/* Apple-system fonts */
:root {
  --bg: #fafaf7;
  --fg: #1a2740;
  --muted: #5a6478;
  --border: rgba(20, 30, 60, 0.08);
  --secondary: rgba(255, 255, 255, 0.55);
  --accent: #f07a1f;
  --accent-2: #f5a142;
  --primary-fg: #ffffff;
  --gradient-hero: linear-gradient(135deg, #f07a1f, #f5a142);
  --gradient-glow: radial-gradient(60% 60% at 50% 0%, rgba(240, 122, 31, 0.25), transparent 70%);
  --shadow-glow: 0 10px 40px -10px rgba(240, 122, 31, 0.35);
  --radius: 16px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0a0a0c;
    --fg: #f5f5f7;
    --muted: #9ca3af;
    --border: rgba(255, 255, 255, 0.1);
    --secondary: rgba(255, 255, 255, 0.06);
  }
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text",
    "Helvetica Neue", Helvetica, Arial, system-ui, sans-serif;
  background: var(--bg);
  color: var(--fg);
  -webkit-font-smoothing: antialiased;
}
button { font-family: inherit; cursor: pointer; }
.site-header {
  position: fixed;
  top: 16px; left: 0; right: 0;
  z-index: 50;
  padding: 0 16px;
}

.nav {
  max-width: 1152px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 16px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--nav-bg);
  position: relative;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 25px 50px -12px rgba(0,0,0,.4);
}
@media (min-width: 768px) { .nav { padding: 12px 24px; } }

/* liquid sheen */
.nav::before{
  content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;
  background:linear-gradient(120deg,transparent 30%,rgba(255,255,255,.45) 50%,transparent 70%);
  background-size:200% 100%;
  animation:sheen 9s linear infinite;
  mix-blend-mode:overlay;opacity:.6;
}
@keyframes sheen{0%{background-position:200% 0}100%{background-position:-200% 0}}



/* Brand */
.brand {
  display: flex; align-items: center; gap: 12px;
  text-decoration: none; color: var(--text);
  transition: opacity .2s;
}
.brand:hover { opacity: .9; }
.brand__logo {
  height: 120px; width: 120px; object-fit: contain;
  border-radius: 999px;
}
@media (min-width: 768px) {
  .brand__logo { height: 120px; width: 120px; }
}
.brand__text { font-weight: 700; line-height: 1.1; }
.accent { color: var(--accent); }
.brand__text--desktop { display: none; font-size: 16px; }
.brand__text--mobile  { display: flex; flex-direction: column; font-size: 14px; }
.brand__text--mobile .line { display: block; }
@media (min-width: 768px) {
  .brand__text--desktop { display: block; }
  .brand__text--mobile  { display: none; }
}

/* Desktop nav */
.nav__list {
  display: none;
  list-style: none; margin: 0; padding: 0;
  gap: 4px; align-items: center;
}
@media (min-width: 1024px) { .nav__list { display: flex; } }

.nav__item { position: relative; }
.nav__link {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 8px 12px;
  border: 0; background: transparent;
  font: inherit; font-size: 14px; font-weight: 500;
  color: var(--text-muted); cursor: pointer;
  border-radius: 9999px;
  text-decoration: none;
  transition: color .2s;
}
.nav__link:hover { color: var(--text); }
.chev {
  width: 16px; height: 16px;
  fill: none; stroke: currentColor; stroke-width: 2;
  stroke-linecap: round; stroke-linejoin: round;
  transition: transform .25s ease;
}
.has-sub:hover .chev,
.m-item.open .chev { transform: rotate(180deg); }



/* Submenu */
.submenu {
  position: absolute;
  top: 100%; left: 50%;
  transform: translate(-50%, 8px) scale(.96);
  margin-top: 12px;
  list-style: none; padding: 8px;
  width: 224px;
  background: var(--sub-bg);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: 0 20px 40px rgba(0,0,0,.35);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  opacity: 0;
  pointer-events: none;
  transition: opacity .2s ease, transform .2s ease;
  z-index: 60;
}
.has-sub:hover .submenu,
.has-sub:focus-within .submenu {
  opacity: 1;
  pointer-events: auto;
  transform: translate(-50%, 0) scale(1);
}
.submenu li { opacity: 0; transform: translateX(-8px); transition: opacity .25s ease, transform .25s ease; }
.has-sub:hover .submenu li { opacity: 1; transform: translateX(0); }
.submenu li:nth-child(1) { transition-delay: .04s; }
.submenu li:nth-child(2) { transition-delay: .08s; }
.submenu li:nth-child(3) { transition-delay: .12s; }
.submenu li:nth-child(4) { transition-delay: .16s; }
.submenu a {
  display: block; padding: 8px 12px; font-size: 14px;
  color: var(--text-muted); text-decoration: none;
  border-radius: 8px;
  transition: background .15s, color .15s;
}
.submenu a:hover { background: var(--chip); color: var(--accent); }

