/* ==========================================================================
   İÜC LİDERLER ZİRVESİ — TEK DOSYA SİTE STİLİ (site.css)
   ==========================================================================
   Bu dosya TÜM sitenin CSS'ini içerir. Astro sürümünde her bileşenin kendi
   <style> bloğu vardı; düz HTML sürümünde hepsi buraya, tek dosyada
   birleştirildi — böylece "hangi dosyada arayacağım" derdi olmadan
   Ctrl+F ile istediğiniz sınıfı (class) bulup düzenleyebilirsiniz.

   İçindekiler (Ctrl+F ile başlığa atlayın):
   1. YAZI TİPLERİ (@font-face)
   2. TASARIM TOKENLARI (renkler, boşluklar, tipografi ölçekleri)
   3. TEMEL SIFIRLAMA (reset) VE GÖVDE STİLLERİ
   4. ORTAK YARDIMCI SINIFLAR (.container, .section, .btn, .eyebrow, ...)
   5. HEADER (site-header, dropdown, mobil menü)
   6. FOOTER
   7. HERO
   8. COUNTDOWN (geri sayım sayacı)
   9. BREADCRUMBS
   10. BAŞKANIN MESAJI (president)
   11. PANELİSTLER (speaker-card, person-dialog)
   12. DÜZENLEME KURULU (committee)
   13. ZAMAN ÇİZELGESİ (timeline)
   14. DÜZENLEYEN (organizer)
   15. GEO-INFO (Zirve Hakkında kısa cevaplar)
   16. SSS (FAQ accordion)
   17. İLETİŞİM (contact)
   18. SOSYAL MEDYA (social-links)
   19. GALERİ + LIGHTBOX
   20. VİDEO GALERİSİ
   21. KURUMSAL KİMLİK KARTLARI (brand-card)
   22. GEÇMİŞ ZİRVELER (past-card, summit-hero, panelist-list)
   23. 404 SAYFASI
   24. ÖZEL İMLEÇ (custom cursor)
   25. KAYDIRMADA BELİRME (data-reveal) ANİMASYONU
   ========================================================================== */

/* ---------- 1. YAZI TİPLERİ ----------
   ÖNEMLİ: Her ağırlık (weight) için İKİ dosya yükleniyor: "latin" (temel
   Latin harfler: a-z, é, ü, ö, ç, ı gibi) ve "latin-ext" (ş, ğ, İ gibi
   TÜRKÇEYE ÖZGÜ harfler dahil, Orta Avrupa dilleri de kapsayan genişletilmiş
   Latin seti). Tarayıcı, ekrandaki her karaktere göre hangi dosyayı
   kullanacağına `unicode-range` ile otomatik karar verir — siz hiçbir şey
   yapmazsınız, ama HER İKİ dosya da burada tanımlı olmalı; yalnızca "latin"
   dosyaları yüklenirse ş/ğ/İ gibi harfler tofu kutucuğu veya farklı bir
   yedek fontla görünür. Yeni bir yazı tipi ağırlığı eklerken bu ikiliyi
   (latin + latin-ext) birlikte ekleyin. */
@font-face {
  font-family: "Manrope";
  src: url("../fonts/manrope-latin-400-normal.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "Manrope";
  src: url("../fonts/manrope-latin-ext-400-normal.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: "Manrope";
  src: url("../fonts/manrope-latin-500-normal.woff2") format("woff2");
  font-weight: 500;
  font-style: normal;
  font-display: swap;
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "Manrope";
  src: url("../fonts/manrope-latin-ext-500-normal.woff2") format("woff2");
  font-weight: 500;
  font-style: normal;
  font-display: swap;
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: "Manrope";
  src: url("../fonts/manrope-latin-600-normal.woff2") format("woff2");
  font-weight: 600;
  font-style: normal;
  font-display: swap;
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "Manrope";
  src: url("../fonts/manrope-latin-ext-600-normal.woff2") format("woff2");
  font-weight: 600;
  font-style: normal;
  font-display: swap;
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: "Manrope";
  src: url("../fonts/manrope-latin-700-normal.woff2") format("woff2");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "Manrope";
  src: url("../fonts/manrope-latin-ext-700-normal.woff2") format("woff2");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: "Cormorant Garamond";
  src: url("../fonts/cormorant-garamond-latin-400-normal.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "Cormorant Garamond";
  src: url("../fonts/cormorant-garamond-latin-ext-400-normal.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: "Cormorant Garamond";
  src: url("../fonts/cormorant-garamond-latin-500-normal.woff2") format("woff2");
  font-weight: 500;
  font-style: normal;
  font-display: swap;
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "Cormorant Garamond";
  src: url("../fonts/cormorant-garamond-latin-ext-500-normal.woff2") format("woff2");
  font-weight: 500;
  font-style: normal;
  font-display: swap;
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: "Cormorant Garamond";
  src: url("../fonts/cormorant-garamond-latin-600-normal.woff2") format("woff2");
  font-weight: 600;
  font-style: normal;
  font-display: swap;
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "Cormorant Garamond";
  src: url("../fonts/cormorant-garamond-latin-ext-600-normal.woff2") format("woff2");
  font-weight: 600;
  font-style: normal;
  font-display: swap;
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: "Cormorant Garamond";
  src: url("../fonts/cormorant-garamond-latin-400-italic.woff2") format("woff2");
  font-weight: 400;
  font-style: italic;
  font-display: swap;
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "Cormorant Garamond";
  src: url("../fonts/cormorant-garamond-latin-ext-400-italic.woff2") format("woff2");
  font-weight: 400;
  font-style: italic;
  font-display: swap;
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

/* ---------- 2. TASARIM TOKENLARI ---------- */
:root {
  --brand-navy-950: #131d38;
  --brand-navy-900: #1c2a4d;
  --brand-navy-800: #263968;
  --brand-navy-700: #32467a;
  --brand-navy-600: #445890;
  --brand-navy-500: #5c70a6;
  --brand-navy-100: #e6e9f2;
  --brand-navy-50: #f3f5fa;

