@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@500;600;700&family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root{
  --bg:#0a0b0d;
  --bg-elev:#141618;
  --bg-elev-2:#1c1f22;
  --border:#2a2e32;
  --border-soft:#232629;
  --text:#eef0f1;
  --text-dim:#8b9096;
  --text-faint:#5c6167;
  --accent:#ffb454;
  --accent-dim:#8a6a35;
  --accent-ink:#1c1204;
  --accent-2:#4fd1c5;
  --danger:#ff5d6c;
  --radius:10px;
  --radius-sm:6px;
  --shadow:0 12px 32px rgba(0,0,0,.5);
  --font-display:'Space Grotesk',sans-serif;
  --font-body:'Inter',sans-serif;
  --font-mono:'JetBrains Mono',monospace;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  background:
    radial-gradient(900px 480px at 12% -8%, rgba(255,180,84,.05) 0%, transparent 60%),
    radial-gradient(700px 420px at 100% 0%, rgba(79,209,197,.04) 0%, transparent 55%),
    var(--bg);
  color:var(--text);
  font-family:var(--font-body);
  font-size:15px;
  min-height:100vh;
  -webkit-font-smoothing:antialiased;
}
body.has-player{padding-bottom:112px}
a{color:inherit;text-decoration:none}
.container{max-width:1200px;margin:0 auto;padding:0 20px}

/* Scrollbar */
*{scrollbar-width:thin;scrollbar-color:var(--border) transparent}
::-webkit-scrollbar{width:8px;height:8px}
::-webkit-scrollbar-thumb{background:var(--border);border-radius:4px}
::-webkit-scrollbar-thumb:hover{background:var(--text-faint)}

h1,h2,h3{font-family:var(--font-display)}

/* ============ Navbar ============ */
.navbar{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 24px;background:rgba(10,11,13,.9);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--border-soft);position:sticky;top:0;z-index:50;
  gap:10px;
}
.brand{
  font-family:var(--font-display);font-weight:700;font-size:19px;letter-spacing:.01em;
  white-space:nowrap;display:flex;align-items:center;gap:2px;
}
.brand::before{
  content:'';display:inline-block;width:9px;height:9px;border-radius:50%;
  background:var(--accent);box-shadow:0 0 10px 1px rgba(255,180,84,.6);margin-right:8px;
}
.brand span{color:var(--accent)}
.nav-links{display:flex;gap:2px;align-items:center}
.nav-links a{
  padding:8px 14px;border-radius:var(--radius-sm);color:var(--text-dim);font-weight:500;font-size:13.5px;
  transition:.15s;white-space:nowrap;font-family:var(--font-mono);letter-spacing:.01em;
}
.nav-links a:hover{background:var(--bg-elev-2);color:var(--text)}
.nav-links a.active{background:rgba(255,180,84,.1);color:var(--accent)}
.nav-user{display:flex;align-items:center;gap:12px;font-size:13px;color:var(--text-dim)}
.nav-user span{font-family:var(--font-mono)}
.btn-logout{
  padding:7px 14px;border-radius:var(--radius-sm);background:var(--bg-elev-2);border:1px solid var(--border);
  color:var(--text);cursor:pointer;font-size:12.5px;font-family:var(--font-mono);
}
.btn-logout:hover{border-color:var(--danger);color:var(--danger)}
.nav-toggle{
  display:none;background:var(--bg-elev-2);border:1px solid var(--border);color:var(--text);
  border-radius:var(--radius-sm);width:38px;height:38px;font-size:18px;cursor:pointer;
}

