/* ============================================================
   STYLES.CSS — Atanex EDMS Design System
   Premium Professional Theme for Construction EDMS
   ============================================================ */

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

/* ─── Design Tokens ────────────────────────────────────────── */
:root {
  /* ── ATA Group Brand Colors ── */
  --primary:       #C41E3A;
  --primary-light: #E02040;
  --primary-dark:  #9B1530;
  --primary-bg:    #FFF0F2;
  --accent:        #1A1A2E;
  --accent-bg:     #F0F0F8;
  --success:       #059669;
  --success-bg:    #D1FAE5;
  --danger:        #DC2626;
  --danger-bg:     #FEE2E2;
  --warning:       #D97706;
  --warning-bg:    #FEF9C3;
  --purple:        #7C3AED;
  --purple-bg:     #EDE9FE;
  --teal:          #0D9488;
  --teal-bg:       #CCFBF1;

  /* Neutrals */
  --bg:            #F0F2F5;
  --surface:       #FFFFFF;
  --surface-2:     #F7F8FA;
  --border:        #E4E7EC;
  --border-light:  #F2F4F7;
  --text-primary:  #0D1117;
  --text-secondary:#4A5568;
  --text-muted:    #9AA3AF;
  --text-inverse:  #FFFFFF;

  /* Sidebar — deep dark with brand accent */
  --sidebar-bg:    #0D1117;
  --sidebar-w:     265px;
  --sidebar-text:  rgba(255,255,255,0.65);
  --sidebar-hover: rgba(196,30,58,0.15);
  --sidebar-active:rgba(196,30,58,0.22);
  --sidebar-border:rgba(255,255,255,0.07);

  /* Spacing */
  --space-1: 4px;   --space-2: 8px;   --space-3: 12px;
  --space-4: 16px;  --space-5: 20px;  --space-6: 24px;
  --space-8: 32px;  --space-10:40px;  --space-12:48px;

  /* Border Radius */
  --r-sm:  6px;   --r-md:  10px;  --r-lg:  14px;
  --r-xl:  20px;  --r-full:9999px;

  /* Shadows — deeper, more premium */
  --shadow-sm:  0 1px 4px rgba(0,0,0,.07), 0 1px 2px rgba(0,0,0,.04);
  --shadow-md:  0 4px 16px rgba(0,0,0,.09), 0 2px 6px rgba(0,0,0,.05);
  --shadow-lg:  0 12px 36px rgba(0,0,0,.11), 0 4px 12px rgba(0,0,0,.06);
  --shadow-xl:  0 24px 64px rgba(0,0,0,.14), 0 8px 24px rgba(0,0,0,.07);
  --shadow-red: 0 4px 18px rgba(196,30,58,0.35);

  /* Typography */
  --font-sans: 'Inter', system-ui, sans-serif;
  --font-body: 'DM Sans', system-ui, sans-serif;

  /* Transitions */
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --duration: 200ms;
}

/* ─── Reset ────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 14px; -webkit-font-smoothing: antialiased; }
body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text-primary);
  min-height: 100vh;
  overflow: hidden;
}
button { cursor: pointer; border: none; background: none; font-family: inherit; }
input, select, textarea { font-family: inherit; outline: none; }
a { text-decoration: none; color: inherit; }
ul, ol { list-style: none; }
img { max-width: 100%; display: block; }

/* ─── Layout ────────────────────────────────────────────────── */
#app {
  display: flex;
  height: 100vh;
  overflow: hidden;
}

/* ─── Sidebar ───────────────────────────────────────────────── */
#sidebar {
  width: var(--sidebar-w);
  min-width: var(--sidebar-w);
  background: var(--sidebar-bg);
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow: hidden;
  transition: width var(--duration) var(--ease), min-width var(--duration) var(--ease);
  position: relative;
  z-index: 100;
  box-shadow: 4px 0 20px rgba(0,0,0,0.15);
}

#sidebar.collapsed {
  width: 64px;
  min-width: 64px;
}

.sidebar-header {
  padding: var(--space-4) var(--space-4);
  border-bottom: 1px solid var(--sidebar-border);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  min-height: 72px;
}

.sidebar-logo {
  width: 38px;
  height: 38px;
  border-radius: var(--r-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  overflow: hidden;
  background: white;
  box-shadow: 0 2px 10px rgba(196,30,58,0.35);
}

.sidebar-logo img { width: 100%; height: 100%; object-fit: contain; }
.sidebar-logo svg { width: 20px; height: 20px; color: white; }

.sidebar-brand {
  overflow: hidden;
  transition: opacity var(--duration) var(--ease), width var(--duration) var(--ease);
}
.sidebar-brand h1 { font-family: var(--font-sans); font-size: 14px; font-weight: 800; color: white; white-space: nowrap; letter-spacing: -0.01em; }
.sidebar-brand p  { font-size: 9px; color: var(--sidebar-text); white-space: normal; margin-top: 2px; text-transform: uppercase; letter-spacing: 0.04em; line-height: 1.4; }
#sidebar.collapsed .sidebar-brand { opacity: 0; width: 0; }


.sidebar-toggle {
  margin-left: auto;
  width: 28px; height: 28px;
  background: var(--sidebar-hover);
  border-radius: var(--r-sm);
  display: flex; align-items: center; justify-content: center;
  color: var(--sidebar-text);
  transition: background var(--duration);
  flex-shrink: 0;
}
.sidebar-toggle:hover { background: rgba(255,255,255,0.15); color: white; }
.sidebar-toggle svg { width: 16px; height: 16px; }