  --brand-teal: #1aa29a;
  --brand-sky: #35a8df;
  --brand-green: #6bb858;
  --brand-amber: #f8b529;

  --brand-ivory: #faf8f3;
  --brand-paper: #f6f4ee;
  --brand-stone-200: #e8e4d9;
  --brand-stone-400: #c9c2ae;
  --brand-ink: #171c2c;

  --color-bg: var(--brand-ivory);
  --color-surface: #ffffff;
  --color-surface-muted: var(--brand-paper);
  --color-text: var(--brand-ink);
  --color-text-muted: #565c6e;
  --color-text-inverse: #f6f4ee;
  --color-border: rgba(23, 28, 44, 0.12);
  --color-border-strong: rgba(23, 28, 44, 0.28);

  --color-primary: var(--brand-navy-800);
  --color-primary-strong: var(--brand-navy-950);
  --color-accent: var(--brand-amber);
  --color-accent-ink: var(--brand-navy-950);
  --color-focus: #1c6fd6;

  --theme-health: var(--brand-teal);
  --theme-engineering: var(--brand-sky);
  --theme-education: var(--brand-green);
  --theme-sport: var(--brand-amber);

  --font-display: "Cormorant Garamond", "Times New Roman", ui-serif, serif;
  --font-body: "Manrope", "Segoe UI", ui-sans-serif, system-ui, -apple-system, sans-serif;

  --fs-display-xl: clamp(2.75rem, 3.2vw + 2rem, 7rem);
  --fs-display-lg: clamp(2.25rem, 2.4vw + 1.6rem, 4.75rem);
  --fs-display-md: clamp(1.85rem, 1.6vw + 1.4rem, 3.1rem);
  --fs-display-sm: clamp(1.4rem, 1vw + 1.1rem, 2.05rem);
  --fs-eyebrow: clamp(0.72rem, 0.2vw + 0.68rem, 0.82rem);
  --fs-body-lg: clamp(1.05rem, 0.3vw + 0.95rem, 1.25rem);
  --fs-body: clamp(0.95rem, 0.15vw + 0.9rem, 1.05rem);
  --fs-small: clamp(0.82rem, 0.1vw + 0.78rem, 0.9rem);

  --lh-tight: 1.05;
  --lh-snug: 1.25;
  --lh-normal: 1.55;
  --lh-relaxed: 1.75;

  --tracking-eyebrow: 0.16em;
  --tracking-tight: -0.01em;
  --tracking-tighter: -0.02em;

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 2.75rem;
  --space-8: 3.5rem;
  --space-9: 5rem;
  --space-10: 7rem;
  --space-11: 9.5rem;

  --container-max: 1360px;
  --container-narrow: 900px;
  --container-pad: clamp(1.25rem, 4vw, 3.5rem);
  --header-h: 84px;
  --header-h-scrolled: 68px;

  --radius-sm: 2px;
  --radius-md: 4px;
  --radius-lg: 8px;
  --shadow-sm: 0 1px 2px rgba(23, 28, 44, 0.06);
  --shadow-md: 0 8px 24px -8px rgba(23, 28, 44, 0.18);
  --shadow-lg: 0 24px 64px -16px rgba(23, 28, 44, 0.24);

  --ease-standard: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --duration-fast: 180ms;
  --duration-normal: 320ms;
  --duration-slow: 480ms;
  --duration-page: 420ms;

  --z-cursor: 9999;
  --z-modal: 900;
  --z-header: 800;
  --z-dropdown: 700;
  --z-overlay: 600;
}

/* ---------- 3. TEMEL SIFIRLAMA VE GÖVDE ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: auto;
}

@media (prefers-reduced-motion: no-preference) {
  html:focus-within {
    scroll-behavior: smooth;
  }
}

body {
  margin: 0;
  min-height: 100svh;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: var(--lh-normal);
  overflow-x: hidden;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

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

img {
  height: auto;
}

a {
  color: inherit;
}

button {
  font: inherit;
  color: inherit;
}

ul[class],
ol[class] {
  list-style: none;
  margin: 0;
  padding: 0;
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-display);
  font-weight: 500;
  line-height: var(--lh-tight);
  letter-spacing: var(--tracking-tight);
  margin: 0;
  color: var(--brand-navy-950);
}

p {
  margin: 0;
}

:focus-visible {
  outline: 2.5px solid var(--color-focus);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

.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;
}

.skip-link {
  position: fixed;
  top: -100%;
  left: var(--space-4);
  z-index: 10000;
  background: var(--brand-navy-950);
  color: #fff;
  padding: 0.85em 1.4em;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: var(--fs-small);
  transition: top var(--duration-fast) var(--ease-standard);
}

.skip-link:focus {
  top: var(--space-4);
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

/* ---------- 4. ORTAK YARDIMCI SINIFLAR ---------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

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

.section {
  padding-block: var(--space-9);
}

@media (max-width: 640px) {
  .section {
    padding-block: var(--space-7);
  }
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  font-family: var(--font-body);
  font-size: var(--fs-eyebrow);
  font-weight: 700;
  letter-spacing: var(--tracking-eyebrow);
  text-transform: uppercase;
  color: var(--color-primary);
}

.eyebrow::before {
  content: "";
  display: inline-block;
  width: 28px;
  height: 1.5px;
  background: currentColor;
}

.eyebrow--inverse {
  color: var(--brand-amber);
}

.visually-hidden-focusable:not(:focus):not(:focus-within) {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
}

.btn {
  --btn-fg: var(--color-text-inverse);
  --btn-bg: var(--brand-navy-950);
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.65em;
  padding: 0.95em 1.7em;
  background: var(--btn-bg);
  color: var(--btn-fg);
  font-weight: 600;
  font-size: var(--fs-small);
  letter-spacing: 0.02em;
  text-decoration: none;
  border: 1px solid var(--btn-bg);
  border-radius: var(--radius-sm);
  cursor: pointer;
  overflow: hidden;
  isolation: isolate;
  min-height: 44px;
  transition: color var(--duration-normal) var(--ease-standard);
}

