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

:root {
    --primary-color: #2563eb;
    --primary-dark: #1e40af;
    --secondary-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --success-color: #10b981;
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --border-color: #e5e7eb;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    line-height: 1.6;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navigation */
.navbar {
    background-color: var(--bg-primary);
    box-shadow: var(--shadow);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand h1 {
    font-size: 1.5rem;
    color: var(--primary-color);
}

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

.nav-link {
    text-decoration: none;
    color: var(--text-secondary);
    padding: 0.5rem 1rem;
    border-radius: 0.375rem;
    transition: all 0.2s;
}

.nav-link:hover, .nav-link.active {
    color: var(--primary-color);
    background-color: var(--bg-secondary);
}

/* Buttons */
.btn {
    padding: 0.625rem 1.25rem;
    border: none;
    border-radius: 0.375rem;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
    display: inline-block;
}

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

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

.btn-outline {
    background-color: transparent;
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
}

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

.btn-block {
    width: 100%;
    display: block;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Main Content */
.main-content {
    padding: 2rem 0;
    min-height: calc(100vh - 80px);
}

.page-header {
    margin-bottom: 2rem;
}

.page-header h2 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.text-muted {
    color: var(--text-secondary);
}

/* Cards */
.stat-card, .loan-card, .profile-card, .credit-card {
    background-color: var(--bg-primary);
    border-radius: 0.5rem;
    padding: 1.5rem;
    box-shadow: var(--shadow);
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

/* Auth Pages */
.auth-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
}

.auth-container {
    width: 100%;
    max-width: 500px;
    padding: 20px;
}

.auth-card {
    background-color: var(--bg-primary);
    border-radius: 0.5rem;
    padding: 2rem;
    box-shadow: var(--shadow-lg);
}

.auth-header {
    text-align: center;
    margin-bottom: 2rem;
}

.auth-header h1 {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.auth-form h2 {
    margin-bottom: 0.5rem;
}

.auth-footer {
    text-align: center;
    margin-top: 1.5rem;
}

.auth-footer a {
    color: var(--primary-color);
    text-decoration: none;
}

/* Loan Cards */
.loan-card {
    margin-bottom: 1rem;
}

.loan-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.loan-id {
    font-weight: 600;
    color: var(--text-primary);
}

.loan-status {
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    font-size: 0.875rem;
    font-weight: 500;
}

.loan-status.pending { background-color: #fef3c7; color: #92400e; }
.loan-status.approved { background-color: #dbeafe; color: #1e40af; }
.loan-status.active { background-color: #d1fae5; color: #065f46; }
.loan-status.overdue { background-color: #fee2e2; color: #991b1b; }
.loan-status.completed { background-color: #e0e7ff; color: #3730a3; }
.loan-status.rejected { background-color: #f3f4f6; color: #374151; }

.loan-details {
    margin-bottom: 1rem;
}

.loan-detail-item {
    display: flex;
    justify-content: space-between;
    padding: 0.5rem 0;
}

.loan-detail-item .label {
    color: var(--text-secondary);
}

.loan-detail-item .value {
    font-weight: 500;
}

.loan-detail-item .highlight {
    color: var(--primary-color);
    font-weight: 600;
}

.loan-actions {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.loan-actions .btn {
    flex: 1;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 3rem 1rem;
}

.empty-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
}

.empty-state h3 {
    margin-bottom: 0.5rem;
}

.empty-state p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

/* Loan Calculator */
.loan-apply-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.loan-calculator-card, .loan-application-card {
    background-color: var(--bg-primary);
    border-radius: 0.5rem;
    padding: 2rem;
    box-shadow: var(--shadow);
}

.range-labels {
    display: flex;
    justify-content: space-between;
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
}

.loan-breakdown {
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}

.loan-breakdown h4 {
    margin-bottom: 1rem;
}

.breakdown-item {
    display: flex;
    justify-content: space-between;
    padding: 0.5rem 0;
}

.breakdown-item.highlight {
    background-color: var(--bg-secondary);
    padding: 0.75rem;
    border-radius: 0.375rem;
    margin: 0.5rem 0;
}

.breakdown-item.total {
    border-top: 2px solid var(--border-color);
    margin-top: 0.5rem;
    padding-top: 1rem;
    font-size: 1.125rem;
}

.info-box {
    background-color: var(--bg-secondary);
    border-left: 4px solid var(--primary-color);
    padding: 1rem;
    border-radius: 0.375rem;
    margin: 1rem 0;
}

.info-box h4 {
    margin-bottom: 0.5rem;
}

.info-box ul {
    margin-left: 1.5rem;
}

.info-box li {
    margin-bottom: 0.25rem;
    color: var(--text-secondary);
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
    width: auto;
}

/* Profile */
.profile-container {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 2rem;
}

.profile-info {
    margin-bottom: 1.5rem;
}

.info-item {
    display: flex;
    justify-content: space-between;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border-color);
}

.info-item:last-child {
    border-bottom: none;
}

.info-item .label {
    color: var(--text-secondary);
    font-weight: 500;
}

.form-actions {
    display: flex;
    gap: 1rem;
}

.credit-score-display {
    text-align: center;
    margin: 2rem 0;
}

.score-circle {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
    color: white;
}

.score-value {
    font-size: 3rem;
    font-weight: 700;
}

.score-label {
    font-size: 0.875rem;
}

.credit-details {
    margin-top: 1.5rem;
}

.credit-item {
    display: flex;
    justify-content: space-between;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border-color);
}

.credit-item:last-child {
    border-bottom: none;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-content {
    background-color: var(--bg-primary);
    border-radius: 0.5rem;
    max-width: 600px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.modal-close {
    background: none;
    border: none;
    font-size: 2rem;
    cursor: pointer;
    color: var(--text-secondary);
}

.modal-body {
    padding: 1.5rem;
}

/* Filter Section */
.filter-section {
    margin-bottom: 1.5rem;
}

/* Responsive */
@media (max-width: 768px) {
    .nav-menu {
        flex-wrap: wrap;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

    .loan-apply-container {
        grid-template-columns: 1fr;
    }

    .profile-container {
        grid-template-columns: 1fr;
    }

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

    .loan-actions {
        flex-direction: column;
    }
}

.stat-card {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.stat-icon {
    font-size: 2.5rem;
}

.stat-content h3 {
    font-size: 2rem;
    margin-bottom: 0.25rem;
}

.stat-content p {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.form-control {
    width: 100%;
    padding: 0.625rem;
    border: 1px solid var(--border-color);
    border-radius: 0.375rem;
    font-size: 1rem;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

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

.form-text {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
}

/* Alerts */
.alert {
    padding: 1rem;
    border-radius: 0.375rem;
    margin-bottom: 1rem;
}

.alert-error {
    background-color: #fee2e2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

.alert-success {
    background-color: #d1fae5;
    color: #065f46;
    border: 1px solid #a7f3d0;
}

/* Loading */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.loading-overlay.active {
    display: flex;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.spinner-small {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}