/* ================================================================
   MCP Skills — Shared Stylesheet
   All pages link this file. Page-specific CSS stays inline.
   ================================================================ */

/* --- RESET ---------------------------------------------------- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

/* --- DESIGN TOKENS -------------------------------------------- */
:root {
  /* Palette */
  --bg:        #0A0E14;
  --surface:   #12171E;
  --surface2:  #1A2029;
  --border:    #252D38;
  --border-lt: #333D4A;

  --text:   #E8ECF1;
  --text2:  #8D95A0;
  --text3:  #5E6773;

  --green:    #34D399;
  --green-bg: rgba(52,211,153,0.10);
  --amber:    #FBBF24;
  --amber-bg: rgba(251,191,36,0.10);
  --blue:     #60A5FA;
  --blue-bg:  rgba(96,165,250,0.10);
  --red:      #F87171;
  --red-bg:   rgba(248,113,113,0.10);
  --purple:   #A78BFA;
  --purple-bg:rgba(167,139,250,0.10);
  --gold:     #D97706;

  /* Spacing (8px base) */
  --sp-1: 4px;  --sp-2: 8px;  --sp-3: 12px;
  --sp-4: 16px; --sp-5: 24px; --sp-6: 32px;
  --sp-7: 48px; --sp-8: 64px; --sp-9: 96px;

  /* Typography */
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --mono: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
}

/* --- BASE ----------------------------------------------------- */
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }

.container { max-width: 740px; margin: 0 auto; padding: 0 var(--sp-5); }

.icon-svg { display: inline-block; vertical-align: middle; flex-shrink: 0; }

/* --- FOCUS & INTERACTION -------------------------------------- */
:focus-visible {
  outline: 2px solid var(--green);
  outline-offset: 2px;
}
input:focus-visible, textarea:focus-visible, select:focus-visible {
  outline: none;
  border-color: var(--green);
  box-shadow: 0 0 0 3px rgba(52,211,153,0.12);
}
button { font-family: var(--font); }
button:not(:disabled) { cursor: pointer; }

/* --- KEYFRAMES ------------------------------------------------ */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes spin { to { transform: rotate(360deg); } }

/* --- NAV ------------------------------------------------------ */
nav {
  padding: var(--sp-4) 0;
  border-bottom: 1px solid var(--border);
  position: relative; z-index: 10;
}
.nav-inner {
  display: flex; justify-content: space-between; align-items: center;
}
.logo {
  display: flex; align-items: center; gap: var(--sp-2);
  font-size: 1.05rem; font-weight: 700; color: var(--text);
  text-decoration: none; letter-spacing: -0.02em;
}
.logo:hover { text-decoration: none; }
.logo-mark {
  width: 28px; height: 28px; border-radius: 6px;
  background: linear-gradient(135deg, var(--green), #059669);
  display: flex; align-items: center; justify-content: center;
}
.logo-mark svg { width: 16px; height: 16px; }
.nav-links { display: flex; gap: var(--sp-5); }
.nav-links a {
  color: var(--text2); text-decoration: none;
  font-size: 0.85rem; font-weight: 500;
  transition: color 0.15s;
}
.nav-links a:hover { color: var(--text); text-decoration: none; }

/* --- FOOTER --------------------------------------------------- */
footer {
  padding: var(--sp-7) 0 var(--sp-6);
  border-top: 1px solid var(--border);
}
.footer-inner {
  display: grid; grid-template-columns: 2fr 1fr 1fr;
  gap: var(--sp-6);
}
.footer-brand .logo { margin-bottom: var(--sp-3); }
.footer-brand p { font-size: 0.78rem; color: var(--text3); max-width: 260px; line-height: 1.6; }
.footer-col h4 {
  font-size: 0.72rem; font-weight: 600; color: var(--text3);
  text-transform: uppercase; letter-spacing: 0.08em;
  margin-bottom: var(--sp-3);
}
.footer-col a {
  display: block; color: var(--text2); text-decoration: none;
  font-size: 0.82rem; padding: 3px 0;
  transition: color 0.15s;
}
.footer-col a:hover { color: var(--text); text-decoration: none; }
.footer-copy {
  margin-top: var(--sp-6); padding-top: var(--sp-4);
  border-top: 1px solid var(--border);
  font-size: 0.72rem; color: var(--text3);
}
.footer-copy a { color: var(--text2); text-decoration: none; }
.footer-copy a:hover { color: var(--text); }

/* Simple footer (used on content pages) */
.footer-simple {
  padding: var(--sp-6) 0;
  border-top: 1px solid var(--border);
  text-align: center;
}
.footer-simple p { font-size: 0.78rem; color: var(--text3); }
.footer-simple a { color: var(--text2); text-decoration: none; }
.footer-simple a:hover { color: var(--text); }

@media (max-width: 600px) {
  .footer-inner { grid-template-columns: 1fr; gap: var(--sp-5); }
}