.btn::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--color-accent);
  transform: translateX(-101%);
  transition: transform var(--duration-normal) var(--ease-out-expo);
  z-index: -1;
}

.btn:hover::before,
.btn:focus-visible::before {
  transform: translateX(0);
}

.btn:hover,
.btn:focus-visible {
  color: var(--accent-ink, var(--brand-navy-950));
}

.btn--ghost {
  --btn-bg: transparent;
  --btn-fg: var(--brand-navy-950);
  border-color: var(--color-border-strong);
}

.btn--ghost::before {
  background: var(--brand-navy-950);
}

.btn--ghost:hover,
.btn--ghost:focus-visible {
  color: #fff;
}

.link-underline {
  position: relative;
  text-decoration: none;
  padding-bottom: 0.15em;
  background-image: linear-gradient(currentColor, currentColor);
  background-size: 0% 1px;
  background-position: 0 100%;
  background-repeat: no-repeat;
  transition: background-size var(--duration-normal) var(--ease-out-expo);
}

.link-underline:hover,
.link-underline:focus-visible {
  background-size: 100% 1px;
}

.external-icon {
  display: inline-block;
  width: 0.8em;
  height: 0.8em;
  margin-inline-start: 0.35em;
  vertical-align: -0.05em;
  opacity: 0.7;
}

.icon {
  flex-shrink: 0;
}

/* ---------- 5. HEADER ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  height: var(--header-h);
  display: flex;
  align-items: center;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  transition: height var(--duration-normal) var(--ease-standard),
    background var(--duration-normal) var(--ease-standard),
    border-color var(--duration-normal) var(--ease-standard);
}

body[data-home="true"] .site-header:not([data-scrolled]) {
  background: linear-gradient(to bottom, rgba(19, 29, 56, 0.55), transparent);
  border-bottom-color: transparent;
  position: fixed;
  inset-inline: 0;
}

.site-header__logo-img--light {
  display: none;
}

body[data-home="true"] .site-header:not([data-scrolled]) .site-header__logo-img--default {
  display: none;
}

body[data-home="true"] .site-header:not([data-scrolled]) .site-header__logo-img--light {
  display: block;
}


body[data-home="true"] .site-header:not([data-scrolled]) .nav-link,
body[data-home="true"] .site-header:not([data-scrolled]) .nav-toggle {
  color: #fff;
}

.site-header[data-scrolled] {
  height: var(--header-h-scrolled);
  box-shadow: var(--shadow-sm);
}

.site-header__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  width: 100%;
}

.site-header__logo img {
  height: 40px;
  width: auto;
  transition: filter var(--duration-normal) var(--ease-standard);
}

.site-header[data-scrolled] .site-header__logo img {
  height: 34px;
}

.site-header__nav {
  display: none;
}

@media (min-width: 1024px) {
  .site-header__nav {
    display: block;
  }

  .site-header__nav ul {
    display: flex;
    align-items: center;
    gap: var(--space-6);
    list-style: none;
    margin: 0;
    padding: 0;
  }

  .site-header__nav li {
    position: relative;
  }
}

.nav-link,
.nav-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.35em;
  background: none;
  border: none;
  padding: 0.5em 0.1em;
  font-size: var(--fs-small);
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--brand-navy-950);
  text-decoration: none;
  cursor: pointer;
  min-height: 44px;
}

.nav-toggle svg {
  transition: transform var(--duration-fast) var(--ease-standard);
}

.nav-toggle[aria-expanded="true"] svg {
  transform: rotate(180deg);
}

.dropdown {
  position: absolute;
  top: calc(100% + 14px);
  left: 50%;
  transform: translate(-50%, 8px);
  min-width: 260px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-lg);
  padding: var(--space-3);
  display: flex;
  flex-direction: column;
  gap: 2px;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity var(--duration-normal) var(--ease-out-expo),
    transform var(--duration-normal) var(--ease-out-expo),
    visibility var(--duration-normal);
  z-index: var(--z-dropdown);
}

.has-dropdown.is-open .dropdown {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translate(-50%, 0);
}

.dropdown a {
  display: flex;
  align-items: center;
  gap: 0.6em;
  padding: 0.75em 0.85em;
  text-decoration: none;
  color: var(--color-text);
  font-size: var(--fs-small);
  font-weight: 500;
  border-radius: var(--radius-sm);
  min-height: 44px;
}

.dropdown a:hover,
.dropdown a:focus-visible {
  background: var(--color-surface-muted);
  color: var(--color-primary);
}

.site-header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-5);
}

.site-header__lang {
  display: none;
}

@media (min-width: 1024px) {
  .site-header__lang {
    display: inline-flex;
  }
}

body[data-home="true"] .site-header:not([data-scrolled]) .lang-switch a {
  color: rgba(255, 255, 255, 0.75);
}

body[data-home="true"] .site-header:not([data-scrolled]) .lang-switch a.is-active {
  color: #fff;
}

.menu-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: none;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-sm);
  cursor: pointer;
  color: inherit;
}

body[data-home="true"] .site-header:not([data-scrolled]) .menu-toggle {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.4);
}

@media (min-width: 1024px) {
  .menu-toggle {
    display: none;
  }
}

.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  background: var(--brand-navy-950);
  color: #fff;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}

.mobile-menu[hidden] {
  display: none;
}

.mobile-menu__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-h);
  flex-shrink: 0;
}

.mobile-menu__head .menu-toggle {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.3);
}

.mobile-menu__title {
  font-family: var(--font-display);
  font-size: 1.3rem;
}

.mobile-menu__nav {
  display: flex;
  flex-direction: column;
  padding-block: var(--space-6);
  gap: var(--space-2);
}

.mobile-menu__nav details {
  border-bottom: 1px solid rgba(255, 255, 255, 0.14);
}

.mobile-menu__nav summary {
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.1em 0.2em;
  font-family: var(--font-display);
  font-size: 1.5rem;
  cursor: pointer;
  min-height: 44px;
}

