/* ============================================================================
   BAİBÜ EBP - Etkinlik Başvuru Platformu
   Tasarım Sistemi

   Kaynak: Sample/ klasöründeki "Steep" referansının tasarım DNA'sı.
   Birebir kopya değildir; kurumsal kimlik ve platformun anlamsal
   durum ihtiyaçları için uyarlanmıştır.

   İlkeler
   -------
   · Editorial sükûnet: neredeyse akromatik yüzey, rasyonlanmış renk
   · Serif display + sans gövde; serif DAİMA weight 400
   · Büyük yumuşak radius (kart 24 / yükseltilmiş 20 / girdi 16 / buton pill)
   · Gölge istisnadır — yalnızca yüzen öğeler gölge hak eder
   · Kontrast yerine ton farkıyla ritim
   · Tek tema (açık). Referans light-only'dir.
   ============================================================================ */

/* ============================================================================
   1. TOKENS - RENK
   ============================================================================ */

:root {
  /* Header çubuğunun SABİT yüksekliği. Bunu asla --header-height'e bağlama:
     app.js her scroll karesinde ölçtüğü header.offsetHeight değerini
     --header-height'e yazar; header'ın yüksekliği de o değişkene bağlı olursa
     geri besleme döngüsü oluşur ve header kaydırdıkça büyüyerek ekranı kaplar. */
  --header-bar-h: 72px;

  /* app.js tarafından yayınlanan ölçülmüş header yüksekliği. Yalnızca BAŞKA
     yapışkan öğelerin header'ın altına hizalanması için okunur. */
  --header-height: 72px;

  /* ── Mürekkep ve kâğıt ───────────────────────────────────────────── */
  --color-ink: #141a22;
  --color-ink-soft: #2b3440;
  --color-paper: #ffffff;

  /* ── Metin ───────────────────────────────────────────────────────── */
  --color-text-primary: #141a22;
  --color-text-secondary: #5f6b7c;
  --color-text-tertiary: #8b94a3;
  --color-text-muted: #a8b0bd;

  /* ── Yüzeyler (ton farkıyla katman) ──────────────────────────────── */
  --color-bg-canvas: #ffffff;
  --color-bg-surface: #fafbfc;
  --color-bg-elevated: #f4f5f7;
  --color-bg-ink: #141a22;

  --color-border: #e6e9ee;
  --color-border-light: #f0f2f5;
  --color-border-strong: #d3d8e0;

  /* ── Aksan 1 — Mürekkep Lacivert (kurumsal güven) ────────────────── */
  --color-primary: #1d3f72;
  --color-primary-dark: #17335d;
  --color-primary-light: #2f5794;
  --color-primary-lighter: #eaf0f9;
  --color-primary-line: #c7d6ea;
  --color-primary-ink: #12294a;

  /* ── Aksan 2 — Arşiv Kumu (editorial sıcaklık, nadir) ────────────── */
  --color-secondary: #f3e7d6;
  --color-secondary-ink: #6b4423;
  --color-secondary-line: #e3cfb4;

  /* ── Anlamsal durum renkleri (desatüre, editorial) ───────────────── */
  --color-success: #1c6b4b;
  --color-success-soft: #e6f2ec;
  --color-success-line: #bcdccc;

  --color-warning: #8a5a10;
  --color-warning-soft: #fbf1e0;
  --color-warning-line: #ecd9b4;

  --color-error: #9b2c2c;
  --color-error-soft: #fbeced;
  --color-error-line: #f0cdd0;

  --color-info: #1d4f72;
  --color-info-soft: #e8f1f7;
  --color-info-line: #c2d9e8;

  --color-neutral: #5f6b7c;

  /* ── Odak halkası ────────────────────────────────────────────────── */
  --color-focus: #1d3f72;
  --focus-ring: 0 0 0 4px rgba(29, 63, 114, 0.24);
}

/* ============================================================================
   2. TOKENS - TİPOGRAFİ
   ============================================================================ */

:root {
  /* Harici font CDN'i kasıtlı olarak kullanılmaz (Bölüm 0: kurumsal ağda dış
     bağlantı kesilse bile temel arayüz çalışmalıdır). Yalnızca sistem ve
     yaygın kurulu yığınlar; ilk sırada bulunan varsa o kullanılır. */
  --font-serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia,
    "Times New Roman", ui-serif, serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;

  /* Ölçek — büyüdükçe sıkışan tracking (referansın imzası) */
  --text-xs: 12px;
  --text-sm: 14px;
  --text-base: 15px;
  --text-lg: 17px;
  --text-xl: 20px;
  --text-2xl: 26px;
  --text-3xl: 36px;
  --text-4xl: 44px;
  --text-5xl: 60px;
  --text-6xl: 80px;

  --line-tight: 1.15;
  --line-snug: 1.25;
  --line-normal: 1.45;
  --line-relaxed: 1.6;

  --tracking-display: -0.028em;
  --tracking-heading: -0.019em;
  --tracking-title: -0.011em;
  --tracking-label: 0.06em;

  --weight-light: 400;
  --weight-normal: 400;
  --weight-medium: 500;
  --weight-semibold: 560;
  --weight-bold: 600;
}

/* ============================================================================
   3. TOKENS - BOŞLUK, ŞEKİL, HAREKET
   ============================================================================ */

:root {
  --space-0: 0;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;
  --space-20: 80px;
  --space-24: 96px;

  --radius-xs: 6px;
  --radius-sm: 10px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-2xl: 24px;
  --radius-3xl: 32px;
  --radius-pill: 9999px;

  /* İçerik kartlarında gölge YOKTUR; yalnızca yüzen öğeler taşır. */
  --shadow-hairline: 0 0 0 1px rgba(20, 26, 34, 0.06);
  --shadow-float: 0 0 0 1px rgba(20, 26, 34, 0.05),
    0 18px 28px -12px rgba(20, 26, 34, 0.14),
    0 6px 10px -6px rgba(20, 26, 34, 0.08);
  --shadow-overlay: 0 0 0 1px rgba(20, 26, 34, 0.05),
    0 24px 60px -12px rgba(20, 26, 34, 0.22);
  --shadow-popover: 0 0 0 1px rgba(20, 26, 34, 0.05),
    0 10px 30px -8px rgba(20, 26, 34, 0.16);

  --container: 1216px;
  --container-narrow: 736px;
  --container-wide: 1408px;
  --section-gap: 88px;

