/* RFOB AI Use Case Repository — brand + component styles.
 * Amphenol / RFOB visual system. NOT RFST colours.
 *   corporate blue #25509D (PMS 7685C) · deep navy #16305c · accent #005cb9
 *   headings Archivo · body IBM Plex Sans
 * Fonts are pulled from Google Fonts in dev; deploy/vendor-assets.sh self-hosts
 * them so production ships no third-party CDN dependency.
 */

:root {
  --amp-blue:   #25509D;
  --amp-navy:   #16305c;
  --amp-accent: #005cb9;
  --amp-sky:    #e8eef7;
  --ink:        #1c2432;
  --ink-soft:   #52607a;
  --line:       #dbe2ee;
  --bg:         #f5f7fb;
  --card:       #ffffff;
  --ok:         #1b8a5a;   /* production */
  --pilot:      #b7791f;   /* piloting */
  --idea:       #6b6f76;   /* idea */
  --radius:     12px;
  --shadow:     0 1px 2px rgba(22,48,92,.06), 0 6px 20px rgba(22,48,92,.06);
  --font-head:  'Archivo', system-ui, sans-serif;
  --font-body:  'IBM Plex Sans', system-ui, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 { font-family: var(--font-head); font-weight: 700; letter-spacing: -.01em; color: var(--amp-navy); margin: 0 0 .4em; }
a { color: var(--amp-accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---------------------------------------------------------------- header */
.site-header {
  background: linear-gradient(120deg, var(--amp-navy) 0%, var(--amp-blue) 100%);
  color: #fff;
  padding: 0;
}
.site-header .bar {
  max-width: 1160px; margin: 0 auto; padding: 16px 24px;
  display: flex; align-items: center; gap: 16px;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand .mark {
  width: 34px; height: 34px; border-radius: 8px; flex: none;
  background: #fff; color: var(--amp-blue);
  display: grid; place-items: center; font-family: var(--font-head); font-weight: 800; font-size: 18px;
}
.brand .title { font-family: var(--font-head); font-weight: 700; font-size: 17px; color: #fff; line-height: 1.1; }
.brand .sub { font-size: 12px; color: #b9c9e6; }
.site-header nav { margin-left: auto; display: flex; align-items: center; gap: 18px; }
.site-header nav a { color: #dbe6f7; font-weight: 500; font-size: 14px; }
.site-header nav a:hover { color: #fff; text-decoration: none; }
.btn-primary {
  background: #fff; color: var(--amp-blue); border: none; border-radius: 8px;
  padding: 9px 16px; font: 600 14px var(--font-body); cursor: pointer;
}
.btn-primary:hover { background: var(--amp-sky); text-decoration: none; }
.who { font-size: 13px; color: #cdd9ee; }

/* ----------------------------------------------------------------- layout */
.wrap { max-width: 1160px; margin: 0 auto; padding: 28px 24px 64px; }
.dev-banner {
  background: #fff4d6; color: #7a5a00; border: 1px solid #f0d98a;
  border-radius: 8px; padding: 8px 14px; font-size: 13px; margin: 0 0 18px;
}
.page-intro { margin-bottom: 22px; }
.page-intro h1 { font-size: 28px; }
.page-intro p { color: var(--ink-soft); margin: 0; max-width: 70ch; }

/* -------------------------------------------------------------- stat tiles */
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 14px; margin: 0 0 26px; }
.tile {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 16px 18px; box-shadow: var(--shadow);
}
.tile .n { font-family: var(--font-head); font-weight: 800; font-size: 30px; color: var(--amp-blue); line-height: 1; }
.tile .l { font-size: 12.5px; color: var(--ink-soft); margin-top: 6px; text-transform: uppercase; letter-spacing: .04em; }

/* ---------------------------------------------------------------- filters */
.filters { display: flex; flex-wrap: wrap; gap: 10px; margin: 0 0 22px; align-items: center; }
.filters input, .filters select {
  font: 14px var(--font-body); color: var(--ink);
  border: 1px solid var(--line); border-radius: 8px; padding: 9px 12px; background: #fff;
}
.filters input[type=search] { flex: 1 1 240px; min-width: 200px; }
.filters .count { margin-left: auto; color: var(--ink-soft); font-size: 13px; }

/* ------------------------------------------------------------------ cards */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 16px; }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 18px 20px; box-shadow: var(--shadow); display: flex; flex-direction: column;
  transition: transform .12s ease, box-shadow .12s ease;
}
.card:hover { transform: translateY(-2px); box-shadow: 0 4px 8px rgba(22,48,92,.08), 0 14px 34px rgba(22,48,92,.10); text-decoration: none; }
.card .co { font-size: 12.5px; color: var(--amp-accent); font-weight: 600; }
.card h3 { font-size: 17px; margin: 4px 0 8px; color: var(--amp-navy); }
.card p { margin: 0 0 14px; color: var(--ink-soft); font-size: 14px; flex: 1; }
.card .meta { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }

/* status + tag pills */
.pill { font-size: 11.5px; font-weight: 600; padding: 3px 9px; border-radius: 999px; letter-spacing: .02em; }
.pill.production { background: #e5f4ec; color: var(--ok); }
.pill.piloting   { background: #fbf0da; color: var(--pilot); }
.pill.idea       { background: #eef0f3; color: var(--idea); }
.tag { font-size: 11.5px; color: var(--ink-soft); background: var(--amp-sky); padding: 3px 9px; border-radius: 999px; }

/* -------------------------------------------------------------- empty state */
.empty {
  text-align: center; padding: 70px 20px; color: var(--ink-soft);
  border: 1.5px dashed var(--line); border-radius: var(--radius); background: #fff;
}
.empty h2 { color: var(--ink); }

/* ------------------------------------------------------------------ detail */
.detail-head { display: flex; align-items: flex-start; gap: 16px; margin-bottom: 6px; }
.detail-head .co { color: var(--amp-accent); font-weight: 600; font-size: 14px; }
.detail-head h1 { font-size: 26px; margin: 2px 0 8px; }
.detail-actions { margin-left: auto; display: flex; gap: 8px; flex: none; }
.btn { border: 1px solid var(--line); background: #fff; color: var(--ink); border-radius: 8px; padding: 8px 14px; font: 600 13px var(--font-body); cursor: pointer; }
.btn:hover { border-color: var(--amp-blue); color: var(--amp-blue); }
.btn.danger:hover { border-color: #c0392b; color: #c0392b; }
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 22px; }
.panel { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px 24px; box-shadow: var(--shadow); }
.panel h2 { font-size: 13px; text-transform: uppercase; letter-spacing: .06em; color: var(--amp-blue); border-bottom: 1px solid var(--line); padding-bottom: 10px; margin-bottom: 16px; }
.field { margin-bottom: 16px; }
.field .k { font-size: 12px; text-transform: uppercase; letter-spacing: .04em; color: var(--ink-soft); margin-bottom: 3px; }
.field .v { font-size: 14.5px; color: var(--ink); white-space: pre-wrap; }
.field .v.empty-v { color: #aab2c0; font-style: italic; }

/* -------------------------------------------------------------------- form */
.form-card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 28px; box-shadow: var(--shadow); max-width: 900px; }
.form-section { border-top: 1px solid var(--line); margin-top: 26px; padding-top: 22px; }
.form-section:first-of-type { border-top: none; margin-top: 8px; padding-top: 0; }
.form-section .hint { color: var(--ink-soft); font-size: 13px; margin: -2px 0 18px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
label.f { display: block; margin-bottom: 16px; }
label.f .lab { display: block; font-size: 13px; font-weight: 600; color: var(--ink); margin-bottom: 5px; }
label.f .req { color: #c0392b; }
input.i, select.i, textarea.i {
  width: 100%; font: 14px var(--font-body); color: var(--ink);
  border: 1px solid var(--line); border-radius: 8px; padding: 10px 12px; background: #fff;
}
input.i:focus, select.i:focus, textarea.i:focus { outline: none; border-color: var(--amp-blue); box-shadow: 0 0 0 3px rgba(37,80,157,.12); }
textarea.i { resize: vertical; min-height: 84px; }
.form-actions { margin-top: 26px; display: flex; gap: 12px; align-items: center; }
.submit-btn { background: var(--amp-blue); color: #fff; border: none; border-radius: 8px; padding: 11px 22px; font: 600 15px var(--font-body); cursor: pointer; }
.submit-btn:hover { background: var(--amp-navy); }
.form-msg { font-size: 14px; }
.form-msg.err { color: #c0392b; }
.form-msg.ok { color: var(--ok); }

@media (max-width: 720px) {
  .two-col, .form-row { grid-template-columns: 1fr; }
  .site-header nav { gap: 12px; }
}

/* -------------------------------------------------------------- login page */
.login-shell { min-height: 100vh; display: grid; place-items: center; background: linear-gradient(135deg, var(--amp-navy), var(--amp-blue)); padding: 24px; }
.login-box { background: #fff; border-radius: 16px; padding: 40px 38px; max-width: 420px; width: 100%; box-shadow: 0 20px 60px rgba(10,25,55,.35); text-align: center; }
.login-box .mark { width: 52px; height: 52px; border-radius: 12px; margin: 0 auto 18px; background: var(--amp-blue); color: #fff; display: grid; place-items: center; font: 800 24px var(--font-head); }
.login-box h1 { font-size: 22px; }
.login-box p { color: var(--ink-soft); font-size: 14.5px; margin-bottom: 26px; }
.login-box .submit-btn { width: 100%; }