface); color: var(--muted); font: inherit; font-weight: 600; font-size: 13.5px;
  cursor: pointer; white-space: nowrap;
  transition: color .2s var(--ease), background .2s var(--ease), border-color .2s var(--ease), transform .15s var(--ease), box-shadow .2s var(--ease);
}
.tab:hover { color: var(--text); border-color: var(--border-2); transform: translateY(-1px); }
.tab:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.tab .ico { font-size: 15px; }
.tab-count {
  font-size: 11px; font-weight: 700; padding: 1px 8px; border-radius: var(--radius-pill);
  background: var(--surface-3); color: var(--muted);
}
.tab.active {
  background: var(--accent-grad); color: #fff; border-color: transparent;
  box-shadow: var(--shadow-accent); transform: translateY(-1px);
}
.tab.active .tab-count { background: rgba(255,255,255,.28); color: #fff; }

/* ----------------------------- Görünümler --------------------------------- */
.category-view:not([hidden]), .browse-view:not([hidden]), .solve-view:not([hidden]) { animation: viewIn .38s var(--ease-out); }

.view-head { display: flex; align-items: baseline; gap: 12px; margin-bottom: 18px; flex-wrap: wrap; }
.view-title { margin: 0; font-size: 20px; font-weight: 700; }
.view-sub { color: var(--muted); font-size: 14px; }

.browse-head { display: flex; align-items: baseline; gap: 12px; margin-bottom: 18px; }
.browse-title {
  margin: 0; font-size: 20px; font-weight: 800; letter-spacing: -.3px;
  display: inline-flex; align-items: center; gap: 10px;
}
.browse-title .bt-ico { font-size: 22px; }
.browse-count { color: var(--muted); font-size: 14px; font-weight: 600; }

/* ----------------------------- Kart Grid ---------------------------------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
  gap: 16px;
}
/* Kategori kartları: sabit 5 sütun, sayfa kenarlarını kullanır (15 kategori → 3×5).
   Dar ekranlarda kademeli olarak azalır. */
.category-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
}
@media (max-width: 1400px) { .category-grid { grid-template-columns: repeat(4, 1fr); } }
@media (max-width: 1100px) { .category-grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 760px)  { .category-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 520px)  { .category-grid { grid-template-columns: 1fr; } }
.formula-card, .category-card {
  position: relative; overflow: hidden;
  display: flex; flex-direction: column; gap: 11px; text-align: left;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 18px; cursor: pointer; font: inherit; color: inherit;
  transition: transform .22s var(--ease-out), border-color .2s var(--ease), box-shadow .25s var(--ease);
  animation: cardIn .42s var(--ease-out) both;
}
.formula-card::before, .category-card::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: var(--accent-grad); transform: scaleX(0); transform-origin: left;
  transition: transform .3s var(--ease-out);
}
.formula-card:hover, .category-card:hover {
  transform: translateY(-4px); border-color: var(--accent-soft-2);
  box-shadow: var(--shadow-lg);
}
.formula-card:hover::before, .category-card:hover::before { transform: scaleX(1); }
.formula-card:focus-visible, .category-card:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.fc-top { display: flex; align-items: flex-start; justify-content: space-between; gap: 10px; }
.fc-name { font-size: 15.5px; font-weight: 700; color: var(--text); line-height: 1.3; letter-spacing: -.1px; }
.fc-cat {
  font-size: 10px; font-weight: 700; text-transform: uppercase; letter-spacing: .5px;
  color: var(--accent-2); background: var(--accent-soft); padding: 3px 9px;
  border-radius: var(--radius-pill); white-space: nowrap; flex-shrink: 0;
}
.fc-desc {
  margin: 0; color: var(--muted); font-size: 13px; line-height: 1.5; flex: 1;
  display: -webkit-box; -webkit-line-clamp: 2; line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.fc-eq {
  font-family: ui-monospace, "Cascadia Code", Consolas, monospace; font-size: 12.5px;
  color: var(--accent-2); background: var(--surface-2); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 8px 11px; overflow-x: auto; white-space: nowrap;
}

/* Kategori kartı (legacy destek) */
.cc-icon {
  font-size: 24px; width: 46px; height: 46px; flex-shrink: 0;
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--accent-soft); border-radius: 12px;
}
.cc-body { display: flex; flex-direction: column; gap: 6px; flex: 1; }
.cc-head { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.cc-name { font-size: 16.5px; font-weight: 700; color: var(--text); }
.cc-count {
  font-size: 11px; font-weight: 700; color: var(--accent-2); background: var(--accent-soft);
  padding: 3px 9px; border-radius: var(--radius-pill); white-space: nowrap; flex-shrink: 0;
}
.cc-desc { color: var(--muted); font-size: 13px; line-height: 1.45; }
.cc-cta { font-size: 13px; font-weight: 700; color: var(--accent); transition: color .15s; }
.category-card:hover .cc-cta { color: var(--accent-strong); }

/* ----------------------------- Çözüm görünümü ----------------------------- */
.back-btn {
  border: 1px solid var(--border); background: var(--surface); color: var(--muted);
  padding: 9px 17px; border-radius: var(--radius-pill); font: inherit; font-size: 14px; font-weight: 600;
  cursor: pointer; margin-bottom: 18px; display: inline-flex; align-items: center; gap: 6px;
  transition: color .2s var(--ease), border-color .2s var(--ease), transform .15s var(--ease), box-shadow .2s var(--ease);
}
.back-btn:hover { color: var(--accent); border-color: var(--accent); transform: translateX(-2px); box-shadow: var(--shadow-sm); }
.back-btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* Çözüm görünümü odaklı kalsın: geniş içerik alanında ortalanır, aşırı yayılmaz */
.solve-view { max-width: 1200px; margin-inline: auto; }

.grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.02fr);
  gap: 20px;
  align-items: start;
}
@media (max-width: 880px) { .grid { grid-template-columns: 1fr; } }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  padding: 24px;
}
.result-card { position: sticky; top: 76px; }
@media (max-width: 880px) { .result-card { position: static; } }
.card h2 {
  margin: 0 0 16px; font-size: 16px; font-weight: 700;
  padding-bottom: 12px; border-bottom: 1px solid var(--border);
}

.form-header {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  margin-bottom: 14px; padding-bottom: 14px; border-bottom: 1px solid var(--border);
}
.form-header h2 { margin: 0; padding: 0; border: none; font-size: 18px; font-weight: 800; letter-spacing: -.3px; }
.category-badge {
  font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: .5px;
  background: var(--accent-soft); color: var(--accent-2); padding: 5px 11px; border-radius: var(--radius-pill);
  white-space: nowrap;
}
#formula-desc { margin: 0 0 16px; font-size: 14px; color: var(--muted); }

