/* ================================================================
   SGED — Sistema de Gestão de Diários de Educação
   Design System · Dual Theme (Clean Light / Dark Modern)
   ================================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=Space+Grotesk:wght@500;600;700;800&display=swap');

/* ── Light Theme (Default) ───────────────────────────────────── */
:root {
  --bg-base:       #f6f8fb;
  --bg-card:       #ffffff;
  --bg-elevated:   #ffffff;
  --bg-hover:      #f0f4f9;
  --bg-input:      #f8fafc;
  --bg-sidebar:    #ffffff;
  --bg-topbar:     rgba(255, 255, 255, 0.94);
  --bg-backdrop:   rgba(15, 23, 42, 0.4);

  --accent:        #2563eb;
  --accent-light:  #3b82f6;
  --accent-dark:   #1d4ed8;
  --accent-glow:   rgba(37, 99, 235, 0.18);
  --accent-soft:   rgba(37, 99, 235, 0.08);

  --success:       #10b981;
  --success-soft:  rgba(16, 185, 129, 0.1);
  --danger:        #ef4444;
  --danger-soft:   rgba(239, 68, 68, 0.09);
  --warning:       #f59e0b;
  --warning-soft:  rgba(245, 158, 11, 0.1);
  --info:          #0284c7;
  --info-soft:     rgba(2, 132, 199, 0.09);

  --text-primary:  #0f172a;
  --text-secondary:#475569;
  --text-muted:    #94a3b8;
  --text-accent:   #2563eb;

  --border:        #e2e8f0;
  --border-bright: #cbd5e1;

  --shadow-xs:     0 1px 2px 0 rgba(0, 0, 0, 0.04);
  --shadow-card:   0 1px 3px 0 rgba(0, 0, 0, 0.04), 0 1px 2px -1px rgba(0, 0, 0, 0.03);
  --shadow-md:     0 4px 12px -2px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.04);
  --shadow-lg:     0 12px 24px -4px rgba(0, 0, 0, 0.09), 0 4px 6px -4px rgba(0, 0, 0, 0.03);
  --shadow-xl:     0 20px 30px -6px rgba(0, 0, 0, 0.1), 0 8px 12px -6px rgba(0, 0, 0, 0.04);
  --shadow-glow:   0 0 18px var(--accent-glow);

  --radius-xs:     6px;
  --radius-sm:     8px;
  --radius-md:     12px;
  --radius-lg:     16px;
  --radius-xl:     20px;

  --sidebar-w:     265px;
  --panel-w:       310px;

  --transition:    all 0.18s cubic-bezier(0.4, 0, 0.2, 1);
  --theme-transition: background-color 0.25s ease, border-color 0.25s ease, color 0.25s ease, box-shadow 0.25s ease;

  --chart-grid:    rgba(0, 0, 0, 0.05);
  --chart-text:    #475569;
  --chart-planned: #cbd5e1;
}

/* ── Dark Theme Override ─────────────────────────────────────── */
[data-theme="dark"] {
  --bg-base:       #090d16;
  --bg-card:       #111726;
  --bg-elevated:   #172033;
  --bg-hover:      #1c263d;
  --bg-input:      #0d1320;
  --bg-sidebar:    #0d121f;
  --bg-topbar:     rgba(13, 18, 31, 0.94);
  --bg-backdrop:   rgba(0, 0, 0, 0.75);

  --accent:        #3b82f6;
  --accent-light:  #60a5fa;
  --accent-dark:   #2563eb;
  --accent-glow:   rgba(59, 130, 246, 0.25);
  --accent-soft:   rgba(59, 130, 246, 0.15);

  --success:       #34d399;
  --success-soft:  rgba(52, 211, 153, 0.15);
  --danger:        #f87171;
  --danger-soft:   rgba(248, 113, 113, 0.15);
  --warning:       #fbbf24;
  --warning-soft:  rgba(251, 191, 36, 0.15);
  --info:          #38bdf8;
  --info-soft:     rgba(56, 189, 248, 0.15);

  --text-primary:  #f8fafc;
  --text-secondary:#94a3b8;
  --text-muted:    #64748b;
  --text-accent:   #60a5fa;

  --border:        rgba(255, 255, 255, 0.08);
  --border-bright: rgba(255, 255, 255, 0.16);

