/* ============================================================
   STUDENT SERVICES SYSTEM — DESIGN SYSTEM
   60% White | 30% Blue (#0056B3) | 10% Black (#121212)
   ============================================================ */

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

/* ---- CSS Variables ---- */
:root {
  /* 60% Dominant — White/Light */
  --color-bg:          #F8F9FA;
  --color-surface:     #FFFFFF;
  --color-surface-2:   #F1F3F5;
  --color-border:      #E2E6EA;

  /* 30% Secondary — Blue */
  --color-primary:     #0056B3;
  --color-primary-dark:#00408A;
  --color-primary-light:#E8F0FB;
  --color-primary-muted:#5B9BD5;

  /* 10% Accent — Black */
  --color-text:        #121212;
  --color-text-secondary: #555F6E;
  --color-text-muted:  #8A94A0;
  --color-text-inverse:#FFFFFF;

  /* Status Colors */
  --color-draft:       #6C757D;
  --color-pending:     #B45309;
  --color-pending-bg:  #FEF3C7;
  --color-progress:    #0056B3;
  --color-progress-bg: #E8F0FB;
  --color-resolved:    #157A3C;
  --color-resolved-bg: #D1FAE5;
  --color-rejected:    #B91C1C;
  --color-rejected-bg: #FEE2E2;
  --color-draft-bg:    #F1F3F5;

  /* Semantic */
  --color-error:       #B91C1C;
  --color-error-bg:    #FEE2E2;
  --color-success:     #157A3C;
  --color-success-bg:  #D1FAE5;
  --color-warning:     #B45309;
  --color-warning-bg:  #FEF3C7;

  /* Shadows */
  --shadow-sm:   0 1px 2px 0 rgba(0,0,0,0.05);
  --shadow-md:   0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -1px rgba(0,0,0,0.06);
  --shadow-lg:   0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);
  --shadow-xl:   0 20px 25px -5px rgba(0,0,0,0.1), 0 10px 10px -5px rgba(0,0,0,0.04);

  /* 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;
  --space-16: 4rem;

  /* Border Radius */
  --radius-sm:  4px;
  --radius-md:  6px;
  --radius-lg:  8px;
  --radius-xl:  12px;
  --radius-full:9999px;

  /* Typography */
  --font-family: 'Inter', system-ui, -apple-system, sans-serif;
  --text-xs:    0.75rem;
  --text-sm:    0.875rem;
  --text-base:  1rem;
  --text-lg:    1.125rem;
  --text-xl:    1.25rem;
  --text-2xl:   1.5rem;
  --text-3xl:   1.875rem;
  --text-4xl:   2.25rem;

  /* Transitions */
  --transition: 0.18s ease;
  --transition-slow: 0.3s 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(--text-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--color-primary); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; display: block; }
ul, ol { list-style: none; }
button { cursor: pointer; font-family: var(--font-family); }
input, textarea, select { font-family: var(--font-family); }
svg { display: inline-block; vertical-align: middle; flex-shrink: 0; }

/* ---- Layout ---- */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}
.container-sm { max-width: 768px; margin: 0 auto; padding: 0 var(--space-6); }
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.w-full { width: 100%; }
.grid { display: grid; }
.grid-1 { grid-template-columns: 1fr; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* ---- Typography ---- */
h1 { font-size: var(--text-4xl); font-weight: 700; line-height: 1.2; }
h2 { font-size: var(--text-3xl); font-weight: 700; line-height: 1.25; }
h3 { font-size: var(--text-2xl); font-weight: 600; line-height: 1.3; }
h4 { font-size: var(--text-xl); font-weight: 600; line-height: 1.35; }
h5 { font-size: var(--text-lg); font-weight: 600; }
h6 { font-size: var(--text-base); font-weight: 600; }
p { color: var(--color-text-secondary); line-height: 1.7; }
.text-xs    { font-size: var(--text-xs); }
.text-sm    { font-size: var(--text-sm); }
.text-lg    { font-size: var(--text-lg); }
.text-muted { color: var(--color-text-muted); }
.text-secondary { color: var(--color-text-secondary); }
.text-primary { color: var(--color-primary); }
.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }
.text-center { text-align: center; }

