:root {
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #172033;
  background: #f4f7fb;
  --card: #ffffff;
  --muted: #667085;
  --border: #e5e9f0;
  --accent: #315efb;
  --accent-soft: #eaf0ff;
  --empty: #f8fafc;
}

* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; background: radial-gradient(circle at top right, #eaf0ff, transparent 35%), var(--bg, #f4f7fb); }
.container { width: min(1100px, calc(100% - 28px)); margin: 0 auto; padding: 34px 0 60px; }
.hero { display: flex; align-items: center; justify-content: space-between; gap: 20px; margin-bottom: 26px; }
.eyebrow { margin: 0 0 5px; color: var(--accent); font-weight: 800; letter-spacing: .08em; font-size: .82rem; }
h1 { margin: 0; font-size: clamp(2rem, 5vw, 3.3rem); letter-spacing: -.04em; }
.subtitle { margin: 9px 0 0; color: var(--muted); }
.icon-btn { width: 44px; height: 44px; border: 1px solid var(--border); background: var(--card); border-radius: 14px; cursor: pointer; font-size: 1.2rem; }
.controls { display: flex; gap: 14px; align-items: end; margin-bottom: 20px; flex-wrap: wrap; }
.week-tabs { display: flex; gap: 8px; flex-wrap: wrap; flex: 1; }
.tab { border: 1px solid var(--border); background: var(--card); color: inherit; padding: 10px 15px; border-radius: 12px; cursor: pointer; font-weight: 700; }
.tab.active { background: var(--accent); color: white; border-color: var(--accent); }
.search { display: grid; gap: 5px; color: var(--muted); font-size: .78rem; font-weight: 700; min-width: 220px; }
.search input { width: 100%; padding: 11px 13px; border: 1px solid var(--border); background: var(--card); color: inherit; border-radius: 12px; outline: none; }
.search input:focus { border-color: var(--accent); }
.day { margin: 18px 0 24px; }
.day-title { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 10px; }
.day-title h2 { margin: 0; font-size: 1.15rem; }
.day-title span { color: var(--muted); font-size: .85rem; }
.grid { display: grid; gap: 9px; }
.lesson { display: grid; grid-template-columns: 145px 1fr auto; gap: 16px; align-items: center; background: var(--card); border: 1px solid var(--border); border-radius: 15px; padding: 15px 17px; box-shadow: 0 4px 18px rgba(31, 41, 55, .04); }
.lesson.empty { background: var(--empty); box-shadow: none; }
.time { font-weight: 800; white-space: pre-line; }
.subject { font-weight: 700; line-height: 1.35; white-space: pre-line; }
.room { color: var(--muted); font-size: .9rem; text-align: right; white-space: pre-line; }
.badge { display: inline-block; margin-top: 7px; font-size: .72rem; font-weight: 800; padding: 4px 8px; border-radius: 999px; background: var(--accent-soft); color: var(--accent); }
.empty .subject, .empty .room { color: #98a2b3; }
.no-results { text-align: center; color: var(--muted); padding: 45px 10px; }
footer { color: var(--muted); text-align: center; margin-top: 40px; font-size: .85rem; }

.dark { --card: #141a24; --muted: #98a2b3; --border: #283244; --accent: #7c9cff; --accent-soft: #202d50; --empty: #111722; --bg: #0b0f15; color: #eef2f8; }
.dark body { background: #0b0f15; }

@media (max-width: 680px) {
  .container { padding-top: 22px; }
  .lesson { grid-template-columns: 1fr; gap: 7px; }
  .room { text-align: left; }
  .time { font-size: .9rem; }
  .search { min-width: 100%; }
}