/**
 * Personal Budget Dashboard Styles
 * Modern, clean design with smooth animations
 */

:root {
    --primary: #667eea;
    --primary-dark: #764ba2;
    --success: #28a745;
    --danger: #dc3545;
    --warning: #ffc107;
    --dark: #1f1f1f;
    --gray: #6c757d;
    --light: #f8f9fa;
    --white: #ffffff;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --radius: 16px;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    min-height: 100vh;
    color: var(--dark);
    line-height: 1.6;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem;
}

/* Header Styles */
header {
    text-align: center;
    margin-bottom: 3rem;
    animation: fadeInDown 0.6s ease-out;
}

header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

header p {
    color: var(--gray);
    font-size: 1.1rem;
}

/* Error Message */
.error-message {
    background: #f8d7da;
    color: #721c24;
    padding: 1rem 1.5rem;
    border-radius: var(--radius);
    margin-bottom: 2rem;
    border-left: 4px solid var(--danger);
    animation: fadeIn 0.5s ease-out;
}

/* Metrics Grid */
.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.metric-card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 1.5rem;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    animation: fadeInUp 0.6s ease-out;
    animation-fill-mode: both;
}

.metric-card:nth-child(1) { animation-delay: 0.1s; }
.metric-card:nth-child(2) { animation-delay: 0.2s; }
.metric-card:nth-child(3) { animation-delay: 0.3s; }
.metric-card:nth-child(4) { animation-delay: 0.4s; }

.metric-card::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
}

.metric-card.paid::before { background: var(--success); }
.metric-card.unpaid::before { background: var(--danger); }
.metric-card.overdue::before { background: var(--gray); }
.metric-card.total::before { background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%); }

.metric-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.metric-icon {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.metric-label {
    font-size: 0.875rem;
    color: var(--gray);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0.25rem;
}

.metric-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--dark);
}

/* Charts Grid */
.charts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.chart-card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 1.5rem;
    box-shadow: var(--shadow);
    animation: fadeInUp 0.6s ease-out;
    animation-fill-mode: both;
}

.chart-card:nth-child(1) { animation-delay: 0.5s; }
.chart-card:nth-child(2) { animation-delay: 0.6s; }
.chart-card:nth-child(3) { animation-delay: 0.7s; }

.chart-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 1rem;
    text-align: center;
}

.chart-container {
    position: relative;
    height: 300px;
}

.chart-container.doughnut {
    height: 350px;
}

/* Table Card */
.table-card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 1.5rem;
    box-shadow: var(--shadow);
    margin-bottom: 2rem;
    animation: fadeInUp 0.6s ease-out 0.8s both;
    overflow-x: auto;
}

.table-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 1.5rem;
}

/* Table Styles */
.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table th,
.data-table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid #e5e7eb;
}

.data-table th {
    font-weight: 600;
    color: var(--gray);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    background: var(--light);
}

.data-table tr:hover {
    background: var(--light);
}

/* Badges */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.35rem 0.75rem;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 500;
}

.badge-paid {
    background: #d4edda;
    color: #155724;
}

.badge-unpaid {
    background: #f8d7da;
    color: #721c24;
}

.badge-overdue {
    background: #e2e3e5;
    color: #383d41;
}

/* Category Badges */
.badge-category {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
}

.badge-utilities {
    background: #dbeafe;
    color: #1e40af;
}

.badge-subscription {
    background: #f3e8ff;
    color: #7c3aed;
}

.badge-rent {
    background: #ffedd5;
    color: #c2410c;
}

.badge-beverages {
    background: #fce7f3;
    color: #be185d;
}

.badge-food {
    background: #d1fae5;
    color: #065f46;
}

.badge-transport {
    background: #fef3c7;
    color: #b45309;
}

.badge-other {
    background: #f3f4f6;
    color: #4b5563;
}

/* Footer */
footer {
    text-align: center;
    color: var(--gray);
    font-size: 0.875rem;
    animation: fadeIn 0.6s ease-out 1s both;
}

footer p {
    margin-bottom: 0.5rem;
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

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

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }
    
    header h1 {
        font-size: 1.75rem;
    }
    
    .metrics-grid {
        grid-template-columns: 1fr;
    }
    
    .charts-grid {
        grid-template-columns: 1fr;
    }
    
    .chart-container {
        height: 250px;
    }
    
    .data-table {
        font-size: 0.875rem;
    }
    
    .data-table th,
    .data-table td {
        padding: 0.75rem 0.5rem;
    }
}

@media (max-width: 480px) {
    .badge {
        font-size: 0.75rem;
        padding: 0.25rem 0.5rem;
    }
    
    .metric-value {
        font-size: 1.5rem;
    }
}

/* Loading State */
.loading {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 200px;
}

.loading::after {
    content: '';
    width: 40px;
    height: 40px;
    border: 4px solid var(--light);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}