/* Nav */
.sidebar-nav { flex: 1; padding: var(--space-3) var(--space-2); overflow-y: auto; overflow-x: hidden; }
.sidebar-nav::-webkit-scrollbar { width: 4px; }
.sidebar-nav::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.1); border-radius: 4px; }

.nav-section-label {
  font-family: var(--font-sans);
  font-size: 10px;
  font-weight: 600;
  color: rgba(255,255,255,0.35);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: var(--space-4) var(--space-3) var(--space-2);
  white-space: nowrap;
  overflow: hidden;
  transition: opacity var(--duration);
}
#sidebar.collapsed .nav-section-label { opacity: 0; }

.nav-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-3);
  border-radius: var(--r-md);
  color: var(--sidebar-text);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--duration) var(--ease);
  margin-bottom: 2px;
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

.nav-item:hover { background: var(--sidebar-hover); color: white; }
.nav-item.active {
  background: var(--sidebar-active);
  color: #FCA5A5;
  border-left: 2px solid var(--primary);
}
.nav-item.active .nav-icon { color: var(--primary); }
.nav-icon { width: 18px; height: 18px; flex-shrink: 0; }
.nav-label { flex: 1; transition: opacity var(--duration); }
#sidebar.collapsed .nav-label { opacity: 0; }

.nav-badge {
  background: var(--danger);
  color: white;
  font-size: 10px;
  font-weight: 700;
  padding: 1px 6px;
  border-radius: var(--r-full);
  min-width: 18px;
  text-align: center;
  transition: opacity var(--duration);
}
#sidebar.collapsed .nav-badge { opacity: 0; }

/* Project list in sidebar */
.sidebar-projects { padding: 0 var(--space-2) var(--space-3); }
.project-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--r-sm);
  color: var(--sidebar-text);
  font-size: 12px;
  cursor: pointer;
  transition: all var(--duration);
  white-space: nowrap;
  overflow: hidden;
}
.project-item:hover { background: var(--sidebar-hover); color: white; }
.project-dot { width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0; }
.project-name { overflow: hidden; text-overflow: ellipsis; transition: opacity var(--duration); }
#sidebar.collapsed .project-name { opacity: 0; }

.sidebar-footer {
  padding: var(--space-4);
  border-top: 1px solid var(--sidebar-border);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  overflow: hidden;
}

#sidebar.collapsed .sidebar-header {
  justify-content: center;
  padding: var(--space-4) 0;
}
#sidebar.collapsed .sidebar-logo {
  display: none;
}
#sidebar.collapsed .sidebar-toggle {
  margin-left: 0;
}

.user-avatar-sm {
  width: 36px; height: 36px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-sans);
  font-size: 12px; font-weight: 700;
  color: white;
  flex-shrink: 0;
  cursor: pointer;
}

.user-info { overflow: hidden; flex: 1; transition: opacity var(--duration); }
.user-info-name { font-size: 13px; font-weight: 600; color: white; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.user-info-role { font-size: 11px; color: var(--sidebar-text); white-space: nowrap; }
#sidebar.collapsed .user-info { opacity: 0; }

/* ─── Main Wrapper ─────────────────────────────────────────── */
#main-wrapper {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  min-width: 0;
}

/* ─── Header ───────────────────────────────────────────────── */
#header {
  height: 64px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 var(--space-6);
  gap: var(--space-4);
  flex-shrink: 0;
  box-shadow: var(--shadow-sm);
  z-index: 50;
}

.header-title { font-family: var(--font-sans); font-size: 16px; font-weight: 700; color: var(--text-primary); }
.header-subtitle { font-size: 12px; color: var(--text-muted); margin-top: 1px; }

.header-search-wrap {
  flex: 1;
  max-width: 420px;
  position: relative;
}

.header-search {
  width: 100%;
  height: 38px;
  background: var(--surface-2);
  border: 1.5px solid var(--border);
  border-radius: var(--r-full);
  padding: 0 var(--space-5) 0 38px;
  font-size: 13px;
  color: var(--text-primary);
  transition: border-color var(--duration), box-shadow var(--duration);
}
.header-search:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(37,99,235,0.1); }
.header-search::placeholder { color: var(--text-muted); }
.header-search-icon {
  position: absolute; left: 12px; top: 50%; transform: translateY(-50%);
  width: 16px; height: 16px; color: var(--text-muted); pointer-events: none;
}

.header-actions { display: flex; align-items: center; gap: var(--space-2); margin-left: auto; }

.icon-btn {
  width: 36px; height: 36px;
  border-radius: var(--r-md);
  display: flex; align-items: center; justify-content: center;
  color: var(--text-secondary);
  transition: all var(--duration);
  position: relative;
}
.icon-btn:hover { background: var(--border-light); color: var(--text-primary); }
.icon-btn svg { width: 18px; height: 18px; }
.icon-btn .badge {
  position: absolute; top: 4px; right: 4px;
  width: 16px; height: 16px;
  background: var(--danger);
  color: white; font-size: 9px; font-weight: 700;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  border: 2px solid white;
}

/* ─── Main Content ─────────────────────────────────────────── */
#main-content {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: var(--space-6);
  background: var(--bg);
}
#main-content::-webkit-scrollbar { width: 6px; }
#main-content::-webkit-scrollbar-thumb { background: var(--border); border-radius: 6px; }

/* ─── Cards ─────────────────────────────────────────────────── */
.card {
  background: var(--surface);
  border-radius: var(--r-lg);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.card-header {
  padding: var(--space-5) var(--space-6);
  border-bottom: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.card-title {
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}
.card-title svg { width: 16px; height: 16px; color: var(--primary); }

