:root {
    --sg-bg: #05070b;
    --sg-panel: rgba(13, 17, 24, 0.92);
    --sg-panel-border: rgba(255, 255, 255, 0.08);
    --sg-text: #f5f7fa;
    --sg-muted: #a9b2c3;
    --sg-accent: #ffb100;
    --sg-accent-2: #ff6a00;
    --sg-header-h: 114px;
}

html {
    font-size: 16px;
}

body {
    margin: 0;
    min-width: 320px;
    font-family: Poppins, sans-serif;
    color: var(--sg-text);
    background: radial-gradient(circle at top, rgba(255, 177, 0, 0.12), transparent 24%), linear-gradient(180deg, #090d14 0%, #05070b 100%);
}

a {
    color: inherit;
    text-decoration: none;
}

.master-header {
    position: sticky;
    top: 0;
    z-index: 1030;
    backdrop-filter: blur(14px);
    background: rgba(5, 7, 11, 0.88);
    border-bottom: 1px solid var(--sg-panel-border);
}

.master-nav {
    min-height: var(--sg-header-h);
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    gap: 18px;
    padding: 14px 0;
}

.nav-side {
    display: flex;
    align-items: center;
    gap: 14px;
}

.nav-left {
    justify-content: flex-end;
}

.nav-right {
    justify-content: flex-start;
}

.brand-center {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.brand-logo {
    width: 68px;
    height: 68px;
    object-fit: cover;
    border-radius: 50%;
    border: 2px solid rgba(255, 177, 0, 0.55);
    box-shadow: 0 0 0 5px rgba(255, 177, 0, 0.08), 0 12px 28px rgba(0, 0, 0, 0.45);
}

.brand-title {
    font-size: 1.1rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    white-space: nowrap;
}

.nav-link-item {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    min-height: 48px;
    padding: 0 18px;
    border: 1px solid var(--sg-panel-border);
    border-radius: 999px;
    background: linear-gradient(180deg, rgba(255,255,255,0.05), rgba(255,255,255,0.02));
    color: var(--sg-text);
    font-size: 0.96rem;
    font-weight: 600;
    transition: transform 0.18s ease, border-color 0.18s ease, background 0.18s ease, color 0.18s ease, box-shadow 0.18s ease;
}

    .nav-link-item i {
        color: var(--sg-accent);
        font-size: 1rem;
    }

    .nav-link-item:hover,
    .nav-link-item.is-active {
        color: #fff;
        border-color: rgba(255, 177, 0, 0.45);
        background: linear-gradient(180deg, rgba(255, 177, 0, 0.18), rgba(255, 106, 0, 0.12));
        box-shadow: 0 10px 24px rgba(0, 0, 0, 0.28);
        transform: translateY(-1px);
    }

.page-shell {
    min-height: calc(100vh - var(--sg-header-h));
}

.page-main {
    width: 100%;
    padding: 28px 0 40px;
}

@media (max-width: 991.98px) {
    :root {
        --sg-header-h: 164px;
    }

    .master-nav {
        grid-template-columns: 1fr;
        gap: 12px;
        padding: 12px 0 16px;
    }

    .brand-center {
        order: 1;
    }

    .nav-left,
    .nav-right {
        justify-content: center;
        flex-wrap: wrap;
    }

    .nav-left {
        order: 2;
    }

    .nav-right {
        order: 3;
    }

    .brand-logo {
        width: 62px;
        height: 62px;
    }

    .brand-title {
        font-size: 1rem;
    }
}

@media (max-width: 575.98px) {
    :root {
        --sg-header-h: 190px;
    }

    .container {
        padding-left: 14px;
        padding-right: 14px;
    }

    .nav-side {
        gap: 10px;
    }

    .nav-link-item {
        min-width: calc(50% - 5px);
        padding: 0 12px;
        font-size: 0.9rem;
    }

    .brand-title {
        font-size: 0.92rem;
        letter-spacing: 0.03em;
    }
}

.nav-link-item.disabled-link {
    pointer-events: none;
    opacity: 0.45;
    cursor: not-allowed;
    filter: grayscale(100%);
}