/* ======================================================
   Advanced Configuration Page Styles
   ====================================================== */

/* --- Hero --- */
.adv-hero {
    background: var(--gradient-hero);
    padding: 72px 0 64px;
    text-align: center;
    position: relative;
    overflow: hidden;
    color: #fff;
}

.adv-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse 70% 90% at 50% 110%, rgba(255,255,255,0.07) 0%, transparent 70%);
    pointer-events: none;
}

.adv-hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255,255,255,0.15);
    border: 1px solid rgba(255,255,255,0.25);
    color: rgba(255,255,255,0.9);
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    padding: 6px 16px;
    border-radius: 50px;
    margin-bottom: 22px;
    position: relative;
    z-index: 1;
}

.adv-hero-badge-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: #a78bfa;
    box-shadow: 0 0 8px #a78bfa;
    animation: adv-pulse 2s ease-in-out infinite;
}

@keyframes adv-pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(0.7); }
}

.adv-hero h1 {
    font-size: clamp(30px, 5vw, 52px);
    font-weight: 800;
    color: #fff;
    line-height: 1.15;
    letter-spacing: -1px;
    margin-bottom: 16px;
    position: relative;
    z-index: 1;
}

.adv-hero-hl {
    background: linear-gradient(90deg, #f5d0fe, #ffffff);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.adv-hero p {
    font-size: 17px;
    color: rgba(255,255,255,0.8);
    max-width: 560px;
    margin: 0 auto 32px;
    line-height: 1.7;
    position: relative;
    z-index: 1;
}

.adv-hero-nav {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 10px;
    position: relative;
    z-index: 1;
}

.adv-hero-nav-item {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(255,255,255,0.13);
    border: 1px solid rgba(255,255,255,0.25);
    color: #fff;
    font-size: 13px;
    font-weight: 600;
    padding: 8px 18px;
    border-radius: 50px;
    text-decoration: none;
    backdrop-filter: blur(8px);
    transition: background 0.2s, border-color 0.2s;
}

.adv-hero-nav-item svg {
    width: 14px;
    height: 14px;
    fill: currentColor;
    flex-shrink: 0;
}

.adv-hero-nav-item:hover {
    background: rgba(255,255,255,0.22);
    border-color: rgba(255,255,255,0.4);
    color: #fff;
}

/* --- Page Layout --- */
.adv-layout {
    display: grid;
    grid-template-columns: 240px 1fr;
    gap: 40px;
    align-items: start;
    padding-top: 56px;
    padding-bottom: 80px;
}

/* --- Sidebar --- */
.adv-sidebar {
    position: sticky;
    top: 88px;
}

.adv-sidebar-inner {
    background: #f9f5ff;
    border: 1px solid #ede9f6;
    border-radius: 16px;
    padding: 20px 16px 16px;
}

.adv-sidebar-title {
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: #9f8bc4;
    margin-bottom: 12px;
    padding: 0 8px;
}

.adv-sidebar-nav {
    display: flex;
    flex-direction: column;
    gap: 2px;
    margin-bottom: 16px;
}

.adv-sidebar-link {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 9px 10px;
    border-radius: 8px;
    font-size: 13px;
    font-weight: 500;
    color: #5b3fa0;
    text-decoration: none;
    transition: background 0.15s, color 0.15s;
    line-height: 1.35;
}

.adv-sidebar-link svg {
    width: 14px;
    height: 14px;
    fill: currentColor;
    flex-shrink: 0;
    opacity: 0.7;
}

.adv-sidebar-link:hover,
.adv-sidebar-link.active {
    background: rgba(168,85,247,0.1);
    color: #7c3aed;
}

.adv-sidebar-link.active {
    font-weight: 700;
    color: #7c3aed;
}

.adv-sidebar-link.active svg {
    opacity: 1;
}

.adv-sidebar-gh {
    display: flex;
    align-items: center;
    gap: 8px;
    background: #0e0020;
    color: #fff;
    font-size: 13px;
    font-weight: 600;
    padding: 10px 14px;
    border-radius: 10px;
    text-decoration: none;
    transition: background 0.2s;
}

.adv-sidebar-gh svg {
    width: 16px;
    height: 16px;
    fill: currentColor;
    flex-shrink: 0;
}

.adv-sidebar-gh:hover {
    background: #1e0040;
    color: #fff;
}

/* --- Content Area --- */
.adv-content {
    min-width: 0;
}

/* --- Section --- */
.adv-section {
    margin-bottom: 72px;
    scroll-margin-top: 100px;
}

