/* ============================================================
   ESCALA DE SOBREAVISO — DESIGN SYSTEM v2.0
   Corporate UI · Responsive · Accessible
   ============================================================ */

/* --- CSS Custom Properties (Design Tokens) --- */
:root {
  /* Brand */
  --color-primary: #1d4ed8;
  --color-primary-hover: #1e40af;
  --color-primary-light: #dbeafe;
  --color-primary-50: #eff6ff;

  /* Surfaces */
  --color-bg: #f1f5f9;
  --color-surface: #ffffff;
  --color-surface-hover: #f8fafc;
  --color-sidebar: #0f172a;
  --color-sidebar-hover: #1e293b;
  --color-sidebar-active: #1d4ed8;

  /* Text */
  --color-text: #0f172a;
  --color-text-secondary: #64748b;
  --color-text-muted: #94a3b8;
  --color-text-inverse: #f8fafc;

  /* Borders */
  --color-border: #e2e8f0;
  --color-border-light: #f1f5f9;

  /* Status — Scale-specific */
  --color-s1: #2563eb;
  --color-s1-light: #dbeafe;
  --color-s1-text: #1e40af;

  --color-s2: #059669;
  --color-s2-light: #d1fae5;
  --color-s2-text: #065f46;

  --color-ferias: #7c3aed;
  --color-ferias-light: #ede9fe;
  --color-ferias-text: #5b21b6;

  --color-bloqueio: #d97706;
  --color-bloqueio-light: #fef3c7;
  --color-bloqueio-text: #92400e;

  --color-feriado: #f59e0b;
  --color-feriado-light: #fef9c3;
  --color-feriado-text: #92400e;

  --color-feriadao: #8b5cf6;
  --color-feriadao-light: #f5f3ff;
  --color-feriadao-text: #6d28d9;

  --color-conflito: #dc2626;
  --color-conflito-light: #fee2e2;

  --color-manual: #0284c7;
  --color-manual-light: #e0f2fe;

  --color-weekend: #f8fafc;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0,0,0,.05);
  --shadow: 0 1px 3px rgba(0,0,0,.1), 0 1px 2px rgba(0,0,0,.06);
  --shadow-md: 0 4px 6px rgba(0,0,0,.07), 0 2px 4px rgba(0,0,0,.06);
  --shadow-lg: 0 10px 15px rgba(0,0,0,.1), 0 4px 6px rgba(0,0,0,.05);

  /* Radius */
  --radius-sm: 6px;
  --radius: 8px;
  --radius-lg: 12px;

  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;

  /* Sidebar */
  --sidebar-width: 260px;
  --topbar-height: 56px;

  /* Typography */
  --font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-size-xs: 0.6875rem;
  --font-size-sm: 0.8125rem;
  --font-size-base: 0.875rem;
  --font-size-lg: 1rem;
  --font-size-xl: 1.125rem;
  --font-size-2xl: 1.25rem;
  --font-size-3xl: 1.5rem;
}

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

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { color: var(--color-primary); text-decoration: none; }
a:hover { color: var(--color-primary-hover); }

h1, h2, h3, h4, h5, h6 { font-weight: 600; color: var(--color-text); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }

/* --- Layout: Sidebar + Main --- */
.app-layout {
  display: flex;
  min-height: 100vh;
}

/* Sidebar */
.app-sidebar {
  width: var(--sidebar-width);
  background: var(--color-sidebar);
  color: var(--color-text-inverse);
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 50;
  display: flex;
  flex-direction: column;
  transition: transform .25s ease;
  overflow-y: auto;
}

.sidebar-brand {
  padding: var(--space-lg) var(--space-lg);
  border-bottom: 1px solid rgba(255,255,255,.08);
  display: flex;
  align-items: center;
  gap: 12px;
}

.sidebar-brand .brand-icon {
  width: 36px;
  height: 36px;
  background: var(--color-primary);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
}

.sidebar-brand .brand-text {
  font-weight: 700;
  font-size: var(--font-size-base);
  line-height: 1.2;
}

.sidebar-brand .brand-sub {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  font-weight: 400;
}

.sidebar-nav {
  flex: 1;
  padding: var(--space-sm);
}

.sidebar-section {
  padding: var(--space-md) var(--space-md) var(--space-xs);
  font-size: var(--font-size-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .05em;
  color: var(--color-text-muted);
}

.sidebar-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
  font-weight: 500;
  transition: all .15s ease;
  margin-bottom: 2px;
  text-decoration: none;
}

.sidebar-link:hover {
  background: var(--color-sidebar-hover);
  color: var(--color-text-inverse);
}

.sidebar-link.active {
  background: var(--color-sidebar-active);
  color: #fff;
}