  --transition-fast: 160ms cubic-bezier(0.22, 1, 0.36, 1);
  --transition-base: 240ms cubic-bezier(0.22, 1, 0.36, 1);
  --transition-slow: 420ms cubic-bezier(0.22, 1, 0.36, 1);

  --z-sticky: 40;
  --z-header: 50;
  --z-dropdown: 60;
  --z-overlay: 80;
  --z-modal: 90;
}

/* Etkinlik aksanı: her etkinlik kendi rengini taşıyabilir ama sistem içinde
   kalır — yalnızca aksan üçlüsü geçersiz kılınır, tipografi/yerleşim değişmez. */
[data-event-accent] {
  --color-primary: var(--event-accent, #1d3f72);
  --color-primary-dark: color-mix(in srgb, var(--color-primary) 84%, #000);
  --color-primary-lighter: color-mix(in srgb, var(--color-primary) 8%, #fff);
  --color-primary-line: color-mix(in srgb, var(--color-primary) 24%, #fff);
  --color-primary-ink: color-mix(in srgb, var(--color-primary) 88%, #000);
  --color-focus: var(--color-primary);
}

/* ============================================================================
   4. RESET & GLOBAL
   ============================================================================ */

*,
*::before,
*::after {
  box-sizing: border-box;
}

* {
  margin: 0;
  padding: 0;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 16px);
}

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: var(--line-normal);
  letter-spacing: -0.002em;
  color: var(--color-text-primary);
  background: var(--color-bg-canvas);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-synthesis-weight: none;
}

img,
svg,
video {
  display: block;
  max-width: 100%;
  height: auto;
}

:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
  border-radius: var(--radius-xs);
}

::selection {
  background: var(--color-primary-lighter);
  color: var(--color-primary-ink);
}

/* ============================================================================
   5. TİPOGRAFİ
   ============================================================================ */

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-serif);
  font-weight: var(--weight-normal);
  line-height: var(--line-snug);
  color: var(--color-ink);
  margin-bottom: var(--space-4);
  text-wrap: balance;
}

h1 {
  font-size: var(--text-5xl);
  line-height: var(--line-tight);
  letter-spacing: var(--tracking-display);
}

h2 {
  font-size: var(--text-4xl);
  letter-spacing: var(--tracking-heading);
}

h3 {
  font-size: var(--text-3xl);
  letter-spacing: var(--tracking-heading);
}

h4 {
  font-size: var(--text-2xl);
  letter-spacing: var(--tracking-title);
}

/* h5/h6 gövde sans'a döner — serif yalnızca display içindir */
h5,
h6 {
  font-family: var(--font-sans);
  font-weight: var(--weight-medium);
  letter-spacing: var(--tracking-title);
}

h5 {
  font-size: var(--text-xl);
}

h6 {
  font-size: var(--text-lg);
}

p {
  margin-bottom: var(--space-4);
  line-height: var(--line-relaxed);
}

p:last-child {
  margin-bottom: 0;
}

strong,
b {
  font-weight: var(--weight-semibold);
}

small {
  font-size: var(--text-sm);
}

code,
pre,
kbd {
  font-family: var(--font-mono);
  font-size: 0.9em;
}

code {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xs);
  padding: 0.1em 0.4em;
}

/* Bağlantılar: dinlenirken altı çizili değil — çizgi yalnızca hover'da */
a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-primary-dark);
  text-decoration: underline;
  text-underline-offset: 0.2em;
}

hr {
  border: 0;
  border-top: 1px solid var(--color-border);
  margin: var(--space-8) 0;
}

ul,
ol {
  padding-left: 1.25em;
  margin-bottom: var(--space-4);
}

li {
  margin-bottom: var(--space-1);
}

/* Göz kırpma etiketi (eyebrow) — küçük, aralıklı, büyük harf */
.eyebrow {
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--color-text-tertiary);
}

/* ============================================================================
   6. LAYOUT
   ============================================================================ */

.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--space-6);
}

.container-narrow {
  max-width: var(--container-narrow);
}

.container-wide {
  max-width: var(--container-wide);
}

.section {
  padding-block: var(--section-gap);
}

.section-tight {
  padding-block: var(--space-12);
}

.section-fog {
  background: var(--color-bg-surface);
}

.section-mist {
  background: var(--color-bg-elevated);
}

main {
  min-height: 60vh;
}

/* Bölüm başlığı: sol tarafta göz kırpma etiketi + başlık, sağda ok bağlantısı */
.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--space-4);
  margin-bottom: var(--space-10);
}

.section-head h2 {
  margin-bottom: 0;
}

.section-head .eyebrow {
  display: block;
  margin-bottom: var(--space-2);
}

.section-head .section-desc {
  margin: var(--space-3) 0 0;
  max-width: 56ch;
  color: var(--color-text-secondary);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-6);
}

/* Editorial vurgu kartı + özellik kartları sütunu */
.platform-grid {
  display: grid;
  grid-template-columns: 1.25fr 1fr;
  gap: var(--space-6);
  align-items: stretch;
}

.platform-pitch {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: var(--space-10);
  padding: var(--space-12);
}

.platform-features {
  display: grid;
  gap: var(--space-6);
  align-content: start;
}

/* Tek Hesap → Tüm Etkinlikler → Tüm Başvurular → Tüm Belgeler */
.chain {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
}

.chain-step {
  display: inline-flex;
  align-items: center;
  padding: 5px 14px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.6);
}

.chain-arrow {
  opacity: 0.55;
}

/* Kapanış çağrısı — içindeki aurora'yı sınırlar içinde tutar */
.closing {
  position: relative;
  overflow: hidden;
  isolation: isolate;
}

/* Koyu mürekkep istatistik paneli */
.stat-panel {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-8);
  padding: var(--space-12);
}

.stat-box {
  transition: transform var(--transition-base);
}

.stat-box:hover {
  transform: translateY(-3px);
}

.stat-panel .stat-number {
  color: var(--color-paper);
  font-size: 44px;
  margin: 0;
  transition: color var(--transition-base);
}

.stat-box:hover .stat-number {
  color: var(--color-secondary);
}

.stat-label {
  margin: var(--space-2) 0 0;
  font-size: var(--text-sm);
  opacity: 0.65;
}

/* Hafif kaldırma — yalnızca gezinilebilir kartlarda */
.feature-card {
  transition: transform var(--transition-base),
    border-color var(--transition-base), box-shadow var(--transition-base);
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-primary-line);
  box-shadow: 0 12px 24px -10px rgba(29, 63, 114, 0.12);
}

