/* ================================================================
   SGED — Sistema de Gestão de Diários de Educação
   Design System · Dark Glassmorphism
   ================================================================ */

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

/* ── Color Tokens ────────────────────────────────────────────── */
:root {
  /* Background */
  --bg-base:       #0b0d14;
  --bg-card:       #13161f;
  --bg-elevated:   #1c2032;
  --bg-hover:      #222840;
  --bg-glass:      rgba(28, 32, 50, 0.72);

  /* Brand / Accent */
  --accent:        #6366f1;
  --accent-light:  #818cf8;
  --accent-glow:   rgba(99, 102, 241, 0.25);
  --accent-soft:   rgba(99, 102, 241, 0.12);

  /* Semantic */
  --success:       #22c55e;
  --success-soft:  rgba(34, 197, 94, 0.12);
  --danger:        #ef4444;
  --danger-soft:   rgba(239, 68, 68, 0.12);
  --warning:       #f59e0b;
  --warning-soft:  rgba(245, 158, 11, 0.12);
  --info:          #38bdf8;
  --info-soft:     rgba(56, 189, 248, 0.12);

  /* Text */
  --text-primary:  #f1f5f9;
  --text-secondary:#94a3b8;
  --text-muted:    #4b5680;
  --text-accent:   #a5b4fc;

  /* Borders */
  --border:        rgba(255,255,255,0.07);
  --border-bright: rgba(255,255,255,0.14);

  /* Shadows */
  --shadow-sm:  0 1px 3px rgba(0,0,0,0.4);
  --shadow-md:  0 4px 16px rgba(0,0,0,0.5);
  --shadow-lg:  0 10px 40px rgba(0,0,0,0.6);
  --shadow-glow:0 0 24px var(--accent-glow);

  /* Spacing & Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-xl: 24px;

  /* Sidebar */
  --sidebar-w: 260px;
  --panel-w:   320px;

  /* Transitions */
  --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --bounce:     all 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* ── 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: var(--bg-base);
  color: var(--text-primary);
  -webkit-font-smoothing: antialiased;
}

/* ── Scrollbar ───────────────────────────────────────────────── */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.12); border-radius: 99px; }
::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.22); }

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

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

.sidebar-brand {
  padding: 20px 18px 16px;
  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), #8b5cf6);
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 4px 12px 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: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-left: 46px;
}

.sidebar-status {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 12px;
  font-size: 11px;
  font-weight: 600;
  color: var(--success);
  letter-spacing: 0.5px;
}

.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(34,197,94,0.4); }
  50%       { opacity: 0.7; box-shadow: 0 0 0 5px rgba(34,197,94,0); }
}

/* ── Sidebar Nav ─────────────────────────────────────────────── */
.sidebar-nav {
  padding: 12px 10px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 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-light);
  box-shadow: inset 0 0 0 1px rgba(99,102,241,0.2);
}

.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;
}

/* ── Class List ──────────────────────────────────────────────── */
.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: 9px 10px 9px 32px;
  background: var(--bg-card);
  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: rgba(99,102,241,0.5);
  background: var(--bg-elevated);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.sidebar-section-label {
  padding: 14px 18px 6px;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-muted);
  flex-shrink: 0;
}

.class-list {
  flex: 1;
  overflow-y: auto;
  padding: 4px 10px 12px;
}

.class-item {
  display: flex;
  align-items: center;
  padding: 10px 12px;
  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(99,102,241,0.25);
  box-shadow: var(--shadow-glow);
}

.class-item-avatar {
  width: 32px; height: 32px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, #374151, #1f2937);
  display: flex; align-items: center; justify-content: center;
  font-size: 12px; font-weight: 800;
  color: var(--text-secondary);
  flex-shrink: 0;
  text-transform: uppercase;
}

.class-item.active .class-item-avatar {
  background: linear-gradient(135deg, var(--accent), #8b5cf6);
  color: #fff;
}

.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;
}

/* ── Topbar ──────────────────────────────────────────────────── */
.topbar {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 0 24px;
  height: 58px;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  z-index: 10;
}

.topbar-title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 340px;
}

.topbar-subtitle {
  font-size: 11px;
  font-weight: 600;
  color: var(--accent-light);
  background: var(--accent-soft);
  border: 1px solid rgba(99,102,241,0.2);
  padding: 2px 8px;
  border-radius: 5px;
  white-space: nowrap;
}

.topbar-search-wrap {
  flex: 1;
  max-width: 420px;
  margin-left: auto;
  position: relative;
}

.topbar-search-wrap svg {
  position: absolute;
  left: 12px; top: 50%;
  transform: translateY(-50%);
  width: 15px; height: 15px;
  color: var(--text-muted);
  pointer-events: none;
}

.topbar-search {
  width: 100%;
  padding: 8px 12px 8px 36px;
  background: var(--bg-elevated);
  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: rgba(99,102,241,0.5);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

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

.save-badge {
  font-size: 12px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  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); }