.card-body { padding: var(--space-5) var(--space-6); }

/* ─── Stat Cards ────────────────────────────────────────────── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  box-shadow: var(--shadow-sm);
  transition: transform var(--duration), box-shadow var(--duration);
  cursor: default;
}
.stat-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }

.stat-icon {
  width: 40px; height: 40px;
  border-radius: var(--r-md);
  display: flex; align-items: center; justify-content: center;
}
.stat-icon svg { width: 20px; height: 20px; }

.stat-value {
  font-family: var(--font-sans);
  font-size: 28px;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1;
}

.stat-label { font-size: 12px; font-weight: 500; color: var(--text-secondary); }

.stat-trend {
  font-size: 11px;
  color: var(--success);
  display: flex;
  align-items: center;
  gap: 3px;
}
.stat-trend.neg { color: var(--danger); }

/* ─── Dashboard Grid ────────────────────────────────────────── */
.dashboard-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--space-5);
  margin-bottom: var(--space-5);
}

.dashboard-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-5);
}

/* Donut Chart */
.donut-wrap {
  display: flex;
  gap: var(--space-6);
  align-items: center;
}

.donut-chart {
  position: relative;
  width: 140px; height: 140px;
  flex-shrink: 0;
}

.donut-svg { transform: rotate(-90deg); }
.donut-center {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}
.donut-center-val { font-family: var(--font-sans); font-size: 24px; font-weight: 800; color: var(--text-primary); }
.donut-center-label { font-size: 10px; color: var(--text-muted); font-weight: 500; }

.donut-legend { display: flex; flex-direction: column; gap: var(--space-2); flex: 1; }
.legend-item { display: flex; align-items: center; gap: var(--space-2); font-size: 12px; }
.legend-dot { width: 10px; height: 10px; border-radius: 50%; flex-shrink: 0; }
.legend-label { color: var(--text-secondary); flex: 1; }
.legend-val { font-weight: 600; color: var(--text-primary); }

/* Pipeline */
.pipeline-bar {
  height: 8px;
  background: var(--border-light);
  border-radius: var(--r-full);
  overflow: hidden;
  margin: var(--space-2) 0;
}
.pipeline-fill {
  height: 100%;
  border-radius: var(--r-full);
  transition: width 0.6s var(--ease);
}

/* Activity Feed */
.activity-feed { display: flex; flex-direction: column; gap: 2px; }
.activity-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--r-md);
  transition: background var(--duration);
}
.activity-item:hover { background: var(--surface-2); }

.activity-avatar {
  width: 28px; height: 28px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-sans); font-size: 10px; font-weight: 700;
  color: white; flex-shrink: 0; margin-top: 1px;
}

.activity-body { flex: 1; min-width: 0; }
.activity-text { font-size: 12px; color: var(--text-primary); line-height: 1.4; }
.activity-text strong { font-weight: 600; }
.activity-time { font-size: 11px; color: var(--text-muted); margin-top: 2px; }

/* ─── Buttons ───────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0 var(--space-4);
  height: 36px;
  border-radius: var(--r-md);
  font-size: 13px;
  font-weight: 600;
  transition: all var(--duration) var(--ease);
  white-space: nowrap;
  font-family: var(--font-sans);
  cursor: pointer;
}
.btn svg { width: 15px; height: 15px; }

.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: white;
  box-shadow: var(--shadow-red);
}
.btn-primary:hover { background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary) 100%); box-shadow: 0 6px 24px rgba(196,30,58,0.45); transform: translateY(-1px); }

.btn-secondary {
  background: var(--surface);
  color: var(--text-secondary);
  border: 1.5px solid var(--border);
}
.btn-secondary:hover { border-color: var(--primary); color: var(--primary); background: var(--primary-bg); }

.btn-success {
  background: var(--success);
  color: white;
  box-shadow: 0 2px 8px rgba(5,150,105,0.3);
}
.btn-success:hover { background: #047857; transform: translateY(-1px); }

.btn-danger {
  background: var(--danger);
  color: white;
  box-shadow: 0 2px 8px rgba(220,38,38,0.3);
}
.btn-danger:hover { background: #B91C1C; transform: translateY(-1px); }

.btn-warning {
  background: var(--warning);
  color: white;
  box-shadow: 0 2px 8px rgba(217,119,6,0.3);
}
.btn-warning:hover { background: #B45309; transform: translateY(-1px); }

.btn-ghost {
  color: var(--text-secondary);
  background: transparent;
}
.btn-ghost:hover { background: var(--border-light); color: var(--text-primary); }

.btn-sm { height: 30px; padding: 0 var(--space-3); font-size: 12px; }
.btn-lg { height: 44px; padding: 0 var(--space-6); font-size: 14px; }
.btn-icon { width: 36px; padding: 0; }
.btn-icon.btn-sm { width: 30px; }

/* ─── Badges / Status Tags ──────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  border-radius: var(--r-full);
  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: 600;
  white-space: nowrap;
}

.badge-dot { width: 6px; height: 6px; border-radius: 50%; }

/* ─── Tags ──────────────────────────────────────────────────── */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  border-radius: var(--r-full);
  font-size: 11px;
  font-weight: 500;
  background: var(--surface-2);
  color: var(--text-secondary);
  border: 1px solid var(--border);
}

/* ─── Tables ────────────────────────────────────────────────── */
.table-wrap { overflow-x: auto; }
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
.data-table th {
  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: var(--space-3) var(--space-4);
  border-bottom: 2px solid var(--border);
  text-align: left;
  white-space: nowrap;
  background: var(--surface);
  position: sticky;
  top: 0;
  z-index: 1;
}
.data-table td {
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--border-light);
  color: var(--text-primary);
  vertical-align: middle;
}
.data-table tr:last-child td { border-bottom: none; }
.data-table tbody tr {
  transition: background var(--duration);
  cursor: pointer;
}
.data-table tbody tr:hover { background: var(--surface-2); }