/* ============ Auth pages ============ */
.auth-wrap{min-height:90vh;display:flex;align-items:center;justify-content:center;padding:20px}
.auth-card{
  width:380px;max-width:100%;background:var(--bg-elev);border:1px solid var(--border);border-radius:var(--radius);
  padding:34px;box-shadow:var(--shadow);position:relative;overflow:hidden;
}
.auth-card::before{
  content:'';position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--accent),var(--accent-2));
}
.auth-card h1{margin:0 0 4px;font-size:23px;font-weight:700}
.auth-card p.sub{color:var(--text-dim);font-size:13px;margin:0 0 24px}
.field{margin-bottom:14px}
.field label{display:block;font-size:12px;color:var(--text-dim);margin-bottom:6px;font-family:var(--font-mono);text-transform:uppercase;letter-spacing:.04em}
.field input,.field select{
  width:100%;padding:11px 12px;border-radius:var(--radius-sm);border:1px solid var(--border);
  background:var(--bg-elev-2);color:var(--text);font-size:14px;outline:none;font-family:var(--font-body);
}
.field input:focus,.field select:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(255,180,84,.12)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 20px;border-radius:var(--radius-sm);border:none;background:var(--accent);color:var(--accent-ink);
  font-weight:600;font-size:14px;cursor:pointer;transition:.15s;font-family:var(--font-body);
}
.btn:hover{filter:brightness(1.08);transform:translateY(-1px)}
.btn:active{transform:translateY(0)}
.btn.block{width:100%}
.btn.ghost{background:transparent;border:1px solid var(--border);color:var(--text)}
.btn.ghost:hover{border-color:var(--accent);color:var(--accent)}
.btn.danger{background:var(--danger);color:#2a0508}
.alert{padding:11px 13px;border-radius:var(--radius-sm);font-size:13px;margin-bottom:16px;border:1px solid transparent}
.alert.error{background:rgba(255,93,108,.1);color:#ff8b96;border-color:rgba(255,93,108,.25)}
.alert.ok{background:rgba(79,209,197,.1);color:#7de3d9;border-color:rgba(79,209,197,.25)}
.foot-link{text-align:center;margin-top:18px;font-size:13px;color:var(--text-dim)}

/* ============ Dashboard ============ */
.hero{padding:44px 0 10px}
.hero h1{font-size:27px;margin:0 0 6px;font-weight:700}
.hero p{color:var(--text-dim);margin:0;font-family:var(--font-mono);font-size:13px}
.grid-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:16px;margin:28px 0}
.card{
  background:var(--bg-elev);border:1px solid var(--border);border-radius:var(--radius);
  padding:22px;transition:.15s;position:relative;
}
.card:hover{border-color:var(--accent-dim);transform:translateY(-2px)}
.card .icon{font-size:26px;margin-bottom:10px}
.card h3{margin:0 0 6px;font-size:16px;font-weight:600}
.card p{margin:0;color:var(--text-dim);font-size:12.5px;line-height:1.5}

/* ============ Page layout ============ */
.page-wrap{display:grid;grid-template-columns:270px 1fr;gap:20px;padding:22px 0}
.panel{
  background:var(--bg-elev);border:1px solid var(--border);border-radius:var(--radius);padding:16px;
}
.panel h2{
  font-size:11.5px;margin:0 0 12px;color:var(--text-dim);text-transform:uppercase;letter-spacing:.09em;
  font-family:var(--font-mono);font-weight:600;
}
.list-item{
  display:flex;align-items:center;gap:10px;padding:9px 10px;border-radius:var(--radius-sm);cursor:pointer;font-size:13.5px;
  border:1px solid transparent;
}
.list-item:hover{background:var(--bg-elev-2)}
.list-item.active{background:rgba(255,180,84,.08);border-color:rgba(255,180,84,.25);color:var(--accent)}
.list-item .meta{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.list-item small{color:var(--text-dim);display:block;font-size:11px}
.row{display:flex;gap:8px;align-items:center}
.row.between{justify-content:space-between}
.small-input{
  flex:1;padding:8px 10px;border-radius:var(--radius-sm);border:1px solid var(--border);
  background:var(--bg-elev-2);color:var(--text);font-size:13px;font-family:var(--font-body);
}
.small-input:focus{outline:none;border-color:var(--accent)}
.icon-btn{
  background:var(--bg-elev-2);border:1px solid var(--border);color:var(--text-dim);
  border-radius:var(--radius-sm);padding:6px 10px;cursor:pointer;font-size:12.5px;font-family:var(--font-mono);
}
.icon-btn:hover{color:var(--accent);border-color:var(--accent-dim)}
hr.sep{border:none;border-top:1px solid var(--border);margin:14px 0}