/* ── Month Tabs ──────────────────────────────────────────────── */
.month-tabs {
  display: flex;
  gap: 6px;
  padding: 10px 24px;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  overflow-x: auto;
  flex-shrink: 0;
}

.month-tab {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 99px;
  font-size: 12.5px;
  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(255,255,255,0.15);
  padding: 1px 6px;
  border-radius: 99px;
}

.month-tab.active .month-count { background: rgba(255,255,255,0.25); }

/* ── Board / Scroll Area ─────────────────────────────────────── */
.board {
  flex: 1;
  overflow-y: auto;
  padding: 24px;
}

/* ── Lesson Cards ────────────────────────────────────────────── */
.lesson-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  display: flex;
  overflow: hidden;
  margin-bottom: 14px;
  transition: var(--transition);
  position: relative;
  animation: fadeUp 0.25s ease both;
}

.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: 16px 18px;
  min-width: 86px;
  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: rgba(255,255,255,0.03); }

.lesson-date-month {
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 2px;
  text-transform: uppercase;
  opacity: 0.6;
  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: 30px;
  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: 16px 18px;
  min-width: 0;
  position: relative;
}

.lesson-tags {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 10px;
  flex-wrap: wrap;
}

.tag {
  font-size: 10.5px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 5px;
  letter-spacing: 0.3px;
}

.tag-content  { background: rgba(255,255,255,0.08); color: var(--text-secondary); }
.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: 1.65;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

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

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

.lesson-actions {
  display: flex;
  gap: 6px;
  margin-top: 14px;
  justify-content: flex-end;
}

.pending-alert {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  font-weight: 700;
  color: var(--danger);
  background: var(--danger-soft);
  border: 1px solid rgba(239,68,68,0.2);
  padding: 3px 10px;
  border-radius: 5px;
  margin-right: auto;
  animation: blink-alert 2.5s infinite;
}

@keyframes blink-alert {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.6; }
}

/* ── Buttons ─────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  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 16px var(--accent-glow); }

.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-light);
  border-color: rgba(99,102,241,0.25);
}
.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-add {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  padding: 13px;
  background: transparent;
  border: 2px dashed rgba(255,255,255,0.1);
  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-light);
  background: var(--accent-soft);
}

/* ── Empty State ─────────────────────────────────────────────── */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 20px;
  text-align: center;
  color: var(--text-muted);
}

.empty-state svg { width: 52px; height: 52px; margin-bottom: 16px; opacity: 0.4; }
.empty-state h3 { font-size: 16px; font-weight: 700; color: var(--text-secondary); margin-bottom: 6px; }
.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: 18px 20px;
  position: relative;
  overflow: hidden;
  transition: var(--transition);
}

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

.kpi-card-icon {
  width: 40px; height: 40px;
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 14px;
}

.kpi-card-icon svg { width: 20px; height: 20px; }

.kpi-card-icon.indigo  { background: var(--accent-soft); color: var(--accent-light); }
.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: 28px;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1;
  margin-bottom: 4px;
}

.kpi-label {
  font-size: 11.5px;
  font-weight: 600;
  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: 6px;
}

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

.kpi-card.indigo::after { background: linear-gradient(90deg, var(--accent), #8b5cf6); }
.kpi-card.green::after  { background: linear-gradient(90deg, var(--success), #16a34a); }
.kpi-card.red::after    { background: linear-gradient(90deg, var(--danger), #b91c1c); }
.kpi-card.sky::after    { background: linear-gradient(90deg, var(--info), #0284c7); }

/* ── 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: 20px;
}

.chart-card-title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 14px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

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

.chart-legend {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 16px;
}

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

.legend-dot {
  width: 10px; height: 10px;
  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: 20px;
}

.progress-item {
  margin-bottom: 12px;
}

.progress-item:last-child { margin-bottom: 0; }

.progress-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 5px;
}

.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: rgba(255,255,255,0.06);
  border-radius: 99px;
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  border-radius: 99px;
  background: linear-gradient(90deg, var(--accent), var(--success));
  transition: width 0.6s 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: 5px;
}

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

.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-light); }

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

.cal-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.cal-month-label {
  font-size: 12.5px;
  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: 5px;
  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: 4px;
}

.cal-wd {
  text-align: center;
  font-size: 10px;
  font-weight: 700;
  color: var(--text-muted);
  padding: 3px 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: 11.5px;
  font-weight: 600;
  border-radius: 7px;
  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-light);
  font-weight: 800;
  box-shadow: 0 0 0 1px rgba(99,102,241,0.3);
}

.cal-day.has-lesson { color: var(--text-secondary); }

.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;
  animation: pulse-pending 3s infinite;
}

@keyframes pulse-pending {
  0%, 100% { box-shadow: 0 0 0 0 rgba(239,68,68,0); }
  50%       { box-shadow: 0 0 0 4px rgba(239,68,68,0.15); }
}

/* ── Pending List ────────────────────────────────────────────── */
.pending-list-header {
  padding: 10px 14px 8px;
  font-size: 10.5px;
  font-weight: 800;
  letter-spacing: 1.5px;
  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 7px;
  border-radius: 99px;
}

