/* ================================================================
   WindsorAdmin 2.0 — Main Design System
   Premium dark-navy + green accent palette
   ================================================================ */

/* ---- Google Fonts ---- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* ---- CSS Custom Properties ---- */
:root {
  /* Brand Colors */
  --color-navy:        #0a1628;
  --color-navy-light:  #0f2044;
  --color-navy-mid:    #1a3060;
  --color-blue:        #1e4080;
  --color-accent:      #22c55e;
  --color-accent-dark: #16a34a;
  --color-accent-glow: rgba(34, 197, 94, 0.15);

  /* Neutrals */
  --color-bg:          #f0f4f8;
  --color-bg-card:     #ffffff;
  --color-bg-sidebar:  #0a1628;
  --color-border:      #dde3ed;
  --color-border-light:#e8edf5;

  /* Text */
  --color-text-primary:   #1a2332;
  --color-text-secondary: #5a6478;
  --color-text-muted:     #8895a7;
  --color-text-white:     #ffffff;
  --color-text-on-navy:   #c8d8f0;

  /* Status */
  --color-success:  #22c55e;
  --color-warning:  #f59e0b;
  --color-danger:   #ef4444;
  --color-info:     #3b82f6;

  /* Shadows */
  --shadow-sm:   0 1px 3px rgba(0,0,0,0.08);
  --shadow-md:   0 4px 16px rgba(0,0,0,0.10);
  --shadow-lg:   0 8px 32px rgba(0,0,0,0.14);
  --shadow-nav:  0 2px 12px rgba(10,22,40,0.5);

  /* Typography */
  --font-family:  'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-size-xs: 0.72rem;
  --font-size-sm: 0.82rem;
  --font-size-md: 0.9rem;
  --font-size-base: 0.95rem;
  --font-size-lg:  1.05rem;
  --font-size-xl:  1.2rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;

  /* Layout */
  --sidebar-width: 240px;
  --header-height: 60px;
  --transition: 0.2s ease;
}

/* ================================================================
   RESET & BASE
   ================================================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

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

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  color: var(--color-text-primary);
  background: var(--color-bg);
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--color-info); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--color-accent); }

img { max-width: 100%; height: auto; display: block; }

input, select, textarea, button { font-family: inherit; font-size: inherit; }

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

/* ---- Sidebar ---- */
.sidebar {
  width: var(--sidebar-width);
  background: var(--color-navy);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0; left: 0; bottom: 0;
  z-index: 100;
  overflow-y: auto;
  transition: transform var(--transition);
}

.sidebar-brand {
  padding: var(--space-6) var(--space-5);
  border-bottom: 1px solid rgba(255,255,255,0.08);
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.sidebar-brand-icon {
  width: 36px; height: 36px;
  background: var(--color-accent);
  border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem; font-weight: 800; color: var(--color-navy);
  flex-shrink: 0;
}

.sidebar-brand-text {
  display: flex; flex-direction: column;
  line-height: 1.2;
}

.sidebar-brand-title {
  font-size: var(--font-size-md);
  font-weight: 700;
  color: var(--color-text-white);
  letter-spacing: 0.3px;
}

.sidebar-brand-sub {
  font-size: var(--font-size-xs);
  color: var(--color-text-on-navy);
  opacity: 0.7;
}

.sidebar-nav {
  flex: 1;
  padding: var(--space-4) 0;
  overflow-y: auto;
}

.sidebar-section-title {
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: rgba(255,255,255,0.3);
  padding: var(--space-4) var(--space-5) var(--space-2);
}

.sidebar-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-5);
  margin: 1px var(--space-3);
  border-radius: var(--radius-md);
  color: var(--color-text-on-navy);
  font-size: var(--font-size-sm);
  font-weight: 500;
  transition: all var(--transition);
  position: relative;
  cursor: pointer;
  text-decoration: none;
}

.sidebar-item:hover {
  background: rgba(255,255,255,0.06);
  color: #fff;
  transform: translateX(2px);
}

.sidebar-item.active {
  background: var(--color-accent-glow);
  color: var(--color-accent);
  font-weight: 600;
}

.sidebar-item.active::before {
  content: '';
  position: absolute;
  left: -12px; top: 50%; transform: translateY(-50%);
  width: 3px; height: 60%;
  background: var(--color-accent);
  border-radius: 0 2px 2px 0;
}

