/* ==========================================================================
   Шапка сайта: логотип, виджеты валют/погоды, переключатель темы
   ========================================================================== */

.header {
    position: sticky;
    top: 0;
    backdrop-filter: blur(12px);
    background-color: var(--header-bg);
    border-bottom: 1px solid var(--border);
    padding: 1rem 0;
    z-index: 100;
}

.header__container {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    gap: 1rem;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent), #8b5cf6);
    background-clip: text;
    -webkit-background-clip: text;
    color: transparent;
    justify-self: start;
}

.theme-toggle {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 2rem;
    padding: 0.5rem 1rem;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.2s;
    justify-self: end;
}

.theme-toggle:hover {
    background: var(--accent);
    color: white;
    border-color: var(--accent);
}

/* Виджеты курсов валют и погоды в шапке */
.header__widgets {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.widget {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.5rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 2rem;
    padding: 0.4rem 0.9rem;
    font-size: 0.8rem;
    color: var(--text-secondary);
    box-shadow: var(--shadow-sm);
}

.widget__label {
    font-weight: 700;
    text-transform: uppercase;
    font-size: 0.65rem;
    letter-spacing: 0.05em;
    background: linear-gradient(135deg, var(--accent), #8b5cf6);
    background-clip: text;
    -webkit-background-clip: text;
    color: transparent;
}

.widget__item b {
    color: var(--text-primary);
    font-variant-numeric: tabular-nums;
}

.widget__weather {
    color: var(--text-primary);
    font-weight: 500;
}

@media (max-width: 768px) {
    .header__container {
        grid-template-columns: 1fr;
        justify-items: center;
    }
    .logo,
    .theme-toggle {
        justify-self: center;
    }
    .header__widgets {
        flex-direction: column;
    }
}