/* ============================================
   COMPONENTES UI — Reutilizables
   Basado en: ui-preview/index.html
   ============================================ */

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: 'DM Sans', sans-serif;
  font-weight: 700;
  font-size: 14px;
  border: 2px solid transparent;
  border-radius: var(--radius-sm);
  padding: 9px 20px;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  line-height: 1;
  white-space: nowrap;
}
.btn .material-icons { font-size: 18px; }
.btn-primary { background: var(--brand-900); color: #fff; border-color: var(--brand-900); }
.btn-primary:hover { background: var(--brand-700); border-color: var(--brand-700); }
.btn-accent { background: var(--accent-500); color: var(--brand-900); border-color: var(--accent-500); }
.btn-accent:hover { background: var(--accent-400); border-color: var(--accent-400); }
.btn-outline { background: transparent; color: var(--brand-900); border-color: var(--brand-900); }
[data-theme="dark"] .btn-outline { color: var(--brand-300); border-color: var(--brand-300); }
.btn-outline:hover { background: var(--brand-900); color: #fff; }
[data-theme="dark"] .btn-outline:hover { background: var(--brand-300); color: var(--bg); }
.btn-ghost { background: transparent; color: var(--text-secondary); border-color: transparent; }
.btn-ghost:hover { background: var(--bg-surface); color: var(--text); }
.btn-danger { background: var(--danger); color: #fff; border-color: var(--danger); }
.btn-danger:hover { opacity: .9; }
.btn-success { background: var(--success); color: #fff; border-color: var(--success); }
.btn-success:hover { opacity: .9; }
.btn:disabled { opacity: .45; cursor: not-allowed; pointer-events: none; }
.btn-sm { font-size: 12px; padding: 6px 14px; }
.btn-sm .material-icons { font-size: 16px; }
.btn-lg { font-size: 16px; padding: 13px 28px; }
.btn-icon { width: 38px; height: 38px; padding: 0; justify-content: center; }
.btn-icon.btn-sm { width: 30px; height: 30px; }

/* ---- Forms ---- */
.form-group { margin-bottom: 20px; }
.form-label { display: block; font-weight: 700; font-size: 14px; margin-bottom: 6px; }
.form-hint { font-family: 'IBM Plex Mono', monospace; font-size: 11px; color: var(--muted); margin-top: 4px; }
.form-input, .form-select, .form-textarea {
  width: 100%;
  font-family: 'DM Sans', sans-serif;
  font-size: 14px;
  padding: 10px 14px;
  background: var(--input-bg);
  color: var(--text);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  outline: none;
  transition: all var(--transition);
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--brand-900);
  box-shadow: 0 0 0 3px rgba(2,48,89,.12);
}
[data-theme="dark"] .form-input:focus,
[data-theme="dark"] .form-select:focus,
[data-theme="dark"] .form-textarea:focus { box-shadow: 0 0 0 3px rgba(90,159,212,.2); }
.form-input.error { border-color: var(--danger); }
.form-error { font-size: 12px; color: var(--danger); margin-top: 4px; font-weight: 600; }
.form-input:disabled, .form-select:disabled { opacity: .5; cursor: not-allowed; background: var(--bg-surface); }
.form-textarea { min-height: 100px; resize: vertical; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.input-icon-wrapper { position: relative; }
.input-icon-wrapper .material-icons { position: absolute; left: 12px; top: 50%; transform: translateY(-50%); font-size: 18px; color: var(--muted); pointer-events: none; }
.input-icon-wrapper .form-input { padding-left: 38px; }