/* Denklem bloğu — kod editörü görünümü (formül adı = başlık çubuğu) */
.equation-name {
  display: flex; align-items: center; gap: 9px;
  background: var(--code-head); color: #cbd5e1;
  font-size: 12px; font-weight: 600; letter-spacing: .2px;
  padding: 9px 14px; border-radius: var(--radius) var(--radius) 0 0;
  border: 1px solid var(--code-border); border-bottom: none;
}
.equation-name::before {
  content: "ƒ(x)";
  font-family: ui-monospace, "Cascadia Code", Consolas, monospace;
  font-size: 11px; font-weight: 700; color: var(--code-accent);
  background: rgba(165,180,252,.16); padding: 2px 7px; border-radius: 6px;
}
.equation-name:empty { display: none; }
.equation {
  background: var(--code-bg); color: var(--code-text);
  border: 1px solid var(--code-border); border-radius: 0 0 var(--radius) var(--radius);
  padding: 14px 16px;
  font-family: ui-monospace, "Cascadia Code", Consolas, monospace; font-size: 14px;
  margin-bottom: 18px; overflow-x: auto;
}
.equation-name:empty + .equation { border-radius: var(--radius); }
.equation code { color: var(--code-accent); }

/* Hedef değişken seçici */
.target-field { margin-bottom: 20px; }
.target-field > label {
  display: block; font-size: 13px; font-weight: 700; color: var(--text-2);
  margin-bottom: 7px;
}
.target-field select {
  border: 1.5px solid var(--accent); border-radius: var(--radius-sm); padding: 12px 14px; font: inherit; font-size: 15px;
  background: var(--accent-soft); color: var(--accent-2); font-weight: 700; width: 100%;
  cursor: pointer; transition: box-shadow .2s var(--ease);
  appearance: none;
  background-image: linear-gradient(45deg, transparent 50%, var(--accent) 50%), linear-gradient(135deg, var(--accent) 50%, transparent 50%);
  background-position: calc(100% - 18px) center, calc(100% - 13px) center;
  background-size: 5px 5px, 5px 5px;
  background-repeat: no-repeat;
}
.target-field select:focus { outline: none; box-shadow: var(--ring); }

/* ----------------------------- Form -------------------------------------- */
form { display: grid; grid-template-columns: 1fr 1fr; gap: 15px 16px; }
@media (max-width: 520px) { form { grid-template-columns: 1fr; } }
.field-group-title {
  grid-column: 1 / -1; font-size: 12px; font-weight: 700; color: var(--accent);
  text-transform: uppercase; letter-spacing: .5px; margin-top: 6px;
}
.field { display: flex; flex-direction: column; gap: 6px; min-width: 0; }
.field.full { grid-column: 1 / -1; }
.field.hidden { display: none; }
.field label { font-size: 13px; font-weight: 600; color: var(--text-2); display: flex; align-items: baseline; gap: 6px; flex-wrap: wrap; }
.field .unit {
  color: var(--muted); font-weight: 600; font-size: 11.5px;
  font-family: ui-monospace, Consolas, monospace;
  background: var(--surface-3); padding: 1px 7px; border-radius: 6px;
}
.field .req { color: var(--err); }
.field .help { font-size: 12px; color: var(--muted); }
.field input, .field select {
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  padding: 11px 13px; font: inherit; font-size: 14.5px;
  background: var(--surface-2); color: var(--text); width: 100%;
  transition: border-color .2s var(--ease), box-shadow .2s var(--ease), background .2s var(--ease);
}
.field input::placeholder { color: var(--faint); }
.field input:focus, .field select:focus {
  outline: none; border-color: var(--accent); background: var(--surface);
  box-shadow: var(--ring);
}
.field input:hover, .field select:hover { border-color: var(--border-2); }

.form-actions { grid-column: 1 / -1; display: flex; gap: 10px; margin-top: 8px; }
.btn {
  border: none; border-radius: var(--radius-sm); padding: 12px 24px; font: inherit; font-size: 15px; font-weight: 700;
  cursor: pointer; transition: transform .14s var(--ease), box-shadow .2s var(--ease), background .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease);
}
.btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.btn-primary {
  position: relative; overflow: hidden;
  background: var(--accent-grad); color: #fff; box-shadow: var(--shadow-accent);
}
.btn-primary::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(120deg, transparent 30%, rgba(255,255,255,.35) 50%, transparent 70%);
  transform: translateX(-130%); transition: transform .6s var(--ease);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 16px 34px -12px rgba(79,70,229,.5); }
.btn-primary:hover::after { transform: translateX(130%); }
.btn-primary:active { transform: translateY(0); }
.btn-primary:disabled { opacity: .65; cursor: progress; transform: none; }
.btn-primary:disabled::after { display: none; }
.btn-ghost { background: transparent; color: var(--muted); border: 1px solid var(--border); }
.btn-ghost:hover { color: var(--accent); border-color: var(--accent); background: var(--accent-soft); }

/* ----------------------------- Sonuç -------------------------------------- */
.result-empty {
  color: var(--muted); font-size: 14.5px; padding: 28px 4px; text-align: center;
  border: 1.5px dashed var(--border-2); border-radius: var(--radius);
}
.result-title { font-size: 15px; font-weight: 700; margin: 0 0 14px; color: var(--accent-2); }

.answer {
  display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap;
  padding: 4px 0 18px; border-bottom: 1px solid var(--border); margin-bottom: 16px;
  animation: viewIn .45s var(--ease-out);
}
.answer-var {
  font-size: 27px; font-weight: 800; letter-spacing: -.5px; color: var(--accent);
}
.answer-eq { font-size: 22px; color: var(--faint); font-weight: 600; }
.answer-val { font-size: 32px; font-weight: 800; color: var(--text); font-variant-numeric: tabular-nums; letter-spacing: -.5px; }
.answer-unit { font-size: 16px; color: var(--muted); font-weight: 600; }

.method-row { margin: 10px 0 12px; }
.method-badge {
  display: inline-flex; align-items: center; gap: 5px;
  font-size: 11.5px; font-weight: 700; padding: 5px 12px; border-radius: var(--radius-pill);
  letter-spacing: .3px; text-transform: uppercase;
}
.method-symbolic { background: var(--ok-soft); color: var(--ok); border: 1px solid var(--ok-border); }
.method-numeric { background: var(--warn-soft); color: var(--warn); border: 1px solid var(--warn-border); }

.solver-note {
  margin: 10px 0 14px; padding: 11px 14px;
  background: var(--warn-soft); border: 1px solid var(--warn-border); border-left: 3px solid var(--warn);
  border-radius: var(--radius-sm); font-size: 13px; color: var(--warn-text);
  display: flex; align-items: center; gap: 9px;
}
.note-icon { font-size: 16px; flex-shrink: 0; }

