/* ===================================================
   OP. DR. MUHAMMET FURKAN DARILMAZ
   ORTOPEDİ VE TRAVMATOLOJİ UZMANI — TANITIM SİTESİ
   =================================================== */

:root {
  /* Renk paleti */
  --color-cream: #f8f4ec;
  --color-sand: #efe6d3;
  --color-sand-dark: #e4d7bd;
  --color-green-950: #0f1f18;
  --color-green-900: #1c3329;
  --color-green-800: #24402f;
  --color-green-700: #33513f;
  --color-green-500: #5c7d6a;
  --color-green-100: #e7ede8;
  --color-copper: #b5652f;
  --color-copper-light: #d98a52;
  --color-text: #26302a;
  --color-text-muted: #5f6a63;
  --color-border: #e2d8c2;

  --font-heading: "Fraunces", Georgia, serif;
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 26px;

  --shadow-sm: 0 2px 10px rgba(15, 31, 24, 0.06);
  --shadow-md: 0 10px 28px rgba(15, 31, 24, 0.1);
  --shadow-lg: 0 24px 56px rgba(15, 31, 24, 0.16);

  --container-width: 1200px;
  --header-height: 88px;
}

/* ---------- Reset ---------- */
* , *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-cream);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; margin: 0; padding: 0; }
button { font-family: inherit; cursor: pointer; }
h1, h2, h3, h4 { font-family: var(--font-heading); font-optical-sizing: auto; color: var(--color-green-900); margin: 0 0 0.5em; line-height: 1.18; letter-spacing: -0.01em; }
p { margin: 0 0 1em; color: var(--color-text-muted); }

.icon-sprite { position: absolute; width: 0; height: 0; overflow: hidden; }
.icon { display: block; flex-shrink: 0; }

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--color-green-900);
  color: var(--color-cream);
  padding: 12px 20px;
  z-index: 1000;
  border-radius: 0 0 var(--radius-sm) 0;
}
.skip-link:focus { left: 0; }

.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 28px;
}

section { scroll-margin-top: var(--header-height); }

.eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-copper);
  margin-bottom: 1rem;
}
.eyebrow::before {
  content: "";
  display: inline-block;
  width: 28px;
  height: 1px;
  background: var(--color-copper);
}
.section-heading { max-width: 640px; margin: 0 auto 3.5rem; text-align: center; }
.section-heading .eyebrow { justify-content: center; }
.section-heading .eyebrow::before { display: none; }
.section-heading h2 { font-size: clamp(1.9rem, 3.2vw, 2.6rem); }
.section-subtitle { font-size: 1.05rem; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 15px 30px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.94rem;
  border: 1.5px solid transparent;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
  white-space: nowrap;
}
.btn-primary {
  background: var(--color-green-900);
  color: var(--color-cream);
  box-shadow: var(--shadow-sm);
}
.btn-primary:hover { background: var(--color-copper); transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn-outline {
  background: transparent;
  border-color: var(--color-green-900);
  color: var(--color-green-900);
}
.btn-outline:hover { background: var(--color-green-900); border-color: var(--color-green-900); color: var(--color-cream); transform: translateY(-2px); }
.btn-sm { padding: 11px 22px; font-size: 0.86rem; }
.btn-block { width: 100%; }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 500;
  background: rgba(248, 244, 236, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: box-shadow 0.3s ease, border-color 0.3s ease, background 0.3s ease;
}
.site-header.scrolled {
  box-shadow: var(--shadow-sm);
  border-color: var(--color-border);
  background: rgba(248, 244, 236, 0.98);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
  gap: 24px;
}
.brand { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.brand-logo { border-radius: 50%; }
.brand-text { display: flex; flex-direction: column; line-height: 1.25; }
.brand-text strong { font-family: var(--font-heading); font-weight: 600; color: var(--color-green-900); font-size: 1.02rem; }
.brand-text small { color: var(--color-text-muted); font-size: 0.72rem; letter-spacing: 0.04em; }