/* ─── Explorer ──────────────────────────────────────────────── */
.explorer-layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: var(--space-4);
  height: calc(100vh - 130px);
}

.explorer-sidebar {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  overflow-y: auto;
  box-shadow: var(--shadow-sm);
}
.explorer-sidebar::-webkit-scrollbar { width: 4px; }
.explorer-sidebar::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }

.tree-project {
  border-bottom: 1px solid var(--border-light);
  padding: var(--space-2) 0;
}

.tree-project-header {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  cursor: pointer;
  transition: background var(--duration);
  border-radius: var(--r-sm);
  margin: 0 var(--space-1);
}
.tree-project-header:hover { background: var(--surface-2); }

.tree-project-dot { width: 10px; height: 10px; border-radius: 50%; flex-shrink: 0; }
.tree-project-name { font-family: var(--font-sans); font-size: 12px; font-weight: 700; color: var(--text-primary); flex: 1; }
.tree-project-chevron { width: 14px; height: 14px; color: var(--text-muted); transition: transform var(--duration); }
.tree-project.open .tree-project-chevron { transform: rotate(90deg); }

.tree-folders { display: none; }
.tree-project.open .tree-folders { display: block; }

.tree-folder {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4) var(--space-2) var(--space-8);
  font-size: 12px;
  color: var(--text-secondary);
  cursor: pointer;
  border-radius: var(--r-sm);
  margin: 0 var(--space-1);
  transition: all var(--duration);
}
.tree-folder:hover { background: var(--primary-bg); color: var(--primary); }
.tree-folder.active { background: var(--primary-bg); color: var(--primary); font-weight: 600; }
.tree-folder-icon { width: 14px; height: 14px; color: var(--accent); flex-shrink: 0; }
.tree-folder-count {
  margin-left: auto;
  font-size: 10px;
  font-weight: 600;
  color: var(--text-muted);
  background: var(--border-light);
  padding: 1px 5px;
  border-radius: var(--r-full);
}

.explorer-main { display: flex; flex-direction: column; gap: var(--space-4); overflow: hidden; }

.explorer-toolbar {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: var(--space-3) var(--space-5);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  box-shadow: var(--shadow-sm);
  flex-shrink: 0;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  flex: 1;
  font-size: 12px;
  color: var(--text-muted);
  overflow: hidden;
}
.breadcrumb-item { cursor: pointer; white-space: nowrap; transition: color var(--duration); }
.breadcrumb-item:hover { color: var(--primary); }
.breadcrumb-sep { color: var(--border); }
.breadcrumb-item.current { color: var(--text-primary); font-weight: 600; cursor: default; }

.view-toggle {
  display: flex;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  overflow: hidden;
}
.view-toggle-btn {
  padding: var(--space-2) var(--space-3);
  color: var(--text-muted);
  transition: all var(--duration);
  display: flex; align-items: center;
}
.view-toggle-btn svg { width: 15px; height: 15px; }
.view-toggle-btn.active { background: var(--primary); color: white; }

.files-area {
  flex: 1;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  overflow-y: auto;
  box-shadow: var(--shadow-sm);
  position: relative;
}
.files-area::-webkit-scrollbar { width: 6px; }
.files-area::-webkit-scrollbar-thumb { background: var(--border); border-radius: 6px; }

/* Drop zone highlight */
.files-area.drag-over { border-color: var(--primary); background: var(--primary-bg); }
.drag-hint {
  position: absolute; inset: 0;
  display: none;
  align-items: center; justify-content: center;
  flex-direction: column;
  gap: var(--space-3);
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  pointer-events: none;
}
.drag-hint svg { width: 40px; height: 40px; opacity: 0.5; }
.files-area.drag-over .drag-hint { display: flex; }

/* Document Grid */
.doc-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: var(--space-4);
  padding: var(--space-5);
}

.doc-card {
  border: 1.5px solid var(--border);
  border-radius: var(--r-lg);
  overflow: hidden;
  cursor: pointer;
  transition: all var(--duration) var(--ease);
  background: var(--surface);
  position: relative;
}
.doc-card:hover { border-color: var(--primary); box-shadow: var(--shadow-md); transform: translateY(-2px); }
.doc-card.selected { border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-bg); }

.doc-card-top {
  height: 90px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  padding: var(--space-4);
}

.doc-type-icon {
  width: 52px; height: 52px;
  border-radius: var(--r-md);
  display: flex; align-items: center; justify-content: center;
}
.doc-type-icon svg { width: 26px; height: 26px; }

.doc-rev-badge {
  position: absolute;
  top: var(--space-2); right: var(--space-2);
  font-family: var(--font-sans);
  font-size: 9px; font-weight: 700;
  color: var(--text-muted);
  background: var(--surface-2);
  border: 1px solid var(--border);
  padding: 1px 5px;
  border-radius: var(--r-full);
}

.doc-card-body { padding: var(--space-3) var(--space-4) var(--space-4); }
.doc-card-num { font-family: var(--font-sans); font-size: 10px; font-weight: 600; color: var(--text-muted); margin-bottom: 3px; }
.doc-card-title { font-size: 12px; font-weight: 600; color: var(--text-primary); line-height: 1.3; margin-bottom: var(--space-3); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

/* Doc List */
.doc-list { padding: var(--space-2); }
.doc-list-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--r-md);
  cursor: pointer;
  transition: background var(--duration);
  border: 1px solid transparent;
}
.doc-list-item:hover { background: var(--surface-2); border-color: var(--border); }
.doc-list-item.selected { background: var(--primary-bg); border-color: var(--primary); }

