/* =========================================================
   Indrajith Bandara — Portfolio
   Design tokens: black/dark-gray base, terminal-green accent
   Display: Space Grotesk · Body: Inter · Mono: JetBrains Mono
   ========================================================= */

:root {
  /* colors */
  --bg: #0a0d0c;
  --bg-alt: #0d1110;
  --surface: #121615;
  --surface-2: #181d1c;
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.14);
  --text: #edf2f0;
  --text-dim: #93a39e;
  --text-faint: #5d6b67;
  --accent: #00e08f;
  --accent-dim: #0a8f5f;
  --accent-soft: #7fe9bf;
  --accent-glow: rgba(0, 224, 143, 0.18);
  --danger: #ff5d5d;

  /* type */
  --font-display: "Space Grotesk", sans-serif;
  --font-body: "Inter", sans-serif;
  --font-mono: "JetBrains Mono", monospace;

  /* layout */
  --container: 1180px;
  --radius: 10px;
  --radius-lg: 16px;
  --transition: 0.25s ease;
}

/* ---------- light theme override ---------- */
:root[data-theme="light"] {
  --bg: #f6f8f7;
  --bg-alt: #eef2f0;
  --surface: #ffffff;
  --surface-2: #eef2f0;
  --border: rgba(10, 20, 17, 0.08);
  --border-strong: rgba(10, 20, 17, 0.14);
  --text: #0e1412;
  --text-dim: #4a5751;
  --text-faint: #7c8a84;
  --accent: #07a363;
  --accent-dim: #06794a;
  --accent-soft: #058a55;
  --accent-glow: rgba(7, 163, 99, 0.14);
}

/* ---------- reset ---------- */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  transition: background var(--transition), color var(--transition);
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
input, textarea { font-family: inherit; }

::selection { background: var(--accent); color: #04130c; }

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

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* faint grid texture across whole page */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
  z-index: 0;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, black 0%, transparent 70%);
}

/* ---------- typography helpers ---------- */
.text-accent { color: var(--accent); }
.text-accent-soft { color: var(--accent-soft); }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
}
.eyebrow__dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent);
  animation: pulse 1.6s ease-in-out infinite;
}
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: 0.35; } }

.section__title {
  font-family: var(--font-display);
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 600;
  letter-spacing: -0.01em;
  margin-bottom: 18px;
}
.section__lede {
  color: var(--text-dim);
  max-width: 600px;
  margin-bottom: 40px;
}

.chip {
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--accent-soft);
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  padding: 6px 14px;
  background: var(--surface);
}

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 500;
  padding: 13px 24px;
  border-radius: var(--radius);
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition), border-color var(--transition);
  white-space: nowrap;
}
.btn--solid {
  background: var(--accent);
  color: #04130c;
}
.btn--solid:hover { transform: translateY(-2px); box-shadow: 0 8px 24px var(--accent-glow); }
.btn--ghost {
  border: 1px solid var(--border-strong);
  color: var(--text);
}
.btn--ghost:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); }
.btn--full { width: 100%; justify-content: center; }

/* =========================================================
   PRELOADER
   ========================================================= */
.preloader {
  position: fixed; inset: 0; z-index: 999;
  background: var(--bg);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-mono);
  font-size: 28px; letter-spacing: 0.05em;
  transition: opacity 0.5s ease, visibility 0.5s ease;
}
.preloader__text { color: var(--accent); margin: 0 6px; }
.preloader__bracket { color: var(--text-faint); }
.preloader.is-hidden { opacity: 0; visibility: hidden; pointer-events: none; }

/* =========================================================
   NAV
   ========================================================= */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(10, 13, 12, 0.55);
  backdrop-filter: blur(14px) saturate(140%);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), background var(--transition);
}
.nav.is-scrolled { border-bottom-color: var(--border); background: rgba(10, 13, 12, 0.85); }

.nav__inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 72px;
}
.nav__logo {
  font-family: var(--font-mono);
  font-size: 18px; font-weight: 600;
  letter-spacing: 0.02em;
}
.nav__logo-bracket { color: var(--accent); }

