/* Moore /md — curso prático de IA. Estética Moore (cream/ink/Geist). */

.md-page { min-height: 100vh; background: var(--cream); color: var(--ink); display: flex; flex-direction: column; }
.md-container { max-width: 920px; margin: 0 auto; padding: 0 24px; width: 100%; }
.md-section { padding: 48px 24px 96px; }

/* Top nav */
.md-topnav { position: sticky; top: 0; z-index: 40; background: rgba(246,244,239,0.85); backdrop-filter: blur(12px); border-bottom: 1px solid var(--border); }
.md-topnav-inner { display: flex; align-items: center; justify-content: space-between; padding-top: 18px; padding-bottom: 18px; }
.md-logo { font-family: var(--font-sans); font-size: 20px; font-weight: 600; letter-spacing: -0.03em; color: var(--ink); text-decoration: none; border-bottom: 0; display: inline-flex; align-items: baseline; }
.md-logo-dot { color: var(--graphite); }
.md-logo-md { font-family: var(--font-mono); font-size: 12px; font-weight: 400; color: var(--warm-500); margin-left: 4px; letter-spacing: 0; }
.md-logo-sm { font-size: 17px; }
.md-topnav-links { display: flex; gap: 28px; }
.md-topnav-links a { font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--warm-700); text-decoration: none; border-bottom: 0; }
.md-topnav-links a:hover { color: var(--ink); opacity: 1; }

/* Hero */
.md-hero { padding: 72px 0 40px; }
.md-eyebrow { font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--warm-600); margin-bottom: 18px; }
.md-eyebrow-accent { color: var(--graphite); }
.md-display { font-family: var(--font-display); font-size: clamp(44px, 7vw, 92px); font-weight: 500; line-height: 1.0; letter-spacing: -0.04em; margin: 0; max-width: 16ch; }
.md-accent { color: var(--graphite); }
.md-lead { font-size: 20px; line-height: 1.55; color: var(--warm-700); margin: 28px 0 0; max-width: 60ch; }
.md-lead-tight { font-size: 18px; max-width: 58ch; }
.md-cta-row { display: flex; gap: 18px; align-items: center; flex-wrap: wrap; margin-top: 36px; }
.md-btn { display: inline-flex; align-items: center; gap: 10px; font-family: var(--font-sans); font-size: 15px; font-weight: 500; padding: 14px 24px; border-radius: 2px; border: 1px solid transparent; cursor: pointer; text-decoration: none; transition: background var(--dur-base) var(--ease-out); }
.md-btn-primary { background: var(--ink); color: var(--cream); border-bottom: 0; }
.md-btn-primary:hover { background: var(--warm-800); opacity: 1; }
.md-btn-ghost { font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--graphite); text-decoration: none; border-bottom: 1px solid var(--graphite-soft); padding-bottom: 2px; }
.md-btn-ghost:hover { color: var(--ink); opacity: 1; }

/* Home columns */
.md-home-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; padding-top: 56px; padding-bottom: 96px; border-top: 1px solid var(--border); margin-top: 64px; }
.md-home-h { font-size: 22px; font-weight: 500; letter-spacing: -0.02em; margin: 8px 0 10px; }
.md-home-p { font-size: 15px; line-height: 1.6; color: var(--warm-700); margin: 0; }
.md-inline { color: var(--graphite); text-decoration: none; border-bottom: 1px solid var(--graphite-soft); padding-bottom: 1px; }
.md-inline:hover { opacity: 1; color: var(--ink); }

/* Titles */
.md-title-xl { font-family: var(--font-display); font-size: clamp(40px, 6vw, 72px); font-weight: 500; line-height: 1.02; letter-spacing: -0.035em; margin: 14px 0 0; }
.md-muted { color: var(--warm-400); }
.md-breadcrumb { font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.1em; text-transform: uppercase; margin-bottom: 28px; }
.md-breadcrumb a { color: var(--warm-600); text-decoration: none; border-bottom: 0; }
.md-breadcrumb a::before { content: '‹ '; }