.sidebar-item i {
  width: 18px; text-align: center;
  font-size: 0.95rem; flex-shrink: 0;
}

.sidebar-badge {
  margin-left: auto;
  background: var(--color-accent);
  color: var(--color-navy);
  font-size: 0.65rem;
  font-weight: 700;
  padding: 2px 7px;
  border-radius: var(--radius-full);
}

/* Sidebar footer */
.sidebar-footer {
  padding: var(--space-4) var(--space-5);
  border-top: 1px solid rgba(255,255,255,0.08);
}

.sidebar-user {
  display: flex; align-items: center; gap: var(--space-3);
  margin-bottom: var(--space-3);
}

.sidebar-user-avatar {
  width: 32px; height: 32px;
  background: var(--color-navy-mid);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text-white);
  flex-shrink: 0;
}

.sidebar-user-info { flex: 1; min-width: 0; }
.sidebar-user-name {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text-white);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.sidebar-user-role {
  font-size: var(--font-size-xs);
  color: var(--color-text-on-navy);
  opacity: 0.6;
}

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

/* ---- Top Header Bar ---- */
.topbar {
  height: var(--header-height);
  background: var(--color-bg-card);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  padding: 0 var(--space-6);
  gap: var(--space-4);
  position: sticky;
  top: 0;
  z-index: 50;
  box-shadow: var(--shadow-sm);
}

.topbar-breadcrumb {
  display: flex; align-items: center; gap: var(--space-2);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  flex: 1;
}
.topbar-breadcrumb a { color: var(--color-text-secondary); }
.topbar-breadcrumb a:hover { color: var(--color-accent); }
.topbar-breadcrumb .sep { opacity: 0.4; }
.topbar-breadcrumb .current { color: var(--color-text-primary); font-weight: 500; }

.topbar-actions {
  display: flex; align-items: center; gap: var(--space-3);
}

.topbar-search {
  display: flex; align-items: center;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  padding: var(--space-2) var(--space-4);
  gap: var(--space-2);
  width: 220px;
  transition: all var(--transition);
}
.topbar-search:focus-within {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-glow);
  width: 280px;
}
.topbar-search input {
  border: none; background: transparent;
  outline: none; font-size: var(--font-size-sm);
  color: var(--color-text-primary);
  width: 100%;
}
.topbar-search i { color: var(--color-text-muted); font-size: 0.9rem; }

/* Page content wrapper */
.page-content {
  flex: 1;
  padding: var(--space-6) var(--space-8);
}

/* ================================================================
   PAGE HEADER
   ================================================================ */
.page-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: var(--space-6);
  flex-wrap: wrap;
  gap: var(--space-4);
}

.page-title-group { flex: 1; }
.page-title {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--color-text-primary);
  line-height: 1.2;
  margin-bottom: var(--space-1);
}
.page-subtitle {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}
.page-actions { display: flex; gap: var(--space-3); align-items: center; flex-wrap: wrap; }

/* ================================================================
   CARDS
   ================================================================ */
.card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.card-header {
  padding: var(--space-4) var(--space-6);
  border-bottom: 1px solid var(--color-border-light);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.card-title {
  font-size: var(--font-size-md);
  font-weight: 600;
  color: var(--color-text-primary);
}

.card-body { padding: var(--space-6); }

.card-footer {
  padding: var(--space-4) var(--space-6);
  border-top: 1px solid var(--color-border-light);
  background: var(--color-bg);
}

/* ---- Stat Cards ---- */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.stat-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  transition: all var(--transition);
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
}

.stat-card.green::before  { background: var(--color-success); }
.stat-card.blue::before   { background: var(--color-info); }
.stat-card.amber::before  { background: var(--color-warning); }
.stat-card.red::before    { background: var(--color-danger); }
.stat-card.navy::before   { background: var(--color-navy-mid); }

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

.stat-icon {
  width: 48px; height: 48px;
  border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.3rem;
  flex-shrink: 0;
}
.stat-icon.green  { background: rgba(34,197,94,0.12);  color: var(--color-success); }
.stat-icon.blue   { background: rgba(59,130,246,0.12); color: var(--color-info); }
.stat-icon.amber  { background: rgba(245,158,11,0.12); color: var(--color-warning); }
.stat-icon.red    { background: rgba(239,68,68,0.12);  color: var(--color-danger); }
.stat-icon.navy   { background: rgba(30,64,128,0.12);  color: var(--color-navy-mid); }