  --shadow-xs:     0 1px 2px 0 rgba(0, 0, 0, 0.3);
  --shadow-card:   0 1px 3px 0 rgba(0, 0, 0, 0.35), 0 1px 2px -1px rgba(0, 0, 0, 0.2);
  --shadow-md:     0 4px 14px 0 rgba(0, 0, 0, 0.4);
  --shadow-lg:     0 12px 28px -3px rgba(0, 0, 0, 0.5);
  --shadow-xl:     0 22px 35px -5px rgba(0, 0, 0, 0.65);
  --shadow-glow:   0 0 22px var(--accent-glow);

  --chart-grid:    rgba(255, 255, 255, 0.06);
  --chart-text:    #94a3b8;
  --chart-planned: #243049;
}

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

html, body {
  height: 100%;
  overflow: hidden;
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  font-size: 14px;
  background-color: var(--bg-base);
  color: var(--text-primary);
  -webkit-font-smoothing: antialiased;
  transition: var(--theme-transition);
}

/* ── Scrollbar ───────────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-bright); border-radius: 99px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ── Theme Toggle Button ─────────────────────────────────────── */
.theme-toggle {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  padding: 0;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition);
  flex-shrink: 0;
  box-shadow: var(--shadow-xs);
}

.theme-toggle:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-soft);
  box-shadow: var(--shadow-glow);
  transform: translateY(-1px);
}

.theme-toggle:active { transform: translateY(0); }

.theme-toggle .icon-sun {
  display: block;
  width: 18px;
  height: 18px;
  color: #f59e0b;
}

.theme-toggle .icon-moon {
  display: none;
  width: 18px;
  height: 18px;
  color: #60a5fa;
}

[data-theme="dark"] .theme-toggle .icon-sun { display: none; }
[data-theme="dark"] .theme-toggle .icon-moon { display: block; }

/* ── Layout Shell ────────────────────────────────────────────── */
.app-shell {
  display: flex;
  height: 100vh;
  overflow: hidden;
  position: relative;
}

/* ── Sidebar ─────────────────────────────────────────────────── */
.sidebar {
  width: var(--sidebar-w);
  min-width: var(--sidebar-w);
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  height: 100%;
  overflow: hidden;
  z-index: 20;
  transition: var(--theme-transition), width 0.25s ease, transform 0.25s ease;
}

.sidebar.collapsed {
  width: 0;
  min-width: 0;
  transform: translateX(-100%);
  border-right: none;
}

.sidebar-brand {
  padding: 16px 18px 14px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 4px;
}

.sidebar-logo-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--accent), #7c3aed);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 3px 10px var(--accent-glow);
}

.sidebar-logo-icon svg { width: 20px; height: 20px; color: #fff; }

.sidebar-logo-text {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 18px;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.5px;
}

.sidebar-logo-sub {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-left: 46px;
}

.sidebar-status {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 10px;
  font-size: 11px;
  font-weight: 600;
  color: var(--success);
  letter-spacing: 0.3px;
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--success);
  animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(16,185,129,0.4); }
  50%       { opacity: 0.7; box-shadow: 0 0 0 5px rgba(16,185,129,0); }
}

/* ── Sidebar Nav ─────────────────────────────────────────────── */
.sidebar-nav {
  padding: 10px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 13px;
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition);
  border: none;
  background: none;
  width: 100%;
  text-align: left;
  user-select: none;
  position: relative;
}

.nav-item svg { width: 17px; height: 17px; flex-shrink: 0; }

.nav-item:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.nav-item.active {
  background: var(--accent-soft);
  color: var(--accent);
  box-shadow: inset 0 0 0 1px rgba(37,99,235,0.12);
}

.nav-item.active::before {
  content: '';
  position: absolute;
  left: 0; top: 4px; bottom: 4px;
  width: 3px;
  background: var(--accent);
  border-radius: 0 2px 2px 0;
}

.nav-item .nav-badge {
  margin-left: auto;
  background: var(--danger);
  color: #fff;
  font-size: 10px;
  font-weight: 800;
  padding: 1px 6px;
  border-radius: 99px;
  min-width: 18px;
  text-align: center;
}

/* ── Sidebar Search ──────────────────────────────────────────── */
.sidebar-search {
  padding: 10px 10px 0;
  flex-shrink: 0;
}

.search-input-wrap {
  position: relative;
}

.search-input-wrap svg {
  position: absolute;
  left: 10px; top: 50%;
  transform: translateY(-50%);
  width: 15px; height: 15px;
  color: var(--text-muted);
  pointer-events: none;
}

