/* ===== Kodche Website — Design System ===== */
/* Tokens mirror lib/core/theme/app_theme.dart */

:root {
  --color-primary: #00ADD8;
  --color-primary-dark: #0089B3;
  --color-primary-glow: rgba(0, 173, 216, 0.35);
  --color-navy: #0A2540;
  --color-accent: #CE3262;
  --color-accent-glow: rgba(206, 50, 98, 0.3);

  --color-bg: #0B1220;
  --color-surface: #111B2E;
  --color-surface-2: #1A2540;
  --color-text: #E2E8F0;
  --color-text-muted: #94A3B8;
  --color-border: rgba(148, 163, 184, 0.15);

  --token-keyword: #00ADD8;
  --token-string: #A3E635;
  --token-comment: #64748B;
  --token-fn: #FB923C;
  --token-num: #F472B6;

  --radius-s: 8px;
  --radius-m: 14px;
  --radius-l: 22px;

  --sp-xs: 4px;
  --sp-s: 8px;
  --sp-m: 16px;
  --sp-l: 24px;
  --sp-xl: 32px;
  --sp-2xl: 48px;
  --sp-3xl: 64px;

  --font-family: 'Vazirmatn', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, 'SFMono-Regular', Menlo, monospace;

  --t-fast: 0.2s ease;
  --t-norm: 0.3s ease;
  --t-slow: 0.5s ease;

  --max-width: 1200px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

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

body {
  font-family: var(--font-family);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  overflow-x: hidden;
  min-height: 100vh;
  position: relative;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 50% at 50% 0%, rgba(0, 173, 216, 0.12), transparent 60%),
    radial-gradient(ellipse 60% 50% at 80% 80%, rgba(206, 50, 98, 0.08), transparent 60%);
  pointer-events: none;
  z-index: 0;
}

a { color: var(--color-primary); text-decoration: none; transition: color var(--t-fast); }
a:hover { color: #5FD4F2; }

img, svg { max-width: 100%; display: block; }

/* ===== Layout ===== */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--sp-l);
  position: relative;
  z-index: 1;
}

section { padding: var(--sp-3xl) 0; position: relative; z-index: 1; }

.section-title {
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 800;
  margin-bottom: var(--sp-s);
  text-align: center;
}
.section-title .accent { color: var(--color-primary); }

.section-subtitle {
  text-align: center;
  color: var(--color-text-muted);
  margin-bottom: var(--sp-2xl);
  font-size: 1rem;
}

/* ===== Typography ===== */
h1, h2, h3, h4 { font-weight: 700; line-height: 1.3; }

.text-accent { color: var(--color-accent); }
.text-primary { color: var(--color-primary); }
.text-muted { color: var(--color-text-muted); }

/* ===== Navbar ===== */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(11, 18, 32, 0.7);
  backdrop-filter: saturate(180%) blur(16px);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
  border-bottom: 1px solid var(--color-border);
  transition: background var(--t-norm);
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--sp-m) var(--sp-l);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-l);
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: var(--sp-s);
  font-weight: 800;
  font-size: 1.2rem;
  color: var(--color-text);
}

.nav-brand img {
  width: 36px; height: 36px;
  border-radius: var(--radius-s);
  box-shadow: 0 4px 16px var(--color-primary-glow);
}

.nav-links {
  display: flex;
  gap: var(--sp-l);
  list-style: none;
}

.nav-links a {
  color: var(--color-text-muted);
  font-weight: 500;
  font-size: 0.95rem;
  position: relative;
  padding: var(--sp-xs) 0;
}

.nav-links a:hover,
.nav-links a.active { color: var(--color-text); }

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px; right: 0;
  width: 0; height: 2px;
  background: var(--color-primary);
  transition: width var(--t-norm);
}
.nav-links a:hover::after,
.nav-links a.active::after { width: 100%; }

.nav-toggle {
  display: none;
  background: none;
  border: 0;
  color: var(--color-text);
  cursor: pointer;
  padding: var(--sp-s);
}

/* Language toggle button */
.lang-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 42px;
  height: 36px;
  padding: 0 12px;
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-s);
  color: var(--color-text);
  font: 600 0.85rem/1 var(--font-family);
  cursor: pointer;
  transition: var(--t-norm);
}
.lang-toggle:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: rgba(0, 173, 216, 0.06);
}