.sidebar-link i {
  font-size: 1.1rem;
  width: 20px;
  text-align: center;
}

.sidebar-footer {
  padding: var(--space-md) var(--space-lg);
  border-top: 1px solid rgba(255,255,255,.08);
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.sidebar-user {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: var(--space-md);
  margin: var(--space-sm);
  border-radius: var(--radius);
  background: var(--color-sidebar-hover);
}

.sidebar-user .avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: var(--font-size-xs);
}

/* Main Content */
.app-main {
  flex: 1;
  margin-left: var(--sidebar-width);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* Topbar */
.app-topbar {
  height: var(--topbar-height);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  padding: 0 var(--space-lg);
  position: sticky;
  top: 0;
  z-index: 40;
  gap: var(--space-md);
}

.topbar-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.3rem;
  cursor: pointer;
  padding: 4px;
  color: var(--color-text-secondary);
}

.topbar-breadcrumb {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.topbar-breadcrumb span { color: var(--color-text); font-weight: 500; }

.topbar-spacer { flex: 1; }

.topbar-actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

/* Content */
.app-content {
  flex: 1;
  padding: var(--space-lg);
  max-width: 1400px;
  width: 100%;
  margin: 0 auto;
}

/* Footer */
.app-footer {
  padding: var(--space-md) var(--space-lg);
  border-top: 1px solid var(--color-border);
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  text-align: center;
}

/* --- Components --- */

/* Cards */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.card-header {
  padding: var(--space-md) var(--space-lg);
  border-bottom: 1px solid var(--color-border-light);
  font-weight: 600;
  font-size: var(--font-size-base);
  display: flex;
  align-items: center;
  gap: 8px;
  background: transparent;
}

.card-body {
  padding: var(--space-lg);
}

/* Stat Cards */
.stat-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  box-shadow: var(--shadow-sm);
  transition: box-shadow .15s ease;
}

.stat-card:hover { box-shadow: var(--shadow-md); }

.stat-card .stat-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  margin-bottom: var(--space-sm);
}

.stat-card .stat-value {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  line-height: 1;
  margin-bottom: 4px;
}

.stat-card .stat-label {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  font-weight: 500;
}

/* Badges */
.badge { font-weight: 600; font-size: var(--font-size-xs); padding: 3px 8px; border-radius: 4px; }

.badge-s1 { background: var(--color-s1-light); color: var(--color-s1-text); }
.badge-s2 { background: var(--color-s2-light); color: var(--color-s2-text); }
.badge-ferias { background: var(--color-ferias-light); color: var(--color-ferias-text); }
.badge-bloqueio { background: var(--color-bloqueio-light); color: var(--color-bloqueio-text); }
.badge-feriado { background: var(--color-feriado-light); color: var(--color-feriado-text); }
.badge-feriadao { background: var(--color-feriadao-light); color: var(--color-feriadao-text); }
.badge-conflito { background: var(--color-conflito-light); color: var(--color-conflito); }
.badge-manual { background: var(--color-manual-light); color: var(--color-manual); }

/* Buttons */
.btn { font-weight: 500; font-size: var(--font-size-sm); border-radius: var(--radius-sm); padding: 8px 16px; transition: all .15s; }
.btn-primary { background: var(--color-primary); border-color: var(--color-primary); }
.btn-primary:hover { background: var(--color-primary-hover); border-color: var(--color-primary-hover); }
.btn-sm { padding: 4px 10px; font-size: var(--font-size-xs); }
.btn-lg { padding: 10px 20px; font-size: var(--font-size-base); }

/* Tables */
.table-container {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.table {
  margin-bottom: 0;
  font-size: var(--font-size-sm);
}

.table th {
  background: var(--color-bg);
  font-weight: 600;
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: .03em;
  color: var(--color-text-secondary);
  padding: 10px 14px;
  white-space: nowrap;
  border-bottom: 2px solid var(--color-border);
}

.table td {
  padding: 10px 14px;
  vertical-align: middle;
}

.table tr:hover td { background: var(--color-surface-hover); }

/* Alerts */
.alert {
  border: none;
  border-radius: var(--radius);
  font-size: var(--font-size-sm);
  padding: var(--space-md) var(--space-lg);
}

/* Forms */
.form-label {
  font-weight: 600;
  font-size: var(--font-size-sm);
  margin-bottom: 4px;
  color: var(--color-text);
}

.form-control, .form-select {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  font-size: var(--font-size-base);
  transition: border-color .15s, box-shadow .15s;
}

.form-control:focus, .form-select:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-light);
}

/* --- Calendar --- */
.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 1px;
  background: var(--color-border);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.calendar-header-cell {
  background: var(--color-bg);
  padding: 10px 4px;
  text-align: center;
  font-weight: 600;
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  text-transform: uppercase;
}

.calendar-day {
  background: var(--color-surface);
  min-height: 95px;
  padding: 6px 8px;
  font-size: var(--font-size-xs);
  position: relative;
  transition: background .1s;
}