.pending-list {
  flex: 1;
  overflow-y: auto;
  padding: 4px 10px 16px;
}

.pending-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-left: 3px solid var(--danger);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  margin-bottom: 6px;
  transition: var(--transition);
  cursor: pointer;
}

.pending-item:hover { background: var(--bg-hover); border-color: rgba(239,68,68,0.4); transform: translateX(2px); }

.pending-item-date {
  font-size: 11px;
  font-weight: 800;
  color: var(--danger);
  display: flex;
  align-items: center;
  gap: 4px;
  margin-bottom: 4px;
}

.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: 10.5px;
  font-weight: 500;
  color: var(--text-muted);
  margin-top: 3px;
}

.missing-tag {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  font-size: 10px;
  font-weight: 700;
  padding: 1px 6px;
  background: var(--danger-soft);
  color: var(--danger);
  border-radius: 4px;
  margin-right: 4px;
  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: 14px 16px;
  margin-bottom: 10px;
  cursor: pointer;
  transition: var(--transition);
  animation: fadeUp 0.2s ease both;
}

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

.search-result-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
  flex-wrap: wrap;
}

.search-result-class {
  font-size: 11px;
  font-weight: 700;
  color: var(--accent-light);
  background: var(--accent-soft);
  padding: 2px 7px;
  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: 1.55;
}

.search-result-text mark {
  background: rgba(245, 158, 11, 0.3);
  color: var(--warning);
  border-radius: 2px;
  padding: 0 2px;
}

.search-empty {
  text-align: center;
  padding: 50px 20px;
  color: var(--text-muted);
}

.search-empty svg { width: 40px; height: 40px; margin: 0 auto 12px; display: block; opacity: 0.3; }
.search-empty p   { font-size: 13px; font-weight: 600; }

/* ── Plans View ──────────────────────────────────────────────── */
.plans-view { padding: 24px; }

.plan-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  margin-bottom: 12px;
  overflow: hidden;
  transition: var(--transition);
}

.plan-card-header {
  padding: 16px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  transition: var(--transition);
}

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

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

.plan-period-badge {
  background: linear-gradient(135deg, var(--accent), #8b5cf6);
  color: #fff;
  font-size: 10px;
  font-weight: 800;
  padding: 3px 9px;
  border-radius: 5px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.plan-disc-name {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-primary);
}

.plan-chevron {
  width: 18px; height: 18px;
  color: var(--text-muted);
  transition: transform 0.25s ease;
}

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

.plan-body {
  display: none;
  padding: 0 20px 20px;
  border-top: 1px solid var(--border);
}

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

.plan-section {
  margin-top: 16px;
}

.plan-section-title {
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--accent-light);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 6px;
}

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

.plan-section-text {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.65;
  white-space: pre-wrap;
}

/* ── Modal ───────────────────────────────────────────────────── */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.75);
  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-bright);
  border-radius: var(--radius-xl);
  width: 100%;
  max-width: 620px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-lg);
  transform: scale(0.96) translateY(10px);
  transition: transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

.modal-header {
  padding: 18px 22px;
  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: 16px;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.modal-title svg { width: 18px; height: 18px; color: var(--accent-light); }

.modal-close {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 6px;
  border-radius: var(--radius-sm);
  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: 20px 22px;
  overflow-y: auto;
  flex: 1;
}

.form-row {
  display: flex;
  gap: 12px;
  margin-bottom: 16px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  flex: 1;
}

.form-label {
  font-size: 11.5px;
  font-weight: 700;
  color: var(--text-secondary);
  letter-spacing: 0.3px;
}

.form-input, .form-textarea {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  padding: 9px 12px;
  font-family: 'Inter', sans-serif;
  font-size: 13.5px;
  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: rgba(99,102,241,0.5);
  background: var(--bg-elevated);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.form-textarea { resize: none; line-height: 1.6; }

.form-hint {
  display: flex;
  align-items: flex-start;
  gap: 6px;
  padding: 8px 10px;
  background: var(--info-soft);
  border: 1px solid rgba(56,189,248,0.15);
  border-radius: var(--radius-sm);
  font-size: 11px;
  font-weight: 600;
  color: var(--info);
  margin-top: 6px;
}

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

.modal-footer {
  padding: 14px 22px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
  flex-shrink: 0;
  background: var(--bg-card);
  border-radius: 0 0 var(--radius-xl) var(--radius-xl);
}

/* ── Animations ──────────────────────────────────────────────── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(12px); }
  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 0.4s ease;
}

.welcome-screen svg { width: 64px; height: 64px; margin-bottom: 20px; opacity: 0.25; }
.welcome-screen h2 { font-family: 'Space Grotesk', sans-serif; font-size: 20px; font-weight: 700; color: var(--text-secondary); margin-bottom: 8px; }
.welcome-screen p { font-size: 13.5px; max-width: 360px; }

/* ── 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: 10px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-top: 2px;
}

.chart-donut-wrap {
  position: relative;
  width: 160px;
  height: 160px;
  margin: 0 auto;
}

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