/* ============================================================
   AURORA — design tokens
   ============================================================ */
:root{
  --bg:            #0f0f0f;
  --bg-elevated:   #151517;
  --surface:       rgba(255,255,255,0.045);
  --surface-hover: rgba(255,255,255,0.075);
  --border:        rgba(255,255,255,0.08);
  --border-soft:   rgba(255,255,255,0.05);

  --text-1: #f5f5f7;
  --text-2: #a1a1aa;
  --text-3: #6b6b72;

  --purple:      #7C3AED;
  --purple-soft: #a271f5;
  --pink:        #EC4899;
  --gradient:    linear-gradient(135deg, var(--purple) 0%, var(--pink) 100%);
  --gradient-soft: linear-gradient(135deg, rgba(124,58,237,0.18) 0%, rgba(236,72,153,0.18) 100%);

  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --radius-pill: 999px;

  --shadow-soft: 0 8px 30px rgba(0,0,0,0.35);
  --shadow-lift: 0 16px 40px rgba(0,0,0,0.5);
  --shadow-glow: 0 0 0 1px rgba(124,58,237,0.25), 0 8px 24px rgba(124,58,237,0.25);

  --nav-h: 68px;
  --sidebar-w: 232px;

  --ease: cubic-bezier(.2,.8,.2,1);
}

*{box-sizing:border-box;}
html{color-scheme:dark;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text-1);
  font-family:'Kanit','Inter',system-ui,-apple-system,sans-serif;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
img{display:block;max-width:100%;}
ul{list-style:none;margin:0;padding:0;}

::selection{background:rgba(124,58,237,0.4);}

/* subtle ambient glow behind the whole app */
body::before{
  content:'';
  position:fixed; inset:0; z-index:0; pointer-events:none;
  background:
    radial-gradient(700px 500px at 12% -8%, rgba(124,58,237,0.14), transparent 60%),
    radial-gradient(600px 480px at 90% 8%, rgba(236,72,153,0.10), transparent 60%);
}

:focus-visible{
  outline:2px solid var(--purple-soft);
  outline-offset:2px;
  border-radius:6px;
}

@media (prefers-reduced-motion: reduce){
  *{animation-duration:0.001ms !important; transition-duration:0.001ms !important;}
}

/* ============================================================
   Layout shell
   ============================================================ */
.app{
  position:relative; z-index:1;
  min-height:100vh;
}

/* ---- Top nav ---- */
.topnav{
  position:sticky; top:0; z-index:50;
  height:var(--nav-h);
  display:flex; align-items:center; gap:20px;
  padding:0 24px;
  background:rgba(15,15,15,0.72);
  backdrop-filter:blur(20px) saturate(140%);
  -webkit-backdrop-filter:blur(20px) saturate(140%);
  border-bottom:1px solid var(--border-soft);
}
.logo{
  display:flex; align-items:center; gap:9px;
  font-weight:800; font-size:19px; letter-spacing:0;
  flex-shrink:0;
}
.logo-mark{
  width:28px; height:28px; border-radius:9px;
  background:var(--gradient);
  box-shadow:0 4px 14px rgba(124,58,237,0.45);
}
.logo span{background:var(--gradient); -webkit-background-clip:text; background-clip:text; color:transparent;}

.search-box{
  flex:1; max-width:480px;
  display:flex; align-items:center; gap:10px;
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius-pill);
  padding:10px 16px;
  transition:border-color .2s var(--ease), background .2s var(--ease);
}
.search-box:focus-within{border-color:rgba(124,58,237,0.55); background:var(--surface-hover);}
.search-box input{
  flex:1; background:none; border:none; outline:none;
  color:var(--text-1); font-size:14px;
}
.search-box input::placeholder{color:var(--text-3);}
.search-box svg{flex-shrink:0; opacity:0.6;}

.nav-categories{
  display:flex; gap:4px;
  flex-shrink:0;
}
.nav-categories a{
  padding:8px 12px; border-radius:var(--radius-pill);
  font-size:13.5px; color:var(--text-2); font-weight:500;
  transition:background .18s var(--ease), color .18s var(--ease);
  white-space:nowrap;
}
.nav-categories a:hover{background:var(--surface); color:var(--text-1);}
.nav-categories a.active{background:var(--gradient-soft); color:#e9d9ff;}