/* Actions */
.nav__actions { display: flex; align-items: center; gap: 8px; }
.icon-btn {
  display: grid; place-items: center;
  height: 40px; width: 40px;
  border: 0; background: var(--chip);
  color: var(--text);
  border-radius: 9999px; cursor: pointer;
  backdrop-filter: blur(12px);
  transition: background .2s;
}
.icon-btn:hover { background: var(--chip-hover); }
.icon { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; transition: opacity .2s, transform .25s; }

/* Theme icon visibility */
.icon-sun  { display: none; }
.icon-moon { display: block; }
[data-theme="light"] .icon-sun  { display: block; }
[data-theme="light"] .icon-moon { display: none; }

/* Burger */
.burger { display: grid; }
@media (min-width: 1024px) { .burger { display: none; } }
.icon-x { display: none; }
.mobile-open .icon-menu { display: none; }
.mobile-open .icon-x    { display: block; }

/* Mobile menu */
.mobile-menu {
  max-width: 1152px;
  margin: 8px auto 0;
  border-radius: 24px;
  border: 1px solid var(--border);
  background: var(--sub-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  overflow: hidden;
  max-height: 0;
  opacity: 0;
  transform: translateY(-10px);
  transition: max-height .3s ease, opacity .25s ease, transform .25s ease, padding .3s ease;
}
.mobile-menu.open {
  max-height: 600px;
  opacity: 1;
  transform: translateY(0);
}
.mobile-menu__inner { padding: 16px; }
@media (min-width: 1024px) { .mobile-menu, #burger { display: none; } }

.m-item { border-radius: 12px; }
.m-link {
  display: flex; align-items: center; justify-content: space-between;
  width: 100%; padding: 12px;
  border: 0; background: transparent;
  font: inherit; font-size: 14px; font-weight: 500;
  color: var(--text-muted); text-decoration: none;
  border-radius: 8px; cursor: pointer;
}
.m-link:hover { background: var(--chip); }
.m-sub {
  list-style: none; padding: 0 0 0 16px; margin: 0;
  max-height: 0; overflow: hidden;
  transition: max-height .3s ease;
}
.m-item.open .m-sub { max-height: 240px; }
.m-sub a {
  display: block; padding: 8px 12px; font-size: 14px;
  color: var(--text-muted); text-decoration: none;
  border-radius: 8px;
  transition: background .15s, color .15s;
}
.m-sub a:hover { background: var(--chip); color: var(--accent); }

/* ============== RESPONSIVE ============== */
@media (max-width:960px){
  .nav__menu,.nav__cta{display:none}
  .nav__burger{display:flex}
  .nav__inner{border-radius:22px}
}
@media (max-width:600px){
  .section{padding:4rem 0}
  .hero__content{padding-top:6rem}
}

.theme-toggle{
  width:38px;height:38px;border-radius:999px;border:0;cursor:pointer;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,.5);color:var(--fg);
  border:1px solid var(--border);
  position:relative;overflow:hidden;
}
.theme-toggle svg{width:18px;height:18px;position:absolute;transition:transform .5s ease,opacity .35s ease;}
.theme-toggle .icon-moon{opacity:0;transform:rotate(-90deg) scale(.5);}
.theme-toggle .icon-sun{opacity:1;transform:rotate(0) scale(1);}
html[data-theme="dark"] .theme-toggle{background:rgba(255,255,255,.08);}
html[data-theme="dark"] .theme-toggle .icon-sun{opacity:0;transform:rotate(90deg) scale(.5);}
html[data-theme="dark"] .theme-toggle .icon-moon{opacity:1;transform:rotate(0) scale(1);}

.container { max-width: 1120px; margin: 0 auto; padding: 0 24px; }
.section { padding-top: 40px; }

/* Hero */
.hero { position: relative; border-bottom: 1px solid var(--border); overflow: hidden; text-align:center; }
.hero-glow {
  position: absolute; inset: 0; z-index: 0; opacity: 0.7;
  background: var(--gradient-glow); pointer-events: none;
}
.hero .container { position: relative; padding-top: 96px; padding-bottom: 56px; }
.eyebrow { font-size: 12px; letter-spacing: .2em; text-transform: uppercase; color: var(--muted); margin: 0; }
.title { font-size: clamp(40px, 6vw, 60px); font-weight: 600; letter-spacing: -0.02em; margin: 12px 0 0; line-height: 1.05; }
.grad {
  background: var(--gradient-hero);
  -webkit-background-clip: text; background-clip: text; color: transparent;
  background-size: 200% 200%;
  animation: grad 8s ease infinite;
}
@keyframes grad { 0%,100%{background-position:0% 50%} 50%{background-position:100% 50%} }
.lede { color: var(--muted); font-size: 18px; max-width: 640px; margin-top: 16px; }

