/* ============================================================
   CONSTRUGEST - Estilos principales
   Aesthetic: Industrial Precision — dark sidebar, amber accents
   ============================================================ */

:root {
  --bg:          #0f1117;
  --bg-card:     #171b24;
  --bg-input:    #1e2330;
  --sidebar-bg:  #0a0d14;
  --sidebar-w:   260px;
  --topbar-h:    60px;

  --accent:      #f59e0b;
  --accent-dark: #d97706;
  --accent-glow: rgba(245,158,11,0.15);
  --success:     #10b981;
  --danger:      #ef4444;
  --warning:     #f59e0b;
  --info:        #3b82f6;

  --text-primary:   #e8ecf3;
  --text-secondary: #8892a4;
  --text-muted:     #4a5568;
  --border:         #242938;
  --border-light:   #2d3447;

  --font-sans: 'IBM Plex Sans', system-ui, sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;

  --radius:   6px;
  --radius-lg:12px;
  --shadow:   0 4px 20px rgba(0,0,0,0.4);
  --shadow-sm:0 2px 8px rgba(0,0,0,0.3);

  --transition: 200ms ease;
}

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

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text-primary);
  font-size: 14px;
  line-height: 1.5;
  display: flex;
  min-height: 100vh;
  overflow-x: hidden;
}

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

.sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  height: var(--topbar-h);
  border-bottom: 1px solid var(--border);
}

.logo { display: flex; align-items: center; gap: 10px; }

.logo-icon {
  width: 32px; height: 32px;
  background: var(--accent);
  border-radius: 6px;
  display: flex; align-items: center; justify-content: center;
  color: #000;
  font-size: 16px;
}

.logo-text {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.5px;
  color: var(--text-primary);
}

.sidebar-toggle {
  background: none; border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 6px;
  border-radius: 4px;
  font-size: 14px;
  display: none;
}

.sidebar-menu {
  flex: 1;
  overflow-y: auto;
  padding: 12px 0;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}

.menu-section { padding: 12px 0 4px; }

.menu-label {
  display: block;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  color: var(--text-muted);
  padding: 0 20px;
  margin-bottom: 4px;
}

.menu-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 20px;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 13.5px;
  transition: all var(--transition);
  border-left: 3px solid transparent;
  margin: 1px 0;
}

.menu-item:hover {
  color: var(--text-primary);
  background: rgba(255,255,255,0.04);
}

.menu-item.active {
  color: var(--accent);
  background: var(--accent-glow);
  border-left-color: var(--accent);
}

.menu-item i { width: 18px; font-size: 14px; flex-shrink: 0; }

.sidebar-footer {
  padding: 12px 16px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 10px;
}

.user-info { display: flex; align-items: center; gap: 10px; flex: 1; overflow: hidden; }

.user-avatar {
  width: 34px; height: 34px;
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 14px; color: #000;
  flex-shrink: 0;
}

.user-details { overflow: hidden; }
.user-name { display: block; font-size: 13px; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.user-role { display: block; font-size: 11px; color: var(--text-muted); text-transform: capitalize; }

.btn-logout {
  color: var(--text-muted); text-decoration: none;
  padding: 6px; border-radius: 4px;
  transition: color var(--transition);
}
.btn-logout:hover { color: var(--danger); }

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

/* ============================================================
   TOPBAR
   ============================================================ */
.topbar {
  height: var(--topbar-h);
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  position: sticky; top: 0;
  z-index: 50;
}

.topbar-left { display: flex; align-items: center; gap: 16px; }
.topbar-right { display: flex; align-items: center; gap: 12px; }

.breadcrumb {
  display: flex; align-items: center; gap: 6px;
  font-size: 13px; color: var(--text-secondary);
}

.breadcrumb a { color: var(--text-secondary); text-decoration: none; }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb .current { color: var(--text-primary); }
.breadcrumb span { color: var(--text-muted); }