.nav-right{display:flex; align-items:center; gap:8px; margin-left:auto; flex-shrink:0;}
.icon-btn{
  width:38px; height:38px; border-radius:var(--radius-md);
  display:flex; align-items:center; justify-content:center;
  background:transparent; border:1px solid transparent;
  color:var(--text-2); cursor:pointer; position:relative;
  transition:background .18s var(--ease), color .18s var(--ease), border-color .18s var(--ease);
}
.icon-btn:hover{background:var(--surface); color:var(--text-1); border-color:var(--border);}
.icon-btn .dot{
  position:absolute; top:7px; right:7px;
  width:7px; height:7px; border-radius:50%;
  background:var(--pink); box-shadow:0 0 0 2px var(--bg);
}
.avatar{
  width:36px; height:36px; border-radius:50%;
  background:var(--gradient);
  display:flex; align-items:center; justify-content:center;
  font-size:13px; font-weight:700; color:#fff;
  cursor:pointer; border:2px solid rgba(255,255,255,0.08);
}
.hamburger{display:none;}

/* ---- Sidebar ---- */
.sidebar{
  position:sticky; top:var(--nav-h);
  width:var(--sidebar-w); flex-shrink:0;
  height:calc(100vh - var(--nav-h));
  padding:20px 12px;
  border-right:1px solid var(--border-soft);
  display:flex; flex-direction:column; gap:2px;
  overflow-y:auto;
}
.side-link{
  display:flex; align-items:center; gap:12px;
  padding:10px 14px; border-radius:var(--radius-md);
  color:var(--text-2); font-size:14px; font-weight:500;
  transition:background .18s var(--ease), color .18s var(--ease);
}
.side-link svg{opacity:0.85; flex-shrink:0;}
.side-link:hover{background:var(--surface); color:var(--text-1);}
.side-link.active{
  background:var(--gradient-soft);
  color:#f2e8ff;
  box-shadow:inset 0 0 0 1px rgba(124,58,237,0.3);
}
.side-divider{height:1px; background:var(--border-soft); margin:12px 6px;}
.side-label{
  font-size:11px; text-transform:uppercase; letter-spacing:0.08em;
  color:var(--text-3); font-weight:700; padding:14px 14px 6px;
}

/* ---- Shell / main ---- */
.shell{display:flex; align-items:flex-start;}
.main{flex:1; min-width:0; padding:28px 32px 80px;}
.container{max-width:1400px; margin:0 auto;}

.page-head{margin-bottom:22px;}
.page-head h1{font-size:22px; font-weight:700; letter-spacing:0; margin:0 0 4px;}
.page-head p{color:var(--text-2); font-size:14px; margin:0;}

/* ============================================================
   Components
   ============================================================ */

/* Glass card base */
.glass{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}

/* Buttons */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  padding:10px 18px; border-radius:var(--radius-pill);
  font-size:13.5px; font-weight:600; cursor:pointer;
  border:1px solid transparent;
  transition:transform .15s var(--ease), box-shadow .2s var(--ease), background .18s var(--ease), border-color .18s var(--ease);
}
.btn:active{transform:scale(0.97);}
.btn-primary{background:var(--gradient); color:#fff; box-shadow:0 6px 20px rgba(124,58,237,0.35);}
.btn-primary:hover{box-shadow:0 8px 26px rgba(124,58,237,0.5);}
.btn-ghost{background:var(--surface); color:var(--text-1); border-color:var(--border);}
.btn-ghost:hover{background:var(--surface-hover);}
.btn-ghost.active{border-color:var(--pink); color:#ffd7ec;}
.btn-icon{width:40px; height:40px; padding:0; border-radius:50%; background:var(--surface); border:1px solid var(--border); color:var(--text-1);}
.btn-icon:hover{background:var(--surface-hover);}

/* Badge */
.badge{
  display:inline-flex; align-items:center; gap:5px;
  font-size:11px; font-weight:700; letter-spacing:0.02em;
  padding:4px 9px; border-radius:var(--radius-pill);
}
.badge-premium{
  background:var(--gradient); color:#fff;
  box-shadow:0 4px 12px rgba(124,58,237,0.4);
}
.badge-new{background:rgba(52,211,153,0.15); color:#6ee7b7; border:1px solid rgba(52,211,153,0.3);}
.badge-soft{background:rgba(255,255,255,0.08); color:var(--text-2);}

/* Section heading row */
.section-head{
  display:flex; align-items:baseline; justify-content:space-between;
  margin:36px 0 16px;
}
.section-head h2{font-size:17px; font-weight:700; letter-spacing:0; margin:0;}
.section-head a{font-size:13px; color:var(--purple-soft); font-weight:600;}
.section-head a:hover{color:var(--pink);}