.doc-list-icon { width: 36px; height: 36px; border-radius: var(--r-sm); display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.doc-list-icon svg { width: 18px; height: 18px; }

.doc-list-info { flex: 1; min-width: 0; }
.doc-list-num { font-size: 10px; font-weight: 600; color: var(--text-muted); }
.doc-list-title { font-size: 13px; font-weight: 500; color: var(--text-primary); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

.doc-list-meta { display: flex; align-items: center; gap: var(--space-3); flex-shrink: 0; }

/* ─── Document Viewer Panel ─────────────────────────────────── */
.viewer-overlay {
  position: fixed; inset: 0; background: rgba(15,23,42,0.5);
  display: flex; align-items: stretch; justify-content: flex-end;
  z-index: 200;
  animation: fadeIn var(--duration) var(--ease);
}
.viewer-panel {
  width: 620px;
  background: var(--surface);
  box-shadow: var(--shadow-xl);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  animation: slideInRight 0.3s var(--ease);
}

@keyframes slideInRight { from { transform: translateX(100%); } to { transform: translateX(0); } }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes slideUp { from { transform: translateY(20px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: 0.5; } }
@keyframes spin { to { transform: rotate(360deg); } }

.viewer-header {
  padding: var(--space-5) var(--space-6);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  flex-shrink: 0;
}
.viewer-doc-icon { width: 48px; height: 48px; border-radius: var(--r-md); display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.viewer-doc-icon svg { width: 24px; height: 24px; }
.viewer-doc-info { flex: 1; min-width: 0; }
.viewer-doc-num { font-family: var(--font-sans); font-size: 11px; font-weight: 600; color: var(--text-muted); margin-bottom: 3px; }
.viewer-doc-title { font-family: var(--font-sans); font-size: 15px; font-weight: 700; color: var(--text-primary); line-height: 1.3; margin-bottom: var(--space-2); }
.viewer-doc-meta { display: flex; align-items: center; gap: var(--space-3); flex-wrap: wrap; }
.viewer-close { flex-shrink: 0; }

.viewer-tabs {
  display: flex;
  border-bottom: 1px solid var(--border);
  padding: 0 var(--space-6);
  background: var(--surface);
  flex-shrink: 0;
}
.viewer-tab {
  padding: var(--space-3) var(--space-4);
  font-size: 13px;
  font-weight: 500;
  color: var(--text-muted);
  border-bottom: 2px solid transparent;
  cursor: pointer;
  transition: all var(--duration);
  white-space: nowrap;
}
.viewer-tab.active { color: var(--primary); border-bottom-color: var(--primary); font-weight: 600; }
.viewer-tab:hover:not(.active) { color: var(--text-secondary); }

.viewer-body { flex: 1; overflow-y: auto; }
.viewer-body::-webkit-scrollbar { width: 6px; }
.viewer-body::-webkit-scrollbar-thumb { background: var(--border); border-radius: 6px; }

.viewer-content-pane { padding: var(--space-6); display: none; }
.viewer-content-pane.active { display: block; animation: slideUp 0.2s var(--ease); }

.preview-text {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  padding: var(--space-5);
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-secondary);
  max-height: 300px;
  overflow-y: auto;
  white-space: pre-wrap;
  word-break: break-word;
}

.meta-grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-4); }
.meta-item { display: flex; flex-direction: column; gap: 4px; }
.meta-label { font-family: var(--font-sans); font-size: 10px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.06em; color: var(--text-muted); }
.meta-value { font-size: 13px; font-weight: 500; color: var(--text-primary); }

.section-title { font-family: var(--font-sans); font-size: 12px; font-weight: 700; color: var(--text-secondary); text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: var(--space-3); margin-top: var(--space-5); }

/* Workflow Timeline */
.workflow-timeline { display: flex; flex-direction: column; gap: 0; }
.workflow-step {
  display: flex;
  gap: var(--space-4);
  position: relative;
}
.workflow-step:not(:last-child)::before {
  content: '';
  position: absolute;
  left: 16px;
  top: 40px;
  bottom: 0;
  width: 2px;
  background: var(--border);
}
.workflow-step-icon {
  width: 32px; height: 32px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  border: 2px solid var(--border);
  background: var(--surface);
  z-index: 1;
}
.workflow-step-icon svg { width: 14px; height: 14px; }
.workflow-step-icon.done { background: var(--success); border-color: var(--success); color: white; }
.workflow-step-icon.active { background: var(--warning); border-color: var(--warning); color: white; animation: pulse 2s infinite; }
.workflow-step-icon.pending { color: var(--text-muted); }

.workflow-step-body { flex: 1; padding-bottom: var(--space-5); }
.workflow-step-name { font-size: 13px; font-weight: 600; color: var(--text-primary); }
.workflow-step-user { font-size: 12px; color: var(--text-secondary); }
.workflow-step-date { font-size: 11px; color: var(--text-muted); }

/* Version History */
.version-list { display: flex; flex-direction: column; gap: var(--space-2); }
.version-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  background: var(--surface-2);
}
.version-rev { font-family: var(--font-sans); font-size: 12px; font-weight: 700; color: var(--primary); background: var(--primary-bg); padding: 2px 8px; border-radius: var(--r-full); }
.version-info { flex: 1; }
.version-info-title { font-size: 12px; font-weight: 500; color: var(--text-primary); }
.version-info-meta { font-size: 11px; color: var(--text-muted); }