/* ---- Badges ---- */
.badge {
  display: inline-flex; align-items: center; gap: 5px;
  font-family: 'DM Sans', sans-serif; font-weight: 700; font-size: 12px;
  padding: 4px 10px; border-radius: var(--radius-full); line-height: 1; white-space: nowrap;
}
.badge .material-icons { font-size: 14px; }
.badge-primary { background: var(--brand-100); color: var(--brand-900); }
[data-theme="dark"] .badge-primary { background: rgba(2,48,89,.4); color: var(--brand-300); }
.badge-success { background: #dcfce7; color: #15803d; }
[data-theme="dark"] .badge-success { background: rgba(22,163,74,.15); color: #4ade80; }
.badge-warning { background: #fef3c7; color: #b45309; }
[data-theme="dark"] .badge-warning { background: rgba(245,158,11,.15); color: #fbbf24; }
.badge-danger { background: #fee2e2; color: #b91c1c; }
[data-theme="dark"] .badge-danger { background: rgba(220,38,38,.15); color: #f87171; }
.badge-neutral { background: var(--bg-surface); color: var(--text-secondary); border: 1px solid var(--border); }
.badge-dot::before { content: ''; width: 7px; height: 7px; border-radius: 50%; flex-shrink: 0; }
.badge-success.badge-dot::before { background: #16a34a; }
[data-theme="dark"] .badge-success.badge-dot::before { background: #4ade80; }
.badge-warning.badge-dot::before { background: #f59e0b; }
.badge-danger.badge-dot::before { background: #dc2626; }
[data-theme="dark"] .badge-danger.badge-dot::before { background: #f87171; }
.badge-primary.badge-dot::before { background: var(--brand-900); }
[data-theme="dark"] .badge-primary.badge-dot::before { background: var(--brand-300); }
.badge-neutral.badge-dot::before { background: var(--muted); }

/* ---- Tables ---- */
.table-wrapper {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border var(--transition);
}
.table-toolbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 18px;
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border);
  gap: 12px;
  transition: background var(--transition), border var(--transition);
}
.table-toolbar .search-input {
  font-family: 'DM Sans', sans-serif; font-size: 13px;
  padding: 7px 12px 7px 34px;
  border: 1.5px solid var(--border); border-radius: var(--radius-sm);
  background: var(--input-bg); color: var(--text); outline: none; width: 260px;
  transition: all var(--transition);
}
.table-toolbar .search-input:focus { border-color: var(--brand-900); }
.table-search-wrap { position: relative; }
.table-search-wrap .material-icons { position: absolute; left: 10px; top: 50%; transform: translateY(-50%); font-size: 17px; color: var(--muted); pointer-events: none; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
thead { background: var(--bg-surface); transition: background var(--transition); }
th { text-align: left; padding: 10px 18px; font-weight: 700; font-size: 12px; text-transform: uppercase; letter-spacing: .5px; color: var(--text-secondary); border-bottom: 1px solid var(--border); }
td { padding: 12px 18px; border-bottom: 1px solid var(--border); vertical-align: middle; }
tbody tr { background: var(--bg-elevated); transition: background var(--transition); }
tbody tr:nth-child(even) { background: var(--table-stripe); }
tbody tr:hover { background: var(--bg-surface); }
td.mono { font-family: 'IBM Plex Mono', monospace; font-size: 13px; }
.table-actions { display: flex; gap: 4px; }
.table-pagination {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 18px;
  background: var(--bg-elevated);
  border-top: 1px solid var(--border);
  font-size: 13px; color: var(--text-secondary);
  transition: background var(--transition), border var(--transition);
}
.pagination-btns { display: flex; gap: 4px; }
.pagination-btns button {
  width: 32px; height: 32px;
  display: flex; align-items: center; justify-content: center;
  border: 1px solid var(--border); background: var(--bg-elevated); color: var(--text);
  border-radius: var(--radius-sm); cursor: pointer; font-size: 13px; font-weight: 700;
  transition: all var(--transition);
}
.pagination-btns button:hover { background: var(--bg-surface); }
.pagination-btns button.active { background: var(--brand-900); color: #fff; border-color: var(--brand-900); }
.pagination-btns button .material-icons { font-size: 18px; }