.rearr { margin: 12px 0; font-size: 13.5px; }
.rearr code {
  display: inline-block; margin-top: 6px; background: var(--surface-2); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 8px 11px;
  font-family: ui-monospace, Consolas, monospace; color: var(--accent-2);
}

details.extra { margin-top: 14px; border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 0 14px; background: var(--surface-2); }
details.extra summary { cursor: pointer; font-weight: 600; font-size: 14px; padding: 12px 0; color: var(--muted); list-style-position: inside; }
details.extra[open] summary { color: var(--accent); }
details.extra ul { margin: 0 0 12px; padding-left: 18px; }
details.extra li { font-size: 13px; color: var(--muted); margin: 4px 0; font-family: ui-monospace, "Cascadia Code", Consolas, monospace; }

.result-table { width: 100%; border-collapse: collapse; margin-bottom: 6px; }
.result-table tr { border-bottom: 1px solid var(--border); }
.result-table tr:last-child { border-bottom: none; }
.result-table td { padding: 10px 4px; font-size: 14px; vertical-align: top; }
.result-table td.key { color: var(--muted); }
.result-table td.val { text-align: right; font-weight: 700; font-variant-numeric: tabular-nums; }
.result-table tr.highlight td { color: var(--accent-2); }
.unit-sm { font-size: 11.5px; color: var(--muted); font-weight: 500; }

.notes { margin: 14px 0 0; padding: 12px 14px; background: var(--warn-soft); border-left: 3px solid var(--warn); border-radius: var(--radius-sm); }
.notes ul { margin: 0; padding-left: 18px; }
.notes li { font-size: 13.5px; color: var(--warn-text); margin: 3px 0; }

.disclaimer {
  margin-top: 18px; padding: 12px 14px; font-size: 12.5px;
  background: var(--accent-soft); color: var(--accent-2);
  border: 1px solid var(--accent-soft-2); border-radius: var(--radius-sm);
}
.error-box {
  padding: 14px 16px; background: var(--err-soft); border: 1px solid var(--err-border); border-left: 3px solid var(--err);
  border-radius: var(--radius-sm); color: var(--err-text); font-size: 14px;
  animation: viewIn .3s var(--ease-out);
}
.error-box strong { display: block; margin-bottom: 4px; }
.error-box ul { margin: 6px 0 0; padding-left: 18px; }

.spinner {
  display: inline-block; width: 15px; height: 15px; border: 2px solid rgba(255,255,255,.4);
  border-top-color: #fff; border-radius: 50%; animation: spin .7s linear infinite; vertical-align: -2px; margin-right: 7px;
}
.spinner-dark {
  display: inline-block; width: 14px; height: 14px; border: 2px solid var(--border-2);
  border-top-color: var(--accent); border-radius: 50%; animation: spin .7s linear infinite; vertical-align: -2px; margin-right: 8px;
}

/* ----------------------------- Teori paneli ------------------------------- */
.theory-card {
  margin-top: 20px; background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden;
}
.theory-summary {
  cursor: pointer; list-style: none; padding: 16px 20px;
  display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap;
  font-weight: 700; color: var(--text); transition: background .15s var(--ease);
}
.theory-summary::-webkit-details-marker { display: none; }
.theory-summary:hover { background: var(--surface-2); }
.theory-title { font-size: 15.5px; }
.theory-hint { font-size: 12.5px; font-weight: 500; color: var(--faint); }
.theory-card[open] .theory-summary { border-bottom: 1px solid var(--border); }
.theory-card[open] .theory-title::after { content: " ▲"; color: var(--faint); font-size: 11px; }
.theory-summary .theory-title::after { content: " ▼"; color: var(--faint); font-size: 11px; }
.theory-body { padding: 8px 20px 20px; animation: viewIn .25s var(--ease-out); }
.theory-loading { color: var(--muted); font-size: 14px; padding: 12px 0; }

.theory-section { margin-top: 18px; }
.theory-section h4 {
  margin: 0 0 10px; font-size: 12px; font-weight: 800; letter-spacing: .5px; text-transform: uppercase;
  color: var(--accent-2); border-bottom: 1px solid var(--border); padding-bottom: 7px;
}
.theory-table { width: 100%; border-collapse: collapse; }
.theory-table tr { border-bottom: 1px solid var(--border); }
.theory-table tr:last-child { border-bottom: none; }
.theory-table td { padding: 9px 6px; font-size: 13.5px; vertical-align: top; }
.tt-term {
  white-space: nowrap; font-weight: 600; color: var(--text-2);
  font-family: ui-monospace, "Cascadia Code", Consolas, monospace; font-size: 12.5px;
}
.tt-mean { color: var(--muted); line-height: 1.5; }
.theory-eq {
  display: block; margin: 6px 0; padding: 9px 12px; font-size: 13px;
  font-family: ui-monospace, "Cascadia Code", Consolas, monospace;
  background: var(--code-bg); color: var(--code-text); border: 1px solid var(--code-border);
  border-radius: var(--radius-sm); overflow-x: auto; white-space: nowrap;
}
.theory-eq:first-of-type { color: var(--code-accent); }
.theory-list { margin: 0; padding-left: 18px; }
.theory-list li { font-size: 13.5px; color: var(--text-2); margin: 6px 0; line-height: 1.5; }

/* ----------------------------- Footer ------------------------------------- */
.site-footer {
  display: flex; flex-direction: column; align-items: center; gap: 12px;
  text-align: center; padding: 18px 24px; color: var(--muted); font-size: 13px;
  border-top: 1px solid var(--border); background: var(--surface);
}
.site-footer .footer-note { margin: 0; max-width: 900px; }
.site-footer strong { color: var(--warn); }
.site-footer code { background: var(--surface-3); padding: 2px 7px; border-radius: 6px; font-size: 12px; color: var(--accent-2); }

/* İletişim / geri bildirim — disclaimer'ın altında ortalı: davet metni + LinkedIn
   ikonu + mail (ikon + adres). Dar ekranda satıra sarar. */
.footer-contact { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 8px 10px; }
.footer-contact-label { color: var(--muted); }
.contact-icon, .contact-mail {
  display: inline-flex; align-items: center; justify-content: center;
  height: 36px; border-radius: var(--radius-sm);
  color: var(--muted); border: 1px solid var(--border); background: var(--surface-2);
  text-decoration: none;
  transition: color .15s var(--ease), border-color .15s var(--ease), background .15s var(--ease);
}
.contact-icon { width: 36px; }
.contact-mail { gap: 7px; padding: 0 12px; font-weight: 600; white-space: nowrap; }
.contact-icon:hover, .contact-mail:hover { color: var(--accent); border-color: var(--accent-soft-2); background: var(--accent-soft); }
.contact-icon:focus-visible, .contact-mail:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.contact-icon .ico-svg { width: 18px; height: 18px; }
.contact-mail .ico-svg { width: 16px; height: 16px; }