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.625rem var(--space-5);
  font-size: var(--text-sm);
  font-weight: 500;
  border-radius: var(--radius-md);
  border: 1.5px solid transparent;
  transition: background-color var(--transition), border-color var(--transition),
              color var(--transition), box-shadow var(--transition), opacity var(--transition);
  white-space: nowrap;
  user-select: none;
}
.btn:disabled { opacity: 0.48; cursor: not-allowed; pointer-events: none; }
.btn svg { width: 16px; height: 16px; }

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-text-inverse);
  border-color: var(--color-primary);
}
.btn-primary:hover { background-color: var(--color-primary-dark); border-color: var(--color-primary-dark); text-decoration: none; }

.btn-outline {
  background-color: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.btn-outline:hover { background-color: var(--color-primary-light); text-decoration: none; }

.btn-ghost {
  background-color: transparent;
  color: var(--color-text-secondary);
  border-color: var(--color-border);
}
.btn-ghost:hover { background-color: var(--color-surface-2); color: var(--color-text); text-decoration: none; }

.btn-danger {
  background-color: var(--color-rejected);
  color: #fff;
  border-color: var(--color-rejected);
}
.btn-danger:hover { background-color: #991b1b; text-decoration: none; }
.btn-danger:disabled { opacity: 0.4; }

.btn-sm { padding: 0.4rem var(--space-4); font-size: var(--text-xs); }
.btn-lg { padding: 0.75rem var(--space-8); font-size: var(--text-base); }
.btn-icon { padding: 0.5rem; border-radius: var(--radius-md); }

/* ---- Form Elements ---- */
.form-group { display: flex; flex-direction: column; gap: var(--space-2); }
.form-label {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text);
}
.form-label .required { color: var(--color-rejected); margin-left: 2px; }
.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 0.625rem var(--space-4);
  font-size: var(--text-sm);
  color: var(--color-text);
  background-color: var(--color-surface);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
  line-height: 1.5;
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(0, 86, 179, 0.12);
}
.form-input::placeholder, .form-textarea::placeholder { color: var(--color-text-muted); }
.form-input.error, .form-select.error, .form-textarea.error {
  border-color: var(--color-error);
  box-shadow: 0 0 0 3px rgba(185,28,28,0.1);
}
.form-textarea { resize: vertical; min-height: 120px; }
.form-hint { font-size: var(--text-xs); color: var(--color-text-muted); }
.form-error { font-size: var(--text-xs); color: var(--color-error); display: none; }
.form-error.visible { display: block; }

.input-wrapper { position: relative; }
.input-wrapper .form-input { padding-right: 2.75rem; }
.input-icon-right {
  position: absolute; right: var(--space-3); top: 50%;
  transform: translateY(-50%);
  background: none; border: none; padding: 0;
  color: var(--color-text-muted);
  display: flex; align-items: center;
}
.input-icon-right:hover { color: var(--color-text); }
.input-icon-right svg { width: 18px; height: 18px; }

.form-checkbox-wrapper {
  display: flex; align-items: center; gap: var(--space-2);
  font-size: var(--text-sm); color: var(--color-text-secondary); cursor: pointer;
}
.form-checkbox-wrapper input[type="checkbox"] {
  width: 16px; height: 16px; accent-color: var(--color-primary); cursor: pointer;
}

/* ---- Cards ---- */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: var(--space-6);
}
.card-header {
  display: flex; align-items: center; justify-content: space-between;
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--space-5);
}
.card-title { font-size: var(--text-lg); font-weight: 600; color: var(--color-text); }

