:root {
  --bg: #0c0f14;
  --bg-elevated: #131822;
  --surface: #1a2130;
  --text: #e8eaef;
  --text-muted: #9aa3b2;
  --accent: #c9a227;
  --accent-soft: rgba(201, 162, 39, 0.15);
  --border: rgba(255, 255, 255, 0.08);
  --radius: 14px;
  --font-sans: "DM Sans", system-ui, sans-serif;
  --font-display: "Fraunces", Georgia, serif;
  --header-h: 78px;
  --header-h-shrunk: 58px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1.05rem;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
  overflow-x: hidden;
  -webkit-text-size-adjust: 100%;
}

body.nav-open {
  overflow: hidden;
}

img {
  max-width: 100%;
  height: auto;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -100px;
  background: var(--accent);
  color: #111;
  padding: 0.5rem 1rem;
  border-radius: 8px;
  font-weight: 600;
  z-index: 1000;
  transition: top 0.2s;
}

.skip-link:focus {
  top: 1rem;
}

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover {
  color: #e4c04a;
}

.container {
  width: min(1100px, calc(100% - 2.5rem));
  margin-inline: auto;
}

.container.narrow {
  width: min(720px, calc(100% - 2.5rem));
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(12, 15, 20, 0.78);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: background 0.25s ease, border-color 0.25s ease;
}

.site-header.is-shrunk {
  background: rgba(12, 15, 20, 0.92);
  border-bottom-color: var(--border);
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.22);
}

.header-inner {
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(1100px, calc(100% - 2.5rem));
  margin-inline: auto;
  transition: height 0.25s ease;
}

.site-header.is-shrunk .header-inner {
  height: var(--header-h-shrunk);
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  text-decoration: none;
  color: var(--accent);
  line-height: 0;
  transition: opacity 0.2s;
}

.logo:hover {
  opacity: 0.85;
  color: var(--accent);
}

.logo-mark {
  display: block;
  width: auto;
  height: 38px;
  transition: height 0.25s ease;
  filter: drop-shadow(0 0 12px rgba(201, 162, 39, 0.2));
}

.site-header.is-shrunk .logo-mark {
  height: 30px;
}

.logo-text {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.02rem;
  letter-spacing: 0.01em;
  color: var(--text);
  line-height: 1.2;
  white-space: nowrap;
  transition: font-size 0.25s ease, opacity 0.25s ease;
}

.site-header.is-shrunk .logo-text {
  font-size: 0.95rem;
}

@media (max-width: 520px) {
  .logo-text {
    display: none;
  }
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}

.site-nav a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
}

.site-nav a:hover {
  color: var(--text);
}

.site-nav .nav-cta {
  padding: 0.45rem 1rem;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  border: 1px solid rgba(201, 162, 39, 0.35);
}

.site-nav .nav-cta:hover {
  background: rgba(201, 162, 39, 0.25);
  color: #e4c04a;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface);
  cursor: pointer;
}

.nav-toggle-bar {
  display: block;
  width: 20px;
  height: 2px;
  margin-inline: auto;
  background: var(--text);
  border-radius: 1px;
  transition: transform 0.2s, opacity 0.2s;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:first-of-type {
  transform: translateY(4px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:last-of-type {
  transform: translateY(-4px) rotate(-45deg);
}

@media (max-width: 820px) {
  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: fixed;
    inset: var(--header-h) 0 0 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 1.25rem 1.5rem 2rem;
    background: var(--bg-elevated);
    border-bottom: 1px solid var(--border);
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.25s ease, opacity 0.25s ease, inset 0.25s ease;
    overflow-y: auto;
  }

  .site-header.is-shrunk .site-nav {
    inset: var(--header-h-shrunk) 0 0 0;
  }

  .site-nav.is-open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .site-nav a {
    padding: 1rem 0.25rem;
    font-size: 1.05rem;
    border-bottom: 1px solid var(--border);
  }

  .site-nav .nav-cta {
    border-bottom: 0;
    margin-top: 1rem;
    text-align: center;
    padding: 0.85rem 1.25rem;
  }
}

/* Hero */
.hero {
  position: relative;
  padding: clamp(4rem, 12vw, 7rem) 0 clamp(3.5rem, 8vw, 5rem);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 50% at 50% -20%, rgba(201, 162, 39, 0.18), transparent 55%),
    radial-gradient(ellipse 60% 40% at 100% 50%, rgba(90, 120, 200, 0.08), transparent 50%),
    var(--bg);
  pointer-events: none;
}

.hero-inner {
  position: relative;
}

.eyebrow {
  margin: 0 0 0.5rem;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-muted);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.hero h1 {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-size: clamp(2.25rem, 5vw, 3.25rem);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.lead {
  margin: 0 0 2rem;
  max-width: 36ch;
  font-size: 1.15rem;
  color: var(--text-muted);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.65rem 1.35rem;
  border-radius: 999px;
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s, color 0.2s;
}