.search-input-wrap input {
  width: 100%;
  padding: 8px 10px 8px 32px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 12.5px;
  font-weight: 500;
  outline: none;
  transition: var(--transition);
  font-family: 'Inter', sans-serif;
}

.search-input-wrap input::placeholder { color: var(--text-muted); }

.search-input-wrap input:focus {
  border-color: var(--accent);
  background: var(--bg-card);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.sidebar-section-label {
  padding: 14px 18px 6px;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--text-muted);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* ── Class List ──────────────────────────────────────────────── */
.class-list {
  flex: 1;
  overflow-y: auto;
  padding: 4px 10px 12px;
}

.class-item {
  display: flex;
  align-items: center;
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
  border: 1px solid transparent;
  margin-bottom: 3px;
  position: relative;
  background: none;
  width: 100%;
  text-align: left;
  gap: 10px;
}

.class-item:hover { background: var(--bg-hover); border-color: var(--border); }

.class-item.active {
  background: var(--accent-soft);
  border-color: rgba(37,99,235,0.18);
  box-shadow: var(--shadow-glow);
}

.class-item-avatar {
  width: 32px; height: 32px;
  border-radius: var(--radius-sm);
  background: var(--bg-hover);
  display: flex; align-items: center; justify-content: center;
  font-size: 11.5px; font-weight: 800;
  color: var(--text-muted);
  flex-shrink: 0;
  text-transform: uppercase;
  border: 1px solid var(--border);
}

.class-item.active .class-item-avatar {
  background: linear-gradient(135deg, var(--accent), #7c3aed);
  color: #fff;
  border-color: transparent;
}

.class-item-info { flex: 1; min-width: 0; }

.class-item-name {
  font-size: 12.5px;
  font-weight: 700;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.class-item.active .class-item-name { color: var(--text-accent); }

.class-item-disc {
  font-size: 10.5px;
  font-weight: 500;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-top: 1px;
}

.class-item-pending {
  background: var(--danger);
  color: #fff;
  font-size: 10px;
  font-weight: 800;
  padding: 2px 6px;
  border-radius: 99px;
  flex-shrink: 0;
  min-width: 20px;
  text-align: center;
}

/* ── Main Area ───────────────────────────────────────────────── */
.main-area {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--bg-base);
  min-width: 0;
  transition: var(--theme-transition);
}

/* ── Topbar ──────────────────────────────────────────────────── */
.topbar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 18px;
  height: 56px;
  background: var(--bg-topbar);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  z-index: 10;
  transition: var(--theme-transition);
}

.topbar-sidebar-toggle {
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  padding: 6px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}
.topbar-sidebar-toggle:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
  border-color: var(--border-bright);
}

.topbar-title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 320px;
}

.topbar-subtitle {
  font-size: 11px;
  font-weight: 600;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid rgba(37,99,235,0.15);
  padding: 2px 8px;
  border-radius: 5px;
  white-space: nowrap;
}

.topbar-search-wrap {
  flex: 1;
  max-width: 380px;
  margin-left: auto;
  position: relative;
}

.topbar-search-wrap svg.search-icon {
  position: absolute;
  left: 11px; top: 50%;
  transform: translateY(-50%);
  width: 15px; height: 15px;
  color: var(--text-muted);
  pointer-events: none;
}

.topbar-search {
  width: 100%;
  padding: 7px 32px 7px 32px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: 'Inter', sans-serif;
  font-size: 13px;
  outline: none;
  transition: var(--transition);
}

.topbar-search::placeholder { color: var(--text-muted); }

.topbar-search:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
  background: var(--bg-card);
}

.search-clear-btn {
  position: absolute;
  right: 8px; top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 2px;
  border-radius: 50%;
  display: none;
}
.search-clear-btn:hover { color: var(--text-primary); }

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.btn-quick-fix {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  background: linear-gradient(135deg, #ef4444, #f59e0b);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(239,68,68,0.25);
  transition: var(--transition);
  white-space: nowrap;
}
.btn-quick-fix:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(239,68,68,0.35);
}

.save-badge {
  font-size: 11.5px;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: var(--radius-xs);
  transition: var(--transition);
  opacity: 0;
}

.save-badge.saving { opacity: 1; background: var(--info-soft); color: var(--info); }
.save-badge.saved  { opacity: 1; background: var(--success-soft); color: var(--success); }
.save-badge.error  { opacity: 1; background: var(--danger-soft); color: var(--danger); }

/* ── Class Header Summary Card (in Diary View) ───────────────── */
.class-summary-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 14px 18px;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  box-shadow: var(--shadow-card);
  flex-wrap: wrap;
}