.nav__links { display: flex; align-items: center; gap: 28px; }
.nav__link {
  font-family: var(--font-mono);
  font-size: 13.5px;
  color: var(--text-dim);
  position: relative;
  transition: color var(--transition);
}
.nav__link::after {
  content: ""; position: absolute; left: 0; bottom: -6px;
  width: 0; height: 1px; background: var(--accent);
  transition: width var(--transition);
}
.nav__link:hover { color: var(--text); }
.nav__link:hover::after { width: 100%; }
.nav__link--cta {
  color: var(--accent);
  border: 1px solid var(--accent-dim);
  border-radius: 6px;
  padding: 7px 14px;
}
.nav__link--cta::after { display: none; }
.nav__link--cta:hover { background: var(--accent-glow); }

.nav__toggle {
  display: none;
  flex-direction: column; gap: 5px;
  width: 28px; height: 20px;
}
.nav__toggle span { display: block; height: 2px; width: 100%; background: var(--text); border-radius: 2px; transition: var(--transition); }

.nav__actions { display: flex; align-items: center; gap: 14px; }
.theme-toggle {
  width: 36px; height: 36px;
  border: 1px solid var(--border-strong);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: var(--accent);
  transition: var(--transition);
}
.theme-toggle:hover { border-color: var(--accent); }
.theme-toggle__moon { display: none; }
:root[data-theme="light"] .theme-toggle__sun { display: none; }
:root[data-theme="light"] .theme-toggle__moon { display: block; }

/* =========================================================
   HERO
   ========================================================= */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex; align-items: center;
  padding: 120px 0 80px;
  overflow: hidden;
}
.hero__net {
  position: absolute; inset: 0; z-index: 0;
  opacity: 0.6;
}
.hero__grid {
  position: relative; z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 56px;
  align-items: center;
}

.eyebrow { display: flex; }

.hero__title {
  font-family: var(--font-display);
  font-size: clamp(40px, 6.4vw, 68px);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.01em;
  margin-bottom: 18px;
}
.hero__subtitle {
  font-size: 16px;
  color: var(--text-dim);
  margin-bottom: 16px;
}
.hero__mission {
  font-family: var(--font-mono);
  font-size: 13.5px;
  color: var(--accent-soft);
  border-left: 2px solid var(--accent-dim);
  padding-left: 14px;
  margin-bottom: 34px;
  max-width: 480px;
}
.hero__cta { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 32px; }
.hero__socials { display: flex; gap: 14px; }

.social-icon {
  display: flex; align-items: center; justify-content: center;
  width: 38px; height: 38px;
  border: 1px solid var(--border-strong);
  border-radius: 50%;
  color: var(--text-dim);
  transition: var(--transition);
}
.social-icon:hover { color: var(--accent); border-color: var(--accent); transform: translateY(-2px); }

/* terminal card */
.terminal {
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 30px 60px -20px rgba(0,0,0,0.6), 0 0 0 1px rgba(0,224,143,0.04);
}
.terminal__bar {
  display: flex; align-items: center; gap: 8px;
  padding: 12px 16px;
  background: var(--surface-2);
  border-bottom: 1px solid var(--border);
}
.terminal__dot { width: 10px; height: 10px; border-radius: 50%; }
.terminal__dot--r { background: #ff5f57; }
.terminal__dot--y { background: #febc2e; }
.terminal__dot--g { background: #28c840; }
.terminal__title {
  margin-left: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-faint);
}
.terminal__body {
  padding: 22px 20px 28px;
  font-family: var(--font-mono);
  font-size: 14px;
  min-height: 220px;
}
.terminal__line { color: var(--text-dim); margin-bottom: 4px; }
.terminal__prompt { color: var(--accent); margin-right: 6px; }
.terminal__out {
  color: var(--text);
  margin: 4px 0 16px 0;
  min-height: 1.4em;
  font-weight: 500;
}
.terminal__out--role { color: var(--accent-soft); font-weight: 400; }
.terminal__cursor { animation: blink 1s step-end infinite; color: var(--accent); }
@keyframes blink { 50% { opacity: 0; } }

.scroll-cue {
  position: absolute; bottom: 28px; left: 50%; transform: translateX(-50%);
  width: 26px; height: 42px;
  border: 1px solid var(--border-strong);
  border-radius: 14px;
  display: flex; justify-content: center; padding-top: 8px;
  z-index: 1;
}
.scroll-cue span {
  width: 4px; height: 8px; border-radius: 2px; background: var(--accent);
  animation: scrollcue 1.6s ease infinite;
}
@keyframes scrollcue { 0% { opacity: 1; transform: translateY(0); } 70% { opacity: 0; transform: translateY(14px); } 100% { opacity: 0; } }

