/* SmartLMS admin shell — dark theme matching the landing page tokens.
   Used by /app and /course. The landing page (/) keeps its own inline styles. */

:root {
  --bg: #060814;
  --text: #f6f8ff;
  --muted: #a8b2d8;
  --soft: #d7ddff;
  --blue: #47d7ff;
  --purple: #9b5cff;
  --pink: #ff4fd8;
  --green: #44ffc7;
  --gold: #ffd166;
  --danger: #ff6b6b;
  --border: rgba(255, 255, 255, 0.16);
  --border-soft: rgba(255, 255, 255, 0.08);
  --card: rgba(255, 255, 255, 0.06);
  --card-strong: linear-gradient(180deg, rgba(255,255,255,0.095), rgba(255,255,255,0.045));
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.45);
  --radius: 22px;
  --max: 1100px;
  --font: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background:
    radial-gradient(circle at top left, rgba(71, 215, 255, 0.12), transparent 28rem),
    radial-gradient(circle at 80% 4%, rgba(155, 92, 255, 0.16), transparent 32rem),
    linear-gradient(135deg, #050711 0%, #090d21 46%, #040510 100%);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.55;
}

a { color: var(--blue); text-decoration: none; }
a:hover { color: white; text-decoration: underline; }

code, pre, .mono {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.9em;
}

/* --- top nav (shared with landing-page visual) --- */
.nav {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(20px);
  background: rgba(5, 7, 17, 0.72);
  border-bottom: 1px solid var(--border-soft);
}
.nav-inner {
  display: flex; align-items: center; justify-content: space-between; gap: 20px;
  width: min(var(--max), calc(100% - 32px));
  margin: 0 auto;
  padding: 14px 0;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; letter-spacing: -0.04em; }
.brand a { color: var(--text); text-decoration: none; display: flex; align-items: center; gap: 10px; }
.logo-mark {
  width: 36px; height: 36px; display: grid; place-items: center;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--blue), var(--purple) 56%, var(--pink));
  box-shadow: 0 0 24px rgba(71, 215, 255, 0.3);
  color: white; font-weight: 950; font-size: 0.95em;
}
.brand small { display: block; color: var(--muted); font-weight: 600; font-size: 0.72rem; letter-spacing: 0.05em; }
.nav-tabs { display: flex; gap: 4px; }
.nav-tabs button {
  background: transparent;
  border: 1px solid transparent;
  color: var(--muted);
  font: inherit;
  font-weight: 700;
  padding: 8px 14px;
  border-radius: 999px;
  cursor: pointer;
  transition: 150ms ease;
}
.nav-tabs button:hover { color: white; background: rgba(255,255,255,0.06); }
.nav-tabs button.active {
  color: white;
  background: rgba(71, 215, 255, 0.1);
  border-color: rgba(71, 215, 255, 0.3);
}
.nav-cta { color: var(--muted); font-size: 0.88rem; font-weight: 650; }
.nav-cta a { color: var(--muted); }
.nav-cta a:hover { color: white; text-decoration: none; }

/* --- main shell --- */
.wrap {
  width: min(var(--max), calc(100% - 32px));
  margin: 0 auto;
  padding: 28px 0 80px;
}
.page-header { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 22px; flex-wrap: wrap; gap: 12px; }
.page-header h1 { font-size: 1.35em; letter-spacing: -0.03em; margin: 0; }
.muted { color: var(--muted); font-size: 0.9em; }

/* --- card --- */
.card {
  background: var(--card-strong);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  margin-bottom: 14px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.18);
}
.card h2 { margin: 0 0 8px 0; font-size: 1.08em; letter-spacing: -0.02em; }
.card h2 a { color: inherit; text-decoration: none; }
.card h2 a:hover { color: var(--blue); }