.class-summary-info {
  display: flex;
  align-items: center;
  gap: 12px;
}

.class-summary-stats {
  display: flex;
  align-items: center;
  gap: 14px;
}

.summary-stat-box {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
}
.summary-stat-num {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 16px;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1;
}
.summary-stat-lbl {
  font-size: 10px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-top: 2px;
}

/* ── Filter Bar on Diary Board ───────────────────────────────── */
.board-filter-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
  flex-wrap: wrap;
}

.filter-chips {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.filter-chip {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 5px 12px;
  border-radius: 99px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text-secondary);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.filter-chip:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.filter-chip.active {
  background: var(--accent-soft);
  border-color: var(--accent);
  color: var(--accent);
  font-weight: 700;
}

/* ── Month Tabs ──────────────────────────────────────────────── */
.month-tabs {
  display: flex;
  gap: 6px;
  padding: 8px 20px;
  background: var(--bg-topbar);
  border-bottom: 1px solid var(--border);
  overflow-x: auto;
  flex-shrink: 0;
}

.month-tab {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border-radius: 99px;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  border: 1px solid var(--border);
  background: none;
  transition: var(--transition);
  white-space: nowrap;
  flex-shrink: 0;
}

.month-tab:hover { background: var(--bg-hover); color: var(--text-primary); border-color: var(--border-bright); }

.month-tab.active {
  background: var(--accent);
  border-color: transparent;
  color: #fff;
  box-shadow: 0 2px 8px var(--accent-glow);
}

.month-tab.has-pending { border-color: rgba(239,68,68,0.4); }
.month-tab.has-pending .month-count { background: var(--danger); color: #fff; }

.month-count {
  font-size: 10px;
  font-weight: 800;
  background: rgba(0,0,0,0.06);
  padding: 1px 5px;
  border-radius: 99px;
}

[data-theme="dark"] .month-count { background: rgba(255,255,255,0.12); }
.month-tab.active .month-count { background: rgba(255,255,255,0.25); }

/* ── Board / Scroll Area ─────────────────────────────────────── */
.board {
  flex: 1;
  overflow-y: auto;
  padding: 20px;
}

/* ── Lesson Cards ────────────────────────────────────────────── */
.lesson-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  display: flex;
  overflow: hidden;
  margin-bottom: 12px;
  transition: var(--transition);
  position: relative;
  animation: fadeUp 0.2s ease both;
  box-shadow: var(--shadow-card);
}

.lesson-card:hover {
  border-color: var(--border-bright);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.lesson-card.pending { border-left: 3px solid var(--danger); }
.lesson-card.ok      { border-left: 3px solid var(--success); }
.lesson-card.eval    { border-left: 3px solid var(--warning); }

.lesson-date-badge {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 14px 16px;
  min-width: 82px;
  flex-shrink: 0;
}

.lesson-date-badge.pending { background: var(--danger-soft); }
.lesson-date-badge.ok      { background: var(--success-soft); }
.lesson-date-badge.eval    { background: var(--warning-soft); }
.lesson-date-badge.empty   { background: var(--bg-input); }

.lesson-date-month {
  font-size: 9.5px;
  font-weight: 800;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  opacity: 0.8;
  margin-bottom: 2px;
}

.lesson-date-badge.pending .lesson-date-month { color: var(--danger); }
.lesson-date-badge.ok      .lesson-date-month { color: var(--success); }
.lesson-date-badge.eval    .lesson-date-month { color: var(--warning); }

.lesson-date-day {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 26px;
  font-weight: 800;
  line-height: 1;
}

.lesson-date-badge.pending .lesson-date-day { color: var(--danger); }
.lesson-date-badge.ok      .lesson-date-day { color: var(--success); }
.lesson-date-badge.eval    .lesson-date-day { color: var(--warning); }
.lesson-date-badge.empty   .lesson-date-day { color: var(--text-muted); }

.lesson-body {
  flex: 1;
  padding: 14px 16px;
  min-width: 0;
  position: relative;
}

.lesson-tags {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 8px;
  flex-wrap: wrap;
}

.tag {
  font-size: 10.5px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 4px;
  letter-spacing: 0.2px;
}

.tag-content  { background: var(--bg-input); color: var(--text-secondary); border: 1px solid var(--border); }
.tag-ok       { background: var(--success-soft); color: var(--success); }
.tag-pending  { background: var(--danger-soft); color: var(--danger); }
.tag-eval     { background: var(--warning-soft); color: var(--warning); }