/* ---- Status Badges ---- */
.badge {
  display: inline-flex; align-items: center;
  padding: 0.2rem 0.6rem;
  font-size: var(--text-xs);
  font-weight: 600;
  border-radius: var(--radius-full);
  letter-spacing: 0.01em;
}
.badge-draft     { background: var(--color-draft-bg);    color: var(--color-draft); }
.badge-pending   { background: var(--color-pending-bg);  color: var(--color-pending); }
.badge-progress  { background: var(--color-progress-bg); color: var(--color-progress); }
.badge-resolved  { background: var(--color-resolved-bg); color: var(--color-resolved); }
.badge-rejected  { background: var(--color-rejected-bg); color: var(--color-rejected); }

/* ---- Alerts / Banners ---- */
.alert {
  display: flex; align-items: flex-start; gap: var(--space-3);
  padding: var(--space-4);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  line-height: 1.5;
}
.alert svg { width: 18px; height: 18px; flex-shrink: 0; margin-top: 1px; }
.alert-error   { background: var(--color-error-bg); color: var(--color-error); border: 1px solid rgba(185,28,28,0.2); }
.alert-success { background: var(--color-success-bg); color: var(--color-success); border: 1px solid rgba(21,122,60,0.2); }
.alert-warning { background: var(--color-warning-bg); color: var(--color-warning); border: 1px solid rgba(180,83,9,0.2); }
.alert-info    { background: var(--color-primary-light); color: var(--color-primary); border: 1px solid rgba(0,86,179,0.2); }
.alert.hidden  { display: none; }

/* ---- Toast Notifications ---- */
#toast-container {
  position: fixed;
  bottom: var(--space-6); right: var(--space-6);
  display: flex; flex-direction: column; gap: var(--space-3);
  z-index: 9999;
}
.toast {
  display: flex; align-items: center; gap: var(--space-3);
  padding: 0.875rem var(--space-5);
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  border-left: 4px solid;
  min-width: 280px; max-width: 400px;
  font-size: var(--text-sm);
  animation: toastIn 0.3s ease;
}
.toast-icon svg { width: 18px; height: 18px; }
.toast-success { border-color: var(--color-success); }
.toast-success .toast-icon { color: var(--color-success); }
.toast-error   { border-color: var(--color-error); }
.toast-error .toast-icon { color: var(--color-error); }
.toast-info    { border-color: var(--color-primary); }
.toast-info .toast-icon { color: var(--color-primary); }
.toast-hide { animation: toastOut 0.4s ease forwards; }
@keyframes toastIn  { from { opacity:0; transform:translateX(40px); } to { opacity:1; transform:translateX(0); } }
@keyframes toastOut { from { opacity:1; transform:translateX(0); } to { opacity:0; transform:translateX(40px); } }

/* ---- Modal Overlay ---- */
.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(18,18,18,0.45);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  display: flex; align-items: center; justify-content: center;
  z-index: 1000;
  padding: var(--space-4);
  animation: fadeIn 0.2s ease;
}
.modal-overlay.hidden { display: none; }
.modal {
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  width: 100%; max-width: 480px;
  max-height: 90vh; overflow-y: auto;
  animation: slideUp 0.25s ease;
  position: relative;
}
.modal-wide { max-width: 640px; }
.modal-header {
  display: flex; align-items: flex-start; justify-content: space-between;
  padding: var(--space-6) var(--space-6) 0;
}
.modal-title { font-size: var(--text-xl); font-weight: 700; color: var(--color-text); }
.modal-subtitle { font-size: var(--text-sm); color: var(--color-text-secondary); margin-top: var(--space-1); }
.modal-close {
  background: none; border: none;
  color: var(--color-text-muted); padding: var(--space-1);
  border-radius: var(--radius-sm);
  display: flex; align-items: center;
  transition: color var(--transition), background var(--transition);
}
.modal-close:hover { color: var(--color-text); background: var(--color-surface-2); }
.modal-close svg { width: 20px; height: 20px; }
.modal-body { padding: var(--space-6); }
.modal-footer {
  padding: 0 var(--space-6) var(--space-6);
  display: flex; gap: var(--space-3); justify-content: flex-end;
}
.modal-footer-center { justify-content: center; }
@keyframes fadeIn  { from { opacity:0; } to { opacity:1; } }
@keyframes slideUp { from { opacity:0; transform:translateY(20px) scale(0.98); } to { opacity:1; transform:translateY(0) scale(1); } }

