/* navigation.css */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    max-width: 420px;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-top: none;
    display: flex;
    justify-content: space-around;
    align-items: center;
    height: 56px;
    padding: 0 8px env(safe-area-inset-bottom, 0px);
    flex-shrink: 0;
    z-index: 1000;
    box-shadow: 0 -1px 8px rgba(0, 0, 0, 0.04);
}

/* MAX WebView: safe-area может быть слишком большой */
html[data-platform="max"] .bottom-nav {
    padding-bottom: 0;
}

/* Fallback: если backdrop-filter не поддерживается — solid фон */
@supports not (backdrop-filter: blur(1px)) {
    .bottom-nav { background: #FFFFFF; }
    [data-theme="dark"] .bottom-nav { background: #1E1B14; }
}

[data-theme="dark"] .bottom-nav {
    background: rgba(30, 27, 20, 0.85);
    box-shadow: 0 -1px 8px rgba(0, 0, 0, 0.2);
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    padding: 6px 8px;
    border-radius: var(--border-radius-small);
    cursor: pointer;
    transition: var(--transition-fast);
    position: relative;
    color: var(--muted);
}

.nav-item.active {
    color: var(--primary);
    font-weight: 700;
}

.nav-item.active::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 2px;
    background: var(--primary);
    border-radius: var(--border-radius-pill);
}

.nav-item:active { transform: scale(0.97); }

.nav-icon { font-size: 20px; line-height: 1; }
.nav-label { font-size: 9px; font-weight: var(--font-caption); }

.nav-icon svg { color: inherit; fill: currentColor; transition: var(--transition-fast); }
.nav-item.active .nav-icon svg { color: var(--primary); fill: var(--primary); }

[data-theme="dark"] .nav-item { color: var(--text-secondary); }