.mobile-menu__nav summary::-webkit-details-marker {
  display: none;
}

.mobile-menu__nav summary::after {
  content: "+";
  font-size: 1.4rem;
  font-family: var(--font-body);
}

.mobile-menu__nav details[open] summary::after {
  content: "–";
}

.mobile-submenu {
  display: flex;
  flex-direction: column;
  padding-bottom: 1em;
}

.mobile-submenu a {
  padding: 0.75em 0.5em;
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  font-size: var(--fs-body);
  display: flex;
  align-items: center;
  gap: 0.5em;
  min-height: 44px;
}

.mobile-menu__flat {
  padding: 1.1em 0.2em;
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: #fff;
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 255, 255, 0.14);
}

.mobile-menu__lang {
  margin-top: var(--space-6);
}

.mobile-menu__lang .lang-switch a {
  color: rgba(255, 255, 255, 0.75);
  font-size: 1.1rem;
}

.mobile-menu__lang .lang-switch a.is-active {
  color: #fff;
}

/* ---------- lang switch (used in header + mobile menu) ---------- */
.lang-switch {
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
  font-family: var(--font-body);
  font-size: var(--fs-small);
  font-weight: 700;
  letter-spacing: 0.04em;
  display: none;
}

.lang-switch a {
  text-decoration: none;
  color: var(--color-text-muted);
  padding: 0.3em 0.15em;
  min-height: 44px;
  min-width: 24px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.lang-switch a.is-active {
  color: var(--color-primary);
}

.lang-switch__sep {
  color: var(--color-border-strong);
}

/* ---------- 6. FOOTER ---------- */
.site-footer {
  background: var(--brand-navy-950);
  color: rgba(246, 244, 238, 0.86);
  padding-block: var(--space-6);
}

.site-footer__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 0.5em;
}

.site-footer__copy {
  font-size: var(--fs-small);
  color: rgba(246, 244, 238, 0.55);
  margin: 0;
}

.site-footer__org {
  font-size: var(--fs-small);
  color: rgba(246, 244, 238, 0.78);
  text-decoration: none;
}

.site-footer__org:hover,
.site-footer__org:focus-visible {
  color: #fff;
  text-decoration: underline;
}

/* ---------- 7. HERO ---------- */
.hero {
  position: relative;
  background: radial-gradient(ellipse 80% 60% at 50% 15%, var(--brand-navy-800) 0%, var(--brand-navy-950) 65%);
  padding-block: clamp(6rem, 15vh, 8.5rem) clamp(4.5rem, 10vh, 6.5rem);
}

.hero__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  color: #fff;
}

.hero__title {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: var(--fs-display-lg);
  line-height: var(--lh-tight);
  letter-spacing: var(--tracking-tighter);
  max-width: 20ch;
  margin-block: 0.35em 0.5em;
  color: #fff;
}

.hero__title-accent {
  color: var(--brand-amber);
  font-style: italic;
}

.hero__desc {
  max-width: 56ch;
  font-size: var(--fs-body-lg);
  color: rgba(255, 255, 255, 0.82);
}

.hero__countdown-row {
  margin-top: clamp(3rem, 7vh, 4.5rem);
  padding-top: var(--space-6);
  border-top: 1px solid rgba(255, 255, 255, 0.16);
  width: 100%;
  max-width: fit-content;
}

.hero__countdown-row .countdown__inner {
  align-items: center;
  text-align: center;
}

.hero__countdown-row .countdown__grid {
  justify-content: center;
}

.hero__countdown-row .countdown__unit {
  align-items: center;
}

@media (max-width: 640px) {
  .hero {
    padding-block: clamp(5.5rem, 14vh, 7rem) 3rem;
  }

  .hero__title {
    max-width: 14ch;
  }
}

/* ---------- 8. COUNTDOWN ---------- */
.countdown {
  background: var(--brand-navy-950);
  color: #fff;
  padding-block: var(--space-8);
}

.countdown--embedded {
  background: transparent;
  padding-block: 0;
}

.countdown__inner {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-6);
}

.countdown--embedded .countdown__inner {
  text-align: left;
  align-items: flex-start;
  gap: var(--space-3);
}

.countdown .eyebrow {
  color: var(--brand-amber);
}

.countdown__grid {
  display: flex;
  gap: clamp(1rem, 4vw, 2.5rem);
  flex-wrap: wrap;
  justify-content: center;
}

.countdown--embedded .countdown__grid {
  justify-content: flex-start;
}

.countdown__unit {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 64px;
}

.countdown--embedded .countdown__unit {
  align-items: flex-start;
}

.countdown__num {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3.25rem);
  font-weight: 500;
  line-height: 1;
  font-variant-numeric: tabular-nums;
  color: #fff;
}

.countdown--embedded .countdown__num {
  font-size: clamp(1.75rem, 3.2vw, 2.75rem);
}

.countdown__label {
  margin-top: 0.5em;
  font-size: var(--fs-eyebrow);
  letter-spacing: var(--tracking-eyebrow);
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.6);
}

.countdown__state {
  font-family: var(--font-display);
  font-size: var(--fs-display-sm);
}

/* ---------- 9. BREADCRUMBS ---------- */
.breadcrumbs {
  padding-block: var(--space-4);
  border-bottom: 1px solid var(--color-border);
}

.breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.4em;
  font-size: var(--fs-small);
  text-align: center;
}

.breadcrumbs li {
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
}

.breadcrumbs a {
  color: var(--color-text-muted);
  text-decoration: none;
}

.breadcrumbs a:hover,
.breadcrumbs a:focus-visible {
  color: var(--color-primary);
  text-decoration: underline;
}

.breadcrumbs [aria-current="page"] {
  color: var(--color-text);
  font-weight: 600;
}

.breadcrumbs__sep {
  color: var(--color-border-strong);
}

/* ---------- 10. BAŞKANIN MESAJI ---------- */
.president__grid {
  display: grid;
  gap: var(--space-7);
  align-items: center;
}

@media (min-width: 900px) {
  .president__grid {
    grid-template-columns: minmax(0, 340px) 1fr;
    gap: var(--space-9);
  }
}