.main-nav ul { display: flex; gap: 1.5rem; }
.nav-link {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text);
  position: relative;
  padding: 6px 0;
  white-space: nowrap;
  transition: color 0.2s ease;
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -2px;
  height: 2px;
  background: var(--color-copper);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s ease;
}
.nav-link:hover, .nav-link.active { color: var(--color-green-900); }
.nav-link:hover::after, .nav-link.active::after { transform: scaleX(1); }

.header-actions { display: flex; align-items: center; gap: 1.25rem; flex-shrink: 0; }
.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  background: transparent;
  border: none;
  padding: 0;
}
.menu-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-green-900);
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}
.menu-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-toggle.open span:nth-child(2) { opacity: 0; }
.menu-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
  padding: 5.5rem 0 6.5rem;
  position: relative;
  overflow: hidden;
  background: linear-gradient(180deg, var(--color-cream) 0%, var(--color-sand) 100%);
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(28, 51, 41, 0.09) 1px, transparent 1px);
  background-size: 22px 22px;
  mask-image: radial-gradient(circle at 82% 20%, black, transparent 60%);
  pointer-events: none;
}
.hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 4rem;
  align-items: center;
}
.hero-kicker {
  font-family: var(--font-heading);
  font-style: italic;
  font-size: 1.05rem;
  color: var(--color-green-700);
  margin-bottom: 0.75rem;
}
.hero h1 {
  font-size: clamp(2.4rem, 4.6vw, 3.8rem);
  font-weight: 600;
  margin-bottom: 0.3em;
}
.hero h1 span { color: var(--color-copper); font-style: italic; font-weight: 500; }
.hero-role {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-green-900);
  letter-spacing: 0.02em;
  margin-bottom: 1.25rem;
}
.hero-text { font-size: 1.08rem; max-width: 520px; }
.hero-actions { display: flex; gap: 1rem; margin: 2rem 0 2.75rem; flex-wrap: wrap; }
.hero-media { position: relative; justify-self: center; max-width: 400px; width: 100%; }
.hero-media img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 100%;
}
.hero-badge {
  position: absolute;
  bottom: -1.5rem;
  left: -1.75rem;
  background: var(--color-cream);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  padding: 14px 18px;
  display: flex;
  align-items: center;
  gap: 12px;
  max-width: 250px;
  border: 1px solid var(--color-border);
}
.hero-badge-icon {
  width: 36px; height: 36px;
  border-radius: 50%;
  background: var(--color-green-900);
  color: var(--color-cream);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.hero-badge strong { display: block; font-size: 0.84rem; color: var(--color-green-900); font-family: var(--font-heading); }
.hero-badge small { font-size: 0.72rem; color: var(--color-text-muted); }

/* ---------- About ---------- */
.about { padding: 7rem 0; }
.about-inner {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 4.5rem;
  align-items: center;
}
.section-media img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  width: 100%;
}
.about h2 { font-size: clamp(1.8rem, 3vw, 2.3rem); }
.fact-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
  margin-top: 2rem;
}
.fact-list li {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  background: var(--color-cream);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 16px 18px;
}
.fact-icon { color: var(--color-copper); flex-shrink: 0; margin-top: 2px; }
.fact-list strong { display: block; font-size: 0.88rem; color: var(--color-green-900); }
.fact-list span { font-size: 0.82rem; color: var(--color-text-muted); }

/* ---------- Specialties ---------- */
.specialties { padding: 7rem 0; background: var(--color-sand); }
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
}
.card {
  background: var(--color-cream);
  border-radius: var(--radius-lg);
  padding: 2.25rem 1.85rem;
  box-shadow: var(--shadow-sm);
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
  border: 1px solid var(--color-border);
}
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: var(--color-copper); }
.card-icon {
  width: 58px; height: 58px;
  border-radius: 16px;
  background: var(--color-green-100);
  color: var(--color-green-900);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 1.5rem;
  transition: background 0.25s ease, color 0.25s ease;
}
.card:hover .card-icon { background: var(--color-green-900); color: var(--color-cream); }
.card h3 { font-size: 1.18rem; }
.card p { font-size: 0.92rem; margin: 0; }