/* Glass */
.glass {
  background: color-mix(in oklab, var(--bg) 60%, transparent);
  backdrop-filter: saturate(140%) blur(14px);
  -webkit-backdrop-filter: saturate(140%) blur(14px);
  border: 1px solid var(--border);
  border-radius: 20px;
}

/* Dropzone */
.dropzone { padding: 36px; transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease; }
.dropzone.drag { transform: scale(1.01); border-color: var(--primary); box-shadow: var(--shadow-glow); }
.dz-inner { display: flex; flex-direction: column; align-items: center; text-align: center; gap: 12px; }
.dz-icon {
  width: 56px; height: 56px; display: grid; place-items: center;
  border-radius: 16px; background: var(--gradient-hero); color: white;
}
.h2 { margin: 4px 0 0; font-size: 20px; font-weight: 600; }
.muted { color: var(--muted); margin: 0; font-size: 14px; }
.small { font-size: 12px; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 22px; border-radius: 999px; border: 0;
  font-size: 14px; font-weight: 500;
  transition: transform .15s ease, opacity .15s ease;
}
.btn:hover { transform: scale(1.02); }
.btn-primary { color: var(--primary-fg); background: var(--gradient-hero); box-shadow: var(--shadow-glow); }
.btn-shine { position: relative; overflow: hidden; }
.btn-shine::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(120deg, transparent 30%, rgba(255,255,255,.35) 50%, transparent 70%);
  transform: translateX(-100%);
}
.btn-shine:hover::after { transform: translateX(100%); transition: transform .8s ease; }

/* Filters */
.filters {
  display: flex; flex-direction: column; gap: 14px;
  align-items: stretch; justify-content: space-between;
}
@media (min-width: 720px) { .filters { flex-direction: row; align-items: center; } }
.search { position: relative; flex: 0 1 360px; }
.search svg { position: absolute; left: 14px; top: 50%; transform: translateY(-50%); color: var(--muted); }
.search input {
  width: 100%; padding: 12px 16px 12px 38px; border-radius: 999px;
  background: color-mix(in oklab, var(--bg) 60%, transparent);
  border: 1px solid var(--border); color: var(--fg); outline: none; font-size: 14px;
  backdrop-filter: blur(10px);
}
.search input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px color-mix(in oklab, var(--primary) 30%, transparent); }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  padding: 8px 14px; border-radius: 999px; font-size: 12px; font-weight: 500;
  background: transparent; border: 1px solid var(--border); color: var(--muted);
}
.chip:hover { color: var(--fg); }
.chip.active { color: var(--primary-fg); background: var(--gradient-hero); border-color: transparent; }

/* Grid */
.grid { display: grid; grid-template-columns: 1fr; gap: 20px; }
@media (min-width: 640px) { .grid { grid-template-columns: 1fr 1fr; } }
@media (min-width: 1024px) { .grid { grid-template-columns: 1fr 1fr 1fr; } }

.card {
  position: relative; padding: 20px; border-radius: 18px;
  display: flex; flex-direction: column;
  transition: transform .2s ease, box-shadow .2s ease;
}
.card:hover { transform: translateY(-3px); box-shadow: 0 16px 40px -20px rgba(0,0,0,.35); }
.card-top { display: flex; gap: 14px; align-items: flex-start; }
.card-icon {
  width: 48px; height: 48px; border-radius: 14px;
  display: grid; place-items: center; background: var(--gradient-hero); color: white; flex-shrink: 0;
}
.card-title { margin: 0; font-size: 15px; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.card-meta { margin: 2px 0 0; font-size: 12px; color: var(--muted); }
.tags { display: flex; gap: 6px; margin-top: 14px; flex-wrap: wrap; }
.tag { background: var(--secondary); color: var(--muted); border-radius: 999px; padding: 4px 10px; font-size: 11px; }

.dl-btn {
  position: relative; margin-top: 18px; height: 44px; border-radius: 999px;
  color: var(--primary-fg); background: var(--gradient-hero); border: 0;
  font-weight: 500; font-size: 14px; box-shadow: var(--shadow-glow);
  display: flex; align-items: center; justify-content: center; overflow: hidden;
}
.dl-btn[disabled] { opacity: .9; cursor: progress; }
.dl-state { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; gap: 8px; transition: opacity .2s; }
.dl-state.hidden { opacity: 0; }
.spinner {
  width: 16px; height: 16px; border-radius: 50%;
  border: 2px solid rgba(255,255,255,.4); border-top-color: white;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.remove {
  margin-left: auto; background: transparent; border: 0; color: var(--muted);
  padding: 6px; border-radius: 999px; opacity: 0; transition: opacity .15s, background .15s;
}
.card:hover .remove { opacity: 1; }
.remove:hover { background: var(--secondary); color: var(--fg); }

.empty { padding: 56px; text-align: center; color: var(--muted); margin-top: 16px; }