/* --- CONTENT PAGES (privacy, terms, blog articles) ------------ */
.content { padding: var(--sp-7) 0 var(--sp-8); }
.content h1 { font-size: 1.8rem; font-weight: 700; margin-bottom: var(--sp-2); letter-spacing: -0.02em; }
.content .updated { font-size: 0.82rem; color: var(--text3); margin-bottom: var(--sp-6); }
.content h2 { font-size: 1.1rem; font-weight: 600; margin: 28px 0 10px; color: var(--text); }
.content h3 { font-size: 1rem; font-weight: 600; margin: 24px 0 8px; color: var(--text); }
.content p { font-size: 0.88rem; color: var(--text2); margin-bottom: 12px; line-height: 1.7; }
.content ul, .content ol { margin-bottom: 12px; padding-left: 0; list-style: none; }
.content li {
  font-size: 0.85rem; color: var(--text2); padding: 3px 0 3px 16px;
  position: relative;
}
.content li::before { content: '\2013'; position: absolute; left: 0; color: var(--text3); }
.content a { color: var(--blue); }
.content a:hover { text-decoration: underline; }
.content blockquote {
  border-left: 3px solid var(--border-lt);
  padding: var(--sp-3) var(--sp-4);
  margin: var(--sp-4) 0;
  color: var(--text2); font-size: 0.88rem;
  background: var(--surface);
  border-radius: 0 8px 8px 0;
}
.content code {
  font-family: var(--mono); font-size: 0.82rem;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 4px; padding: 2px 6px;
}
.content pre {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 8px; padding: var(--sp-4);
  overflow-x: auto; margin-bottom: var(--sp-4);
}
.content pre code { background: none; border: none; padding: 0; }

/* --- ARTICLE PAGES -------------------------------------------- */
article { padding: var(--sp-7) 0 var(--sp-8); }
article h1 {
  font-size: 2rem; font-weight: 700;
  margin-bottom: var(--sp-3); letter-spacing: -0.03em; line-height: 1.2;
}
article .meta { font-size: 0.82rem; color: var(--text3); margin-bottom: var(--sp-6); }
article .meta a { color: var(--blue); text-decoration: none; }
article h2 { font-size: 1.2rem; font-weight: 700; margin: var(--sp-6) 0 var(--sp-3); color: var(--text); }
article h3 { font-size: 1rem; font-weight: 600; margin: var(--sp-5) 0 var(--sp-2); color: var(--text); }
article p { font-size: 0.9rem; color: var(--text2); margin-bottom: var(--sp-4); line-height: 1.75; }
article ul, article ol { margin-bottom: var(--sp-4); padding-left: 0; list-style: none; }
article li {
  font-size: 0.88rem; color: var(--text2); padding: 4px 0 4px 18px;
  position: relative; line-height: 1.65;
}
article li::before { content: '\2013'; position: absolute; left: 0; color: var(--text3); }
article a { color: var(--blue); }
article blockquote {
  border-left: 3px solid var(--green);
  padding: var(--sp-3) var(--sp-4);
  margin: var(--sp-4) 0;
  background: var(--surface);
  border-radius: 0 8px 8px 0;
  font-size: 0.88rem; color: var(--text2);
}
article code {
  font-family: var(--mono); font-size: 0.82rem;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 4px; padding: 2px 6px;
}
article pre {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 8px; padding: var(--sp-4);
  overflow-x: auto; margin-bottom: var(--sp-4);
}
article pre code { background: none; border: none; padding: 0; }

/* Article cards (score tables, findings, etc.) */
.score-table {
  width: 100%; border-collapse: collapse;
  margin: var(--sp-4) 0;
}
.score-table th, .score-table td {
  text-align: left; padding: 8px 12px;
  border-bottom: 1px solid var(--border);
  font-size: 0.82rem;
}
.score-table th {
  color: var(--text3); font-weight: 600; font-size: 0.72rem;
  text-transform: uppercase; letter-spacing: 0.05em;
}
.score-table td { color: var(--text2); }

.callout-box {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 10px; padding: var(--sp-5);
  margin: var(--sp-5) 0;
}
.callout-box h3 {
  font-size: 0.92rem; margin: 0 0 var(--sp-2) 0;
}

/* Article CTA */
.article-cta {
  background: var(--surface); border: 1px solid var(--green);
  border-radius: 10px; padding: var(--sp-5); margin: var(--sp-6) 0;
  text-align: center;
}
.article-cta h3 { font-size: 1rem; margin-bottom: var(--sp-2); }
.article-cta p { font-size: 0.85rem; color: var(--text2); margin-bottom: var(--sp-4); }
.article-cta a.cta-btn {
  display: inline-block; padding: 10px 28px;
  background: var(--green); color: var(--bg);
  border-radius: 8px; font-weight: 600; font-size: 0.9rem;
  text-decoration: none; transition: transform 0.15s, box-shadow 0.15s;
}
.article-cta a.cta-btn:hover { transform: translateY(-1px); box-shadow: 0 4px 12px rgba(52,211,153,0.25); text-decoration: none; }
.article-cta a.cta-btn:active { transform: translateY(0); box-shadow: none; }

