/* ============================================================
   Кампус TMA — Design System
   Palette: deep indigo / violet primary, amber accent for urgency.
   All interactive colour comes from --c-* tokens, not tg-* vars,
   so the app has its own identity while still honouring Telegram
   light/dark correctly.
   ============================================================ */

/* ── Custom palette ─────────────────────────────────────────── */
:root {
  /* Brand */
  --c-primary:        #5c3ef4;   /* deep indigo */
  --c-primary-soft:   #7b5ff6;
  --c-primary-dim:    rgba(92, 62, 244, 0.12);
  --c-accent:         #f5a623;   /* warm amber  */
  --c-accent-dim:     rgba(245, 166, 35, 0.15);

  /* Semantic */
  --c-destructive:    #e53935;
  --c-destructive-dim:rgba(229, 57, 53, 0.12);
  --c-warning:        #f5a623;
  --c-success:        #2ec27e;
  --c-success-dim:    rgba(46, 194, 126, 0.14);

  /* Surfaces (light) */
  --c-bg:             #f6f5fb;
  --c-surface:        #ffffff;
  --c-surface-raised: #ffffff;
  --c-border:         rgba(92, 62, 244, 0.10);
  --c-border-subtle:  rgba(0, 0, 0, 0.06);

  /* Text (light) */
  --c-text:           #16113a;
  --c-text-secondary: #5f596e;
  --c-text-hint:      #9b96a8;

  /* Telegram theme passthrough (used only for MainButton shim colour) */
  --bg:             var(--c-bg);
  --text:           var(--c-text);
  --hint:           var(--c-text-hint);
  --link:           var(--c-primary);
  --btn:            var(--c-primary);
  --btn-text:       #ffffff;
  --secondary-bg:   var(--c-surface);

  /* Spacing */
  --sp-1: 4px;
  --sp-2: 8px;
  --sp-3: 12px;
  --sp-4: 16px;
  --sp-5: 20px;
  --sp-6: 24px;
  --sp-8: 32px;

  /* Radius */
  --r-s:    8px;
  --r-m:    14px;
  --r-l:    20px;
  --r-xl:   28px;
  --r-full: 999px;

  /* Typography */
  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
  --ts-xs:  11px;
  --ts-s:   13px;
  --ts-m:   15px;
  --ts-l:   18px;
  --ts-xl:  22px;
  --ts-2xl: 28px;

  /* Shadows */
  --shadow-card:   0 1px 4px rgba(22, 17, 58, 0.07), 0 4px 16px rgba(92, 62, 244, 0.06);
  --shadow-hero:   0 8px 32px rgba(92, 62, 244, 0.28), 0 2px 8px rgba(92, 62, 244, 0.16);
  --shadow-tab:    0 -1px 0 var(--c-border-subtle), 0 -8px 24px rgba(22, 17, 58, 0.04);
}

/* ── Dark theme ──────────────────────────────────────────────── */
[data-theme="dark"] {
  --c-bg:             #100e1f;
  --c-surface:        #1c1829;
  --c-surface-raised: #261f3a;
  --c-border:         rgba(124, 100, 248, 0.18);
  --c-border-subtle:  rgba(255, 255, 255, 0.06);

  --c-text:           #f0eeff;
  --c-text-secondary: #aaa0c4;
  --c-text-hint:      #8278a0;

  --c-primary-dim:    rgba(92, 62, 244, 0.22);
  --c-accent-dim:     rgba(245, 166, 35, 0.18);
  --c-destructive-dim:rgba(229, 57, 53, 0.18);
  --c-success-dim:    rgba(46, 194, 126, 0.18);

  --bg:             var(--c-bg);
  --text:           var(--c-text);
  --hint:           var(--c-text-hint);
  --btn:            var(--c-primary-soft);
  --secondary-bg:   var(--c-surface);

  --shadow-card:   0 1px 4px rgba(0,0,0,0.3), 0 4px 16px rgba(92, 62, 244, 0.10);
  --shadow-hero:   0 8px 32px rgba(92, 62, 244, 0.38), 0 2px 8px rgba(92, 62, 244, 0.22);
  --shadow-tab:    0 -1px 0 var(--c-border-subtle), 0 -8px 24px rgba(0,0,0,0.20);
}

/* ── Reset ───────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  font-family: var(--font);
  background: var(--c-bg);
  color: var(--c-text);
  line-height: 1.5;
  min-height: 100vh;
  padding-bottom: calc(env(safe-area-inset-bottom) + 64px);
  overscroll-behavior-y: contain;
  -webkit-font-smoothing: antialiased;
  transition: background 0.25s, color 0.25s;
}

