/* ============================================================
   NOVA · Documentation Lite
   Depends on styles/shared.css (tokens, base, components, nav, footer).
   Launch scope: a landing page with five cards + five concise
   articles. No search, sidebar, TOC or drawer.
   ============================================================ */

.doc-main{padding-top:72px}
.doc-wrap{max-width:1100px;margin:0 auto;padding:0 32px}

/* homepage motion language reused */
@keyframes rise{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}
.js .fx{animation:rise var(--dur-reveal) var(--ease-out) var(--d,0ms) both}

/* ---- landing hero ---- */
.doc-hero{position:relative;overflow:hidden;padding:88px 0 40px;text-align:center}
.doc-hero-bg{position:absolute;inset:0;pointer-events:none;background:radial-gradient(ellipse 50% 44% at 50% 0%,var(--iris-glow),transparent 70%)}
.doc-hero h1{position:relative;font-family:var(--font-display);font-weight:700;font-size:clamp(34px,4vw,52px);line-height:1.08;letter-spacing:-.02em}
.doc-hero p{position:relative;margin:18px auto 0;max-width:52ch;color:var(--text-secondary);font-size:17px;line-height:26px}

.doc-sec{padding:48px 0 88px}

/* ---- five documentation cards (reuses card + button language) ---- */
.doc-cards-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.doc-card{display:flex;flex-direction:column;padding:24px;border-radius:var(--radius-xl);border:1px solid var(--border-subtle);background:var(--bg-1);
  transition:transform var(--dur-hover) var(--ease-out),border-color var(--dur-hover) var(--ease-out),box-shadow var(--dur-hover) var(--ease-out)}
.doc-card:hover{transform:translateY(-2px);border-color:var(--border-default);box-shadow:var(--shadow-3)}
.doc-card .icon-box{width:44px;height:44px}
.doc-card h2{margin:16px 0 8px;font-family:var(--font-display);font-size:18px;font-weight:600;letter-spacing:-.01em}
.doc-card p{color:var(--text-secondary);font-size:13.5px;line-height:21px}
.doc-card .btn-secondary{margin-top:18px;align-self:flex-start;height:40px}

/* ---- article: single readable column ---- */
.doc-reading{max-width:760px;margin:0 auto;padding:32px 0 80px}
.crumb{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:12.5px;color:var(--text-tertiary);margin-bottom:22px}
.crumb a{color:var(--text-tertiary);text-decoration:none;transition:color var(--dur-hover) var(--ease-out)}
.crumb a:hover{color:var(--text-primary)}
.crumb svg{opacity:.5}
.crumb [aria-current="page"]{color:var(--text-secondary)}

.doc-article>header{margin-bottom:28px}
.doc-article h1{font-family:var(--font-display);font-size:clamp(30px,3.4vw,40px);line-height:1.12;font-weight:700;letter-spacing:-.02em}
.doc-article .lead{margin-top:14px;font-size:18px;line-height:28px;color:var(--text-secondary)}
.doc-article .meta{margin-top:16px;display:flex;align-items:center;gap:10px;flex-wrap:wrap;font-family:var(--font-mono);font-size:11px;color:var(--text-tertiary)}
.doc-article h2{font-family:var(--font-display);font-size:23px;font-weight:600;letter-spacing:-.02em;margin:40px 0 14px}
.doc-article h3{font-family:var(--font-display);font-size:17px;font-weight:600;margin:28px 0 10px}
.doc-article p{margin:14px 0;color:var(--text-secondary);font-size:15.5px;line-height:26px}
.doc-article a:not(.btn-secondary){color:var(--iris-500);text-decoration:none;border-bottom:1px solid transparent;transition:border-color var(--dur-hover) var(--ease-out)}
.doc-article a:not(.btn-secondary):hover{border-bottom-color:var(--iris-500)}
.doc-article ul,.doc-article ol{margin:14px 0;padding-left:22px;color:var(--text-secondary);font-size:15.5px;line-height:26px}
.doc-article li{margin:6px 0}
.doc-article li::marker{color:var(--text-tertiary)}
.doc-article strong{color:var(--text-primary);font-weight:600}
.doc-article hr{border:0;border-top:1px solid var(--border-subtle);margin:34px 0}
.doc-article code{font-family:var(--font-mono);font-size:13px}
.doc-article kbd{font-family:var(--font-mono);font-size:12px;color:var(--text-primary);background:var(--bg-2);border:1px solid var(--border-default);border-bottom-width:2px;border-radius:6px;padding:2px 7px;line-height:1}

