/* STATIC ACADEMY — shared styles */

@import url('https://fonts.googleapis.com/css2?family=Rajdhani:wght@400;500;600;700&family=K2D:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;600&display=swap');

:root {
  --accent: #0078FF;
  --accent2: #00C2FF;
  --bg: #07090D;
  --panel: rgba(16, 20, 28, 0.72);
  --panel-solid: #10141c;
  --line: rgba(255, 255, 255, 0.08);
  --text: #E8EDF5;
  --muted: #8A93A6;
  --danger: #FF4757;
  --ok: #2ED573;
  --radius: 16px;
  --font: 'Rajdhani', 'K2D', sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html, body { height: 100%; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  overflow-x: hidden;
}

body::before {
  content: '';
  position: fixed; inset: 0; z-index: -1;
  background:
    radial-gradient(900px 500px at 15% -10%, color-mix(in srgb, var(--accent) 22%, transparent), transparent 60%),
    radial-gradient(800px 600px at 110% 110%, color-mix(in srgb, var(--accent2) 14%, transparent), transparent 60%),
    var(--bg);
}

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

/* ---------- primitives ---------- */

.panel {
  background: var(--panel);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 11px 22px;
  font-family: var(--font); font-weight: 700; font-size: 15px; letter-spacing: 0.06em;
  text-transform: uppercase; text-decoration: none;
  color: #fff; background: linear-gradient(120deg, var(--accent), var(--accent2));
  border: none; border-radius: 12px; cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, opacity 0.15s;
  box-shadow: 0 0 24px color-mix(in srgb, var(--accent) 35%, transparent);
}
.btn:hover { transform: translateY(-1px); box-shadow: 0 4px 32px color-mix(in srgb, var(--accent) 55%, transparent); }
.btn:active { transform: translateY(0); }
.btn:disabled { opacity: 0.45; cursor: not-allowed; transform: none; }
.btn.ghost { background: transparent; border: 1px solid var(--line); box-shadow: none; color: var(--text); }
.btn.ghost:hover { border-color: var(--accent); color: var(--accent); box-shadow: none; }
.btn.danger { background: linear-gradient(120deg, #ff4757, #ff6b81); box-shadow: 0 0 24px rgba(255, 71, 87, 0.3); }
.btn.sm { padding: 7px 14px; font-size: 12.5px; border-radius: 9px; }

input, textarea, select {
  width: 100%;
  padding: 12px 14px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--line);
  border-radius: 11px;
  color: var(--text);
  font-family: var(--font); font-size: 15.5px; font-weight: 500;
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}
input:focus, textarea:focus, select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 20%, transparent);
}
input[type="color"] { padding: 4px; height: 44px; cursor: pointer; }
textarea { resize: vertical; min-height: 90px; }
label { display: block; font-size: 12.5px; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); margin: 14px 0 6px; }

.mono { font-family: 'JetBrains Mono', monospace; }
.muted { color: var(--muted); }
.tag {
  display: inline-block; padding: 3px 10px; border-radius: 999px;
  font-size: 11.5px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase;
  background: color-mix(in srgb, var(--accent) 18%, transparent); color: var(--accent2);
  border: 1px solid color-mix(in srgb, var(--accent) 35%, transparent);
}
.tag.red { background: rgba(255,71,87,0.14); color: #ff8a95; border-color: rgba(255,71,87,0.4); }
.tag.green { background: rgba(46,213,115,0.12); color: #6de8a0; border-color: rgba(46,213,115,0.35); }

/* ---------- lock screen (index) ---------- */

.lock-wrap {
  min-height: 100vh; display: flex; flex-direction: column; align-items: center; justify-content: center;
  padding: 24px; text-align: center;
}
.lock-logo { max-height: 72px; margin-bottom: 20px; }
.lock-title {
  font-size: clamp(38px, 7vw, 68px); font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase;
  background: linear-gradient(120deg, #fff 30%, var(--accent2));
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.lock-tag { color: var(--muted); font-size: 18px; font-weight: 500; margin: 10px 0 34px; max-width: 520px; }
.lock-card { width: min(440px, 100%); padding: 30px 28px; text-align: left; }
.lock-card h2 { font-size: 15px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--accent2); margin-bottom: 4px; }
.key-input { font-family: 'JetBrains Mono', monospace; letter-spacing: 0.12em; text-transform: uppercase; text-align: center; font-size: 17px; }
.lock-err { color: var(--danger); font-weight: 600; margin-top: 12px; min-height: 20px; font-size: 14.5px; }
.lock-foot { margin-top: 26px; color: var(--muted); font-size: 13.5px; }
.lock-foot a { color: var(--accent2); text-decoration: none; }