.topbar-search {
  display: flex; align-items: center; gap: 8px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 6px 12px;
  font-size: 13px;
}

.topbar-search i { color: var(--text-muted); font-size: 12px; }
.topbar-search input { background: none; border: none; outline: none; color: var(--text-primary); width: 200px; }
.topbar-search input::placeholder { color: var(--text-muted); }

.btn-icon {
  background: none; border: none;
  color: var(--text-secondary);
  cursor: pointer; padding: 8px;
  border-radius: 6px; font-size: 15px;
  transition: all var(--transition);
  position: relative;
}
.btn-icon:hover { background: var(--bg-input); color: var(--text-primary); }

.notif-btn .badge {
  position: absolute; top: 2px; right: 2px;
  background: var(--danger); color: #fff;
  font-size: 9px; font-weight: 700;
  width: 16px; height: 16px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
}

.user-menu-sm { display: flex; align-items: center; gap: 8px; font-size: 13px; font-weight: 500; }
.user-avatar-sm {
  width: 30px; height: 30px;
  background: var(--accent);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 12px; color: #000;
}

/* ============================================================
   PAGE CONTENT
   ============================================================ */
.page-content { padding: 24px; flex: 1; }

.page-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 24px;
}

.page-title { font-size: 22px; font-weight: 700; }
.page-subtitle { font-size: 13px; color: var(--text-secondary); margin-top: 2px; }

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

.card-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
}

.card-title { font-size: 15px; font-weight: 600; }
.card-body { padding: 20px; }
.card-footer { padding: 14px 20px; border-top: 1px solid var(--border); background: rgba(0,0,0,0.1); }

/* ============================================================
   STATS CARDS
   ============================================================ */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  display: flex; align-items: center; gap: 16px;
  position: relative; overflow: hidden;
}

.stat-card::before {
  content: '';
  position: absolute; top: 0; left: 0;
  width: 3px; height: 100%;
}

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

.stat-icon {
  width: 48px; height: 48px;
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 20px; flex-shrink: 0;
}

.stat-card.amber .stat-icon { background: var(--accent-glow); color: var(--accent); }
.stat-card.green .stat-icon { background: rgba(16,185,129,0.12); color: var(--success); }
.stat-card.red .stat-icon { background: rgba(239,68,68,0.12); color: var(--danger); }
.stat-card.blue .stat-icon { background: rgba(59,130,246,0.12); color: var(--info); }

.stat-info { flex: 1; }
.stat-value { font-size: 24px; font-weight: 700; font-family: var(--font-mono); }
.stat-label { font-size: 12px; color: var(--text-secondary); margin-top: 2px; }

/* ============================================================
   TABLA
   ============================================================ */
.table-container { overflow-x: auto; }

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

thead th {
  background: rgba(0,0,0,0.2);
  padding: 10px 14px;
  text-align: left;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.8px;
  text-transform: uppercase;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

tbody td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--border);
  font-size: 13.5px;
  vertical-align: middle;
}

tbody tr:hover { background: rgba(255,255,255,0.02); }
tbody tr:last-child td { border-bottom: none; }

/* ============================================================
   FORMULARIOS
   ============================================================ */
.form-grid { display: grid; gap: 16px; }
.form-grid-2 { grid-template-columns: 1fr 1fr; }
.form-grid-3 { grid-template-columns: 1fr 1fr 1fr; }
.form-grid-4 { grid-template-columns: 1fr 1fr 1fr 1fr; }

.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group.col-span-2 { grid-column: span 2; }
.form-group.col-span-3 { grid-column: span 3; }

label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
  letter-spacing: 0.3px;
}

input, select, textarea {
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 9px 12px;
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 14px;
  transition: border-color var(--transition), box-shadow var(--transition);
  width: 100%;
}

input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

input::placeholder, textarea::placeholder { color: var(--text-muted); }

select option { background: var(--bg-card); }

textarea { resize: vertical; min-height: 80px; }

.form-help { font-size: 11px; color: var(--text-muted); }
.form-error { font-size: 11px; color: var(--danger); }

