/* ============================================
   LAYOUT.CSS — Сетка, контейнеры, структура
   ============================================ */

/* --- Контейнер --- */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

.container-narrow {
    max-width: 960px;
}

.container-wide {
    max-width: 1440px;
}

/* --- Header --- */
.header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(30, 30, 30, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    padding: 0 24px;
}

.header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
    max-width: 1280px;
    margin: 0 auto;
}

.header__logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.header__logo:hover {
    color: var(--accent-green);
}

.header__logo-icon {
    font-size: 1.5rem;
}

/* --- Навигация --- */
.header__nav {
    display: flex;
    align-items: center;
    gap: 32px;
}

.header__nav-links {
    display: flex;
    gap: 24px;
    list-style: none;
}

.header__nav-link {
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 500;
    padding: 8px 0;
    position: relative;
    transition: color var(--transition-fast);
}

.header__nav-link:hover,
.header__nav-link--active {
    color: var(--text-primary);
}

.header__nav-link--active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--accent-green);
    border-radius: 1px;
}

/* --- Профиль в хедере --- */
.header__user {
    display: flex;
    align-items: center;
    gap: 12px;
}

.header__username {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.header__avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--border-color);
    transition: border-color var(--transition-fast);
}

.header__avatar:hover {
    border-color: var(--accent-green);
}

/* --- Основной контент --- */
.main {
    flex: 1;
    padding: 32px 0;
}

/* --- Footer --- */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 20px 0;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* --- Grid система --- */
.grid {
    display: grid;
    gap: 24px;
}

.grid-2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

/* --- Flex утилиты --- */
.flex {
    display: flex;
}

.flex-center {
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.flex-col {
    flex-direction: column;
}

.gap-sm {
    gap: 12px;
}

.gap-md {
    gap: 24px;
}

.gap-lg {
    gap: 32px;
}

/* --- Адаптивность --- */
@media (max-width: 1024px) {
    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .grid-3 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .header__inner {
        flex-direction: column;
        height: auto;
        padding: 16px 0;
        gap: 16px;
    }
    
    .header__nav-links {
        flex-wrap: wrap;
        justify-content: center;
        gap: 16px;
    }
    
    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }
    
    .container {
        padding: 0 16px;
    }
    
    .main {
        padding: 24px 0;
    }
}