.stat-info { flex: 1; min-width: 0; }
.stat-label {
  font-size: var(--font-size-xs);
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-1);
}
.stat-value {
  font-size: var(--font-size-2xl);
  font-weight: 800;
  color: var(--color-text-primary);
  line-height: 1.1;
}
.stat-change {
  font-size: var(--font-size-xs);
  margin-top: var(--space-1);
  color: var(--color-text-muted);
}
.stat-change.up   { color: var(--color-success); }
.stat-change.down { color: var(--color-danger); }

/* ================================================================
   TABLE
   ================================================================ */
.table-container {
  width: 100%;
  overflow-x: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-sm);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--color-bg-card);
}

.data-table thead {
  background: var(--color-navy);
  position: sticky;
  top: 0;
  z-index: 1;
}

.data-table thead th {
  padding: var(--space-3) var(--space-4);
  font-size: var(--font-size-xs);
  font-weight: 600;
  letter-spacing: 0.6px;
  text-transform: uppercase;
  color: rgba(255,255,255,0.75);
  text-align: left;
  white-space: nowrap;
  border-bottom: none;
}

.data-table thead th a {
  color: inherit;
  display: flex; align-items: center; gap: var(--space-1);
}
.data-table thead th a:hover { color: var(--color-accent); }

.data-table tbody tr {
  border-bottom: 1px solid var(--color-border-light);
  transition: background var(--transition);
}

.data-table tbody tr:last-child { border-bottom: none; }

.data-table tbody tr:hover {
  background: rgba(34,197,94,0.03);
}

.data-table td {
  padding: var(--space-3) var(--space-4);
  font-size: var(--font-size-sm);
  color: var(--color-text-primary);
  vertical-align: middle;
}

.data-table td.text-right { text-align: right; }
.data-table td.text-center { text-align: center; }

/* ================================================================
   FORMS
   ================================================================ */
.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-4) var(--space-6);
}

.form-grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.form-full { grid-column: 1 / -1; }

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-label {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text-primary);
}
.form-label .required { color: var(--color-danger); margin-left: 2px; }

.form-control {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  background: #fff;
  color: var(--color-text-primary);
  font-size: var(--font-size-sm);
  transition: all var(--transition);
  outline: none;
}

.form-control:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-glow);
}

.form-control:disabled, .form-control:read-only {
  background: var(--color-bg);
  color: var(--color-text-muted);
  cursor: not-allowed;
}

.form-control.is-invalid {
  border-color: var(--color-danger);
  box-shadow: 0 0 0 3px rgba(239,68,68,0.12);
}

textarea.form-control { resize: vertical; min-height: 100px; }

select.form-control { appearance: none; cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24'%3E%3Cpath fill='%235a6478' d='M7 10l5 5 5-5z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
}

.form-hint {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.form-error {
  font-size: var(--font-size-xs);
  color: var(--color-danger);
  display: flex; align-items: center; gap: 4px;
}

/* ---- Form Section Header ---- */
.form-section-header {
  padding: var(--space-4) var(--space-6);
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border-light);
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--color-navy);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  letter-spacing: 0.3px;
  text-transform: uppercase;
}

.form-section-body {
  padding: var(--space-6);
}

/* ================================================================
   BUTTONS
   ================================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-5);
  border-radius: var(--radius-md);
  border: 2px solid transparent;
  font-size: var(--font-size-sm);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  white-space: nowrap;
  outline: none;
  line-height: 1.5;
}

.btn:disabled { opacity: 0.55; cursor: not-allowed; }

.btn-primary {
  background: var(--color-navy);
  color: #fff;
  border-color: var(--color-navy);
}
.btn-primary:hover:not(:disabled) {
  background: var(--color-navy-mid);
  border-color: var(--color-navy-mid);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(10,22,40,0.3);
}

.btn-success {
  background: var(--color-accent);
  color: var(--color-navy);
  border-color: var(--color-accent);
}
.btn-success:hover:not(:disabled) {
  background: var(--color-accent-dark);
  border-color: var(--color-accent-dark);
  color: #fff;
  transform: translateY(-1px);
}