/* ── Layout ──────────────────────────────────────────────────── */
#app {
  max-width: 480px;
  margin: 0 auto;
}

.screen {
  display: none;
  padding: var(--sp-4);
  padding-top: var(--sp-3);
  min-height: calc(100vh - 64px);
}
.screen.active { display: block; }

/* ── Preview banner ──────────────────────────────────────────── */
#preview-banner {
  display: none;
  background: var(--c-primary-dim);
  color: var(--c-primary);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  text-align: center;
  padding: 4px var(--sp-4);
}

/* ── App header ──────────────────────────────────────────────── */
#app-header {
  max-width: 480px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--sp-4) var(--sp-4) var(--sp-2);
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
}
.brand-mark {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--c-primary) 0%, #9f6bff 100%);
  color: #fff;
  font-size: 19px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  letter-spacing: -0.02em;
  box-shadow: 0 4px 12px rgba(92, 62, 244, 0.30);
  user-select: none;
}
.brand-name {
  font-size: var(--ts-l);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.15;
  color: var(--c-text);
}
.brand-sub {
  font-size: var(--ts-xs);
  font-weight: 600;
  color: var(--c-text-hint);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

/* ── Preview controls (theme toggle, inline in header) ───────── */
#preview-controls {
  display: none;
  align-items: center;
  gap: var(--sp-2);
}
#preview-controls button {
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--c-surface);
  color: var(--c-text-secondary);
  border: 1px solid var(--c-border-subtle);
  border-radius: var(--r-full);
  font-family: var(--font);
  cursor: pointer;
  box-shadow: var(--shadow-card);
  transition: background 0.18s, color 0.18s, transform 0.15s;
  -webkit-tap-highlight-color: transparent;
}
#preview-controls button:hover {
  background: var(--c-primary-dim);
  color: var(--c-primary);
}
#preview-controls button:active { transform: scale(0.94); }

/* ── Group picker ────────────────────────────────────────────── */
.group-row {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  margin-bottom: var(--sp-4);
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--r-m);
  padding: var(--sp-2) var(--sp-3) var(--sp-2) var(--sp-4);
  box-shadow: var(--shadow-card);
}
.group-row label {
  font-size: var(--ts-xs);
  font-weight: 600;
  color: var(--c-text-hint);
  text-transform: uppercase;
  letter-spacing: 0.07em;
  white-space: nowrap;
}
.group-select-wrap {
  flex: 1;
  position: relative;
  display: flex;
  align-items: center;
}
.group-select {
  flex: 1;
  width: 100%;
  background: transparent;
  color: var(--c-text);
  border: none;
  font-size: var(--ts-m);
  font-weight: 600;
  font-family: var(--font);
  appearance: none;
  -webkit-appearance: none;
  cursor: pointer;
  outline: none;
  min-height: 36px;
  padding-right: var(--sp-5);
}
.group-chevron {
  position: absolute;
  right: var(--sp-1);
  color: var(--c-text-hint);
  pointer-events: none;
}

/* ── Hero "next class" card ──────────────────────────────────── */
.hero-card {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, var(--c-primary) 0%, #7c4af8 55%, #9f6bff 100%);
  color: #fff;
  border-radius: var(--r-xl);
  padding: var(--sp-6) var(--sp-5) var(--sp-5);
  margin-bottom: var(--sp-4);
  box-shadow: var(--shadow-hero);
  transition: box-shadow 0.3s;
}

/* Decorative orb in the corner */
.hero-card::before {
  content: '';
  position: absolute;
  top: -40px;
  right: -40px;
  width: 160px;
  height: 160px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 50%;
  pointer-events: none;
}
.hero-card::after {
  content: '';
  position: absolute;
  bottom: -30px;
  right: 40px;
  width: 90px;
  height: 90px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 50%;
  pointer-events: none;
}

.hero-card.no-class {
  background: var(--c-surface);
  color: var(--c-text);
  box-shadow: var(--shadow-card);
}
.hero-card.no-class::before,
.hero-card.no-class::after { display: none; }

.hero-top-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-2);
  margin-bottom: var(--sp-3);
}
.hero-date {
  font-size: var(--ts-xs);
  font-weight: 600;
  opacity: 0.75;
  letter-spacing: 0.02em;
  white-space: nowrap;
}
.hero-card.no-class .hero-date { color: var(--c-text-hint); opacity: 1; }

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: rgba(255, 255, 255, 0.18);
  border-radius: var(--r-full);
  padding: 3px 10px 3px 8px;
  font-size: var(--ts-xs);
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: var(--sp-3);
}
.hero-badge svg {
  flex-shrink: 0;
  opacity: 0.9;
}
.hero-badge { margin-bottom: 0; }