.btn-primary {
  background: var(--accent);
  color: #141820;
  border-color: var(--accent);
}

.btn-primary:hover {
  background: #e4c04a;
  border-color: #e4c04a;
  color: #141820;
}

.btn-ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--border);
}

.btn-ghost:hover {
  border-color: var(--text-muted);
  background: var(--surface);
}

/* Sections */
.section {
  padding: clamp(3rem, 8vw, 5rem) 0;
}

.section-alt {
  background: var(--bg-elevated);
  border-block: 1px solid var(--border);
}

.section-title {
  margin: 0 0 0.75rem;
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 600;
  letter-spacing: -0.02em;
}

.section-intro {
  margin: 0 0 2rem;
  color: var(--text-muted);
  max-width: 50ch;
}

.prose {
  margin: 0 0 1rem;
  color: var(--text-muted);
}

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

code {
  font-size: 0.88em;
  padding: 0.15em 0.4em;
  border-radius: 6px;
  background: var(--surface);
  border: 1px solid var(--border);
}

/* Skills */
.skill-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.skill-card {
  margin: 0;
  padding: 1.5rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color 0.2s, transform 0.2s, background 0.2s;
}

.skill-card:hover {
  border-color: rgba(201, 162, 39, 0.35);
  transform: translateY(-2px);
}

.skill-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  margin-bottom: 1rem;
  border-radius: 12px;
  background: var(--accent-soft);
  color: var(--accent);
}

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

.skill-card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.1rem;
  font-weight: 600;
}

.skill-card p {
  margin: 0;
  font-size: 0.95rem;
  color: var(--text-muted);
}

/* Tech / Beceriler */
.tech-groups {
  display: grid;
  gap: 2.25rem;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  margin-bottom: 2.5rem;
}

.tech-group {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem 1.5rem 1.25rem;
}

.tech-group-title {
  margin: 0 0 1.25rem;
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--text);
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border);
}

.tech-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.95rem;
}

.tech-item {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.tech-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-size: 0.95rem;
}

.tech-name {
  font-weight: 500;
  color: var(--text);
}

.tech-level {
  font-family: var(--font-display);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--accent);
  font-feature-settings: "tnum";
}

.tech-bar {
  position: relative;
  height: 6px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 999px;
  overflow: hidden;
}

.tech-bar span {
  position: absolute;
  inset: 0 auto 0 0;
  display: block;
  height: 100%;
  background: linear-gradient(90deg, #c9a227 0%, #e4c04a 100%);
  border-radius: inherit;
  box-shadow: 0 0 12px rgba(201, 162, 39, 0.35);
  transform-origin: left center;
  animation: fillBar 1.1s ease-out 0.15s both;
}

@keyframes fillBar {
  from { transform: scaleX(0); }
  to { transform: scaleX(1); }
}

@media (prefers-reduced-motion: reduce) {
  .tech-bar span {
    animation: none;
  }
}

.tech-extra {
  padding: 1.5rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.tech-extra .tech-group-title {
  margin-bottom: 1rem;
}

.tag-cloud {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tag-cloud li {
  padding: 0.35rem 0.8rem;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  border-radius: 999px;
  transition: border-color 0.2s, color 0.2s, background 0.2s;
}

.tag-cloud li:hover {
  border-color: rgba(201, 162, 39, 0.4);
  color: var(--accent);
  background: var(--accent-soft);
}

/* Projects */
.project-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.project-card {
  padding: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.project-cover {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  aspect-ratio: 16 / 10;
  padding: 1.5rem;
  overflow: hidden;
  text-decoration: none;
  color: #fff;
  border-bottom: 1px solid var(--border);
  isolation: isolate;
  transition: transform 0.3s ease;
}

.project-cover::before,
.project-cover::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  transition: opacity 0.3s ease, transform 0.4s ease;
}

.project-cover::after {
  background: linear-gradient(to top, rgba(0, 0, 0, 0.45) 0%, transparent 55%);
  opacity: 0.9;
}

.project-cover:hover::before {
  transform: scale(1.04);
}

.project-cover-kicker {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 0.35rem;
}

.project-cover-title {
  display: block;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.75rem, 4vw, 2.15rem);
  letter-spacing: 0.08em;
  line-height: 1;
  color: #fff;
  text-shadow: 0 2px 18px rgba(0, 0, 0, 0.35);
}

.project-cover-domain {
  margin-top: 0.5rem;
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: rgba(255, 255, 255, 0.7);
}

