/* ==========================================================
   YMF 2026 — style.css
   Akademik Tema · Yoğun Madde Fiziği İzmir Toplantısı
   ========================================================== */

/* ── CSS Custom Properties ───────────────────────────────── */
:root {
  --bg:          #ffffff;
  --bg-alt:      #f7f8fa;
  --navy:        #0d1b2e;
  --navy2:       #1a2e4a;
  --gold:        #f47920;
  --gold-dark:   #c75800;
  --gold-bg:     #fff4eb;
  --text:        #2c3a4a;
  --muted:       #637085;
  --border:      #d4dae4;
  --border-gold: rgba(244,121,32,0.45);
  --link:        #1a5fa8;
  --red:         #b83232;
  --shadow-sm:   0 1px 4px rgba(0,0,0,0.07);
  --radius:      4px;

  --academic-maroon: #8b1a1a;
  --black:           #111111;

  --font-serif: 'EB Garamond', Georgia, 'Times New Roman', serif;
  --font-sans:  'Outfit', system-ui, sans-serif;
}

/* ── Reset & Base ────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-weight: 300;
  line-height: 1.75;
  overflow-x: hidden;
}
a { color: var(--link); }
a:hover { text-decoration: underline; }
img { max-width: 100%; display: block; }

/* ── NAV ─────────────────────────────────────────────────── */
nav {
  position: relative; z-index: 200;
  display: flex; flex-direction: column;
  background: #fff;
  box-shadow: 0 2px 12px rgba(13,27,46,0.1);
  transition: transform 0.3s ease;
}
nav.nav-hidden {
  transform: translateY(-100%);
}

/* Row 1 — Logo */
.nav-top {
  display: grid; grid-template-columns: 1fr auto 1fr;
  align-items: center;
  height: 120px; position: relative;
  border-bottom: 1px solid var(--border);
}
.nav-logo {
  display: flex; align-items: center; justify-content: center;
  text-decoration: none;
  grid-column: 2;
}
.nav-logo-img {
  height: 108px; width: auto;
  max-width: calc(100% - 80px);
  object-fit: contain;
}
.nav-logo-text {
  font-family: var(--font-serif);
  font-size: 1.5rem; font-weight: 600;
  color: var(--navy); letter-spacing: 0.02em;
}

/* Row 2 — Links */
.nav-bottom {
  display: flex; justify-content: center; align-items: center;
  height: 44px; position: relative;
  background: var(--bg-alt);
  border-bottom: 2px solid var(--gold);
}
.nav-links { display: flex; gap: 1.4rem; list-style: none; flex-wrap: nowrap; }
.nav-links li { white-space: nowrap; }
.nav-links a {
  font-family: var(--font-sans);
  font-size: 0.73rem; font-weight: 500;
  letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--navy); text-decoration: none;
  padding-bottom: 2px;
  border-bottom: 2px solid transparent;
  transition: border-color 0.2s, color 0.2s;
}
.nav-links a:hover,
.nav-links a.aktif { border-bottom-color: var(--gold); color: var(--gold-dark); }

.hamburger {
  display: none; flex-direction: column; gap: 5px;
  cursor: pointer; background: none; border: none; padding: 8px;
  position: absolute; right: 1.2rem;
}
.hamburger span {
  display: block; width: 25px; height: 2.5px;
  background: var(--navy); border-radius: 2px;
  transition: all 0.25s;
}

/* ── MOBILE SIDEBAR ──────────────────────────────────────── */
#sidebar-overlay {
  display: none;
  position: fixed; inset: 0;
  background: rgba(13,27,46,0.5);
  z-index: 299;
  backdrop-filter: blur(2px);
}
#sidebar-overlay.open { display: block; }

#sidebar {
  position: fixed; top: 0; right: -300px; bottom: 0;
  width: 270px;
  background: #fff;
  z-index: 300;
  padding: 1.2rem 1.5rem 2rem;
  transition: right 0.3s ease;
  box-shadow: -4px 0 24px rgba(13,27,46,0.18);
  overflow-y: auto;
  display: flex; flex-direction: column;
}
#sidebar.open { right: 0; }