.btn-danger {
  background: var(--color-danger);
  color: #fff;
  border-color: var(--color-danger);
}
.btn-danger:hover:not(:disabled) {
  background: #dc2626;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(239,68,68,0.3);
}

.btn-outline {
  background: transparent;
  color: var(--color-text-primary);
  border-color: var(--color-border);
}
.btn-outline:hover:not(:disabled) {
  background: var(--color-bg);
  border-color: var(--color-text-secondary);
}

.btn-sm {
  padding: 5px var(--space-3);
  font-size: var(--font-size-xs);
}

.btn-lg {
  padding: var(--space-3) var(--space-8);
  font-size: var(--font-size-md);
}

.btn-icon {
  width: 34px; height: 34px;
  padding: 0;
  border-radius: var(--radius-md);
  display: inline-flex;
  align-items: center; justify-content: center;
}

/* Action button group in table rows */
.action-btns {
  display: flex; gap: var(--space-2); align-items: center;
}

/* ================================================================
   BADGES
   ================================================================ */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 3px var(--space-3);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: 600;
  letter-spacing: 0.3px;
  white-space: nowrap;
}

.badge-success { background: rgba(34,197,94,0.12);  color: #16a34a; }
.badge-danger  { background: rgba(239,68,68,0.12);  color: #dc2626; }
.badge-warning { background: rgba(245,158,11,0.12); color: #d97706; }
.badge-info    { background: rgba(59,130,246,0.12); color: #2563eb; }
.badge-secondary { background: rgba(90,100,120,0.1); color: #5a6478; }
.badge-navy    { background: rgba(30,64,128,0.12);  color: var(--color-blue); }

/* ================================================================
   TABS
   ================================================================ */
.tab-nav {
  display: flex;
  gap: 0;
  border-bottom: 2px solid var(--color-border-light);
  margin-bottom: var(--space-6);
  overflow-x: auto;
}

.tab-btn {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  border: none;
  background: transparent;
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  font-weight: 500;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  transition: all var(--transition);
  white-space: nowrap;
  text-decoration: none;
}

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

.tab-btn.active {
  color: var(--color-navy);
  font-weight: 700;
  border-bottom-color: var(--color-accent);
}

.tab-content { display: none; }
.tab-content.active { display: block; }

/* ================================================================
   ALERTS
   ================================================================ */
.alert {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-md);
  border: 1px solid;
  margin-bottom: var(--space-4);
  font-size: var(--font-size-sm);
}

.alert-success { background: rgba(34,197,94,0.08);  border-color: rgba(34,197,94,0.3);  color: #15803d; }
.alert-error   { background: rgba(239,68,68,0.08);  border-color: rgba(239,68,68,0.3);  color: #b91c1c; }
.alert-warning { background: rgba(245,158,11,0.08); border-color: rgba(245,158,11,0.3); color: #b45309; }
.alert-info    { background: rgba(59,130,246,0.08); border-color: rgba(59,130,246,0.3); color: #1d4ed8; }

.alert-icon { font-size: 1.1rem; flex-shrink: 0; margin-top: 1px; }
.alert-close {
  margin-left: auto; background: none; border: none;
  cursor: pointer; font-size: 1.1rem; color: inherit; opacity: 0.6;
  padding: 0; line-height: 1; flex-shrink: 0;
}
.alert-close:hover { opacity: 1; }

/* ================================================================
   SEARCH & FILTER BAR
   ================================================================ */
.filter-bar {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
  padding: var(--space-4) var(--space-6);
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border-light);
  align-items: flex-end;
}

.filter-group {
  display: flex; flex-direction: column; gap: var(--space-2);
  min-width: 150px;
}

.filter-label {
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.filter-actions {
  display: flex; gap: var(--space-2);
  margin-left: auto;
}

/* ================================================================
   PAGINATION
   ================================================================ */
.pagination-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-6);
  border-top: 1px solid var(--color-border-light);
  flex-wrap: wrap;
  gap: var(--space-3);
}