/* =========================================================
   SECTIONS (generic)
   ========================================================= */
.section { position: relative; padding: 110px 0; z-index: 1; }
.section--alt { background: var(--bg-alt); }

/* ---------- ABOUT ---------- */
.about__grid {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 56px;
  align-items: start;
}
.photo-frame {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-strong);
  aspect-ratio: 4/5;
  background: var(--surface);
}
.photo-frame img { width: 100%; height: 100%; object-fit: cover; }
.photo-frame__tag {
  position: absolute; bottom: 12px; left: 12px;
  font-family: var(--font-mono); font-size: 11px;
  background: rgba(10,13,12,0.7);
  color: var(--accent);
  padding: 4px 10px; border-radius: 6px;
  border: 1px solid var(--border-strong);
}
.about__copy p { color: var(--text-dim); margin-bottom: 16px; }
.about__roles { display: flex; flex-wrap: wrap; gap: 10px; margin: 26px 0 36px; }

.about__stats { display: flex; gap: 40px; flex-wrap: wrap; }
.stat { display: flex; flex-direction: column; }
.stat__num, .stat__plus {
  font-family: var(--font-display);
  font-size: 34px; font-weight: 700; color: var(--accent);
  display: inline;
}
.stat__label { font-family: var(--font-mono); font-size: 12px; color: var(--text-faint); margin-top: 4px; }

/* ---------- SKILLS ---------- */
.skills__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}
.skills__col-title {
  font-family: var(--font-mono);
  font-size: 13px; letter-spacing: 0.04em;
  color: var(--text-faint);
  text-transform: uppercase;
  margin-bottom: 22px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
}
.skill { margin-bottom: 18px; }
.skill__head {
  display: flex; justify-content: space-between;
  font-size: 14px; margin-bottom: 8px;
}
.skill__pct { font-family: var(--font-mono); color: var(--accent-soft); font-size: 12.5px; }
.skill__bar {
  height: 6px; border-radius: 4px;
  background: var(--surface-2);
  overflow: hidden;
}
.skill__fill {
  display: block; height: 100%; width: 0%;
  border-radius: 4px;
  background: linear-gradient(90deg, var(--accent-dim), var(--accent));
  box-shadow: 0 0 12px var(--accent-glow);
  transition: width 1.2s cubic-bezier(0.16, 1, 0.3, 1);
}

/* ---------- TIMELINE ---------- */
.timeline { position: relative; max-width: 760px; margin: 0 auto; padding-left: 28px; }
.timeline::before {
  content: ""; position: absolute; left: 5px; top: 6px; bottom: 6px;
  width: 1px; background: var(--border-strong);
}
.timeline__item { position: relative; margin-bottom: 34px; }
.timeline__item:last-child { margin-bottom: 0; }
.timeline__dot {
  position: absolute; left: -28px; top: 6px;
  width: 11px; height: 11px; border-radius: 50%;
  background: var(--bg); border: 2px solid var(--accent);
  box-shadow: 0 0 0 4px var(--bg);
}
.timeline__card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 26px;
}
.timeline__date {
  font-family: var(--font-mono); font-size: 11.5px;
  color: var(--accent); letter-spacing: 0.04em;
}
.timeline__card h3 { font-family: var(--font-display); font-size: 19px; margin: 8px 0 4px; }
.timeline__org { color: var(--text-faint); font-size: 13.5px; margin-bottom: 10px; }
.timeline__card p:last-child { color: var(--text-dim); font-size: 14.5px; }
.timeline--compact { max-width: 100%; }

/* ---------- CERTIFICATIONS ---------- */
.cert__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 22px;
  margin-bottom: 56px;
}
.cert-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
  transition: border-color var(--transition), transform var(--transition);
}
.cert-card:hover { border-color: var(--accent-dim); transform: translateY(-4px); }
.cert-card__icon { color: var(--accent); font-size: 18px; }
.cert-card h3 { font-family: var(--font-display); font-size: 16.5px; margin: 12px 0 8px; }
.cert-card p { color: var(--text-dim); font-size: 13.5px; }