/* ---------- Services ---------- */
.services { padding: 7rem 0; }
.service-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem 2.75rem;
}
.service-item {
  display: flex;
  gap: 1.4rem;
  align-items: flex-start;
  padding: 1.6rem 0;
  border-bottom: 1px solid var(--color-border);
}
.service-icon {
  width: 46px; height: 46px;
  border-radius: 12px;
  background: var(--color-green-100);
  color: var(--color-copper);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.service-item h3 { font-size: 1.12rem; margin-bottom: 0.35em; }
.service-item p { font-size: 0.92rem; margin: 0; }

/* ---------- Experience / Timeline ---------- */
.experience { padding: 7rem 0; background: var(--color-green-900); color: var(--color-cream); }
.experience .eyebrow { color: var(--color-copper-light); }
.experience h2 { color: var(--color-cream); }

.timeline {
  position: relative;
  max-width: 760px;
  margin: 0 auto;
  padding-left: 2rem;
  border-left: 2px solid rgba(248,244,236,0.18);
}
.timeline-item { position: relative; padding-bottom: 2.5rem; padding-left: 1.5rem; }
.timeline-item:last-child { padding-bottom: 0; }
.timeline-item::before {
  content: "";
  position: absolute;
  left: -2.45rem;
  top: 4px;
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--color-copper-light);
  border: 3px solid var(--color-green-900);
  box-shadow: 0 0 0 2px rgba(248,244,236,0.18);
}
.timeline-year {
  font-family: var(--font-heading);
  font-style: italic;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-copper-light);
  margin-bottom: 0.4rem;
}
.timeline-content h4 { color: var(--color-cream); font-size: 1.18rem; margin: 0 0 0.5em; font-weight: 600; }
.timeline-content p { color: rgba(248,244,236,0.72); margin: 0; font-size: 0.92rem; }

/* ---------- Academic sub-sections ---------- */
.academic-block { margin-top: 4.5rem; }
.academic-block:first-of-type { margin-top: 0; }
.academic-block + .academic-block {
  margin-top: 4rem;
  padding-top: 4rem;
  border-top: 1px solid rgba(248, 244, 236, 0.12);
}
.academic-block-heading { text-align: center; max-width: 640px; margin: 0 auto 2.5rem; }
.academic-block-heading .eyebrow { justify-content: center; }
.academic-block-heading .eyebrow::before { display: none; }
.academic-block-heading h3 { color: var(--color-cream); font-size: clamp(1.35rem, 2.2vw, 1.7rem); }

.academic-note {
  margin-top: 1.75rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
  font-size: 0.92rem;
  color: var(--color-text-muted);
}

.academic-empty-note { color: rgba(248, 244, 236, 0.75); text-align: center; margin-bottom: 1.25rem; }
.research-tags { display: flex; flex-wrap: wrap; justify-content: center; gap: 0.75rem; }
.research-tag {
  max-width: 100%;
  border: 1px solid rgba(248, 244, 236, 0.25);
  border-radius: 999px;
  padding: 8px 18px;
  font-size: 0.85rem;
  font-weight: 600;
  color: rgba(248, 244, 236, 0.9);
}

/* ---------- Empty state ---------- */
.empty-state {
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-md);
  padding: 2rem;
  text-align: center;
  color: var(--color-text-muted);
  font-size: 0.92rem;
  max-width: 640px;
  margin: 0 auto;
}
.empty-state a { color: var(--color-copper); font-weight: 600; }
.empty-state a:hover { text-decoration: underline; }
.experience .empty-state { border-color: rgba(248, 244, 236, 0.25); color: rgba(248, 244, 236, 0.75); }
.experience .empty-state a { color: var(--color-copper-light); }

/* ---------- Publication cards (featured) ---------- */
.publication-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 1.5rem; }
.publication-card {
  background: var(--color-cream);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  box-shadow: var(--shadow-sm);
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.publication-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--color-copper); }
.publication-category { font-size: 0.72rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: var(--color-copper); }
.publication-card h4 { font-size: 1.05rem; margin: 0; }
.publication-summary { font-size: 0.88rem; margin: 0; color: var(--color-text-muted); }
.publication-meta { font-size: 0.78rem; color: var(--color-text-muted); display: flex; gap: 0.5rem; flex-wrap: wrap; }
.publication-link { margin-top: auto; display: inline-flex; align-items: center; gap: 6px; font-size: 0.85rem; font-weight: 600; color: var(--color-green-900); }
.publication-link:hover { color: var(--color-copper); }