#sidebar-close {
  align-self: flex-end;
  background: none; border: none;
  font-size: 1.5rem; line-height: 1;
  cursor: pointer; color: var(--navy);
  padding: 4px 6px;
}
#sidebar ul {
  list-style: none; padding: 0; margin: 1.2rem 0 0;
  display: flex; flex-direction: column;
}
#sidebar ul li a {
  display: block;
  padding: 0.85rem 0.4rem;
  border-bottom: 1px solid var(--border);
  color: var(--navy); text-decoration: none;
  font-family: var(--font-sans);
  font-size: 0.9rem; font-weight: 500;
  letter-spacing: 0.07em; text-transform: uppercase;
  transition: color 0.15s;
}
#sidebar ul li a:hover { color: var(--gold-dark); }

/* ── HERO SLIDER ─────────────────────────────────────────── */
#hero {
  position: relative;
  width: 100%; height: 100vh; min-height: 520px;
  overflow: hidden;
  background: var(--navy);
  margin-top: 0; padding: 0;
}

#hero-track {
  position: absolute; inset: 0;
  display: flex; height: 100%;
  transition: transform 0.9s ease;
  will-change: transform;
}
.slide {
  flex: 0 0 100%; min-width: 100%; height: 100%;
}
.slide img {
  width: 100%; height: 100%;
  object-fit: cover; object-position: center 30%;
  display: block;
}

/* Gradient overlay — lighter at top, darker at bottom for text */
.slider-overlay {
  position: absolute; inset: 0; z-index: 1;
  background: linear-gradient(
    to bottom,
    rgba(13,27,46,0.30) 0%,
    rgba(13,27,46,0.55) 45%,
    rgba(13,27,46,0.80) 100%
  );
}

/* Text content centred on image */
.slider-content {
  position: absolute; inset: 0; z-index: 2;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  text-align: center;
  padding: 7rem 2rem 5rem;
  color: #fff;
}

.slider-badge {
  font-family: var(--font-sans);
  font-size: 0.75rem; letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.8);
  border: 1px solid rgba(255,255,255,0.4);
  padding: 0.3rem 1.1rem; border-radius: 2px;
  margin-bottom: 1.6rem;
  opacity: 0; animation: fadeUp 0.7s 0.3s forwards;
}

.slider-title {
  font-family: var(--font-serif);
  font-size: clamp(2.6rem, 6.5vw, 5rem);
  font-weight: 600; line-height: 1.1;
  color: #fff; max-width: 820px;
  opacity: 0; animation: fadeUp 0.8s 0.5s forwards;
}
.slider-title em {
  font-style: italic;
  color: var(--gold);
  display: block;
}

.slider-meta {
  margin-top: 1.6rem;
  display: flex; gap: 1.2rem; flex-wrap: wrap;
  justify-content: center; align-items: center;
  font-size: 1rem; color: rgba(255,255,255,0.88);
  opacity: 0; animation: fadeUp 0.8s 0.7s forwards;
}
.slider-meta .divider { color: rgba(255,255,255,0.4); }

.slider-cta {
  margin-top: 2.4rem;
  display: flex; gap: 1rem; flex-wrap: wrap;
  justify-content: center;
  opacity: 0; animation: fadeUp 0.8s 0.9s forwards;
}

.btn-primary {
  background: var(--gold); color: var(--navy);
  padding: 0.7rem 2rem; border-radius: var(--radius);
  text-decoration: none; font-weight: 600;
  font-size: 0.87rem; letter-spacing: 0.05em;
  transition: background 0.2s, transform 0.15s;
  border: 2px solid var(--gold);
}
.btn-primary:hover { background: var(--gold-dark); border-color: var(--gold-dark); transform: translateY(-1px); text-decoration: none; }

.btn-outline {
  background: transparent;
  border: 2px solid rgba(255,255,255,0.7);
  color: #fff;
  padding: 0.7rem 2rem; border-radius: var(--radius);
  text-decoration: none; font-weight: 400;
  font-size: 0.87rem; letter-spacing: 0.05em;
  transition: all 0.2s;
}
.btn-outline:hover { background: rgba(255,255,255,0.12); transform: translateY(-1px); text-decoration: none; }

/* Slider dots */
.slider-dots {
  position: absolute; bottom: 2rem; left: 50%;
  transform: translateX(-50%); z-index: 3;
  display: flex; gap: 8px;
}
.slider-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: rgba(255,255,255,0.4);
  border: none; cursor: pointer; padding: 0;
  transition: background 0.2s, transform 0.2s;
}
.slider-dot.active { background: var(--gold); transform: scale(1.25); }