/* ---- Navigation / Header ---- */
.site-header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky; top: 0; z-index: 100;
  box-shadow: var(--shadow-sm);
}
.site-header .container {
  display: flex; align-items: center; justify-content: space-between;
  height: 64px;
}
.logo {
  display: flex; align-items: center; gap: var(--space-3);
  color: var(--color-text); font-weight: 700;
  font-size: var(--text-lg); text-decoration: none;
}
.logo:hover { text-decoration: none; }
.logo svg { color: var(--color-primary); }
.logo-text { display: flex; flex-direction: column; line-height: 1.1; }
.logo-title { font-size: var(--text-base); font-weight: 700; color: var(--color-text); }
.logo-sub { font-size: var(--text-xs); font-weight: 400; color: var(--color-text-muted); }
.header-actions { display: flex; align-items: center; gap: var(--space-3); }

/* ---- Dashboard Layout ---- */
.dashboard-layout { display: flex; min-height: 100vh; }
.sidebar {
  width: 256px; flex-shrink: 0;
  background: var(--color-surface);
  border-right: 1px solid var(--color-border);
  display: flex; flex-direction: column;
  position: sticky; top: 0; height: 100vh;
  overflow: hidden;
}
.sidebar-header {
  padding: var(--space-6);
  border-bottom: 1px solid var(--color-border);
}
.sidebar-nav { padding: var(--space-4) var(--space-3); flex: 1; overflow-y: auto; }
.nav-section { margin-bottom: var(--space-6); }
.nav-section-label {
  font-size: var(--text-xs); font-weight: 600;
  color: var(--color-text-muted); letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0 var(--space-3) var(--space-2);
}
.nav-item {
  display: flex; align-items: center; gap: var(--space-3);
  padding: 0.6rem var(--space-3);
  border-radius: var(--radius-md);
  font-size: var(--text-sm); font-weight: 500;
  color: var(--color-text-secondary);
  transition: background var(--transition), color var(--transition);
  cursor: pointer; text-decoration: none;
}
.nav-item svg { width: 18px; height: 18px; flex-shrink: 0; }
.nav-item:hover { background: var(--color-surface-2); color: var(--color-text); text-decoration: none; }
.nav-item.active { background: var(--color-primary-light); color: var(--color-primary); font-weight: 600; }
.sidebar-footer {
  padding: var(--space-4) var(--space-3);
  border-top: 1px solid var(--color-border);
}
.user-info {
  display: flex; align-items: center; gap: var(--space-3);
  padding: var(--space-3);
  border-radius: var(--radius-md);
}
.user-avatar {
  width: 36px; height: 36px;
  border-radius: var(--radius-full);
  background: var(--color-primary-light);
  color: var(--color-primary);
  display: flex; align-items: center; justify-content: center;
  font-size: var(--text-sm); font-weight: 700;
  flex-shrink: 0;
}
.user-name  { font-size: var(--text-sm); font-weight: 600; color: var(--color-text); line-height: 1.3; }
.user-role  { font-size: var(--text-xs); color: var(--color-text-muted); }

.main-content { flex: 1; min-width: 0; background: var(--color-bg); }
.page-header {
  padding: var(--space-8) var(--space-8) var(--space-6);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface);
  display: flex; align-items: flex-start; justify-content: space-between; gap: var(--space-4);
}
.page-title { font-size: var(--text-2xl); font-weight: 700; color: var(--color-text); }
.page-subtitle { font-size: var(--text-sm); color: var(--color-text-secondary); margin-top: var(--space-1); }
.page-body { padding: var(--space-8); }