/* accessible table */
.doc-table-wrap{margin:20px 0;border:1px solid var(--border-subtle);border-radius:var(--radius-lg);overflow:hidden;overflow-x:auto}
.doc-article table{width:100%;border-collapse:collapse;font-size:14px}
.doc-article th,.doc-article td{padding:12px 16px;text-align:left;border-bottom:1px solid var(--border-subtle)}
.doc-article thead th{font-family:var(--font-mono);font-weight:500;font-size:11px;letter-spacing:.06em;text-transform:uppercase;color:var(--text-tertiary);background:var(--bg-2)}
.doc-article tbody tr:last-child td{border-bottom:0}
.doc-article td{color:var(--text-secondary)}
.doc-article td:first-child{color:var(--text-primary);font-weight:500}

/* callouts */
.callout{display:flex;gap:12px;margin:20px 0;padding:16px 18px;border-radius:var(--radius-lg);border:1px solid;font-size:14px;line-height:22px}
.callout .ic{flex-shrink:0;margin-top:1px}
.callout b{display:block;margin-bottom:3px;color:var(--text-primary);font-size:13px}
.callout p{margin:0;color:var(--text-secondary);font-size:14px;line-height:22px}
.callout-info{background:var(--cloud-bg);border-color:rgba(92,168,255,.28)} .callout-info .ic{color:var(--cloud)}
.callout-tip{background:var(--iris-glow);border-color:var(--iris-500)} .callout-tip .ic{color:var(--iris-500)}
.callout-warning{background:var(--warning-bg,rgba(245,184,76,.10));border-color:rgba(245,184,76,.32)} .callout-warning .ic{color:var(--warning)}
.callout-danger{background:var(--error-bg,rgba(242,109,109,.10));border-color:rgba(242,109,109,.32)} .callout-danger .ic{color:var(--error,#F26D6D)}
.callout-success{background:var(--success-bg);border-color:rgba(61,214,140,.28)} .callout-success .ic{color:var(--success)}

/* code + terminal + inline command */
.code-block{position:relative;margin:20px 0;border-radius:var(--radius-lg);border:1px solid var(--border-subtle);background:var(--bg-0);overflow:hidden}
.code-block-top{display:flex;align-items:center;gap:8px;height:38px;padding:0 14px;border-bottom:1px solid var(--border-subtle);background:var(--bg-1)}
.code-block-top .lang{font-family:var(--font-mono);font-size:10.5px;letter-spacing:.06em;text-transform:uppercase;color:var(--text-tertiary)}
.copy-btn{margin-left:auto;display:inline-flex;align-items:center;gap:6px;height:28px;padding:0 10px;border-radius:8px;cursor:pointer;border:1px solid var(--border-default);background:transparent;color:var(--text-secondary);font:500 11px/1 var(--font-body);
  transition:background var(--dur-hover) var(--ease-out),border-color var(--dur-hover) var(--ease-out),color var(--dur-hover) var(--ease-out)}
.copy-btn:hover{background:var(--bg-2);color:var(--text-primary);border-color:var(--border-strong)}
.copy-btn.copied{color:var(--success);border-color:var(--success)}
.code-block pre,.terminal pre{margin:0;padding:16px;overflow-x:auto}
.code-block code,.terminal code{font-family:var(--font-mono);font-size:13px;line-height:21px;color:var(--text-secondary)}
.code-block .str{color:var(--success)} .code-block .com,.terminal .out{color:var(--text-tertiary)}
.terminal{margin:20px 0;border-radius:var(--radius-lg);border:1px solid var(--border-subtle);background:var(--bg-0);overflow:hidden}
.terminal-top{display:flex;align-items:center;gap:7px;height:34px;padding:0 14px;border-bottom:1px solid var(--border-subtle)}
.terminal-top i{width:9px;height:9px;border-radius:50%;background:var(--border-strong)}
.terminal-top span{margin-left:8px;font-family:var(--font-mono);font-size:10px;color:var(--text-tertiary)}
.terminal .p{color:var(--iris-500)}
.cmd-inline{display:flex;align-items:center;gap:10px;margin:20px 0;padding:0 14px;height:48px;border-radius:var(--radius-md);background:var(--bg-0);border:1px solid var(--border-default)}
.cmd-inline code{flex:1;min-width:0;overflow-x:auto;white-space:nowrap}
.cmd-inline .p{color:var(--iris-500)}