/* ----------------------------- Smart Unit System -------------------------- */
/* Header: birim sistemi seçicisi */
.unit-system-select {
  font-size: 12px; font-weight: 700; color: var(--accent-2);
  background: var(--accent-soft); border: 1px solid var(--accent-soft-2);
  padding: 6px 10px; border-radius: var(--radius-pill); cursor: pointer;
  -webkit-appearance: none; appearance: none;
}
.unit-system-select:focus-visible { outline: none; box-shadow: var(--ring); }

/* Giriş alanı + birim seçici (yan yana) */
.input-with-unit { display: flex; gap: 8px; align-items: stretch; }
.input-with-unit input { flex: 1 1 auto; min-width: 0; }
.unit-select {
  flex: 0 0 auto; min-width: 84px; max-width: 130px;
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  background: var(--surface-2); color: var(--text); font-size: 13px; font-weight: 600;
  padding: 0 8px; cursor: pointer; appearance: auto;
}
.unit-select:focus-visible { outline: none; border-color: var(--accent); box-shadow: var(--ring); }

/* Hedef (sonuç) birim seçici */
.target-unit-wrap { display: flex; align-items: center; gap: 8px; margin-top: 8px; }
.target-unit-wrap:empty { display: none; }
.tu-label { font-size: 12.5px; color: var(--muted); font-weight: 600; }

/* Sonuç paneli: SI ikincil satırı */
.si-line { margin: -6px 0 12px; }

/* ----------------------------- Ana sayfa şeritleri (Favoriler / Geçmiş) --- */
.home-strip { margin-bottom: 22px; }
.home-strip[hidden] { display: none; }
.strip-head {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  margin-bottom: 12px;
}
.strip-title {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 14px; font-weight: 800; letter-spacing: -.2px; color: var(--text);
}
.strip-title .ico-svg { width: 16px; height: 16px; color: var(--accent); }
.strip-clear {
  border: 1px solid var(--border); background: var(--surface); color: var(--muted);
  font: inherit; font-size: 12px; font-weight: 600; padding: 5px 12px; border-radius: var(--radius-pill);
  cursor: pointer; transition: color .2s var(--ease), border-color .2s var(--ease), background .2s var(--ease);
}
.strip-clear:hover { color: var(--err); border-color: var(--err-border); background: var(--err-soft); }
.strip-clear:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.strip-grid { display: flex; flex-wrap: wrap; gap: 10px; }

/* Chip (favori / geçmiş öğesi) */
.chip {
  display: inline-flex; align-items: center; gap: 9px; max-width: 100%;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-pill);
  padding: 8px 15px; font: inherit; cursor: pointer; text-align: left;
  box-shadow: var(--shadow-sm);
  transition: transform .16s var(--ease-out), border-color .2s var(--ease), box-shadow .2s var(--ease), background .2s var(--ease);
  animation: popIn .22s var(--ease-out) both;
}
.chip:hover { transform: translateY(-2px); border-color: var(--accent-soft-2); box-shadow: var(--shadow); background: var(--accent-soft); }
.chip:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.chip .ico-svg { width: 14px; height: 14px; color: var(--accent); flex-shrink: 0; }
.chip-name { font-size: 13.5px; font-weight: 700; color: var(--text); white-space: nowrap; }
.chip-meta {
  font-size: 12px; font-weight: 600; color: var(--muted);
  font-variant-numeric: tabular-nums; white-space: nowrap;
  padding-left: 9px; margin-left: 2px; border-left: 1px solid var(--border-2);
}

/* ----------------------------- Favori yıldızı (çözücü başlığı) ------------ */
.form-header-right { display: inline-flex; align-items: center; gap: 10px; }
.fav-toggle {
  width: 36px; height: 36px; border-radius: var(--radius-sm); flex-shrink: 0;
  border: 1px solid var(--border); background: var(--surface-2); color: var(--faint);
  cursor: pointer; display: inline-flex; align-items: center; justify-content: center; line-height: 1;
  transition: color .2s var(--ease), background .2s var(--ease), border-color .2s var(--ease), transform .14s var(--ease);
}
.fav-toggle:hover { color: var(--warn); border-color: var(--warn-border); background: var(--warn-soft); }
.fav-toggle:active { transform: scale(.92); }
.fav-toggle:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.fav-toggle .ico-svg { width: 18px; height: 18px; }
.fav-toggle .ico-star-f { display: none; }
.fav-toggle[aria-pressed="true"] { color: #e8a704; border-color: var(--warn-border); background: var(--warn-soft); }
.fav-toggle[aria-pressed="true"] .ico-star-o { display: none; }
.fav-toggle[aria-pressed="true"] .ico-star-f { display: inline-block; }
:root[data-theme="dark"] .fav-toggle[aria-pressed="true"] { color: var(--warn); }

/* ----------------------------- Sonuç aksiyonları (kopyala / paylaş) ------- */
.result-actions {
  display: flex; flex-wrap: wrap; gap: 8px;
  margin: 14px 0 4px; padding-top: 14px; border-top: 1px solid var(--border);
}
.action-btn {
  display: inline-flex; align-items: center; gap: 7px;
  border: 1px solid var(--border); background: var(--surface-2); color: var(--text-2);
  font: inherit; font-size: 13px; font-weight: 600; padding: 8px 14px; border-radius: var(--radius-sm);
  cursor: pointer; transition: color .18s var(--ease), background .18s var(--ease), border-color .18s var(--ease), transform .12s var(--ease);
}
.action-btn:hover { color: var(--accent); border-color: var(--accent-soft-2); background: var(--accent-soft); }
.action-btn:active { transform: translateY(1px); }
.action-btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.action-btn .ico-svg { width: 15px; height: 15px; }
.action-btn.copied { color: var(--ok); border-color: var(--ok-border); background: var(--ok-soft); }

/* ----------------------------- Yazdırma --------------------------------- */
@media print {
  .site-header, .search-section, .site-footer,
  #back-btn, #back-to-categories, .form-actions, .fav-toggle,
  .result-actions, .theory-hint, .home-strip { display: none !important; }
  body { background: #fff !important; background-image: none !important; color: #000; }
  .content { padding: 0; max-width: none; }
  .solve-view { max-width: none; }
  .grid { display: block; }
  .card, .theory-card {
    box-shadow: none !important; border: 1px solid #ccc; break-inside: avoid;
    margin-bottom: 14px;
  }
  .result-card { position: static !important; }
  .equation, .theory-eq { background: #f4f4f4 !important; color: #000 !important; border-color: #ccc !important; }
  .equation code, .theory-eq, .rearr code { color: #000 !important; }
  .answer-var, .answer-val, .answer-unit { color: #000 !important; }
  a[href]::after { content: ""; }
}

