/* ===========================================================
   emAI — design tokens
   Concept: Emily's candidacy framed as an open service record,
   the visual language of her own professional world (ITSM).
   =========================================================== */

:root {
  --bg: #EEF2F8;
  --surface: #FFFFFF;
  --ink: #131B2C;
  --muted: #5B6478;
  --faint: #8993A8;
  --line: #DCE3EE;
  --header-bg: #B8E3E9;
  --accent: #2455D9;
  --accent-ink: #163D9E;
  --accent-soft: #E3EBFC;
  --accent-soft-line: #BFD2F7;
  --user-bubble: #0F1E3D;
  --user-bubble-ink: #EEF2F8;
  --radius: 10px;
  --radius-sm: 6px;
  --sans: 'IBM Plex Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --mono: 'IBM Plex Mono', 'SFMono-Regular', Consolas, monospace;
  --shadow: 0 1px 2px rgba(15, 30, 61, 0.06), 0 10px 28px rgba(15, 30, 61, 0.08);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--accent-ink);
  text-decoration: none;
  border-bottom: 1px solid var(--accent-soft-line);
}
a:hover { border-bottom-color: var(--accent-ink); }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
}

/* ---------- Topbar ---------- */
.topbar {
  background: var(--header-bg);
  border-bottom: 1px solid rgba(19, 27, 44, 0.08);
}
.topbar-inner {
  max-width: 760px;
  margin: 0 auto;
  padding: 20px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  font-size: 24px;
  letter-spacing: 0.01em;
  color: var(--ink);
}
.brand-icon {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
}
.topbar nav {
  display: flex;
  gap: 22px;
  font-family: var(--mono);
  font-size: 16px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.topbar nav a {
  color: var(--ink);
  border-bottom: none;
}
.topbar nav a:hover { color: var(--accent-ink); }

/* ---------- Layout ---------- */
main {
  max-width: 760px;
  margin: 0 auto;
  padding: 40px 24px 64px;
}

/* ---------- Record header (signature element) ---------- */
.record {
  background: var(--surface);
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
  padding: 22px 26px;
  margin-bottom: 28px;
  box-shadow: var(--shadow);
}
.record-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}
.record-id {
  font-family: var(--mono);
  font-size: 14px;
  color: var(--faint);
  letter-spacing: 0.03em;
}
.badge {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.03em;
  padding: 4px 10px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.badge-open {
  background: var(--accent-soft);
  color: var(--accent-ink);
  border: 1px solid var(--accent-soft-line);
}
.badge-open::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  display: inline-block;
}
.record h1 {
  font-size: 30px;
  margin: 0 0 8px;
  letter-spacing: -0.01em;
}
.record-sub {
  font-family: var(--mono);
  font-size: 14px;
  color: var(--muted);
  margin: 0;
}
.record-sub .sep { color: var(--line); margin: 0 8px; }

/* ---------- Chat card ---------- */
.chat-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px;
  box-shadow: var(--shadow);
}
.eyebrow {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent-ink);
  margin: 0 0 6px;
}
.chat-intro p:not(.eyebrow) {
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.5;
  max-width: 560px;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}
.chip {
  font-family: var(--sans);
  font-size: 15px;
  background: var(--bg);
  border: 1px solid var(--line);
  color: var(--ink);
  padding: 8px 14px;
  border-radius: 999px;
  cursor: pointer;
  transition: border-color 0.15s ease, background 0.15s ease;
}
.chip:hover {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.chat-window {
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--bg);
  padding: 16px;
  height: 360px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 14px;
}