.card-grid-tight {
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-10);
}

/* Etkinlik kartı görseli: doygun gradyan yerine sessiz ton yüzeyi */
.event-card {
  display: flex;
  flex-direction: column;
}

.event-card .card-footer {
  margin-top: auto;
}

.event-thumb {
  display: grid;
  place-items: center;
  height: 168px;
  margin-bottom: var(--space-5);
  border-radius: var(--radius-lg);
  background: var(--color-primary-lighter);
  font-size: 40px;
  line-height: 1;
}

.event-thumb-warm {
  background: var(--color-secondary);
}

/* ============================================================================
   7. HEADER & NAVIGATION
   ============================================================================ */

header {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: background-color var(--transition-base),
    border-color var(--transition-base), transform var(--transition-base);
}

header.scrolled {
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom-color: var(--color-border);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  height: var(--header-bar-h);
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--space-6);
}

/* app.js aşağı kaydırırken header'ı gizler, yukarı kaydırınca geri getirir */
header.header-hidden {
  transform: translateY(-100%);
}

.logo {
  font-family: var(--font-serif);
  font-size: var(--text-xl);
  font-weight: var(--weight-normal);
  letter-spacing: var(--tracking-title);
  color: var(--color-ink);
  white-space: nowrap;
}

.logo:hover {
  color: var(--color-ink);
  text-decoration: none;
}

/* Fısıltı sessizliğinde navigasyon — zemin yok, gölge yok, ayraç yok */
.nav {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav li {
  margin: 0;
}

/* Header'daki oturum düğmeleri */
.auth-links {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.nav a {
  font-size: var(--text-base);
  font-weight: var(--weight-normal);
  color: var(--color-ink);
  padding: 2px 0;
  position: relative;
}

.nav a:hover {
  text-decoration: none;
  color: var(--color-primary);
}

.nav a.active {
  color: var(--color-ink);
}

.nav a.active::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -4px;
  height: 1px;
  background: var(--color-ink);
}

/* ============================================================================
   8. HERO
   ============================================================================ */

.hero {
  position: relative;
  overflow: hidden;
  background: var(--color-bg-canvas);
  padding-block: clamp(56px, 9vw, 104px);
  isolation: isolate;
}

/* Metin + çevresinde yüzen platform parçacıkları kolajı */
.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  align-items: center;
  gap: var(--space-16);
}

.hero-copy {
  max-width: 38rem;
}

.hero h1 {
  font-size: clamp(38px, 5.2vw, 68px);
  line-height: var(--line-tight);
  letter-spacing: var(--tracking-display);
  margin: var(--space-5) 0 0;
}

/* Cümle ortasında italik vurgu — referansın imza hamlesi */
.hero-word {
  font-style: italic;
  color: var(--color-primary);
}

.hero-lead {
  margin-top: var(--space-6);
  max-width: 52ch;
  font-size: var(--text-lg);
  line-height: var(--line-relaxed);
  color: var(--color-text-secondary);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3);
  margin-top: var(--space-8);
}

.hero-note {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-top: var(--space-8);
  margin-bottom: 0;
  font-size: var(--text-sm);
  color: var(--color-text-tertiary);
}

.hero-note-mark {
  color: var(--color-success);
  font-weight: var(--weight-semibold);
}

/* Hero'ya kademeli giriş */
@keyframes fade-up {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-enter {
  animation: fade-up 0.7s var(--transition-base) backwards;
}

.hero-enter-1 { animation-delay: 0.05s; }
.hero-enter-2 { animation-delay: 0.18s; }
.hero-enter-3 { animation-delay: 0.32s; }
.hero-enter-4 { animation-delay: 0.46s; }
.hero-enter-5 { animation-delay: 0.60s; }

/* ── Aurora: yumuşak ışık yıkaması ────────────────────────────────────
   blur() filtresi yerine doğrudan radial-gradient kullanılır; aynı
   yumuşaklık, kompozisyon maliyeti çok daha düşük. */
.aurora {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  z-index: 0;
  -webkit-mask-image: radial-gradient(120% 100% at 50% 0%, #000 55%, transparent 100%);
  mask-image: radial-gradient(120% 100% at 50% 0%, #000 55%, transparent 100%);
}

.aurora-blob {
  position: absolute;
  display: block;
  border-radius: 50%;
  will-change: transform;
  transform: translate3d(0, 0, 0);
}

.aurora-blob-a {
  width: 46rem;
  height: 46rem;
  top: -16rem;
  left: -10rem;
  background: radial-gradient(
    circle at 35% 35%,
    rgba(29, 63, 114, 0.16) 0%,
    rgba(29, 63, 114, 0) 62%
  );
}

.aurora-blob-b {
  width: 42rem;
  height: 42rem;
  top: -6rem;
  right: -8rem;
  background: radial-gradient(
    circle at 60% 40%,
    rgba(107, 68, 35, 0.13) 0%,
    rgba(107, 68, 35, 0) 62%
  );
}

.aurora-blob-c {
  width: 36rem;
  height: 36rem;
  bottom: -12rem;
  left: 35%;
  background: radial-gradient(
    circle at 50% 50%,
    rgba(243, 231, 214, 0.55) 0%,
    rgba(243, 231, 214, 0) 66%
  );
}

.aurora-blob-d {
  width: 30rem;
  height: 30rem;
  top: 12%;
  right: 14%;
  background: radial-gradient(
    circle at 50% 50%,
    rgba(243, 231, 214, 0.5) 0%,
    rgba(243, 231, 214, 0) 62%
  );
}

/* Nokta ızgara dokusu — çok hafif, yalnızca hero merkezinde görünür */
.aurora-grid {
  position: absolute;
  inset: 0;
  display: block;
  background-image: radial-gradient(
    circle at 1px 1px,
    rgba(20, 26, 34, 0.05) 1px,
    transparent 0
  );
  background-size: 32px 32px;
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 35%, #000 30%, transparent 80%);
  mask-image: radial-gradient(ellipse 80% 60% at 50% 35%, #000 30%, transparent 80%);
  opacity: 0.7;
}

.aurora-soft {
  -webkit-mask-image: radial-gradient(100% 100% at 50% 50%, #000 40%, transparent 100%);
  mask-image: radial-gradient(100% 100% at 50% 50%, #000 40%, transparent 100%);
}

/* Sayfa geneline yayılan çok hafif doku */
.mesh {
  position: relative;
  isolation: isolate;
}