/* ---- Cards ---- */
.card {
  background: var(--bg-elevated); border: 1px solid var(--border);
  border-radius: var(--radius-md); overflow: hidden; transition: all var(--transition);
}
.card:hover { box-shadow: var(--shadow-md); }
.card-body { padding: 20px; }
.card-body h3 { font-size: 18px; font-weight: 800; margin-bottom: 6px; }
.card-body p { font-size: 14px; color: var(--text-secondary); line-height: 1.5; }
.card-footer { padding: 14px 20px; border-top: 1px solid var(--border); display: flex; align-items: center; justify-content: space-between; }
.card-accent-top { border-top: 3px solid var(--brand-900); }
.cards-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 16px; }

/* Stat cards */
.stat-card { text-align: center; padding: 28px 20px; }
.stat-card .stat-icon {
  width: 48px; height: 48px;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: var(--radius-md); background: var(--brand-100); color: var(--brand-900); margin-bottom: 12px;
}
[data-theme="dark"] .stat-card .stat-icon { background: rgba(2,48,89,.4); color: var(--brand-300); }
.stat-card .stat-value { font-size: 36px; font-weight: 800; letter-spacing: -1px; }
.stat-card .stat-label { font-size: 13px; color: var(--muted); margin-top: 4px; }
.stats-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 16px; }

/* ---- Modal ---- */
.modal-overlay {
  display: none; position: fixed; inset: 0;
  background: var(--overlay); z-index: 500;
  align-items: center; justify-content: center; padding: 24px;
}
.modal-overlay.active { display: flex; }
.modal {
  background: var(--bg-elevated); border-radius: var(--radius-lg);
  width: 100%; max-width: 520px; box-shadow: var(--shadow-lg);
  animation: modalIn .2s ease; transition: background var(--transition);
}
@keyframes modalIn { from { opacity: 0; transform: translateY(12px) scale(.97); } to { opacity: 1; transform: translateY(0) scale(1); } }
.modal-header { display: flex; align-items: center; justify-content: space-between; padding: 20px 24px; border-bottom: 1px solid var(--border); }
.modal-header h3 { font-size: 18px; font-weight: 800; }
.modal-close {
  width: 32px; height: 32px;
  display: flex; align-items: center; justify-content: center;
  border: none; background: transparent; color: var(--muted);
  border-radius: var(--radius-sm); cursor: pointer; transition: all var(--transition);
}
.modal-close:hover { background: var(--bg-surface); color: var(--text); }
.modal-body { padding: 24px; }
.modal-footer { display: flex; justify-content: flex-end; gap: 8px; padding: 16px 24px; border-top: 1px solid var(--border); }

/* ---- Tabs ---- */
.tabs { display: flex; gap: 0; border-bottom: 2px solid var(--border); margin-bottom: 24px; }
.tab-btn {
  padding: 10px 20px; font-family: 'DM Sans', sans-serif; font-weight: 700; font-size: 14px;
  color: var(--muted); background: none; border: none;
  border-bottom: 2px solid transparent; margin-bottom: -2px;
  cursor: pointer; transition: all var(--transition);
  display: flex; align-items: center; gap: 6px;
}
.tab-btn:hover { color: var(--text); }
.tab-btn.active { color: var(--brand-900); border-bottom-color: var(--brand-900); }
[data-theme="dark"] .tab-btn.active { color: var(--brand-300); border-bottom-color: var(--brand-300); }
.tab-btn .material-icons { font-size: 18px; }
.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* ---- Toast ---- */
.toast-container {
  position: fixed; top: 20px; right: 20px; z-index: 1000;
  display: flex; flex-direction: column; gap: 8px; pointer-events: none;
}
.toast {
  display: flex; align-items: center; gap: 10px;
  padding: 14px 20px; border-radius: var(--radius-md);
  background: var(--bg-elevated); border: 1px solid var(--border);
  box-shadow: var(--shadow-lg); font-size: 14px; font-weight: 600;
  min-width: 300px; max-width: 420px;
  pointer-events: auto; animation: toastIn .3s ease; transition: all var(--transition);
}
.toast.toast-out { animation: toastOut .3s ease forwards; }
@keyframes toastIn { from { opacity: 0; transform: translateX(40px); } to { opacity: 1; transform: translateX(0); } }
@keyframes toastOut { from { opacity: 1; } to { opacity: 0; transform: translateX(40px); } }
.toast .material-icons { font-size: 20px; flex-shrink: 0; }
.toast .toast-msg { flex: 1; }
.toast .toast-close {
  width: 24px; height: 24px; display: flex; align-items: center; justify-content: center;
  border: none; background: transparent; color: var(--muted); border-radius: 4px; cursor: pointer;
}
.toast-success { border-left: 3px solid var(--success); }
.toast-success .material-icons { color: var(--success); }
.toast-danger { border-left: 3px solid var(--danger); }
.toast-danger .material-icons { color: var(--danger); }
.toast-warning { border-left: 3px solid var(--warning); }
.toast-warning .material-icons { color: var(--warning); }
.toast-info { border-left: 3px solid var(--info); }
.toast-info .material-icons { color: var(--info); }

