/* India SMS DLT Template Validator — shared stylesheet */

:root {
  --ink: #0f1a2b;
  --ink-soft: #445064;
  --bg: #f6f8fb;
  --card: #ffffff;
  --border: #e2e8f0;
  --brand: #155e75;
  --brand-dark: #0e4a5c;
  --brand-light: #ecf7fa;
  --accent: #0d9488;
  --ok: #0f8a4b;
  --ok-bg: #eafaf1;
  --bad: #c0362c;
  --bad-bg: #fdecea;
  --code-bg: #0f1a2b;
  --code-fg: #e6edf3;
  --radius: 10px;
  --max: 880px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
}

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

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 20px;
}

/* Header / nav */
.site-header {
  background: var(--brand-dark);
  color: #fff;
  padding: 14px 0;
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.05rem;
  color: #fff;
}
.brand:hover { text-decoration: none; opacity: 0.9; }
.brand-badge {
  background: var(--accent);
  color: #06251f;
  font-weight: 800;
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  padding: 3px 7px;
  border-radius: 5px;
}
nav.site-nav { display: flex; gap: 18px; flex-wrap: wrap; }
nav.site-nav a {
  color: #cfe8ee;
  font-size: 0.92rem;
  font-weight: 500;
}
nav.site-nav a:hover { color: #fff; }

/* Hero */
.hero {
  padding: 40px 0 12px;
}
.hero h1 {
  font-size: clamp(1.6rem, 3.4vw, 2.3rem);
  margin: 0 0 10px;
  letter-spacing: -0.01em;
}
.hero p.lead {
  color: var(--ink-soft);
  font-size: 1.05rem;
  max-width: 68ch;
  margin: 0 0 6px;
}
.badge-row { display: flex; gap: 8px; flex-wrap: wrap; margin: 14px 0 0; }
.pill {
  display: inline-block;
  background: var(--brand-light);
  color: var(--brand-dark);
  border: 1px solid #cfe4ea;
  font-size: 0.78rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 999px;
}

/* Tool card */
.tool-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  margin: 26px 0;
  box-shadow: 0 1px 2px rgba(15, 26, 43, 0.04);
}
.field { margin-bottom: 16px; }
.field label {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 6px;
  color: var(--ink);
}
.field .hint {
  font-weight: 400;
  color: var(--ink-soft);
  font-size: 0.8rem;
}
textarea, input[type="text"] {
  width: 100%;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 0.92rem;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fbfcfe;
  color: var(--ink);
  resize: vertical;
}
textarea:focus, input[type="text"]:focus {
  outline: 2px solid var(--brand);
  outline-offset: 1px;
  background: #fff;
}
textarea { min-height: 92px; }

.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
@media (max-width: 700px) {
  .two-col { grid-template-columns: 1fr; }
}

details.advanced {
  margin: 6px 0 18px;
  border: 1px dashed var(--border);
  border-radius: 8px;
  padding: 10px 14px;
}
details.advanced summary {
  cursor: pointer;
  font-weight: 600;
  font-size: 0.88rem;
  color: var(--brand-dark);
}
details.advanced .two-col { margin-top: 12px; }

.btn {
  appearance: none;
  border: none;
  background: var(--brand);
  color: #fff;
  font-weight: 700;
  font-size: 0.98rem;
  padding: 11px 22px;
  border-radius: 8px;
  cursor: pointer;
}
.btn:hover { background: var(--brand-dark); }
.btn.secondary {
  background: transparent;
  color: var(--brand-dark);
  border: 1px solid var(--border);
}
.btn.secondary:hover { background: var(--brand-light); }

/* Results */
#result-panel { margin-top: 20px; }
.checklist {
  list-style: none;
  margin: 0 0 14px;
  padding: 0;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 0.92rem;
}
.checklist li {
  display: flex;
  gap: 10px;
  padding: 6px 0;
  border-bottom: 1px solid #f0f2f6;
}
.checklist li:last-child { border-bottom: none; }
.mark { font-weight: 800; width: 1.1em; flex: none; }
.checklist li.pass .mark { color: var(--ok); }
.checklist li.fail .mark { color: var(--bad); }
.checklist li.info .mark { color: var(--brand); }