.pagination {
  display: flex; gap: var(--space-1); list-style: none;
}

.page-btn {
  display: flex; align-items: center; justify-content: center;
  min-width: 32px; height: 32px;
  padding: 0 var(--space-2);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
  background: #fff;
  transition: all var(--transition);
  text-decoration: none;
}
.page-btn:hover { border-color: var(--color-accent); color: var(--color-accent); }
.page-btn.active {
  background: var(--color-navy);
  border-color: var(--color-navy);
  color: #fff;
}
.page-ellipsis { display: flex; align-items: center; padding: 0 var(--space-2); color: var(--color-text-muted); }
.pagination-info { font-size: var(--font-size-sm); color: var(--color-text-secondary); }

/* ================================================================
   MODAL
   ================================================================ */
.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.5);
  backdrop-filter: blur(3px);
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
}
.modal-overlay.open { display: flex; }

.modal {
  background: var(--color-bg-card);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 560px;
  max-height: 90vh;
  display: flex; flex-direction: column;
  overflow: hidden;
  animation: modalIn 0.2s ease;
}

@keyframes modalIn {
  from { opacity: 0; transform: scale(0.95) translateY(-10px); }
  to   { opacity: 1; transform: scale(1) translateY(0); }
}

.modal-header {
  padding: var(--space-5) var(--space-6);
  border-bottom: 1px solid var(--color-border-light);
  display: flex; align-items: center; justify-content: space-between;
}
.modal-title { font-size: var(--font-size-lg); font-weight: 700; }
.modal-close {
  background: none; border: none; cursor: pointer;
  font-size: 1.3rem; color: var(--color-text-muted);
  display: flex; align-items: center;
  transition: color var(--transition);
}
.modal-close:hover { color: var(--color-danger); }
.modal-body { padding: var(--space-6); overflow-y: auto; flex: 1; }
.modal-footer {
  padding: var(--space-4) var(--space-6);
  border-top: 1px solid var(--color-border-light);
  display: flex; justify-content: flex-end; gap: var(--space-3);
}

/* ================================================================
   CHARTS
   ================================================================ */
.chart-container {
  position: relative;
  width: 100%;
  padding: var(--space-4);
}

.charts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: var(--space-5);
  margin-bottom: var(--space-6);
}

/* ================================================================
   STUDENT PHOTO
   ================================================================ */
.student-photo {
  width: 80px; height: 80px;
  border-radius: var(--radius-md);
  object-fit: cover;
  border: 2px solid var(--color-border);
}

.student-photo-placeholder {
  width: 80px; height: 80px;
  border-radius: var(--radius-md);
  background: var(--color-navy);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.8rem; font-weight: 700;
  color: #fff;
  border: 2px solid var(--color-border);
}

/* ================================================================
   LOGIN PAGE
   ================================================================ */
.login-page {
  min-height: 100vh;
  display: flex;
  background: var(--color-navy);
}

.login-left {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-12);
  background: linear-gradient(135deg, var(--color-navy) 0%, var(--color-navy-mid) 100%);
  position: relative;
  overflow: hidden;
}

.login-left::before {
  content: '';
  position: absolute;
  top: -50%; left: -50%;
  width: 200%; height: 200%;
  background: radial-gradient(circle at 30% 50%, rgba(34,197,94,0.08) 0%, transparent 60%);
}

.login-hero { position: relative; z-index: 1; max-width: 480px; }

.login-logo {
  display: flex; align-items: center; gap: var(--space-4);
  margin-bottom: var(--space-10);
}
.login-logo-icon {
  width: 52px; height: 52px;
  background: var(--color-accent);
  border-radius: var(--radius-lg);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.4rem; font-weight: 800;
  color: var(--color-navy);
}
.login-logo-text { font-size: var(--font-size-xl); font-weight: 800; color: #fff; }
.login-logo-sub { font-size: var(--font-size-sm); color: var(--color-text-on-navy); opacity: 0.7; }

.login-tagline {
  font-size: var(--font-size-3xl);
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
  margin-bottom: var(--space-4);
}
.login-tagline span { color: var(--color-accent); }

.login-desc {
  font-size: var(--font-size-md);
  color: var(--color-text-on-navy);
  opacity: 0.7;
  line-height: 1.7;
  margin-bottom: var(--space-8);
}