.hero-chip.hero-chip-countdown {
  background: rgba(255, 255, 255, 0.92);
  color: var(--c-primary);
  font-weight: 700;
}
.hero-card.no-class .hero-chip.hero-chip-countdown {
  background: var(--c-primary-dim);
  color: var(--c-primary);
}
.hero-card.no-class .hero-badge {
  background: var(--c-primary-dim);
  color: var(--c-primary);
}

.hero-subject {
  font-size: var(--ts-xl);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.25;
  margin-bottom: var(--sp-3);
}

.hero-meta-row {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  flex-wrap: wrap;
}

.hero-chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: rgba(255, 255, 255, 0.15);
  border-radius: var(--r-full);
  padding: 4px 10px;
  font-size: var(--ts-s);
  font-weight: 500;
}
.hero-chip svg { opacity: 0.85; }

.hero-card.no-class .hero-subject { font-size: var(--ts-l); }
.hero-card.no-class .hero-chip {
  background: var(--c-primary-dim);
  color: var(--c-primary);
}

/* "Now" state — a subtle pulse ring */
.hero-card.now-state::before {
  animation: hero-pulse 3s ease-in-out infinite;
}
@keyframes hero-pulse {
  0%, 100% { transform: scale(1); opacity: 0.08; }
  50%       { transform: scale(1.08); opacity: 0.14; }
}

/* ── Day pills ───────────────────────────────────────────────── */
.day-tabs {
  display: flex;
  gap: var(--sp-2);
  margin-bottom: var(--sp-4);
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
  padding-bottom: 2px;
}
.day-tabs::-webkit-scrollbar { display: none; }

.day-tab {
  flex: 1;
  flex-shrink: 0;
  min-width: 46px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1px;
  background: var(--c-surface);
  color: var(--c-text-secondary);
  border: 1px solid var(--c-border-subtle);
  border-radius: var(--r-m);
  padding: 7px 6px 6px;
  font-family: var(--font);
  cursor: pointer;
  transition: background 0.18s, color 0.18s, border-color 0.18s, box-shadow 0.18s;
  -webkit-tap-highlight-color: transparent;
}
.day-tab .day-name {
  font-size: var(--ts-xs);
  font-weight: 600;
  letter-spacing: 0.03em;
  line-height: 1.2;
}
.day-tab .day-date {
  font-size: var(--ts-s);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.01em;
}
.day-tab.today .day-name { color: var(--c-accent); }
.day-tab.today {
  border-color: var(--c-border);
}
.day-tab.active {
  background: var(--c-primary);
  color: #fff;
  border-color: var(--c-primary);
  box-shadow: 0 3px 10px rgba(92, 62, 244, 0.32);
}
.day-tab.active .day-name { color: rgba(255, 255, 255, 0.75); }
.day-tab.active.today .day-name { color: #ffd089; }
.day-tab:not(.active):hover {
  background: var(--c-primary-dim);
  color: var(--c-primary);
  border-color: var(--c-border);
}

/* ── Schedule list — timeline rail ──────────────────────────── */
.schedule-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.class-item {
  background: var(--c-surface);
  border-radius: var(--r-m);
  padding: var(--sp-3) var(--sp-4);
  display: grid;
  grid-template-columns: 52px 1fr;
  gap: var(--sp-3);
  margin-bottom: var(--sp-3);
  border: 1px solid var(--c-border-subtle);
  box-shadow: var(--shadow-card);
  position: relative;
  transition: box-shadow 0.18s, border-color 0.18s;
}
.class-item:hover {
  box-shadow: 0 2px 12px rgba(92, 62, 244, 0.12), var(--shadow-card);
  border-color: var(--c-border);
}

/* Left accent stripe */
.class-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  bottom: 10px;
  width: 3px;
  background: var(--c-primary);
  border-radius: 0 var(--r-s) var(--r-s) 0;
  opacity: 0.5;
}
.class-item.is-current::before {
  opacity: 1;
  background: var(--c-accent);
}
.class-item.is-past::before {
  opacity: 0.2;
}
.class-item.is-past {
  opacity: 0.6;
}

.class-time-col {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  padding-top: 2px;
  gap: 2px;
}
.class-pair {
  font-size: var(--ts-xs);
  font-weight: 700;
  color: var(--c-primary);
  background: var(--c-primary-dim);
  border-radius: var(--r-full);
  padding: 1px 6px;
  letter-spacing: 0.02em;
  white-space: nowrap;
}
.class-item.is-past .class-pair {
  color: var(--c-text-hint);
  background: transparent;
}
.class-time {
  font-size: var(--ts-xs);
  font-weight: 500;
  color: var(--c-text-hint);
  line-height: 1.3;
  text-align: right;
  white-space: nowrap;
}

