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

:root {
  --primary: #4F46E5;
  --primary-light: #EEF2FF;
  --primary-dark: #3730A3;
  --bg: #F8F9FC;
  --surface: #FFFFFF;
  --sidebar-bg: #FFFFFF;
  --border: #E5E7EB;
  --text: #111827;
  --text-muted: #6B7280;
  --text-light: #9CA3AF;
  --green: #10B981;
  --green-bg: #ECFDF5;
  --yellow: #F59E0B;
  --yellow-bg: #FFFBEB;
  --red: #EF4444;
  --red-bg: #FEF2F2;
  --blue: #3B82F6;
  --blue-bg: #EFF6FF;
  --gray: #6B7280;
  --gray-bg: #F3F4F6;
  --shadow: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.08), 0 2px 4px -1px rgba(0,0,0,0.04);
  --radius: 10px;
  --sidebar-width: 220px;
}

body.dark-mode {
  --bg: #111827;
  --surface: #1F2937;
  --sidebar-bg: #1F2937;
  --border: #374151;
  --text: #F9FAFB;
  --text-muted: #9CA3AF;
  --text-light: #6B7280;
  --primary-light: #1E1B4B;
}

body {
  font-family: 'DM Sans', sans-serif;
  background: var(--bg);
  color: var(--text);
  display: flex;
  min-height: 100vh;
}

/* SIDEBAR */
.sidebar {
  width: var(--sidebar-width);
  background: var(--sidebar-bg);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0; left: 0; bottom: 0;
  z-index: 100;
  padding: 0 0 24px;
}

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 22px 20px;
  border-bottom: 1px solid var(--border);
}

.logo-icon {
  width: 36px; height: 36px;
  background: var(--primary);
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  color: white;
  font-weight: 700;
  font-size: 16px;
}

.logo-text {
  font-weight: 700;
  font-size: 16px;
  color: var(--text);
}

.sidebar-nav {
  padding: 16px 12px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 8px;
  cursor: pointer;
  color: var(--text-muted);
  font-size: 14px;
  font-weight: 500;
  transition: all 0.15s ease;
  border: none;
  background: none;
  width: 100%;
  text-align: left;
}

.nav-item:hover { background: var(--bg); color: var(--text); }
.nav-item.active { background: var(--primary-light); color: var(--primary); }
.nav-item svg { width: 18px; height: 18px; flex-shrink: 0; }

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

/* TOPBAR */
.topbar {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 14px 28px;
  display: flex;
  align-items: center;
  gap: 16px;
  position: sticky;
  top: 0;
  z-index: 50;
}

.search-wrap {
  flex: 1;
  max-width: 340px;
  position: relative;
}

.search-wrap input {
  width: 100%;
  padding: 9px 14px 9px 38px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-family: 'DM Sans', sans-serif;
  font-size: 14px;
  background: var(--bg);
  color: var(--text);
  outline: none;
  transition: border 0.15s;
}

.search-wrap input:focus { border-color: var(--primary); }

.search-icon {
  position: absolute;
  left: 12px; top: 50%;
  transform: translateY(-50%);
  color: var(--text-light);
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-left: auto;
}

.notif-btn {
  position: relative;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-muted);
  padding: 4px;
}

.notif-dot {
  position: absolute;
  top: 2px; right: 2px;
  width: 8px; height: 8px;
  background: var(--red);
  border-radius: 50%;
  border: 2px solid white;
}

.user-chip {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 500;
  color: var(--text);
  position: relative;
}

.user-avatar {
  width: 32px; height: 32px;
  border-radius: 50%;
  background: var(--primary);
  color: white;
  display: flex; align-items: center; justify-content: center;
  font-size: 12px;
  font-weight: 700;
}

/* PAGE CONTENT */
.page { padding: 28px; display: none; }
.page.active { display: block; }
.page-title { font-size: 22px; font-weight: 700; color: var(--text); }
.page-sub { font-size: 13px; color: var(--text-muted); margin-top: 2px; }

/* STAT CARDS */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 24px;
}

.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: var(--shadow);
}

.stat-label { font-size: 12px; color: var(--text-muted); font-weight: 500; margin-bottom: 6px; }
.stat-value { font-size: 28px; font-weight: 700; color: var(--text); font-family: 'DM Mono', monospace; }
.stat-icon { width: 44px; height: 44px; border-radius: 10px; display: flex; align-items: center; justify-content: center; }

/* TABLE SECTION */
.section {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-top: 24px;
  box-shadow: var(--shadow);
}

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 20px;
  border-bottom: 1px solid var(--border);
}

.section-title { font-size: 15px; font-weight: 600; }

.btn-primary {
  background: var(--primary);
  color: white;
  border: none;
  padding: 9px 16px;
  border-radius: 8px;
  font-family: 'DM Sans', sans-serif;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: background 0.15s;
}

.btn-primary:hover { background: var(--primary-dark); }

table { width: 100%; border-collapse: collapse; }

th {
  text-align: left;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  padding: 12px 20px;
  border-bottom: 1px solid var(--border);
  background: var(--bg);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

td {
  padding: 14px 20px;
  font-size: 13px;
  border-bottom: 1px solid var(--border);
  color: var(--text);
}

tr:last-child td { border-bottom: none; }
tr:hover td { background: var(--bg); }
.doc-id { font-family: 'DM Mono', monospace; font-size: 12px; color: var(--text-muted); }
.doc-title { font-weight: 500; }

