/* ===========================
   CSS CUSTOM PROPERTIES
   =========================== */
:root {
  --bg-primary: #0b0d13;
  --bg-secondary: #0f1219;
  --bg-card: #12151c;
  --bg-card-hover: #171b26;
  --accent: #1d63ed;
  --accent-light: #3b82f6;
  --accent-glow: rgba(29, 99, 237, 0.12);
  --accent-border: rgba(29, 99, 237, 0.25);
  --text-primary: #f1f3f7;
  --text-secondary: #949db2;
  --text-muted: #5e687e;
  --border: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(29, 99, 237, 0.35);
  --nav-bg: rgba(11, 13, 19, 0.85);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.45);
  --shadow-glow: 0 4px 24px rgba(0, 0, 0, 0.4), 0 0 24px rgba(29, 99, 237, 0.08);
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-display: 'Playfair Display', Georgia, serif;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===========================
   RESET & BASE
   =========================== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

/* ===========================
   TYPOGRAPHY
   =========================== */
em { font-style: italic; color: #60a5fa; font-family: var(--font-display); }

/* ===========================
   LAYOUT
   =========================== */
.container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===========================
   NAVIGATION
   =========================== */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: var(--nav-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}

.nav.scrolled {
  background: rgba(10, 10, 15, 0.97);
  box-shadow: 0 2px 40px rgba(0,0,0,0.5);
}

.nav__container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.nav__logo {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--accent-light);
  letter-spacing: 0.05em;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav__link {
  padding: 6px 14px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.nav__link:hover,
.nav__link.active {
  color: var(--text-primary);
  background: rgba(255,255,255,0.05);
}

/* Language Switcher */
.nav__lang-item {
  display: flex;
  align-items: center;
}

.lang-switch {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  padding: 5px 12px;
  border-radius: 100px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  transition: var(--transition);
}

.lang-switch:hover {
  border-color: var(--accent-border);
  background: rgba(255, 255, 255, 0.07);
}

.lang-switch__btn {
  color: var(--text-muted);
  transition: var(--transition);
  text-decoration: none;
}

.lang-switch__btn:hover {
  color: var(--text-primary);
}

.lang-switch__btn--active {
  color: var(--accent-light);
  font-weight: 800;
}

.lang-switch__divider {
  color: var(--border);
  font-weight: 300;
  font-size: 0.75rem;
}

.nav__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav__hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: var(--transition);
}

/* ===========================
   BUTTONS
   =========================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 600;
  font-family: var(--font-body);
  transition: var(--transition);
  cursor: pointer;
  border: none;
  text-align: center;
  white-space: nowrap;
}

.btn--primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 4px 16px rgba(29, 99, 237, 0.3);
}
.btn--primary:hover {
  background: var(--accent-light);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(29, 99, 237, 0.45);
}

.btn--ghost {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border);
}
.btn--ghost:hover {
  border-color: var(--accent);
  color: var(--accent-light);
  background: var(--accent-glow);
}

.btn--outline {
  background: transparent;
  color: var(--accent-light);
  border: 1px solid var(--accent-border);
  padding: 8px 18px;
}
.btn--outline:hover {
  background: var(--accent-glow);
  border-color: var(--accent);
}

.btn--sm { padding: 8px 18px; font-size: 0.82rem; }
.btn--lg { padding: 16px 36px; font-size: 1rem; }

/* ===========================
   HERO
   =========================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 100px 24px 60px;
  overflow: hidden;
}

.hero__bg-glow {
  position: absolute;
  top: -200px; left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle at center, rgba(29, 99, 237, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 80%, rgba(29, 99, 237, 0.04) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 20%, rgba(59, 130, 246, 0.03) 0%, transparent 60%);
  pointer-events: none;
}

/* ── İki sütun layout ── */
.hero__inner {
  position: relative;
  z-index: 1;
  max-width: 1160px;
  width: 100%;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 64px;
}

.hero__content {
  text-align: left;
  max-width: 620px;
}

/* ── Profil fotoğrafı ── */
.hero__photo-wrap {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-shrink: 0;
}