/* Slider prev/next arrows */
.slider-arrow {
  position: absolute; top: 50%; z-index: 3;
  transform: translateY(-50%);
  background: rgba(255,255,255,0.15);
  border: 1px solid rgba(255,255,255,0.3);
  color: #fff; font-size: 1.2rem;
  width: 44px; height: 44px; border-radius: 50%;
  cursor: pointer; display: flex; align-items: center;
  justify-content: center; transition: background 0.2s;
}
.slider-arrow:hover { background: rgba(255,255,255,0.28); }
.slider-arrow.prev { left: 1.5rem; }
.slider-arrow.next { right: 1.5rem; }

/* ── SECTION BASE ────────────────────────────────────────── */
section { padding: 5rem 2rem; }
.section-inner { max-width: 1080px; margin: 0 auto; }

.section-tag {
  font-family: var(--font-sans);
  font-size: 0.7rem; letter-spacing: 0.22em;
  text-transform: uppercase; color: var(--gold-dark);
  font-weight: 500; margin-bottom: 0.4rem;
}
.section-title {
  font-family: var(--font-serif);
  font-size: clamp(1.9rem, 3.5vw, 2.7rem);
  font-weight: 600; color: var(--navy); line-height: 1.2;
}
.section-rule {
  width: 40px; height: 2px;
  background: var(--gold); margin: 1rem 0 2.2rem;
}
.section-body {
  color: var(--muted); font-size: 0.97rem;
  max-width: 680px; line-height: 1.85;
}

/* ── DUYURU ──────────────────────────────────────────────── */
#duyuru { background: var(--bg); }

.duyuru-text { max-width: 760px; }
.duyuru-text p {
  font-size: 0.97rem; line-height: 1.9;
  color: var(--text); margin-bottom: 1.1rem;
}
.duyuru-text p:last-child { margin-bottom: 0; }

.deadline-box {
  display: inline-flex; align-items: center; gap: 0.8rem;
  margin-top: 2rem;
  background: var(--gold-bg);
  border: 1px solid var(--gold);
  border-left: 4px solid var(--gold-dark);
  padding: 0.85rem 1.5rem;
  border-radius: 0 var(--radius) var(--radius) 0;
  font-size: 0.95rem; color: var(--text);
}
.deadline-box .dl-label {
  font-weight: 500; color: var(--navy);
}
.deadline-box .dl-date {
  font-family: var(--font-serif);
  font-size: 1.1rem; color: var(--gold-dark);
  font-weight: 600;
}

/* ── BİLDİRİ FORMATI ─────────────────────────────────────── */
#bildiri { background: var(--bg-alt); }

.bildiri-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
  margin-top: 0.5rem;
}
.bildiri-block {}
.bildiri-subtitle {
  font-family: var(--font-serif);
  font-size: 1.25rem; font-weight: 600;
  color: var(--navy); margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}
.bildiri-list {
  list-style: none; display: flex; flex-direction: column; gap: 0.7rem;
}
.bildiri-list li {
  font-size: 0.92rem; color: var(--text);
  line-height: 1.7;
  padding-left: 1.4rem;
  position: relative;
}
.bildiri-list li::before {
  content: '—';
  position: absolute; left: 0;
  color: var(--gold-dark); font-weight: 500;
}

.download-btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  margin-top: 1.6rem;
  background: var(--navy); color: #fff;
  padding: 0.65rem 1.6rem; border-radius: var(--radius);
  text-decoration: none; font-size: 0.87rem;
  font-weight: 500; letter-spacing: 0.04em;
  transition: background 0.2s;
}
.download-btn:hover { background: var(--navy2); text-decoration: none; color: #fff; }
.download-btn svg { flex-shrink: 0; }

/* ── KONUŞMACILAR ────────────────────────────────────────── */
#konusmaci { background: var(--bg); }

.speakers-note {
  display: inline-block;
  background: #eef4fc;
  border: 1px solid #b8d0ed;
  color: #1a5fa8;
  padding: 0.55rem 1.2rem; border-radius: var(--radius);
  font-size: 0.83rem; margin-bottom: 2.2rem;
}