.lesson-text p {
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.lesson-text p.topic-line {
  font-size: 13px;
  font-weight: 700;
  color: var(--accent);
}

.lesson-text .empty-text {
  font-style: italic;
  color: var(--text-muted);
  font-size: 12.5px;
}

.lesson-actions {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 10px;
  justify-content: flex-end;
}

.pending-alert {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 11px;
  font-weight: 700;
  color: var(--danger);
  background: var(--danger-soft);
  border: 1px solid rgba(239,68,68,0.15);
  padding: 2px 8px;
  border-radius: 4px;
  margin-right: auto;
}

/* ── Buttons ─────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  font-size: 12.5px;
  font-weight: 700;
  cursor: pointer;
  border: 1px solid transparent;
  transition: var(--transition);
  outline: none;
  font-family: 'Inter', sans-serif;
  white-space: nowrap;
}

.btn svg { width: 14px; height: 14px; }

.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 2px 8px var(--accent-glow);
}
.btn-primary:hover { background: var(--accent-light); box-shadow: 0 4px 14px var(--accent-glow); transform: translateY(-1px); }
.btn-primary:active { transform: translateY(0); }

.btn-success {
  background: var(--success);
  color: #fff;
  box-shadow: 0 2px 8px rgba(16,185,129,0.25);
}
.btn-success:hover {
  background: #059669;
  transform: translateY(-1px);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border-color: var(--border);
}
.btn-ghost:hover { background: var(--bg-hover); color: var(--text-primary); border-color: var(--border-bright); }

.btn-edit {
  background: transparent;
  color: var(--accent);
  border-color: rgba(37,99,235,0.2);
}
.btn-edit:hover { background: var(--accent-soft); border-color: var(--accent); }

.btn-danger {
  background: transparent;
  color: var(--danger);
  border-color: rgba(239,68,68,0.2);
}
.btn-danger:hover { background: var(--danger-soft); border-color: var(--danger); }

.btn-action-icon {
  padding: 6px;
  border-radius: var(--radius-xs);
  border: 1px solid var(--border);
  background: var(--bg-input);
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
}
.btn-action-icon:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
  border-color: var(--border-bright);
}

.btn-add {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  padding: 12px;
  background: transparent;
  border: 2px dashed var(--border);
  border-radius: var(--radius-lg);
  color: var(--text-muted);
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition);
  font-family: 'Inter', sans-serif;
  margin-top: 4px;
}

.btn-add:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-soft);
}

/* ── Empty State ─────────────────────────────────────────────── */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 50px 20px;
  text-align: center;
  color: var(--text-muted);
}

.empty-state svg { width: 48px; height: 48px; margin-bottom: 12px; opacity: 0.35; }
.empty-state h3 { font-size: 15px; font-weight: 700; color: var(--text-secondary); margin-bottom: 4px; }
.empty-state p  { font-size: 13px; }

/* ── Dashboard ──────────────────────────────────────────────── */
.dashboard-grid {
  display: grid;
  gap: 16px;
}

.kpi-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

.kpi-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 16px 18px;
  position: relative;
  overflow: hidden;
  transition: var(--transition);
  box-shadow: var(--shadow-card);
}

.kpi-card:hover { border-color: var(--border-bright); transform: translateY(-2px); box-shadow: var(--shadow-md); }

.kpi-card-icon {
  width: 38px; height: 38px;
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 12px;
}

.kpi-card-icon svg { width: 18px; height: 18px; }

.kpi-card-icon.indigo  { background: var(--accent-soft); color: var(--accent); }
.kpi-card-icon.green   { background: var(--success-soft); color: var(--success); }
.kpi-card-icon.red     { background: var(--danger-soft); color: var(--danger); }
.kpi-card-icon.sky     { background: var(--info-soft); color: var(--info); }

.kpi-value {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 26px;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1;
  margin-bottom: 4px;
}

.kpi-label {
  font-size: 11px;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.kpi-sub {
  font-size: 11px;
  font-weight: 500;
  color: var(--text-muted);
  margin-top: 4px;
}

.kpi-card::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 2px;
}

.kpi-card.indigo::after { background: linear-gradient(90deg, var(--accent), #7c3aed); }
.kpi-card.green::after  { background: linear-gradient(90deg, var(--success), #059669); }
.kpi-card.red::after    { background: linear-gradient(90deg, var(--danger), #b91c1c); }
.kpi-card.sky::after    { background: linear-gradient(90deg, var(--info), #0369a1); }