/* Hero */
.hero{
  position:relative; overflow:hidden;
  border-radius:20px;
  min-height:340px;
  display:flex; align-items:flex-end;
  padding:36px;
  border:1px solid var(--border);
  background:
    linear-gradient(0deg, rgba(0,0,0,0.75) 0%, rgba(0,0,0,0.15) 60%, rgba(0,0,0,0.35) 100%),
    linear-gradient(120deg, #241a35 0%, #1a1420 55%, #200f1c 100%);
}
.hero-glow{
  position:absolute; inset:-40% -10% auto auto; width:60%; height:140%;
  background:radial-gradient(circle, rgba(236,72,153,0.28), transparent 65%);
  pointer-events:none;
}
.hero-glow.p2{inset:auto auto -50% -10%; background:radial-gradient(circle, rgba(124,58,237,0.28), transparent 65%);}
.hero-content{position:relative; max-width:560px;}
.hero-eyebrow{
  display:inline-flex; align-items:center; gap:6px;
  font-size:12px; font-weight:700; color:#e9d9ff; margin-bottom:12px;
  text-transform:uppercase; letter-spacing:0.06em;
}
.hero h1{font-size:32px; line-height:1.4; letter-spacing:0; margin:0 0 10px; font-weight:700;}
.hero p{color:var(--text-2); font-size:14.5px; margin:0 0 20px; max-width:480px;}
.hero-actions{display:flex; gap:10px;}
.hero-progress{
  margin-top:18px; max-width:340px;
}
.hero-progress .bar{height:4px; border-radius:2px; background:rgba(255,255,255,0.15); overflow:hidden;}
.hero-progress .bar i{display:block; height:100%; width:64%; background:var(--gradient); border-radius:2px;}
.hero-progress span{font-size:12px; color:var(--text-3); display:block; margin-top:6px;}

/* Grids */
.grid-cards{
  display:grid; gap:20px;
  grid-template-columns:repeat(4, 1fr);
}
.grid-posts{
  display:grid; gap:18px;
  grid-template-columns:repeat(4, 1fr);
}
.grid-categories{
  display:grid; gap:18px;
  grid-template-columns:repeat(4, 1fr);
}

/* Channel card */
.channel-card{
  border-radius:var(--radius-lg);
  overflow:hidden;
  cursor:pointer;
  transition:transform .25s var(--ease), box-shadow .25s var(--ease);
}
.channel-card:hover{transform:translateY(-4px); box-shadow:var(--shadow-lift);}
.channel-cover{
  position:relative; height:112px;
  background-size:cover; background-position:center;
}
.channel-cover .badge-premium{position:absolute; top:10px; right:10px;}
.channel-body{
  padding:0 16px 16px; margin-top:-26px; position:relative;
}
.channel-avatar{
  width:52px; height:52px; border-radius:14px;
  border:3px solid var(--bg-elevated);
  background:var(--gradient);
  display:flex; align-items:center; justify-content:center;
  font-weight:800; color:#fff; font-size:16px;
  margin-bottom:10px;
}
.channel-name{font-size:15px; font-weight:700; margin:0 0 4px; letter-spacing:0;}
.channel-desc{font-size:12.5px; color:var(--text-2); margin:0 0 12px; line-height:1.5;
  display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden;}
.channel-meta{display:flex; gap:12px; font-size:11.5px; color:var(--text-3);}
.channel-meta span{display:flex; align-items:center; gap:4px;}