.project-cover-namser::before {
  background:
    radial-gradient(ellipse at 75% 20%, rgba(201, 162, 39, 0.22), transparent 55%),
    radial-gradient(ellipse at 10% 90%, rgba(255, 255, 255, 0.05), transparent 50%),
    linear-gradient(135deg, #14100a 0%, #261c0e 55%, #3a2a14 100%);
}

.project-cover-namser .project-cover-kicker {
  color: rgba(233, 200, 120, 0.9);
}

.project-cover-lucchetto::before {
  background:
    radial-gradient(ellipse at 20% 15%, rgba(201, 162, 39, 0.3), transparent 55%),
    radial-gradient(ellipse at 85% 85%, rgba(90, 130, 200, 0.18), transparent 55%),
    linear-gradient(140deg, #0e1420 0%, #172134 55%, #23324f 100%);
}

.project-cover-lucchetto .project-cover-title {
  color: var(--accent);
  text-shadow: 0 2px 18px rgba(201, 162, 39, 0.25);
}

.project-cover-lucchetto .project-cover-kicker {
  color: rgba(201, 162, 39, 0.85);
}

.project-cover-oztopuz::before {
  background:
    radial-gradient(ellipse at 80% 15%, rgba(255, 170, 60, 0.22), transparent 55%),
    radial-gradient(ellipse at 15% 85%, rgba(255, 255, 255, 0.06), transparent 50%),
    linear-gradient(135deg, #1c120a 0%, #3a2512 55%, #5e3a18 100%);
}

.project-cover-oztopuz .project-cover-kicker {
  color: rgba(255, 200, 140, 0.9);
}

.project-tag {
  display: inline-block;
  margin: 1.1rem 1.25rem 0;
  padding: 0.2rem 0.65rem;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid rgba(201, 162, 39, 0.3);
  border-radius: 999px;
}

.project-card h3 {
  margin: 0;
  padding: 0.55rem 1.25rem 0.35rem;
  font-size: 1.15rem;
}

.project-card p {
  margin: 0;
  padding: 0 1.25rem 1rem;
  flex: 1;
  font-size: 0.95rem;
  color: var(--text-muted);
}

.project-link {
  padding: 0 1.25rem 1.25rem;
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
}

.project-link:hover {
  text-decoration: underline;
}

/* CTA / Contact */
.section-cta {
  text-align: center;
}

.cta-inner .section-title {
  margin-bottom: 0.5rem;
}

.contact-methods {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  margin-top: 2rem;
  text-align: left;
}

.contact-card {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-rows: auto auto;
  align-items: center;
  column-gap: 1rem;
  row-gap: 0.1rem;
  padding: 1.25rem 1.5rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-decoration: none;
  color: var(--text);
  transition: border-color 0.2s, transform 0.2s, background 0.2s;
}

.contact-card:hover {
  border-color: rgba(201, 162, 39, 0.4);
  transform: translateY(-2px);
  color: var(--text);
}

.contact-icon {
  grid-row: 1 / span 2;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border-radius: 12px;
  background: var(--accent-soft);
  color: var(--accent);
}

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

.contact-label {
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.contact-value {
  font-size: 1.02rem;
  font-weight: 600;
  color: var(--text);
}

/* Footer */
.site-footer {
  padding: 2rem 0;
  border-top: 1px solid var(--border);
  background: var(--bg);
}

.footer-inner {
  text-align: center;
}

.site-footer p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.footer-note {
  margin-top: 0.5rem !important;
  font-size: 0.8rem;
  opacity: 0.85;
}

/* Mobile refinements */
@media (max-width: 640px) {
  body {
    font-size: 1rem;
  }

  .container,
  .header-inner {
    width: min(1100px, calc(100% - 2rem));
  }

  .container.narrow {
    width: min(720px, calc(100% - 2rem));
  }

  .hero {
    padding: clamp(3rem, 10vw, 5rem) 0 clamp(2.5rem, 6vw, 3.5rem);
  }

  .hero h1 {
    font-size: clamp(2rem, 9vw, 2.75rem);
  }

  .lead {
    font-size: 1.05rem;
  }

  .hero-actions .btn {
    flex: 1 1 auto;
    min-width: 0;
    padding: 0.75rem 1rem;
  }

  .section {
    padding: clamp(2.5rem, 7vw, 4rem) 0;
  }

  .section-title {
    font-size: clamp(1.6rem, 6vw, 2rem);
  }

  .skill-grid,
  .project-grid {
    grid-template-columns: 1fr;
  }

  .skill-card {
    padding: 1.25rem;
  }

  .contact-card {
    padding: 1rem 1.1rem;
    column-gap: 0.85rem;
  }

  .contact-value {
    font-size: 0.95rem;
    word-break: break-word;
  }

  .site-nav a,
  .btn,
  .contact-card,
  .project-link {
    min-height: 44px;
  }
}

@media (max-width: 380px) {
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-actions .btn {
    width: 100%;
  }
}