/* Skip link for keyboard / screen-reader users (a11y + SEO) */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  right: 0;
  margin: 0 auto;
  width: max-content;
  padding: 8px 16px;
  background: var(--color-primary);
  color: #fff;
  border-radius: 0 0 var(--radius-s) var(--radius-s);
  z-index: 1000;
  font-weight: 600;
  text-decoration: none;
  transition: top 0.2s ease;
}
.skip-link:focus {
  top: 0;
  outline: 2px solid var(--color-text);
  outline-offset: 2px;
}

@media (max-width: 768px) {
  .nav-links {
    position: absolute;
    top: 100%; right: 0; left: 0;
    flex-direction: column;
    background: var(--color-surface);
    padding: var(--sp-l);
    gap: var(--sp-m);
    border-bottom: 1px solid var(--color-border);
    transform: translateY(-10px);
    opacity: 0;
    pointer-events: none;
    transition: var(--t-norm);
  }
  .nav-links.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .nav-toggle { display: block; }
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-s);
  padding: 12px 24px;
  border-radius: var(--radius-s);
  font-family: inherit;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  border: 0;
  transition: transform var(--t-fast), box-shadow var(--t-fast), background var(--t-fast);
  text-decoration: none;
}

.btn-primary {
  background: var(--color-primary);
  color: #001218;
  box-shadow: 0 8px 24px var(--color-primary-glow);
}
.btn-primary:hover {
  transform: translateY(-2px);
  background: #5FD4F2;
  color: #001218;
  box-shadow: 0 12px 32px var(--color-primary-glow);
}

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

.btn-accent {
  background: var(--color-accent);
  color: #fff;
  box-shadow: 0 8px 24px var(--color-accent-glow);
}
.btn-accent:hover {
  transform: translateY(-2px);
  filter: brightness(1.1);
}

/* ===== Store buttons (Bazaar / Myket) ===== */
.store-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-m);
  margin-top: var(--sp-l);
}

.btn-store {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-m);
  padding: 12px 22px;
  border-radius: var(--radius-m);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  text-decoration: none;
  transition: var(--t-norm);
  position: relative;
  overflow: hidden;
}

.btn-store::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent 0%, rgba(255,255,255,0.06) 50%, transparent 100%);
  transform: translateX(-100%);
  transition: transform 0.6s;
}
.btn-store:hover::before { transform: translateX(100%); }

.btn-store:hover {
  transform: translateY(-2px);
  border-color: var(--color-primary);
  box-shadow: 0 12px 32px rgba(0,0,0,0.4);
}

.btn-store .store-logo {
  width: 36px; height: 36px;
  display: grid; place-items: center;
  border-radius: var(--radius-s);
  font-weight: 800;
  flex-shrink: 0;
}
.btn-store.bazaar .store-logo { background: #51B863; color: #fff; }
.btn-store.myket .store-logo { background: #00C853; color: #fff; }

.btn-store .store-meta {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  line-height: 1.3;
}
.btn-store .store-meta small { color: var(--color-text-muted); font-size: 0.75rem; }
.btn-store .store-meta strong { font-size: 1rem; font-weight: 700; }

/* ===== Hero ===== */
.hero {
  padding: calc(var(--sp-3xl) + 80px) 0 var(--sp-3xl);
  position: relative;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-2xl);
  align-items: center;
}

@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; }
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-s);
  padding: 6px 14px;
  background: rgba(0, 173, 216, 0.1);
  border: 1px solid rgba(0, 173, 216, 0.3);
  color: var(--color-primary);
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: var(--sp-l);
}

.hero-eyebrow .dot {
  width: 8px; height: 8px;
  background: var(--color-primary);
  border-radius: 50%;
  box-shadow: 0 0 12px var(--color-primary);
  animation: pulse 2s ease-in-out infinite;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: var(--sp-m);
}
.hero h1 .gradient {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero p.lead {
  font-size: 1.1rem;
  color: var(--color-text-muted);
  margin-bottom: var(--sp-l);
  max-width: 540px;
}