/* Comments */
.comment-list { display: flex; flex-direction: column; gap: var(--space-3); }
.comment-item { display: flex; gap: var(--space-3); }
.comment-body { flex: 1; background: var(--surface-2); border-radius: var(--r-md); padding: var(--space-3); }
.comment-header { display: flex; justify-content: space-between; margin-bottom: var(--space-1); }
.comment-author { font-size: 12px; font-weight: 600; color: var(--text-primary); }
.comment-time { font-size: 11px; color: var(--text-muted); }
.comment-text { font-size: 13px; color: var(--text-secondary); line-height: 1.5; }

.comment-input-wrap { display: flex; gap: var(--space-3); margin-top: var(--space-4); }
.comment-input {
  flex: 1;
  border: 1.5px solid var(--border);
  border-radius: var(--r-md);
  padding: var(--space-3);
  font-size: 13px;
  resize: none;
  height: 72px;
  transition: border-color var(--duration);
}
.comment-input:focus { border-color: var(--primary); }

/* ─── Workflow Actions Panel ─────────────────────────────────── */
.workflow-actions {
  background: linear-gradient(135deg, #F0F9FF 0%, #EFF6FF 100%);
  border: 1px solid #BAE6FD;
  border-radius: var(--r-lg);
  padding: var(--space-5);
  margin-bottom: var(--space-5);
  animation: slideUp 0.3s var(--ease);
}
.workflow-actions-title { font-family: var(--font-sans); font-size: 13px; font-weight: 700; color: var(--text-primary); margin-bottom: var(--space-4); display: flex; align-items: center; gap: var(--space-2); }
.workflow-actions-title svg { width: 16px; height: 16px; color: var(--primary); }
.workflow-btns { display: flex; gap: var(--space-3); flex-wrap: wrap; }

/* ─── Search ────────────────────────────────────────────────── */
.search-view { display: flex; flex-direction: column; gap: var(--space-5); }

.search-hero {
  background: linear-gradient(135deg, var(--primary) 0%, #1E40AF 100%);
  border-radius: var(--r-xl);
  padding: var(--space-10) var(--space-8);
  color: white;
  text-align: center;
}
.search-hero h2 { font-family: var(--font-sans); font-size: 24px; font-weight: 800; margin-bottom: var(--space-2); }
.search-hero p { opacity: 0.8; font-size: 14px; margin-bottom: var(--space-6); }

.search-big-input {
  width: 100%;
  max-width: 540px;
  height: 52px;
  border-radius: var(--r-full);
  border: none;
  padding: 0 var(--space-6) 0 52px;
  font-size: 15px;
  color: var(--text-primary);
  box-shadow: var(--shadow-lg);
  font-family: var(--font-body);
}
.search-big-input:focus { outline: none; box-shadow: var(--shadow-xl); }

.search-big-wrap { position: relative; display: flex; justify-content: center; }
.search-big-icon { position: absolute; left: calc(50% - 270px + 18px); top: 50%; transform: translateY(-50%); width: 20px; height: 20px; color: var(--text-muted); pointer-events: none; }

.filter-bar {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: var(--space-4) var(--space-5);
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
  box-shadow: var(--shadow-sm);
}
.filter-label { font-family: var(--font-sans); font-size: 12px; font-weight: 600; color: var(--text-secondary); white-space: nowrap; }
.filter-select {
  height: 34px;
  border: 1.5px solid var(--border);
  border-radius: var(--r-md);
  padding: 0 var(--space-3);
  font-size: 12px;
  color: var(--text-primary);
  background: var(--surface);
  cursor: pointer;
  transition: border-color var(--duration);
  font-family: var(--font-body);
}
.filter-select:focus { border-color: var(--primary); }

.search-results-count { font-family: var(--font-sans); font-size: 13px; color: var(--text-secondary); }
.search-results-count strong { color: var(--primary); }

/* ─── Audit Log ─────────────────────────────────────────────── */
.action-badge { display: inline-flex; align-items: center; gap: 4px; padding: 3px 8px; border-radius: var(--r-full); font-size: 11px; font-weight: 600; font-family: var(--font-sans); }

/* ─── Users Page ────────────────────────────────────────────── */
.users-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: var(--space-4); }
.user-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: var(--space-5);
  box-shadow: var(--shadow-sm);
  transition: all var(--duration);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}
.user-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
}
.user-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.user-card.active-user { border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-bg); }

.user-card-header { display: flex; align-items: center; gap: var(--space-4); margin-bottom: var(--space-4); }
.user-avatar-lg {
  width: 52px; height: 52px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-sans); font-size: 16px; font-weight: 800;
  color: white;
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}
.user-name { font-family: var(--font-sans); font-size: 15px; font-weight: 700; color: var(--text-primary); }
.user-email { font-size: 12px; color: var(--text-muted); }
.user-role-badge { display: inline-flex; align-items: center; padding: 3px 10px; border-radius: var(--r-full); font-family: var(--font-sans); font-size: 11px; font-weight: 700; color: white; }

.permissions-list { display: flex; flex-direction: column; gap: var(--space-2); }
.perm-item { display: flex; align-items: center; gap: var(--space-2); font-size: 12px; color: var(--text-secondary); }
.perm-item svg { width: 14px; height: 14px; }
.perm-item.granted { color: var(--success); }
.perm-item.denied { color: var(--danger); }

/* ─── AI Chat ───────────────────────────────────────────────── */
.ai-panel {
  position: fixed;
  right: 0; top: 0; bottom: 0;
  width: 380px;
  background: var(--surface);
  box-shadow: var(--shadow-xl);
  display: flex;
  flex-direction: column;
  z-index: 300;
  transform: translateX(100%);
  transition: transform 0.35s var(--ease);
}
.ai-panel.open { transform: translateX(0); }