.experience .publication-card { background: rgba(248, 244, 236, 0.06); border-color: rgba(248, 244, 236, 0.18); }
.experience .publication-category { color: var(--color-copper-light); }
.experience .publication-card h4 { color: var(--color-cream); }
.experience .publication-summary,
.experience .publication-meta { color: rgba(248, 244, 236, 0.72); }
.experience .publication-link { color: var(--color-cream); }
.experience .publication-link:hover { color: var(--color-copper-light); }
.experience .publication-card:hover { border-color: var(--color-copper-light); }

/* ---------- Publication list rows (all publications) ---------- */
.publication-row { padding: 1.5rem 0; border-bottom: 1px solid rgba(248, 244, 236, 0.12); display: flex; flex-direction: column; gap: 0.4rem; }
.publication-row:last-child { border-bottom: none; }
.publication-row-title { font-family: var(--font-heading); font-size: 1.05rem; color: var(--color-cream); margin: 0; }
.publication-row-original { font-size: 0.82rem; font-style: italic; color: rgba(248, 244, 236, 0.6); }
.publication-row-meta { font-size: 0.8rem; color: rgba(248, 244, 236, 0.65); display: flex; flex-wrap: wrap; gap: 0.5rem; }
.publication-row-authors { font-size: 0.8rem; color: rgba(248, 244, 236, 0.55); }
.publication-row-links { display: flex; gap: 1.25rem; margin-top: 0.25rem; flex-wrap: wrap; }
.publication-row-links a { font-size: 0.82rem; font-weight: 600; color: var(--color-copper-light); display: inline-flex; align-items: center; gap: 4px; }
.publication-row-links a:hover { color: var(--color-cream); }
.publication-empty { color: rgba(248, 244, 236, 0.7); font-size: 0.9rem; text-align: center; padding: 1.5rem 0; }

/* ---------- Publication filters ---------- */
.pub-filters { display: flex; flex-wrap: wrap; gap: 0.6rem; margin-bottom: 2rem; }
.pub-filter {
  max-width: 100%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  border: 1px solid rgba(248, 244, 236, 0.25);
  background: transparent;
  color: rgba(248, 244, 236, 0.85);
  border-radius: 999px;
  padding: 8px 16px;
  font-size: 0.82rem;
  font-weight: 600;
  text-align: center;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}
.pub-filter:hover { border-color: var(--color-copper-light); color: var(--color-cream); }
.pub-filter[aria-pressed="true"] { background: var(--color-copper); border-color: var(--color-copper); color: var(--color-cream); }
.pub-filter:focus-visible { outline: 2px solid var(--color-copper-light); outline-offset: 2px; }
.pub-more { text-align: center; margin-top: 1rem; }

/* ---------- Academic profile links ---------- */
.profile-links { display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem; }
.profile-link {
  display: flex;
  align-items: center;
  gap: 14px;
  background: rgba(248, 244, 236, 0.06);
  border: 1px solid rgba(248, 244, 236, 0.18);
  border-radius: var(--radius-md);
  padding: 16px 18px;
  transition: border-color 0.2s ease, background 0.2s ease, transform 0.2s ease;
}
.profile-link:hover { border-color: var(--color-copper-light); background: rgba(248, 244, 236, 0.1); transform: translateY(-2px); }
.profile-link:focus-visible { outline: 2px solid var(--color-copper-light); outline-offset: 2px; }
.profile-link-icon {
  width: 44px; height: 44px;
  border-radius: 12px;
  background: rgba(248, 244, 236, 0.1);
  color: var(--color-copper-light);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.profile-link-text { display: flex; flex-direction: column; gap: 2px; flex: 1; min-width: 0; }
.profile-link-text strong { color: var(--color-cream); font-size: 0.92rem; font-family: var(--font-body); font-weight: 600; }
.profile-link-text small { color: rgba(248, 244, 236, 0.65); font-size: 0.78rem; }
.profile-link-external { color: rgba(248, 244, 236, 0.5); flex-shrink: 0; }