/* Code window in hero */
.code-window {
  background: linear-gradient(180deg, #0E1626 0%, #0A1120 100%);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-l);
  overflow: hidden;
  box-shadow:
    0 30px 60px rgba(0, 0, 0, 0.4),
    0 0 0 1px rgba(0, 173, 216, 0.1),
    0 0 60px rgba(0, 173, 216, 0.08);
  font-family: var(--font-mono);
  direction: ltr;
  text-align: left;
  position: relative;
}

.code-window::after {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: var(--radius-l);
  padding: 1px;
  background: linear-gradient(135deg, rgba(0, 173, 216, 0.4), transparent 50%, rgba(206, 50, 98, 0.2));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}

.window-chrome {
  display: flex;
  align-items: center;
  gap: var(--sp-s);
  padding: 12px 16px;
  border-bottom: 1px solid var(--color-border);
  background: rgba(0, 0, 0, 0.2);
}
.window-chrome .dot {
  width: 12px; height: 12px;
  border-radius: 50%;
  display: inline-block;
}
.window-chrome .dot.r { background: #FF5F57; }
.window-chrome .dot.y { background: #FEBC2E; }
.window-chrome .dot.g { background: #28C840; }
.window-chrome .file {
  margin-right: auto;
  margin-left: 0;
  color: var(--color-text-muted);
  font-size: 0.85rem;
  font-family: var(--font-mono);
}

.code-content {
  padding: var(--sp-l);
  font-size: 0.92rem;
  line-height: 1.75;
  color: var(--color-text);
  height: 280px;
  max-height: 280px;
  overflow: hidden;
  white-space: pre-wrap;
  word-break: break-word;
}

.tk-keyword { color: var(--token-keyword); font-weight: 600; }
.tk-string { color: var(--token-string); }
.tk-comment { color: var(--token-comment); font-style: italic; }
.tk-fn { color: var(--token-fn); }
.tk-num { color: var(--token-num); }
.tk-op { color: #94A3B8; }

.cursor {
  display: inline-block;
  width: 8px;
  height: 1.1em;
  background: var(--color-primary);
  vertical-align: text-bottom;
  margin-right: 2px;
  animation: blink 1s steps(1) infinite;
}

@keyframes blink {
  50% { opacity: 0; }
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(1.2); }
}

/* Floating background characters */
.bg-particles {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  z-index: 0;
}

.bg-particles span {
  position: absolute;
  font-family: var(--font-mono);
  color: rgba(0, 173, 216, 0.15);
  font-size: 1rem;
  user-select: none;
  animation: float linear infinite;
}

@keyframes float {
  0% { transform: translateY(110vh) rotate(0deg); opacity: 0; }
  10% { opacity: 1; }
  90% { opacity: 1; }
  100% { transform: translateY(-10vh) rotate(360deg); opacity: 0; }
}

/* ===== Feature Cards ===== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--sp-l);
}

.feature-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-m);
  padding: var(--sp-l);
  transition: var(--t-norm);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0; right: 0;
  width: 120px; height: 120px;
  background: radial-gradient(circle, var(--color-primary-glow), transparent 70%);
  opacity: 0;
  transition: opacity var(--t-norm);
  pointer-events: none;
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 173, 216, 0.4);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}
.feature-card:hover::before { opacity: 1; }

.feature-icon {
  width: 48px; height: 48px;
  display: grid; place-items: center;
  background: rgba(0, 173, 216, 0.12);
  color: var(--color-primary);
  border-radius: var(--radius-s);
  margin-bottom: var(--sp-m);
  font-size: 1.4rem;
}

.feature-card h3 {
  font-size: 1.1rem;
  margin-bottom: var(--sp-s);
}
.feature-card p {
  color: var(--color-text-muted);
  font-size: 0.92rem;
  line-height: 1.7;
}

/* ===== Books ===== */
.books-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--sp-l);
}

.book-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-m);
  padding: var(--sp-l);
  transition: var(--t-norm);
  display: flex;
  flex-direction: column;
  gap: var(--sp-m);
}

