/* =========================================================
   Ayberk Erdal — Portfolyo
   Tek dosya stil. Renkleri değiştirmek için :root altındaki
   --accent değişkenlerine dokunman yeterli.
   ========================================================= */

/* ---------- Tokens ---------- */
:root {
  --accent:        #6d8cff;
  --accent-2:      #b06dff;
  --accent-soft:   rgba(109, 140, 255, .14);

  --bg:            #0b0d12;
  --bg-alt:        #0f121a;
  --surface:       #141824;
  --surface-2:     #1a1f2e;
  --border:        rgba(255, 255, 255, .09);
  --border-strong: rgba(255, 255, 255, .16);

  --text:          #e8ebf2;
  --text-dim:      #9aa3b8;
  --text-faint:    #6b7488;

  --ok:            #4ade80;
  --err:           #f87171;

  --radius:        14px;
  --radius-lg:     20px;
  --wrap:          1140px;
  --shadow:        0 1px 2px rgba(0,0,0,.3), 0 12px 32px -12px rgba(0,0,0,.55);

  --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
          "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;

  --ease: cubic-bezier(.22, 1, .36, 1);
}

:root[data-theme="light"] {
  --bg:            #ffffff;
  --bg-alt:        #f6f7fb;
  --surface:       #ffffff;
  --surface-2:     #f2f4f9;
  --border:        rgba(10, 15, 30, .10);
  --border-strong: rgba(10, 15, 30, .18);

  --text:          #131722;
  --text-dim:      #59617a;
  --text-faint:    #858da3;

  --accent:        #4361ee;
  --accent-2:      #8b45e0;
  --accent-soft:   rgba(67, 97, 238, .10);

  --shadow:        0 1px 2px rgba(16,24,40,.05), 0 12px 32px -12px rgba(16,24,40,.18);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 90px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  transition: background .35s var(--ease), color .35s var(--ease);
}

img, svg { display: block; max-width: 100%; }
img { height: auto; }
a { color: inherit; text-decoration: none; }
button, input, textarea { font: inherit; color: inherit; }
ul, ol { list-style: none; padding: 0; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .01ms !important;
    transition-duration: .01ms !important;
  }
}

.wrap { width: 100%; max-width: var(--wrap); margin-inline: auto; padding-inline: 24px; }

.skip-link {
  position: absolute; left: 16px; top: -60px; z-index: 200;
  background: var(--accent); color: #fff; padding: 10px 18px;
  border-radius: 0 0 10px 10px; transition: top .2s;
}
.skip-link:focus { top: 0; }

/* ---------- Icons ---------- */
svg { stroke: currentColor; fill: none; stroke-width: 1.9; stroke-linecap: round; stroke-linejoin: round; }
.cert-icon svg, .socials svg, .footer svg { fill: none; }
.ico { width: 16px; height: 16px; flex: none; }

/* =========================================================
   NAV
   ========================================================= */
.nav {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  background: transparent;
  transition: background .3s var(--ease), border-color .3s, backdrop-filter .3s;
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: saturate(160%) blur(14px);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  border-bottom-color: var(--border);
}
.nav-inner { display: flex; align-items: center; gap: 20px; height: 72px; }

.brand { display: flex; align-items: center; gap: 11px; font-weight: 650; letter-spacing: -.01em; }
/* Marka işareti: profil fotoğrafı, yuvarlak */
.brand-mark {
  display: block; width: 34px; height: 34px; flex: none;
  border-radius: 50%; object-fit: cover;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 0 0 1px var(--border-strong);
  transition: box-shadow .2s, transform .18s var(--ease);
}
.brand:hover .brand-mark {
  transform: scale(1.06);
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--accent) 70%, transparent);
}
.brand-text { font-size: 15.5px; }

.nav-links { margin-left: auto; display: flex; gap: 4px; }
.nav-links a {
  position: relative; padding: 8px 14px; border-radius: 9px;
  font-size: 14.5px; color: var(--text-dim);
  transition: color .2s, background .2s;
}
.nav-links a:hover { color: var(--text); background: var(--surface-2); }
.nav-links a.active { color: var(--text); }
.nav-links a.active::after {
  content: ""; position: absolute; left: 14px; right: 14px; bottom: 3px;
  height: 2px; border-radius: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
}