.partners__label {
  font-family: var(--font-mono); font-size: 12.5px;
  color: var(--text-faint); margin-bottom: 18px;
}
.partners__grid { display: flex; flex-wrap: wrap; gap: 12px; }
.partner-pill {
  font-family: var(--font-mono); font-size: 12.5px;
  border: 1px solid var(--border-strong);
  border-radius: 999px; padding: 8px 16px;
  color: var(--text-dim);
  transition: var(--transition);
}
.partner-pill:hover { color: var(--accent); border-color: var(--accent); }

/* ---------- BADGES ---------- */
.badges__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 16px;
}
.badge-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 12px;
  display: flex; flex-direction: column; align-items: center; gap: 10px;
  text-align: center;
  font-family: var(--font-mono); font-size: 12.5px;
  color: var(--text-dim);
  transition: var(--transition);
}
.badge-card:hover { border-color: var(--accent-dim); transform: translateY(-3px); color: var(--text); }
.badge-card__glyph { font-size: 26px; }

/* ---------- PROJECTS ---------- */
.projects__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
  gap: 22px;
}
.project-card {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 26px;
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}
.project-card:hover {
  transform: translateY(-6px);
  border-color: var(--accent-dim);
  box-shadow: 0 20px 40px -20px rgba(0,224,143,0.12);
}
.project-card__top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 18px; }
.project-card__icon { font-size: 22px; }
.project-card__links { display: flex; gap: 10px; }
.project-card__links a {
  width: 30px; height: 30px; border-radius: 8px;
  border: 1px solid var(--border-strong);
  display: flex; align-items: center; justify-content: center;
  color: var(--text-dim); font-size: 13px;
  transition: var(--transition);
}
.project-card__links a:hover { color: var(--accent); border-color: var(--accent); }
.project-card h3 { font-family: var(--font-display); font-size: 18px; margin-bottom: 8px; }
.project-card p { color: var(--text-dim); font-size: 14px; margin-bottom: 18px; }
.project-card__tags { display: flex; gap: 8px; flex-wrap: wrap; }
.project-card__tags span {
  font-family: var(--font-mono); font-size: 11px;
  color: var(--accent-soft);
  border: 1px solid var(--border);
  border-radius: 999px; padding: 4px 10px;
}

/* ---------- TEACHING ---------- */
.teaching__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 22px;
}
.teaching-card {
  border-left: 2px solid var(--accent-dim);
  padding: 6px 0 6px 22px;
}
.teaching-card h3 { font-family: var(--font-display); font-size: 17px; margin-bottom: 8px; }
.teaching-card p { color: var(--text-dim); font-size: 14px; }

/* ---------- ACHIEVEMENTS ---------- */
.achieve__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 22px;
}
.achieve-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
}
.achieve-card__num {
  display: block;
  font-family: var(--font-display);
  font-size: 30px; font-weight: 700;
  color: var(--accent);
  margin-bottom: 10px;
}
.achieve-card p { color: var(--text-dim); font-size: 14px; }

/* ---------- TESTIMONIALS ---------- */
.testimonials__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 22px;
}
.testimonial-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
}
.testimonial-card p { color: var(--text-dim); font-size: 14.5px; font-style: italic; margin-bottom: 16px; }
.testimonial-card footer { font-family: var(--font-mono); font-size: 12.5px; color: var(--accent-soft); }

/* ---------- CONTACT ---------- */
.contact__grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 40px;
}
.contact-form {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
}
.form-row { margin-bottom: 18px; }
.form-row label {
  display: block; font-family: var(--font-mono); font-size: 12.5px;
  color: var(--text-faint); margin-bottom: 8px;
}
.form-row input, .form-row textarea {
  width: 100%;
  background: var(--surface-2);
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  padding: 12px 14px;
  color: var(--text);
  font-size: 14px;
  transition: border-color var(--transition);
  resize: vertical;
}
.form-row input:focus, .form-row textarea:focus { border-color: var(--accent); outline: none; }
.form-note { margin-top: 14px; font-family: var(--font-mono); font-size: 13px; color: var(--accent-soft); min-height: 1.2em; }

.contact-info { display: flex; flex-direction: column; gap: 14px; }
.contact-link {
  display: flex; align-items: center; gap: 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  font-size: 14px;
  transition: var(--transition);
}
.contact-link:hover { border-color: var(--accent-dim); transform: translateX(4px); }
.contact-link__icon {
  width: 38px; height: 38px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%; border: 1px solid var(--border-strong);
  color: var(--accent); font-family: var(--font-mono); font-size: 13px;
}
.contact-link strong { font-family: var(--font-display); font-size: 14.5px; }