.president__media {
  aspect-ratio: 4 / 5;
  overflow: hidden;
  background: var(--brand-navy-100);
}

.president__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.president__media.img-fallback {
  background: linear-gradient(160deg, var(--brand-navy-700), var(--brand-navy-950));
}

.president__media.img-fallback img {
  display: none;
}

.president__quote {
  margin: 0;
  font-family: var(--font-display);
  font-style: italic;
  font-size: var(--fs-display-sm);
  line-height: var(--lh-snug);
  color: var(--brand-navy-950);
  position: relative;
  padding-left: 1.1em;
  border-left: 2px solid var(--color-accent);
  font-size: 1.3rem;   /* --fs-display-sm yerine sabit bir değer */
  text-align: justify;
  text-align-last: left;
}

.president__quote p + p {
  margin-top: 0.9em;
}

.president__signature {
  display: flex;
  flex-direction: column;
  margin-top: var(--space-6);
  padding-left: 1.1em;
}

.president__name {
  font-weight: 700;
  color: var(--brand-navy-950);
}

.president__title {
  font-size: var(--fs-small);
  color: var(--color-text-muted);
}

/* ---------- 11. PANELİSTLER (speaker-card + person-dialog) ---------- */
.speakers__head {
  max-width: 42rem;
  margin-bottom: var(--space-7);
}

.speakers__title {
  font-size: var(--fs-display-md);
  margin-top: 0.4em;
}

.speakers__grid {
  display: grid;
  gap: var(--space-6) var(--space-5);
  grid-template-columns: repeat(2, 1fr);
}

@media (min-width: 720px) {
  .speakers__grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.speaker-card__trigger {
  all: unset;
  display: flex;
  flex-direction: column;
  width: 100%;
  cursor: pointer;
  box-sizing: border-box;
}

.speaker-card__media {
  display: block;
  aspect-ratio: 4 / 5;
  overflow: hidden;
  background: var(--brand-navy-100);
  position: relative;
}

.speaker-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--duration-slow) var(--ease-standard);
}

.speaker-card__trigger:hover .speaker-card__media img,
.speaker-card__trigger:focus-visible .speaker-card__media img {
  transform: scale(1.045);
}

.speaker-card__media.img-fallback {
  background: linear-gradient(150deg, var(--brand-navy-700), var(--brand-navy-950));
}

.speaker-card__media.img-fallback img {
  display: none;
}

.speaker-card__body {
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border);
  margin-top: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: 0.3em;
  text-align: left;
}

.speaker-card__name {
  font-family: var(--font-display);
  font-size: 1.4rem;
  color: var(--brand-navy-950);
  transition: transform var(--duration-normal) var(--ease-standard);
}

.speaker-card__trigger:hover .speaker-card__name,
.speaker-card__trigger:focus-visible .speaker-card__name {
  transform: translateX(4px);
}

.speaker-card__title {
  font-size: var(--fs-small);
  color: var(--color-text-muted);
}

.speaker-card__cta {
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
  margin-top: 0.6em;
  font-size: var(--fs-small);
  font-weight: 700;
  letter-spacing: 0.03em;
  color: var(--color-primary);
}

.speaker-card__cta svg {
  transition: transform var(--duration-fast) var(--ease-standard);
}

.speaker-card__trigger:hover .speaker-card__cta svg,
.speaker-card__trigger:focus-visible .speaker-card__cta svg {
  transform: translateX(4px);
}

.person-dialog {
  border: none;
  padding: 0;
  max-width: min(760px, 92vw);
  width: 100%;
  background: var(--color-surface);
  box-shadow: var(--shadow-lg);
  color: var(--color-text);
}

.person-dialog::backdrop {
  background: rgba(19, 29, 56, 0.72);
  backdrop-filter: blur(2px);
}

.person-dialog__inner {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 260px) 1fr;
}

.person-dialog__close {
  position: absolute;
  top: var(--space-3);
  right: var(--space-3);
  width: 44px;
  height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 50%;
  cursor: pointer;
  z-index: 2;
}

.person-dialog__media {
  background: var(--brand-navy-100);
  min-height: 220px;
}

.person-dialog__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.person-dialog__media.img-fallback {
  background: linear-gradient(160deg, var(--brand-navy-700), var(--brand-navy-950));
}

.person-dialog__media.img-fallback img {
  display: none;
}

.person-dialog__body {
  padding: var(--space-6) var(--space-6) var(--space-7);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.person-dialog__body h3 {
  font-size: var(--fs-display-sm);
  margin-bottom: 0.3em;
}

.person-dialog__role {
  color: var(--color-primary);
  font-weight: 600;
  font-size: var(--fs-small);
  margin-bottom: var(--space-4);
}

.person-dialog__bio {
  color: var(--color-text-muted);
  line-height: var(--lh-relaxed);
  font-size: var(--fs-small);   /* yeni satır */
  text-align: justify;
  text-align-last: left;
}

@media (max-width: 640px) {
  .person-dialog {
    max-width: 100vw;
    max-height: 88svh;
    margin: auto auto 0;
    border-radius: 12px 12px 0 0;
    overflow-y: auto;
  }

  .person-dialog__inner {
    grid-template-columns: 1fr;
  }

  .person-dialog__media {
    min-height: 180px;
  }
}

/* ---------- 12. DÜZENLEME KURULU ---------- */
.committee__head {
  max-width: 42rem;
  margin-bottom: var(--space-7);
}

.committee__title {
  font-size: var(--fs-display-md);
  margin-top: 0.4em;
}

.committee__grid {
  display: grid;
  gap: var(--space-5) var(--space-4);
  grid-template-columns: repeat(2, 1fr);
}

@media (min-width: 720px) {
  .committee__grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.committee-card__trigger {
  all: unset;
  display: flex;
  flex-direction: column;
  width: 100%;
  cursor: pointer;
  box-sizing: border-box;
}

.committee-card__media {
  aspect-ratio: 1 / 1;
  overflow: hidden;
  background: var(--brand-navy-100);
  border-radius: 50%;
  max-width: 140px;
  margin-bottom: var(--space-3);
}