.hero__photo-frame {
  position: relative;
  width: 320px;
  height: 380px;
  border-radius: 24px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow:
    0 0 0 6px rgba(29, 99, 237, 0.06),
    0 32px 80px rgba(0, 0, 0, 0.6),
    0 0 30px rgba(29, 99, 237, 0.1);
  animation: fadeUp 0.9s 0.3s both;
}

.hero__photo-frame::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    transparent 55%,
    rgba(10, 10, 15, 0.6) 100%
  );
  z-index: 1;
  pointer-events: none;
}

.hero__photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  display: block;
  transition: transform 0.5s ease;
}

.hero__photo-frame:hover .hero__photo {
  transform: scale(1.04);
}



.hero__eyebrow {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--accent-light);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 16px;
  opacity: 0;
  animation: fadeUp 0.8s 0.2s forwards;
}

.hero__name {
  font-family: var(--font-display);
  font-size: clamp(3rem, 8vw, 5.5rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
  opacity: 0;
  animation: fadeUp 0.8s 0.4s forwards;
}

.hero__name--accent {
  color: #60a5fa;
  text-shadow: 0 0 30px rgba(29, 99, 237, 0.25);
}

.hero__title {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  font-weight: 400;
  color: var(--text-secondary);
  letter-spacing: 0.02em;
  margin-bottom: 24px;
  opacity: 0;
  animation: fadeUp 0.8s 0.6s forwards;
}

.hero__bio {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 40px;
  line-height: 1.8;
  opacity: 0;
  animation: fadeUp 0.8s 0.8s forwards;
}

.hero__cta {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  opacity: 0;
  animation: fadeUp 0.8s 1s forwards;
}

.hero__scroll-hint {
  position: absolute;
  bottom: 36px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hero__scroll-hint span {
  display: block;
  width: 1px;
  height: 60px;
  background: linear-gradient(to bottom, var(--accent), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}

/* ===========================
   SECTIONS
   =========================== */
.section {
  padding: 100px 0;
}

.section--dark {
  background: var(--bg-secondary);
  position: relative;
}

.section--dark::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 50% 0%, rgba(29, 99, 237, 0.03) 0%, transparent 60%);
  pointer-events: none;
}

.section__header {
  text-align: center;
  margin-bottom: 64px;
}

.section__tag {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #93c5fd;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.09);
  padding: 6px 16px;
  border-radius: 100px;
  margin-bottom: 16px;
}

.section__title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.section__desc {
  margin-top: 16px;
  color: var(--text-secondary);
  font-size: 1.05rem;
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
}

/* ===========================
   ABOUT
   =========================== */
.about__grid {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 64px;
  align-items: start;
}

.about__text p {
  color: var(--text-secondary);
  margin-bottom: 20px;
  font-size: 1rem;
  line-height: 1.85;
}

.about__focus-grid {
  margin-top: 36px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  border-top: 1px solid var(--border);
  padding-top: 28px;
}

.focus-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 18px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.focus-item:hover {
  background: var(--accent-glow);
  border-color: var(--accent-border);
  border-left-color: var(--accent-light);
  transform: translateX(4px);
}

.focus-item__tag {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-light);
}

.focus-item__value {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 0 !important;
  line-height: 1.4;
}

.about__stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 28px 20px;
  text-align: center;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  min-height: 140px;
  transition: var(--transition);
}

.stat-card:hover {
  border-color: var(--accent-border);
  background: var(--bg-card-hover);
  transform: translateY(-3px);
  box-shadow: var(--shadow-glow);
}

.stat-card__number {
  display: block;
  font-family: var(--font-display);
  font-size: 2.6rem;
  font-weight: 700;
  color: var(--accent-light);
  line-height: 1.1;
  margin-bottom: 8px;
}

.stat-card__number--text {
  font-family: var(--font-body);
  font-size: 1.65rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--accent-light);
}

.stat-card__label {
  font-size: 0.76rem;
  font-weight: 600;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  line-height: 1.4;
}

/* ===========================
   TIMELINE
   =========================== */
.timeline {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.timeline__item {
  display: grid;
  grid-template-columns: 32px 1fr;
  gap: 24px;
  margin-bottom: 0;
}