/* ---- Data Table ---- */
.table-wrapper { overflow-x: auto; border-radius: var(--radius-lg); border: 1px solid var(--color-border); }
.data-table { width: 100%; border-collapse: collapse; font-size: var(--text-sm); }
.data-table th {
  background: var(--color-surface-2);
  padding: var(--space-3) var(--space-4);
  text-align: left;
  font-size: var(--text-xs); font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase; letter-spacing: 0.06em;
  border-bottom: 1px solid var(--color-border);
  white-space: nowrap;
}
.data-table th:first-child { padding-left: var(--space-5); }
.data-table th:last-child  { padding-right: var(--space-5); }
.data-table td {
  padding: var(--space-4);
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text);
  vertical-align: middle;
}
.data-table td:first-child { padding-left: var(--space-5); }
.data-table td:last-child  { padding-right: var(--space-5); }
.data-table tr:last-child td { border-bottom: none; }
.data-table tbody tr { transition: background var(--transition); }
.data-table tbody tr:hover { background: var(--color-surface-2); }
.data-table .row-link { cursor: pointer; }
.type-icon { width: 18px; height: 18px; color: var(--color-primary); }

/* ---- Toolbar / Filters ---- */
.toolbar {
  display: flex; align-items: center; gap: var(--space-3);
  margin-bottom: var(--space-5);
  flex-wrap: wrap;
}
.toolbar-search {
  display: flex; align-items: center;
  background: var(--color-surface);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 0 var(--space-3);
  gap: var(--space-2);
  flex: 1; min-width: 200px; max-width: 320px;
}
.toolbar-search svg { width: 16px; height: 16px; color: var(--color-text-muted); flex-shrink: 0; }
.toolbar-search input {
  border: none; outline: none; background: transparent;
  font-size: var(--text-sm); color: var(--color-text);
  padding: 0.6rem 0; width: 100%;
}
.toolbar-search input::placeholder { color: var(--color-text-muted); }
.toolbar-select {
  padding: 0.575rem var(--space-4);
  font-size: var(--text-sm);
  background: var(--color-surface);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  outline: none;
  cursor: pointer;
}
.toolbar-select:focus { border-color: var(--color-primary); }

/* ---- Empty State ---- */
.empty-state {
  text-align: center;
  padding: var(--space-16) var(--space-8);
  display: flex; flex-direction: column; align-items: center; gap: var(--space-4);
}
.empty-state-icon {
  width: 64px; height: 64px;
  background: var(--color-surface-2);
  border-radius: var(--radius-full);
  display: flex; align-items: center; justify-content: center;
  color: var(--color-text-muted);
}
.empty-state-icon svg { width: 28px; height: 28px; }
.empty-state h3 { font-size: var(--text-lg); color: var(--color-text); }
.empty-state p  { font-size: var(--text-sm); color: var(--color-text-muted); max-width: 320px; }

/* ---- Loading Spinner ---- */
.spinner {
  display: inline-block;
  width: 20px; height: 20px;
  border: 2px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
.spinner-lg { width: 36px; height: 36px; border-width: 3px; }
@keyframes spin { to { transform: rotate(360deg); } }
.loading-overlay {
  display: flex; align-items: center; justify-content: center;
  padding: var(--space-16);
}

