/* ===== Docs Page Hero ===== */
.docs-page-hero {
    background-color: var(--brand-black);
    padding: 160px 5% 90px;
    border-bottom: 4px solid var(--brand-yellow);
    position: relative;
    overflow: hidden;
}
.docs-page-hero::before {
    content: 'GUIDE';
    position: absolute; top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    font-family: var(--font-display); font-size: 20vw; font-weight: 900;
    color: transparent; -webkit-text-stroke: 1px rgba(255,255,255,0.03);
    pointer-events: none; white-space: nowrap;
}
.docs-hero-inner { position: relative; z-index: 1; max-width: 900px; }
.docs-hero-label {
    display: block; font-family: var(--font-display); font-size: 11px;
    color: var(--brand-yellow); text-transform: uppercase; letter-spacing: 5px; margin-bottom: 24px;
}
.docs-hero-title {
    font-family: var(--font-display); font-weight: 100;
    font-size: clamp(48px, 8vw, 100px); color: var(--brand-white);
    text-transform: uppercase; letter-spacing: 2px; line-height: 1; margin-bottom: 24px;
}
.docs-hero-title span { font-weight: 900; color: var(--brand-yellow); }
.docs-hero-desc { font-size: 16px; color: rgba(255,255,255,0.5); line-height: 1.8; max-width: 620px; margin-bottom: 32px; }
.docs-hero-badges { display: flex; gap: 16px; flex-wrap: wrap; }
.docs-hero-badge {
    font-size: 11px; font-weight: 700; letter-spacing: 1.5px; text-transform: uppercase;
    color: rgba(255,255,255,0.5); border: 1px solid rgba(255,255,255,0.15); padding: 6px 14px;
}

/* ===== Docs Tab Navigation ===== */
.docs-tab-nav {
    position: sticky; top: var(--site-header-height);
    background-color: var(--bg-warm);
    z-index: 100; border-bottom: 2px solid rgba(0,0,0,0.06);
}
.docs-tabs-wrap {
    max-width: 1400px; margin: 0 auto; padding: 0 5%;
    display: flex; overflow-x: auto;
    scrollbar-width: none; -ms-overflow-style: none;
}
.docs-tabs-wrap::-webkit-scrollbar { display: none; }
.docs-tab {
    display: flex; align-items: center; gap: 8px; flex-shrink: 0;
    padding: 20px 24px; font-family: var(--font-display); font-weight: 700;
    font-size: 12px; text-transform: uppercase; letter-spacing: 2px;
    border: none; background: none; cursor: pointer; color: var(--text-gray);
    border-bottom: 3px solid transparent; transition: all 0.25s;
}
.docs-tab:hover { color: var(--brand-black); }
.docs-tab.active { color: var(--brand-black); border-bottom-color: var(--brand-yellow); }

/* ===== Docs Panels ===== */
.docs-main.main-content {
    padding: 0;
    /* In main.css, .main-content uses overflow:hidden, which clips horizontal scroll areas */
    overflow-x: visible;
    overflow-y: visible;
}
.docs-panel { display: none; }
.docs-panel.active { display: block; }
.docs-panel-inner { max-width: 1000px; margin: 0 auto; padding: 80px 5%; }

/* ===== Docs Panel Header ===== */
.docs-panel-header {
    display: flex; justify-content: space-between; align-items: flex-start;
    gap: 40px; margin-bottom: 60px; flex-wrap: wrap;
}
.docs-panel-meta {
    flex-shrink: 0; background-color: var(--brand-black);
    padding: 28px 36px; min-width: 260px; border-top: 4px solid var(--brand-yellow);
}
.docs-meta-item {
    display: flex; flex-direction: column; gap: 4px;
    padding: 12px 0; border-bottom: 1px solid rgba(255,255,255,0.08);
}
.docs-meta-item:last-child { border-bottom: none; }
.docs-meta-label { font-size: 10px; font-weight: 700; text-transform: uppercase; letter-spacing: 2px; color: var(--brand-yellow); }
.docs-meta-val { font-size: 13px; color: rgba(255,255,255,0.7); font-weight: 400; }