/* ----------------------------- Animasyonlar ------------------------------- */
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes viewIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }
@keyframes cardIn { from { opacity: 0; transform: translateY(12px) scale(.985); } to { opacity: 1; transform: none; } }
@keyframes acIn { from { opacity: 0; transform: translateY(-6px) scale(.99); } to { opacity: 1; transform: none; } }
@keyframes popIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .001ms !important; animation-iteration-count: 1 !important;
    transition-duration: .001ms !important; scroll-behavior: auto !important;
  }
}

/* =====================================================================
   Profesyonel sonuç paneli — risk/uyarı, metadata, kaynaklar, birim
   dönüşümü, yardımcı girdiler (AŞAMA 1 / 3 / 4 / 5). Mevcut tasarım
   token'larını (--ok / --warn / --err / --accent) kullanır; tema-duyarlı.
   ===================================================================== */
.meta-title {
  display: flex; align-items: center; gap: 7px;
  font-weight: 700; font-size: 13.5px; color: var(--text); margin: 0 0 8px;
}
.meta-title .ico-svg { width: 15px; height: 15px; color: var(--accent); }
.meta-subtitle {
  display: flex; align-items: center; gap: 6px;
  font-weight: 600; font-size: 12.5px; color: var(--muted); margin: 12px 0 4px;
}
.meta-subtitle .ico-svg { width: 13px; height: 13px; }

/* Risk / Uyarı listesi — 5 seviye */
.warnings-block { margin: 16px 0; }
.warn-item {
  display: flex; gap: 10px; align-items: flex-start;
  padding: 10px 12px; margin: 8px 0;
  border: 1px solid var(--border); border-left-width: 4px;
  border-radius: var(--radius-sm); background: var(--surface-2);
}
.warn-ico { flex: 0 0 auto; margin-top: 1px; }
.warn-ico .ico-svg { width: 17px; height: 17px; }
.warn-body { min-width: 0; }
.warn-msg { font-size: 13.5px; color: var(--text); line-height: 1.45; }
.warn-src {
  font-size: 11.5px; color: var(--faint); margin-top: 5px;
  display: flex; align-items: center; gap: 5px; flex-wrap: wrap;
}
.warn-src .ico-svg { width: 12px; height: 12px; flex: 0 0 auto; }

.warn-info    { border-left-color: var(--accent); background: var(--accent-soft); }
.warn-info    .warn-ico { color: var(--accent); }
.warn-success { border-left-color: var(--ok); background: var(--ok-soft); }
.warn-success .warn-ico { color: var(--ok); }
.warn-caution { border-left-color: var(--warn); background: var(--warn-soft); }
.warn-caution .warn-ico { color: var(--warn); }
.warn-warning { border-left-color: var(--warn); background: var(--warn-soft); }
.warn-warning .warn-ico { color: var(--warn); }
.warn-warning .warn-msg { font-weight: 600; }
.warn-danger  { border-left-color: var(--err); background: var(--err-soft); }
.warn-danger  .warn-ico { color: var(--err); }
.warn-danger  .warn-msg { font-weight: 600; color: var(--err-text); }

/* Mühendislik yorumu + varsayım/geçerlilik/sınırlama */
.meta-note {
  margin: 14px 0; padding: 12px 14px;
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  background: var(--surface-2);
}
.meta-note p { margin: 0; font-size: 13.5px; color: var(--muted); line-height: 1.5; }
.meta-sec { margin: 4px 0 10px; }
.meta-list { margin: 4px 0 0; padding-left: 18px; }
.meta-list li {
  font-size: 13px; color: var(--muted); margin: 4px 0; line-height: 1.45;
  font-family: inherit;   /* details.extra li monospace kuralını ez */
}
.meta-details .meta-sec p { font-size: 13px; color: var(--muted); margin: 4px 0; line-height: 1.45; }

/* Kaynaklar / Referanslar + doğrulama rozeti */
.ref-badge {
  display: inline-block; font-size: 10.5px; font-weight: 700;
  padding: 1px 7px; border-radius: var(--radius-pill);
  vertical-align: middle; letter-spacing: .02em;
}
.ref-unverified { color: var(--warn-text); background: var(--warn-soft); border: 1px solid var(--warn-border); }
.ref-note { display: flex; align-items: flex-start; gap: 6px; margin: 4px 0 10px; }
.ref-note .ico-svg { width: 13px; height: 13px; flex: 0 0 auto; margin-top: 2px; color: var(--warn); }
.ref-list { margin: 0 0 12px; padding-left: 18px; }
.ref-list li {
  font-size: 12.5px; color: var(--muted); margin: 6px 0; line-height: 1.4;
  font-family: inherit;   /* details.extra li monospace kuralını ez */
}
.ref-title { font-weight: 600; color: var(--text); }
.ref-bits { color: var(--faint); }
.ref-link { text-decoration: none; color: var(--accent); font-weight: 700; }

/* Girilen değerler + SI dönüşüm tablosu (AŞAMA 4) */
.conv-table thead th {
  font-size: 11px; text-transform: uppercase; letter-spacing: .04em;
  color: var(--faint); font-weight: 700; text-align: right; padding: 4px;
}
.conv-table thead th:first-child { text-align: left; }
.conv-table td.si-changed { color: var(--accent); }
.unit-sm { font-size: 11px; color: var(--faint); font-weight: 500; }

/* Yardımcı (opsiyonel) girdiler — denkleme girmez, uyarı için (AŞAMA 5) */
.aux-inputs {
  grid-column: 1 / -1; margin-top: 4px; padding: 12px 14px;
  border: 1px dashed var(--border-2); border-radius: var(--radius-sm);
  background: var(--surface-2);
  display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 12px 16px;
}
.aux-head {
  grid-column: 1 / -1; display: flex; align-items: center; gap: 7px;
  font-size: 12.5px; font-weight: 600; color: var(--muted);
}
.aux-head .ico-svg { width: 14px; height: 14px; }
.aux-tag {
  font-size: 10.5px; font-weight: 700; color: var(--accent-2);
  background: var(--accent-soft); padding: 1px 7px; border-radius: var(--radius-pill);
}