/* ---------- Hero academic links ---------- */
.hero-academic-links { display: flex; flex-wrap: wrap; gap: 0.75rem 1.5rem; margin-top: 1.75rem; }
.hero-academic-links a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--color-text-muted);
  border-bottom: 1px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}
.hero-academic-links a:hover { color: var(--color-copper); border-color: var(--color-copper); }
.hero-academic-links .icon { color: var(--color-copper); }

/* ---------- Science teaser (homepage) ---------- */
.science-teaser { padding: 6rem 0; }
.science-teaser-body { max-width: 900px; margin: 0 auto 2.5rem; }
.science-teaser-actions { text-align: center; }

/* ---------- FAQ ---------- */
.faq { padding: 7rem 0; }
.accordion { max-width: 780px; margin: 0 auto; }
.accordion-item { border-bottom: 1px solid var(--color-border); }
.accordion-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  background: transparent;
  border: none;
  padding: 1.6rem 0;
  text-align: left;
  font-family: var(--font-heading);
  font-weight: 500;
  font-size: 1.08rem;
  color: var(--color-green-900);
}
.accordion-icon {
  flex-shrink: 0;
  width: 32px; height: 32px;
  border-radius: 50%;
  background: var(--color-green-100);
  color: var(--color-green-900);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem;
  transition: transform 0.25s ease, background 0.25s ease, color 0.25s ease;
}
.accordion-trigger[aria-expanded="true"] .accordion-icon {
  transform: rotate(45deg);
  background: var(--color-copper);
  color: var(--color-cream);
}
.accordion-panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}
.accordion-panel p { padding-bottom: 1.6rem; margin: 0; font-size: 0.95rem; }

/* ---------- Contact ---------- */
.contact { padding: 7rem 0; background: var(--color-sand); }
.contact-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3.5rem;
  align-items: center;
}
.contact-inner-single {
  grid-template-columns: 1fr;
  justify-items: center;
  text-align: center;
  max-width: 560px;
}
.contact-inner-single .contact-list { align-items: center; }
.contact-inner-single .contact-list li { flex-direction: column; align-items: center; text-align: center; }
.contact h2 { font-size: clamp(1.8rem, 3vw, 2.3rem); }
.contact-list { margin-top: 2rem; display: flex; flex-direction: column; gap: 1.4rem; }
.contact-list li { display: flex; gap: 14px; align-items: flex-start; }
.contact-icon { color: var(--color-copper); margin-top: 2px; }
.contact-list strong { display: block; font-size: 0.9rem; color: var(--color-green-900); }
.contact-list span, .contact-list a { font-size: 0.92rem; }
.contact-list a:hover { color: var(--color-copper); text-decoration: underline; }

/* ---------- Footer ---------- */
.site-footer { background: var(--color-green-950); color: rgba(248,244,236,0.75); padding: 3rem 0 2rem; }
.footer-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 2rem;
  border-bottom: 1px solid rgba(248,244,236,0.12);
}
.footer-brand { display: flex; align-items: center; gap: 12px; }
.footer-brand strong { display: block; color: var(--color-cream); font-family: var(--font-heading); font-weight: 600; }
.footer-brand small { font-size: 0.78rem; }
.footer-nav { display: flex; flex-wrap: wrap; gap: 0.5rem 1.5rem; }
.footer-nav a { display: inline-flex; align-items: center; padding: 8px 2px; }
.footer-nav a:hover { color: var(--color-copper-light); }
.footer-meta { text-align: right; font-size: 0.82rem; }
.footer-meta p { color: rgba(248,244,236,0.6); margin: 0.2rem 0; }
.footer-disclaimer { font-size: 0.75rem; }

@media (max-width: 640px) {
  .footer-inner { flex-direction: column; text-align: center; }
  .footer-meta { text-align: center; }
}