/* ---- Dropdown ---- */
.dropdown { position: relative; display: inline-block; }
.dropdown-menu {
  position: absolute; top: calc(100% + 4px); right: 0;
  min-width: 180px; background: var(--bg-elevated);
  border: 1px solid var(--border); border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg); padding: 6px; z-index: 200;
  display: none; animation: dropIn .15s ease;
}
.dropdown-menu.open { display: block; }
@keyframes dropIn { from { opacity: 0; transform: translateY(-4px); } to { opacity: 1; transform: translateY(0); } }
.dropdown-item {
  display: flex; align-items: center; gap: 8px;
  padding: 8px 12px; font-family: 'DM Sans', sans-serif; font-size: 13px; font-weight: 600;
  color: var(--text); border: none; background: none; width: 100%;
  border-radius: 4px; cursor: pointer; transition: all var(--transition); text-align: left;
}
.dropdown-item:hover { background: var(--bg-surface); }
.dropdown-item .material-icons { font-size: 18px; color: var(--muted); }
.dropdown-item.danger { color: var(--danger); }
.dropdown-item.danger .material-icons { color: var(--danger); }
.dropdown-divider { height: 1px; background: var(--border); margin: 4px 0; }

/* ---- Empty State ---- */
.empty-state { text-align: center; padding: 60px 24px; }
.empty-state .material-icons { font-size: 56px; color: var(--border); margin-bottom: 16px; }
.empty-state h3 { font-size: 18px; font-weight: 800; margin-bottom: 6px; }
.empty-state p { font-size: 14px; color: var(--muted); max-width: 360px; margin: 0 auto 20px; }

/* ---- Skeleton ---- */
.skeleton { background: var(--bg-surface); border-radius: var(--radius-sm); position: relative; overflow: hidden; }
.skeleton::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(90deg, transparent 0%, rgba(255,255,255,.4) 50%, transparent 100%);
  animation: shimmer 1.5s infinite;
}
[data-theme="dark"] .skeleton::after { background: linear-gradient(90deg, transparent 0%, rgba(255,255,255,.06) 50%, transparent 100%); }
@keyframes shimmer { 0% { transform: translateX(-100%); } 100% { transform: translateX(100%); } }
.skeleton-text { height: 14px; margin-bottom: 10px; }
.skeleton-heading { height: 22px; width: 40%; margin-bottom: 16px; }

/* ---- Avatar ---- */
.avatar {
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 50%; font-family: 'DM Sans', sans-serif;
  font-weight: 800; color: #fff; background: var(--brand-900); flex-shrink: 0;
}
.avatar-sm { width: 28px; height: 28px; font-size: 11px; }
.avatar-md { width: 36px; height: 36px; font-size: 13px; }