.committee-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(35%);
  transition: filter var(--duration-normal) var(--ease-standard);
}

.committee-card__trigger:hover .committee-card__media img,
.committee-card__trigger:focus-visible .committee-card__media img {
  filter: grayscale(0%);
}

.committee-card__media.img-fallback {
  background: linear-gradient(150deg, var(--brand-navy-500), var(--brand-navy-900));
}

.committee-card__media.img-fallback img {
  display: none;
}

.committee-card__name {
  font-family: var(--font-display);
  font-size: 1.1rem;
  color: var(--brand-navy-950);
}

.committee-card__role {
  font-size: var(--fs-small);
  color: var(--color-text-muted);
  margin-top: 0.2em;
}

/* ---------- 13. ZAMAN ÇİZELGESİ ---------- */
.timeline {
  background: var(--color-surface-muted);
}

.timeline__head {
  max-width: 42rem;
  margin-bottom: var(--space-8);
}

.timeline__title {
  font-size: var(--fs-display-md);
  margin-top: 0.4em;
}

.timeline__subtitle {
  color: var(--color-text-muted);
  margin-top: var(--space-3);
}

.timeline__list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--color-border);
}

@media (min-width: 900px) {
  .timeline__list {
    flex-direction: row;
    border-top: none;
    border-left: 1px solid var(--color-border);
  }
}

.timeline__item {
  flex: 1;
  border-bottom: 1px solid var(--color-border);
}

@media (min-width: 900px) {
  .timeline__item {
    border-bottom: none;
    border-right: 1px solid var(--color-border);
  }

  .timeline__item:last-child {
    border-right: none;
  }
}

.timeline__link {
  display: flex;
  flex-direction: column;
  gap: 0.5em;
  padding: var(--space-6) var(--space-5);
  text-decoration: none;
  color: var(--color-text);
  height: 100%;
  position: relative;
  transition: background var(--duration-normal) var(--ease-standard);
}

.timeline__link:hover,
.timeline__link:focus-visible {
  background: var(--color-surface);
}

.timeline__year {
  font-family: var(--font-display);
  font-size: 2.4rem;
  color: var(--node-color);
}

.timeline__marker {
  width: 34px;
  height: 2px;
  background: var(--node-color);
}

.timeline__category {
  font-weight: 700;
  letter-spacing: 0.02em;
}

.timeline__theme {
  font-size: var(--fs-small);
  color: var(--color-text-muted);
}

.timeline__badge {
  position: absolute;
  top: var(--space-5);
  right: var(--space-5);
  background: var(--node-color);
  color: var(--brand-navy-950);
  font-size: var(--fs-eyebrow);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.3em 0.6em;
}

.timeline__item.is-current {
  background: linear-gradient(180deg, color-mix(in srgb, var(--node-color) 10%, transparent), transparent);
}

/* ---------- 14. DÜZENLEYEN ---------- */
.organizer {
  background: var(--brand-navy-950);
  color: #fff;
  padding-block: var(--space-9);
  text-align: center;
}

.organizer__title {
  font-family: var(--font-display);
  font-size: var(--fs-display-md);
  color: #fff;
  font-size: 1.8rem;   /* --fs-display-sm yerine sabit değer */
  margin-inline: auto;
}

.organizer__subtitle {
  margin-top: var(--space-4);
  color: rgba(255, 255, 255, 0.65);
  max-width: 46ch;
  margin-inline: auto;
}

/* ---------- 15. GEO-INFO ---------- */
.geo-info__head {
  max-width: 42rem;
  margin-bottom: var(--space-7);
}

.geo-info__title {
  font-size: var(--fs-display-md);
  margin-top: 0.4em;
}

.geo-info__grid {
  display: grid;
  gap: var(--space-6);
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.geo-info__item dt {
  font-weight: 700;
  color: var(--brand-navy-950);
  margin-bottom: 0.5em;
  font-size: var(--fs-body-lg);
}

.geo-info__item dd {
  margin: 0;
  color: var(--color-text-muted);
  line-height: var(--lh-relaxed);
}

/* ---------- 16. SSS (FAQ) ---------- */
.faq__head {
  margin-bottom: var(--space-6);
}

.faq__title {
  font-size: var(--fs-display-md);
  margin-top: 0.4em;
}

.faq__list {
  display: flex;
  flex-direction: column;
}

.faq__item {
  border-bottom: 1px solid var(--color-border);
}

.faq__item summary {
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: 1.2em 0.1em;
  cursor: pointer;
  font-weight: 600;
  min-height: 44px;
}

.faq__item summary::-webkit-details-marker {
  display: none;
}

.faq__item summary svg {
  flex-shrink: 0;
  transition: transform var(--duration-normal) var(--ease-standard);
}

.faq__item[open] summary svg {
  transform: rotate(45deg);
}

.faq__item p {
  padding-bottom: 1.4em;
  color: var(--color-text-muted);
  max-width: 62ch;
  line-height: var(--lh-relaxed);
}

/* ---------- 17. İLETİŞİM ---------- */
.contact__grid {
  display: grid;
  gap: var(--space-8);
}

.contact__grid > * {
  min-width: 0;
}

@media (min-width: 900px) {
  .contact__grid {
    grid-template-columns: 1fr 1fr;
    align-items: stretch;
  }
}

.contact__title {
  font-size: var(--fs-display-md);
  margin-top: 0.4em;
  margin-bottom: var(--space-6);
}

.contact__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.contact__list dt {
  display: flex;
  align-items: center;
  gap: 0.5em;
  font-weight: 700;
  font-size: var(--fs-small);
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 0.4em;
}

.contact__list dd {
  margin: 0;
  color: var(--color-text);
  line-height: var(--lh-relaxed);
  max-width: 40ch;
}

.contact__map {
  position: relative;
  aspect-ratio: 4 / 3;
  min-height: 320px;
  min-width: 0;
  width: 100%;
  overflow: hidden;
  border: 1px solid var(--color-border);
  background: var(--color-surface-muted);
}

