/* ===== Layout System ===== */

/* App shell */
.app-shell {
  display: flex;
  min-height: 100vh;
  position: relative;
  z-index: 1;
}

/* Sidebar */
.sidebar {
  width: var(--sidebar-width);
  height: 100vh;
  position: fixed;
  left: 0;
  top: 0;
  background: var(--bg-surface);
  border-right: 1px solid var(--border-default);
  display: flex;
  flex-direction: column;
  z-index: 50;
  transition: width var(--transition-base);
}

.sidebar-brand {
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: var(--space-3);
  padding: 0 var(--space-5);
  border-bottom: 1px solid var(--border-default);
}

.sidebar-brand-logo {
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  flex-shrink: 1;
  min-width: 0;
}

.sidebar-brand-logo .logo-img {
  height: 100%;
  width: auto;
  max-width: 160px;
  filter: brightness(0) invert(1) drop-shadow(0 0 10px rgba(255,255,255,0.45)) drop-shadow(0 0 24px rgba(91, 141, 239, 0.25));
  object-fit: contain;
}

.sidebar-brand-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-violet));
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: var(--shadow-glow-blue);
}

.sidebar-brand-collapsed {
  display: none;
}

.sidebar-brand-icon svg {
  width: 22px;
  height: 22px;
  color: white;
}

.header-brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-right: var(--space-2);
}

.header-brand-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-violet));
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: var(--shadow-glow-blue);
}

.header-brand-icon svg {
  width: 20px;
  height: 20px;
  color: white;
}

.header-brand-texts {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.header-brand-title {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: -0.2px;
  color: var(--text-primary);
}

.header-brand-subtitle {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 2px;
}

.login-brand-logo {
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.login-brand-logo .logo-img {
  height: 100%;
  width: auto;
  max-width: 220px;
  filter: brightness(0) invert(1) drop-shadow(0 0 16px rgba(255,255,255,0.5)) drop-shadow(0 0 36px rgba(91, 141, 239, 0.35));
  object-fit: contain;
}

.logo-img {
  filter: brightness(0) invert(1) drop-shadow(0 0 8px rgba(255,255,255,0.4));
}

.sidebar-nav {
  flex: 1;
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  overflow-y: auto;
}

.sidebar-nav-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: none;
  background: transparent;
  width: 100%;
  text-align: left;
}

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

.sidebar-nav-item.active {
  background: linear-gradient(135deg, rgba(91, 141, 239, 0.15), rgba(155, 125, 255, 0.1));
  color: var(--accent-cyan);
  border: 1px solid rgba(79, 209, 255, 0.2);
}

.sidebar-nav-item svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.sidebar-footer {
  padding: var(--space-4);
  border-top: 1px solid var(--border-default);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.user-pill {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  background: var(--bg-elevated);
  border-radius: var(--radius-full);
  border: 1px solid var(--border-default);
  color: var(--text-secondary);
  font-size: 12px;
}

.user-pill svg {
  width: 14px;
  height: 14px;
}

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

/* Header */
.app-header {
  height: var(--header-height);
  background: rgba(19, 22, 38, 0.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-default);
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-6);
}

.header-left {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.header-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.2px;
}

.header-subtitle {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 2px;
}

.header-right {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

/* Date selector */
.date-selector {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  background: var(--bg-elevated);
  padding: var(--space-1);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-default);
}

.date-selector button {
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.date-selector button:hover {
  color: var(--text-primary);
  background: var(--bg-hover);
}

.date-selector button.active {
  background: var(--accent-blue);
  color: white;
  box-shadow: 0 2px 8px rgba(91, 141, 239, 0.3);
}

/* Clock badge */
.clock-badge {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  background: var(--bg-elevated);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-full);
  color: var(--text-secondary);
  font-size: 12px;
  font-weight: 500;
  font-variant-numeric: tabular-nums;
}

.clock-badge svg {
  width: 14px;
  height: 14px;
}

/* Content area */
.content-area {
  flex: 1;
  padding: var(--space-6);
  overflow-x: hidden;
}

/* 12-column grid */
.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--panel-gap);
}

.col-1 { grid-column: span 1; }
.col-2 { grid-column: span 2; }
.col-3 { grid-column: span 3; }
.col-4 { grid-column: span 4; }
.col-5 { grid-column: span 5; }
.col-6 { grid-column: span 6; }
.col-7 { grid-column: span 7; }
.col-8 { grid-column: span 8; }
.col-9 { grid-column: span 9; }
.col-10 { grid-column: span 10; }
.col-11 { grid-column: span 11; }
.col-12 { grid-column: span 12; }

@media (max-width: 1400px) {
  .col-3, .col-4, .col-5 { grid-column: span 6; }
  .col-7, .col-8, .col-9 { grid-column: span 12; }
}

@media (max-width: 1024px) {
  .col-1, .col-2, .col-3, .col-4, .col-5, .col-6, .col-7, .col-8, .col-9, .col-10, .col-11 { grid-column: span 12; }
  .main-area { margin-left: var(--sidebar-collapsed); }
  .sidebar { width: var(--sidebar-collapsed); }
  .sidebar-brand-logo,
  .header-brand-texts,
  .sidebar-nav-item span,
  .user-pill span { display: none; }
  .sidebar-brand-collapsed { display: flex; }
  .sidebar-brand { justify-content: center; padding: 0; }
  .sidebar-nav-item { justify-content: center; padding: var(--space-3); }
  .header-title { font-size: 16px; }
  .app-header { padding: 0 var(--space-4); }
}

@media (max-width: 768px) {
  .content-area { padding: var(--space-4); }
  .dashboard-grid { gap: var(--space-4); }
  .date-selector { display: none; }
  .header-right { gap: var(--space-2); }
}

/* Responsive sidebar on mobile */
@media (max-width: 640px) {
  .sidebar {
    transform: translateX(-100%);
    width: var(--sidebar-width);
  }
  .sidebar.open {
    transform: translateX(0);
  }
  .main-area { margin-left: 0; }
  .mobile-menu-btn {
    display: flex !important;
  }
  .mobile-sidebar-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 45;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-fast);
  }
  .mobile-sidebar-overlay.active {
    opacity: 1;
    pointer-events: auto;
  }
  .sidebar-brand-logo,
  .sidebar-nav-item span,
  .user-pill span {
    display: flex;
  }
  .sidebar-brand-collapsed {
    display: none;
  }
  .header-brand-texts {
    display: flex;
  }
  .sidebar-nav-item {
    justify-content: flex-start;
    padding: var(--space-3) var(--space-4);
  }
  .sidebar-brand {
    justify-content: flex-start;
    padding: 0 var(--space-5);
  }
}

@media (min-width: 641px) {
  .mobile-sidebar-overlay {
    display: none;
  }
}