/* ── Charts Row ──────────────────────────────────────────────── */
.charts-row {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 14px;
}

.chart-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 18px;
  box-shadow: var(--shadow-card);
}

.chart-card-title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 13.5px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.chart-card-title svg { width: 16px; height: 16px; color: var(--accent); }

.chart-legend {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 14px;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
}

.legend-dot {
  width: 9px; height: 9px;
  border-radius: 50%;
  flex-shrink: 0;
}

.legend-val {
  margin-left: auto;
  font-weight: 800;
  color: var(--text-primary);
}

/* ── Progress by Class ───────────────────────────────────────── */
.progress-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 18px;
  box-shadow: var(--shadow-card);
}

.progress-item {
  margin-bottom: 10px;
  cursor: pointer;
  padding: 6px 8px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}
.progress-item:hover {
  background: var(--bg-hover);
}
.progress-item:last-child { margin-bottom: 0; }

.progress-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 4px;
}

.progress-name {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 200px;
}

.progress-pct {
  font-size: 11px;
  font-weight: 800;
  color: var(--text-muted);
}

.progress-bar-bg {
  height: 6px;
  background: var(--bg-input);
  border-radius: 99px;
  overflow: hidden;
  border: 1px solid var(--border);
}

.progress-bar-fill {
  height: 100%;
  border-radius: 99px;
  background: linear-gradient(90deg, var(--accent), var(--success));
  transition: width 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.progress-bar-fill.danger { background: linear-gradient(90deg, var(--danger), var(--warning)); }

.progress-pending-badge {
  font-size: 10px;
  font-weight: 800;
  background: var(--danger-soft);
  color: var(--danger);
  padding: 1px 6px;
  border-radius: 4px;
}

/* ── Right Panel ─────────────────────────────────────────────── */
.right-panel {
  width: var(--panel-w);
  min-width: var(--panel-w);
  background: var(--bg-sidebar);
  border-left: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  height: 100%;
  overflow: hidden;
  transition: var(--theme-transition);
}

.right-panel-header {
  padding: 16px 16px 10px;
  border-bottom: 1px solid var(--border);
  font-family: 'Space Grotesk', sans-serif;
  font-size: 13px;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.right-panel-header svg { width: 16px; height: 16px; color: var(--accent); }

/* ── Mini Calendar ───────────────────────────────────────────── */
.mini-calendar {
  padding: 12px 14px 10px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.cal-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

.cal-month-label {
  font-size: 12px;
  font-weight: 800;
  color: var(--text-primary);
  text-transform: capitalize;
}

.cal-nav-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px;
  border-radius: 4px;
  transition: var(--transition);
  display: flex; align-items: center;
}

.cal-nav-btn:hover { background: var(--bg-hover); color: var(--text-primary); }
.cal-nav-btn svg { width: 14px; height: 14px; }

.cal-weekdays {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 2px;
  margin-bottom: 3px;
}

.cal-wd {
  text-align: center;
  font-size: 9.5px;
  font-weight: 700;
  color: var(--text-muted);
  padding: 2px 0;
  text-transform: uppercase;
}

.cal-days {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 2px;
}

.cal-day {
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 600;
  border-radius: 6px;
  cursor: default;
  transition: var(--transition);
  color: var(--text-muted);
  position: relative;
}

.cal-day.other-month { opacity: 0.25; }

.cal-day.today {
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 800;
  box-shadow: 0 0 0 1px rgba(37,99,235,0.25);
}

.cal-day.has-lesson { color: var(--text-secondary); cursor: pointer; }
.cal-day.has-lesson:hover { background: var(--bg-hover); }

.cal-day.all-ok {
  background: var(--success-soft);
  color: var(--success);
  cursor: pointer;
}

.cal-day.has-pending {
  background: var(--danger-soft);
  color: var(--danger);
  font-weight: 800;
  cursor: pointer;
}

/* ── Pending List ────────────────────────────────────────────── */
.pending-list-header {
  padding: 10px 14px 6px;
  font-size: 10.5px;
  font-weight: 800;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-shrink: 0;
}

.pending-count-badge {
  background: var(--danger);
  color: #fff;
  font-size: 10px;
  font-weight: 800;
  padding: 1px 6px;
  border-radius: 99px;
}