.class-body { min-width: 0; }
.class-subject {
  font-size: var(--ts-m);
  font-weight: 600;
  color: var(--c-text);
  line-height: 1.3;
  margin-bottom: 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.class-meta {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  flex-wrap: wrap;
}
.class-meta-chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: var(--ts-xs);
  color: var(--c-text-secondary);
}
.class-meta-chip svg { opacity: 0.6; flex-shrink: 0; }
.class-meta-chip + .class-meta-chip::before {
  content: '·';
  color: var(--c-text-hint);
  margin-right: var(--sp-2);
}

/* "now" badge on current class */
.class-now-badge {
  display: inline-block;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #fff;
  background: var(--c-accent);
  border-radius: var(--r-full);
  padding: 1px 6px;
  margin-left: var(--sp-2);
  vertical-align: middle;
}

.empty-day {
  text-align: center;
  color: var(--c-text-secondary);
  font-size: var(--ts-m);
  padding: var(--sp-8) 0 var(--sp-6);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-3);
}
.empty-day .empty-icon-wrap {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: var(--c-primary-dim);
  color: var(--c-primary);
  display: flex;
  align-items: center;
  justify-content: center;
}
.empty-day svg { opacity: 0.8; }

/* End-of-day footer under the class list */
.day-end {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  color: var(--c-text-hint);
  font-size: var(--ts-xs);
  font-weight: 500;
  margin-top: var(--sp-2);
  padding: 0 var(--sp-2);
}
.day-end::before,
.day-end::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--c-border-subtle);
}

/* ── Section header ─────────────────────────────────────────── */
.section-header {
  font-size: var(--ts-xs);
  font-weight: 700;
  color: var(--c-text-hint);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0 var(--sp-1);
  margin-bottom: var(--sp-2);
  margin-top: var(--sp-5);
}
.section-header:first-child { margin-top: 0; }

/* ── Bottom tab bar ──────────────────────────────────────────── */
#tab-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: calc(64px + env(safe-area-inset-bottom));
  padding-bottom: env(safe-area-inset-bottom);
  background: var(--c-surface);
  box-shadow: var(--shadow-tab);
  display: flex;
  z-index: 100;
  max-width: 480px;
  margin: 0 auto;
  /* center the bar itself */
  left: 50%;
  transform: translateX(-50%);
  right: auto;
  width: 100%;
}
/* On narrow: override back to full width */
@media (max-width: 480px) {
  #tab-bar {
    left: 0;
    right: 0;
    transform: none;
    max-width: 100%;
  }
}

.tab-btn {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--c-text-hint);
  font-size: var(--ts-xs);
  font-weight: 500;
  font-family: var(--font);
  padding: var(--sp-2) 0 var(--sp-3);
  transition: color 0.2s;
  -webkit-tap-highlight-color: transparent;
  position: relative;
  letter-spacing: 0.01em;
}

.tab-btn .tab-icon {
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--r-s);
  transition: background 0.2s, transform 0.18s;
}
.tab-btn.active .tab-icon {
  background: var(--c-primary-dim);
  transform: translateY(-1px);
}
.tab-btn.active {
  color: var(--c-primary);
}
.tab-btn.active svg { color: var(--c-primary); }
.tab-btn svg { color: var(--c-text-hint); transition: color 0.2s; }

/* Active indicator dot */
.tab-btn.active::after {
  content: '';
  position: absolute;
  bottom: 10px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--c-primary);
}

/* ── Deadlines screen ────────────────────────────────────────── */
.deadlines-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--sp-4);
}
.deadlines-header h1 {
  font-size: var(--ts-xl);
  font-weight: 700;
  color: var(--c-text);
  letter-spacing: -0.02em;
}
.deadline-count {
  background: var(--c-primary-dim);
  color: var(--c-primary);
  font-size: var(--ts-s);
  font-weight: 700;
  border-radius: var(--r-full);
  padding: 2px 10px;
  min-width: 26px;
  text-align: center;
}

.deadline-list {
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
}

.deadline-item {
  background: var(--c-surface);
  border-radius: var(--r-m);
  padding: var(--sp-4);
  display: flex;
  align-items: flex-start;
  gap: var(--sp-4);
  border: 1px solid var(--c-border-subtle);
  box-shadow: var(--shadow-card);
  position: relative;
  overflow: hidden;
  transition: box-shadow 0.18s;
}
.deadline-item:hover {
  box-shadow: 0 2px 12px rgba(92, 62, 244, 0.10), var(--shadow-card);
}