/* ---------- GITHUB STATS ---------- */
.ghstats__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.ghstats__img {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
}
.ghstats__img--wide { grid-column: 1 / -1; }
.ghstats__note {
  margin-top: 18px;
  font-family: var(--font-mono); font-size: 12px;
  color: var(--text-faint);
}

/* ---------- GALLERY ---------- */
.gallery__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 18px;
}
.gallery-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  aspect-ratio: 4/3;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 10px;
  transition: var(--transition);
}
.gallery-item span { font-size: 30px; }
.gallery-item figcaption { font-family: var(--font-mono); font-size: 12px; color: var(--text-faint); text-align: center; padding: 0 10px; }
.gallery-item:hover { border-color: var(--accent-dim); transform: translateY(-3px); }

/* ---------- BLOG ---------- */
.blog__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 22px;
}
.blog-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
  transition: var(--transition);
}
.blog-card:hover { border-color: var(--accent-dim); transform: translateY(-4px); }
.blog-card__tag {
  font-family: var(--font-mono); font-size: 11px;
  color: var(--accent-soft);
  border: 1px solid var(--border);
  border-radius: 999px; padding: 4px 10px;
  display: inline-block; margin-bottom: 14px;
}
.blog-card h3 { font-family: var(--font-display); font-size: 17px; margin-bottom: 8px; }
.blog-card p { color: var(--text-dim); font-size: 14px; }

/* ---------- VISITOR BADGE ---------- */
.visitor-badge { margin: 0 auto 18px; display: block; opacity: 0.85; }

/* =========================================================
   FOOTER
   ========================================================= */
.footer { padding: 64px 0 36px; text-align: center; border-top: 1px solid var(--border); position: relative; z-index: 1; }
.footer__tagline { color: var(--text-dim); max-width: 460px; margin: 16px auto 22px; font-size: 14px; }
.footer__socials { display: flex; justify-content: center; gap: 14px; margin-bottom: 26px; }
.footer__copy { color: var(--text-faint); font-size: 12.5px; font-family: var(--font-mono); }

.back-to-top {
  position: fixed; bottom: 26px; right: 26px; z-index: 90;
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--surface);
  border: 1px solid var(--border-strong);
  color: var(--accent);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; visibility: hidden; transform: translateY(10px);
  transition: var(--transition);
}
.back-to-top.is-visible { opacity: 1; visibility: visible; transform: translateY(0); }
.back-to-top:hover { background: var(--accent); color: #04130c; }

/* =========================================================
   SCROLL-REVEAL ANIMATION
   ========================================================= */
[data-aos] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
[data-aos].is-visible { opacity: 1; transform: translateY(0); }

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width: 980px) {
  .hero__grid { grid-template-columns: 1fr; }
  .hero__terminal { order: 2; }
  .about__grid { grid-template-columns: 1fr; }
  .photo-frame { max-width: 320px; }
  .skills__grid { grid-template-columns: repeat(2, 1fr); }
  .contact__grid { grid-template-columns: 1fr; }
}

@media (max-width: 760px) {
  .ghstats__grid { grid-template-columns: 1fr; }
  .nav__links {
    position: absolute; top: 72px; left: 0; right: 0;
    background: rgba(10,13,12,0.97);
    flex-direction: column; align-items: flex-start;
    gap: 0; padding: 8px 24px 18px;
    border-bottom: 1px solid var(--border);
    transform: translateY(-8px);
    opacity: 0; visibility: hidden;
    transition: var(--transition);
  }
  .nav__links.is-open { opacity: 1; visibility: visible; transform: translateY(0); }
  .nav__link { width: 100%; padding: 12px 0; border-bottom: 1px solid var(--border); }
  .nav__link--cta { margin-top: 10px; text-align: center; border-bottom: 1px solid var(--accent-dim); }
  .nav__toggle { display: flex; }
  .skills__grid { grid-template-columns: 1fr; }
  .hero { padding-top: 100px; }
}

@media (max-width: 480px) {
  .hero__cta { flex-direction: column; align-items: stretch; }
  .btn { justify-content: center; }
}