/* ============================================================
   BOTONES
   ============================================================ */
.btn {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 8px 16px;
  border: none; border-radius: var(--radius);
  font-family: var(--font-sans);
  font-size: 13px; font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn-primary { background: var(--accent); color: #000; }
.btn-primary:hover { background: var(--accent-dark); }

.btn-secondary { background: var(--bg-input); color: var(--text-primary); border: 1px solid var(--border); }
.btn-secondary:hover { border-color: var(--text-secondary); }

.btn-success { background: var(--success); color: #fff; }
.btn-success:hover { filter: brightness(0.9); }

.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { filter: brightness(0.9); }

.btn-ghost { background: none; color: var(--text-secondary); }
.btn-ghost:hover { background: var(--bg-input); color: var(--text-primary); }

.btn-sm { padding: 5px 10px; font-size: 12px; }
.btn-lg { padding: 12px 24px; font-size: 15px; }

.btn-group { display: flex; gap: 8px; align-items: center; }

/* ============================================================
   BADGES / ESTADOS
   ============================================================ */
.badge {
  display: inline-flex; align-items: center;
  padding: 3px 8px;
  border-radius: 20px;
  font-size: 11px; font-weight: 600;
  letter-spacing: 0.3px;
}

.badge-success { background: rgba(16,185,129,0.15); color: var(--success); }
.badge-warning { background: rgba(245,158,11,0.15); color: var(--warning); }
.badge-danger  { background: rgba(239,68,68,0.15); color: var(--danger); }
.badge-info    { background: rgba(59,130,246,0.15); color: var(--info); }
.badge-muted   { background: rgba(255,255,255,0.06); color: var(--text-secondary); }

/* ============================================================
   ALERTAS
   ============================================================ */
.alert {
  display: flex; align-items: center; gap: 10px;
  padding: 12px 16px;
  border-radius: var(--radius);
  margin-bottom: 20px;
  font-size: 14px;
  position: relative;
}

.alert-close {
  background: none; border: none; cursor: pointer;
  margin-left: auto; opacity: 0.6; font-size: 12px;
}
.alert-close:hover { opacity: 1; }

.alert-success { background: rgba(16,185,129,0.1); border: 1px solid rgba(16,185,129,0.3); color: #6ee7b7; }
.alert-error   { background: rgba(239,68,68,0.1);  border: 1px solid rgba(239,68,68,0.3);  color: #fca5a5; }
.alert-warning { background: rgba(245,158,11,0.1); border: 1px solid rgba(245,158,11,0.3); color: #fcd34d; }
.alert-info    { background: rgba(59,130,246,0.1); border: 1px solid rgba(59,130,246,0.3); color: #93c5fd; }

/* ============================================================
   MODALES
   ============================================================ */
.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.7);
  display: none; align-items: center; justify-content: center;
  z-index: 1000; padding: 20px;
}
.modal-overlay.active { display: flex; }

.modal {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  width: 100%; max-width: 600px;
  max-height: 90vh; overflow-y: auto;
  box-shadow: var(--shadow);
  animation: modalIn 0.2s ease;
}

.modal-lg { max-width: 900px; }
.modal-xl { max-width: 1200px; }

@keyframes modalIn {
  from { opacity: 0; transform: translateY(-20px) scale(0.97); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

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

.modal-title { font-size: 16px; font-weight: 700; }
.modal-close { background: none; border: none; color: var(--text-muted); cursor: pointer; font-size: 18px; }
.modal-close:hover { color: var(--text-primary); }
.modal-body { padding: 24px; }
.modal-footer { padding: 16px 24px; border-top: 1px solid var(--border); display: flex; justify-content: flex-end; gap: 10px; }

/* ============================================================
   TABS
   ============================================================ */
.tabs { border-bottom: 1px solid var(--border); margin-bottom: 24px; display: flex; gap: 0; }