.ai-header {
  padding: var(--space-5) var(--space-5);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  background: linear-gradient(135deg, var(--primary) 0%, #1E40AF 100%);
  color: white;
  flex-shrink: 0;
}
.ai-avatar {
  width: 36px; height: 36px;
  background: rgba(255,255,255,0.2);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
}
.ai-avatar svg { width: 18px; height: 18px; }
.ai-title { flex: 1; }
.ai-title h3 { font-family: var(--font-sans); font-size: 14px; font-weight: 700; }
.ai-title span { font-size: 11px; opacity: 0.8; }

.ai-messages { flex: 1; overflow-y: auto; padding: var(--space-4); display: flex; flex-direction: column; gap: var(--space-3); }
.ai-messages::-webkit-scrollbar { width: 4px; }
.ai-messages::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }

.msg-bubble {
  max-width: 85%;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--r-lg);
  font-size: 13px;
  line-height: 1.5;
  animation: slideUp 0.2s var(--ease);
}
.msg-bubble.user { background: var(--primary); color: white; align-self: flex-end; border-bottom-right-radius: var(--r-sm); }
.msg-bubble.ai { background: var(--surface-2); color: var(--text-primary); align-self: flex-start; border: 1px solid var(--border); border-bottom-left-radius: var(--r-sm); }
.msg-bubble.ai strong { font-weight: 600; color: var(--primary); }

.ai-suggestions { padding: var(--space-3) var(--space-4); border-top: 1px solid var(--border); display: flex; gap: var(--space-2); overflow-x: auto; flex-shrink: 0; }
.ai-suggestions::-webkit-scrollbar { display: none; }
.suggestion-chip {
  padding: var(--space-2) var(--space-3);
  background: var(--primary-bg);
  color: var(--primary);
  border: 1px solid #BFDBFE;
  border-radius: var(--r-full);
  font-size: 11px;
  font-weight: 500;
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--duration);
}
.suggestion-chip:hover { background: var(--primary); color: white; }

.ai-input-wrap {
  padding: var(--space-4);
  border-top: 1px solid var(--border);
  display: flex;
  gap: var(--space-3);
  flex-shrink: 0;
}
.ai-input {
  flex: 1;
  border: 1.5px solid var(--border);
  border-radius: var(--r-lg);
  padding: var(--space-3) var(--space-4);
  font-size: 13px;
  font-family: var(--font-body);
  resize: none;
  height: 52px;
  transition: border-color var(--duration);
}
.ai-input:focus { border-color: var(--primary); }

/* ─── Notification Panel ────────────────────────────────────── */
.notif-panel {
  position: fixed;
  right: var(--space-4); top: 68px;
  width: 360px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-xl);
  box-shadow: var(--shadow-xl);
  z-index: 250;
  display: none;
  overflow: hidden;
  animation: slideUp 0.2s var(--ease);
}
.notif-panel.open { display: block; }

.notif-header {
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.notif-title { font-family: var(--font-sans); font-size: 14px; font-weight: 700; }

.notif-list { max-height: 400px; overflow-y: auto; }
.notif-list::-webkit-scrollbar { width: 4px; }
.notif-list::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }

.notif-item {
  display: flex;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--border-light);
  cursor: pointer;
  transition: background var(--duration);
}
.notif-item:hover { background: var(--surface-2); }
.notif-item.unread { background: #F0F7FF; }

.notif-icon {
  width: 36px; height: 36px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.notif-icon svg { width: 16px; height: 16px; }

.notif-body { flex: 1; min-width: 0; }
.notif-msg { font-size: 12px; color: var(--text-primary); line-height: 1.4; }
.notif-time { font-size: 11px; color: var(--text-muted); margin-top: 2px; }
.notif-unread-dot { width: 8px; height: 8px; background: var(--primary); border-radius: 50%; flex-shrink: 0; margin-top: 4px; }

/* ─── Modal ─────────────────────────────────────────────────── */
.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(15,23,42,0.5);
  display: flex; align-items: center; justify-content: center;
  z-index: 400;
  animation: fadeIn var(--duration) var(--ease);
}
.modal {
  background: var(--surface);
  border-radius: var(--r-xl);
  box-shadow: var(--shadow-xl);
  width: 100%;
  max-width: 480px;
  overflow: hidden;
  animation: slideUp 0.25s var(--ease);
}
.modal-header {
  padding: var(--space-6);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.modal-title { font-family: var(--font-sans); font-size: 16px; font-weight: 700; }
.modal-body { padding: var(--space-6); display: flex; flex-direction: column; gap: var(--space-4); }
.modal-footer { padding: var(--space-4) var(--space-6); border-top: 1px solid var(--border); display: flex; justify-content: flex-end; gap: var(--space-3); }

/* ─── Form Elements ─────────────────────────────────────────── */
.form-group { display: flex; flex-direction: column; gap: var(--space-2); }
.form-label { font-family: var(--font-sans); font-size: 12px; font-weight: 600; color: var(--text-secondary); }
.form-input, .form-select, .form-textarea {
  height: 38px;
  border: 1.5px solid var(--border);
  border-radius: var(--r-md);
  padding: 0 var(--space-3);
  font-size: 13px;
  color: var(--text-primary);
  background: var(--surface);
  transition: border-color var(--duration), box-shadow var(--duration);
  font-family: var(--font-body);
  width: 100%;
}
.form-textarea { height: 80px; padding: var(--space-3); resize: vertical; }
.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37,99,235,0.1);
}