.book-card:hover {
  transform: translateY(-4px) rotate(-0.5deg);
  border-color: var(--color-primary);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.book-cover {
  aspect-ratio: 3/4;
  background: linear-gradient(135deg, var(--color-navy) 0%, var(--color-surface-2) 100%);
  border-radius: var(--radius-s);
  position: relative;
  overflow: hidden;
  display: grid;
  place-items: center;
  color: var(--color-primary);
  font-family: var(--font-mono);
  font-size: 2.5rem;
  font-weight: 800;
}

.book-cover::before {
  content: '';
  position: absolute;
  top: 0; bottom: 0;
  right: 8px;
  width: 2px;
  background: rgba(255,255,255,0.08);
}

.book-card[data-color="cyan"] .book-cover { background: linear-gradient(135deg, #062A36 0%, #0A4A5C 100%); color: #00ADD8; }
.book-card[data-color="navy"] .book-cover { background: linear-gradient(135deg, #0A2540 0%, #1E3A5F 100%); color: #5FD4F2; }
.book-card[data-color="rose"] .book-cover { background: linear-gradient(135deg, #3A0F1E 0%, #6B1A35 100%); color: #F472B6; }
.book-card[data-color="amber"] .book-cover { background: linear-gradient(135deg, #2A1A05 0%, #5C3A0A 100%); color: #FB923C; }

.book-meta h3 { font-size: 1rem; margin-bottom: 4px; }
.book-meta .author { color: var(--color-text-muted); font-size: 0.85rem; }
.book-card p { color: var(--color-text-muted); font-size: 0.9rem; flex: 1; }
.book-tags { display: flex; gap: var(--sp-xs); flex-wrap: wrap; }
.book-tag {
  font-size: 0.75rem;
  padding: 2px 10px;
  background: rgba(0, 173, 216, 0.1);
  color: var(--color-primary);
  border-radius: 999px;
}

/* ===== Contact ===== */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--sp-m);
  max-width: 800px;
  margin: 0 auto;
}

.contact-card {
  display: flex;
  align-items: center;
  gap: var(--sp-m);
  padding: var(--sp-l);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-m);
  transition: var(--t-norm);
  color: var(--color-text);
  text-decoration: none;
}
.contact-card:hover {
  transform: translateY(-2px);
  border-color: var(--color-primary);
  color: var(--color-text);
}

.contact-icon {
  width: 44px; height: 44px;
  display: grid; place-items: center;
  background: rgba(0, 173, 216, 0.12);
  color: var(--color-primary);
  border-radius: var(--radius-s);
  font-size: 1.2rem;
  flex-shrink: 0;
}
.contact-card .label { font-size: 0.8rem; color: var(--color-text-muted); }
.contact-card .value { font-weight: 600; direction: ltr; text-align: right; word-break: break-all; }

/* ===== Footer ===== */
.footer {
  border-top: 1px solid var(--color-border);
  padding: var(--sp-2xl) 0 var(--sp-l);
  margin-top: var(--sp-3xl);
  background: rgba(0,0,0,0.2);
}
.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: var(--sp-m);
  color: var(--color-text-muted);
  font-size: 0.9rem;
}
.footer .copy { display: flex; align-items: center; gap: var(--sp-s); }
.footer-links { display: flex; gap: var(--sp-l); flex-wrap: wrap; }
.footer-links a { color: var(--color-text-muted); }
.footer-links a:hover { color: var(--color-primary); }

/* ===== Reveal animations ===== */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible { opacity: 1; transform: translateY(0); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
  .reveal { opacity: 1; transform: none; }
}

/* ===== Donate Page ===== */
.donate-hero {
  padding: calc(var(--sp-3xl) + 80px) 0 var(--sp-2xl);
  text-align: center;
}

.coffee-cup {
  width: 180px;
  height: 200px;
  margin: 0 auto var(--sp-l);
  position: relative;
}

.cup-body {
  position: absolute;
  bottom: 0;
  left: 20px;
  right: 20px;
  height: 130px;
  background: linear-gradient(180deg, #1A2540 0%, #0F1A2E 100%);
  border: 2px solid var(--color-primary);
  border-radius: 0 0 30px 30px;
  overflow: hidden;
  box-shadow: 0 10px 40px var(--color-primary-glow);
}