/* ============ Meter bar (thanh mức kiểu VU-meter, dùng cho dung lượng/tiến trình) ============ */
.meter-bar{
  height:8px;border-radius:4px;overflow:hidden;background:var(--bg-elev-2);
  border:1px solid var(--border-soft);max-width:400px;
}
.meter-fill{
  height:100%;
  background-image:repeating-linear-gradient(90deg, var(--accent) 0 5px, transparent 5px 7px);
  background-color:transparent;
  transition:width .3s ease;
}
.meter-fill.warn{background-image:repeating-linear-gradient(90deg, var(--danger) 0 5px, transparent 5px 7px)}
.meter-label{font-family:var(--font-mono);font-size:12px;color:var(--text-dim)}

/* ============ Media table ============ */
.table-wrap{width:100%;overflow-x:auto}
.media-table{width:100%;border-collapse:collapse;font-family:var(--font-body)}
.media-table td{padding:10px 8px;border-bottom:1px solid var(--border-soft);font-size:13.5px;white-space:nowrap}
.media-table td:nth-child(2){white-space:normal}
.tag{
  font-size:10.5px;padding:2px 8px;border-radius:20px;background:var(--bg-elev-2);color:var(--text-dim);
  font-family:var(--font-mono);border:1px solid var(--border-soft);
}

/* ============ Player bar (nhạc) ============ */
.player-bar{
  position:fixed;left:0;right:0;bottom:0;background:rgba(10,11,13,.97);backdrop-filter:blur(12px);
  border-top:1px solid var(--border-soft);padding:12px 24px calc(12px + env(safe-area-inset-bottom)) 24px;z-index:100;
  box-shadow:0 -10px 30px rgba(0,0,0,.35);
}
.player-inner{max-width:1200px;margin:0 auto;display:grid;grid-template-columns:1fr 2fr 1fr;gap:16px;align-items:center}
.now-playing{display:flex;flex-direction:column;overflow:hidden}
.now-playing .title{font-size:13.5px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.now-playing .sub{font-size:11px;color:var(--text-dim);font-family:var(--font-mono)}
.controls-center{display:flex;flex-direction:column;align-items:center;gap:6px}
.transport{display:flex;align-items:center;gap:16px}
.transport button{
  background:none;border:none;color:var(--text);font-size:17px;cursor:pointer;padding:6px;
}
.transport button:hover{color:var(--accent)}
.transport button.play{
  background:var(--accent);color:var(--accent-ink);border-radius:50%;width:38px;height:38px;
  display:flex;align-items:center;justify-content:center;font-size:15px;
}
.transport button.play:hover{color:var(--accent-ink);filter:brightness(1.1)}
.transport button.toggled{color:var(--accent)}
.seek-row{display:flex;align-items:center;gap:8px;width:100%;font-size:10.5px;color:var(--text-dim);font-family:var(--font-mono)}

input[type=range]{
  -webkit-appearance:none;appearance:none;flex:1;height:4px;border-radius:2px;
  background:var(--bg-elev-2);outline:none;
}
input[type=range]::-webkit-slider-thumb{
  -webkit-appearance:none;width:13px;height:13px;border-radius:50%;background:var(--accent);
  cursor:pointer;border:2px solid var(--bg);box-shadow:0 0 0 1px var(--accent-dim);
}
input[type=range]::-moz-range-thumb{
  width:13px;height:13px;border-radius:50%;background:var(--accent);cursor:pointer;border:2px solid var(--bg);
}
input[type=checkbox]{accent-color:var(--accent);width:15px;height:15px}

.side-controls{display:flex;align-items:center;justify-content:flex-end;gap:12px}
.side-controls select{
  background:var(--bg-elev-2);border:1px solid var(--border);color:var(--text);border-radius:var(--radius-sm);
  padding:6px 8px;font-size:11.5px;font-family:var(--font-mono);
}
.vol-row{display:flex;align-items:center;gap:6px}
.vol-row input[type=range]{width:80px}