.speakers-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
  gap: 1.2rem;
}
.speaker-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.4rem;
  text-align: center;
  transition: border-color 0.2s;
}
.speaker-card:hover { border-color: var(--gold); }

.speaker-card-link {
  text-decoration: none;
  display: block;
}
.speaker-card-link .speaker-card {
  cursor: pointer;
  position: relative;
}
.speaker-card-link .speaker-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(13,27,46,0.15);
}

.speaker-pdf-badge {
  display: inline-block;
  background: var(--gold);
  color: #fff;
  font-size: 0.65rem;
  font-weight: 600;
  padding: 2px 6px;
  border-radius: 3px;
  margin-top: 0.5rem;
  letter-spacing: 0.05em;
}

.speaker-avatar {
  width: 102px; height: 102px; border-radius: 50%;
  background: linear-gradient(135deg, var(--navy2), var(--gold));
  margin: 0 auto 0.9rem;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-serif); font-size: 2rem; color: #fff;
  overflow: hidden;
}
.speaker-avatar img { width: 100%; height: 100%; object-fit: cover; }
.speaker-name {
  font-family: var(--font-serif);
  font-size: 1.05rem; color: var(--navy);
  font-weight: 600; margin-bottom: 0.2rem;
}
.speaker-aff { font-size: 0.78rem; color: var(--muted); }
.speaker-tba { font-size: 0.78rem; color: var(--muted); margin-top: 0.4rem; font-style: italic; }

/* ── PROGRAM ─────────────────────────────────────────────── */
#program { background: var(--bg-alt); }

.program-timeline {
  border: 1px solid var(--border); border-radius: var(--radius);
  overflow: hidden;
}
.prog-row {
  display: grid; grid-template-columns: 130px 1fr;
  gap: 1.4rem; padding: 1.1rem 1.6rem;
  border-bottom: 1px solid var(--border);
  align-items: start; background: var(--bg);
  transition: background 0.15s;
}
.prog-row:last-child { border-bottom: none; }
.prog-row:hover { background: #f5f7fa; }
.prog-row.break-row { background: var(--bg-alt); }
.prog-row.break-row:hover { background: #eef0f4; }

.prog-time {
  font-size: 0.82rem; color: var(--gold-dark);
  font-weight: 500; padding-top: 0.1rem; white-space: nowrap;
}
.prog-event-title {
  font-family: var(--font-serif);
  font-size: 1.05rem; color: var(--navy); font-weight: 600;
}
.prog-event-detail { font-size: 0.82rem; color: var(--muted); margin-top: 0.15rem; }
.prog-type {
  display: inline-block; font-size: 0.67rem; font-weight: 500;
  letter-spacing: 0.09em; text-transform: uppercase;
  padding: 0.18rem 0.6rem; border-radius: 2px; margin-right: 0.4rem; margin-bottom: 0.25rem;
}
.prog-type.davet  { background: var(--gold-bg); color: var(--gold-dark); border: 1px solid rgba(244,121,32,0.35); }
.prog-type.sozlu  { background: #eef4fc; color: #1a5fa8;          border: 1px solid #b8d0ed; }
.prog-type.break  { background: var(--bg-alt); color: var(--muted); border: 1px solid var(--border); }
.prog-type.poster { background: #edfbf4; color: #1a7a4e;           border: 1px solid #9ad5b8; }
.prog-type.kapanis{ background: var(--gold-bg); color: var(--gold-dark); border: 1px solid rgba(244,121,32,0.35); }

.prog-note {
  background: #eef4fc; border-left: 3px solid #1a5fa8;
  padding: 0.85rem 1.3rem; border-radius: 0 var(--radius) var(--radius) 0;
  color: var(--muted); font-size: 0.84rem; margin-top: 1.4rem;
}

/* ── KAYIT ───────────────────────────────────────────────── */
#kayit { background: var(--bg); }

