/* ============================================================
   이벗 API 가이드 — intro.css
   사이드바 + 본문 레이아웃 (portal.css 변수 상속)
   ============================================================ */

/* ================= 레이아웃 ================= */
.intro-layout {
    display: grid;
    grid-template-columns: 260px 1fr;
    max-width: 1240px;
    margin: 0 auto;
}

/* ================= 사이드바 ================= */
.intro-sidebar {
    border-right: 1px solid var(--ebut-border);
    padding: 32px 20px 32px 28px;
    position: sticky;
    top: 73px;
    align-self: start;
    max-height: calc(100vh - 73px);
    overflow-y: auto;
}

.intro-sidebar::-webkit-scrollbar { width: 6px; }
.intro-sidebar::-webkit-scrollbar-thumb {
    background: rgba(15, 22, 32, 0.12);
    border-radius: 3px;
}

.intro-nav-group {
    margin-bottom: 28px;
}

.intro-nav-group-title {
    display: block;
    font-size: 11px;
    font-weight: 700;
    color: var(--ebut-text-faint);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin: 0 12px 8px;
}

.intro-nav-link {
    display: block;
    padding: 8px 12px;
    font-size: 14px;
    color: var(--ebut-text-muted);
    border-radius: 7px;
    margin-bottom: 2px;
    transition: color 0.15s ease, background 0.15s ease;
    line-height: 1.4;
}

.intro-nav-link:hover {
    color: var(--ebut-text-strong);
    background: rgba(15, 22, 32, 0.04);
}

.intro-nav-link.active {
    color: var(--ebut-accent);
    background: var(--ebut-accent-soft);
    font-weight: 600;
}

/* ================= 본문 ================= */
.intro-content {
    padding: 48px 56px 96px;
    max-width: 820px;
    min-width: 0;
}

.intro-eyebrow {
    display: inline-block;
    padding: 4px 10px;
    background: var(--ebut-accent-soft);
    color: var(--ebut-accent);
    border-radius: 999px;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.04em;
    margin-bottom: 14px;
    text-transform: uppercase;
}

.intro-content h1 {
    font-size: 36px;
    font-weight: 800;
    color: var(--ebut-text-strong);
    margin: 0 0 16px;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.intro-lede {
    font-size: 17px;
    color: var(--ebut-text-muted);
    margin: 0 0 36px;
    line-height: 1.6;
    word-break: keep-all;
}

.intro-content h2 {
    font-size: 22px;
    font-weight: 700;
    color: var(--ebut-text-strong);
    margin: 44px 0 14px;
    letter-spacing: -0.01em;
}

.intro-content h3 {
    font-size: 16px;
    font-weight: 700;
    color: var(--ebut-text-strong);
    margin: 28px 0 10px;
}

.intro-content p {
    font-size: 15px;
    line-height: 1.75;
    color: var(--ebut-text);
    margin: 0 0 14px;
    word-break: keep-all;
}

.intro-content ul,
.intro-content ol {
    font-size: 15px;
    line-height: 1.75;
    color: var(--ebut-text);
    padding-left: 22px;
    margin: 0 0 18px;
}

.intro-content li { margin: 4px 0; word-break: keep-all; }

.intro-content a {
    color: var(--ebut-accent);
    text-decoration: underline;
    text-underline-offset: 3px;
    text-decoration-thickness: 1px;
}

.intro-content a:hover { color: var(--ebut-accent-hover); }

.intro-content strong { color: var(--ebut-text-strong); font-weight: 700; }

/* ================= 코드 / pre ================= */
.intro-content code {
    background: var(--ebut-navy-soft);
    color: #2360c4;
    padding: 2px 7px;
    border-radius: 5px;
    font-size: 13px;
    font-family: 'JetBrains Mono', 'D2Coding', ui-monospace, SFMono-Regular, Consolas, monospace;
    border: 1px solid var(--ebut-border);
}

.intro-content pre {
    background: var(--ebut-navy-soft);
    border: 1px solid var(--ebut-border);
    border-radius: var(--radius-md);
    padding: 16px 18px;
    font-size: 13px;
    line-height: 1.65;
    overflow-x: auto;
    margin: 16px 0 20px;
    font-family: 'JetBrains Mono', 'D2Coding', ui-monospace, SFMono-Regular, Consolas, monospace;
    color: var(--ebut-text);
}

.intro-content pre code {
    background: transparent;
    border: none;
    padding: 0;
    color: inherit;
    font-size: inherit;
}

/* ================= 테이블 ================= */
.intro-table-wrap {
    overflow-x: auto;
    margin: 14px 0 20px;
    border: 1px solid var(--ebut-border);
    border-radius: var(--radius-md);
}