.cup-body::before {
  content: '';
  position: absolute;
  inset: 0 0 0 0;
  background: linear-gradient(180deg, #6F4E37 0%, #3E2818 100%);
  transform: translateY(20%);
  animation: fillCoffee 3s ease-in-out infinite alternate;
}

@keyframes fillCoffee {
  0% { transform: translateY(60%); }
  100% { transform: translateY(15%); }
}

.cup-handle {
  position: absolute;
  right: 0;
  top: 70px;
  width: 36px;
  height: 60px;
  border: 4px solid var(--color-primary);
  border-left: none;
  border-radius: 0 30px 30px 0;
}

.cup-saucer {
  position: absolute;
  bottom: -8px;
  left: 0; right: 0;
  height: 12px;
  background: var(--color-primary);
  border-radius: 50%;
  opacity: 0.6;
}

.steam {
  position: absolute;
  top: -20px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 12px;
}
.steam span {
  display: block;
  width: 6px;
  height: 30px;
  background: linear-gradient(180deg, transparent, rgba(255,255,255,0.4), transparent);
  border-radius: 50%;
  animation: steamRise 2.4s ease-in infinite;
}
.steam span:nth-child(2) { animation-delay: 0.4s; }
.steam span:nth-child(3) { animation-delay: 0.8s; }

@keyframes steamRise {
  0% { transform: translateY(0) scaleX(1); opacity: 0.8; }
  100% { transform: translateY(-50px) scaleX(2.5); opacity: 0; }
}

/* Donation tiers */
.tiers-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--sp-m);
  max-width: 900px;
  margin: 0 auto var(--sp-xl);
}

.tier-card {
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-m);
  padding: var(--sp-l);
  text-align: center;
  cursor: pointer;
  transition: var(--t-norm);
  position: relative;
}
.tier-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-primary);
}
.tier-card.selected {
  border-color: var(--color-primary);
  background: linear-gradient(180deg, rgba(0,173,216,0.08), var(--color-surface));
  box-shadow: 0 10px 30px var(--color-primary-glow);
}
.tier-card.popular::before {
  content: 'محبوب';
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-accent);
  color: #fff;
  font-size: 0.75rem;
  padding: 4px 12px;
  border-radius: 999px;
  font-weight: 600;
}

.tier-icon { font-size: 2.5rem; margin-bottom: var(--sp-s); }
.tier-card h3 { margin-bottom: 4px; font-size: 1.1rem; }
.tier-amount { font-size: 1.4rem; font-weight: 800; color: var(--color-primary); margin: var(--sp-s) 0; }
.tier-card p { font-size: 0.85rem; color: var(--color-text-muted); }

.donate-actions {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-m);
}

.custom-amount {
  display: flex;
  gap: var(--sp-s);
  align-items: center;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-s);
  padding: 4px 4px 4px 16px;
  max-width: 360px;
  width: 100%;
}
.custom-amount input {
  flex: 1;
  background: transparent;
  border: 0;
  color: var(--color-text);
  font-family: inherit;
  font-size: 1rem;
  padding: 12px;
  outline: none;
  text-align: center;
}
.custom-amount input::placeholder { color: var(--color-text-muted); }
.custom-amount span { color: var(--color-text-muted); font-size: 0.9rem; }

.payment-methods {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--sp-m);
  max-width: 800px;
  margin: 0 auto;
}

.payment-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-m);
  padding: var(--sp-l);
}
.payment-card h4 {
  display: flex;
  align-items: center;
  gap: var(--sp-s);
  margin-bottom: var(--sp-s);
  font-size: 1rem;
}

.card-number {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  letter-spacing: 2px;
  color: var(--color-primary);
  background: var(--color-bg);
  padding: 12px;
  border-radius: var(--radius-s);
  text-align: center;
  cursor: pointer;
  user-select: all;
  border: 1px dashed var(--color-border);
  transition: var(--t-fast);
  direction: ltr;
}
.card-number:hover { border-color: var(--color-primary); }
.copy-hint {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  text-align: center;
  margin-top: var(--sp-s);
}

/* ===== About / Portfolio ===== */
.about-hero {
  padding: calc(var(--sp-3xl) + 80px) 0 var(--sp-2xl);
}