/* ============ Video page ============ */
.video-stage{background:#000;border-radius:var(--radius);overflow:hidden;border:1px solid var(--border)}
.video-stage video{width:100%;display:block;max-height:70vh;background:#000}
.video-controls{padding:14px;background:var(--bg-elev)}

/* ============ Photo gallery ============ */
.gallery-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:12px}
.gallery-item{
  position:relative;border-radius:var(--radius-sm);overflow:hidden;border:1px solid var(--border);cursor:pointer;
  aspect-ratio:1/1;background:var(--bg-elev-2);
}
.gallery-item.dragging{opacity:.4}
.gallery-item img{width:100%;height:100%;object-fit:cover;display:block;transition:.2s}
.gallery-item:hover img{transform:scale(1.05)}
.gallery-item .name{
  position:absolute;bottom:0;left:0;right:0;padding:7px 9px;font-size:11px;
  background:linear-gradient(transparent,rgba(0,0,0,.8));white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
  font-family:var(--font-mono);
}

/* ============ Lightbox / slideshow ============ */
.lightbox{
  position:fixed;inset:0;background:rgba(4,5,6,.96);display:none;align-items:center;justify-content:center;
  flex-direction:column;z-index:200;
}
.lightbox.open{display:flex}
.lightbox img{max-width:88vw;max-height:74vh;border-radius:var(--radius);box-shadow:var(--shadow);transition:opacity .35s ease;opacity:1}
.lightbox img.fading{opacity:0}
.lightbox-controls{
  margin-top:18px;display:flex;align-items:center;gap:16px;background:var(--bg-elev);
  padding:10px 18px;border-radius:30px;border:1px solid var(--border);
}
.lightbox-controls button{background:none;border:none;color:var(--text);font-size:17px;cursor:pointer}
.lightbox-controls button:hover{color:var(--accent)}
.lightbox-controls button.toggled{color:var(--accent)}
.lightbox-close{position:absolute;top:20px;right:26px;font-size:26px;color:var(--text-dim);cursor:pointer;background:none;border:none}
.lightbox-close:hover{color:var(--danger)}
.interval-select{background:var(--bg-elev-2);border:1px solid var(--border);color:var(--text);border-radius:var(--radius-sm);padding:5px 8px;font-size:11.5px;font-family:var(--font-mono)}
.lightbox-caption{color:var(--text-dim);font-size:12.5px;margin-top:10px;font-family:var(--font-mono)}

/* ============ Upload ============ */
.upload-box{
  border:1.5px dashed var(--border);border-radius:var(--radius);padding:26px;text-align:center;
  background:var(--bg-elev);margin-bottom:24px;
}

/* ============ Empty state ============ */
.empty{color:var(--text-faint);font-size:13px;padding:20px 4px;text-align:center;font-family:var(--font-mono)}
.gallery-grid .empty{grid-column:1/-1}
.grid-cards .empty{grid-column:1/-1}

/* ============================================================
   RESPONSIVE / MOBILE — tối ưu sâu cho màn hình điện thoại
   ============================================================ */
@media (max-width: 860px) {
  .page-wrap{grid-template-columns:1fr}
}

@media (max-width: 640px) {
  body{font-size:14px}
  .container{padding:0 14px}

  /* Navbar -> hamburger.
     Quan trọng: bỏ backdrop-filter trên navbar ở mobile — nếu không, theo đặc tả CSS,
     backdrop-filter biến navbar thành containing block cho các phần tử con position:fixed
     bên trong nó (như #navLinks), khiến menu bị giới hạn trong chiều cao navbar thay vì
     phủ toàn màn hình. Dùng nền đặc màu thay cho hiệu ứng mờ ở mobile để tránh lỗi này. */
  .navbar{padding:11px 14px;backdrop-filter:none;background:rgb(9,10,12)}
  .nav-toggle{display:flex;align-items:center;justify-content:center;flex-shrink:0}
  .nav-links{
    display:none;position:fixed;top:59px;left:0;right:0;bottom:0;
    background:rgba(7,8,9,.98);backdrop-filter:blur(10px);
    flex-direction:column;align-items:stretch;gap:2px;padding:14px;z-index:60;
    overflow-y:auto;
  }
  .nav-links.open{display:flex}
  .nav-links a{padding:15px 16px;font-size:15px;border-radius:var(--radius-sm);text-align:left}
  .nav-user span{display:none}
  .nav-user{gap:8px}
  .brand{font-size:17px}