.adv-section:last-of-type {
    margin-bottom: 40px;
}

.adv-section + .adv-section {
    padding-top: 56px;
    border-top: 1px solid #ede9f6;
}

.adv-section-header {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 20px;
}

.adv-section-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: var(--gradient-purple);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    margin-top: 4px;
}

.adv-section-icon svg {
    width: 20px;
    height: 20px;
    fill: #fff;
}

.adv-section-tag {
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: #a855f7;
    margin-bottom: 4px;
}

.adv-section h2 {
    font-size: 26px;
    font-weight: 800;
    color: var(--color-text-dark);
    line-height: 1.2;
    margin: 0;
}

.adv-section h3 {
    font-size: 17px;
    font-weight: 700;
    color: var(--color-text-dark);
    margin: 28px 0 12px;
}

.adv-lead {
    font-size: 16px;
    color: #4a3568;
    line-height: 1.8;
    margin-bottom: 24px;
}

.adv-lead code,
.adv-section p code {
    background: rgba(168,85,247,0.1);
    color: #7c3aed;
    font-family: 'Fira Code', 'Consolas', monospace;
    font-size: 0.88em;
    padding: 2px 6px;
    border-radius: 4px;
}

.adv-section p {
    font-size: 15px;
    color: #4a3568;
    line-height: 1.75;
    margin-bottom: 16px;
}

/* --- Why Box --- */
.adv-why-box {
    background: linear-gradient(135deg, #fdf4ff 0%, #f5f0ff 100%);
    border: 1px solid #e9d5ff;
    border-radius: 12px;
    padding: 20px 24px;
    margin-bottom: 28px;
}

.adv-why-title {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    font-weight: 700;
    color: #6d28d9;
    margin-bottom: 12px;
}

.adv-why-title svg {
    width: 16px;
    height: 16px;
    fill: currentColor;
    flex-shrink: 0;
}

.adv-why-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.adv-why-list li {
    font-size: 14px;
    color: #4a3568;
    line-height: 1.6;
    padding-left: 20px;
    position: relative;
}

.adv-why-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 8px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: #a855f7;
}

.adv-why-list li code {
    background: rgba(168,85,247,0.1);
    color: #7c3aed;
    font-family: 'Fira Code', 'Consolas', monospace;
    font-size: 0.85em;
    padding: 1px 5px;
    border-radius: 4px;
}

/* --- Steps --- */
.adv-steps {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 28px;
}

.adv-step {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.adv-step-num {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--gradient-purple);
    color: #fff;
    font-size: 14px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    margin-top: 2px;
}

.adv-step-body {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding-top: 4px;
}

.adv-step-body strong {
    font-size: 15px;
    font-weight: 700;
    color: var(--color-text-dark);
}

.adv-step-body span {
    font-size: 14px;
    color: #6b5787;
    line-height: 1.7;
}

.adv-step-body code {
    background: rgba(168,85,247,0.1);
    color: #7c3aed;
    font-family: 'Fira Code', 'Consolas', monospace;
    font-size: 0.85em;
    padding: 1px 5px;
    border-radius: 4px;
}

/* --- Code Block --- */
.adv-code-wrap {
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid #e2d9f3;
    margin-bottom: 20px;
}

.adv-code-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: #1e0a3c;
    padding: 10px 16px;
}

.adv-code-lang {
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.1em;
    color: #c084fc;
    text-transform: uppercase;
}

.adv-code-file {
    font-size: 12px;
    color: rgba(255,255,255,0.4);
    font-family: 'Fira Code', 'Consolas', monospace;
}

.adv-code {
    background: #110726;
    margin: 0;
    padding: 20px;
    overflow-x: auto;
    font-family: 'Fira Code', 'Consolas', 'Monaco', monospace;
    font-size: 13px;
    line-height: 1.75;
    color: #e2d9f3;
}

.adv-code code {
    font-family: inherit;
    font-size: inherit;
    color: inherit;
    background: none;
    padding: 0;
}

/* Syntax highlighting */
.cy-comment { color: #6272a4; }
.cy-str     { color: #f1fa8c; }
.cy-bool    { color: #ff79c6; }
.cy-num     { color: #bd93f9; }

/* --- Tips --- */
.adv-tip {
    display: flex;
    gap: 12px;
    align-items: flex-start;
    background: #f0fdf4;
    border: 1px solid #bbf7d0;
    border-radius: 10px;
    padding: 14px 16px;
    margin-bottom: 16px;
    font-size: 14px;
    color: #15803d;
    line-height: 1.65;
}