/* Urgency left stripe */
.deadline-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--c-primary);
  opacity: 0.4;
}
.deadline-item.soon::before  { background: var(--c-warning); opacity: 0.8; }
.deadline-item.overdue::before { background: var(--c-destructive); opacity: 0.9; }

.deadline-badge {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-width: 48px;
  height: 48px;
  border-radius: var(--r-m);
  background: var(--c-primary-dim);
  flex-shrink: 0;
}
.deadline-item.soon .deadline-badge   { background: var(--c-accent-dim); }
.deadline-item.overdue .deadline-badge { background: var(--c-destructive-dim); }

.deadline-days {
  font-size: var(--ts-l);
  font-weight: 800;
  line-height: 1;
  color: var(--c-primary);
  letter-spacing: -0.03em;
}
.deadline-item.soon .deadline-days    { color: var(--c-warning); }
.deadline-item.overdue .deadline-days { color: var(--c-destructive); }

.deadline-days-label {
  font-size: 9px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--c-text-hint);
  margin-top: 1px;
}

.deadline-body { flex: 1; min-width: 0; }
.deadline-title {
  font-size: var(--ts-m);
  font-weight: 700;
  color: var(--c-text);
  line-height: 1.3;
  margin-bottom: 3px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.deadline-course {
  font-size: var(--ts-s);
  color: var(--c-text-secondary);
  margin-bottom: 4px;
}
.deadline-date-row {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: var(--ts-xs);
  color: var(--c-text-hint);
}
.deadline-date-row svg { opacity: 0.6; }

.deadline-delete {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--c-text-hint);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: var(--r-s);
  flex-shrink: 0;
  transition: background 0.18s, color 0.18s;
  -webkit-tap-highlight-color: transparent;
}
.deadline-delete:hover {
  background: var(--c-destructive-dim);
  color: var(--c-destructive);
}

/* Empty states */
.empty-deadlines {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-2);
  text-align: center;
  color: var(--c-text-secondary);
  padding: var(--sp-8) var(--sp-4);
}
.empty-deadlines .empty-icon-wrap {
  width: 88px;
  height: 88px;
  border-radius: 50%;
  background: var(--c-accent-dim);
  color: var(--c-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--sp-2);
}
.empty-deadlines svg { opacity: 0.9; }
.empty-deadlines strong {
  font-size: var(--ts-l);
  font-weight: 700;
  color: var(--c-text);
  letter-spacing: -0.01em;
}
.empty-deadlines small {
  font-size: var(--ts-s);
  line-height: 1.45;
  max-width: 230px;
}

/* ── Add deadline form ───────────────────────────────────────── */
#deadline-form {
  display: none;
}
#deadline-form.active { display: block; }

.form-header {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  margin-bottom: var(--sp-5);
}
#deadline-form h1 {
  font-size: var(--ts-xl);
  font-weight: 700;
  letter-spacing: -0.02em;
}
#form-back {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--c-surface);
  color: var(--c-text-secondary);
  border: 1px solid var(--c-border-subtle);
  border-radius: var(--r-full);
  cursor: pointer;
  flex-shrink: 0;
  box-shadow: var(--shadow-card);
  transition: background 0.18s, color 0.18s, transform 0.15s;
  -webkit-tap-highlight-color: transparent;
}
#form-back:hover {
  background: var(--c-primary-dim);
  color: var(--c-primary);
}
#form-back:active { transform: scale(0.94); }

.form-group {
  margin-bottom: var(--sp-4);
}
.form-group label {
  display: block;
  font-size: var(--ts-xs);
  font-weight: 700;
  color: var(--c-text-hint);
  text-transform: uppercase;
  letter-spacing: 0.07em;
  margin-bottom: var(--sp-2);
}
.form-group input,
.form-group select {
  width: 100%;
  background: var(--c-surface);
  color: var(--c-text);
  border: 1.5px solid var(--c-border);
  border-radius: var(--r-m);
  padding: 10px var(--sp-4);
  font-size: var(--ts-m);
  font-family: var(--font);
  appearance: none;
  -webkit-appearance: none;
  transition: border-color 0.18s, box-shadow 0.18s;
}
.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--c-primary);
  box-shadow: 0 0 0 3px var(--c-primary-dim);
}
.form-group input[type="date"]::-webkit-calendar-picker-indicator {
  filter: invert(0.5);
  cursor: pointer;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}