/* ===================================================================
   PROPERTY DATABASE (Madde Özellikleri) — ana sekme
   =================================================================== */
/* Ana sekme çubuğu (segmented control) */
.mode-tabs {
  display: flex; gap: 6px; width: fit-content; max-width: 100%;
  margin: 0 auto 22px; padding: 5px;
  background: var(--surface-2); border: 1px solid var(--border);
  border-radius: var(--radius-pill); box-shadow: var(--shadow-sm);
  flex-wrap: wrap; justify-content: center;
}
.mode-tab {
  display: inline-flex; align-items: center; gap: 8px;
  border: 0; background: transparent; color: var(--muted);
  font: inherit; font-weight: 600; font-size: .92rem;
  padding: 9px 18px; border-radius: var(--radius-pill);
  cursor: pointer; transition: color .18s var(--ease), background .18s var(--ease), box-shadow .18s var(--ease);
}
.mode-tab .ico-svg { width: 18px; height: 18px; }
.mode-tab:hover { color: var(--text-2); }
.mode-tab.is-active {
  background: var(--surface); color: var(--accent-strong); box-shadow: var(--shadow-sm);
}
.mode-tab:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* PDB ana sayfa / modül başlıkları */
.pdb-head { margin-bottom: 18px; }
.pdb-global-note { display: flex; align-items: flex-start; gap: 7px; margin-top: 22px; }
.pdb-global-note .ico-svg { width: 15px; height: 15px; flex: 0 0 auto; margin-top: 1px; }

/* Alt satır: bilgi notu solda, "Veri Kaynakları" sağda ince/sönük bağlantı olarak
   (ana kart ızgarasından ayrıldı; göze çarpmadan erişilebilir kalır). */
.pdb-home-foot { margin-top: 22px; display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.pdb-home-foot .pdb-global-note { margin-top: 0; flex: 1 1 320px; }
.pdb-sources-link {
  display: inline-flex; align-items: center; gap: 6px; white-space: nowrap;
  color: var(--faint); font-size: 12px; font-weight: 600; text-decoration: none; opacity: .85;
  transition: color .15s var(--ease), opacity .15s var(--ease);
}
.pdb-sources-link .ico-svg { width: 13px; height: 13px; }
.pdb-sources-link:hover { color: var(--accent); opacity: 1; }
.pdb-sources-link:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 4px; }
.pdb-module-head { display: flex; align-items: center; gap: 14px; margin-bottom: 18px; }
.pdb-module-head .bt-ico { color: var(--accent); }
.pdb-module-head .bt-ico .ico-svg { width: 30px; height: 30px; }
.pdb-module-head .browse-title { margin: 0; }
.pdb-loading { display: flex; align-items: center; gap: 10px; color: var(--muted); padding: 30px 6px; }

/* Arama paneli */
.pdb-search-card .form-actions { margin-top: 4px; }
.pdb-panel-title {
  display: flex; align-items: center; gap: 8px; margin: 0 0 14px;
  font-size: 1rem; font-weight: 700; color: var(--text);
}
.pdb-panel-title .ico-svg { width: 18px; height: 18px; color: var(--accent); }

/* Kaynaklar bölümü — sonucun altında; mavi "Kaynaklar" butonuna tıklanınca açılır.
   Kaynak seçimi kullanıcıya sorulmaz; kullanılan kaynak/denklem/varsayım burada gösterilir. */
.pdb-sources-sec { margin-top: 14px; }
.pdb-sources-sec > summary.pdb-sources-btn {
  display: inline-flex; align-items: center; gap: 8px;
  list-style: none; cursor: pointer; user-select: none;
  padding: 9px 18px; border-radius: var(--radius-pill);
  background: var(--accent-grad); color: #fff;
  font-weight: 700; font-size: .88rem; box-shadow: var(--shadow-accent);
  transition: transform .15s var(--ease), box-shadow .15s var(--ease);
}
.pdb-sources-sec > summary.pdb-sources-btn::-webkit-details-marker { display: none; }
.pdb-sources-sec > summary.pdb-sources-btn:hover { transform: translateY(-1px); }
.pdb-sources-sec > summary.pdb-sources-btn .ico-svg { width: 15px; height: 15px; }
.pdb-sources-body {
  margin-top: 10px; padding: 12px 14px;
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  background: var(--surface-2);
}
.pdb-sources-body .meta-sec + .meta-sec { margin-top: 10px; }
.pdb-sources-body p { margin: 4px 0; font-size: .86rem; color: var(--text-2); line-height: 1.5; }
.pdb-sources-body code { font-size: .84rem; }
.pdb-src-line { margin: 4px 0; }

/* Sonuç kartı — rozetler */
.pdb-answer .answer-var { font-weight: 700; color: var(--text); }
.pdb-badges { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin: 2px 0 14px; }
.src-badge {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: .8rem; font-weight: 600; padding: 4px 11px;
  border-radius: var(--radius-pill);
  background: var(--accent-soft); color: var(--accent-strong); border: 1px solid var(--accent-soft-2);
}
.src-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); }
.src-dot.src-manual { background: var(--warn); }
.src-dot.src-database { background: var(--ok); }
.pdb-ref-verified { color: var(--ok); background: var(--ok-soft); border: 1px solid var(--ok-border); }
.pdb-ref-needs    { color: var(--warn-text); background: var(--warn-soft); border: 1px solid var(--warn-border); }
.pdb-ref-est      { color: var(--accent-strong); background: var(--accent-soft); border: 1px solid var(--accent-soft-2); }
.pdb-ref-unavail  { color: var(--muted); background: var(--surface-3); border: 1px solid var(--border); }
.pdb-substance-tag { margin-left: auto; }

.pdb-method { font-size: .88rem; color: var(--text-2); margin: 0 0 12px; }
.pdb-conditions {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 8px 16px; margin: 4px 0 14px;
}
.pdb-kv { display: flex; flex-direction: column; gap: 2px; }
.pdb-kv .key { font-size: 11px; font-weight: 700; color: var(--faint); text-transform: uppercase; letter-spacing: .03em; }
.pdb-kv .val { font-size: .94rem; color: var(--text); font-weight: 500; }
.pdb-notes { display: flex; flex-direction: column; gap: 7px; margin: 6px 0 14px; }
.pdb-note {
  display: flex; align-items: flex-start; gap: 8px;
  font-size: .86rem; color: var(--text-2);
  background: var(--surface-2); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 8px 11px;
}
.pdb-note .ico-svg { width: 15px; height: 15px; flex: 0 0 auto; margin-top: 1px; color: var(--accent); }

/* Veri bulunamadı (unavailable) */
.pdb-unavailable {
  border: 1px dashed var(--warn-border); background: var(--warn-soft);
  border-radius: var(--radius); padding: 16px 18px;
}
.pdb-unavail-head {
  display: flex; align-items: center; gap: 8px; font-weight: 700; color: var(--warn-text); margin-bottom: 6px;
}
.pdb-unavail-head .ico-svg { width: 18px; height: 18px; }
.pdb-unavailable .pdb-kv { margin-top: 8px; flex-direction: row; gap: 8px; align-items: baseline; }

/* Data Sources & Doğrulama sayfası */
/* Güven/doğrulama mesajı şeridi (kartların üstünde). */
.src-intro {
  display: flex; align-items: flex-start; gap: 9px;
  font-size: .92rem; line-height: 1.55; color: var(--text-2);
  background: var(--accent-soft); border: 1px solid var(--accent-soft-2);
  border-radius: var(--radius-sm); padding: 12px 15px; margin-bottom: 18px;
}
.src-intro .ico-svg { width: 17px; height: 17px; flex: 0 0 auto; margin-top: 2px; color: var(--accent); }