.msg {
  max-width: 80%;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: 16px;
  line-height: 1.5;
  white-space: pre-wrap;
}
.msg-bot {
  align-self: flex-start;
  background: var(--surface);
  border: 1px solid var(--line);
  color: var(--ink);
}
.msg-user {
  align-self: flex-end;
  background: var(--user-bubble);
  color: var(--user-bubble-ink);
}
.msg-typing {
  align-self: flex-start;
  background: var(--surface);
  border: 1px solid var(--line);
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  display: flex;
  gap: 4px;
}
.msg-typing span {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--faint);
  animation: blink 1.2s infinite ease-in-out;
}
.msg-typing span:nth-child(2) { animation-delay: 0.2s; }
.msg-typing span:nth-child(3) { animation-delay: 0.4s; }
@keyframes blink { 0%, 80%, 100% { opacity: 0.25; } 40% { opacity: 1; } }

.chat-input {
  display: flex;
  gap: 10px;
}
.chat-input input {
  flex: 1;
  font-family: var(--sans);
  font-size: 16px;
  padding: 11px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--ink);
}
.chat-input input:focus { border-color: var(--accent); }
.chat-input button {
  font-family: var(--sans);
  font-weight: 600;
  font-size: 15px;
  padding: 11px 20px;
  border-radius: var(--radius-sm);
  border: none;
  background: var(--accent);
  color: #FFFFFF;
  cursor: pointer;
}
.chat-input button:disabled { opacity: 0.5; cursor: default; }
.chat-input button:not(:disabled):hover { background: var(--accent-ink); }

.disclaimer {
  font-size: 13px;
  color: var(--faint);
  margin: 14px 0 0;
  line-height: 1.5;
}

.error-banner {
  font-size: 14px;
  color: #8a3b1f;
  background: #FBEDE6;
  border: 1px solid #F0CDB8;
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  margin-bottom: 14px;
  display: none;
}
.error-banner.visible { display: block; }

/* ---------- Stats ---------- */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  margin-top: 28px;
}
.stat {
  background: var(--surface);
  padding: 20px 16px;
  text-align: left;
}
.stat-num {
  display: block;
  font-family: var(--mono);
  font-size: 26px;
  font-weight: 600;
  color: var(--accent-ink);
}
.stat-label {
  display: block;
  font-size: 14px;
  color: var(--muted);
  margin-top: 4px;
  line-height: 1.4;
}

@media (max-width: 640px) {
  .stats { grid-template-columns: repeat(2, 1fr); }
  .record h1 { font-size: 25px; }
  .chat-window { height: 320px; }
}

/* ---------- Footer ---------- */
footer {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 24px 48px;
  font-size: 14px;
  color: var(--muted);
}

/* ---------- How-it-works page ---------- */
.flow {
  display: flex;
  flex-direction: column;
  gap: 0;
}
.flow-step {
  display: grid;
  grid-template-columns: 28px 1fr;
  gap: 16px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}
.flow-step:last-child { border-bottom: none; }
.flow-index {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--faint);
  padding-top: 3px;
}
.flow-step h3 {
  margin: 0 0 4px;
  font-size: 18px;
}
.flow-step p {
  margin: 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.55;
}
.flow-step .tag {
  display: inline-block;
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--accent-ink);
  background: var(--accent-soft);
  border: 1px solid var(--accent-soft-line);
  border-radius: 999px;
  padding: 2px 8px;
  margin-top: 8px;
}
.guardrails {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-top: 8px;
}
.guardrail {
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  background: var(--surface);
}
.guardrail h4 {
  margin: 0 0 4px;
  font-size: 15px;
}
.guardrail p {
  margin: 0;
  font-size: 14.5px;
  color: var(--muted);
  line-height: 1.5;
}
@media (max-width: 640px) {
  .guardrails { grid-template-columns: 1fr; }
}
.page-title {
  font-size: 28px;
  margin: 0 0 8px;
}
.page-lede {
  color: var(--muted);
  font-size: 17px;
  line-height: 1.55;
  margin: 0 0 32px;
  max-width: 560px;
}
section + h2 { margin-top: 36px; }
h2.section-head {
  font-size: 15px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-family: var(--mono);
  color: var(--muted);
  margin: 40px 0 4px;
}