/* ==========================================================================
   Lyceum of Subic Bay (LSB) - Alumni Information Management System
   Design System & Unified Stylesheet
   ========================================================================== */

:root {
  --color-primary: #3b1e3e;
  --color-primary-dark: #2a142c;
  --color-primary-light: #4f2953;
  --color-accent: #ff6b00;
  --color-accent-hover: #e05e00;
  --color-accent-subtle: #fff4ec;
  
  --color-bg-page: #f8f9fa;
  --color-bg-surface: #ffffff;
  --color-bg-card-subtle: #faf8f9;
  
  --color-border: #e5e7eb;
  --color-border-subtle: #f1f2f4;
  --color-border-focus: #3b1e3e;
  
  --color-text-main: #1f2937;
  --color-text-muted: #6b7280;
  --color-text-light: #9ca3af;
  --color-text-inverse: #ffffff;
  
  --color-success: #10b981;
  --color-success-bg: #ecfdf5;
  --color-warning: #f59e0b;
  --color-warning-bg: #fffbeb;
  --color-danger: #ef4444;
  --color-danger-bg: #fef2f2;
  --color-info: #3b82f6;
  --color-info-bg: #eff6ff;

  --font-family-base: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.04);
  
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;
  
  --transition-fast: 0.15s ease-in-out;
  --transition-normal: 0.25s ease-in-out;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family-base);
  background-color: var(--color-bg-page);
  color: var(--color-text-main);
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

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

a:hover {
  color: var(--color-accent);
}

/* Layout Container */
.container {
  width: 100%;
  max-width: 1280px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

.main-content {
  flex: 1;
  padding-top: 2rem;
  padding-bottom: 3.5rem;
}

/* Top Branding Bar */
.brand-topbar {
  background-color: var(--color-primary);
  color: var(--color-text-inverse);
  padding: 0.75rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.brand-topbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-identity {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.brand-crest {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background-color: rgba(255, 255, 255, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: var(--color-text-inverse);
  font-size: 1.25rem;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.brand-text h1 {
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: #ffffff;
  line-height: 1.2;
}

.brand-text span {
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.7);
  display: block;
}

.brand-meta {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  font-size: 0.85rem;
}

.user-badge {
  text-align: right;
}

.user-badge .user-name {
  font-weight: 600;
  color: #ffffff;
}

.user-badge .user-role {
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.7);
}

/* Navigation Bar */
.main-nav {
  background-color: var(--color-bg-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 40;
  box-shadow: var(--shadow-sm);
}

.main-nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  list-style: none;
}

.nav-item a {
  display: inline-block;
  padding: 0.5rem 1rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text-muted);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  border-bottom: 2px solid transparent;
}

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

.nav-item.active a {
  color: var(--color-primary);
  border-bottom: 2px solid var(--color-accent);
  background-color: var(--color-bg-page);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.mobile-toggle {
  display: none;
  background: none;
  border: 1px solid var(--color-border);
  padding: 0.4rem 0.6rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  color: var(--color-text-main);
}

/* Typography Hierarchy */
.page-header {
  margin-bottom: 2rem;
}

.page-title {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--color-primary);
  letter-spacing: -0.02em;
  margin-bottom: 0.35rem;
}

.page-subtitle {
  font-size: 0.95rem;
  color: var(--color-text-muted);
}

/* Metric Stats Grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
  margin-bottom: 2rem;
}

.stat-card {
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.stat-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.stat-value {
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1.1;
  margin-bottom: 0.25rem;
}

.stat-label {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--color-text-main);
  margin-bottom: 0.25rem;
}

.stat-subtext {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

/* Modern Card Surfaces */
.card {
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  margin-bottom: 1.5rem;
}

.card-header {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-primary);
}

.card-body {
  padding: 1.5rem;
}

.card-footer {
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--color-border);
  background-color: var(--color-bg-page);
}

/* Highlight Task Banner (Tracer Survey Callout) */
.task-callout {
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-left: 5px solid var(--color-accent);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  margin-bottom: 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: var(--shadow-sm);
}

.task-info h3 {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: 0.35rem;
}

.task-info p {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  margin-bottom: 0.5rem;
}

.task-meta {
  display: flex;
  gap: 1rem;
  font-size: 0.85rem;
  color: var(--color-text-light);
}

/* Grid Layouts */
.grid-2 {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 1.5rem;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.grid-equal-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.65rem 1.25rem;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
}

.btn-primary {
  background-color: var(--color-accent);
  color: var(--color-text-inverse);
}

.btn-primary:hover {
  background-color: var(--color-accent-hover);
  color: var(--color-text-inverse);
}

.btn-secondary {
  background-color: var(--color-primary);
  color: var(--color-text-inverse);
}

.btn-secondary:hover {
  background-color: var(--color-primary-dark);
  color: var(--color-text-inverse);
}

.btn-outline {
  background-color: transparent;
  border-color: var(--color-border);
  color: var(--color-text-main);
}