.mesh::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background: radial-gradient(
      60rem 40rem at 12% -10%,
      rgba(29, 63, 114, 0.05) 0%,
      transparent 62%
    ),
    radial-gradient(
      48rem 34rem at 88% 6%,
      rgba(107, 68, 35, 0.04) 0%,
      transparent 60%
    );
}

/* ── Yüzen platform parçacıkları ─────────────────────────────────────
   Gölgeyi sistemde yalnızca bunlar hak eder. */
.hero-floats {
  position: relative;
  min-height: 26rem;
}

.float {
  position: absolute;
  background: rgba(255, 255, 255, 0.94);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-float);
  padding: var(--space-4) var(--space-5);
  transition: box-shadow var(--transition-base),
    border-color var(--transition-base);
  will-change: transform;
}

@keyframes float-a {
  0%, 100% { transform: translate3d(0, 0, 0) rotate(0deg); }
  50% { transform: translate3d(0, -10px, 0) rotate(0.8deg); }
}

@keyframes float-b {
  0%, 100% { transform: translate3d(0, 0, 0) rotate(0deg); }
  50% { transform: translate3d(0, 10px, 0) rotate(-0.7deg); }
}

@keyframes float-c {
  0%, 100% { transform: translate3d(0, 0, 0) rotate(0deg); }
  50% { transform: translate3d(0, -8px, 0) rotate(0.6deg); }
}

.float-1 {
  top: 0;
  right: 1rem;
  width: 19.5rem;
  animation: float-a 7.5s ease-in-out infinite;
}

.float-2 {
  top: 11.5rem;
  left: 0;
  width: 18rem;
  animation: float-b 9s ease-in-out infinite 0.6s;
}

.float-3 {
  bottom: 0.5rem;
  right: 3rem;
  width: 16rem;
  animation: float-c 8s ease-in-out infinite 1.4s;
}

.float-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-3);
}

.float-title {
  margin: var(--space-3) 0 0;
  font-family: var(--font-serif);
  font-size: var(--text-lg);
  line-height: var(--line-snug);
}

.float-line {
  margin: var(--space-2) 0 0;
  font-size: var(--text-sm);
  line-height: var(--line-snug);
}

.float-meta {
  display: flex;
  gap: var(--space-4);
  margin-top: var(--space-3);
  font-size: var(--text-xs);
  color: var(--color-text-secondary);
}

.float-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: var(--space-4);
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-border);
  font-size: var(--text-xs);
}

.float-deadline {
  font-weight: var(--weight-medium);
  color: var(--color-warning);
}

.float-ref {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-secondary);
}

/* Süreç ilerlemesi — eksensiz, jest niteliğinde */
.float-progress {
  display: flex;
  align-items: center;
  gap: 6px;
  margin: var(--space-4) 0 var(--space-3);
}

.float-progress span {
  flex: 1;
  height: 6px;
  border-radius: var(--radius-pill);
  background: var(--color-success);
}

.float-icon {
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  flex: none;
  border-radius: var(--radius-sm);
  background: var(--color-secondary);
  font-size: 15px;
}

.float-strong {
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
}

/* Rozet içi nabız noktası */
.badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
  flex: none;
}

/* ============================================================================
   9. BUTONLAR
   ============================================================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  font-family: var(--font-sans);
  font-size: var(--text-base);
  font-weight: var(--weight-medium);
  line-height: 1;
  padding: 13px 22px;
  white-space: nowrap;
  text-align: center;
  cursor: pointer;
  text-decoration: none;
  background: transparent;
  color: var(--color-ink);
  transition: background-color var(--transition-fast),
    border-color var(--transition-fast), color var(--transition-fast),
    transform var(--transition-fast);
}

.btn:hover {
  text-decoration: none;
}

.btn:active {
  transform: translateY(1px);
}

.btn:disabled,
.btn[aria-disabled="true"] {
  opacity: 0.45;
  cursor: not-allowed;
  transform: none;
}

/* Birincil: dolu siyah lozenj — sistemin imza eylemi */
.btn-primary {
  background: var(--color-ink);
  color: var(--color-paper);
}

.btn-primary:hover:not(:disabled) {
  background: var(--color-primary-ink);
  color: var(--color-paper);
}

/* İkincil: kurumsal lacivert dolgu */
.btn-secondary {
  background: var(--color-primary);
  color: var(--color-paper);
}

.btn-secondary:hover:not(:disabled) {
  background: var(--color-primary-dark);
  color: var(--color-paper);
}

/* Hayalet: dolu pill ile eşleşen ikinci eylem */
.btn-outline {
  background: transparent;
  color: var(--color-ink);
  border-color: var(--color-ink);
}

.btn-outline:hover:not(:disabled) {
  background: var(--color-ink);
  color: var(--color-paper);
}

.btn-success {
  background: var(--color-success);
  color: var(--color-paper);
}

.btn-success:hover:not(:disabled) {
  background: #175a3f;
  color: var(--color-paper);
}

.btn-danger {
  background: var(--color-error);
  color: var(--color-paper);
}

.btn-danger:hover:not(:disabled) {
  background: #822525;
  color: var(--color-paper);
}

.btn-outline-danger {
  background: transparent;
  color: var(--color-error);
  border-color: var(--color-error-line);
}

.btn-outline-danger:hover:not(:disabled) {
  background: var(--color-error);
  border-color: var(--color-error);
  color: var(--color-paper);
}

.btn-sm {
  font-size: var(--text-sm);
  padding: 8px 16px;
}

.btn-lg {
  font-size: var(--text-lg);
  padding: 15px 28px;
}

.btn-block {
  display: flex;
  width: 100%;
}

/* Koyu mürekkep yüzey üzerindeki düğmeler */
.btn-on-ink {
  background: var(--color-paper);
  color: var(--color-ink);
}

.btn-on-ink:hover:not(:disabled) {
  background: rgba(255, 255, 255, 0.88);
  color: var(--color-ink);
}

.btn-outline-on-ink {
  background: transparent;
  color: var(--color-paper);
  border-color: rgba(255, 255, 255, 0.35);
}

.btn-outline-on-ink:hover:not(:disabled) {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.6);
  color: var(--color-paper);
}

/* En düşük vurgulu eylem — ok eki bağlantı görevini taşır */
.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: var(--text-base);
  color: var(--color-ink);
}

.link-arrow::after {
  content: "→";
  transition: transform var(--transition-fast);
}

.link-arrow:hover::after {
  transform: translateX(3px);
}

/* ============================================================================
   10. KARTLAR
   ============================================================================ */