/* Acts + exercise list */
.md-act { margin-top: 56px; }
.md-act-head { display: flex; align-items: baseline; justify-content: space-between; padding-bottom: 16px; }
.md-act-title { font-size: 16px; font-weight: 600; letter-spacing: -0.01em; }
.md-act-note { font-family: var(--font-mono); font-size: 12px; color: var(--warm-500); font-style: italic; }
.md-ex-list { border: 1px solid var(--border); border-radius: 4px; overflow: hidden; }
.md-ex-row { display: grid; grid-template-columns: 48px 1fr auto 24px; align-items: center; gap: 16px; padding: 22px 24px; text-decoration: none; border-bottom: 1px solid var(--border); color: var(--ink); transition: background var(--dur-base) var(--ease-out); }
.md-ex-row:last-child { border-bottom: 0; }
.md-ex-row:hover { background: var(--cream-2); opacity: 1; }
.md-ex-num { font-family: var(--font-mono); font-size: 13px; color: var(--graphite); }
.md-ex-name { font-size: 18px; font-weight: 500; letter-spacing: -0.01em; }
.md-ex-min { font-family: var(--font-mono); font-size: 12px; color: var(--warm-500); }
.md-ex-chev { color: var(--warm-400); font-size: 20px; }

/* Exercise page */
.md-ex-tag { display: block; font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--warm-500); margin-bottom: 10px; }
.md-ex-id { font-family: var(--font-display); font-size: clamp(36px, 5vw, 56px); font-weight: 500; line-height: 1; color: var(--warm-300); letter-spacing: -0.03em; margin-bottom: 4px; }
.md-ex-sub { font-size: 20px; line-height: 1.5; color: var(--warm-700); margin: 14px 0 28px; max-width: 54ch; }
.md-step-help { display: inline-block; font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.06em; color: var(--graphite); background: none; border: 0; border-bottom: 1px dashed var(--graphite-soft); padding: 0 0 2px; cursor: pointer; margin: 0 0 14px; }
.md-step-help:hover { color: var(--ink); }

/* Collapsible reveals (Debrief / FAQ / Go deeper / Interlude) */
.md-reveals { margin-top: 40px; border-top: 1px solid var(--border); }
.md-reveal { border-bottom: 1px solid var(--border); }
.md-reveal > summary { list-style: none; cursor: pointer; padding: 18px 28px 18px 0; position: relative; font-size: 16px; font-weight: 500; color: var(--ink); }
.md-reveal > summary::-webkit-details-marker { display: none; }
.md-reveal > summary::after { content: '+'; position: absolute; right: 0; top: 16px; font-size: 20px; color: var(--warm-500); font-weight: 400; }
.md-reveal[open] > summary::after { content: '\2212'; }
.md-reveal-tag { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--graphite); margin-right: 8px; }
.md-reveal-body { padding: 0 0 20px; }
.md-reveal-body p { font-size: 16px; line-height: 1.6; color: var(--warm-700); margin: 0 0 10px; max-width: 64ch; }
.md-body { font-size: 17px; line-height: 1.65; color: var(--warm-800); margin: 0 0 18px; max-width: 64ch; }
.md-h2 { font-size: 15px; font-weight: 600; letter-spacing: 0.02em; text-transform: uppercase; color: var(--graphite); margin: 44px 0 14px; font-family: var(--font-mono); }

/* Before block */
.md-before-item { display: grid; grid-template-columns: 32px 1fr; gap: 16px; padding: 16px 0; border-top: 1px solid var(--border); }
.md-before-num { font-family: var(--font-mono); font-size: 13px; color: var(--graphite); padding-top: 2px; }
.md-before-h { font-size: 17px; font-weight: 600; margin-bottom: 6px; }

/* Prompt code block */
.md-prompt { background: var(--ink); border-radius: 4px; overflow: hidden; margin: 8px 0 24px; }
.md-prompt-head { display: flex; align-items: center; justify-content: space-between; padding: 10px 14px; border-bottom: 1px solid rgba(246,244,239,0.14); }
.md-prompt-label { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--warm-400); }
.md-copy { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--cream); background: rgba(246,244,239,0.12); border: 0; border-radius: 2px; padding: 6px 12px; cursor: pointer; transition: background var(--dur-fast) var(--ease-out); }
.md-copy:hover { background: rgba(246,244,239,0.22); }
.md-prompt-body { font-family: var(--font-mono); font-size: 14px; line-height: 1.6; color: var(--cream); padding: 16px; margin: 0; white-space: pre-wrap; word-break: break-word; }

/* Debrief */
.md-debrief-row { display: flex; gap: 12px; align-items: flex-start; font-size: 16px; line-height: 1.55; color: var(--warm-800); padding: 10px 0; border-top: 1px solid var(--border); max-width: 64ch; }
.md-debrief-dot { width: 6px; height: 6px; background: var(--graphite); border-radius: 50%; margin-top: 9px; flex-shrink: 0; }

/* Why */
.md-why { margin: 44px 0 0; padding: 28px; background: var(--cream-2); border-radius: 4px; }
.md-why-p { font-size: 17px; line-height: 1.6; color: var(--warm-800); margin: 10px 0 0; max-width: 60ch; }