/* Masaüstü: grid (eşit yükseklik); mobil: tek sütun. */
.src-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 18px; align-items: stretch; }
.src-card { display: flex; flex-direction: column; gap: 11px; height: 100%; }
/* Rozet (kategori): kartın en üstünde, adın üstüne squeeze etmesin diye ayrı satırda. */
.src-type-tag {
  align-self: flex-start;
  font-size: 11.5px; font-weight: 700; color: var(--accent-2);
  background: var(--accent-soft); border: 1px solid var(--accent-soft-2);
  padding: 3px 11px; border-radius: var(--radius-pill); white-space: nowrap; letter-spacing: .01em;
}
.src-name { font-size: 1.18rem; font-weight: 700; color: var(--text); line-height: 1.25; margin: 0; }
.src-role { font-size: .95rem; font-weight: 600; color: var(--text-2); line-height: 1.4; }
.src-role-key { color: var(--faint); font-weight: 700; margin-right: 2px; }
.src-role-key::after { content: ":"; }
.src-desc { font-size: .92rem; color: var(--muted); line-height: 1.6; margin: 0; }
.src-block { display: flex; flex-direction: column; gap: 7px; }
.src-sub { font-size: 12.5px; font-weight: 700; color: var(--faint); text-transform: uppercase; letter-spacing: .03em; }
.pill-row { display: flex; flex-wrap: wrap; gap: 7px; }
.pill {
  font-size: 12.5px; font-weight: 600; color: var(--text-2);
  background: var(--surface-3); border: 1px solid var(--border);
  padding: 3px 11px; border-radius: var(--radius-pill);
}
.src-lims.meta-list { padding-left: 18px; }
.src-lims.meta-list li { font-size: 13.5px; line-height: 1.5; }
.src-foot {
  display: flex; align-items: center; gap: 6px;
  margin-top: auto; padding-top: 12px; border-top: 1px solid var(--border);
}
.src-foot .ref-link { font-size: .92rem; }

@media (max-width: 560px) {
  .src-grid { grid-template-columns: 1fr; }
}

/* Placeholder (hazırlanıyor) modülü */
.pdb-placeholder { display: flex; flex-direction: column; gap: 14px; }
.pdb-ph-badge {
  display: inline-flex; align-items: center; gap: 8px; align-self: flex-start;
  font-size: .9rem; font-weight: 700; color: var(--accent-strong);
  background: var(--accent-soft); border: 1px solid var(--accent-soft-2);
  padding: 6px 13px; border-radius: var(--radius-pill);
}
.pdb-ph-badge .ico-svg { width: 16px; height: 16px; }
.pdb-ph-body { color: var(--text-2); font-size: .95rem; line-height: 1.6; }
.pdb-ph-body ul { margin: 8px 0 0; padding-left: 20px; }
.pdb-ph-body li { margin: 4px 0; }
.pdb-ph-body p { margin: 0; }

/* Modül bilgi şeridi (ör. Phase: VLE/Henry yakında) */
.pdb-info-banner {
  display: flex; align-items: flex-start; gap: 8px;
  font-size: .88rem; color: var(--text-2);
  background: var(--accent-soft); border: 1px solid var(--accent-soft-2);
  border-radius: var(--radius-sm); padding: 10px 13px; margin-bottom: 16px;
}
.pdb-info-banner .ico-svg { width: 16px; height: 16px; flex: 0 0 auto; margin-top: 1px; color: var(--accent); }

/* Sonuç kartı — denklem + ek katsayı satırları (Antoine) */
.pdb-eq { margin: 0 0 12px; }
.pdb-eq code {
  display: inline-block; font-size: .86rem; color: var(--code-accent);
  background: var(--code-bg); border: 1px solid var(--code-border);
  border-radius: var(--radius-sm); padding: 6px 10px;
}
.pdb-extra { margin: 4px 0 14px; }
.pdb-extra .meta-subtitle { display: flex; align-items: center; gap: 7px; font-size: 12px; font-weight: 700; color: var(--faint); text-transform: uppercase; letter-spacing: .03em; margin-bottom: 8px; }
.pdb-extra .meta-subtitle .ico-svg { width: 14px; height: 14px; color: var(--accent); }

/* Akışkandan otomatik doldur paneli (hesaplama modüllerinde) */
.property-fill {
  margin: 0 0 14px; padding: 12px 14px;
  border: 1px solid var(--accent-soft-2); border-radius: var(--radius-sm);
  background: var(--accent-soft);
}
.pf-head { display: flex; align-items: center; gap: 7px; font-size: 13px; font-weight: 700; color: var(--accent-strong); margin-bottom: 10px; }
.pf-head .ico-svg { width: 16px; height: 16px; }
.pf-row { display: flex; flex-wrap: wrap; gap: 8px; align-items: stretch; }
.pf-row > #pf-fluid { flex: 1 1 140px; min-width: 120px; padding: 8px 10px; border: 1px solid var(--border); border-radius: var(--radius-sm); background: var(--surface); color: var(--text); font: inherit; font-size: .9rem; }
.pf-row .input-with-unit { flex: 1 1 130px; }
.pf-row .input-with-unit input { width: 100%; padding: 8px 10px; border: 1px solid var(--border); border-radius: var(--radius-sm); background: var(--surface); color: var(--text); font: inherit; font-size: .9rem; }
.pf-row #pf-fill { flex: 0 0 auto; white-space: nowrap; }
.pf-fills { margin-top: 8px; }
.pf-status { display: flex; flex-wrap: wrap; gap: 10px 16px; margin-top: 10px; }
.pf-status:empty { margin-top: 0; }
.pf-ok, .pf-fail { display: inline-flex; align-items: center; gap: 6px; font-size: .86rem; }
.pf-ok { color: var(--text); }
.pf-ok .ico-svg { color: var(--ok); width: 15px; height: 15px; }
.pf-fail { color: var(--warn-text); }
.pf-fail .ico-svg { color: var(--warn); width: 15px; height: 15px; }
.pf-note { flex-basis: 100%; margin-top: 2px; }

