body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    color: var(--color-text);
    background-color: var(--color-bg);
    line-height: var(--line-height-normal);
}

#mobileMenu {
    display: none;
}

#mobileMenu.active {
    display: block;
    height: fit-content;
}


.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-6);
}

/* --- Header --- */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    height: var(--header-height);
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    backdrop-filter: blur(12px);
    background: rgba(255, 255, 255, 0.92);
}

.site-header .container {
    display: flex;
    align-items: center;
    height: 100%;
    gap: var(--space-8);
}

.site-logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    flex-shrink: 0;
}

.logo-text {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-normal);
    color: var(--color-gray-700);
    letter-spacing: -0.02em;
}

.logo-text strong {
    font-weight: var(--font-weight-bold);
    color: var(--color-gray-900);
}

.site-nav {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    margin-left: auto;
}

.nav-link {
    padding: var(--space-2) var(--space-4);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
    border-radius: var(--radius-md);
    transition: color var(--transition-fast), background var(--transition-fast);
}

.nav-link:hover {
    color: var(--color-text);
    background: var(--color-gray-100);
}

.site-actions {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: var(--space-2);
    background: none;
    border: none;
    cursor: pointer;
    z-index: 1001;
}

.mobile-menu-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--color-gray-700);
    border-radius: 1px;
    transition: transform var(--transition-fast);
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(8px, -8px);
}

/* Mobile Menu */
.mobile-menu {
    display: flex;
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--color-white);
    flex-direction: column;
    gap: var(--space-4);
    padding: var(--space-6);
    overflow-y: auto;
    z-index: 1000;
    border-top: 1px solid var(--color-border);
    opacity: 0;
    visibility: hidden;
    transform: translateX(-100%);
    transition: all var(--transition-fast);
}

.mobile-menu.active {
    opacity: 1;
    visibility: visible;
    transform: translateX(0);
}

.mobile-nav {
    display: flex;
    flex-direction: column;
    gap: 0;
    border-bottom: 1px solid var(--color-border);
    padding-bottom: var(--space-4);
}

.mobile-nav .nav-link {
    display: block;
    padding: var(--space-4) 0;
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    color: var(--color-text);
    text-decoration: none;
    transition: color var(--transition-fast);
    border-bottom: 1px solid var(--color-gray-100);
}

.mobile-nav .nav-link:last-child {
    border-bottom: none;
}

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

.mobile-actions {
    display: flex;
    flex-direction: column;
    gap: 0;
    margin-top: var(--space-4);
}

.mobile-user-info {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) 0;
    font-weight: var(--font-weight-medium);
    border-bottom: 1px solid var(--color-gray-100);
    margin-bottom: var(--space-3);
}

.mobile-action-link {
    display: block;
    padding: var(--space-3) 0;
    font-size: var(--font-size-base);
    color: var(--color-text);
    text-decoration: none;
    transition: color var(--transition-fast);
    background: none;
    border: none;
    border-bottom: 1px solid var(--color-gray-100);
    cursor: pointer;
    text-align: left;
    font-weight: var(--font-weight-medium);
}

.mobile-action-link:last-child {
    border-bottom: none;
}

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

.mobile-menu .btn {
    width: 100%;
    margin-top: var(--space-2);
    display: block;
}

.mobile-actions .user-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--color-primary);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: var(--font-weight-bold);
    flex-shrink: 0;
}


/* --- Footer --- */
.site-footer {
    background: var(--color-gray-900);
    color: var(--color-gray-300);
    padding: var(--space-16) 0 var(--space-8);
    margin-top: var(--space-24);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: var(--space-12);
}

.footer-brand .site-logo {
    margin-bottom: var(--space-4);
}

.footer-brand .logo-text {
    color: var(--color-gray-300);
}

.footer-brand .logo-text strong {
    color: var(--color-white);
}

.footer-tagline {
    font-size: var(--font-size-sm);
    color: var(--color-gray-400);
    max-width: 280px;
}

.footer-links h4 {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-white);
    margin-bottom: var(--space-4);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.footer-links a {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--color-gray-400);
    padding: var(--space-1) 0;
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--color-white);
}

.footer-bottom {
    margin-top: var(--space-12);
    padding-top: var(--space-8);
    border-top: 1px solid var(--color-gray-700);
    text-align: center;
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
}

/* --- Text utilities --- */
.text-gradient {
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* --- Sections --- */
.section {
    padding: var(--space-20) 0;
}

.section__header {
    text-align: center;
    margin-bottom: var(--space-12);
}

.section__title {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text);
    margin-bottom: var(--space-3);
    letter-spacing: -0.02em;
}

.section__subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.section__footer {
    text-align: center;
    margin-top: var(--space-10);
}

/* --- Error Page --- */
.error-page {
    padding: var(--space-24) 0;
    text-align: center;
}

.error-page__code {
    font-size: 8rem;
    font-weight: var(--font-weight-extrabold);
    color: var(--color-primary-subtle);
    line-height: 1;
}

.error-page__title {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--space-4);
}

.error-page__text {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-8);
}

/* --- Responsive --- */
@media (max-width: 768px) {

    .site-nav,
    .site-actions {
        display: none;
    }

    .mobile-menu-toggle {
        display: flex;
        margin-left: auto;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-8);
    }
}

@media (max-width: 480px) {
    .footer-grid {
        grid-template-columns: 1fr;
    }
}