.result-banner {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 800;
  font-size: 1rem;
  padding: 10px 16px;
  border-radius: 8px;
  margin-top: 4px;
}
.result-banner.valid { background: var(--ok-bg); color: var(--ok); }
.result-banner.invalid { background: var(--bad-bg); color: var(--bad); }

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 10px;
  margin: 16px 0;
}
.stat {
  background: var(--brand-light);
  border: 1px solid #d9ecf1;
  border-radius: 8px;
  padding: 10px 12px;
}
.stat .num { font-size: 1.25rem; font-weight: 800; color: var(--brand-dark); }
.stat .label { font-size: 0.76rem; color: var(--ink-soft); text-transform: uppercase; letter-spacing: 0.03em; }

.meta-note {
  font-size: 0.82rem;
  color: var(--ink-soft);
  background: #fbf8ec;
  border: 1px solid #eee0b0;
  border-radius: 8px;
  padding: 10px 12px;
  margin-top: 10px;
}

/* Callout / backlink box */
.callout {
  background: linear-gradient(135deg, #eafaf7, #ecf7fa);
  border: 1px solid #cdeee6;
  border-radius: var(--radius);
  padding: 18px 20px;
  margin: 28px 0;
}
.callout h3 { margin: 0 0 6px; font-size: 1.02rem; }
.callout p { margin: 0; color: var(--ink-soft); }
.callout a.cta {
  display: inline-block;
  margin-top: 10px;
  font-weight: 700;
  color: var(--brand-dark);
}

/* Content sections */
.content h2 {
  font-size: 1.35rem;
  margin: 38px 0 12px;
  padding-top: 6px;
  border-top: 1px solid var(--border);
}
.content h3 { font-size: 1.08rem; margin: 22px 0 8px; }
.content p, .content li { color: var(--ink-soft); }
.content ol, .content ul { padding-left: 22px; }
.content code {
  background: #eef1f6;
  border-radius: 4px;
  padding: 1px 6px;
  font-size: 0.88em;
}
.content pre {
  background: var(--code-bg);
  color: var(--code-fg);
  padding: 14px 16px;
  border-radius: 8px;
  overflow-x: auto;
  font-size: 0.86rem;
}
.content table {
  width: 100%;
  border-collapse: collapse;
  margin: 14px 0;
  font-size: 0.92rem;
}
.content th, .content td {
  border: 1px solid var(--border);
  padding: 8px 10px;
  text-align: left;
}
.content th { background: #f1f5f9; }

.source-note {
  font-size: 0.82rem;
  color: #6b7688;
  margin-top: 6px;
}

/* FAQ */
.faq-item {
  border-bottom: 1px solid var(--border);
  padding: 16px 0;
}
.faq-item h3 { margin: 0 0 8px; font-size: 1.02rem; }
.faq-item p { margin: 0; }

/* Breadcrumb */
.breadcrumb {
  font-size: 0.82rem;
  color: var(--ink-soft);
  margin: 16px 0 0;
}
.breadcrumb a { color: var(--ink-soft); }

/* Footer */
footer.site-footer {
  margin-top: 60px;
  border-top: 1px solid var(--border);
  background: #eef2f7;
  padding: 30px 0;
  font-size: 0.86rem;
  color: var(--ink-soft);
}
footer.site-footer .cols {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 20px;
}
@media (max-width: 700px) {
  footer.site-footer .cols { grid-template-columns: 1fr; }
}
footer.site-footer h4 {
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--ink);
  margin: 0 0 10px;
}
footer.site-footer ul { list-style: none; padding: 0; margin: 0; }
footer.site-footer li { margin-bottom: 6px; }
footer.site-footer .disclaimer {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid #dde4ec;
  font-size: 0.78rem;
}

main { display: block; padding-bottom: 20px; }