/* Done + prev/next */
.md-done-row { margin: 48px 0 40px; }
.md-prevnext { display: flex; justify-content: space-between; gap: 24px; border-top: 1px solid var(--border); padding-top: 28px; }
.md-pn { display: flex; flex-direction: column; gap: 4px; text-decoration: none; border-bottom: 0; max-width: 45%; }
.md-pn-next { text-align: right; }
.md-pn-dir { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--warm-500); }
.md-pn-name { font-size: 16px; font-weight: 500; color: var(--ink); }
.md-pn:hover .md-pn-name { color: var(--graphite); }

/* Floating help pill */
.md-help-pill { position: fixed; right: 24px; bottom: 24px; z-index: 50; font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.1em; text-transform: uppercase; background: var(--ink); color: var(--cream); border: 0; border-radius: 999px; padding: 14px 22px; cursor: pointer; box-shadow: var(--shadow-3); transition: background var(--dur-base) var(--ease-out); }
.md-help-pill:hover { background: var(--warm-800); }

/* Files */
.md-file-list { border: 1px solid var(--border); border-radius: 4px; overflow: hidden; margin-top: 36px; }
.md-file-row { display: grid; grid-template-columns: minmax(140px, auto) 1fr 24px; gap: 20px; align-items: center; padding: 22px 24px; text-decoration: none; border-bottom: 1px solid var(--border); color: var(--ink); transition: background var(--dur-base) var(--ease-out); }
.md-file-row:last-child { border-bottom: 0; }
.md-file-row:hover { background: var(--cream-2); opacity: 1; }
.md-file-name { font-family: var(--font-mono); font-size: 14px; color: var(--ink); }
.md-file-desc { font-size: 15px; color: var(--warm-700); }
.md-file-dl { color: var(--graphite); font-size: 18px; text-align: right; }

/* Help cards */
.md-help-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 36px; }
.md-help-card { display: flex; flex-direction: column; gap: 8px; text-align: left; background: var(--bg-elev); border: 1px solid var(--border); border-radius: 4px; padding: 24px; cursor: pointer; transition: border-color var(--dur-base) var(--ease-out), background var(--dur-base) var(--ease-out); }
.md-help-card:hover { border-color: var(--border-strong); background: var(--cream-2); }
.md-help-h { font-size: 18px; font-weight: 600; }
.md-help-p { font-size: 15px; line-height: 1.55; color: var(--warm-700); }
.md-help-go { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--graphite); margin-top: 8px; }

/* Prose (legal) */
.md-prose p { font-size: 17px; line-height: 1.7; color: var(--warm-800); margin: 0 0 18px; max-width: 64ch; }
.md-prose .md-h2 { color: var(--ink); font-family: var(--font-sans); text-transform: none; font-size: 22px; letter-spacing: -0.01em; }

/* O Guia (onboarding de setup) */
.md-guide { max-width: 760px; }
.md-guide-checklist { display: flex; flex-direction: column; align-items: flex-end; gap: 8px; margin: 28px 0; }
.md-guide-chip { font-size: 14px; color: var(--warm-700); background: var(--cream-2); border: 1px solid var(--border); border-radius: 999px; padding: 8px 16px; }
.md-guide-step { margin-top: 28px; padding-top: 28px; border-top: 1px solid var(--border); }
.md-guide-num { font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.12em; color: var(--graphite); margin-bottom: 8px; }
.md-guide-h { font-size: 24px; font-weight: 600; letter-spacing: -0.02em; margin: 0 0 12px; }
.md-guide-q { font-size: 15px; color: var(--warm-600); margin: 18px 0 14px; }
.md-guide-btns { display: flex; gap: 14px; align-items: center; flex-wrap: wrap; }
.md-guide-help { font-family: var(--font-sans); font-size: 14px; font-weight: 500; color: var(--ink); background: transparent; border: 1px solid var(--border-strong); border-radius: 2px; padding: 13px 22px; cursor: pointer; transition: background var(--dur-base) var(--ease-out); }
.md-guide-help:hover { background: var(--cream-2); }