/* Post card */
.post-card{
  cursor:pointer;
  transition:transform .22s var(--ease);
}
.post-card:hover{transform:translateY(-3px);}
.post-thumb{
  position:relative; border-radius:var(--radius-md); overflow:hidden;
  aspect-ratio:16/9; background:#1c1c1f;
  background-size:cover; background-position:center;
}
.post-thumb::after{
  content:''; position:absolute; inset:0;
  background:linear-gradient(0deg, rgba(0,0,0,0.55) 0%, transparent 40%);
  opacity:0; transition:opacity .2s var(--ease);
}
.post-card:hover .post-thumb::after{opacity:1;}
.post-thumb .play{
  position:absolute; inset:0; display:flex; align-items:center; justify-content:center;
  opacity:0; transition:opacity .2s var(--ease);
}
.post-card:hover .post-thumb .play{opacity:1;}
.play-circle{
  width:46px; height:46px; border-radius:50%;
  background:rgba(255,255,255,0.15); backdrop-filter:blur(6px);
  border:1px solid rgba(255,255,255,0.3);
  display:flex; align-items:center; justify-content:center;
}
.post-thumb .duration{
  position:absolute; bottom:8px; right:8px;
  background:rgba(0,0,0,0.7); color:#fff;
  font-size:11px; font-weight:600; padding:2px 6px; border-radius:5px;
}
.post-thumb .res{
  position:absolute; bottom:8px; left:8px;
  background:rgba(0,0,0,0.55); color:#fff;
  font-size:10.5px; font-weight:600; padding:2px 6px; border-radius:5px;
  letter-spacing:0.02em;
}
.post-thumb .badge-premium{position:absolute; top:8px; right:8px;}
.post-info{padding:10px 2px 0;}
.post-title{font-size:13.5px; font-weight:600; margin:0 0 4px; line-height:1.35;
  display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden;}
.post-desc{font-size:12px; color:var(--text-3); margin:0 0 6px; line-height:1.4;
  display:-webkit-box; -webkit-line-clamp:1; -webkit-box-orient:vertical; overflow:hidden;}
.post-meta{display:flex; gap:8px; font-size:11.5px; color:var(--text-3);}
.post-meta .dot-sep::before{content:'•'; margin-right:8px;}

/* Category card */
.category-card{
  position:relative; border-radius:var(--radius-lg); overflow:hidden;
  height:150px; cursor:pointer;
  background-size:cover; background-position:center;
  display:flex; align-items:flex-end; padding:16px;
  transition:transform .22s var(--ease);
}
.category-card:hover{transform:translateY(-3px);}
.category-card::before{
  content:''; position:absolute; inset:0;
  background:linear-gradient(0deg, rgba(0,0,0,0.85) 0%, rgba(0,0,0,0.1) 65%);
}
.category-card .cc-inner{position:relative;}
.category-card h3{font-size:15px; margin:0 0 3px; font-weight:700;}
.category-card span{font-size:12px; color:var(--text-2);}

/* Tabs / filter pills */
.pill-row{display:flex; gap:8px; flex-wrap:wrap;}
.pill{
  padding:8px 14px; border-radius:var(--radius-pill);
  font-size:13px; font-weight:600; color:var(--text-2);
  background:var(--surface); border:1px solid var(--border);
  cursor:pointer; transition:all .18s var(--ease);
}
.pill:hover{color:var(--text-1); background:var(--surface-hover);}
.pill.active{background:var(--gradient); color:#fff; border-color:transparent;}

/* Footer nav for mobile */
.mobile-nav{display:none;}

/* Scrollbar */
::-webkit-scrollbar{width:10px; height:10px;}
::-webkit-scrollbar-track{background:transparent;}
::-webkit-scrollbar-thumb{background:rgba(255,255,255,0.12); border-radius:8px;}
::-webkit-scrollbar-thumb:hover{background:rgba(255,255,255,0.2);}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width:1200px){
  .grid-cards, .grid-posts, .grid-categories{grid-template-columns:repeat(3,1fr);}
}
@media (max-width:960px){
  .nav-categories, .search-box{display:none;}
  .sidebar{
    position:fixed; left:0; top:var(--nav-h); z-index:60;
    background:rgba(15,15,15,0.97); backdrop-filter:blur(20px);
    transform:translateX(-100%); transition:transform .25s var(--ease);
    width:260px; border-right:1px solid var(--border);
  }
  .sidebar.open{transform:translateX(0);}
  .hamburger{
    display:flex; width:38px; height:38px; border-radius:var(--radius-md);
    align-items:center; justify-content:center; background:transparent; border:none; color:var(--text-1); cursor:pointer;
  }
  .grid-cards, .grid-posts, .grid-categories{grid-template-columns:repeat(2,1fr);}
  .main{padding:20px 16px 90px;}
}
@media (max-width:640px){
  .grid-cards, .grid-posts, .grid-categories{grid-template-columns:1fr;}
  .hero{min-height:280px; padding:24px;}
  .hero h1{font-size:24px;}
  .nav-right .icon-btn:not(.hamburger){display:none;}
  .mobile-nav{
    display:flex; position:fixed; bottom:0; left:0; right:0; z-index:50;
    height:64px; background:rgba(15,15,15,0.9); backdrop-filter:blur(20px);
    border-top:1px solid var(--border-soft);
    align-items:center; justify-content:space-around;
  }
  .mobile-nav a{display:flex; flex-direction:column; align-items:center; gap:3px; color:var(--text-3); font-size:10px;}
  .mobile-nav a.active{color:var(--purple-soft);}
}