/* ---- Alerts ---- */
.alert {
  display: flex; align-items: flex-start; gap: 10px;
  padding: 14px 18px; border-radius: var(--radius-sm);
  font-size: 14px; line-height: 1.5; border: 1px solid;
}
.alert .material-icons { font-size: 20px; flex-shrink: 0; margin-top: 1px; }
.alert-info { background: #eff6ff; color: #1e40af; border-color: #bfdbfe; }
[data-theme="dark"] .alert-info { background: rgba(2,132,199,.1); color: #7dd3fc; border-color: rgba(2,132,199,.25); }
.alert-success { background: #f0fdf4; color: #166534; border-color: #bbf7d0; }
[data-theme="dark"] .alert-success { background: rgba(22,163,74,.1); color: #86efac; border-color: rgba(22,163,74,.25); }
.alert-warning { background: #fffbeb; color: #92400e; border-color: #fde68a; }
[data-theme="dark"] .alert-warning { background: rgba(245,158,11,.1); color: #fcd34d; border-color: rgba(245,158,11,.25); }
.alert-danger { background: #fef2f2; color: #991b1b; border-color: #fecaca; }
[data-theme="dark"] .alert-danger { background: rgba(220,38,38,.1); color: #fca5a5; border-color: rgba(220,38,38,.25); }

/* ---- Stepper ---- */
.stepper { display: flex; align-items: flex-start; margin-bottom: 32px; }
.step { flex: 1; display: flex; flex-direction: column; align-items: center; position: relative; }
.step-indicator {
  width: 36px; height: 36px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 14px;
  border: 2px solid var(--border); background: var(--bg-elevated); color: var(--muted);
  position: relative; z-index: 2; transition: all var(--transition);
}
.step.active .step-indicator { border-color: var(--brand-900); background: var(--brand-900); color: #fff; }
[data-theme="dark"] .step.active .step-indicator { border-color: var(--brand-300); background: var(--brand-300); color: var(--bg); }
.step.completed .step-indicator { border-color: var(--success); background: var(--success); color: #fff; }
.step-label { margin-top: 8px; font-size: 12px; font-weight: 700; color: var(--muted); text-align: center; }
.step.active .step-label { color: var(--text); }
.step.completed .step-label { color: var(--success); }
.step-line { position: absolute; top: 18px; left: calc(50% + 18px); right: calc(-50% + 18px); height: 2px; background: var(--border); z-index: 1; }
.step.completed .step-line { background: var(--success); }
.step:last-child .step-line { display: none; }

/* ---- Grid ---- */
.grid { display: grid; gap: 16px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 900px) { .grid-4 { grid-template-columns: repeat(2, 1fr); } .grid-3 { grid-template-columns: repeat(2, 1fr); } }

/* ---- Stat icon color variants ---- */
.stat-icon-success { background: #f0fdf4 !important; color: var(--success) !important; }
[data-theme="dark"] .stat-icon-success { background: rgba(22,163,74,.15) !important; }
.stat-icon-warning { background: #fffbeb !important; color: var(--warning) !important; }
[data-theme="dark"] .stat-icon-warning { background: rgba(245,158,11,.15) !important; }
.stat-icon-info { background: #eff6ff !important; color: var(--info) !important; }
[data-theme="dark"] .stat-icon-info { background: rgba(2,132,199,.15) !important; }
.stat-icon-primary { background: rgba(2,48,89,.08) !important; color: var(--brand-900) !important; }

/* ---- Utility ---- */
.flex-row { display: flex; align-items: center; gap: 12px; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.gap-8 { gap: 8px; }
.gap-16 { gap: 16px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }
.text-muted { color: var(--muted); }
.text-mono { font-family: 'IBM Plex Mono', monospace; font-size: 13px; }
.section-label {
  font-family: 'IBM Plex Mono', monospace; font-weight: 600;
  font-size: 11px; text-transform: uppercase; letter-spacing: 1.5px; color: var(--muted);
}

/* ---- Search bar ---- */
.search-bar { position: relative; }
.search-bar .material-icons { position: absolute; left: 10px; top: 50%; transform: translateY(-50%); color: var(--muted); font-size: 20px; }
.search-bar input { padding-left: 36px; }

/* ---- Button variants ---- */
.btn-danger-ghost { color: var(--danger); }
.btn-danger-ghost:hover { background: rgba(220,38,38,.08); }
.text-right { text-align: right; }