.tab-btn {
  padding: 10px 18px;
  background: none; border: none;
  border-bottom: 2px solid transparent;
  color: var(--text-secondary);
  font-family: var(--font-sans);
  font-size: 13.5px; font-weight: 500;
  cursor: pointer;
  margin-bottom: -1px;
  transition: all var(--transition);
  display: flex; align-items: center; gap: 7px;
}

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

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

/* ============================================================
   PROGRESS
   ============================================================ */
.progress-bar {
  height: 6px; background: var(--bg-input);
  border-radius: 3px; overflow: hidden;
}

.progress-fill {
  height: 100%;
  border-radius: 3px;
  background: var(--accent);
  transition: width 0.5s ease;
}

/* ============================================================
   GANTT / TIMELINE básico
   ============================================================ */
.timeline { position: relative; padding-left: 24px; }
.timeline::before {
  content: '';
  position: absolute; left: 7px; top: 0; bottom: 0;
  width: 2px; background: var(--border);
}

.timeline-item { position: relative; margin-bottom: 20px; }
.timeline-item::before {
  content: '';
  position: absolute; left: -20px; top: 6px;
  width: 10px; height: 10px;
  border-radius: 50%; border: 2px solid var(--border);
  background: var(--bg-card);
}

.timeline-item.done::before { background: var(--success); border-color: var(--success); }
.timeline-item.active::before { background: var(--accent); border-color: var(--accent); }

/* ============================================================
   UTILIDADES
   ============================================================ */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 20px; }

.d-flex { display: flex; }
.align-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 12px; }

.text-right { text-align: right; }
.text-center { text-align: center; }
.text-muted { color: var(--text-secondary); }
.text-accent { color: var(--accent); }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }
.text-mono { font-family: var(--font-mono); }

.mt-1 { margin-top: 4px; }
.mt-2 { margin-top: 8px; }
.mt-3 { margin-top: 12px; }
.mt-4 { margin-top: 20px; }
.mb-4 { margin-bottom: 20px; }

.fw-600 { font-weight: 600; }
.fw-700 { font-weight: 700; }
.fs-12 { font-size: 12px; }
.fs-13 { font-size: 13px; }

.separator { height: 1px; background: var(--border); margin: 20px 0; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .sidebar {
    transform: translateX(-100%);
  }
  .sidebar.open { transform: translateX(0); }
  .main-wrapper { margin-left: 0; }
  .sidebar-toggle { display: block; }
  .form-grid-3 { grid-template-columns: 1fr 1fr; }
  .form-grid-4 { grid-template-columns: 1fr 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 640px) {
  .page-content { padding: 16px; }
  .form-grid-2, .form-grid-3, .form-grid-4 { grid-template-columns: 1fr; }
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr; }
  .topbar-search { display: none; }
  .form-group.col-span-2, .form-group.col-span-3 { grid-column: span 1; }
}

/* ============================================================
   LOGIN PAGE
   ============================================================ */
.login-wrapper {
  min-height: 100vh; width: 100%;
  display: flex; align-items: center; justify-content: center;
  background: var(--bg);
  background-image:
    repeating-linear-gradient(0deg, transparent, transparent 40px, rgba(255,255,255,0.015) 40px, rgba(255,255,255,0.015) 41px),
    repeating-linear-gradient(90deg, transparent, transparent 40px, rgba(255,255,255,0.015) 40px, rgba(255,255,255,0.015) 41px);
}

.login-box {
  width: 420px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow);
}

.login-logo {
  display: flex; align-items: center; gap: 14px;
  margin-bottom: 32px;
}

.login-logo-icon {
  width: 48px; height: 48px;
  background: var(--accent);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 22px; color: #000;
}

.login-logo-text h1 { font-size: 22px; font-weight: 800; }
.login-logo-text p { font-size: 12px; color: var(--text-secondary); }