.card {
  background: var(--color-bg-elevated);
  border: 1px solid transparent;
  border-radius: var(--radius-2xl);
  padding: var(--space-6);
}

/* Kenarlıklı varyant — beyaz zeminde kıl payı çizgi */
.card-outline {
  background: var(--color-paper);
  border-color: var(--color-border);
}

/* Editorial vurgu — sayfada en fazla bir kez */
.card-accent {
  background: var(--color-secondary);
  color: var(--color-secondary-ink);
  border-color: var(--color-secondary-line);
}

.card-accent h1,
.card-accent h2,
.card-accent h3,
.card-accent h4 {
  color: var(--color-secondary-ink);
}

.card-ink {
  background: var(--color-bg-ink);
  color: rgba(255, 255, 255, 0.88);
  border-color: transparent;
}

.card-ink h1,
.card-ink h2,
.card-ink h3,
.card-ink h4 {
  color: var(--color-paper);
}

/* Yüzen öğe — gölgeyi yalnızca bu hak eder */
.card-float {
  background: var(--color-paper);
  border-radius: var(--radius-xl);
  border-color: transparent;
  box-shadow: var(--shadow-float);
}

.card-header {
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--color-border);
}

.card-header :last-child {
  margin-bottom: 0;
}

.card-body {
  margin-bottom: var(--space-4);
}

.card-footer {
  margin-top: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border);
}

/* ============================================================================
   11. FORM ÖĞELERİ
   ============================================================================ */

.form-group {
  margin-bottom: var(--space-5);
}

.form-group label,
.form-label {
  display: block;
  margin-bottom: var(--space-2);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-ink-soft);
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="tel"],
input[type="url"],
input[type="date"],
input[type="time"],
input[type="datetime-local"],
input[type="search"],
select,
textarea {
  width: 100%;
  background: var(--color-paper);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 13px 16px;
  font-family: var(--font-sans);
  font-size: var(--text-base);
  color: var(--color-ink);
  transition: border-color var(--transition-fast),
    box-shadow var(--transition-fast), background-color var(--transition-fast);
}

input:hover:not(:disabled),
select:hover:not(:disabled),
textarea:hover:not(:disabled) {
  border-color: var(--color-border-strong);
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: var(--focus-ring);
}

input:disabled,
select:disabled,
textarea:disabled {
  background: var(--color-bg-elevated);
  color: var(--color-text-tertiary);
  cursor: not-allowed;
}

input::placeholder,
textarea::placeholder {
  color: var(--color-text-muted);
}

textarea {
  min-height: 120px;
  resize: vertical;
  line-height: var(--line-normal);
}

select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='none' stroke='%238b94a3' stroke-width='1.5' d='M1 1.5 6 6.5l5-5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 40px;
}

input[type="checkbox"],
input[type="radio"] {
  width: 18px;
  height: 18px;
  accent-color: var(--color-primary);
  cursor: pointer;
}

input[type="file"] {
  padding: 10px 16px;
  background: var(--color-bg-surface);
  cursor: pointer;
}

.form-help {
  display: block;
  margin-top: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--line-normal);
}

.field-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-4);
}

/* ============================================================================
   12. ROZETLER
   ============================================================================ */

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  padding: 5px 12px;
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  line-height: 1.2;
  white-space: nowrap;
  background: var(--color-bg-elevated);
  color: var(--color-ink-soft);
  border-color: var(--color-border);
}

.badge-success {
  background: var(--color-success-soft);
  color: var(--color-success);
  border-color: var(--color-success-line);
}

.badge-warning {
  background: var(--color-warning-soft);
  color: var(--color-warning);
  border-color: var(--color-warning-line);
}

.badge-danger {
  background: var(--color-error-soft);
  color: var(--color-error);
  border-color: var(--color-error-line);
}

.badge-info {
  background: var(--color-info-soft);
  color: var(--color-info);
  border-color: var(--color-info-line);
}

.badge-accent {
  background: var(--color-primary-lighter);
  color: var(--color-primary-ink);
  border-color: var(--color-primary-line);
}

.badge-muted {
  background: transparent;
  color: var(--color-text-tertiary);
  border-color: var(--color-border);
}

/* ============================================================================
   13. UYARI KUTULARI
   ============================================================================ */

.alert {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  border: 1px solid;
  border-radius: var(--radius-lg);
  font-size: var(--text-base);
  line-height: var(--line-normal);
  margin-bottom: var(--space-4);
  background: var(--color-bg-elevated);
  border-color: var(--color-border);
  color: var(--color-ink-soft);
}

.alert-success {
  background: var(--color-success-soft);
  border-color: var(--color-success-line);
  color: var(--color-success);
}

.alert-warning {
  background: var(--color-warning-soft);
  border-color: var(--color-warning-line);
  color: var(--color-warning);
}

.alert-error,
.alert-danger {
  background: var(--color-error-soft);
  border-color: var(--color-error-line);
  color: var(--color-error);
}

.alert-info {
  background: var(--color-info-soft);
  border-color: var(--color-info-line);
  color: var(--color-info);
}

.alert-close {
  margin-left: auto;
  background: none;
  border: 0;
  font-size: var(--text-lg);
  line-height: 1;
  color: currentColor;
  opacity: 0.5;
  cursor: pointer;
  padding: 0 4px;
  transition: opacity var(--transition-fast);
}

.alert-close:hover {
  opacity: 1;
}

/* ============================================================================
   14. TABLOLAR
   ============================================================================ */

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--text-base);
}

.data-table thead th {
  text-align: left;
  padding: 14px 16px;
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--color-text-tertiary);
  background: var(--color-bg-surface);
  border-bottom: 1px solid var(--color-border);
  white-space: nowrap;
}

.data-table tbody td {
  padding: 15px 16px;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-ink-soft);
  vertical-align: middle;
}

.data-table tbody tr:last-child td {
  border-bottom: 0;
}

.data-table tbody tr {
  transition: background-color var(--transition-fast);
}

.data-table tbody tr:hover {
  background: var(--color-bg-surface);
}

.table-wrap {
  overflow-x: auto;
  background: var(--color-paper);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
}

/* Kart içinde tablo: kartın kendi dolgusu iptal, köşeler kartla uyumlu */
.card > .data-table:only-child {
  margin: calc(var(--space-6) * -1);
  width: calc(100% + var(--space-6) * 2);
}

/* ============================================================================
   15. BOŞ DURUM
   ============================================================================ */

.empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--space-3);
  padding: var(--space-16) var(--space-6);
  background: var(--color-bg-surface);
  border: 1px dashed var(--color-border-strong);
  border-radius: var(--radius-2xl);
}

.empty-icon {
  display: grid;
  place-items: center;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--color-paper);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  margin-bottom: var(--space-2);
  font-size: 24px;
}

/* ============================================================================
   16. GİRİŞ / KAYIT EKRANI (auth_layout)
   ============================================================================ */

.auth-shell {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 100vh;
}

.auth-brand {
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: var(--space-12);
  background: var(--color-bg-ink);
  color: rgba(255, 255, 255, 0.9);
  isolation: isolate;
}

.auth-brand-blob {
  position: absolute;
  z-index: -1;
  border-radius: 50%;
  pointer-events: none;
  opacity: 0.55;
}

.auth-brand-blob:nth-of-type(1) {
  width: 420px;
  height: 420px;
  top: -80px;
  right: -120px;
  background: radial-gradient(circle, #1d3f72 0%, rgba(29, 63, 114, 0) 70%);
}

.auth-brand-blob:nth-of-type(2) {
  width: 360px;
  height: 360px;
  bottom: -100px;
  left: -80px;
  background: radial-gradient(circle, #6b4423 0%, rgba(107, 68, 35, 0) 70%);
}

.auth-brand-logo {
  font-family: var(--font-serif);
  font-size: var(--text-xl);
  color: var(--color-paper);
}

.auth-brand-logo:hover {
  color: var(--color-paper);
  text-decoration: none;
}

.auth-brand-body {
  position: relative;
  max-width: 460px;
}

.auth-brand-body h1,
.auth-brand-body h2 {
  color: var(--color-paper);
  font-size: var(--text-4xl);
  letter-spacing: var(--tracking-heading);
  margin-bottom: var(--space-4);
}

.auth-brand-body p {
  color: rgba(255, 255, 255, 0.72);
  font-size: var(--text-lg);
  line-height: var(--line-relaxed);
  max-width: 42ch;
  margin-bottom: 0;
}

.auth-brand-foot {
  position: relative;
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.55);
}

.auth-form-side {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: var(--space-12) var(--space-8);
  background: var(--color-bg-canvas);
}

.auth-form-side > * {
  width: 100%;
  max-width: 440px;
  margin-inline: auto;
}

.auth-form-mobile-logo {
  display: none;
  text-align: center;
  margin-bottom: var(--space-8);
  font-family: var(--font-serif);
  font-size: var(--text-xl);
  color: var(--color-ink);
}

/* Giriş ekranında kart beyaz ve kenarlıklı durur */
.auth-form-side .card {
  background: var(--color-paper);
  border-color: var(--color-border);
}

/* ============================================================================
   17. YÖNETİM PANELİ (backend_layout)
   ============================================================================ */

.admin-shell {
  display: grid;
  grid-template-columns: 264px 1fr;
  min-height: 100vh;
  background: var(--color-bg-canvas);
}

.admin-sidebar {
  position: sticky;
  top: 0;
  align-self: start;
  height: 100vh;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-6) var(--space-4);
  background: var(--color-bg-surface);
  border-right: 1px solid var(--color-border);
}

.admin-sidebar-brand {
  display: block;
  font-family: var(--font-serif);
  font-size: var(--text-lg);
  color: var(--color-ink);
  padding: 0 var(--space-3) var(--space-4);
}

.admin-sidebar-brand:hover {
  color: var(--color-ink);
  text-decoration: none;
}

.admin-sidebar-panel-title {
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--color-text-tertiary);
  padding: var(--space-4) var(--space-3) var(--space-2);
}

.admin-nav-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: 10px var(--space-3);
  border-radius: var(--radius-sm);
  font-size: var(--text-base);
  font-weight: var(--weight-normal);
  color: var(--color-text-secondary);
  transition: background-color var(--transition-fast),
    color var(--transition-fast);
}

.admin-nav-item:hover {
  background: var(--color-bg-elevated);
  color: var(--color-ink);
  text-decoration: none;
}

.admin-nav-item.active {
  background: var(--color-primary-lighter);
  color: var(--color-primary-ink);
  font-weight: var(--weight-medium);
}

.admin-sidebar-footer {
  margin-top: auto;
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

/* <details> ile menü: masaüstünde özet satırı dekoratif bölüm başlığıdır,
   dar ekranda gerçek bir açılır/kapanır düğmeye dönüşür. */
.admin-sidebar-toggle > summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  padding: var(--space-4) var(--space-3) var(--space-2);
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--color-text-tertiary);
  cursor: default;
  list-style: none;
}

.admin-sidebar-toggle > summary::-webkit-details-marker,
.admin-sidebar-toggle > summary::marker {
  display: none;
  content: "";
}

.chevron {
  display: none;
  transition: transform var(--transition-fast);
}

.admin-sidebar-toggle[open] .chevron {
  transform: rotate(180deg);
}

.admin-main {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.admin-topbar {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  height: 64px;
  padding-inline: var(--space-8);
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--color-border);
}

.admin-content {
  flex: 1;
  padding: var(--space-8);
  max-width: var(--container-wide);
  width: 100%;
}

.admin-content h1 {
  font-size: var(--text-3xl);
  letter-spacing: var(--tracking-heading);
}

/* Panelde kartlar beyaz ve kenarlıklı — gri üstüne gri olmasın */
.admin-content .card {
  background: var(--color-paper);
  border-color: var(--color-border);
}

.dashboard-columns {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--space-8);
}

/* ============================================================================
   17b. KULLANICI PANOSU (dashboard_shell)
   Genel layout'un içinde durur: üst menü kalır, içerik iki sütuna bölünür.
   ============================================================================ */

.panel-grid {
  display: grid;
  grid-template-columns: 16rem 1fr;
  gap: var(--space-10);
  align-items: start;
}

.panel-side {
  position: sticky;
  top: calc(var(--header-height) + var(--space-6));
}

.panel-main {
  min-width: 0;
}

/* Panoda sayfa başlığı hero ölçeğinde olmasın */
.panel-main > h1,
.panel-main section > h1 {
  font-size: var(--text-3xl);
  letter-spacing: var(--tracking-heading);
}

/* Pano içinde bölümler kendi dolgusunu getirmesin */
.panel-main > section {
  padding: 0 !important;
}

.panel-user {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: 0 var(--space-3);
  margin-bottom: var(--space-6);
}