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

/* Dil değiştirici — "Deneyim / Eğitim" sekmeleriyle aynı davranış:
   seçili olanın arka planı koyulaşır, gradyan yok. */
.lang-switch {
  display: inline-flex; gap: 3px; padding: 4px;
  border: 1px solid var(--border); border-radius: 11px; background: var(--surface);
}
.lang-opt {
  padding: 6px 12px; border-radius: 8px; background: transparent;
  font-size: 12.5px; font-weight: 600; letter-spacing: .04em;
  color: var(--text-dim); transition: color .2s, background .2s;
}
.lang-opt:hover { color: var(--text); background: var(--surface-2); }
.lang-opt.is-active { color: var(--text); background: var(--surface-2); }

.icon-btn {
  display: grid; place-items: center; width: 38px; height: 38px;
  border: 1px solid var(--border); border-radius: 10px;
  background: var(--surface); cursor: pointer;
  transition: border-color .2s, background .2s, transform .15s;
}
.icon-btn:hover { border-color: var(--border-strong); transform: translateY(-1px); }
.icon-btn svg { width: 18px; height: 18px; }

.i-moon { display: none; }
:root[data-theme="light"] .i-sun  { display: none; }
:root[data-theme="light"] .i-moon { display: block; }

.nav-toggle { display: none; flex-direction: column; gap: 4px; }
.nav-toggle .bar {
  width: 17px; height: 2px; border-radius: 2px; background: currentColor;
  transition: transform .28s var(--ease), opacity .2s;
}
.nav-toggle[aria-expanded="true"] .bar:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .bar:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .bar:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* =========================================================
   HERO
   ========================================================= */
.hero { position: relative; padding: 168px 0 108px; overflow: hidden; }
.hero-glow {
  position: absolute; top: -220px; left: 50%; transform: translateX(-50%);
  width: min(1000px, 130vw); height: 640px; pointer-events: none;
  background:
    radial-gradient(46% 52% at 32% 42%, color-mix(in srgb, var(--accent) 26%, transparent), transparent 70%),
    radial-gradient(44% 50% at 70% 52%, color-mix(in srgb, var(--accent-2) 22%, transparent), transparent 70%);
  filter: blur(28px); opacity: .85;
}
:root[data-theme="light"] .hero-glow { opacity: .55; }

.hero-inner { position: relative; }

.eyebrow {
  display: inline-flex; align-items: center; gap: 9px;
  padding: 6px 14px 6px 11px; margin-bottom: 26px;
  border: 1px solid var(--border); border-radius: 999px;
  background: var(--surface); color: var(--text-dim);
  font-size: 13.5px; letter-spacing: .01em;
}
.eyebrow .dot {
  width: 7px; height: 7px; border-radius: 50%; background: var(--ok);
  box-shadow: 0 0 0 0 color-mix(in srgb, var(--ok) 60%, transparent);
  animation: pulse 2.4s infinite;
}
@keyframes pulse {
  70%  { box-shadow: 0 0 0 8px transparent; }
  100% { box-shadow: 0 0 0 0 transparent; }
}

.hero-title {
  font-size: clamp(2.4rem, 6.2vw, 4.3rem);
  line-height: 1.06; font-weight: 780; letter-spacing: -.035em;
  max-width: 15ch;
}
.grad {
  background: linear-gradient(105deg, var(--accent), var(--accent-2) 60%, var(--accent));
  background-size: 200% auto;
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
  animation: shine 7s linear infinite;
}
@keyframes shine { to { background-position: 200% center; } }

.hero-sub {
  margin-top: 22px; max-width: 58ch;
  font-size: clamp(1rem, 1.6vw, 1.16rem); color: var(--text-dim);
}

.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  padding: 12px 24px; border-radius: 11px; border: 1px solid transparent;
  font-size: 14.8px; font-weight: 560; cursor: pointer; white-space: nowrap;
  transition: transform .16s var(--ease), box-shadow .25s, background .2s, border-color .2s, opacity .2s;
}
.btn:active { transform: translateY(1px); }
.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 6px 22px -8px color-mix(in srgb, var(--accent) 80%, transparent);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 30px -10px color-mix(in srgb, var(--accent) 85%, transparent); }
.btn-ghost { background: var(--surface); border-color: var(--border); color: var(--text); }
.btn-ghost:hover { border-color: var(--border-strong); transform: translateY(-2px); }
.btn-block { width: 100%; }
.btn[disabled] { opacity: .6; cursor: not-allowed; transform: none; }

.stats {
  display: flex; flex-wrap: wrap; gap: 14px 46px; margin-top: 56px;
  padding-top: 30px; border-top: 1px solid var(--border);
}
.stat dt { font-size: 13px; color: var(--text-faint); margin-bottom: 2px; }
.stat dd { font-size: 1.65rem; font-weight: 720; letter-spacing: -.02em; }

/* =========================================================
   SECTIONS
   ========================================================= */
.section { padding: 104px 0; }
.section.alt { background: var(--bg-alt); }

.sec-head { display: flex; align-items: baseline; gap: 14px; margin-bottom: 48px; }
.sec-num {
  font-family: var(--mono); font-size: 13px; font-weight: 600;
  color: var(--accent); letter-spacing: .06em;
}
.sec-head h2 {
  font-size: clamp(1.6rem, 3.4vw, 2.25rem);
  font-weight: 720; letter-spacing: -.028em;
}
.sec-head::after {
  content: ""; flex: 1; height: 1px; margin-left: 6px;
  background: linear-gradient(90deg, var(--border), transparent);
}

/* ---------- Cards ---------- */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: transform .28s var(--ease), border-color .25s, box-shadow .3s;
}
.card:hover { transform: translateY(-4px); border-color: var(--border-strong); box-shadow: var(--shadow); }

.grid { display: grid; gap: 20px; }
.projects { grid-template-columns: repeat(auto-fill, minmax(310px, 1fr)); }
.skills   { grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); }
.certs    { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }

.chips { display: flex; flex-wrap: wrap; gap: 7px; }
.chips li {
  padding: 4px 11px; border-radius: 7px;
  background: var(--accent-soft); color: var(--accent);
  font-size: 12.3px; font-weight: 540; letter-spacing: .01em;
}
.chips.lg li {
  background: var(--surface-2); color: var(--text-dim);
  border: 1px solid var(--border); padding: 6px 13px; font-size: 13px;
}

.muted { color: var(--text-dim); font-size: 14px; }

.badge {
  display: inline-block; margin-bottom: 9px;
  padding: 3px 10px; border-radius: 6px;
  background: var(--accent-soft); color: var(--accent);
  font-size: 11.5px; font-weight: 640; letter-spacing: .04em; text-transform: uppercase;
}

.mini-head {
  font-size: 12px; font-weight: 640; text-transform: uppercase;
  letter-spacing: .1em; color: var(--text-faint); margin-bottom: 14px;
}

/* Dil seviyesi çubukları */
.langs { margin-top: 30px; }
.lang-list { display: grid; gap: 11px; max-width: 460px; }
.lang-list li { display: grid; grid-template-columns: 88px 1fr 92px; align-items: center; gap: 12px; }
.lang-list span { font-size: 14px; color: var(--text-dim); }
.lang-list b { font-size: 13px; font-weight: 560; color: var(--text-faint); text-align: right; }
.bar-track {
  display: block; height: 6px; border-radius: 4px;
  background: var(--surface-2); border: 1px solid var(--border); overflow: hidden;
}
.bar-fill {
  display: block; height: 100%; border-radius: 4px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
}
.l-100 { width: 100%; }
.l-95  { width: 95%; }
.l-90  { width: 90%; }
.l-55  { width: 55%; }
.l-25  { width: 25%; }

.sk-ico { color: var(--accent); margin-right: 7px; font-size: .9em; }

.lnk {
  display: inline-flex; align-items: center; gap: 5px;
  font-size: 13.8px; font-weight: 540; color: var(--text-dim);
  transition: color .2s, gap .2s;
}
.lnk:hover { color: var(--accent); gap: 8px; }

/* ---------- Hakkımda ---------- */
.about { display: grid; grid-template-columns: 1fr 300px; gap: 48px; align-items: start; }
.about-text p { color: var(--text-dim); margin-bottom: 16px; max-width: 62ch; }

/* 4 bilgi kutusu var; minmax(190px) 3 sütun üretip 4.'yü tek başına alt
   satırda bırakıyordu. 2x2 dengeli duruyor. */
.facts {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 14px; margin-top: 28px;
}
.facts li {
  padding: 13px 16px; border-radius: var(--radius);
  background: var(--surface); border: 1px solid var(--border);
}
.facts span { display: block; font-size: 11.5px; text-transform: uppercase; letter-spacing: .09em; color: var(--text-faint); }
.facts b { font-weight: 560; font-size: 14.5px; }
.facts b a:hover { color: var(--accent); }
.facts .ok { color: var(--ok); }

.about-card {
  padding: 18px; border-radius: var(--radius-lg);
  background: var(--surface); border: 1px solid var(--border);
}
.avatar {
  border-radius: var(--radius); overflow: hidden;
  aspect-ratio: 1; background: var(--surface-2);
}
.avatar img { width: 100%; height: 100%; object-fit: cover; }

.socials { display: flex; justify-content: center; gap: 10px; margin-top: 16px; }
.socials a {
  display: grid; place-items: center; width: 40px; height: 40px;
  border-radius: 10px; border: 1px solid var(--border);
  background: var(--surface-2); color: var(--text-dim);
  transition: color .2s, border-color .2s, transform .18s;
}
.socials a:hover { color: var(--accent); border-color: var(--accent); transform: translateY(-2px); }
.socials svg { width: 19px; height: 19px; }
.socials a:first-child svg, .socials a:nth-child(2) svg { fill: currentColor; stroke: none; }

/* ---------- Timeline ---------- */
.tl-tabs { display: inline-flex; gap: 4px; padding: 4px; margin-bottom: 34px;
  border-radius: 12px; background: var(--surface); border: 1px solid var(--border); }
.tl-tab {
  padding: 8px 20px; border: 0; border-radius: 9px; background: transparent;
  color: var(--text-dim); font-size: 14px; font-weight: 540; cursor: pointer;
  transition: background .2s, color .2s;
}
.tl-tab.is-active { background: var(--surface-2); color: var(--text); }

.timeline { position: relative; padding-left: 26px; }
.timeline::before {
  content: ""; position: absolute; left: 5px; top: 8px; bottom: 8px; width: 2px;
  background: linear-gradient(180deg, var(--accent), color-mix(in srgb, var(--accent-2) 50%, transparent), transparent);
  border-radius: 2px;
}
.tl-item { position: relative; padding-bottom: 36px; }
.tl-item:last-child { padding-bottom: 0; }
.tl-item::before {
  content: ""; position: absolute; left: -26px; top: 7px;
  width: 12px; height: 12px; border-radius: 50%;
  background: var(--bg-alt); border: 2px solid var(--accent);
}
.tl-date {
  font-family: var(--mono); font-size: 12.5px; color: var(--accent);
  letter-spacing: .04em; margin-bottom: 5px;
}
.tl-body h3 { font-size: 1.08rem; font-weight: 640; letter-spacing: -.012em; }
.tl-org { color: var(--text-faint); font-weight: 450; font-size: .92em; }
.tl-body p { color: var(--text-dim); font-size: 14.8px; margin: 7px 0 11px; max-width: 68ch; }

/* ---------- Projeler ---------- */
.filters { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 30px; }
.filter {
  padding: 7px 17px; border-radius: 999px;
  border: 1px solid var(--border); background: var(--surface);
  color: var(--text-dim); font-size: 13.6px; font-weight: 520; cursor: pointer;
  transition: color .2s, border-color .2s, background .2s;
}
.filter:hover { color: var(--text); border-color: var(--border-strong); }
.filter.is-active { color: #fff; border-color: transparent; background: linear-gradient(135deg, var(--accent), var(--accent-2)); }

.project { display: flex; flex-direction: column; overflow: hidden; }
.project.is-hidden { display: none; }
.card-thumb { aspect-ratio: 16/10; overflow: hidden; background: var(--surface-2); }
.card-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s var(--ease); }
.project:hover .card-thumb img { transform: scale(1.045); }
.card-body { padding: 20px 20px 16px; flex: 1; }
.card-body h3 { font-size: 1.06rem; font-weight: 640; letter-spacing: -.012em; }
.card-body p { color: var(--text-dim); font-size: 14.3px; margin: 8px 0 14px; }
.card-foot {
  display: flex; gap: 18px; padding: 13px 20px;
  border-top: 1px solid var(--border);
}

/* ---------- Yetenekler ---------- */
.skill { padding: 24px 22px; }
.skill h3 { font-size: 1rem; font-weight: 640; margin-bottom: 15px; }

/* ---------- Sertifikalar ---------- */
.cert { display: flex; align-items: center; gap: 16px; padding: 20px; }
.cert-icon {
  display: grid; place-items: center; width: 44px; height: 44px; flex: none;
  border-radius: 12px; color: var(--accent); background: var(--accent-soft);
}
.cert-icon svg { width: 21px; height: 21px; }
.cert h3 { font-size: .98rem; font-weight: 620; }
.cert .lnk { margin-left: auto; flex: none; }

/* ---------- Referans ---------- */
.reference { margin-top: 40px; }
.ref-card { display: flex; align-items: center; gap: 16px; padding: 18px 20px; max-width: 460px; }
.ref-card:hover { transform: none; box-shadow: none; border-color: var(--border); }
.ref-avatar {
  display: grid; place-items: center; width: 46px; height: 46px; flex: none;
  border-radius: 50%; color: #fff; font-size: 15px; font-weight: 700; letter-spacing: .02em;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
}
.ref-body { display: grid; gap: 2px; min-width: 0; }
.ref-body b { font-size: .97rem; font-weight: 620; }
.ref-body .muted { font-size: 13.2px; }
.ref-body .lnk { font-size: 13.2px; margin-top: 3px; }

/* ---------- İletişim ---------- */
.contact-cta { text-align: center; margin-bottom: 40px; }
.lead { font-size: clamp(1.1rem, 2.4vw, 1.4rem); color: var(--text); font-weight: 600; letter-spacing: -.02em; }
.contact-cta .muted { margin-top: 14px; }

/* align-items: stretch → e-posta düğmesi ile Kopyala düğmesi aynı yükseklikte
   olur. İkisinin yazı boyutu farklı olduğu için "center" ile hizasız duruyorlardı. */
.mail-row {
  display: flex; flex-wrap: wrap; align-items: stretch; justify-content: center;
  gap: 10px; margin-top: 22px;
}

.mail-link {
  display: inline-flex; align-items: center; gap: 11px;
  padding: 13px 22px; border-radius: 13px;
  border: 1px solid var(--border); background: var(--surface);
  font-size: clamp(.95rem, 2.4vw, 1.15rem); font-weight: 600; letter-spacing: -.01em;
  transition: border-color .2s, transform .18s var(--ease), box-shadow .25s;
  max-width: 100%;
}
.mail-link span { overflow-wrap: anywhere; }
.mail-link svg { width: 20px; height: 20px; flex: none; color: var(--accent); }
.mail-link:hover {
  border-color: var(--accent); transform: translateY(-2px);
  box-shadow: 0 10px 26px -14px color-mix(in srgb, var(--accent) 90%, transparent);
}

.copy-btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 18px; border-radius: 13px; cursor: pointer;
  border: 1px solid var(--border); background: var(--surface);
  color: var(--text-dim); font-size: 14px; font-weight: 540;
  transition: color .2s, border-color .2s, transform .18s;
}
.copy-btn:hover { color: var(--text); border-color: var(--border-strong); transform: translateY(-2px); }
.copy-btn svg { width: 17px; height: 17px; flex: none; }
.copy-btn .i-check { display: none; }
.copy-btn.copied { color: var(--ok); border-color: var(--ok); }
.copy-btn.copied .i-copy { display: none; }
.copy-btn.copied .i-check { display: block; }

/* Kartlar ortadaki CTA ile aynı eksende dursun diye genişlik sınırlı ve ortalı */
.contact-cards {
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  max-width: 720px; margin-inline: auto;
}
.contact-card { display: flex; align-items: center; gap: 15px; padding: 18px 20px; }
.contact-card.is-static { cursor: default; }
.contact-card.is-static:hover { transform: none; box-shadow: none; border-color: var(--border); }
.cc-icon {
  display: grid; place-items: center; width: 42px; height: 42px; flex: none;
  border-radius: 12px; color: var(--accent); background: var(--accent-soft);
}
.cc-icon svg { width: 20px; height: 20px; }
.cc-fill svg { fill: currentColor; stroke: none; }
.cc-body { display: grid; gap: 2px; min-width: 0; }
.cc-body b { font-size: .97rem; font-weight: 620; }
.cc-body .muted { font-size: 13.4px; overflow-wrap: anywhere; }

/* Ekran dışı yardımcı — kopyalama geri dönüşünde geçici textarea için */
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

/* =========================================================
   FOOTER
   ========================================================= */
.footer { border-top: 1px solid var(--border); padding: 28px 0; background: var(--bg); }
.footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.footer p { font-size: 13.8px; color: var(--text-faint); }
.to-top {
  display: grid; place-items: center; width: 38px; height: 38px;
  border-radius: 10px; border: 1px solid var(--border);
  background: var(--surface); color: var(--text-dim);
  transition: color .2s, border-color .2s, transform .2s;
}
.to-top:hover { color: var(--accent); border-color: var(--accent); transform: translateY(-3px); }
.to-top svg { width: 17px; height: 17px; }

/* =========================================================
   404
   ========================================================= */
.page-404 {
  position: relative; overflow: hidden;
  min-height: 100vh; min-height: 100svh;
  display: grid; place-items: center; padding: 40px 0;
}
.e-inner { position: relative; text-align: center; }
.e-code {
  font-family: var(--mono); font-size: 14px; font-weight: 600;
  color: var(--accent); letter-spacing: .12em;
}
.e-title {
  margin-top: 12px;
  font-size: clamp(2.1rem, 5.6vw, 3.6rem);
  font-weight: 780; letter-spacing: -.035em; line-height: 1.08;
}
.e-sub { margin: 18px auto 0; max-width: 44ch; color: var(--text-dim); font-size: 1.05rem; }
.page-404 .btn { margin-top: 30px; }

/* =========================================================
   REVEAL
   ========================================================= */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .6s var(--ease), transform .6s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; } }

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width: 980px) {
  .about   { grid-template-columns: 1fr; gap: 32px; }
  .about-card { max-width: 320px; }
}

@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  .lang-list li { grid-template-columns: 76px 1fr 78px; gap: 9px; }
  .lang-list span, .lang-list b { font-size: 12.5px; }
  .nav-links {
    position: fixed; inset: 72px 0 auto 0;
    flex-direction: column; gap: 2px; padding: 14px 20px 22px;
    background: var(--bg); border-bottom: 1px solid var(--border);
    transform: translateY(-14px); opacity: 0; pointer-events: none;
    transition: opacity .25s var(--ease), transform .25s var(--ease);
  }
  .nav-links.open { transform: none; opacity: 1; pointer-events: auto; }
  .nav-links a { padding: 12px 14px; font-size: 15.5px; }
  .nav-links a.active::after { display: none; }

  .hero { padding: 130px 0 80px; }
  .section { padding: 76px 0; }
  .stats { gap: 18px 32px; margin-top: 40px; }
  .stat dd { font-size: 1.4rem; }
  .wrap { padding-inline: 20px; }
  .cert { flex-wrap: wrap; }
  .cert .lnk { margin-left: 60px; }
}

@media (max-width: 420px) {
  .hero-cta .btn { width: 100%; }
  .mail-link, .copy-btn { width: 100%; justify-content: center; }
  /* Dar ekranda üst çubuk taşmasın: dil düğmeleri ve boşluklar küçülür */
  .nav-actions { gap: 6px; }
  .lang-switch { padding: 2px; }
  .lang-opt { padding: 5px 7px; font-size: 11.5px; }
  .icon-btn { width: 34px; height: 34px; }
  .brand-text { font-size: 14.5px; }
  .wrap { padding-inline: 16px; }
}

/* ---------- Print (CV çıktısı) ---------- */
@media print {
  .nav, .footer, .hero-glow, .copy-btn, .filters, .tl-tabs, .skip-link { display: none !important; }
  body { background: #fff; color: #000; }
  .reveal { opacity: 1; transform: none; }
  .section { padding: 24px 0; page-break-inside: avoid; }
}