/* ─── Empty State ───────────────────────────────────────────── */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-12) var(--space-6);
  text-align: center;
}
.empty-icon { width: 64px; height: 64px; color: var(--text-muted); opacity: 0.4; margin-bottom: var(--space-4); }
.empty-title { font-family: var(--font-sans); font-size: 16px; font-weight: 700; color: var(--text-secondary); margin-bottom: var(--space-2); }
.empty-desc { font-size: 13px; color: var(--text-muted); max-width: 280px; }

/* ─── Tooltips ──────────────────────────────────────────────── */
[data-tooltip] { position: relative; }
[data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--text-primary);
  color: white;
  padding: 4px 8px;
  border-radius: var(--r-sm);
  font-size: 11px;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration);
  z-index: 500;
}
[data-tooltip]:hover::after { opacity: 1; }

/* ─── Context Menu ───────────────────────────────────────────── */
.context-menu {
  position: fixed;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-xl);
  min-width: 180px;
  z-index: 600;
  overflow: hidden;
  animation: slideUp 0.15s var(--ease);
}
.context-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  font-size: 13px;
  color: var(--text-primary);
  cursor: pointer;
  transition: background var(--duration);
}
.context-item:hover { background: var(--surface-2); }
.context-item.danger { color: var(--danger); }
.context-item.danger:hover { background: var(--danger-bg); }
.context-item svg { width: 15px; height: 15px; color: var(--text-muted); }
.context-item.danger svg { color: var(--danger); }
.context-sep { height: 1px; background: var(--border); margin: 4px 0; }

/* ─── Project Completion ────────────────────────────────────── */
.project-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: var(--space-5);
  box-shadow: var(--shadow-sm);
}
.project-card-header { display: flex; align-items: center; gap: var(--space-3); margin-bottom: var(--space-4); }
.project-code { font-family: var(--font-sans); font-size: 11px; font-weight: 700; padding: 2px 8px; border-radius: var(--r-sm); color: white; }
.project-name-text { font-family: var(--font-sans); font-size: 14px; font-weight: 700; }
.project-pct { font-family: var(--font-sans); font-size: 20px; font-weight: 800; margin-left: auto; }

/* ─── Loader ────────────────────────────────────────────────── */
.spinner {
  width: 20px; height: 20px;
  border: 2px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

/* ─── Utility ───────────────────────────────────────────────── */
.flex { display: flex; }
.flex-col { display: flex; flex-direction: column; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.justify-between { justify-content: space-between; }
.justify-end { justify-content: flex-end; }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.flex-1 { flex: 1; }
.w-full { width: 100%; }
.text-right { text-align: right; }
.text-center { text-align: center; }
.text-sm { font-size: 12px; }
.text-xs { font-size: 11px; }
.text-muted { color: var(--text-muted); }
.text-secondary { color: var(--text-secondary); }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; font-family: var(--font-sans); }
.mt-2 { margin-top: var(--space-2); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.p-4 { padding: var(--space-4); }
.p-6 { padding: var(--space-6); }
.hidden { display: none !important; }

/* ─── Responsive ────────────────────────────────────────────── */
@media (max-width: 900px) {
  #sidebar { width: 64px; min-width: 64px; }
  #sidebar .sidebar-brand, #sidebar .nav-label, #sidebar .nav-badge,
  #sidebar .user-info, #sidebar .project-name, #sidebar .nav-section-label { opacity: 0; width: 0; overflow: hidden; }
  .explorer-layout { grid-template-columns: 1fr; }
  .explorer-sidebar { display: none; }
  .dashboard-grid { grid-template-columns: 1fr; }
  .dashboard-grid-3 { grid-template-columns: 1fr 1fr; }
  .viewer-panel { width: 100%; }
}
@media (max-width: 600px) {
  #main-content { padding: var(--space-4); }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .dashboard-grid-3 { grid-template-columns: 1fr; }
  .meta-grid { grid-template-columns: 1fr; }
}

/* ─── Print ─────────────────────────────────────────────────── */
@media print {
  #sidebar, #header, .ai-panel, .notif-panel { display: none !important; }
  #main-content { padding: 0; overflow: visible; }
}

/* ─── Dark Theme Tokens ─────────────────────────────────────── */
html[data-theme="dark"], body[data-theme="dark"] {
  --bg:            #0F172A;
  --surface:       #1E293B;
  --surface-2:     #334155;
  --border:        #475569;
  --border-light:  #334155;
  --text-primary:  #F8FAFC;
  --text-secondary:#CBD5E1;
  --text-muted:    #64748B;
  --sidebar-bg:    #020617;
}

[data-theme="dark"] .card, 
[data-theme="dark"] .stat-card, 
[data-theme="dark"] .user-card, 
[data-theme="dark"] .notif-panel, 
[data-theme="dark"] .modal,
[data-theme="dark"] .explorer-sidebar,
[data-theme="dark"] .viewer-panel {
  background: #1E293B !important;
  color: #F8FAFC !important;
  border-color: #334155 !important;
}

[data-theme="dark"] .data-table th,
[data-theme="dark"] .form-input,
[data-theme="dark"] .form-select,
[data-theme="dark"] .form-textarea,
[data-theme="dark"] .comment-input,
[data-theme="dark"] .comment-input-wrap,
[data-theme="dark"] .explorer-toolbar {
  background: #0F172A !important;
  color: #F8FAFC !important;
  border-color: #334155 !important;
}

[data-theme="dark"] .data-table tr:hover {
  background: #334155 !important;
}

[data-theme="dark"] #header, 
[data-theme="dark"] .header-search {
  background: #1E293B !important;
  color: #F8FAFC !important;
  border-color: #334155 !important;
}

[data-theme="dark"] .brand-accent {
  color: #60A5FA !important;
}