/* STATUS BADGES */
.badge { display: inline-flex; align-items: center; padding: 3px 10px; border-radius: 20px; font-size: 11px; font-weight: 600; }
.badge-review { background: var(--yellow-bg); color: #B45309; }
.badge-approved { background: var(--green-bg); color: #065F46; }
.badge-draft { background: var(--gray-bg); color: var(--gray); }
.badge-rejected { background: var(--red-bg); color: #B91C1C; }
.badge-archived { background: #F3F4F6; color: #374151; }
.badge-pending { background: var(--yellow-bg); color: #B45309; }

/* MODAL */
.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.4);
  z-index: 200;
  display: none;
  align-items: center;
  justify-content: center;
}

.modal-overlay.open { display: flex; }

.modal {
  background: white;
  border-radius: 12px;
  padding: 28px;
  width: 480px;
  max-width: 95vw;
  box-shadow: 0 20px 40px rgba(0,0,0,0.15);
}

.modal-title { font-size: 17px; font-weight: 700; margin-bottom: 20px; }
.form-group { margin-bottom: 16px; }

.form-label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 6px; color: var(--text); }

.form-input, .form-textarea {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-family: 'DM Sans', sans-serif;
  font-size: 14px;
  outline: none;
  transition: border 0.15s;
  color: var(--text);
  background: var(--surface);
}

.form-input:focus, .form-textarea:focus { border-color: var(--primary); }
.form-textarea { resize: vertical; min-height: 80px; }

.modal-actions { display: flex; gap: 10px; justify-content: flex-end; margin-top: 24px; }

.btn-secondary {
  background: none;
  border: 1px solid var(--border);
  padding: 9px 16px;
  border-radius: 8px;
  font-family: 'DM Sans', sans-serif;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  color: var(--text-muted);
}

.btn-secondary:hover { background: var(--bg); }

/* SETTINGS */
.settings-list { padding: 8px 0; }

.setting-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
}

.setting-item:last-child { border-bottom: none; }
.setting-label { font-size: 15px; font-weight: 500; }

.toggle {
  width: 44px; height: 24px;
  border-radius: 12px;
  background: var(--border);
  position: relative;
  transition: background 0.2s;
  cursor: pointer;
  border: none;
  flex-shrink: 0;
}

.toggle.on { background: var(--primary); }

.toggle::after {
  content: '';
  position: absolute;
  width: 18px; height: 18px;
  border-radius: 50%;
  background: white;
  top: 3px; left: 3px;
  transition: transform 0.2s;
  box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}

.toggle.on::after { transform: translateX(20px); }

/* EMPTY STATE */
.empty-state { text-align: center; padding: 48px 20px; color: var(--text-muted); }
.empty-state svg { margin-bottom: 12px; opacity: 0.4; }
.empty-state p { font-size: 14px; }

/* LOADING */
.loading { text-align: center; padding: 32px; color: var(--text-muted); font-size: 13px; }

/* TOAST */
.toast {
  position: fixed;
  bottom: 24px; right: 24px;
  background: var(--text);
  color: white;
  padding: 12px 18px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 500;
  z-index: 999;
  transform: translateY(80px);
  opacity: 0;
  transition: all 0.3s ease;
  box-shadow: var(--shadow-md);
}

.toast.show { transform: translateY(0); opacity: 1; }
.toast.success { background: var(--green); }
.toast.error { background: var(--red); }

/* USERS PAGE */
.users-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 16px;
  padding: 20px;
}

.user-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 14px;
    box-shadow: var(--shadow);
    position: relative;
}

.user-card-avatar {
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--primary);
  color: white;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700;
  font-size: 16px;
  flex-shrink: 0;
}

.user-card-name { font-weight: 600; font-size: 14px; }
.user-card-email { font-size: 12px; color: var(--text-muted); margin-top: 2px; }
.user-card-username { font-size: 11px; color: var(--text-light); margin-top: 2px; font-family: 'DM Mono', monospace; }

/* ROUTING PAGE */
.route-form {
  max-width: 560px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
}

select.form-input {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%236B7280' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
}

/* DETAIL PANEL */
.detail-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.3);
  z-index: 200;
  display: none;
}

.detail-overlay.open { display: block; }

.detail-panel {
  position: fixed;
  top: 0; right: -520px;
  width: 500px;
  height: 100vh;
  background: white;
  box-shadow: -4px 0 24px rgba(0,0,0,0.12);
  z-index: 201;
  display: flex;
  flex-direction: column;
  transition: right 0.3s ease;
  overflow: hidden;
}

.detail-panel.open { right: 0; }

.detail-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.detail-header-title { font-size: 16px; font-weight: 700; }

.detail-close {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-muted);
  padding: 4px;
  border-radius: 6px;
}

.detail-close:hover { background: var(--bg); }
.detail-body { flex: 1; overflow-y: auto; padding: 24px; }
.detail-section { margin-bottom: 24px; }