.timeline__marker {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: 6px;
}

.timeline__dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--bg-secondary);
  border: 2px solid var(--text-muted);
  flex-shrink: 0;
  position: relative;
  z-index: 1;
  transition: var(--transition);
}

.timeline__dot--active {
  background: var(--accent);
  border-color: var(--accent);
  box-shadow: 0 0 10px rgba(29, 99, 237, 0.4);
}

.timeline__line {
  flex: 1;
  width: 1px;
  background: var(--border);
  margin: 8px 0;
  min-height: 40px;
}

.timeline__content {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 28px;
  margin-bottom: 24px;
  transition: var(--transition);
}

.timeline__content:hover {
  border-color: var(--accent-border);
  background: var(--bg-card-hover);
  box-shadow: var(--shadow-glow);
}

.timeline__header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.timeline__header:last-child {
  margin-bottom: 0;
}

.timeline__role {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.timeline__company {
  font-size: 0.9rem;
  color: var(--accent-light);
  font-weight: 500;
}

.timeline__badge {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 5px 14px;
  border-radius: 100px;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  white-space: nowrap;
  flex-shrink: 0;
}

.timeline__badge--active {
  background: rgba(29, 99, 237, 0.1);
  border-color: rgba(29, 99, 237, 0.3);
  color: #93c5fd;
}

.timeline__list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.timeline__list li {
  font-size: 0.9rem;
  color: var(--text-secondary);
  padding-left: 20px;
  position: relative;
  line-height: 1.65;
}

.timeline__list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 9px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}

.timeline__list strong {
  color: var(--text-primary);
  font-weight: 600;
}

/* Stratejik Sorumluluk Rozetleri / Hapları */
.timeline__pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  padding: 0;
  margin: 0;
}

.timeline__pill {
  display: inline-flex;
  align-items: center;
  font-size: 0.82rem;
  font-weight: 500;
  color: #cbd5e1;
  background: rgba(29, 99, 237, 0.08);
  border: 1px solid rgba(29, 99, 237, 0.22);
  padding: 6px 14px;
  border-radius: 100px;
  line-height: 1.4;
  transition: var(--transition);
}

.timeline__pill::before {
  content: '';
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent-light);
  margin-right: 8px;
  flex-shrink: 0;
}

.timeline__pill:hover {
  background: rgba(29, 99, 237, 0.16);
  border-color: rgba(59, 130, 246, 0.45);
  color: #fff;
  transform: translateY(-1px);
}

/* Volunteer */
.volunteer-section {
  margin-top: 48px;
  padding-top: 48px;
  border-top: 1px solid var(--border);
}

.volunteer-section__title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-secondary);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-size: 0.8rem;
  margin-bottom: 20px;
}

.volunteer-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 28px;
  transition: var(--transition);
}

.volunteer-card:hover {
  border-color: var(--accent-border);
  background: var(--bg-card-hover);
}

.volunteer-card__header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.volunteer-card__role {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
  line-height: 1.4;
}

.volunteer-card__org {
  font-size: 0.875rem;
  color: var(--accent-light);
  font-weight: 500;
}

/* ===========================
   SKILLS
   =========================== */
.skills__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 20px;
  margin-bottom: 0;
}

.skill-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 28px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.skill-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 3px;
  height: 0;
  background: linear-gradient(to bottom, var(--accent), var(--accent-light));
  border-radius: 0 0 2px 2px;
  transition: height 0.4s ease;
}

.skill-card:hover::before { height: 100%; }

.skill-card:hover {
  border-color: rgba(29, 99, 237, 0.35);
  background: var(--bg-card-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-card), 0 0 0 1px rgba(29, 99, 237, 0.2);
}

.skill-card__icon {
  width: 44px;
  height: 44px;
  background: var(--accent-glow);
  border: 1px solid var(--accent-border);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  color: var(--accent-light);
}

.skill-card__icon svg { width: 22px; height: 22px; }

.skill-card__title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 14px;
  line-height: 1.4;
}

.skill-card__list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.skill-card__list li {
  font-size: 0.82rem;
  color: var(--text-muted);
  padding-left: 14px;
  position: relative;
  line-height: 1.5;
}

