/* نوار پایین موبایل/تبلت — تکمیل styles.css */
:root {
    --bottom-nav-offset: calc(15px + 68px + env(safe-area-inset-bottom, 0px));
}

.mobile-nav {
    position: fixed;
    bottom: 15px;
    left: 15px;
    right: 15px;
    background: var(--glass-bg);
    backdrop-filter: blur(22px) saturate(1.15);
    -webkit-backdrop-filter: blur(22px) saturate(1.15);
    border: 1px solid rgba(218, 178, 93, 0.18);
    border-radius: 22px;
    padding: 10px 8px;
    display: flex;
    justify-content: space-around;
    align-items: center;
    z-index: 1000;
    box-shadow: 0 -6px 28px rgba(0, 0, 0, 0.18), inset 0 1px 0 rgba(255, 255, 255, 0.06);
    min-height: 68px;
    padding-bottom: max(10px, env(safe-area-inset-bottom, 0px));
}

.mobile-nav .nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
    text-decoration: none;
    color: var(--text-muted);
    transition: all 0.3s ease;
    padding: 8px 12px;
    border-radius: 12px;
    flex: 1;
    min-width: 0;
    min-height: 44px;
    position: relative;
    margin: 0;
    background: transparent;
    border: none;
}

.mobile-nav .nav-item-form {
    padding: 0;
}

.mobile-nav .nav-item-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
    width: 100%;
    min-height: 44px;
    padding: 8px 12px;
    border: none;
    background: transparent;
    color: inherit;
    cursor: pointer;
    font: inherit;
    border-radius: 12px;
}

.mobile-nav .nav-item:hover,
.mobile-nav .nav-item-btn:hover {
    color: var(--text-primary);
    background: rgba(218, 178, 93, 0.08);
}

.mobile-nav .nav-item.active {
    color: var(--primary-color, #dab25d);
}

.mobile-nav .nav-item.active::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 50%;
    transform: translateX(-50%);
    width: 28px;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--primary-color, #dab25d), transparent);
    border-radius: 2px;
}

.mobile-nav .nav-item svg,
.mobile-nav .nav-item-btn svg {
    width: 22px;
    height: 22px;
    transition: all 0.3s ease;
    stroke: currentColor;
    fill: none;
}

.mobile-nav .nav-item.active svg {
    stroke: var(--primary-color, #dab25d);
}

.mobile-nav .nav-item span,
.mobile-nav .nav-item-btn span {
    font-size: 0.7rem;
    font-family: 'Kalameh', Arial, sans-serif;
    font-weight: 500;
    white-space: nowrap;
    max-width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
    transition: all 0.3s ease;
}

.mobile-nav .nav-item.active span {
    color: var(--primary-color, #dab25d);
    font-weight: 600;
}

.mobile-nav .nav-item:focus-visible,
.mobile-nav .nav-item-btn:focus-visible {
    outline: 2px solid rgba(218, 178, 93, 0.75);
    outline-offset: 2px;
}

[data-theme="light"] .mobile-nav {
    background: rgba(250, 244, 232, 0.94);
    border-color: rgba(160, 120, 42, 0.40);
    box-shadow: 0 -4px 24px rgba(55, 38, 12, 0.10), inset 0 1px 0 rgba(255, 250, 240, 0.85);
}

/* فاصله محتوا از نوار پایین */
.site-main {
    padding-bottom: 110px;
}

@media (max-width: 768px) {
    :root {
        --bottom-nav-offset: calc(12px + 56px + env(safe-area-inset-bottom, 0px));
    }

    .mobile-nav {
        bottom: 10px;
        left: 10px;
        right: 10px;
        padding: 8px 6px;
        min-height: 56px;
        border-radius: 18px;
    }

    .mobile-nav .nav-item,
    .mobile-nav .nav-item-btn {
        padding: 6px 8px;
        gap: 4px;
    }

    .mobile-nav .nav-item svg,
    .mobile-nav .nav-item-btn svg {
        width: 20px;
        height: 20px;
    }

    .mobile-nav .nav-item span,
    .mobile-nav .nav-item-btn span {
        font-size: 0.58rem;
        white-space: normal;
        line-height: 1.15;
        text-align: center;
        display: -webkit-box;
        -webkit-box-orient: vertical;
        -webkit-line-clamp: 2;
        line-clamp: 2;
        overflow: hidden;
        text-overflow: unset;
    }

    .mobile-nav .nav-item.active::after {
        width: 35px;
        height: 2.5px;
    }

    .site-main {
        padding-bottom: 92px;
    }
}

/* دسکتاپ: نوار شناور وسط پایین (هم‌راستا با styles.css disc) */
@media (min-width: 769px) {
    .mobile-nav {
        display: flex;
        left: 50%;
        right: auto;
        transform: translateX(-50%);
        width: auto;
        max-width: 560px;
        min-width: min(420px, 92vw);
        border-radius: 20px;
        padding: 8px 15px;
        box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
        min-height: 65px;
    }

    [data-theme="light"] .mobile-nav {
        box-shadow: 0 8px 24px rgba(72, 52, 20, 0.10), inset 0 1px 0 rgba(255, 255, 255, 0.72);
    }

    .mobile-nav .nav-item {
        min-width: 70px;
        padding: 6px 12px;
        gap: 4px;
    }
}

/* وقتی سایدبار باز است نوار پایین کم‌رنگ نشود زیر آن */
body.sidebar-open .mobile-nav {
    pointer-events: none;
    opacity: 0.35;
}

@media (max-width: 360px) {
    :root {
        --bottom-nav-offset: calc(8px + 50px + env(safe-area-inset-bottom, 0px));
    }

    .mobile-nav {
        left: 8px;
        right: 8px;
        padding: 6px 4px;
        min-height: 50px;
    }

    .mobile-nav .nav-item,
    .mobile-nav .nav-item-btn {
        padding: 4px 2px;
        gap: 3px;
    }

    .mobile-nav .nav-item span,
    .mobile-nav .nav-item-btn span {
        font-size: 0.52rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    .mobile-nav .nav-item,
    .mobile-nav .nav-item-btn,
    .mobile-nav .nav-item svg,
    .mobile-nav .nav-item-btn svg,
    .mobile-nav .nav-item span,
    .mobile-nav .nav-item.active::after {
        transition: none !important;
    }
}