/* Chat de ajuda */
.md-chat { max-width: 760px; }
.md-os { margin-top: 28px; }
.md-os-q { font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--graphite); margin-bottom: 14px; }
.md-os-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.md-os-btn { display: flex; flex-direction: column; gap: 4px; text-align: left; background: var(--bg-elev); border: 1px solid var(--border); border-radius: 4px; padding: 20px; cursor: pointer; transition: border-color var(--dur-base) var(--ease-out), background var(--dur-base) var(--ease-out); }
.md-os-btn:hover { border-color: var(--border-strong); background: var(--cream-2); }
.md-os-h { font-size: 17px; font-weight: 600; color: var(--ink); }
.md-os-sub { font-size: 13px; color: var(--warm-500); font-family: var(--font-mono); }
.md-chat-log { display: flex; flex-direction: column; gap: 12px; margin: 28px 0 20px; min-height: 80px; }
.md-msg { font-size: 16px; line-height: 1.55; padding: 14px 18px; border-radius: 10px; max-width: 85%; white-space: pre-wrap; }
.md-msg-user { align-self: flex-end; background: var(--ink); color: var(--cream); border-bottom-right-radius: 2px; }
.md-msg-assistant { align-self: flex-start; background: var(--cream-2); color: var(--warm-900); border: 1px solid var(--border); border-bottom-left-radius: 2px; }
.md-msg-loading { color: var(--warm-500); font-style: italic; }
.md-chat-contact { align-self: flex-start; margin-top: 4px; }
.md-back-checks { align-self: flex-start; margin-top: 4px; font-family: var(--font-sans); font-size: 14px; font-weight: 500; color: var(--ink); background: transparent; border: 1px solid var(--border-strong); border-radius: 2px; padding: 11px 20px; cursor: pointer; transition: background var(--dur-base) var(--ease-out); }
.md-back-checks:hover { background: var(--cream-2); }
.md-chips { margin: 8px 0 18px; }
.md-chips-label { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--warm-500); margin-bottom: 10px; }
.md-chip { display: block; width: 100%; text-align: left; background: var(--bg-elev); border: 1px solid var(--border); border-radius: 4px; padding: 13px 16px; margin-bottom: 8px; font-size: 15px; color: var(--warm-800); cursor: pointer; transition: border-color var(--dur-base) var(--ease-out), background var(--dur-base) var(--ease-out); }
.md-chip:hover { border-color: var(--border-strong); background: var(--cream-2); }
.md-composer { display: flex; gap: 12px; align-items: flex-end; }
.md-composer-input { flex: 1; resize: vertical; font-family: var(--font-sans); font-size: 16px; line-height: 1.5; color: var(--ink); background: var(--bg-elev); border: 1px solid var(--border-strong); border-radius: 4px; padding: 12px 14px; outline: none; transition: border-color var(--dur-base) var(--ease-out), box-shadow var(--dur-base) var(--ease-out); }
.md-composer-input:focus { border-color: var(--ink); box-shadow: var(--shadow-focus); }
.md-composer .md-btn { flex-shrink: 0; }
.md-composer .md-btn[disabled] { opacity: 0.4; cursor: not-allowed; }
.md-chat-disc { font-size: 12px; color: var(--warm-500); margin: 14px 0 0; }
@media (max-width: 560px) {
  .md-os-row { grid-template-columns: 1fr; }
  .md-msg { max-width: 100%; }
  .md-composer { flex-direction: column; align-items: stretch; }
}

/* Footer */
.md-foot { margin-top: auto; border-top: 1px solid var(--border); padding: 40px 0 48px; background: var(--cream); }
.md-disclaimer { font-size: 13px; line-height: 1.6; color: var(--warm-500); max-width: 80ch; margin: 0 0 28px; }
.md-foot-row { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding-top: 24px; border-top: 1px solid var(--border); }
.md-foot-links { display: flex; gap: 24px; }
.md-foot-links a { font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--warm-600); text-decoration: none; border-bottom: 0; }
.md-foot-links a:hover { color: var(--ink); }

/* Responsive */
@media (max-width: 820px) {
  .md-home-grid { grid-template-columns: 1fr; gap: 32px; }
  .md-help-cards { grid-template-columns: 1fr; }
  .md-topnav-links { gap: 18px; }
}
@media (max-width: 560px) {
  .md-section { padding: 32px 20px 80px; }
  .md-ex-row { grid-template-columns: 36px 1fr auto; gap: 12px; padding: 18px 18px; }
  .md-ex-chev { display: none; }
  .md-ex-name { font-size: 16px; }
  .md-file-row { grid-template-columns: 1fr 24px; gap: 6px; }
  .md-prevnext { flex-direction: column; gap: 20px; }
  .md-pn, .md-pn-next { max-width: 100%; text-align: left; }
  .md-foot-row { flex-direction: column; align-items: flex-start; gap: 16px; }
  .md-help-pill { right: 16px; bottom: 16px; }
}