.skill-card__list li::before {
  content: '›';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 700;
}

.skill-card__list strong {
  color: var(--text-primary);
  font-weight: 600;
}


/* ===========================
   FEATURED MILESTONES & CASES
   =========================== */
.cases__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.case-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
  box-shadow: var(--shadow-card);
}

.case-card:hover {
  border-color: rgba(29, 99, 237, 0.4);
  background: var(--bg-card-hover);
  transform: translateY(-6px);
  box-shadow: var(--shadow-card), 0 0 24px rgba(29, 99, 237, 0.15);
}

.case-card__img-wrap {
  position: relative;
  width: 100%;
  height: 200px;
  overflow: hidden;
  background: #080a0f;
}

.case-card__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  display: block;
}

.case-card:hover .case-card__img {
  transform: scale(1.06);
}

.case-card__overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(180deg, rgba(11, 13, 19, 0.1) 0%, rgba(18, 21, 28, 0.85) 85%, var(--bg-card) 100%);
  display: flex;
  align-items: flex-start;
  justify-content: flex-end;
  padding: 16px;
  pointer-events: none;
}

.case-card__badge {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #93c5fd;
  background: rgba(11, 13, 19, 0.85);
  border: 1px solid rgba(29, 99, 237, 0.35);
  padding: 4px 10px;
  border-radius: 100px;
  backdrop-filter: blur(8px);
}

.case-card__body {
  padding: 24px 28px 28px;
  display: flex;
  flex-direction: column;
  flex: 1;
  gap: 12px;
}

.case-card__tag {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent-light);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.case-card__title {
  font-family: var(--font-display);
  font-size: 1.18rem;
  font-weight: 600;
  line-height: 1.4;
  color: var(--text-primary);
}

.case-card__desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.75;
  flex: 1;
}

.case-card__footer {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  padding-top: 16px;
  margin-top: 4px;
  border-top: 1px solid var(--border);
}

/* ===========================
   PUBLICATIONS
   =========================== */
.pub-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
}

/* 3'lü kart grid */
.pub-grid--three {
  grid-template-columns: repeat(3, 1fr);
}


.pub-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.pub-card::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-light));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}

.pub-card:hover::after { transform: scaleX(1); }

.pub-card:hover {
  border-color: rgba(29, 99, 237, 0.35);
  background: var(--bg-card-hover);
  transform: translateY(-6px);
  box-shadow: var(--shadow-card), 0 0 0 1px rgba(29, 99, 237, 0.2);
}

.pub-card__top {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.pub-card__category {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #93c5fd;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.09);
  padding: 4px 12px;
  border-radius: 100px;
}

.pub-card__year {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 500;
}

.pub-card__title {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
  line-height: 1.4;
  color: var(--text-primary);
}

.pub-card__summary {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.8;
  flex: 1;
}

.pub-card__footer {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 12px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.pub-card__tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.pub-tag {
  font-size: 0.72rem;
  font-weight: 500;
  padding: 4px 10px;
  border-radius: 100px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  color: var(--text-muted);
}

.pub-card__link {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--accent-light);
  transition: var(--transition);
  flex-shrink: 0;
}

/* İndirme butonu varyantı */
.pub-card__link--dl {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  border-radius: var(--radius-sm);
  background: var(--accent-glow);
  border: 1px solid var(--accent-border);
  font-size: 0.78rem;
  letter-spacing: 0.02em;
}

.pub-card__link--dl:hover {
  background: rgba(29, 99, 237, 0.2);
  border-color: var(--accent);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(29, 99, 237, 0.3);
}

.pub-card__link:hover {
  color: #93c5fd;
}

/* ===========================
   CONTACT
   =========================== */
.contact__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-bottom: 48px;
}

/* İki kartlık sadeleştirilmiş iletişim grid'i */
.contact__grid--two {
  max-width: 680px;
  margin-left: auto;
  margin-right: auto;
}

.contact-card {
  display: flex;
  align-items: center;
  gap: 18px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 24px;
  transition: var(--transition);
  cursor: pointer;
}

