/* Reset & Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #4f46e5;
    --primary-dark: #4338ca;
    --secondary: #06b6d4;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --dark: #1e293b;
    --gray: #64748b;
    --light: #f8fafc;
    --border: #e2e8f0;
    --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);
}

body {
    font-family: 'Poppins', sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: var(--dark);
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
}

/* Header */
.header {
    background: white;
    border-radius: 16px;
    padding: 24px 32px;
    margin-bottom: 24px;
    box-shadow: var(--shadow-lg);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 16px;
}

.logo i {
    font-size: 2.5rem;
    color: var(--primary);
}

.logo-text h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--dark);
}

.logo-text p {
    font-size: 0.9rem;
    color: var(--gray);
}

.header-stats {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.stat-card {
    background: var(--light);
    padding: 16px 24px;
    border-radius: 12px;
    text-align: center;
    min-width: 100px;
    border: 2px solid var(--border);
}

.stat-card.highlight {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border: none;
    color: white;
}

.stat-value {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
}

.stat-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    opacity: 0.8;
}

/* Main */
.main {
    background: white;
    border-radius: 16px;
    padding: 24px 32px;
    box-shadow: var(--shadow-lg);
    min-height: 500px;
}

.info-bar {
    background: linear-gradient(135deg, #dbeafe, #bfdbfe);
    border: 1px solid #93c5fd;
    border-radius: 10px;
    padding: 12px 16px;
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
    color: #1e40af;
    font-size: 0.9rem;
}

/* Controls */
.controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 20px;
}

.search-box {
    position: relative;
    flex: 1;
    min-width: 250px;
}

.search-box i {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--gray);
}

.search-box input {
    width: 100%;
    padding: 12px 16px 12px 42px;
    border: 2px solid var(--border);
    border-radius: 10px;
    font-family: inherit;
    font-size: 0.95rem;
    transition: all 0.3s;
}

.search-box input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.filter-group {
    display: flex;
    gap: 8px;
}

.filter-btn {
    padding: 10px 20px;
    border: 2px solid var(--border);
    background: white;
    border-radius: 8px;
    cursor: pointer;
    font-family: inherit;
    font-weight: 500;
    transition: all 0.3s;
}

.filter-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.filter-btn.active {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    font-family: inherit;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s;
    font-size: 0.95rem;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.btn-secondary {
    background: var(--light);
    color: var(--dark);
    border: 2px solid var(--border);
}

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

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

.btn-success:hover {
    background: #059669;
}

.btn-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--gray);
    padding: 4px;
}

.btn-close:hover {
    color: var(--danger);
}

/* Loading */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.9);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    gap: 16px;
}

.loading-overlay.hidden {
    display: none;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Table */
.table-container {
    overflow-x: auto;
    border-radius: 12px;
    border: 1px solid var(--border);
}

.table-wrapper {
    min-width: 800px;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

.data-table th,
.data-table td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.data-table th {
    background: var(--light);
    font-weight: 600;
    color: var(--dark);
    text-transform: uppercase;
    font-size: 0.8rem;
    letter-spacing: 0.5px;
    position: sticky;
    top: 0;
}

.data-table tbody tr:hover {
    background: #f8fafc;
}

.data-table tbody tr:nth-child(even) {
    background: #fafafa;
}

.data-table tbody tr:nth-child(even):hover {
    background: #f0f9ff;
}

.col-no { width: 50px; text-align: center; }
.col-keluarga { min-width: 120px; }
.col-nama { min-width: 150px; font-weight: 500; }
.col-status { width: 100px; text-align: center; }
.col-total { width: 120px; text-align: right; font-weight: 600; }

.status-badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.status-lunas {
    background: #d1fae5;
    color: #065f46;
}

.status-belum {
    background: #fee2e2;
    color: #991b1b;
}

.payment-cell {
    cursor: pointer;
    text-align: center;
    transition: all 0.2s;
}

.payment-cell:hover {
    background: #e0e7ff;
}

.payment-cell.paid {
    color: var(--success);
    font-weight: 600;
}

.payment-cell.unpaid {
    color: var(--gray);
}

/* Modal */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: white;
    border-radius: 16px;
    width: 90%;
    max-width: 500px;
    box-shadow: var(--shadow-lg);
    transform: translateY(-20px);
    transition: transform 0.3s;
}

.modal-overlay.active .modal {
    transform: translateY(0);
}

.modal-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--dark);
}

.modal-body {
    padding: 20px 24px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-group label {
    font-weight: 500;
    font-size: 0.9rem;
    color: var(--gray);
}

.form-group input,
.form-group textarea {
    padding: 12px 16px;
    border: 2px solid var(--border);
    border-radius: 8px;
    font-family: inherit;
    font-size: 0.95rem;
    transition: all 0.3s;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.form-group input[readonly] {
    background: var(--light);
    cursor: default;
}

.modal-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--gray);
}

.empty-state i {
    font-size: 4rem;
    margin-bottom: 16px;
    opacity: 0.3;
}

/* Footer */
.footer {
    text-align: center;
    padding: 20px;
    color: white;
    margin-top: 20px;
}

.footer i {
    color: #ff6b6b;
}

/* Toast */
.toast {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background: var(--success);
    color: white;
    padding: 16px 24px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    gap: 12px;
    box-shadow: var(--shadow-lg);
    transform: translateX(150%);
    transition: transform 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    z-index: 3000;
}

.toast.show {
    transform: translateX(0);
}

.toast.error {
    background: var(--danger);
}

/* Responsive */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        text-align: center;
    }
    
    .header-stats {
        justify-content: center;
    }
    
    .controls {
        flex-direction: column;
        align-items: stretch;
    }
    
    .search-box {
        min-width: auto;
    }
    
    .filter-group {
        justify-content: center;
    }
    
    .main {
        padding: 16px;
    }
    
    .data-table th,
    .data-table td {
        padding: 8px 10px;
        font-size: 0.8rem;
    }
}