/* Каркас страницы в стиле nav.tn.ru */

body.tn-theme {
    font-family: var(--tn-font);
    color: var(--tn-color-text);
    background: var(--tn-color-bg);
    line-height: 1.5;
}

/* Шапка */
.site-header {
    position: relative;
    z-index: 100;
    background: var(--tn-color-bg-card);
    border-bottom: 1px solid var(--tn-color-border);
}

.site-header__top {
    background: var(--tn-color-bg);
    border-bottom: 1px solid var(--tn-color-border);
    padding: 10px 0;
}

.site-header__top-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    font-size: 14px;
    line-height: 130%;
}

.site-header__parent-link {
    color: var(--tn-color-text);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.2s ease;
}

.site-header__parent-link:hover {
    color: var(--tn-color-primary);
}

.site-header__tagline {
    color: var(--tn-color-text-secondary);
}

.site-header__main-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    padding: 14px 0;
}

.site-header .logo {
    margin: 0;
    font-size: 1.5rem;
    font-weight: 700;
    line-height: 1.2;
}

.site-header .logo a {
    color: var(--tn-color-text);
    text-decoration: none;
    transition: color 0.2s ease;
}

.site-header .logo a:hover {
    color: var(--tn-color-primary);
}

.site-nav ul {
    display: flex;
    list-style: none;
    gap: 0;
    margin: 0;
    padding: 0;
    flex-wrap: wrap;
}

.site-nav a {
    display: block;
    padding: 12px 0;
    margin-right: 32px;
    color: var(--tn-color-text);
    text-decoration: none;
    font-size: 16px;
    font-weight: 400;
    border-bottom: 2px solid transparent;
    border-radius: 0;
    transition:
        color 0.2s ease,
        border-color 0.2s ease;
}

.site-nav a:hover {
    color: var(--tn-color-primary);
    background: transparent;
}

.site-nav a.active {
    color: var(--tn-color-primary);
    font-weight: 600;
    border-bottom-color: var(--tn-color-primary);
    background: transparent;
    box-shadow: none;
}

/* Переопределение legacy header из style.css */
body.tn-theme header:not(.site-header) {
    background: var(--tn-color-bg-card);
    color: var(--tn-color-text);
    box-shadow: none;
    border-bottom: 1px solid var(--tn-color-border);
}

body.tn-theme header:not(.site-header) .logo {
    color: var(--tn-color-text);
}

body.tn-theme header:not(.site-header) nav a {
    color: var(--tn-color-text);
}

body.tn-theme header:not(.site-header) nav a:hover,
body.tn-theme header:not(.site-header) nav a.active {
    color: var(--tn-color-primary);
    background: transparent;
}

/* Контент */
body.tn-theme main {
    padding: 28px 0 40px;
}

body.tn-theme .container {
    max-width: var(--tn-container-max);
}

body.tn-theme .page-title {
    color: var(--tn-color-text);
    font-weight: 700;
    font-size: 1.75rem;
    text-align: left;
    margin-bottom: 24px;
}

body.tn-theme .hero {
    background: var(--tn-color-bg-card);
    border-radius: var(--tn-radius);
    box-shadow: var(--tn-shadow-card);
    border: 1px solid var(--tn-color-border);
    text-align: left;
    padding: 32px 36px;
}

body.tn-theme .hero h2 {
    color: var(--tn-color-text);
    font-weight: 700;
    font-size: 2rem;
    line-height: 120%;
}

body.tn-theme .subtitle {
    color: var(--tn-color-text-secondary);
}

body.tn-theme .info-block {
    background: var(--tn-color-bg-card);
    border-radius: var(--tn-radius);
    box-shadow: var(--tn-shadow-card);
    border: 1px solid var(--tn-color-border);
}

body.tn-theme .info-block h3 {
    color: var(--tn-color-text);
    font-weight: 700;
}

body.tn-theme .feature-card {
    background: var(--tn-color-bg);
    border: 1px solid var(--tn-color-border);
    border-radius: var(--tn-radius);
}

body.tn-theme .feature-card:hover {
    border-color: var(--tn-color-primary);
    transform: translateY(-2px);
    box-shadow: var(--tn-shadow-card);
}

body.tn-theme .feature-card h4 {
    color: var(--tn-color-text);
}

body.tn-theme .tool-content,
body.tn-theme .converter-container {
    border: 1px solid var(--tn-color-border);
    border-radius: var(--tn-radius);
    box-shadow: var(--tn-shadow-card);
}

/* Подвал */
body.tn-theme footer {
    background: var(--tn-color-bg-card);
    color: var(--tn-color-text);
    border-top: 1px solid var(--tn-color-border);
    padding: 48px 0 24px;
}

body.tn-theme .footer-section h4 {
    color: var(--tn-color-text);
    font-weight: 600;
}

body.tn-theme .footer-section p,
body.tn-theme .footer-nav a,
body.tn-theme .footer-contacts li {
    color: var(--tn-color-text-secondary);
}

body.tn-theme .footer-nav a:hover {
    color: var(--tn-color-primary);
    border-bottom-color: var(--tn-color-primary);
}

body.tn-theme .contact-icon {
    color: var(--tn-color-primary);
}

body.tn-theme .footer-bottom {
    border-top: 1px solid var(--tn-color-border);
    color: var(--tn-color-text-muted);
}

body.tn-theme .project-name {
    color: var(--tn-color-primary);
}

@media (max-width: 768px) {
    .site-header__main-inner {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }

    .site-nav ul {
        width: 100%;
    }

    .site-nav a {
        margin-right: 20px;
        padding: 10px 0;
    }

    .site-header__top-inner {
        flex-direction: column;
        align-items: flex-start;
    }
}