.kayit-free-badge {
  display: inline-flex; align-items: center; gap: 0.5rem;
  background: #edfbf4; border: 1px solid #9ad5b8;
  color: #1a7a4e; padding: 0.45rem 1.1rem;
  border-radius: var(--radius); font-size: 0.87rem;
  font-weight: 500; margin-bottom: 1.8rem;
}
.kayit-form-wrapper {
  background: var(--bg);
  border: 1px solid var(--border); border-radius: var(--radius);
  overflow: hidden; margin-top: 1.5rem;
}
.kayit-form-header {
  padding: 1.2rem 1.8rem; border-bottom: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 1rem;
  background: var(--bg-alt);
}
.kayit-form-title {
  font-family: var(--font-serif);
  font-size: 1.25rem; color: var(--navy); font-weight: 600;
}
.kayit-form-body { padding: 1.8rem; }
.kayit-iframe-container { width: 100%; }
.kayit-iframe-container iframe { width: 100%; height: 850px; border: none; display: block; }
.kayit-fallback {
  text-align: center; padding: 1.2rem 0 0;
  font-size: 0.83rem; color: var(--muted);
}
.kayit-fallback a { color: var(--link); font-weight: 500; }

/* ── GEÇMİŞ YMF ──────────────────────────────────────────── */
#gecmis { background: var(--bg-alt); }

.gecmis-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 0.8rem; margin-top: 2.2rem;
}
.gecmis-card {
  background: var(--bg); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 1.2rem 0.8rem;
  text-decoration: none;
  display: flex; flex-direction: column; align-items: center; gap: 0.3rem;
  text-align: center; transition: all 0.2s;
}
.gecmis-card:hover {
  border-color: var(--gold); background: var(--gold-bg);
  transform: translateY(-2px); text-decoration: none;
}
.gecmis-year {
  font-family: var(--font-serif);
  font-size: 1.7rem; color: var(--navy); font-weight: 600;
}
.gecmis-host { font-size: 0.75rem; color: var(--muted); }
.gecmis-arrow { font-size: 0.8rem; color: var(--gold); opacity: 0; transition: opacity 0.2s; }
.gecmis-card:hover .gecmis-arrow { opacity: 1; }

/* Gallery */
.gallery-section { margin-top: 3.5rem; }
.gallery-heading {
  font-family: var(--font-serif);
  font-size: 1.55rem; color: var(--navy); font-weight: 600;
  margin-bottom: 0.3rem;
}
.gallery-sub {
  font-size: 0.87rem; color: var(--muted); margin-bottom: 1.5rem;
}
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 0.8rem;
}
.gallery-item {
  border-radius: var(--radius); overflow: hidden;
  cursor: pointer; aspect-ratio: 4/3;
  background: var(--bg-alt); border: 1px solid var(--border);
  position: relative; transition: transform 0.2s;
}
.gallery-item:hover { transform: scale(1.02); }
.gallery-item img { width: 100%; height: 100%; object-fit: cover; display: block; }
.gallery-item .gallery-placeholder {
  width: 100%; height: 100%;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center; gap: 0.5rem;
  background: linear-gradient(135deg, #e8ecf2, #f4f6f9);
  color: var(--muted); font-size: 0.8rem; text-align: center; padding: 1rem;
}
.gallery-overlay {
  position: absolute; inset: 0;
  background: rgba(13,27,46,0); display: flex;
  align-items: center; justify-content: center;
  transition: background 0.2s;
}
.gallery-overlay span { color: #fff; font-size: 1.4rem; opacity: 0; transition: opacity 0.2s; }
.gallery-item:hover .gallery-overlay { background: rgba(13,27,46,0.3); }
.gallery-item:hover .gallery-overlay span { opacity: 1; }
.gallery-more-link {
  display: inline-flex; align-items: center; gap: 0.4rem;
  margin-top: 1.2rem; font-size: 0.88rem; color: var(--link);
  font-weight: 500; text-decoration: none;
}
.gallery-more-link:hover { text-decoration: underline; }

/* Photo Carousel */
.photo-carousel {
  position: relative;
  width: 100%;
  overflow: hidden;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg-alt);
}
.photo-track {
  display: flex;
  width: 100%;
  transition: transform 0.5s ease;
  will-change: transform;
}
.photo-slide {
  flex: 0 0 100%;
  min-width: 100%;
  cursor: pointer;
}
.photo-slide img {
  width: 100%;
  height: 420px;
  object-fit: cover;
  object-position: center;
  display: block;
}
.photo-arrow {
  position: absolute; top: 50%; z-index: 3;
  transform: translateY(-50%);
  background: rgba(255,255,255,0.85);
  border: 1px solid var(--border);
  color: var(--navy); font-size: 1.5rem;
  width: 42px; height: 42px; border-radius: 50%;
  cursor: pointer; display: flex; align-items: center;
  justify-content: center; transition: background 0.2s;
  line-height: 1;
}
.photo-arrow:hover { background: #fff; }
.photo-prev { left: 1rem; }
.photo-next { right: 1rem; }
.photo-dots {
  position: absolute; bottom: 0.8rem; left: 50%;
  transform: translateX(-50%);
  display: flex; gap: 6px; z-index: 3;
}
.photo-dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: rgba(255,255,255,0.5);
  border: none; cursor: pointer; padding: 0;
  transition: background 0.2s, transform 0.2s;
}
.photo-dot.active { background: #fff; transform: scale(1.3); }