@media (min-width: 900px) {
  .contact__map {
    aspect-ratio: auto;
  }
}

.contact__map iframe {
  width: 100%;
  height: 100%;
  max-width: 100%;
  border: 0;
  display: block;
  filter: grayscale(15%) contrast(1.02);
}

.social-section__inner {
  display: flex;
  justify-content: center;
  text-align: center;
}

/* ---------- 18. SOSYAL MEDYA ---------- */
.social-links__title {
  font-family: var(--font-display);
  font-size: var(--fs-display-sm);
  margin-bottom: var(--space-4);
  color: var(--brand-navy-950);
}

.social-links ul {
  display: flex;
  gap: var(--space-3);
  list-style: none;
  margin: 0;
  padding: 0;
}

.social-links a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--color-border-strong);
  color: var(--brand-navy-950);
  text-decoration: none;
  transition: background var(--duration-fast) var(--ease-standard), color var(--duration-fast) var(--ease-standard), border-color var(--duration-fast) var(--ease-standard);
}

.social-links a:hover,
.social-links a:focus-visible {
  background: var(--brand-navy-950);
  color: #fff;
  border-color: var(--brand-navy-950);
}

.social-links--compact a {
  width: 38px;
  height: 38px;
  border-color: rgba(255, 255, 255, 0.28);
  color: rgba(246, 244, 238, 0.85);
}

.social-links--compact a:hover,
.social-links--compact a:focus-visible {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.5);
}

/* ---------- 19. GALERİ + LIGHTBOX ---------- */
.gallery__head {
  margin-bottom: var(--space-6);
}

.gallery__empty {
  color: var(--color-text-muted);
  font-style: italic;
}

.gallery__grid {
  display: grid;
  gap: var(--space-3);
  grid-template-columns: repeat(2, 1fr);
}

@media (min-width: 720px) {
  .gallery__grid {
    grid-template-columns: repeat(4, 1fr);
    grid-auto-rows: 220px;
  }

  .gallery__grid .gallery__item:nth-child(6n + 1) {
    grid-column: span 2;
    grid-row: span 2;
  }
}

.gallery__item {
  all: unset;
  display: block;
  cursor: pointer;
  overflow: hidden;
  aspect-ratio: 4 / 3;
  box-sizing: border-box;
}

@media (min-width: 720px) {
  .gallery__item {
    aspect-ratio: auto;
    height: 100%;
  }
}

.gallery__item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--duration-slow) var(--ease-standard);
}

.gallery__item:hover img,
.gallery__item:focus-visible img {
  transform: scale(1.04);
}

.lightbox {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  background: rgba(10, 14, 26, 0.94);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-6);
}

.lightbox[hidden] {
  display: none;
}

.lightbox img {
  max-width: min(1100px, 90vw);
  max-height: 84vh;
  object-fit: contain;
}

.lightbox__close,
.lightbox__nav {
  position: absolute;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.lightbox__close {
  top: var(--space-5);
  right: var(--space-5);
}

.lightbox__nav--prev {
  left: var(--space-5);
  top: 50%;
  transform: translateY(-50%);
}

.lightbox__nav--next {
  right: var(--space-5);
  top: 50%;
  transform: translateY(-50%);
}

/* ---------- 20. VİDEO GALERİSİ ---------- */
.video-gallery__head {
  margin-bottom: var(--space-6);
}

.video-gallery__empty {
  color: var(--color-text-muted);
  font-style: italic;
}

.video-gallery__grid {
  display: grid;
  gap: var(--space-5);
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
}

.video-card__poster {
  all: unset;
  display: block;
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  cursor: pointer;
  background: var(--brand-navy-950);
}

.video-card__poster img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.85;
  transition: opacity var(--duration-normal) var(--ease-standard);
}

.video-card__poster:hover img,
.video-card__poster:focus-visible img {
  opacity: 1;
}

.video-card__play {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
}

.video-card__play svg {
  width: 60px;
  height: 60px;
  padding: 18px;
  border-radius: 50%;
  background: rgba(19, 29, 56, 0.55);
}

.video-card iframe {
  width: 100%;
  aspect-ratio: 16 / 9;
  border: 0;
}

.video-card__title {
  margin-top: var(--space-3);
  font-size: var(--fs-small);
  color: var(--color-text-muted);
}

/* ---------- 21. KURUMSAL KİMLİK KARTLARI ---------- */
.page-head__title {
  font-size: var(--fs-display-lg);
  margin-block: 0.3em 0.5em;
}

.page-head__desc {
  color: var(--color-text-muted);
  max-width: 60ch;
  line-height: var(--lh-relaxed);
}

.brand-grid {
  display: grid;
  gap: var(--space-5);
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
}

.brand-card {
  border: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  background: var(--color-surface);
  transition: box-shadow var(--duration-normal) var(--ease-standard), transform var(--duration-normal) var(--ease-standard);
}

.brand-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.brand-card__media {
  aspect-ratio: 4 / 3;
  background: var(--color-surface-muted);
  overflow: hidden;
}

.brand-card__media img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: var(--space-4);
  box-sizing: border-box;
}

.brand-card__media.img-fallback {
  display: flex;
  align-items: center;
  justify-content: center;
}

.brand-card__media.img-fallback img {
  display: none;
}

.brand-card__body {
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: 0.4em;
  flex: 1;
}

.brand-card__name {
  font-size: 1.15rem;
  font-family: var(--font-display);
}

.brand-card__desc {
  color: var(--color-text-muted);
  font-size: var(--fs-small);
  flex: 1;
}

.brand-card__files {
  display: flex;
  gap: 0.6em;
  margin-top: var(--space-3);
  flex-wrap: wrap;
}

.brand-card__file {
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
  font-size: var(--fs-eyebrow);
  font-weight: 700;
  letter-spacing: 0.03em;
  color: var(--color-primary);
  text-decoration: none;
  border: 1px solid var(--color-border-strong);
  padding: 0.4em 0.7em;
  min-height: 32px;
}