.pending-list {
  flex: 1;
  overflow-y: auto;
  padding: 4px 10px 14px;
}

.pending-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-left: 3px solid var(--danger);
  border-radius: var(--radius-sm);
  padding: 8px 10px;
  margin-bottom: 6px;
  transition: var(--transition);
  cursor: pointer;
  box-shadow: var(--shadow-xs);
}

.pending-item:hover { background: var(--bg-hover); border-color: rgba(239,68,68,0.3); transform: translateX(2px); }

.pending-item-date {
  font-size: 10.5px;
  font-weight: 800;
  color: var(--danger);
  display: flex;
  align-items: center;
  gap: 4px;
  margin-bottom: 2px;
}

.pending-item-class {
  font-size: 11.5px;
  font-weight: 700;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.pending-item-miss {
  font-size: 10px;
  font-weight: 500;
  color: var(--text-muted);
  margin-top: 2px;
}

.missing-tag {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  font-size: 9.5px;
  font-weight: 700;
  padding: 1px 5px;
  background: var(--danger-soft);
  color: var(--danger);
  border-radius: 3px;
  margin-right: 3px;
  margin-top: 2px;
}

/* ── Search Results View ─────────────────────────────────────── */
.search-results-view { padding: 20px; }

.search-result-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 12px 14px;
  margin-bottom: 8px;
  cursor: pointer;
  transition: var(--transition);
  animation: fadeUp 0.2s ease both;
  box-shadow: var(--shadow-xs);
}

.search-result-card:hover { border-color: var(--accent); background: var(--bg-hover); box-shadow: var(--shadow-md); }

.search-result-meta {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 6px;
  flex-wrap: wrap;
}

.search-result-class {
  font-size: 11px;
  font-weight: 700;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 2px 6px;
  border-radius: 4px;
}

.search-result-date {
  font-size: 11px;
  font-weight: 700;
  color: var(--text-muted);
}

.search-result-text {
  font-size: 12.5px;
  color: var(--text-secondary);
  line-height: 1.5;
}

.search-result-text mark {
  background: var(--warning-soft);
  color: var(--warning);
  border-radius: 2px;
  padding: 0 2px;
  font-weight: 600;
}

.search-empty {
  text-align: center;
  padding: 40px 20px;
  color: var(--text-muted);
}

.search-empty svg { width: 36px; height: 36px; margin: 0 auto 10px; display: block; opacity: 0.3; }
.search-empty p   { font-size: 13px; font-weight: 600; }

/* ── Plans View ──────────────────────────────────────────────── */
.plans-view { padding: 20px; }

.plan-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  margin-bottom: 10px;
  overflow: hidden;
  transition: var(--transition);
  box-shadow: var(--shadow-card);
}

.plan-card-header {
  padding: 14px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  transition: var(--transition);
}

.plan-card-header:hover { background: var(--bg-hover); }

.plan-card-title {
  display: flex;
  align-items: center;
  gap: 10px;
}

.plan-period-badge {
  background: linear-gradient(135deg, var(--accent), #7c3aed);
  color: #fff;
  font-size: 10px;
  font-weight: 800;
  padding: 3px 8px;
  border-radius: 4px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.plan-disc-name {
  font-size: 13.5px;
  font-weight: 700;
  color: var(--text-primary);
}

.plan-chevron {
  width: 18px; height: 18px;
  color: var(--text-muted);
  transition: transform 0.2s ease;
}

.plan-card.open .plan-chevron { transform: rotate(180deg); }

.plan-body {
  display: none;
  padding: 0 18px 18px;
  border-top: 1px solid var(--border);
}

.plan-card.open .plan-body { display: block; }

.plan-section { margin-top: 14px; }

.plan-section-title {
  font-size: 10.5px;
  font-weight: 800;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 5px;
}

.plan-section-title svg { width: 13px; height: 13px; }

.plan-section-text {
  font-size: 12.5px;
  color: var(--text-secondary);
  line-height: 1.6;
  white-space: pre-wrap;
}

/* ── Modal ───────────────────────────────────────────────────── */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: var(--bg-backdrop);
  backdrop-filter: blur(6px);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}

.modal-backdrop.open {
  opacity: 1;
  pointer-events: all;
}

.modal {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  width: 100%;
  max-width: 620px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-xl);
  transform: scale(0.97) translateY(8px);
  transition: transform 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.modal-backdrop.open .modal {
  transform: scale(1) translateY(0);
}

.modal-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-shrink: 0;
}

.modal-title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.modal-title svg { width: 17px; height: 17px; color: var(--accent); }