.contact-card:hover {
  border-color: var(--accent-border);
  background: var(--bg-card-hover);
  transform: translateY(-3px);
  box-shadow: var(--shadow-glow);
}

.contact-card--location {
  cursor: default;
}

.contact-card__icon {
  width: 48px;
  height: 48px;
  background: var(--accent-glow);
  border: 1px solid var(--accent-border);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-light);
  flex-shrink: 0;
}

.contact-card__icon svg { width: 22px; height: 22px; }

.contact-card__label {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.contact-card__value {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-primary);
}

.contact__cta {
  text-align: center;
}

/* ===========================
   FOOTER
   =========================== */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding: 32px 0;
  text-align: center;
}

.footer__text {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* ===========================
   ANIMATIONS
   =========================== */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.3; transform: scaleY(0.8); }
  50%       { opacity: 1;   transform: scaleY(1.1); }
}

[data-aos] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

[data-aos].aos-animate {
  opacity: 1;
  transform: translateY(0);
}

/* ===========================
   RESPONSIVE
   =========================== */
@media (max-width: 1024px) {
  .about__grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  .about__stats {
    grid-template-columns: repeat(4, 1fr);
  }
  .skills__grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .cases__grid {
    grid-template-columns: repeat(2, 1fr);
  }
  /* 3'lü kart → 2'li */
  .pub-grid--three {
    grid-template-columns: repeat(2, 1fr);
  }
  /* Hero foto küçültme */
  .hero__photo-frame {
    width: 260px;
    height: 310px;
  }
}

@media (max-width: 768px) {
  .section { padding: 72px 0; }

  /* Nav mobile */
  .nav__hamburger { display: flex; }

  .nav__links {
    position: fixed;
    top: 68px; left: 0; right: 0;
    background: rgba(10, 10, 15, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    align-items: stretch;
    padding: 20px 24px 28px;
    gap: 4px;
    border-bottom: 1px solid var(--border);
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: var(--transition);
  }

  .nav__links.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }

  .nav__link { padding: 12px 16px; font-size: 0.95rem; }
  .btn--sm { width: 100%; justify-content: center; margin-top: 8px; }
  .nav__lang-item {
    justify-content: center;
    margin-top: 10px;
    padding-top: 10px;
    border-top: 1px solid var(--border);
  }

  /* Hamburger active */
  .nav__hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
  .nav__hamburger.active span:nth-child(2) { opacity: 0; transform: translateX(-8px); }
  .nav__hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

  /* Hero */
  .hero { padding: 100px 24px 80px; }
  .hero__inner {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 40px;
  }
  .hero__content { text-align: center; max-width: 100%; }
  .hero__cta { flex-direction: column; align-items: center; }
  .hero__cta .btn { width: 100%; max-width: 280px; justify-content: center; }
  .hero__photo-wrap { order: -1; }
  .hero__photo-frame { width: 200px; height: 240px; }

  /* About */
  .about__stats { grid-template-columns: repeat(2, 1fr); }

  /* Timeline */
  .timeline__header { flex-direction: column; align-items: flex-start; }
  .timeline__badge { align-self: flex-start; }

  /* Skills */
  .skills__grid { grid-template-columns: 1fr; }

  /* Cases */
  .cases__grid { grid-template-columns: 1fr; }

  /* Pubs */
  .pub-grid,
  .pub-grid--three { grid-template-columns: 1fr; }
  .pub-card { padding: 28px; }
  .pub-card__footer { flex-direction: column; align-items: flex-start; }

  /* Contact */
  .contact__grid { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .about__stats { grid-template-columns: 1fr 1fr; }
  .hero__name { font-size: 2.8rem; }
  .hero__photo-frame { display: none; }
  .timeline__content { padding: 20px; }
  .stat-card { padding: 24px 16px; }
  .stat-card__number { font-size: 2.2rem; }
}

/* Scrollbar */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--accent); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent-light); }

/* Selection */
::selection { background: rgba(29, 99, 237, 0.35); color: #fff; }

/* TOC active link */
.toc a.toc-active {
  color: var(--accent-light);
  background: var(--accent-glow);
  font-weight: 600;
}