.adv-tip svg {
    width: 16px;
    height: 16px;
    fill: #22c55e;
    flex-shrink: 0;
    margin-top: 2px;
}

.adv-tip strong {
    font-weight: 700;
}

.adv-tip code {
    background: rgba(34,197,94,0.12);
    color: #15803d;
    font-family: 'Fira Code', 'Consolas', monospace;
    font-size: 0.85em;
    padding: 1px 5px;
    border-radius: 4px;
}

.adv-tip a {
    color: #15803d;
    text-decoration: underline;
}

.adv-tip-warn {
    background: #fffbeb;
    border-color: #fde68a;
    color: #92400e;
}

.adv-tip-warn svg {
    fill: #f59e0b;
}

.adv-tip-warn code {
    background: rgba(245,158,11,0.12);
    color: #92400e;
}

/* --- Info Cards 2-col --- */
.adv-cards-2col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 28px;
}

.adv-info-card {
    background: #faf5ff;
    border: 1px solid #e9d5ff;
    border-radius: 12px;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.adv-info-card-icon {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.adv-info-card-icon svg {
    width: 18px;
    height: 18px;
    fill: #fff;
}

.adv-icon-red { background: linear-gradient(135deg, #ef4444, #dc2626); }
.adv-icon-green { background: linear-gradient(135deg, #22c55e, #16a34a); }

.adv-info-card strong {
    font-size: 14px;
    font-weight: 700;
    color: var(--color-text-dark);
}

.adv-info-card p {
    font-size: 13px;
    color: #6b5787;
    line-height: 1.65;
    margin: 0;
}

/* --- DNS Modes --- */
.adv-dns-modes {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-top: 20px;
}

.adv-dns-mode {
    background: #f9f5ff;
    border: 1px solid #ede9f6;
    border-radius: 12px;
    padding: 18px 20px;
}

.adv-dns-mode-head {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
}

.adv-dns-mode strong {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    font-weight: 700;
    color: var(--color-text-dark);
    margin-bottom: 6px;
}

.adv-dns-mode strong code {
    background: rgba(168,85,247,0.1);
    color: #7c3aed;
    font-family: 'Fira Code', 'Consolas', monospace;
    font-size: 0.85em;
    padding: 2px 6px;
    border-radius: 4px;
}

.adv-dns-mode p {
    font-size: 13px;
    color: #6b5787;
    line-height: 1.65;
    margin: 0;
}

.adv-dns-badge {
    display: inline-flex;
    align-items: center;
    font-size: 11px;
    font-weight: 700;
    padding: 2px 8px;
    border-radius: 20px;
    background: #e5e7eb;
    color: #6b7280;
    white-space: nowrap;
}

.adv-badge-recommend {
    background: #dcfce7;
    color: #15803d;
}

/* --- Group Types --- */
.adv-group-types {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
    margin-bottom: 28px;
}

.adv-group-type {
    background: #f9f5ff;
    border: 1px solid #ede9f6;
    border-radius: 12px;
    padding: 18px 16px;
}

.adv-group-type-head {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
}

.adv-group-type-head code {
    background: rgba(168,85,247,0.1);
    color: #7c3aed;
    font-family: 'Fira Code', 'Consolas', monospace;
    font-size: 13px;
    font-weight: 700;
    padding: 3px 8px;
    border-radius: 6px;
}

.adv-group-type p {
    font-size: 13px;
    color: #6b5787;
    line-height: 1.65;
    margin: 0;
}

/* --- Table --- */
.adv-table-wrap {
    overflow-x: auto;
    margin-bottom: 24px;
    border-radius: 12px;
    border: 1px solid #ede9f6;
}

.adv-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

.adv-table thead {
    background: #f3e8ff;
}

.adv-table th {
    text-align: left;
    padding: 12px 16px;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: #7c3aed;
    white-space: nowrap;
}

.adv-table td {
    padding: 11px 16px;
    color: #4a3568;
    border-top: 1px solid #f0e8ff;
    vertical-align: middle;
}

.adv-table td code {
    background: rgba(168,85,247,0.1);
    color: #7c3aed;
    font-family: 'Fira Code', 'Consolas', monospace;
    font-size: 0.85em;
    padding: 2px 6px;
    border-radius: 4px;
    white-space: nowrap;
}

.adv-table tr:hover td {
    background: #fdf4ff;
}

/* --- FAQ Accordion --- */
.adv-faq-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: 8px;
}