.about-grid {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: var(--sp-2xl);
  align-items: center;
}
@media (max-width: 768px) {
  .about-grid { grid-template-columns: 1fr; text-align: center; }
}

.avatar-ring {
  width: 200px; height: 200px;
  border-radius: 50%;
  padding: 4px;
  background: conic-gradient(from 0deg, var(--color-primary), var(--color-accent), var(--color-primary));
  position: relative;
  margin: 0 auto;
  animation: spin 12s linear infinite;
}
.avatar-ring::after {
  content: '';
  position: absolute;
  inset: -8px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--color-primary-glow), transparent 70%);
  z-index: -1;
}
.avatar-ring img,
.avatar-ring .avatar-fallback {
  width: 100%; height: 100%;
  border-radius: 50%;
  background: var(--color-surface);
  display: grid;
  place-items: center;
  font-size: 4rem;
  font-weight: 800;
  color: var(--color-primary);

}
.avatar-ring .avatar-photo {
  object-fit: cover;
  display: block;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.about-info h1 {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  margin-bottom: var(--sp-s);
}
.about-info .role {
  color: var(--color-primary);
  font-weight: 600;
  margin-bottom: var(--sp-m);
}
.about-info .bio {
  color: var(--color-text-muted);
  max-width: 640px;
  margin-bottom: var(--sp-l);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--sp-m);
}
.skill-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-m);
  padding: var(--sp-m);
  display: flex;
  align-items: center;
  gap: var(--sp-m);
  transition: var(--t-norm);
}
.skill-card:hover {
  transform: translateY(-2px);
  border-color: var(--color-primary);
}
.skill-icon {
  width: 40px; height: 40px;
  display: grid; place-items: center;
  background: rgba(0, 173, 216, 0.12);
  color: var(--color-primary);
  border-radius: var(--radius-s);
  font-weight: 800;
  flex-shrink: 0;
}
.skill-card h4 { font-size: 0.95rem; }
.skill-card .level { color: var(--color-text-muted); font-size: 0.8rem; }

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--sp-l);
}
.project-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-m);
  overflow: hidden;
  transition: var(--t-norm);
  display: flex;
  flex-direction: column;
}
.project-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-primary);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}
.project-cover {
  height: 160px;
  background: linear-gradient(135deg, var(--color-navy), var(--color-surface-2));
  display: grid;
  place-items: center;
  font-size: 3rem;
  position: relative;
  overflow: hidden;
}
.project-cover::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 30% 30%, var(--color-primary-glow), transparent 60%);
}
.project-body { padding: var(--sp-l); display: flex; flex-direction: column; gap: var(--sp-s); flex: 1; }
.project-body h3 { font-size: 1.1rem; }
.project-body p { color: var(--color-text-muted); font-size: 0.9rem; flex: 1; }
.project-tags { display: flex; gap: var(--sp-xs); flex-wrap: wrap; }

/* Timeline */
.timeline {
  position: relative;
  max-width: 760px;
  margin: 0 auto;
  padding-right: var(--sp-l);
}
.timeline::before {
  content: '';
  position: absolute;
  top: 0; bottom: 0;
  right: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--color-primary), transparent);
}
.timeline-item {
  position: relative;
  padding-right: var(--sp-l);
  padding-bottom: var(--sp-l);
}
.timeline-item::before {
  content: '';
  position: absolute;
  right: 0;
  top: 8px;
  width: 18px; height: 18px;
  background: var(--color-bg);
  border: 3px solid var(--color-primary);
  border-radius: 50%;
  box-shadow: 0 0 16px var(--color-primary-glow);
}
.timeline-item .date { color: var(--color-primary); font-weight: 600; font-size: 0.85rem; }
.timeline-item h4 { margin: 4px 0; font-size: 1rem; }
.timeline-item p { color: var(--color-text-muted); font-size: 0.9rem; }

/* Toast */
.toast {
  position: fixed;
  bottom: var(--sp-l);
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--color-primary);
  color: #001218;
  padding: 12px 24px;
  border-radius: var(--radius-s);
  font-weight: 600;
  box-shadow: 0 12px 32px var(--color-primary-glow);
  opacity: 0;
  transition: var(--t-norm);
  z-index: 200;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }