/* ===== Reset ===== */
* {
  box-sizing: border-box;
}
html,
body {
  height: 100%;
  margin: 0;
}
body {
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Arial,
    sans-serif;
  line-height: 1.6;
  background: var(--bg);
  color: var(--text);
}
img {
  max-width: 100%;
  display: block;
}
a {
  text-decoration: none;
  color: inherit;
}

/* ===== Tema Değişkenleri ===== */
:root {
  --bg: #0b0d12;
  --surface: #121521;
  --text: #e7e9ee;
  --muted: #a9b0c0;
  --accent: #7dd3fc;
  --ring: rgba(125, 211, 252, 0.35);
  --card: rgba(255, 255, 255, 0.06);
  --card-border: rgba(255, 255, 255, 0.12);
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
}
:root[data-theme="light"],
html[data-theme="light"] {
  --bg: #f7f8fb;
  --surface: #fff;
  --text: #0c1222;
  --muted: #51607a;
  --accent: #2563eb;
  --ring: rgba(37, 99, 235, 0.25);
  --card: rgba(0, 0, 0, 0.04);
  --card-border: rgba(0, 0, 0, 0.08);
  --shadow: 0 10px 24px rgba(0, 0, 0, 0.08);
}

/* ===== Genel Yapı ===== */
.container {
  width: min(1100px, 92%);
  margin: 0 auto;
}
.tiny {
  font-size: 0.9rem;
  color: var(--muted);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(8px);
  background: color-mix(in oklab, var(--bg) 75%, transparent);
  border-bottom: 1px solid var(--card-border);
}
.nav {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.8rem 0;
}

/* === Logo === */
.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.logo-img {
  height: 36px; /* burada ayarlayabilirsin */
  width: auto;
  display: block;
  object-fit: contain;
}
@media (min-width: 1200px) {
  .logo-img {
    height: 40px;
  }
}
/* Tema bazlı logo (opsiyonel) */
.logo-light {
  display: none;
}
html[data-theme="light"] .logo-dark {
  display: none;
}
html[data-theme="light"] .logo-light {
  display: block;
}

/* sağ tepsi (linkler + dil + tema) */
.nav-right {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 1.2rem;
}

/* Linkler */
.nav-links {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-right: 0.75rem;
}
.nav-links a {
  color: var(--text);
  opacity: 0.9;
}
.nav-links a:hover {
  opacity: 1;
  text-decoration: underline;
  text-underline-offset: 4px;
}

/* Kontroller */
.controls {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

/* Dil segmenti */
.lang-segment {
  display: inline-flex;
  border: 1px solid var(--card-border);
  background: var(--card);
  border-radius: 12px;
  overflow: hidden;
}
.lang-option {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--text);
  padding: 0.38rem 0.7rem;
  font-weight: 700;
  cursor: pointer;
}
.lang-option[aria-pressed="true"] {
  background: var(--accent);
  color: #fff;
}
.lang-option:hover {
  outline: 2px solid var(--ring);
}

/* Butonlar */
.icon-btn {
  background: var(--card);
  border: 1px solid var(--card-border);
  padding: 0.5rem 0.7rem;
  border-radius: 10px;
  cursor: pointer;
  box-shadow: var(--shadow);
}
.icon-btn:hover {
  outline: 2px solid var(--ring);
}
.icon-btn.mobile {
  display: none;
}

.btn {
  background: var(--accent);
  color: #fff;
  padding: 0.7rem 1rem;
  border-radius: 12px;
  display: inline-block;
  font-weight: 600;
  box-shadow: var(--shadow);
}
.btn:hover {
  transform: translateY(-1px);
}
.btn-ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--card-border);
}
.btn-outline {
  background: transparent;
  color: var(--accent);
  border: 1px solid color-mix(in oklab, var(--accent) 70%, var(--text));
}
.btn-sm {
  padding: 0.45rem 0.7rem;
  font-size: 0.9rem;
}

/* ===== Hero ===== */
.hero {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  align-items: center;
  gap: 2rem;
  padding: 5rem 0 3rem;
}
.hero h1 {
  font-size: clamp(2.2rem, 4vw, 3rem);
  line-height: 1.1;
  margin: 0 0 0.4rem;
}
.hero .accent {
  color: var(--accent);
}
.hero p {
  color: var(--muted);
}
.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin: 1rem 0 1.2rem;
}

.tech-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.tech-badges span {
  background: var(--card);
  border: 1px solid var(--card-border);
  padding: 0.35rem 0.6rem;
  border-radius: 999px;
  font-size: 0.85rem;
}

.hero-visual {
  position: relative;
  min-height: 260px;
  border-radius: 16px;
  overflow: hidden;
}
.hero-visual img {
  width: 100%;
  height: auto;
  opacity: 0.9;
}
.grid-bg {
  position: absolute;
  inset: 0;
  background-image: linear-gradient(
      transparent,
      transparent 31px,
      var(--card-border) 31px
    ),
    linear-gradient(
      90deg,
      transparent,
      transparent 31px,
      var(--card-border) 31px
    );
  background-size: 32px 32px;
  border-radius: 16px;
  opacity: 0.5;
  mix-blend-mode: overlay;
}
.orb {
  position: absolute;
  filter: blur(24px);
  border-radius: 999px;
  opacity: 0.7;
}
.orb-1 {
  width: 180px;
  height: 180px;
  top: -20px;
  right: 20px;
  background: radial-gradient(
    circle at 30% 30%,
    var(--accent),
    transparent 60%
  );
}
.orb-2 {
  width: 160px;
  height: 160px;
  bottom: 0;
  left: 20px;
  background: radial-gradient(circle at 70% 70%, #22d3ee, transparent 60%);
}

/* ===== Sections ===== */
.section {
  padding: 3.5rem 0;
}
.section h2 {
  font-size: clamp(1.6rem, 2.5vw, 2rem);
  margin-bottom: 0.6rem;
}
.section-desc {
  color: var(--muted);
  margin-bottom: 1.2rem;
}

/* ===== Cards & Grid ===== */
.grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 1rem;
}
.card {
  grid-column: span 6;
  background: linear-gradient(
    180deg,
    color-mix(in oklab, var(--card) 85%, transparent),
    var(--card)
  );
  border: 1px solid var(--card-border);
  border-radius: 16px;
  overflow: hidden;
  backdrop-filter: blur(6px);
  box-shadow: var(--shadow);
  position: relative;
  transform-style: preserve-3d;
  transition: transform 0.12s ease, box-shadow 0.2s ease, border-color 0.2s ease;
  cursor: pointer;
}
.card img {
  aspect-ratio: 16/9;
  object-fit: cover;
}
.card-body {
  padding: 1rem;
}
.card h3 {
  margin: 0.4rem 0;
}
.card p {
  color: var(--muted);
}
.tags {
  display: flex;
  gap: 0.5rem;
  margin: 0.6rem 0;
}
.tags span {
  background: color-mix(in oklab, var(--accent) 18%, transparent);
  color: var(--text);
  border: 1px dashed var(--card-border);
  padding: 0.25rem 0.5rem;
  border-radius: 999px;
  font-size: 0.8rem;
}
.card-actions {
  display: flex;
  gap: 0.6rem;
}

/* Tilt glow */
.card::after {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: 16px;
  background: radial-gradient(
    120px 120px at var(--mx, 50%) var(--my, 50%),
    color-mix(in oklab, var(--accent) 50%, transparent),
    transparent 60%
  );
  opacity: 0;
  transition: opacity 0.2s ease;
  pointer-events: none;
}
.card:hover {
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
  border-color: color-mix(in oklab, var(--accent) 40%, var(--card-border));
}
.card:hover::after {
  opacity: 0.7;
}

/* ===== Timeline ===== */
.timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
}
.timeline::before {
  content: "";
  position: absolute;
  left: 16px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--card-border);
}
.timeline li {
  display: grid;
  grid-template-columns: 80px 24px 1fr;
  gap: 1rem;
  position: relative;
  padding: 0.6rem 0 1.2rem;
}
.timeline .time {
  color: var(--muted);
  font-weight: 600;
}
.timeline .dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid color-mix(in oklab, var(--accent) 40%, var(--surface));
  margin-top: 0.25rem;
}
.timeline .content {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 14px;
  padding: 0.9rem 1rem;
  box-shadow: var(--shadow);
}
.timeline .small {
  color: var(--muted);
  margin: 0.4rem 0 0;
  padding-left: 1rem;
}

/* ===== Skills ===== */
.skills {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.8rem;
}
.skills li {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 14px;
  padding: 0.9rem 1rem;
}
.skills strong {
  display: inline-block;
  min-width: 120px;
}

/* ===== Footer ===== */
.site-footer {
  border-top: 1px solid var(--card-border);
  padding: 1.5rem 0;
  margin-top: 2rem;
}

/* ===== Responsive ===== */
@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
  }
  .nav-right {
    gap: 0.8rem;
  }
  .nav-links {
    display: none;
    position: absolute;
    right: 4%;
    top: 64px;
    flex-direction: column;
    background: var(--surface);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    padding: 0.6rem;
    margin-right: 0;
  }
  .nav-links.show {
    display: flex;
  }
  .icon-btn.mobile {
    display: inline-block;
    margin-left: auto;
  }
  .lang-option {
    padding: 0.44rem 0.8rem;
  }
}

/* ===== Erişilebilirlik ===== */
:focus-visible {
  outline: 3px solid var(--ring);
  outline-offset: 3px;
  border-radius: 8px;
}

/* ---- Arka plan: dark varsayılan, light farklı görsel ---- */
:root {
  --bg-img: url("arkaplan.png");
  --bg-pos: right 8% top 12%;
  --bg-size: clamp(700px, 75vw, 1400px);
  --bg-opacity: 0.14;
  --bg-filter: saturate(0.9) contrast(1);
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background: radial-gradient(
      600px 600px at 80% 20%,
      color-mix(in oklab, var(--accent) 12%, transparent),
      transparent 60%
    ),
    var(--bg-img) var(--bg-pos) / var(--bg-size) no-repeat;
  opacity: var(--bg-opacity);
  filter: var(--bg-filter);
}
header,
main,
footer {
  position: relative;
  z-index: 1;
}
@media (max-width: 900px) {
  body::before {
    background-position: center 12%;
    background-size: 100vw;
    opacity: 0.1;
  }
}

/* LIGHT tema değişkenleri */
html[data-theme="light"] {
  --bg-img: url("acikarkaplan.png");
  --bg-pos: right 6% top 10%;
  --bg-size: clamp(520px, 62vw, 1200px);
  --bg-opacity: 0.06;
  --bg-filter: grayscale(0.85) saturate(0.5) contrast(0.9) brightness(1.05)
    blur(0.4px);
}

/* ===== Lightbox / Galeri ===== */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 999;
  display: none;
}
.lightbox.show {
  display: block;
}
.lb-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(2px);
}
.lb-dialog {
  position: relative;
  margin: min(6vh, 48px) auto;
  width: min(1100px, 92vw);
  background: var(--surface);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  box-shadow: var(--shadow);
  padding: 1rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.6rem;
}
#lbImage {
  max-width: 100%;
  max-height: 70vh;
  object-fit: contain;
  border-radius: 12px;
  box-shadow: var(--shadow);
}
.lb-ctrls {
  display: flex;
  align-items: center;
  gap: 0.8rem;
}
.lb-index {
  color: var(--muted);
  font-size: 0.95rem;
}
.lb-nav,
.lb-close {
  background: var(--card);
  border: 1px solid var(--card-border);
  padding: 0.5rem 0.8rem;
  border-radius: 10px;
  cursor: pointer;
}
.lb-nav {
  font-size: 1.2rem;
}
.lb-close {
  position: absolute;
  top: 0.6rem;
  right: 0.6rem;
  padding: 0.4rem 0.55rem;
}
@media (max-width: 900px) {
  #lbImage {
    max-height: 60vh;
  }
}

/* === About & Contact: yan yana kartlar (DOĞRU YER) === */
.info-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}
.info-card {
  padding: 1.2rem 1.4rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 220px;
}
.info-card h2 {
  font-size: clamp(1.4rem, 2.2vw, 1.8rem);
  margin: 0 0 0.6rem;
}
.info-card p {
  margin: 0;
  color: var(--muted);
}
.info-actions {
  margin-top: 0.9rem;
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
}
/* Hover */
.info-card:hover {
  transform: translateY(-4px);
  border-color: color-mix(in oklab, var(--accent) 45%, var(--card-border));
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.35);
}
/* Mobil */
@media (max-width: 900px) {
  .info-grid {
    grid-template-columns: 1fr;
  }
  .info-card {
    min-height: auto;
  }
}

/* ===== Reduce motion: sadece animasyon/transition kapat ===== */
@media (prefers-reduced-motion: reduce) {
  * {
    transition: none !important;
    animation: none !important;
  }
}