.adv-faq-item {
    background: #f9f5ff;
    border: 1px solid #ede9f6;
    border-radius: 10px;
    overflow: hidden;
}

.adv-faq-item summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 14px 18px;
    font-size: 14px;
    font-weight: 600;
    color: var(--color-text-dark);
    cursor: pointer;
    list-style: none;
    user-select: none;
}

.adv-faq-item summary::-webkit-details-marker { display: none; }

.adv-faq-arrow {
    width: 18px;
    height: 18px;
    fill: #a855f7;
    flex-shrink: 0;
    transition: transform 0.2s;
}

.adv-faq-item[open] .adv-faq-arrow {
    transform: rotate(180deg);
}

.adv-faq-item[open] summary {
    color: #7c3aed;
}

.adv-faq-body {
    padding: 0 18px 16px;
    font-size: 14px;
    color: #6b5787;
    line-height: 1.75;
    border-top: 1px solid #ede9f6;
    padding-top: 14px;
}

.adv-faq-body strong {
    color: var(--color-text-dark);
}

/* --- Back Bar --- */
.adv-back-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    background: #f9f5ff;
    border: 1px solid #ede9f6;
    border-radius: 14px;
    margin-top: 16px;
}

.adv-back-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    font-weight: 600;
    color: #7c3aed;
    text-decoration: none;
    transition: gap 0.2s;
}

.adv-back-link svg {
    width: 16px;
    height: 16px;
    fill: currentColor;
}

.adv-back-link:hover {
    color: #6d28d9;
    gap: 10px;
}

.adv-gh-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: #0e0020;
    color: #fff;
    font-size: 14px;
    font-weight: 600;
    padding: 10px 20px;
    border-radius: 50px;
    text-decoration: none;
    transition: background 0.2s;
}

.adv-gh-link svg {
    width: 16px;
    height: 16px;
    fill: currentColor;
}

.adv-gh-link:hover {
    background: #1e0040;
    color: #fff;
}

/* --- Responsive --- */
@media (max-width: 960px) {
    .adv-layout {
        grid-template-columns: 1fr;
    }

    .adv-sidebar {
        position: static;
        order: -1;
    }

    .adv-sidebar-inner {
        padding: 16px;
    }

    .adv-sidebar-nav {
        display: grid;
        grid-template-columns: 1fr 1fr;
        margin-bottom: 12px;
    }

    .adv-group-types {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 680px) {
    .adv-hero { padding: 52px 0 44px; }
    .adv-hero h1 { font-size: 28px; }
    .adv-hero p { font-size: 15px; }

    .adv-layout {
        padding-top: 32px;
        padding-bottom: 56px;
        gap: 24px;
    }

    .adv-sidebar-nav {
        grid-template-columns: 1fr;
    }

    .adv-section h2 { font-size: 22px; }
    .adv-section + .adv-section { padding-top: 40px; }

    .adv-cards-2col { grid-template-columns: 1fr; }
    .adv-dns-modes { grid-template-columns: 1fr; }

    .adv-table { font-size: 13px; }
    .adv-table th, .adv-table td { padding: 10px 12px; }

    .adv-back-bar {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }

    .adv-gh-link { width: 100%; justify-content: center; }
}

@media (max-width: 480px) {
    .adv-hero { padding: 40px 0 36px; }
    .adv-hero h1 { font-size: 22px; letter-spacing: -0.5px; }
    .adv-hero p { font-size: 14px; }
    .adv-hero-nav { gap: 6px; }
    .adv-hero-nav-item { font-size: 12px; padding: 6px 12px; }

    .adv-section h2 { font-size: 19px; }
    .adv-section h3 { font-size: 15px; }
    .adv-lead { font-size: 14px; }

    /* Code blocks — smaller font on very small screens */
    .adv-code { font-size: 11.5px; padding: 14px 12px; }
    .adv-code-header { padding: 8px 12px; }

    /* Steps */
    .adv-step { gap: 12px; }
    .adv-step-num { width: 28px; height: 28px; font-size: 12px; }
    .adv-step-body strong { font-size: 14px; }

    /* Table — rely on horizontal scroll, shrink font */
    .adv-table { font-size: 12px; }
    .adv-table th, .adv-table td { padding: 8px 10px; }

    /* Sidebar nav links — compact on tiny screens */
    .adv-sidebar-link { font-size: 12px; padding: 8px 8px; }

    /* Back bar */
    .adv-back-bar { padding: 16px; }
}