.modal-close {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px;
  border-radius: var(--radius-xs);
  transition: var(--transition);
  display: flex;
}

.modal-close:hover { background: var(--danger-soft); color: var(--danger); }
.modal-close svg { width: 18px; height: 18px; }

.modal-body {
  padding: 18px 20px;
  overflow-y: auto;
  flex: 1;
}

.form-row {
  display: flex;
  gap: 12px;
  margin-bottom: 14px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 5px;
  flex: 1;
}

.form-label {
  font-size: 11px;
  font-weight: 700;
  color: var(--text-secondary);
  letter-spacing: 0.2px;
}

.form-input, .form-textarea {
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  padding: 8px 12px;
  font-family: 'Inter', sans-serif;
  font-size: 13px;
  font-weight: 500;
  outline: none;
  transition: var(--transition);
}

.form-input::placeholder, .form-textarea::placeholder { color: var(--text-muted); }

.form-input:focus, .form-textarea:focus {
  border-color: var(--accent);
  background: var(--bg-card);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.form-textarea { resize: none; line-height: 1.5; }

.form-snippet-chips {
  display: flex;
  gap: 6px;
  margin-bottom: 8px;
  flex-wrap: wrap;
}

.snippet-btn {
  padding: 3px 8px;
  font-size: 11px;
  font-weight: 600;
  border-radius: 4px;
  border: 1px solid var(--border);
  background: var(--bg-input);
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition);
}

.snippet-btn:hover {
  background: var(--accent-soft);
  border-color: var(--accent);
  color: var(--accent);
}

.form-hint {
  display: flex;
  align-items: flex-start;
  gap: 5px;
  padding: 7px 10px;
  background: var(--info-soft);
  border: 1px solid rgba(2, 132, 199, 0.12);
  border-radius: var(--radius-sm);
  font-size: 11px;
  font-weight: 600;
  color: var(--info);
  margin-top: 5px;
}

.form-hint svg { width: 13px; height: 13px; flex-shrink: 0; margin-top: 1px; }

.modal-footer {
  padding: 12px 20px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
  flex-shrink: 0;
  background: var(--bg-input);
  border-radius: 0 0 var(--radius-xl) var(--radius-xl);
}

/* ── Keyboard Shortcuts Modal ────────────────────────────────── */
.shortcuts-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.shortcut-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}
.shortcut-key {
  background: var(--bg-input);
  border: 1px solid var(--border-bright);
  padding: 2px 7px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 800;
  color: var(--text-primary);
  font-family: monospace;
}

/* ── Toast Notifications ─────────────────────────────────────── */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 999;
  display: flex;
  flex-direction: column;
  gap: 8px;
  pointer-events: none;
}

.toast {
  background: var(--bg-elevated);
  border: 1px solid var(--border-bright);
  color: var(--text-primary);
  padding: 10px 16px;
  border-radius: var(--radius-md);
  font-size: 12.5px;
  font-weight: 600;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 8px;
  pointer-events: all;
  animation: toastIn 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
  transition: all 0.2s ease;
}

.toast.success { border-left: 3px solid var(--success); }
.toast.info    { border-left: 3px solid var(--accent); }
.toast.error   { border-left: 3px solid var(--danger); }

@keyframes toastIn {
  from { opacity: 0; transform: translateY(16px) scale(0.95); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

/* ── Animations ──────────────────────────────────────────────── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

/* ── Welcome Screen ──────────────────────────────────────────── */
.welcome-screen {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 40px;
  color: var(--text-muted);
  animation: fadeIn 0.3s ease;
}

.welcome-screen svg { width: 56px; height: 56px; margin-bottom: 16px; opacity: 0.25; }
.welcome-screen h2 { font-family: 'Space Grotesk', sans-serif; font-size: 18px; font-weight: 700; color: var(--text-secondary); margin-bottom: 6px; }
.welcome-screen p { font-size: 13px; max-width: 340px; }

/* ── Donut chart center label ────────────────────────────────── */
.donut-center-label {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  pointer-events: none;
}

.donut-center-label span:first-child {
  display: block;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 22px;
  font-weight: 800;
  color: var(--text-primary);
}

.donut-center-label span:last-child {
  display: block;
  font-size: 9.5px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-top: 1px;
}

.chart-donut-wrap {
  position: relative;
  width: 150px;
  height: 150px;
  margin: 0 auto;
}

/* ── Utility ─────────────────────────────────────────────────── */
.hidden { display: none !important; }
.truncate { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.scroll { overflow-y: auto; }