.panel-avatar {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  flex: none;
  border-radius: 50%;
  background: var(--color-primary-lighter);
  color: var(--color-primary-ink);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
}

.panel-user-text {
  min-width: 0;
}

.panel-user-name {
  display: block;
  font-size: var(--text-base);
  font-weight: var(--weight-medium);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.panel-user-meta {
  display: block;
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sidenav {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.sidenav-group {
  margin: var(--space-4) 0 var(--space-1);
  padding: 0 var(--space-3);
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--color-text-tertiary);
}

.sidenav-link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  min-height: 44px;
  padding: 10px var(--space-3);
  border-radius: var(--radius-sm);
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.sidenav-link:hover {
  background: var(--color-bg-elevated);
  color: var(--color-ink);
  text-decoration: none;
}

.sidenav-link[aria-current="page"] {
  background: var(--color-primary-lighter);
  color: var(--color-primary-ink);
  font-weight: var(--weight-medium);
}

.sidenav-icon {
  flex: none;
  width: 18px;
  text-align: center;
  color: var(--color-text-muted);
}

.sidenav-link[aria-current="page"] .sidenav-icon {
  color: var(--color-primary);
}

.sidenav-count {
  margin-left: auto;
  font-size: var(--text-xs);
  font-variant-numeric: tabular-nums;
  color: var(--color-text-tertiary);
}

/* ============================================================================
   18. MOBİL MENÜ (dokunma hedefleri >= 44x44px)
   ============================================================================ */

.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  width: 44px;
  height: 44px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: var(--color-paper);
  color: var(--color-ink);
  cursor: pointer;
}

.mobile-menu-toggle span {
  display: block;
  width: 16px;
  height: 1.5px;
  background: var(--color-ink);
  border-radius: 2px;
}

.mobile-menu-panel {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  display: flex;
  flex-direction: column;
  background: var(--color-bg-canvas);
  padding: var(--space-6);
  transform: translateY(-8px);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base), transform var(--transition-base),
    visibility var(--transition-base);
}

.mobile-menu-panel.active {
  transform: translateY(0);
  opacity: 1;
  visibility: visible;
}

.mobile-menu-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-8);
}

.mobile-menu-close {
  width: 44px;
  height: 44px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: var(--color-paper);
  font-size: var(--text-xl);
  line-height: 1;
  color: var(--color-ink);
  cursor: pointer;
}

.mobile-menu-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  list-style: none;
  margin: 0;
  padding: 0;
}

.mobile-menu-links li {
  margin: 0;
}

.mobile-menu-links a {
  display: flex;
  align-items: center;
  min-height: 44px;
  padding: var(--space-3) 0;
  font-family: var(--font-serif);
  font-size: var(--text-2xl);
  color: var(--color-ink);
  border-bottom: 1px solid var(--color-border-light);
}

.mobile-menu-links a:hover {
  text-decoration: none;
  color: var(--color-primary);
}

.mobile-menu-auth {
  margin-top: auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding-top: var(--space-6);
}

/* ============================================================================
   19. ANLATIM BÖLÜMÜ (Keşfet → Başvur → Takip Et → Belgeni Al)
   ============================================================================ */

.story-section {
  padding-block: var(--section-gap);
  background: var(--color-bg-surface);
}

.story-columns {
  display: grid;
  grid-template-columns: 1.25fr 1fr;
  gap: var(--space-16);
  align-items: start;
}

.story-sticky {
  position: sticky;
  top: calc(var(--header-height) + var(--space-8));
}

.story-step {
  display: flex;
  gap: var(--space-5);
  padding-block: var(--space-6);
  border-bottom: 1px solid var(--color-border);
  opacity: 0.55;
  transition: opacity var(--transition-base);
}

.story-step.active {
  opacity: 1;
}

.story-step h3 {
  font-size: var(--text-2xl);
  margin-bottom: var(--space-2);
}

.story-step p {
  margin-bottom: 0;
}

.story-step:last-child {
  border-bottom: 0;
}

.story-step-number {
  flex: none;
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--color-paper);
  border: 1px solid var(--color-border);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-text-secondary);
  font-variant-numeric: tabular-nums;
}

/* ============================================================================
   20. ADIM GÖSTERGESİ (başvuru formu)
   ============================================================================ */

.stepper-circle {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--color-paper);
  border: 1px solid var(--color-border);
  font-size: var(--text-sm);
  color: var(--color-text-tertiary);
  font-variant-numeric: tabular-nums;
  transition: background-color var(--transition-fast),
    border-color var(--transition-fast), color var(--transition-fast);
}

.stepper-circle.active {
  background: var(--color-ink);
  border-color: var(--color-ink);
  color: var(--color-paper);
}

.stepper-label {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

.stepper-mobile-track {
  height: 4px;
  background: var(--color-border);
  border-radius: var(--radius-pill);
  overflow: hidden;
}

.stepper-mobile-fill {
  height: 100%;
  background: var(--color-ink);
  border-radius: var(--radius-pill);
  transition: width var(--transition-base);
}

.stepper-mobile-label {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  margin-top: var(--space-2);
}

.form-step {
  display: none;
}

.form-step.active {
  display: block;
}

/* ============================================================================
   21. ETKİNLİK MİNİ-SİTESİ
   ============================================================================ */

.event-hero {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  padding-block: clamp(48px, 8vw, 96px);
  background: var(--color-bg-canvas);
}

/* Etkinlik renginden türetilen yumuşak ışık yıkaması */
.event-hero::before {
  content: "";
  position: absolute;
  z-index: -1;
  top: -40%;
  left: 50%;
  transform: translateX(-50%);
  width: 70vw;
  height: 70vw;
  max-width: 900px;
  max-height: 900px;
  border-radius: 50%;
  opacity: 0.55;
  background: radial-gradient(
    circle,
    var(--color-primary-lighter) 0%,
    transparent 70%
  );
  pointer-events: none;
}

.event-hero-cover {
  position: absolute;
  inset: 0;
  z-index: -1;
  background-size: cover;
  background-position: center;
  opacity: 0.1;
}

.event-hero h1 {
  margin-bottom: var(--space-5);
}

.event-hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-6);
  font-size: var(--text-base);
  color: var(--color-text-secondary);
}

/* ============================================================================
   21b. ETKİNLİK MİNİ-SİTE SEKMELERİ
   ============================================================================ */

.event-tab {
  padding: 10px var(--space-4);
  border: 0;
  border-radius: var(--radius-pill);
  background: transparent;
  font-family: var(--font-sans);
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  cursor: pointer;
  white-space: nowrap;
  transition: background-color var(--transition-fast),
    color var(--transition-fast);
}

