/* Family Finance App - Estilos principales */
:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --success-color: #27ae60;
    --warning-color: #f39c12;
    --danger-color: #e74c3c;
    --light-bg: #ecf0f1;
    --dark-text: #2c3e50;
    --border-radius: 8px;
    --box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--light-bg);
    color: var(--dark-text);
    line-height: 1.6;
}

/* Header */
.header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 1rem 0;
    box-shadow: var(--box-shadow);
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 2rem;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
}

.user-menu {
    display: flex;
    align-items: center;
    gap: 1rem;
}

/* Sidebar */
.sidebar {
    position: fixed;
    left: 0;
    top: 80px;
    width: 250px;
    height: calc(100vh - 80px);
    background: white;
    box-shadow: var(--box-shadow);
    padding: 2rem 0;
    overflow-y: auto;
}

.sidebar-menu {
    list-style: none;
}

.sidebar-menu li {
    margin-bottom: 0.5rem;
}

.sidebar-menu a {
    display: flex;
    align-items: center;
    padding: 1rem 2rem;
    color: var(--dark-text);
    text-decoration: none;
    transition: all 0.3s ease;
}

.sidebar-menu a:hover,
.sidebar-menu a.active {
    background-color: var(--secondary-color);
    color: white;
}

.sidebar-menu .icon {
    margin-right: 1rem;
    font-size: 1.2rem;
}

/* Main content */
.main-content {
    margin-left: 250px;
    padding: 2rem;
    min-height: calc(100vh - 80px);
}

/* Cards */
.card {
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    padding: 2rem;
    margin-bottom: 2rem;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid #eee;
}

.card-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--primary-color);
}

/* Dashboard stats */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: white;
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--secondary-color);
}

.stat-card.income::before { background: var(--success-color); }
.stat-card.expense::before { background: var(--danger-color); }
.stat-card.savings::before { background: var(--warning-color); }

.stat-value {
    font-size: 2rem;
    font-weight: bold;
    margin-bottom: 0.5rem;
}

.stat-label {
    color: #666;
    font-size: 0.9rem;
}

/* Forms */
.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--dark-text);
}

.form-control {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid #ddd;
    border-radius: var(--border-radius);
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-control:focus {
    outline: none;
    border-color: var(--secondary-color);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 500;
    text-decoration: none;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-primary {
    background-color: var(--secondary-color);
    color: white;
}

.btn-primary:hover {
    background-color: #2980b9;
}

.btn-success {
    background-color: var(--success-color);
    color: white;
}

.btn-danger {
    background-color: var(--danger-color);
    color: white;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

/* Tables */
.table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
}

.table th,
.table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid #eee;
}

.table th {
    background-color: #f8f9fa;
    font-weight: 600;
    color: var(--primary-color);
}

.table tr:hover {
    background-color: #f8f9fa;
}

/* Responsive */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s ease;
    }
    
    .sidebar.active {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
        padding: 1rem;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.fade-in {
    animation: fadeIn 0.5s ease-out;
}

/* Chart containers */
.chart-container {
    position: relative;
    height: 400px;
    margin: 2rem 0;
}

/* Alerts */
.alert {
    padding: 1rem;
    border-radius: var(--border-radius);
    margin-bottom: 1rem;
}

.alert-success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert-danger {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.alert-warning {
    background-color: #fff3cd;
    color: #856404;
    border: 1px solid #ffeaa7;
}

/* Modo oscuro general */
[data-bs-theme="dark"] body {
  background: #121212 !important;
  color: #e9ecef;
}

[data-bs-theme="dark"] .card {
  background-color: #1e1f22 !important;
  color: #e9ecef;
  border-color: #2a2b2f !important;
}

[data-bs-theme="dark"] .card-header.bg-light {
  background-color: #2a2b2f !important;
  color: #e9ecef !important;
  border-bottom-color: #2a2b2f !important;
}

[data-bs-theme="dark"] .table {
  color: #e9ecef;
}

[data-bs-theme="dark"] .table thead,
[data-bs-theme="dark"] .table thead.table-light {
  background-color: #1c1d20 !important;
  color: #e9ecef !important;
}

[data-bs-theme="dark"] .content-header {
  /* versión oscura del gradiente del header */
  background: linear-gradient(135deg, #2b2f77 0%, #3b2260 100%) !important;
}

[data-bs-theme="dark"] .alert {
  background-color: #1e1f22;
  color: #e9ecef;
}

[data-bs-theme="dark"] .form-control,
[data-bs-theme="dark"] .form-select {
  background-color: #1e1f22;
  color: #e9ecef;
  border-color: #2a2b2f;
}

[data-bs-theme="dark"] .form-control:focus,
[data-bs-theme="dark"] .form-select:focus {
  background-color: #1e1f22;
  color: #e9ecef;
}

[data-bs-theme="dark"] .btn-outline-secondary {
  color: #cfd3da;
  border-color: #3a3b3f;
}

/* Caja del link de invitación en modo oscuro */
[data-bs-theme="dark"] .invitation-link-box {
  background: #1e1f22 !important;
  border-color: #3a3b3f !important;
}
[data-bs-theme="dark"] .invitation-link-box input {
  background: #18191c !important;
  color: #e9ecef !important;
  border-color: #2a2b2f !important;
}