/* ===== Step List ===== */
.step-list { display: flex; flex-direction: column; gap: 0; margin-top: 10px; }
.step-item {
    display: flex; gap: 24px; padding: 36px 0;
    border-bottom: 1px solid rgba(0,0,0,0.07);
}
.step-item:last-child { border-bottom: none; }
.step-num {
    font-family: var(--font-display); font-size: 56px; font-weight: 900;
    color: transparent; -webkit-text-stroke: 1px var(--brand-yellow);
    line-height: 1; flex-shrink: 0; width: 70px; padding-top: 4px;
}
.step-body { flex: 1; }
.step-title {
    font-family: var(--font-display); font-size: 22px; font-weight: 700;
    text-transform: uppercase; letter-spacing: 0.5px; color: var(--brand-black);
    margin-bottom: 12px;
}
.step-desc { font-size: 15px; color: var(--text-gray); line-height: 1.8; margin-bottom: 14px; }
.step-desc strong { color: var(--text-dark); font-weight: 700; }

/* ===== Tip / Notice Box ===== */
.docs-tip {
    display: flex; align-items: flex-start; gap: 12px;
    background-color: rgba(255,200,0,0.1); border-left: 4px solid var(--brand-yellow);
    padding: 16px 20px; margin: 16px 0;
    font-size: 13px; line-height: 1.7; color: var(--text-dark);
    border-radius: 0;
}
.docs-tip svg { flex-shrink: 0; margin-top: 2px; color: var(--brand-black); }
.docs-tip strong { font-weight: 700; }

.docs-note {
    display: flex; align-items: flex-start; gap: 12px;
    background-color: var(--bg-warm); border-left: 4px solid var(--brand-black);
    padding: 16px 20px; margin: 16px 0;
    font-size: 13px; line-height: 1.7; color: var(--text-dark);
}
.docs-note svg { flex-shrink: 0; margin-top: 2px; }

/* ===== Code Block ===== */
.docs-code {
    display: block;
    width: 100%;
    max-width: 100%;
    min-width: 0;
    box-sizing: border-box;
    background-color: #1a1a1a; color: #e8e8e8;
    font-family: 'Courier New', 'Consolas', monospace; font-size: 13px;
    padding: 20px 24px; margin: 16px 0; overflow-x: auto;
    border-left: 4px solid var(--brand-yellow); line-height: 1.6;
    white-space: pre;
}
.docs-code .comment { color: #666; }
.docs-code .keyword { color: var(--brand-yellow); }
.docs-code .string { color: #a8d8a8; }

/* ===== Inline Code ===== */
code {
    background-color: rgba(0,0,0,0.07); font-family: 'Courier New', monospace;
    font-size: 12px; padding: 2px 7px; color: var(--text-dark);
    border-radius: 2px;
}

/* ===== Sub-section heading ===== */
.docs-subtitle {
    font-family: var(--font-display); font-size: 18px; font-weight: 700;
    text-transform: uppercase; letter-spacing: 1px; color: var(--brand-black);
    margin: 40px 0 16px; padding-bottom: 8px;
    border-bottom: 2px solid var(--brand-yellow);
    display: flex; align-items: center; gap: 10px;
}

/* ===== Mode Comparison Cards ===== */
.mode-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin: 20px 0; }
.mode-card {
    background-color: var(--brand-white); border: 1px solid rgba(0,0,0,0.08);
    padding: 28px; position: relative; overflow: hidden;
}
.mode-card.recommended { border-top: 4px solid var(--brand-yellow); }
.mode-card-tag {
    display: inline-block; font-size: 10px; font-weight: 900; text-transform: uppercase;
    letter-spacing: 1.5px; padding: 3px 9px; background-color: var(--brand-yellow);
    color: var(--brand-black); margin-bottom: 12px;
}
.mode-card-name {
    font-family: var(--font-display); font-size: 20px; font-weight: 700;
    text-transform: uppercase; letter-spacing: 0.5px; color: var(--brand-black);
    margin-bottom: 10px;
}
.mode-card-desc { font-size: 13px; color: var(--text-gray); line-height: 1.7; }