.calendar-day:hover { filter: brightness(.98); }

.calendar-day.other-month { opacity: .3; }
.calendar-day.weekend { background: var(--color-weekend); }
.calendar-day.feriado-cell { background: var(--color-feriado-light); }
.calendar-day.feriadao-cell { background: var(--color-feriadao-light); }
.calendar-day.today { box-shadow: inset 0 0 0 2px var(--color-primary); }

.calendar-day-num {
  font-weight: 700;
  font-size: var(--font-size-sm);
  margin-bottom: 2px;
}

.feriado-cell .calendar-day-num { color: var(--color-feriado-text); }
.feriadao-cell .calendar-day-num { color: var(--color-feriadao-text); }

.calendar-day-assignments {
  display: flex;
  flex-direction: column;
  gap: 1px;
  margin-top: 2px;
}

.calendar-tag {
  display: block;
  padding: 1px 6px;
  border-radius: 3px;
  font-weight: 600;
  font-size: .65rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.calendar-tag.s1 { background: var(--color-s1-light); color: var(--color-s1-text); }
.calendar-tag.s2 { background: var(--color-s2-light); color: var(--color-s2-text); }
.calendar-tag.ferias { background: var(--color-ferias-light); color: var(--color-ferias-text); }
.calendar-tag.bloqueio { background: var(--color-bloqueio-light); color: var(--color-bloqueio-text); }

.calendar-day-indicators {
  position: absolute;
  top: 4px;
  right: 4px;
  display: flex;
  gap: 2px;
}

/* Calendar Mobile (card list) */
.calendar-list { display: none; }

/* --- Mobile Calendar List --- */
@media (max-width: 991px) {
  .calendar-grid { display: none; }
  .calendar-list { display: block; }

  .calendar-list-item {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: var(--space-md);
    margin-bottom: var(--space-sm);
    display: flex;
    align-items: center;
    gap: var(--space-md);
  }

  .calendar-list-item .day-badge {
    width: 44px;
    height: 44px;
    border-radius: var(--radius);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: var(--font-size-lg);
    flex-shrink: 0;
  }

  .calendar-list-item .day-info { flex: 1; min-width: 0; }
}

/* --- Responsive: Sidebar --- */
@media (max-width: 991px) {
  .app-sidebar {
    transform: translateX(-100%);
  }

  .app-sidebar.open {
    transform: translateX(0);
  }

  .app-main {
    margin-left: 0;
  }

  .topbar-toggle { display: block; }

  .app-content {
    padding: var(--space-md);
  }

  .stat-card .stat-value {
    font-size: var(--font-size-2xl);
  }
}

@media (min-width: 992px) {
  .app-sidebar { transform: translateX(0) !important; }
}

/* Sidebar overlay for mobile */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.5);
  z-index: 49;
}

@media (max-width: 991px) {
  .sidebar-overlay.show { display: block; }
}

/* --- Utilities --- */
.text-muted { color: var(--color-text-secondary) !important; }
.fw-semibold { font-weight: 600; }
.gap-2 { gap: var(--space-sm); }
.gap-3 { gap: var(--space-md); }

/* --- Print --- */
@media print {
  .app-sidebar, .app-topbar, .app-footer, .btn, form, .alert { display: none !important; }
  .app-main { margin-left: 0 !important; }
  .app-content { padding: 0; }
  .card { box-shadow: none; border: 1px solid #ddd; }
}

/* Scrollbar */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #cbd5e1; border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: #94a3b8; }

/* Legend */
.legend { display: flex; flex-wrap: wrap; gap: var(--space-sm); font-size: var(--font-size-xs); }
.legend-item { display: flex; align-items: center; gap: 4px; }
.legend-swatch { width: 12px; height: 12px; border-radius: 3px; flex-shrink: 0; }

/* Loading Skeleton */
.skeleton {
  background: linear-gradient(90deg, #e2e8f0 25%, #f1f5f9 50%, #e2e8f0 75%);
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s infinite;
  border-radius: var(--radius-sm);
}

@keyframes skeleton-loading {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* Empty state */
.empty-state {
  text-align: center;
  padding: var(--space-2xl);
  color: var(--color-text-muted);
}

.empty-state i { font-size: 3rem; margin-bottom: var(--space-md); display: block; }
.empty-state h4 { color: var(--color-text-secondary); margin-bottom: var(--space-sm); }

/* Mini calendar — annual view */
.mini-calendar { font-size: .6rem; width: 100%; }
.mini-calendar td { padding: 1px; text-align: center; }
.mini-calendar .mini-day { width: 14.28%; height: 16px; }
.mini-calendar .mini-day.fds { background: var(--color-weekend); }
.mini-calendar .mini-day.feriado { background: var(--color-feriado-light); }
.mini-calendar .mini-day.feriadao { background: var(--color-feriadao-light); }