/* ---- Status Timeline ---- */
.timeline { display: flex; flex-direction: column; gap: 0; }
.timeline-step { display: flex; gap: var(--space-4); position: relative; }
.timeline-step:not(:last-child) .timeline-dot::after {
  content: '';
  position: absolute;
  top: 28px; left: 11px;
  width: 2px; height: calc(100% + var(--space-2));
  background: var(--color-border);
}
.timeline-dot {
  position: relative;
  width: 24px; height: 24px; flex-shrink: 0;
  border-radius: 50%;
  border: 2px solid var(--color-border);
  display: flex; align-items: center; justify-content: center;
  margin-top: 2px;
}
.timeline-dot.done  { background: var(--color-primary); border-color: var(--color-primary); }
.timeline-dot.done svg { color: #fff; width: 12px; height: 12px; }
.timeline-dot.active { border-color: var(--color-primary); background: var(--color-primary-light); }
.timeline-content { padding-bottom: var(--space-6); }
.timeline-label { font-size: var(--text-sm); font-weight: 600; color: var(--color-text); }
.timeline-date  { font-size: var(--text-xs); color: var(--color-text-muted); margin-top: 2px; }

/* ---- Segmented Control ---- */
.segmented-control {
  display: inline-flex;
  background: var(--color-surface-2);
  border-radius: var(--radius-lg);
  padding: 3px;
  gap: 2px;
}
.seg-btn {
  padding: 0.45rem var(--space-5);
  font-size: var(--text-sm); font-weight: 500;
  border: none; background: transparent; border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  transition: background var(--transition), color var(--transition), box-shadow var(--transition);
}
.seg-btn.active {
  background: var(--color-surface);
  color: var(--color-primary);
  box-shadow: var(--shadow-sm);
  font-weight: 600;
}
.seg-btn:hover:not(.active) { background: rgba(0,0,0,0.04); color: var(--color-text); }

/* ---- File Upload ---- */
.file-upload-area {
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  text-align: center;
  cursor: pointer;
  transition: border-color var(--transition), background var(--transition);
}
.file-upload-area:hover, .file-upload-area.dragover {
  border-color: var(--color-primary);
  background: var(--color-primary-light);
}
.file-upload-area svg { width: 32px; height: 32px; color: var(--color-text-muted); margin: 0 auto var(--space-3); }
.file-list { display: flex; flex-direction: column; gap: var(--space-2); margin-top: var(--space-3); }
.file-item {
  display: flex; align-items: center; gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface-2);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
}
.file-item svg { width: 16px; height: 16px; color: var(--color-primary); flex-shrink: 0; }
.file-name { flex: 1; color: var(--color-text); min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.file-remove {
  background: none; border: none;
  color: var(--color-text-muted); padding: 2px;
  display: flex; align-items: center;
  border-radius: var(--radius-sm);
}
.file-remove:hover { color: var(--color-error); }
.file-remove svg { width: 14px; height: 14px; }

/* ---- Stat Tiles ---- */
.stat-tile {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  box-shadow: var(--shadow-sm);
}
.stat-label { font-size: var(--text-xs); font-weight: 600; color: var(--color-text-muted); text-transform: uppercase; letter-spacing: 0.06em; }
.stat-value { font-size: var(--text-3xl); font-weight: 700; color: var(--color-text); margin-top: var(--space-2); line-height: 1; }
.stat-sub   { font-size: var(--text-xs); color: var(--color-text-muted); margin-top: var(--space-2); }
.stat-tile.highlight { background: var(--color-primary); border-color: var(--color-primary-dark); }
.stat-tile.highlight .stat-label,
.stat-tile.highlight .stat-value,
.stat-tile.highlight .stat-sub  { color: #fff; }
.stat-tile.highlight .stat-value { color: #fff; }

/* ---- Checkbox in Table ---- */
.table-checkbox { width: 16px; height: 16px; accent-color: var(--color-primary); cursor: pointer; }

/* ---- Pagination ---- */
.pagination {
  display: flex; align-items: center; justify-content: center; gap: var(--space-2);
  margin-top: var(--space-6);
}
.page-btn {
  width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius-md);
  border: 1.5px solid var(--color-border);
  background: var(--color-surface);
  font-size: var(--text-sm); color: var(--color-text-secondary);
  cursor: pointer; transition: all var(--transition);
}
.page-btn:hover { border-color: var(--color-primary); color: var(--color-primary); }
.page-btn.active { background: var(--color-primary); border-color: var(--color-primary); color:#fff; font-weight: 600; }
.page-btn:disabled { opacity: 0.4; cursor: not-allowed; }