/* ---------- academy layout ---------- */

.app { display: grid; grid-template-columns: 300px 1fr; min-height: 100vh; }
.sidebar {
  border-right: 1px solid var(--line);
  background: rgba(10, 13, 19, 0.85);
  backdrop-filter: blur(20px);
  padding: 22px 18px;
  position: sticky; top: 0; height: 100vh; overflow-y: auto;
}
.sb-brand { display: flex; align-items: center; gap: 12px; padding: 6px 8px 20px; border-bottom: 1px solid var(--line); margin-bottom: 18px; }
.sb-brand img { height: 34px; }
.sb-brand .name { font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; font-size: 16px; }
.sb-member { padding: 10px 12px; border-radius: 12px; background: rgba(255,255,255,0.04); border: 1px solid var(--line); margin-bottom: 18px; font-size: 14px; }
.sb-member .mono { color: var(--accent2); font-size: 12.5px; }

.course-block { margin-bottom: 8px; }
.course-head {
  display: flex; justify-content: space-between; align-items: center; gap: 8px;
  padding: 11px 12px; border-radius: 11px; cursor: pointer; font-weight: 700; letter-spacing: 0.04em;
  transition: background 0.15s;
}
.course-head:hover { background: rgba(255,255,255,0.05); }
.module-title { padding: 9px 12px 4px 18px; font-size: 12px; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); }
.lesson-link {
  display: flex; align-items: center; gap: 9px;
  padding: 8px 12px 8px 24px; border-radius: 10px; cursor: pointer;
  color: var(--text); font-weight: 500; font-size: 15px;
  transition: background 0.12s, color 0.12s;
}
.lesson-link:hover { background: rgba(255,255,255,0.05); }
.lesson-link.active { background: color-mix(in srgb, var(--accent) 18%, transparent); color: var(--accent2); font-weight: 600; }
.lesson-link .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--muted); flex: none; }
.lesson-link.active .dot { background: var(--accent2); box-shadow: 0 0 8px var(--accent2); }

.main { padding: 30px clamp(20px, 4vw, 48px); max-width: 1160px; }

.announce { padding: 14px 18px; margin-bottom: 22px; border-left: 3px solid var(--accent); }
.announce .when { font-size: 12px; color: var(--muted); }

/* ---------- protected player ---------- */

.player-shell {
  position: relative; border-radius: var(--radius); overflow: hidden;
  background: #000; border: 1px solid var(--line);
  user-select: none; -webkit-user-select: none;
  box-shadow: 0 10px 60px rgba(0,0,0,0.5);
}
.player-shell video { display: block; width: 100%; aspect-ratio: 16/9; background: #000; }
.player-shell.guarded video { filter: blur(30px) brightness(0.3); }

.wm-layer { position: absolute; inset: 0; pointer-events: none; overflow: hidden; z-index: 5; }
.wm-badge {
  position: absolute; white-space: nowrap;
  font-family: 'JetBrains Mono', monospace; font-size: 13px; font-weight: 600;
  color: #fff; text-shadow: 0 0 6px rgba(0,0,0,0.8);
  transition: top 2.2s ease-in-out, left 2.2s ease-in-out;
  will-change: top, left;
}
.wm-tile {
  position: absolute; inset: -50%;
  background-image: var(--wm-img);
  background-size: 340px 200px;
  transform: rotate(-18deg);
  opacity: 0.35;
}
.guard-msg {
  position: absolute; inset: 0; z-index: 6; display: none;
  align-items: center; justify-content: center; text-align: center;
  background: rgba(5,7,10,0.82); backdrop-filter: blur(6px);
  font-weight: 700; letter-spacing: 0.06em; padding: 24px;
}
.player-shell.guarded .guard-msg { display: flex; }

.lesson-title { font-size: clamp(24px, 3.4vw, 34px); font-weight: 700; margin: 22px 0 6px; letter-spacing: 0.02em; }
.lesson-desc { color: var(--muted); font-size: 16.5px; line-height: 1.65; max-width: 820px; white-space: pre-wrap; }

.attach-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 12px; margin-top: 18px; }
.attach {
  display: flex; align-items: center; gap: 12px; padding: 13px 15px;
  text-decoration: none; color: var(--text);
  transition: border-color 0.15s, transform 0.15s;
}
.attach:hover { border-color: var(--accent); transform: translateY(-2px); }
.attach .icon { font-size: 22px; }
.attach .meta { min-width: 0; }
.attach .nm { font-weight: 600; font-size: 14.5px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.attach .sz { font-size: 12px; color: var(--muted); }

.img-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 12px; margin-top: 18px; }
.img-grid img { width: 100%; border-radius: 12px; border: 1px solid var(--line); display: block; }

.section-h { font-size: 13px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--accent2); font-weight: 700; margin: 30px 0 4px; }

.welcome { padding: 46px 40px; text-align: center; }
.welcome h1 { font-size: clamp(28px, 4.5vw, 44px); letter-spacing: 0.08em; text-transform: uppercase; }
.welcome p { color: var(--muted); margin-top: 10px; font-size: 17px; }