/* --- tag chips --- */
.tag {
  display: inline-block;
  background: rgba(255,255,255,0.06);
  color: var(--soft);
  border: 1px solid var(--border-soft);
  padding: 2px 9px;
  border-radius: 999px;
  font-size: 0.78em;
  font-weight: 700;
  margin-right: 4px;
}

/* --- forms --- */
form .row { margin-bottom: 14px; }
label { display: block; font-size: 0.85em; color: var(--soft); margin-bottom: 6px; font-weight: 650; }
input[type=text], input[type=email], textarea, select {
  width: 100%;
  padding: 11px 13px;
  font: inherit;
  background: rgba(7, 10, 24, 0.85);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 14px;
  outline: none;
  transition: border-color 150ms ease, box-shadow 150ms ease;
}
input:focus, textarea:focus, select:focus {
  border-color: rgba(71, 215, 255, 0.65);
  box-shadow: 0 0 0 4px rgba(71, 215, 255, 0.12);
}
textarea { min-height: 80px; resize: vertical; }
.inline { display: flex; gap: 10px; }
.inline > * { flex: 1; }
.checkbox-row { display: flex; gap: 8px; align-items: center; }
.checkbox-row input { width: auto; accent-color: var(--blue); }
.checkbox-row label { margin: 0; }

/* --- buttons --- */
button, .btn {
  background: linear-gradient(135deg, var(--blue), var(--purple), var(--pink));
  color: white;
  border: 0;
  border-radius: 999px;
  padding: 10px 18px;
  font: inherit;
  font-weight: 800;
  cursor: pointer;
  transition: 150ms ease;
  white-space: nowrap;
}
button:hover, .btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 12px 32px rgba(71, 215, 255, 0.18), 0 12px 32px rgba(155, 92, 255, 0.18);
}
button.secondary, .btn.secondary {
  background: rgba(255,255,255,0.07);
  border: 1px solid var(--border);
  color: var(--soft);
}
button.secondary:hover, .btn.secondary:hover { background: rgba(71, 215, 255, 0.1); border-color: rgba(71,215,255,0.4); color: white; }
button.danger, .btn.danger {
  background: rgba(255, 107, 107, 0.12);
  border: 1px solid rgba(255, 107, 107, 0.4);
  color: #ffc4c4;
}
button.danger:hover, .btn.danger:hover { background: rgba(255, 107, 107, 0.18); color: white; box-shadow: 0 8px 24px rgba(255,107,107,0.2); }
button:disabled { opacity: 0.55; cursor: progress; transform: none; }

/* --- lessons + content sections --- */
ul.lessons { margin: 6px 0 0 0; padding-left: 20px; }
ul.lessons li { margin-bottom: 3px; font-size: 0.94em; color: var(--soft); }
.section { margin-top: 22px; }
.section h3 { font-size: 0.95em; margin: 0 0 8px 0; color: var(--soft); border-bottom: 1px solid var(--border-soft); padding-bottom: 4px; letter-spacing: 0.02em; }
pre {
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid var(--border-soft);
  padding: 12px;
  border-radius: 12px;
  overflow-x: auto;
}
.progress { color: var(--muted); font-style: italic; font-size: 0.9em; }
.error { color: #ff9090; }
.success { color: #86efac; }

/* --- tabs (for /app) --- */
.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* --- table (for interests list) --- */
table { width: 100%; border-collapse: collapse; font-size: 0.92em; }
th, td { padding: 10px 12px; text-align: left; border-bottom: 1px solid var(--border-soft); vertical-align: top; }
th { color: var(--muted); font-weight: 700; font-size: 0.82em; letter-spacing: 0.04em; text-transform: uppercase; }
tr:hover td { background: rgba(255,255,255,0.025); }
td.msg { color: var(--soft); max-width: 360px; }
td.actions { white-space: nowrap; }
.kbd {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  background: rgba(0,0,0,0.4);
  border: 1px solid var(--border-soft);
  padding: 1px 6px;
  border-radius: 6px;
  font-size: 0.85em;
  color: var(--soft);
}