.login-features {
  display: flex; flex-direction: column; gap: var(--space-3);
}
.login-feature {
  display: flex; align-items: center; gap: var(--space-3);
  font-size: var(--font-size-sm);
  color: var(--color-text-on-navy);
  opacity: 0.8;
}
.login-feature i { color: var(--color-accent); width: 16px; text-align: center; }

.login-right {
  width: 480px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg);
  padding: var(--space-10) var(--space-10);
}

.login-form-card {
  width: 100%;
  max-width: 380px;
}

.login-form-title {
  font-size: var(--font-size-2xl);
  font-weight: 800;
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
}
.login-form-sub {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-8);
}

.login-form .form-control {
  padding: var(--space-4);
  font-size: var(--font-size-base);
}

.login-btn {
  width: 100%;
  padding: var(--space-4);
  font-size: var(--font-size-base);
  margin-top: var(--space-2);
}

.login-footer-links {
  display: flex; justify-content: space-between;
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-top: var(--space-6);
}
.login-footer-links a { color: var(--color-info); }

/* Student login variant */
.login-student .login-left {
  background: linear-gradient(135deg, #0f2044 0%, #1e4080 100%);
}
.login-student .login-logo-icon { background: #3b82f6; }
.login-student .login-tagline span { color: #60a5fa; }

/* ================================================================
   RESPONSIVE
   ================================================================ */
@media (max-width: 1024px) {
  :root { --sidebar-width: 200px; }
  .page-content { padding: var(--space-4) var(--space-5); }
  .charts-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .sidebar { transform: translateX(-100%); }
  .sidebar.open { transform: translateX(0); }
  .main-content { margin-left: 0; }
  .login-page { flex-direction: column; }
  .login-left { display: none; }
  .login-right { width: 100%; padding: var(--space-8) var(--space-6); }
  .filter-bar { flex-direction: column; }
  .filter-actions { margin-left: 0; }
  .stat-grid { grid-template-columns: 1fr 1fr; }
  .page-header { flex-direction: column; }
}

@media (max-width: 480px) {
  .stat-grid { grid-template-columns: 1fr; }
}

/* ================================================================
   PRINT
   ================================================================ */
@media print {
  .sidebar, .topbar, .page-actions, .filter-bar,
  .pagination-nav, .action-btns { display: none !important; }
  .main-content { margin-left: 0; }
  .card { box-shadow: none; border: 1px solid #ccc; }
  body { background: white; }
}

/* ================================================================
   UTILITY CLASSES
   ================================================================ */
.text-right  { text-align: right; }
.text-center { text-align: center; }
.text-left   { text-align: left; }
.text-muted  { color: var(--color-text-muted); }
.text-success { color: var(--color-success); }
.text-danger  { color: var(--color-danger); }
.text-warning { color: var(--color-warning); }
.text-info    { color: var(--color-info); }
.font-bold    { font-weight: 700; }
.font-medium  { font-weight: 500; }
.font-sm      { font-size: var(--font-size-sm); }
.font-xs      { font-size: var(--font-size-xs); }

.d-flex    { display: flex; }
.d-none    { display: none; }
.gap-2     { gap: var(--space-2); }
.gap-3     { gap: var(--space-3); }
.gap-4     { gap: var(--space-4); }
.align-center { align-items: center; }
.justify-between { justify-content: space-between; }
.flex-wrap { flex-wrap: wrap; }
.flex-1    { flex: 1; }

.mt-1 { margin-top: var(--space-1); }
.mt-2 { margin-top: var(--space-2); }
.mt-4 { margin-top: var(--space-4); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }

.w-full { width: 100%; }
.rounded { border-radius: var(--radius-md); }
.overflow-hidden { overflow: hidden; }
.relative { position: relative; }

/* Divider */
.divider {
  height: 1px; background: var(--color-border-light);
  margin: var(--space-6) 0; border: none;
}

/* Empty state */
.empty-state {
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  padding: var(--space-12) var(--space-8);
  text-align: center;
  color: var(--color-text-muted);
}
.empty-state i { font-size: 3rem; margin-bottom: var(--space-4); opacity: 0.4; }
.empty-state h3 { font-size: var(--font-size-lg); color: var(--color-text-secondary); margin-bottom: var(--space-2); }

/* Loading spinner */
.spinner {
  width: 20px; height: 20px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: currentColor;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  display: inline-block;
}
@keyframes spin { to { transform: rotate(360deg); } }