* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  transition: background-color 0.25s, color 0.25s, border-color 0.25s;
}

/* --- VARIABLES DE TEMA --- */
:root {
  --bg-main: #0f172a;
  --bg-sidebar: #1e293b;
  --bg-card: rgba(30, 41, 59, 0.7);
  --bg-input: rgba(15, 23, 42, 0.6);
  --border-color: rgba(255, 255, 255, 0.12);
  --text-main: #ffffff;
  --text-muted: #94a3b8;
  --primary: #0284c7;
  --primary-hover: #0369a1;
  --danger: #f87171;
  --tab-inactive-bg: #334155;
  --tab-inactive-text: #cbd5e1;
}

[data-theme="light"] {
  --bg-main: #f1f5f9;
  --bg-sidebar: #ffffff;
  --bg-card: #ffffff;
  --bg-input: #f8fafc;
  --border-color: #cbd5e1;
  --text-main: #0f172a;
  --text-muted: #64748b;
  --primary: #0284c7;
  --primary-hover: #0369a1;
  --danger: #ef4444;
  --tab-inactive-bg: #e2e8f0;
  --tab-inactive-text: #475569;
}

body {
  background-color: var(--bg-main);
  color: var(--text-main);
  min-height: 100vh;
  overflow-x: hidden;
}

/* --- LOGIN --- */
.login-container {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  background: var(--bg-main);
}

.login-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 40px;
  border-radius: 16px;
  width: 100%;
  max-width: 380px;
  text-align: center;
  box-shadow: 0 10px 25px rgba(0,0,0,0.15);
}

.w11-avatar {
  font-size: 3rem;
  margin-bottom: 10px;
}

.subtitle {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-bottom: 20px;
}

/* --- FORMULARIOS --- */
.form-group {
  margin-bottom: 16px;
  text-align: left;
  display: flex;
  flex-direction: column;
}

.form-row {
  display: flex;
  gap: 16px;
}

.form-row .form-group {
  flex: 1;
}

.form-group label {
  font-size: 0.8rem;
  margin-bottom: 6px;
  color: var(--text-main);
}

.form-group input, 
.form-group select,
.form-group textarea,
.items-table input {
  padding: 10px 12px;
  border-radius: 6px;
  border: 1px solid var(--border-color);
  background: var(--bg-input);
  color: var(--text-main);
  outline: none;
  width: 100%;
}

.form-group input:focus, 
.form-group select:focus, 
.form-group textarea:focus,
.items-table input:focus {
  border-color: var(--primary);
}

.form-group.error input {
  border-color: var(--danger);
}

.error-text {
  color: var(--danger);
  font-size: 0.75rem;
  margin-top: 4px;
  display: none;
}

.form-group.error .error-text {
  display: block;
}

.btn-primary {
  width: 100%;
  padding: 10px;
  background: var(--primary);
  color: white;
  border: none;
  border-radius: 6px;
  font-weight: 600;
  cursor: pointer;
  margin-top: 10px;
}

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

.btn-secondary {
  background: transparent;
  border: 1px dashed var(--primary);
  color: var(--primary);
  padding: 8px 14px;
  border-radius: 6px;
  cursor: pointer;
  margin-top: 10px;
}

.btn-sm {
  padding: 4px 8px;
  font-size: 0.75rem;
  margin-top: 0;
}

/* --- DASHBOARD --- */
.w11-dashboard {
  display: flex;
  height: 100vh;
}

.w11-sidebar {
  width: 260px;
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  padding: 20px;
}

.sidebar-header {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.2rem;
  font-weight: bold;
  margin-bottom: 25px;
  color: var(--primary);
}

.sidebar-menu {
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
}

.nav-btn {
  display: flex;
  align-items: center;
  gap: 12px;
  background: transparent;
  border: none;
  color: var(--text-muted);
  padding: 12px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.95rem;
  text-align: left;
}

.nav-btn:hover, .nav-btn.active {
  background: var(--bg-input);
  color: var(--text-main);
}

.nav-btn.active {
  border-left: 4px solid var(--primary);
}

.theme-toggle-container {
  margin-bottom: 15px;
}

.btn-theme {
  width: 100%;
  padding: 8px;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  background: var(--bg-input);
  color: var(--text-main);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.sidebar-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 16px;
  border-top: 1px solid var(--border-color);
}

.user-info {
  display: flex;
  flex-direction: column;
}

.user-name {
  font-size: 0.85rem;
  font-weight: 600;
}

.user-role {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.btn-logout {
  background: transparent;
  border: none;
  cursor: pointer;
  font-size: 1.2rem;
}

/* --- CONTENIDO PRINCIPAL --- */
.w11-main-content {
  flex: 1;
  padding: 40px;
  background: var(--bg-main);
  overflow-y: auto;
}

.w11-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 30px;
  max-width: 600px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}

.w11-card.wide-card {
  max-width: 900px;
}

/* --- PESTAÑAS (TABS) --- */
.tabs-container {
  display: flex;
  gap: 10px;
  margin-bottom: 20px;
}

.tab-btn {
  padding: 10px 20px;
  border: 1px solid var(--border-color);
  background: var(--tab-inactive-bg);
  color: var(--tab-inactive-text);
  border-radius: 6px;
  cursor: pointer;
  font-weight: 600;
  transition: all 0.2s ease;
}

.tab-btn.active {
  background: var(--primary);
  color: #ffffff;
  border-color: var(--primary);
}

/* --- TABLA DE PRODUCTOS Y CONSULTA --- */
.section-subtitle {
  margin: 20px 0 10px 0;
  font-size: 1rem;
  color: var(--primary);
}

.items-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 10px;
}

.items-table th {
  text-align: left;
  font-size: 0.8rem;
  color: var(--text-muted);
  padding-bottom: 8px;
}

.items-table td {
  padding: 6px 4px;
}

.btn-remove {
  background: transparent;
  border: none;
  color: var(--danger);
  cursor: pointer;
  font-weight: bold;
}

.total-container {
  text-align: right;
  font-size: 1.2rem;
  margin: 20px 0;
}

.form-actions {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
  margin-top: 15px;
}

/* --- MODAL --- */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.modal-card {
  width: 100%;
  max-width: 450px;
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 15px;
}

.hidden {
  display: none !important;
}

.print-only {
  display: none;
}

/* --- REGLAS DE IMPRESIÓN --- */
@media print {
  .w11-dashboard, .login-container, .modal-overlay {
    display: none !important;
  }

  .print-only {
    display: block !important;
    font-family: Arial, sans-serif;
    color: #000;
    padding: 20px;
  }

  .print-header {
    display: flex;
    justify-content: space-between;
    border-bottom: 2px solid #000;
    padding-bottom: 10px;
    margin-bottom: 20px;
  }

  .print-details {
    margin-bottom: 20px;
    line-height: 1.6;
  }

  .print-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 20px;
  }

  .print-table th, .print-table td {
    border: 1px solid #000;
    padding: 8px;
    text-align: left;
  }

  .print-total {
    text-align: right;
    margin-bottom: 30px;
  }

  .print-modification-box {
    border: 2px dashed #333;
    background-color: #f8f8f8;
    padding: 12px;
    margin-top: 30px;
    font-size: 0.85rem;
  }
}