.btn-outline:hover {
  background-color: var(--color-bg-page);
  border-color: var(--color-text-muted);
}

.btn-outline-primary {
  background-color: transparent;
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn-outline-primary:hover {
  background-color: var(--color-primary);
  color: var(--color-text-inverse);
}

.btn-sm {
  padding: 0.4rem 0.75rem;
  font-size: 0.8rem;
}

/* Status Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.badge-verified, .badge-success {
  background-color: var(--color-success-bg);
  color: var(--color-success);
  border: 1px solid rgba(16, 185, 129, 0.2);
}

.badge-pending, .badge-warning {
  background-color: var(--color-warning-bg);
  color: var(--color-warning);
  border: 1px solid rgba(245, 158, 11, 0.2);
}

.badge-info {
  background-color: var(--color-info-bg);
  color: var(--color-info);
  border: 1px solid rgba(59, 130, 246, 0.2);
}

/* Forms & Inputs */
.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text-main);
  margin-bottom: 0.4rem;
}

.form-control {
  width: 100%;
  padding: 0.65rem 0.85rem;
  font-size: 0.9rem;
  font-family: inherit;
  color: var(--color-text-main);
  background-color: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-control:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(59, 30, 62, 0.1);
}

.form-hint {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-top: 0.35rem;
}

/* Tab Navigation */
.tabs {
  display: flex;
  gap: 0.5rem;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 1.5rem;
}

.tab-btn {
  padding: 0.75rem 1.25rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text-muted);
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.tab-btn:hover {
  color: var(--color-primary);
}

.tab-btn.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-accent);
}

.tab-pane {
  display: none;
}

.tab-pane.active {
  display: block;
}

/* Data Tables */
.table-responsive {
  width: 100%;
  overflow-x: auto;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

.data-table th {
  background-color: var(--color-bg-page);
  padding: 0.75rem 1rem;
  text-align: left;
  font-weight: 700;
  color: var(--color-text-muted);
  border-bottom: 1px solid var(--color-border);
}

.data-table td {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--color-border-subtle);
  color: var(--color-text-main);
  vertical-align: middle;
}

.data-table tr:hover td {
  background-color: #faf8f9;
}

/* Timeline & Feed */
.timeline {
  list-style: none;
}

.timeline-item {
  position: relative;
  padding-left: 1.5rem;
  padding-bottom: 1.25rem;
  border-left: 2px solid var(--color-border);
}

.timeline-item:last-child {
  border-left-color: transparent;
  padding-bottom: 0;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -5px;
  top: 4px;
  width: 8px;
  height: 8px;
  border-radius: var(--radius-full);
  background-color: var(--color-accent);
}

.timeline-title {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text-main);
}

.timeline-time {
  font-size: 0.8rem;
  color: var(--color-text-light);
}

/* Slide-over Drawer / Modal */
.drawer-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.4);
  z-index: 100;
  display: none;
}

.drawer {
  position: fixed;
  top: 0;
  right: -500px;
  width: 100%;
  max-width: 480px;
  height: 100vh;
  background: #ffffff;
  box-shadow: -4px 0 24px rgba(0, 0, 0, 0.15);
  z-index: 101;
  transition: right 0.3s ease;
  display: flex;
  flex-direction: column;
}

.drawer.open {
  right: 0;
}

.drawer-header {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.drawer-body {
  padding: 1.5rem;
  overflow-y: auto;
  flex: 1;
}

.drawer-footer {
  padding: 1.25rem 1.5rem;
  border-top: 1px solid var(--color-border);
  display: flex;
  gap: 0.75rem;
}

/* Likert Scales (Tracer Survey) */
.likert-scale {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0.5rem;
  margin-top: 0.5rem;
}

.likert-option {
  text-align: center;
}

.likert-option input[type="radio"] {
  display: none;
}

.likert-option label {
  display: block;
  padding: 0.65rem 0.25rem;
  background: var(--color-bg-page);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-weight: 700;
  color: var(--color-text-main);
  transition: all var(--transition-fast);
}

.likert-option input[type="radio"]:checked + label {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #ffffff;
}

/* Footer */
.site-footer {
  background-color: #ffffff;
  border-top: 1px solid var(--color-border);
  padding: 1.5rem 0;
  margin-top: auto;
}

.footer-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

/* Responsive Media Queries */
@media (max-width: 992px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .grid-2 {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .stats-grid {
    grid-template-columns: 1fr;
  }
  .task-callout {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }
  .mobile-toggle {
    display: block;
  }
  .nav-links {
    display: none;
    position: absolute;
    top: 56px;
    left: 0;
    right: 0;
    background: #ffffff;
    flex-direction: column;
    padding: 1rem;
    box-shadow: var(--shadow-md);
    border-bottom: 1px solid var(--color-border);
  }
  .nav-links.open {
    display: flex;
  }
  .brand-meta {
    display: none;
  }
  .footer-content {
    flex-direction: column;
    gap: 0.5rem;
    text-align: center;
  }
}