/* Article components — reusable across blog pages */
.comparison { display: grid; grid-template-columns: 1fr 1fr; gap: var(--sp-4); margin: var(--sp-5) 0; }
.comparison-box {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 10px; padding: 20px;
}
.comparison-box h3 { font-size: 0.9rem; font-weight: 600; margin-bottom: var(--sp-2); }
.comparison-box p { font-size: 0.82rem; margin-bottom: 6px; }
.comparison-good { border-color: var(--green); }
.comparison-bad { border-color: var(--red); }

.step {
  display: flex; gap: var(--sp-4); margin: var(--sp-5) 0;
  padding: 20px; background: var(--surface);
  border: 1px solid var(--border); border-radius: 10px;
}
.step-num {
  background: var(--green); color: var(--bg);
  width: 32px; height: 32px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 0.85rem; flex-shrink: 0;
}
.step-content h3 { font-size: 1rem; font-weight: 600; margin-bottom: 6px; }
.step-content p { font-size: 0.88rem; margin-bottom: 8px; }
.step-content code {
  background: var(--blue-bg); color: var(--blue);
  padding: 2px 6px; border-radius: 4px; font-size: 0.82rem;
}

.warning-box {
  background: var(--red-bg); border: 1px solid var(--red);
  border-radius: 10px; padding: 20px; margin: var(--sp-5) 0;
}
.warning-box h3 { color: var(--red); font-size: 0.95rem; margin-bottom: var(--sp-2); }
.warning-box p { font-size: 0.85rem; }
.warning-box ul { list-style: none; margin: var(--sp-2) 0; }
.warning-box li {
  font-size: 0.85rem; color: var(--text2);
  padding: 3px 0 3px 20px; position: relative;
}
.warning-box li::before { content: '\26A0'; position: absolute; left: 0; }

.tip-box {
  background: var(--green-bg); border: 1px solid var(--green);
  border-radius: 10px; padding: 20px; margin: var(--sp-5) 0;
}
.tip-box h3 { color: var(--green); font-size: 0.95rem; margin-bottom: var(--sp-2); }
.tip-box p { font-size: 0.85rem; }

.faq { margin: var(--sp-5) 0; }
.faq-item { border-bottom: 1px solid var(--border); padding: var(--sp-4) 0; }
.faq-q { font-size: 0.92rem; font-weight: 600; color: var(--text); margin-bottom: 6px; }
.faq-a { font-size: 0.85rem; color: var(--text2); }

.tier-table { width: 100%; border-collapse: collapse; margin: var(--sp-5) 0; font-size: 0.85rem; }
.tier-table th {
  text-align: left; padding: 10px 12px;
  border-bottom: 2px solid var(--border); color: var(--text); font-weight: 600;
}
.tier-table td { padding: 10px 12px; border-bottom: 1px solid var(--border); color: var(--text2); }

@media (max-width: 600px) {
  .comparison { grid-template-columns: 1fr; }
  .step { flex-direction: column; }
}

/* --- FORMS (certify, etc.) ------------------------------------ */
.form-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 10px; padding: var(--sp-5); margin: var(--sp-5) 0;
}
.form-card h3 { font-size: 1rem; margin-bottom: var(--sp-4); }
.form-row { margin-bottom: var(--sp-3); }
.form-row label {
  display: block; font-size: 0.82rem;
  color: var(--text2); margin-bottom: 4px;
}
.form-row input, .form-row textarea, .form-row select {
  width: 100%; padding: 10px 14px;
  border-radius: 8px; border: 1px solid var(--border);
  background: var(--bg); color: var(--text);
  font-size: 0.9rem; font-family: var(--font);
  outline: none; transition: border-color 0.2s;
}
.form-row input:focus, .form-row textarea:focus {
  border-color: var(--green);
  box-shadow: 0 0 0 3px rgba(52,211,153,0.12);
}
.form-btn {
  width: 100%; padding: 12px; border: none;
  border-radius: 8px; font-weight: 600; font-size: 0.92rem;
  cursor: pointer; font-family: var(--font);
  transition: transform 0.15s, box-shadow 0.15s, opacity 0.15s;
}
.form-btn:hover { transform: translateY(-1px); box-shadow: 0 4px 12px rgba(0,0,0,0.2); }
.form-btn:active { transform: translateY(0); box-shadow: none; }
.form-btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none; box-shadow: none; }
.form-btn-green { background: var(--green); color: var(--bg); }
.form-btn-gold  { background: var(--gold);  color: white; }

/* Requirements list (certify page) */
.req-list { margin: var(--sp-4) 0; }
.req-item {
  display: flex; align-items: center; gap: 8px;
  padding: 6px 0; font-size: 0.88rem; color: var(--text2);
}
.req-check { width: 20px; text-align: center; flex-shrink: 0; }

/* --- ERROR ---------------------------------------------------- */
.error-msg {
  background: var(--red-bg); border: 1px solid rgba(248,113,113,0.15);
  border-radius: 8px; padding: 12px 16px; margin-top: 16px;
  color: var(--red); font-size: 0.85rem;
}

/* --- RESPONSIVE ----------------------------------------------- */
@media (max-width: 600px) {
  .container { padding: 0 var(--sp-4); }
  article h1 { font-size: 1.5rem; }
  .content h1 { font-size: 1.4rem; }
}