.detail-section-title {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.detail-field { margin-bottom: 12px; }
.detail-field-label { font-size: 11px; color: var(--text-light); margin-bottom: 3px; font-weight: 500; }
.detail-field-value { font-size: 14px; color: var(--text); font-weight: 500; }

.timeline { position: relative; }

.timeline-item {
  display: flex;
  gap: 14px;
  padding-bottom: 20px;
  position: relative;
}

.timeline-item:last-child { padding-bottom: 0; }

.timeline-dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--primary);
  flex-shrink: 0;
  margin-top: 4px;
  position: relative;
  z-index: 1;
}

.timeline-item:not(:last-child)::before {
  content: '';
  position: absolute;
  left: 4px; top: 14px;
  width: 2px;
  height: calc(100% - 10px);
  background: var(--border);
}

.timeline-content { flex: 1; }
.timeline-status { font-size: 13px; font-weight: 600; margin-bottom: 2px; }
.timeline-note { font-size: 12px; color: var(--text-muted); }
.timeline-time { font-size: 11px; color: var(--text-light); margin-top: 3px; }

/* NOTIFICATION DROPDOWN */
.notif-dropdown {
  position: absolute;
  top: 52px; right: 60px;
  width: 320px;
  background: white;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  z-index: 200;
  display: none;
  max-height: 400px;
  overflow: hidden;
  flex-direction: column;
}

.notif-dropdown.open { display: flex; }

.notif-dropdown-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
}

.notif-item {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  transition: background 0.15s;
}

.notif-item:last-child { border-bottom: none; }
.notif-item:hover { background: var(--bg); }
.notif-item-title { font-size: 13px; font-weight: 600; margin-bottom: 2px; }
.notif-item-desc { font-size: 12px; color: var(--text-muted); }
.notif-item-time { font-size: 11px; color: var(--text-light); margin-top: 3px; }
#notif-list { overflow-y: auto; max-height: 340px; }

/* USER DROPDOWN */
.user-dropdown {
  position: absolute;
  top: 44px; right: 0;
  width: 180px;
  background: white;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  z-index: 200;
  display: none;
  overflow: hidden;
}

.user-dropdown.open { display: block; }

.user-dropdown-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.15s;
  border-bottom: 1px solid var(--border);
}

.user-dropdown-item:last-child { border-bottom: none; }
.user-dropdown-item:hover { background: var(--bg); }

/* HIGHLIGHT */
.recent-highlight td { background: #FFFBEB !important; border-left: 3px solid var(--yellow); }
body.dark-mode .recent-highlight td { background: #1F1A0A !important; }

/* DARK MODE OVERRIDES */
body.dark-mode .notif-dropdown,
body.dark-mode .user-dropdown { background: var(--surface); border-color: var(--border); }

body.dark-mode .notif-item:hover,
body.dark-mode .user-dropdown-item:hover { background: var(--bg); }

body.dark-mode .modal,
body.dark-mode .detail-panel { background: var(--surface); }

body.dark-mode .toast {
    background: var(--text);
    color: var(--bg);
}

    body.dark-mode .toast.success {
        background: var(--green);
        color: white;
    }

    body.dark-mode .toast.error {
        background: var(--red);
        color: white;
    }
body.dark-mode .modal-overlay {
    background: rgba(0,0,0,0.6);
}

body.dark-mode .setting-item:hover {
    background: var(--bg);
}

body.dark-mode .form-input,
body.dark-mode .form-textarea { background: var(--bg); color: var(--text); border-color: var(--border); }

body.dark-mode th { background: var(--bg); color: var(--text-muted); }

/* MOBILE RESPONSIVE */
@media (max-width: 768px) {
  :root { --sidebar-width: 0px; }

  .sidebar {
    transform: translateX(-100%);
    transition: transform 0.3s ease;
    width: 220px;
    z-index: 300;
  }

  .sidebar.open { transform: translateX(0); }
  .main { margin-left: 0; width: 100%; }
  .topbar { padding: 12px 16px; }
  .search-wrap { max-width: 200px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .stat-card { padding: 14px; }
  .stat-value { font-size: 20px; }
  .stat-icon { width: 36px; height: 36px; }
  .page { padding: 12px; }
  .section { overflow: hidden; }
  table { display: block; overflow-x: auto; white-space: nowrap; width: 100%; }
  td, th { padding: 10px 12px; font-size: 12px; }
  .detail-panel { width: 100%; right: -100%; }
  .users-grid { grid-template-columns: 1fr; padding: 12px; }
  .route-form { max-width: 100%; }
  .modal { width: 95vw; padding: 20px; }
  .section-header { flex-wrap: wrap; gap: 10px; padding: 14px; }
  .page-title { font-size: 18px; }
  .btn-primary { font-size: 12px; padding: 8px 12px; }
  .topbar-right .user-chip span { display: none; }

  .hamburger {
    display: flex;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text);
    padding: 4px;
  }
}

@media (min-width: 769px) {
  .hamburger { display: none; }
}

.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.4);
  z-index: 299;
}

.sidebar-overlay.open { display: block; }