/* feature + step cards */
.doc-cards{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin:20px 0}
.f-card{padding:20px;border-radius:var(--radius-lg);border:1px solid var(--border-subtle);background:var(--bg-1)}
.f-card .icon-box{width:40px;height:40px}
.f-card h4{margin:14px 0 6px;font-family:var(--font-display);font-size:15px;font-weight:600}
.f-card p{margin:0;color:var(--text-secondary);font-size:13px;line-height:20px}
.step-card{display:flex;gap:16px;margin:14px 0;padding:18px;border-radius:var(--radius-lg);border:1px solid var(--border-subtle);background:var(--bg-1)}
.step-card .num{width:28px;height:28px;flex-shrink:0;border-radius:50%;background:var(--iris-glow);color:var(--iris-500);display:grid;place-items:center;font-family:var(--font-mono);font-size:12px;font-weight:500}
.step-card h4{font-family:var(--font-display);font-size:15px;font-weight:600}
.step-card p{margin:6px 0 0;color:var(--text-secondary);font-size:13.5px;line-height:21px}

/* status pill */
.status{display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:var(--radius-pill);font-size:11px;font-weight:500;line-height:1}
.status i{width:6px;height:6px;border-radius:50%}
.status-stable{color:var(--success);background:var(--success-bg)} .status-stable i{background:var(--success)}
.status-new{color:var(--iris-500);background:var(--iris-glow)} .status-new i{background:var(--iris-500)}

/* prev / next + back */
.doc-pager{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:44px;padding-top:26px;border-top:1px solid var(--border-subtle)}
.doc-pager a{padding:16px 18px;border-radius:var(--radius-lg);border:1px solid var(--border-subtle);background:var(--bg-1);text-decoration:none;color:var(--text-primary);
  transition:transform var(--dur-hover) var(--ease-out),border-color var(--dur-hover) var(--ease-out),box-shadow var(--dur-hover) var(--ease-out)}
.doc-pager a:hover{transform:translateY(-2px);border-color:var(--border-default);box-shadow:var(--shadow-3)}
.doc-pager small{display:flex;align-items:center;gap:6px;font-family:var(--font-mono);font-size:10.5px;color:var(--text-tertiary)}
.doc-pager .next{text-align:right}
.doc-pager .next small{justify-content:flex-end}
.doc-pager b{display:block;margin-top:6px;font-size:14.5px;font-weight:600}
.doc-back{margin-top:20px;text-align:center}
.doc-back a{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--text-tertiary);text-decoration:none}
.doc-back a:hover{color:var(--text-primary)}

/* ---- responsive ---- */
@media (max-width:960px){
  .doc-cards-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:768px){
  .doc-wrap{padding:0 20px}
  .doc-cards-grid{grid-template-columns:1fr}
  .doc-cards{grid-template-columns:1fr}
  .doc-pager{grid-template-columns:1fr}
  .doc-sec{padding:40px 0 72px}
}