.intro-content table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
    background: var(--ebut-navy);
}

.intro-content th,
.intro-content td {
    padding: 11px 14px;
    text-align: left;
    border-bottom: 1px solid var(--ebut-border);
    word-break: keep-all;
    color: var(--ebut-text);
}

.intro-content th {
    background: var(--ebut-navy-soft);
    font-weight: 700;
    color: var(--ebut-text-strong);
    font-size: 13px;
}

.intro-content tr:last-child td { border-bottom: none; }

/* ================= 서비스 카드 그리드 ================= */
.intro-service-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
    margin: 20px 0 32px;
}

.intro-service-card {
    display: block;
    padding: 18px 20px;
    background: var(--ebut-navy);
    border: 1px solid var(--ebut-border);
    border-radius: var(--radius-md);
    text-decoration: none;
    transition: border-color 0.15s ease, transform 0.15s ease, box-shadow 0.15s ease;
}

.intro-service-card:hover {
    border-color: var(--ebut-accent);
    transform: translateY(-2px);
    box-shadow: var(--ebut-shadow-md);
    text-decoration: none;
}

.intro-service-card-title {
    font-size: 15px;
    font-weight: 700;
    color: var(--ebut-text-strong);
    margin-bottom: 4px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.intro-service-card-sub {
    font-size: 12px;
    color: var(--ebut-text-muted);
    font-family: 'JetBrains Mono', ui-monospace, monospace;
}

/* ================= 콜아웃 (Tip / Warn) ================= */
.intro-callout {
    padding: 14px 18px;
    border-radius: var(--radius-md);
    margin: 18px 0;
    font-size: 14px;
    line-height: 1.65;
    border-left: 4px solid;
    color: var(--ebut-text);
}

.intro-callout-tip {
    background: rgba(47, 111, 217, 0.06);
    border-color: var(--ebut-accent);
}

.intro-callout-warn {
    background: rgba(217, 119, 6, 0.07);
    border-color: #d97706;
}

.intro-callout-title {
    font-weight: 700;
    color: var(--ebut-text-strong);
    margin-bottom: 4px;
    display: block;
}

/* ================= 페이지 하단 prev/next ================= */
.intro-pager {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
    margin-top: 56px;
    padding-top: 28px;
    border-top: 1px solid var(--ebut-border);
}

.intro-pager-link {
    padding: 16px 20px;
    background: var(--ebut-navy);
    border: 1px solid var(--ebut-border);
    border-radius: var(--radius-md);
    text-decoration: none;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.intro-pager-link:hover {
    border-color: var(--ebut-accent);
    box-shadow: var(--ebut-shadow-sm);
    text-decoration: none;
}

.intro-pager-label {
    font-size: 11px;
    color: var(--ebut-text-faint);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 4px;
}

.intro-pager-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--ebut-text-strong);
}

.intro-pager-link.prev { text-align: left; }
.intro-pager-link.next { text-align: right; grid-column: 2; }
.intro-pager-link.prev:only-child { grid-column: 1; }

/* ================= 사이드바 토글 (모바일) ================= */
.intro-sidebar-toggle {
    display: none;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    font-size: 13px;
    background: var(--ebut-navy);
    border: 1px solid var(--ebut-border);
    border-radius: 8px;
    color: var(--ebut-text);
    cursor: pointer;
    font-weight: 500;
    margin-bottom: 18px;
}

.intro-sidebar-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(15, 22, 32, 0.35);
    z-index: 190;
}

.intro-sidebar-backdrop.open { display: block; }

/* ================= 반응형 ================= */
@media (max-width: 960px) {
    .intro-layout { grid-template-columns: 1fr; max-width: 100%; }

    .intro-sidebar {
        position: fixed;
        top: 0;
        left: -100%;
        width: 280px;
        height: 100vh;
        max-height: 100vh;
        background: var(--ebut-navy);
        border-right: 1px solid var(--ebut-border);
        z-index: 200;
        padding: 80px 20px 32px 28px;
        transition: left 0.25s ease;
    }
    .intro-sidebar.open { left: 0; box-shadow: 8px 0 24px rgba(15, 22, 32, 0.12); }

    .intro-sidebar-toggle { display: inline-flex; }

    .intro-content { padding: 28px 20px 60px; }
    .intro-content h1 { font-size: 28px; }
    .intro-content h2 { font-size: 19px; }

    .intro-service-grid { grid-template-columns: 1fr; }
    .intro-pager { grid-template-columns: 1fr; }
    .intro-pager-link.next { grid-column: 1; text-align: left; }
}