/* Lightbox */
.lightbox {
  display: none; position: fixed; inset: 0; z-index: 1000;
  background: rgba(5,12,24,0.93);
  align-items: center; justify-content: center; padding: 2rem;
}
.lightbox.open { display: flex; }
.lightbox img {
  max-width: 90vw; max-height: 86vh;
  border-radius: 2px; box-shadow: 0 20px 60px rgba(0,0,0,0.6);
}
.lightbox-close {
  position: absolute; top: 1.2rem; right: 1.8rem;
  color: #fff; font-size: 1.8rem; cursor: pointer;
  background: none; border: none; opacity: 0.7; transition: opacity 0.2s; line-height: 1;
}
.lightbox-close:hover { opacity: 1; }

/* ── KURUL ───────────────────────────────────────────────── */
#kurul { background: var(--bg); }

.kurul-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 2rem;
}
.kurul-block {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.6rem 1.8rem;
  background: var(--bg-alt);
}
.kurul-subtitle {
  font-family: var(--font-serif);
  font-size: 1.2rem; font-weight: 600;
  color: var(--navy);
  margin-bottom: 1.1rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--gold);
}
.kurul-tba {
  font-size: 0.88rem; color: var(--muted); font-style: italic;
}
.kurul-list {
  list-style: none; display: flex; flex-direction: column; gap: 0.9rem;
}
.kurul-list li {
  display: flex; flex-direction: column; gap: 0.1rem;
  padding-left: 1rem; position: relative;
}
.kurul-list li::before {
  content: '•'; position: absolute; left: 0;
  color: var(--gold); font-size: 1rem; line-height: 1.5;
}
.kurul-name {
  font-size: 0.92rem; color: var(--text); font-weight: 500; line-height: 1.4;
}
.kurul-aff {
  font-size: 0.78rem; color: var(--muted);
}

/* ── İLETİŞİM ────────────────────────────────────────────── */
#iletisim { background: var(--bg-alt); }

.contact-grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 4rem; margin-top: 2.5rem;
}
.contact-block { display: flex; flex-direction: column; gap: 1.6rem; }
.contact-item { display: flex; gap: 1rem; align-items: flex-start; }
.contact-dot {
  font-size: 1.4rem; color: var(--gold); flex-shrink: 0;
  margin-top: 0.1rem; line-height: 1;
}
.contact-label {
  font-size: 0.7rem; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--gold-dark);
  font-weight: 500; margin-bottom: 0.25rem;
}
.contact-val { font-size: 0.91rem; color: var(--text); line-height: 1.7; }
.contact-val a { color: var(--link); text-decoration: none; }
.contact-val a:hover { text-decoration: underline; }
.map-container {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-alt);
}

/* ── SPONSORLAR ──────────────────────────────────────────── */
#sponsorlar { background: var(--bg-alt); }

.sponsor-ieu-block {
  display: flex; align-items: center; gap: 1.4rem;
  background: var(--bg); border: 1px solid var(--border-gold);
  border-radius: var(--radius); padding: 1.5rem 1.8rem;
  margin-bottom: 2.5rem; max-width: 480px;
}
.sponsor-ieu-logo { height: 58px; width: auto; flex-shrink: 0; }
.sponsor-ieu-label {
  font-size: 0.7rem; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--gold-dark); margin-bottom: 0.3rem;
}
.sponsor-ieu-name {
  font-family: var(--font-serif); font-size: 1.1rem;
  color: var(--navy); font-weight: 600; line-height: 1.3;
}

