/* Reset */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Import font */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    color: var(--color-text);
    background-color: var(--color-bg);
    line-height: 1.6;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition);
}

a:hover {
    color: var(--color-primary-dark);
}

img {
    max-width: 100%;
    height: auto;
}

h1, h2, h3, h4, h5, h6 {
    line-height: 1.2;
    font-weight: 700;
    color: var(--color-text);
}

/* Container */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* Main content */
.main-content {
    min-height: calc(100vh - var(--header-height) - 200px);
    padding-top: var(--header-height);
}

/* Header */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    z-index: 1000;
    display: flex;
    align-items: center;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
}

.site-logo {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    font-size: var(--font-size-lg);
    color: var(--color-text);
    text-decoration: none;
    font-weight: 500;
}

.logo-icon {
    display: flex;
    align-items: center;
    flex-shrink: 0;
}

.logo-text strong {
    color: var(--color-primary);
}

.site-nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.nav-link {
    color: var(--color-text-light);
    font-size: var(--font-size-sm);
    font-weight: 500;
    transition: color var(--transition);
}

.nav-link:hover {
    color: var(--color-primary);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-sm);
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text);
    transition: var(--transition);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 0.625rem 1.25rem;
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none;
    line-height: 1.4;
}

.btn-primary {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}

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

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

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

.btn-danger {
    background: var(--color-error);
    color: #fff;
    border-color: var(--color-error);
}

.btn-danger:hover {
    background: #b91c1c;
    border-color: #b91c1c;
    color: #fff;
}

.btn-sm {
    padding: 0.375rem 0.75rem;
    font-size: var(--font-size-xs);
}

.btn-lg {
    padding: 0.875rem 1.75rem;
    font-size: var(--font-size-base);
}

.btn-block {
    width: 100%;
}

.btn-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: var(--color-surface);
    cursor: pointer;
    color: var(--color-text-light);
    transition: all var(--transition);
    font-size: var(--font-size-sm);
}

.btn-icon:hover {
    border-color: var(--color-error);
    color: var(--color-error);
    background: var(--color-error-bg);
}

/* Form elements */
.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text);
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="password"],
.form-group input[type="tel"],
.form-group input[type="number"],
.form-group input[type="date"],
.form-group input[type="time"],
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.625rem 0.875rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
    color: var(--color-text);
    background: var(--color-surface);
    transition: border-color var(--transition), box-shadow var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-bg);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--color-text-muted);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: var(--spacing-md);
}

.form-group-full {
    grid-column: 1 / -1;
}

/* Section styles */
.section-title {
    font-size: 2rem;
    text-align: center;
    margin-bottom: 0.5rem;
    font-weight: 800;
    letter-spacing: -0.025em;
}

.section-subtitle {
    text-align: center;
    color: var(--color-text-light);
    margin-bottom: 3rem;
    font-size: 1.0625rem;
}

/* Flash messages */
.flash-container {
    position: fixed;
    top: calc(var(--header-height) + 10px);
    right: 20px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    max-width: 400px;
}

.flash {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: 500;
    box-shadow: var(--shadow-lg);
    animation: slideIn 0.3s ease;
}

.flash-success {
    background: var(--color-success-bg);
    color: #065f46;
    border: 1px solid #a7f3d0;
}

.flash-error {
    background: var(--color-error-bg);
    color: #991b1b;
    border: 1px solid #fecaca;
}

.flash-warning {
    background: var(--color-warning-bg);
    color: #92400e;
    border: 1px solid #fde68a;
}

.flash-info {
    background: var(--color-info-bg);
    color: #1e40af;
    border: 1px solid #bfdbfe;
}

.flash-close {
    background: none;
    border: none;
    font-size: var(--font-size-xl);
    cursor: pointer;
    color: inherit;
    opacity: 0.5;
    margin-left: var(--spacing-md);
}

.flash-close:hover {
    opacity: 1;
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* Footer */
.site-footer {
    background: var(--color-text);
    color: #cbd5e1;
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
    margin-top: var(--spacing-3xl);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
}

.footer-col h4 {
    color: #fff;
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-base);
}

.footer-col p {
    font-size: var(--font-size-sm);
    line-height: 1.6;
}

.footer-col ul {
    list-style: none;
}

.footer-col ul li {
    margin-bottom: var(--spacing-sm);
}

.footer-col ul a {
    color: #cbd5e1;
    font-size: var(--font-size-sm);
    transition: color var(--transition);
}

.footer-col ul a:hover {
    color: #fff;
}

.footer-logo {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: #fff;
    font-size: var(--font-size-base);
    font-weight: 500;
    margin-bottom: var(--spacing-md);
}

.footer-logo svg {
    flex-shrink: 0;
}

.footer-bottom {
    border-top: 1px solid #334155;
    padding-top: var(--spacing-lg);
    text-align: center;
    font-size: var(--font-size-sm);
}

/* Legal pages */
.legal-section {
    padding: var(--spacing-3xl) 0;
}

.legal-section h1 {
    font-size: var(--font-size-3xl);
    margin-bottom: var(--spacing-xl);
}

.legal-section h2 {
    font-size: var(--font-size-xl);
    margin-top: var(--spacing-2xl);
    margin-bottom: var(--spacing-md);
}

.legal-section p,
.legal-section ul {
    margin-bottom: var(--spacing-md);
    color: var(--color-text-light);
    line-height: 1.7;
}

.legal-section ul {
    padding-left: var(--spacing-xl);
}

.legal-section ul li {
    margin-bottom: var(--spacing-sm);
}

/* Error pages */
.error-section {
    padding: var(--spacing-3xl) 0;
    text-align: center;
}

.error-code {
    font-size: 8rem;
    font-weight: 800;
    color: var(--color-primary-bg);
    line-height: 1;
}

.error-content h1 {
    font-size: var(--font-size-3xl);
    margin-bottom: var(--spacing-md);
}

.error-content p {
    color: var(--color-text-light);
    margin-bottom: var(--spacing-xl);
}

.error-actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
}

/* Payment result */
.payment-result {
    padding: var(--spacing-3xl) 0;
}

.result-card {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
    background: var(--color-surface);
    border-radius: var(--radius-xl);
    padding: var(--spacing-3xl);
    box-shadow: var(--shadow-lg);
}

.result-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-lg);
}

.result-card h1 {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-md);
}

.result-card p {
    color: var(--color-text-light);
    margin-bottom: var(--spacing-md);
}

.result-details {
    background: var(--color-bg);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    margin: var(--spacing-xl) 0;
    text-align: left;
}

.result-details p {
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}

.result-actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    margin-top: var(--spacing-xl);
    flex-wrap: wrap;
}

/* Table responsive */
.table-responsive {
    overflow-x: auto;
}

/* Auth page */
.auth-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: var(--color-bg);
}

.auth-container {
    width: 100%;
    max-width: 440px;
    padding: var(--spacing-xl);
}

.auth-logo {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    font-size: var(--font-size-2xl);
}

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

.auth-logo strong {
    color: var(--color-primary);
}

/* Field error */
.field-error {
    border-color: var(--color-error) !important;
    box-shadow: 0 0 0 3px var(--color-error-bg) !important;
}