.event-tab:hover {
  background: var(--color-bg-elevated);
  color: var(--color-ink);
}

.event-tab.active {
  background: var(--color-ink);
  color: var(--color-paper);
}

.event-tab-panel {
  display: none;
}

.event-tab-panel.active {
  display: block;
}

/* ============================================================================
   22. SERTİFİKA / DOĞRULAMA
   ============================================================================ */

.certificate {
  background: var(--color-paper);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-2xl);
  padding: var(--space-16) var(--space-12);
  text-align: center;
}

.verification {
  text-align: center;
}

.verification-qr {
  margin-inline: auto;
  border-radius: var(--radius-md);
}

.verification-text {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.08em;
  color: var(--color-text-secondary);
}

.print-actions {
  display: flex;
  gap: var(--space-3);
  justify-content: center;
  margin-top: var(--space-8);
}

/* ============================================================================
   23. YARDIMCI SINIFLAR
   ============================================================================ */

/* Yalnızca ekran okuyucular için */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.text-secondary {
  color: var(--color-text-secondary);
}

.text-tertiary {
  color: var(--color-text-tertiary);
}

.text-center {
  text-align: center;
}

.text-sm {
  font-size: var(--text-sm);
}

.tabular {
  font-variant-numeric: tabular-nums;
}

.hairline {
  border-top: 1px solid var(--color-border);
}

.box {
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
}

.meta {
  font-size: var(--text-sm);
  color: var(--color-text-tertiary);
}

.icon {
  flex: none;
}

.perm-toggle {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
}

.remove-author {
  background: none;
  border: 0;
  color: var(--color-error);
  cursor: pointer;
  font-size: var(--text-sm);
}

.stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.stat-number {
  font-family: var(--font-serif);
  font-size: var(--text-3xl);
  line-height: 1;
  color: var(--color-ink);
  font-variant-numeric: tabular-nums;
}

/* ============================================================================
   24. GERİ DÖN & İLERLEME ÇUBUĞU
   ============================================================================ */

.back-to-top {
  position: fixed;
  right: var(--space-6);
  bottom: var(--space-6);
  z-index: var(--z-sticky);
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border: 1px solid var(--color-border);
  border-radius: 50%;
  background: var(--color-paper);
  color: var(--color-ink);
  box-shadow: var(--shadow-popover);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity var(--transition-base), transform var(--transition-base),
    visibility var(--transition-base);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.scroll-progress-track {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  z-index: calc(var(--z-header) + 1);
  background: transparent;
  pointer-events: none;
}

.scroll-progress-bar {
  height: 100%;
  width: 0;
  background: var(--color-ink);
  transition: width 80ms linear;
}

/* ============================================================================
   26. YAZDIRMA
   ============================================================================ */

@media print {
  header,
  .admin-sidebar,
  .admin-topbar,
  .back-to-top,
  .scroll-progress-track,
  .print-actions,
  .mobile-menu-toggle {
    display: none !important;
  }

  body {
    background: #fff;
  }

  .card,
  .certificate {
    border: 1px solid #ddd;
    box-shadow: none;
  }
}

/* ============================================================================
   27. DUYARLI TASARIM
   ============================================================================ */

@media (max-width: 1024px) {
  /* Yüzen kolaj yalnızca geniş ekranda anlamlı; dar ekranda metne yer aç */
  .hero-grid {
    grid-template-columns: 1fr;
    gap: var(--space-10);
  }

  .hero-floats {
    display: none;
  }

  .platform-grid {
    grid-template-columns: 1fr;
  }

  .platform-pitch {
    padding: var(--space-8);
  }

  .hide-md {
    display: none;
  }

  .admin-shell {
    grid-template-columns: 1fr;
  }

  .admin-sidebar {
    position: static;
    height: auto;
    border-right: 0;
    border-bottom: 1px solid var(--color-border);
  }

  /* Dar ekranda özet satırı gerçek bir düğmeye dönüşür */
  .admin-sidebar-toggle > summary {
    min-height: 44px;
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-sm);
    background: var(--color-bg-elevated);
    color: var(--color-ink);
    text-transform: none;
    letter-spacing: normal;
    font-size: var(--text-sm);
    cursor: pointer;
  }

  .chevron {
    display: inline-block;
  }

  .admin-content,
  .admin-topbar {
    padding-inline: var(--space-6);
  }
}

@media (max-width: 900px) {
  .dashboard-columns {
    grid-template-columns: 1fr;
  }

  .story-columns {
    grid-template-columns: 1fr;
    gap: var(--space-10);
  }

  /* Panoda yan gezinti üstte yatay bir şeride dönüşür */
  .panel-grid {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }

  .panel-side {
    position: static;
  }

  .sidenav {
    flex-direction: row;
    flex-wrap: wrap;
  }

  .sidenav-group {
    display: none;
  }

  .sidenav-link {
    border: 1px solid var(--color-border);
  }

  .story-sticky {
    position: static;
    order: -1;
  }

  .auth-shell {
    grid-template-columns: 1fr;
  }

  .auth-brand {
    display: none;
  }

  .auth-form-mobile-logo {
    display: block;
  }
}

@media (max-width: 768px) {
  :root {
    --section-gap: 56px;
  }

  .hide-sm {
    display: none;
  }

  .stat-panel {
    grid-template-columns: repeat(2, 1fr);
    padding: var(--space-8);
    gap: var(--space-6);
  }

  /* Dar ekranda gezinme ve oturum düğmeleri mobil menü paneline taşınır */
  .nav,
  .auth-links {
    display: none;
  }

  .mobile-menu-toggle {
    display: inline-flex;
  }

  h1 {
    font-size: var(--text-4xl);
  }

  h2 {
    font-size: var(--text-3xl);
  }

  h3 {
    font-size: var(--text-2xl);
  }

  .card {
    padding: var(--space-5);
  }

  .admin-content {
    padding: var(--space-5) var(--space-4);
  }

  .container {
    padding-inline: var(--space-4);
  }
}

@media (max-width: 480px) {
  .btn {
    padding: 12px 18px;
  }

  .certificate {
    padding: var(--space-8) var(--space-5);
  }

  .story-step {
    flex-direction: column;
    gap: var(--space-3);
  }
}

/* ============================================================================
   28. HAREKET AZALTMA TERCİHİ
   ============================================================================ */

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .hero::before,
  .hero::after {
    animation: none;
  }
}