.sponsor-grid {
  display: flex; flex-wrap: wrap;
  gap: 1.2rem; align-items: center;
  margin-top: 1rem;
}
.sponsor-logo-card {
  background: var(--bg); border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.2rem 1.6rem;
  display: flex; align-items: center; justify-content: center;
  transition: border-color 0.2s, transform 0.2s;
  min-width: 140px;
}
.sponsor-logo-card:hover { border-color: var(--gold); transform: translateY(-2px); }
.sponsor-logo-card img { max-height: 56px; max-width: 140px; object-fit: contain; }
.sponsor-logo-card-placeholder {
  width: 130px; height: 52px;
  background: linear-gradient(135deg, #eaedf2, #f4f6f9);
  border: 1px dashed var(--border); border-radius: 2px;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.73rem; color: var(--muted);
}

/* IYTE-AVILAR text link sponsor */
.sponsor-text-link {
  background: var(--bg); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 1.2rem 1.6rem;
  display: flex; align-items: center; justify-content: center;
  min-width: 140px; transition: border-color 0.2s;
}
.sponsor-text-link a {
  font-family: var(--font-serif); font-size: 1.1rem;
  font-weight: 600; color: var(--navy);
  text-decoration: none; letter-spacing: 0.02em;
  line-height: 1.2; text-align: center;
}
.sponsor-text-link:hover { border-color: var(--gold); }
.sponsor-text-link a:hover { color: var(--gold-dark); text-decoration: none; }

.sponsor-cta {
  margin-top: 1.8rem; font-size: 0.87rem; color: var(--muted);
}
.sponsor-cta a { color: var(--link); }

/* ── FOOTER ──────────────────────────────────────────────── */
footer {
  position: relative;
  background: url('assets/images/nanotube.jpg') center/cover no-repeat;
  padding: 3rem 2rem; text-align: center;
}
footer::before {
  content: '';
  position: absolute; inset: 0;
  background: rgba(13,27,46,0.82);
}
.footer-inner { position: relative; z-index: 1; max-width: 1080px; margin: 0 auto; }
.footer-logo {
  font-family: var(--font-serif); font-size: 1.6rem;
  font-weight: 600; color: var(--gold); margin-bottom: 0.4rem;
}
.footer-host { font-size: 0.8rem; color: rgba(255,255,255,0.45); margin-bottom: 1.8rem; }
.footer-links {
  display: flex; gap: 1.8rem; justify-content: center;
  flex-wrap: wrap; margin-bottom: 1.8rem;
}
.footer-links a {
  font-size: 0.77rem; color: rgba(255,255,255,0.4);
  text-decoration: none; letter-spacing: 0.06em; text-transform: uppercase;
  transition: color 0.2s;
}
.footer-links a:hover { color: var(--gold); }
.footer-copy { font-size: 0.73rem; color: rgba(255,255,255,0.22); }

/* ── ANIMATIONS ──────────────────────────────────────────── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(22px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── RESPONSIVE ──────────────────────────────────────────── */
@media (max-width: 900px) {
  .nav-links { gap: 1.2rem; }
  .nav-links a { font-size: 0.72rem; }
}

@media (max-width: 768px) {
  nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
  }
  .nav-top { height: 76px; }
  .nav-logo-img { height: 60px; }
  .nav-logo-text { font-size: 1rem; }
  .nav-bottom { height: 0; overflow: hidden; border: none; }
  .hamburger { display: flex; }

  #hero { margin-top: 76px; }

  section { padding: 3.5rem 1.3rem; }

  .bildiri-grid  { grid-template-columns: 1fr; gap: 2rem; }
  .contact-grid  { grid-template-columns: 1fr; gap: 2rem; }

  .slider-arrow { display: none; }

  #hero { height: 90vh; }
  .slider-title { font-size: clamp(2rem, 7vw, 3rem); }

  .prog-row { grid-template-columns: 1fr; gap: 0.3rem; padding: 1rem 1.1rem; }
  .prog-time { font-size: 0.78rem; }

  .gecmis-grid { grid-template-columns: repeat(auto-fill, minmax(100px, 1fr)); }
  .gallery-grid { grid-template-columns: 1fr 1fr; }

  .sponsor-ieu-block { flex-direction: column; text-align: center; max-width: 100%; }
}

@media (max-width: 480px) {
  .gallery-grid { grid-template-columns: 1fr; }
}