/* ===== Quick Jump Links ===== */
.docs-jump-list {
    display: flex; flex-wrap: wrap; gap: 10px;
    margin: 24px 0; padding: 20px 24px;
    background-color: var(--bg-warm); border-left: 4px solid var(--brand-black);
}
.docs-jump-link {
    font-size: 12px; font-weight: 700; text-transform: uppercase;
    letter-spacing: 1px; color: var(--text-dark);
    border-bottom: 2px solid var(--brand-yellow); padding-bottom: 2px;
    transition: color 0.2s; cursor: pointer;
}
.docs-jump-link:hover { color: var(--brand-yellow); }

/* ===== Platform Section Divider ===== */
.docs-section-divider {
    border: none; border-top: 1px solid rgba(0,0,0,0.08);
    margin: 50px 0;
}

/* ===== Advanced Panel - TUN Mode Table ===== */
.docs-table-wrap {
    width: 100%;
    max-width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    margin: 16px 0;
}
.docs-table-wrap::-webkit-scrollbar { height: 6px; }
.docs-table-wrap::-webkit-scrollbar-track { background: rgba(0,0,0,0.06); border-radius: 3px; }
.docs-table-wrap::-webkit-scrollbar-thumb { background: rgba(0,0,0,0.25); border-radius: 3px; }

.docs-table { width: 100%; border-collapse: collapse; font-size: 14px; margin: 0; }
.docs-table th {
    background-color: var(--brand-black); color: var(--brand-yellow);
    font-family: var(--font-display); font-weight: 700; text-transform: uppercase;
    letter-spacing: 1px; padding: 12px 18px; text-align: left; font-size: 11px;
    overflow-wrap: anywhere;
    word-break: break-word;
}
.docs-table td {
    padding: 12px 18px; border-bottom: 1px solid rgba(0,0,0,0.06);
    color: var(--text-dark); vertical-align: top; font-size: 13px;
    overflow-wrap: anywhere;
    word-break: break-word;
}
.docs-table tr:last-child td { border-bottom: none; }
.docs-table tr:hover td { background-color: rgba(255,200,0,0.05); }

/* ===== Intro Concepts Row ===== */
.concept-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; margin-top: 40px; }
.concept-card {
    background-color: var(--brand-white); border: 1px solid rgba(0,0,0,0.08);
    padding: 32px; transition: all 0.3s; position: relative;
}
.concept-card::before {
    content: ''; position: absolute; top: 0; left: 0;
    width: 0; height: 4px; background-color: var(--brand-yellow);
    transition: width 0.35s ease;
}
.concept-card:hover::before { width: 100%; }
.concept-card:hover { box-shadow: 0 20px 40px rgba(0,0,0,0.07); }
.concept-icon {
    width: 44px; height: 44px; background-color: var(--brand-yellow);
    border-radius: 50%; display: flex; align-items: center; justify-content: center;
    color: var(--brand-black); margin-bottom: 16px;
}
.concept-title {
    font-family: var(--font-display); font-size: 18px; font-weight: 700;
    text-transform: uppercase; letter-spacing: 0.5px; color: var(--brand-black);
    margin-bottom: 10px;
}
.concept-desc { font-size: 14px; color: var(--text-gray); line-height: 1.7; }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .docs-panel-header { flex-direction: column; }
    .docs-panel-meta { min-width: unset; width: 100%; }
    .mode-grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
    .docs-page-hero { padding: 120px 5% 60px; }
    .docs-hero-title { font-size: clamp(40px, 12vw, 60px); }
    .docs-tab { padding: 16px 16px; font-size: 11px; gap: 5px; }
    .docs-panel-inner { padding: 50px 5%; }
    .step-item { flex-direction: column; gap: 10px; }
    .step-num { font-size: 36px; width: auto; }
    .concept-grid { grid-template-columns: 1fr; }
    .docs-jump-list { flex-direction: column; }
}