/* ---------- dev studio ---------- */

.dev-app { display: grid; grid-template-columns: 240px 1fr; min-height: 100vh; }
.dev-nav { border-right: 1px solid var(--line); background: rgba(10,13,19,0.85); padding: 20px 14px; position: sticky; top: 0; height: 100vh; }
.dev-nav .brand { font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase; padding: 8px 12px 20px; color: var(--accent2); border-bottom: 1px solid var(--line); margin-bottom: 14px; font-size: 15px; }
.dev-tab {
  display: flex; align-items: center; gap: 10px; width: 100%;
  padding: 11px 13px; margin-bottom: 4px; border-radius: 11px;
  background: none; border: none; color: var(--text); text-align: left;
  font-family: var(--font); font-size: 15.5px; font-weight: 600; cursor: pointer;
  transition: background 0.12s;
}
.dev-tab:hover { background: rgba(255,255,255,0.05); }
.dev-tab.active { background: color-mix(in srgb, var(--accent) 20%, transparent); color: var(--accent2); }
.dev-main { padding: 30px clamp(18px, 3.5vw, 44px); max-width: 1240px; width: 100%; }
.dev-main h1 { font-size: 26px; letter-spacing: 0.06em; text-transform: uppercase; margin-bottom: 20px; }

.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 14px; }
.stat { padding: 20px; }
.stat .num { font-size: 34px; font-weight: 700; color: var(--accent2); }
.stat .lbl { font-size: 12.5px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); margin-top: 2px; }

.table { width: 100%; border-collapse: collapse; }
.table th { text-align: left; font-size: 12px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); padding: 10px 12px; border-bottom: 1px solid var(--line); }
.table td { padding: 12px; border-bottom: 1px solid var(--line); font-size: 14.5px; vertical-align: middle; }
.table tr:hover td { background: rgba(255,255,255,0.025); }

.row { display: flex; gap: 12px; flex-wrap: wrap; align-items: flex-end; }
.row > div { flex: 1; min-width: 160px; }
.card-pad { padding: 22px; margin-bottom: 18px; }

.media-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 14px; }
.media-card { padding: 14px; }
.media-card .thumb { width: 100%; aspect-ratio: 16/10; border-radius: 10px; background: rgba(255,255,255,0.04); display: flex; align-items: center; justify-content: center; font-size: 34px; margin-bottom: 10px; overflow: hidden; }
.media-card .thumb img { width: 100%; height: 100%; object-fit: cover; }
.media-card .nm { font-weight: 600; font-size: 14px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.media-card .meta { font-size: 12px; color: var(--muted); margin: 3px 0 10px; }

.drop {
  border: 2px dashed var(--line); border-radius: var(--radius);
  padding: 40px; text-align: center; color: var(--muted); cursor: pointer;
  transition: border-color 0.15s, background 0.15s; margin-bottom: 20px;
}
.drop.over, .drop:hover { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 6%, transparent); }
.prog { height: 8px; border-radius: 99px; background: rgba(255,255,255,0.06); overflow: hidden; margin-top: 12px; display: none; }
.prog .bar { height: 100%; width: 0%; background: linear-gradient(90deg, var(--accent), var(--accent2)); transition: width 0.2s; }

.tree-course { margin-bottom: 14px; }
.tree-head { display: flex; align-items: center; gap: 10px; padding: 14px 16px; }
.tree-head input { flex: 1; }
.tree-body { padding: 0 16px 16px 32px; }
.tree-mod { border-left: 2px solid var(--line); padding-left: 16px; margin-top: 12px; }
.tree-lesson { display: flex; gap: 10px; align-items: center; margin-top: 8px; flex-wrap: wrap; }
.tree-lesson input { flex: 2; min-width: 150px; }
.tree-lesson select { flex: 2; min-width: 150px; }

.toast {
  position: fixed; bottom: 24px; right: 24px; z-index: 999;
  padding: 14px 20px; border-radius: 12px; font-weight: 600;
  background: var(--panel-solid); border: 1px solid var(--accent);
  box-shadow: 0 8px 40px rgba(0,0,0,0.5);
  opacity: 0; transform: translateY(10px); transition: all 0.25s; pointer-events: none;
}
.toast.show { opacity: 1; transform: translateY(0); }
.toast.err { border-color: var(--danger); }

.modal-bg { position: fixed; inset: 0; background: rgba(3,5,8,0.7); backdrop-filter: blur(6px); z-index: 100; display: none; align-items: center; justify-content: center; padding: 20px; }
.modal-bg.open { display: flex; }
.modal { width: min(560px, 100%); padding: 26px; max-height: 88vh; overflow-y: auto; }
.modal h2 { letter-spacing: 0.06em; text-transform: uppercase; font-size: 18px; margin-bottom: 8px; }

.hidden { display: none !important; }

/* mobile */
@media (max-width: 900px) {
  .app, .dev-app { grid-template-columns: 1fr; }
  .sidebar, .dev-nav { position: relative; height: auto; }
  .dev-nav { display: flex; flex-wrap: wrap; gap: 4px; }
  .dev-nav .brand { width: 100%; }
}

/* scrollbars */
::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.12); border-radius: 99px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent); }