/* ---------- Back to top ---------- */
.back-to-top {
  position: fixed;
  right: max(1.5rem, env(safe-area-inset-right, 0px) + 0.75rem);
  bottom: max(1.5rem, env(safe-area-inset-bottom, 0px) + 0.75rem);
  width: 46px; height: 46px;
  border-radius: 50%;
  border: none;
  background: var(--color-green-900);
  color: var(--color-cream);
  font-size: 1.2rem;
  box-shadow: var(--shadow-md);
  display: flex; align-items: center; justify-content: center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s ease, background 0.2s ease;
  z-index: 400;
}
.back-to-top.visible { opacity: 1; visibility: visible; transform: translateY(0); }
.back-to-top:hover { background: var(--color-copper); }

/* ---------- Scroll reveal ---------- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.is-visible { opacity: 1; transform: translateY(0); }

/* =====================================================
   RESPONSIVE
   ===================================================== */

/* Tablet */
@media (max-width: 1080px) {
  .hero { padding: 4.5rem 0 5rem; }
  .hero-inner { grid-template-columns: 1fr; text-align: center; }
  .hero-actions { justify-content: center; }
  .hero-text { margin: 0 auto; }
  .hero-media { order: -1; margin-bottom: 1rem; max-width: 340px; }
  .hero-badge { left: 50%; transform: translateX(-50%); bottom: -1rem; }
  .hero-academic-links { justify-content: center; }

  .about, .specialties, .services, .experience, .science-teaser, .faq, .contact {
    padding: 5rem 0;
  }

  .about-inner { grid-template-columns: 1fr; }
  .section-media { max-width: 340px; margin: 0 auto; }
  .card-grid { grid-template-columns: repeat(2, 1fr); }
  .card-grid-3 { grid-template-columns: repeat(3, 1fr); }

  .academic-block { margin-top: 3.5rem; }
  .academic-block + .academic-block { margin-top: 3.5rem; padding-top: 3.5rem; }

  .contact-inner { grid-template-columns: 1fr; }
}

/* Mobile nav + layout */
@media (max-width: 1080px) {
  .brand { flex-shrink: 1; min-width: 0; }
  .brand-text { min-width: 0; }

  .main-nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    max-height: calc(100vh - var(--header-height));
    background: var(--color-cream);
    border-bottom: 1px solid var(--color-border);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    transition: max-height 0.35s ease;
    box-shadow: var(--shadow-md);
  }
  .main-nav:not(.open) { max-height: 0; overflow: hidden; }
  .main-nav ul { flex-direction: column; gap: 0; padding: 1rem 28px 1.5rem; }
  .main-nav li { border-bottom: 1px solid var(--color-border); }
  .main-nav li:last-child { border-bottom: none; }
  .nav-link { display: block; padding: 14px 0; white-space: normal; }
  .nav-link::after { display: none; }

  .menu-toggle { display: flex; }
}

@media (max-width: 640px) {
  :root { --header-height: 76px; }
  .container { padding: 0 20px; }
  .main-nav ul { padding: 1rem 20px 1.5rem; }

  .brand { flex-shrink: 1; min-width: 0; }
  .brand-text { min-width: 0; }
  .brand-text strong { font-size: 0.96rem; }

  .hero { padding: 3rem 0 4rem; }
  .hero-media { order: 0; margin-bottom: 2.5rem; }
  .hero-actions { gap: 0.75rem; }
  .about, .specialties, .services, .experience, .science-teaser, .faq, .contact { padding: 4rem 0; }
  .card-grid { grid-template-columns: 1fr; }
  .service-list { grid-template-columns: 1fr; }
  .fact-list { grid-template-columns: 1fr; }
  .header-actions .btn-sm { display: none; }

  .timeline { padding-left: 1.25rem; }
  .timeline-item { padding-left: 1rem; }
  .timeline-item::before { left: -1.7rem; }

  .academic-block { margin-top: 3rem; }
  .academic-block + .academic-block { margin-top: 3rem; padding-top: 3rem; }
  .profile-links { grid-template-columns: 1fr; }
  .publication-grid { grid-template-columns: 1fr; }

  .back-to-top { width: 42px; height: 42px; font-size: 1.05rem; }

  /* Hakkında bölümündeki fotoğraf hero'dakiyle aynı; mobilde tekrarını gizle. */
  .about .section-media { display: none; }
}

@media (max-width: 380px) {
  .container { padding: 0 16px; }
}