/* ---- Info Card (Landing) ---- */
.info-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8) var(--space-6);
  text-align: center;
  box-shadow: var(--shadow-md);
  transition: box-shadow var(--transition), transform var(--transition);
  cursor: pointer;
}
.info-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-2px); }
.info-card-icon {
  width: 52px; height: 52px;
  border-radius: var(--radius-xl);
  background: var(--color-primary-light);
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto var(--space-4);
  color: var(--color-primary);
}
.info-card-icon svg { width: 24px; height: 24px; }
.info-card h3 { font-size: var(--text-lg); font-weight: 600; color: var(--color-text); margin-bottom: var(--space-2); }
.info-card p  { font-size: var(--text-sm); color: var(--color-text-secondary); }

/* ---- Tabs (Admin Detail) ---- */
.tabs-header {
  display: flex; gap: 0;
  border-bottom: 2px solid var(--color-border);
  margin-bottom: var(--space-6);
}
.tab-btn {
  padding: var(--space-3) var(--space-5);
  font-size: var(--text-sm); font-weight: 500;
  border: none; background: transparent;
  color: var(--color-text-secondary);
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  transition: color var(--transition), border-color var(--transition);
}
.tab-btn.active { color: var(--color-primary); border-bottom-color: var(--color-primary); font-weight: 600; }
.tab-btn:hover:not(.active) { color: var(--color-text); }
.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* ---- Two-Column Layout (Admin Detail) ---- */
.two-col { display: grid; grid-template-columns: 1fr 360px; gap: var(--space-6); align-items: start; }
.admin-tools-panel {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  position: sticky; top: 80px;
}
.admin-tools-title { font-size: var(--text-base); font-weight: 700; color: var(--color-text); margin-bottom: var(--space-5); }

/* ---- Audit Log ---- */
.audit-item {
  display: flex; gap: var(--space-4);
  padding: var(--space-4) 0;
  border-bottom: 1px solid var(--color-border);
  font-size: var(--text-sm);
}
.audit-item:last-child { border-bottom: none; }
.audit-dot {
  width: 10px; height: 10px;
  border-radius: 50%; background: var(--color-primary);
  flex-shrink: 0; margin-top: 5px;
}
.audit-time  { color: var(--color-text-muted); font-size: var(--text-xs); }
.audit-text  { color: var(--color-text-secondary); }
.audit-admin { color: var(--color-text); font-weight: 500; }

/* ---- Image Placeholder ---- */
.img-placeholder {
  background: var(--color-surface-2);
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-lg);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: var(--space-3);
  color: var(--color-text-muted);
  padding: var(--space-8);
  font-size: var(--text-sm);
}
.img-placeholder svg { width: 32px; height: 32px; }

/* ---- Divider ---- */
.divider { border: none; border-top: 1px solid var(--color-border); margin: var(--space-4) 0; }

/* ---- Admin Delete Modal ---- */
.delete-confirm-input {
  margin-top: var(--space-3);
  font-family: monospace;
  font-size: var(--text-sm);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

/* ---- Responsive ---- */
@media (max-width: 1024px) {
  .two-col { grid-template-columns: 1fr; }
  .admin-tools-panel { position: static; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .sidebar { display: none; }
  .page-body { padding: var(--space-5); }
  .page-header { padding: var(--space-5); flex-direction: column; }
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .modal { max-width: 100%; border-radius: var(--radius-lg); }
  h1 { font-size: var(--text-3xl); }
  h2 { font-size: var(--text-2xl); }
  .toolbar { flex-direction: column; align-items: stretch; }
  .toolbar-search { max-width: 100%; }
}
@media (max-width: 480px) {
  .grid-4 { grid-template-columns: 1fr; }
  .container { padding: 0 var(--space-4); }
}