/* Mixture — bileşen tablosu */
.mix-row {
  display: grid; grid-template-columns: 1fr 0.7fr 0.6fr 34px; gap: 8px; align-items: center; margin-bottom: 8px;
}
.mix-row.phase-row { grid-template-columns: 1fr 0.8fr 34px; }
.mix-row.phase-man-row { grid-template-columns: 1fr 0.55fr 0.7fr 0.55fr 34px; }
#ph-comp-block.hidden, #ph-add.hidden, #ph-man-comp-block.hidden, #ph-man-note.hidden { display: none; }
.ph-abc-grid { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 8px; }
.ph-abc-grid.two { grid-template-columns: 1fr 1fr; }
.ph-abc-grid input {
  width: 100%; padding: 8px 10px; border: 1px solid var(--border); border-radius: var(--radius-sm);
  background: var(--surface); color: var(--text); font: inherit; font-size: .9rem;
}
.ph-abc-grid input:focus { outline: none; border-color: var(--accent); box-shadow: var(--ring); }

/* Phase Equilibrium — Txy/Pxy SVG diyagramı (tema değişkenleriyle) */
.pdb-chart { width: 100%; height: auto; margin: 10px 0 4px; }
.pdb-chart-bg { fill: var(--surface-2); stroke: var(--border); }
.pdb-chart-grid { stroke: var(--border); stroke-width: 0.6; opacity: 0.7; }
.pdb-chart-tick, .pdb-chart-axis { fill: var(--muted); font-size: 11px; font-family: ui-monospace, Consolas, monospace; }
.pdb-chart-axis { font-size: 12px; fill: var(--text-2); }
.pdb-chart-line { fill: none; stroke-width: 2; stroke-linejoin: round; }
.pdb-chart-bubble { stroke: var(--accent, #2563eb); }
.pdb-chart-dew { stroke: #d97706; }
.mix-row-head { margin-bottom: 6px; }
.mix-row-head span { font-size: 11px; font-weight: 700; color: var(--faint); text-transform: uppercase; letter-spacing: .03em; }
.mix-row input {
  width: 100%; padding: 8px 10px; border: 1px solid var(--border); border-radius: var(--radius-sm);
  background: var(--surface); color: var(--text); font: inherit; font-size: .9rem;
}
.mix-row input:focus { outline: none; border-color: var(--accent); box-shadow: var(--ring); }
.mix-del {
  display: inline-flex; align-items: center; justify-content: center;
  width: 34px; height: 34px; border: 1px solid var(--border); border-radius: var(--radius-sm);
  background: var(--surface-2); color: var(--muted); cursor: pointer; transition: all .15s var(--ease);
}
.mix-del:hover { color: var(--err); border-color: var(--err-border); background: var(--err-soft); }
.mix-del .ico-svg { width: 15px; height: 15px; }
.mix-result-table { width: 100%; margin: 8px 0 14px; }
.mix-result-table th { font-size: 11px; font-weight: 700; color: var(--faint); text-transform: uppercase; letter-spacing: .03em; text-align: left; padding: 4px 8px; border-bottom: 1px solid var(--border); }
.mix-result-table td { padding: 6px 8px; border-bottom: 1px solid var(--border); font-size: .9rem; }

@media (max-width: 560px) {
  .pdb-substance-tag { margin-left: 0; }
  .mix-row { grid-template-columns: 1fr 0.7fr 0.6fr 30px; gap: 5px; }

  /* Footer: dar ekranda disclaimer ortalı, davet metni + iletişim altında;
     dokunma hedefleri ~44px (dev0.19 mobil hedefleriyle uyumlu). */
  .site-footer { gap: 12px; padding: 18px 16px; }
  .contact-icon, .contact-mail { height: 44px; }
  .contact-icon { width: 44px; }

  /* Ana sekme anahtarı (Mühendislik Hesaplamaları | Madde Özellikleri):
     mobilde pill içinde 2 satıra sarmak yerine tam genişlikte, eşit iki hücreli,
     ikon üstte modern segment kontrol — etiketler ortalı, gerekirse alta sarar. */
  .mode-tabs {
    width: 100%; display: grid; grid-template-columns: 1fr 1fr;
    gap: 6px; padding: 6px; border-radius: var(--radius);
  }
  .mode-tab {
    flex-direction: column; gap: 7px; justify-content: center; text-align: center;
    padding: 13px 8px; min-height: 68px;
    font-size: .82rem; font-weight: 700; line-height: 1.22;
    border: 1px solid transparent; border-radius: calc(var(--radius) - 3px);
  }
  .mode-tab .ico-svg { width: 23px; height: 23px; }
  .mode-tab.is-active { box-shadow: var(--shadow-sm); border-color: var(--accent-soft-2); }

  /* iOS Safari, font-size < 16px olan bir alana odaklanınca sayfayı otomatik
     yakınlaştırır (rahatsız edici). Mobilde tüm metin girişlerini 16px'e sabitle. */
  #search,
  .field input, .field select,
  .target-field select,
  .input-with-unit input, .unit-select,
  .pf-row > #pf-fluid, .pf-row .input-with-unit input,
  .mix-row input { font-size: 16px; }

  /* Dokunma hedefleri en az ~44px; başlık dikeyde biraz daralsın. */
  .site-header { padding: 10px 16px; }
  .theme-toggle { width: 42px; height: 42px; }
  .lang-switch { height: 42px; }
  .unit-system-select { min-height: 40px; }
  .btn { padding: 13px 22px; }
  /* Geniş sonuç/dönüşüm tabloları taşma yerine yatay kaydırılsın. */
  .result-table, .conv-table, .mix-result-table {
    display: block; overflow-x: auto; max-width: 100%; -webkit-overflow-scrolling: touch;
  }
  /* Teori "Terimler" tablosu: dar ekranda terim sütunu (nowrap, monospace)
     açıklamayı kenardan taşırıyordu. Yatay kaydırma yerine her terimi dikey
     istifle — terim üstte tam genişlikte (sarabilir), anlamı hemen altında. */
  .theory-table, .theory-table tbody, .theory-table tr, .theory-table td { display: block; width: 100%; }
  .theory-table tr { padding: 9px 0; }
  .theory-table td { padding: 0; }
  .tt-term { white-space: normal; margin-bottom: 4px; }
  .tt-mean { font-size: 13px; }
}

/* Örnek koşul/kaynak notu (AŞAMA 2 — "Örnek Doldur" sonrası bağlam) */
.example-note {
  grid-column: 1 / -1; margin-top: 10px; padding: 10px 12px;
  border: 1px solid var(--border); border-left: 3px solid var(--accent);
  border-radius: var(--radius-sm); background: var(--accent-soft);
  font-size: 12.5px; color: var(--muted); line-height: 1.55;
}
.example-note strong { color: var(--text); }
.example-note .ex-src { color: var(--faint); font-size: 11.5px; }
.example-note .ex-src .ico-svg { width: 12px; height: 12px; vertical-align: -.12em; }

/* Bilimsel alt-indis gösterimi (sci()) — okunabilir boyut/hizalama */
.warn-msg sub, .meta-note sub, .meta-list sub, .fc-desc sub,
#formula-desc sub, .example-note sub, .meta-sec sub {
  font-size: 0.72em; line-height: 0;
}