.brand-card__file:hover,
.brand-card__file:focus-visible {
  background: var(--brand-navy-950);
  color: #fff;
  border-color: var(--brand-navy-950);
}

/* ---------- 22. GEÇMİŞ ZİRVELER ---------- */
.past-grid {
  display: grid;
  gap: var(--space-6);
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.past-card {
  text-decoration: none;
  color: var(--color-text);
  display: block;
  border: 1px solid var(--color-border);
  transition: transform var(--duration-normal) var(--ease-standard), box-shadow var(--duration-normal) var(--ease-standard);
}

.past-card:hover,
.past-card:focus-visible {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.past-card__media {
  display: block;
  aspect-ratio: 4 / 3;
  background: var(--color-surface-muted);
  overflow: hidden;
  border-bottom: 3px solid var(--node-color);
}

.past-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.past-card__media.img-fallback {
  background: linear-gradient(150deg, var(--node-color), var(--brand-navy-950) 80%);
}

.past-card__media.img-fallback img {
  display: none;
}

.past-card__body {
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: 0.2em;
}

.past-card__year {
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--node-color);
}

.past-card__name {
  font-weight: 700;
}

.past-card__theme {
  color: var(--color-text-muted);
  font-size: var(--fs-small);
}

.summit-hero {
  position: relative;
  min-height: 56svh;
  display: flex;
  align-items: flex-end;
  color: #fff;
  background: var(--brand-navy-950);
}

.summit-hero__media {
  position: absolute;
  inset: 0;
}

.summit-hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.summit-hero.img-fallback .summit-hero__media img {
  display: none;
}

.summit-hero.img-fallback .summit-hero__media {
  background: linear-gradient(150deg, var(--theme-color), var(--brand-navy-950) 75%);
}

.summit-hero__scrim {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(19, 29, 56, 0.35), rgba(19, 29, 56, 0.88));
}

.summit-hero__content {
  position: relative;
  padding-block: var(--space-8) var(--space-7);
}

.summit-hero .eyebrow--inverse {
  color: var(--theme-color);
}

.summit-hero__title {
  font-size: var(--fs-display-lg);
  color: #fff;
  max-width: 22ch;
  margin-block: 0.3em 0.5em;
}

.summit-hero__meta {
  display: flex;
  gap: 0.6em;
  color: rgba(255, 255, 255, 0.75);
  font-size: var(--fs-body-lg);
}

.summit-intro__text {
  font-family: var(--font-display);
    font-size: 1.6rem;   /* --fs-display-sm yerine sabit değer */
  line-height: var(--lh-snug);
  color: var(--brand-navy-950)
   text-align: center;
  text-align-last: center;
}

.panelist-list__title {
  font-size: var(--fs-display-md);
  margin-top: 0.4em;
  margin-bottom: var(--space-6);
}

.panelist-list__grid {
  display: grid;
  gap: 1px;
  background: var(--color-border);
  border: 1px solid var(--color-border);
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
}

.panelist-list__item {
  background: var(--color-surface);
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: 0.3em;
}

.panelist-list__name {
  font-family: var(--font-display);
  font-size: 1.2rem;
  color: var(--brand-navy-950);
}

.panelist-list__role {
  font-size: var(--fs-small);
  color: var(--color-text-muted);
}

/* ---------- 23. 404 SAYFASI ---------- */
.not-found {
  min-height: 60svh;
  display: flex;
  align-items: center;
}

.not-found__inner {
  text-align: center;
}

.not-found__code {
  font-family: var(--font-display);
  font-size: clamp(4rem, 12vw, 8rem);
  color: var(--brand-navy-100);
  line-height: 1;
}

.not-found__title {
  font-size: var(--fs-display-md);
  margin-top: -1.2rem;
}

.not-found__en {
  color: var(--color-text-muted);
  font-style: italic;
}

.not-found__desc {
  margin-top: var(--space-5);
  color: var(--color-text-muted);
  line-height: var(--lh-relaxed);
}

.not-found__actions {
  margin-top: var(--space-7);
  display: flex;
  gap: var(--space-4);
  justify-content: center;
  flex-wrap: wrap;
}

/* ---------- 24. ÖZEL İMLEÇ ---------- */
.custom-cursor {
  position: fixed;
  top: 0;
  left: 0;
  z-index: var(--z-cursor);
  pointer-events: none;
  display: none;
  transform: translate(-50%, -50%);
  will-change: transform;
}

html.has-fine-pointer .custom-cursor {
  display: flex;
  align-items: center;
  justify-content: center;
}

html.has-fine-pointer {
  cursor: none;
}

html.has-fine-pointer a,
html.has-fine-pointer button,
html.has-fine-pointer summary {
  cursor: none;
}

.custom-cursor__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--brand-navy-950);
  transition: width var(--duration-fast) var(--ease-standard), height var(--duration-fast) var(--ease-standard), background var(--duration-fast) var(--ease-standard);
}

.custom-cursor__label {
  position: absolute;
  display: none;
  align-items: center;
  justify-content: center;
  min-width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--brand-navy-950);
  color: #fff;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.custom-cursor.is-active .custom-cursor__dot {
  width: 0;
  height: 0;
}

.custom-cursor.is-active .custom-cursor__label {
  display: flex;
}

@media (prefers-reduced-motion: reduce) {
  html.has-fine-pointer {
    cursor: auto;
  }
  .custom-cursor {
    display: none !important;
  }
}

/* ---------- 25. KAYDIRMADA BELİRME (data-reveal) ----------
   Not: JS (scripts/reveal.js) IntersectionObserver ile elemente
   "is-revealed" sınıfını ekler. JS hiç çalışmazsa (devre dışıysa)
   elemanlar görünür kalır — no-JS güvenliği .no-js-visible ile. */
[data-reveal] {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: no-preference) {
  html.js [data-reveal] {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 0.7s var(--ease-out-expo), transform 0.7s var(--ease-out-expo);
  }

  html.js [data-reveal].is-revealed {
    opacity: 1;
    transform: none;
  }
}