  .hero{padding:20px 0 4px}
  .hero h1{font-size:19px}
  .grid-cards{grid-template-columns:1fr 1fr;gap:10px;margin:16px 0}
  .card{padding:14px}
  .card .icon{font-size:20px;margin-bottom:6px}
  .card h3{font-size:14px}
  .card p{font-size:11.5px}

  .panel{padding:12px}
  .panel h2{font-size:11px}
  .page-wrap{gap:12px;padding:12px 0}
  .empty{font-family:var(--font-body);font-size:13px;padding:16px 8px}

  /* Player bar: xếp dọc, vùng chạm to hơn, chừa vùng an toàn home-indicator iOS */
  body.has-player{padding-bottom:calc(210px + env(safe-area-inset-bottom))}
  .player-bar{padding:10px 12px calc(10px + env(safe-area-inset-bottom)) 12px}
  .player-inner{grid-template-columns:1fr;gap:8px}
  .now-playing{text-align:center}
  .now-playing .title{font-size:13px}
  .transport{gap:24px;justify-content:center}
  .transport button{font-size:21px;padding:8px;min-width:42px;min-height:42px}
  .transport button.play{width:48px;height:48px;font-size:18px}
  .side-controls{justify-content:center;flex-wrap:wrap;gap:8px}
  .side-controls select{max-width:140px !important;flex:1 1 auto}
  .vol-row input[type=range]{width:110px}

  /* Video */
  .video-stage video{max-height:38vh}
  .video-controls{padding:10px;flex-wrap:wrap;gap:10px}
  .video-controls .transport{gap:14px;justify-content:flex-start}

  /* Photo gallery */
  .gallery-grid{grid-template-columns:repeat(auto-fill,minmax(100px,1fr));gap:7px}
  .lightbox img{max-width:94vw;max-height:58vh}
  .lightbox-controls{flex-wrap:wrap;justify-content:center;gap:10px;padding:10px 14px;max-width:94vw;border-radius:16px}
  .lightbox-controls select{font-size:11px}
  .lightbox-close{top:12px;right:14px;font-size:24px}

  /* Upload */
  .upload-box{padding:18px 14px}
  .upload-box .row{flex-direction:column;align-items:stretch !important}
  .upload-box select,.upload-box input[type=text]{max-width:none !important}

  /* Bảng dữ liệu: cuộn ngang trong khung thay vì vỡ layout */
  .media-table{min-width:480px}
  .media-table td{font-size:12.5px;padding:9px 6px}

  /* Auth cards */
  .auth-card{width:100%;padding:24px 20px}

  /* Form hàng ngang trong admin -> xếp dọc trên mobile */
  form.row{flex-wrap:wrap}
}

@media (max-width: 380px) {
  .grid-cards{grid-template-columns:1fr}
  .gallery-grid{grid-template-columns:repeat(auto-fill,minmax(90px,1fr))}
}

/* Vùng chạm rộng hơn cho thiết bị cảm ứng bất kể kích thước màn hình */
@media (pointer: coarse) {
  .icon-btn, .btn, .btn-logout{min-height:40px}
  .list-item{min-height:46px}
  input[type=range]::-webkit-slider-thumb{width:17px;height:17px}
  input[type=range]::-moz-range-thumb{width:17px;height:17px}
}

/* Tôn trọng cài đặt giảm chuyển động của người dùng */
@media (prefers-reduced-motion: reduce) {
  *{animation-duration:.01ms !important;transition-duration:.01ms !important}
}