/* Kasyana intro - dark modern theme */

:root {
  --bg: #0f1117;
  --bg-card: #151a24;
  --bg-elev: #1b2230;
  --border: #262d3d;
  --text: #e7eaf2;
  --text-dim: #98a1b3;
  --accent: #7aa2f7;
  --accent-strong: #5d8bf0;
  --error: #f7768e;
  --radius: 14px;
  --maxw: 780px;
}

* { box-sizing: border-box; }

html { height: 100%; }

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.55;
}

.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 20px;
}

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

/* Header */
.site-header {
  border-bottom: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.02);
}
.header-inner {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 6px 14px;
  padding: 16px 0;
}
.product-name { margin: 0; font-size: 1.35rem; font-weight: 700; }
.tagline { margin: 0; color: var(--text-dim); font-size: 0.95rem; }

/* Hero */
.hero { padding: 44px 0 24px; text-align: center; }
.welcome-message { margin: 0 auto; max-width: 640px; font-size: 1.6rem; font-weight: 650; }

/* Chat card */
main.container { flex: 1; width: 100%; padding-bottom: 32px; }
.chat-card {
  display: flex;
  flex-direction: column;
  height: min(620px, 68vh);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
}

.messages {
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 18px;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}
.messages::-webkit-scrollbar { width: 8px; }
.messages::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }

.bubble {
  max-width: 78%;
  padding: 10px 14px;
  border-radius: 16px;
  white-space: pre-wrap;
  overflow-wrap: break-word;
  animation: bubble-in 0.15s ease-out;
}
@keyframes bubble-in {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: none; }
}

.bubble.user {
  align-self: flex-end;
  background: var(--accent);
  color: #0b0e14;
  border-bottom-right-radius: 6px;
}
.bubble.ai {
  align-self: flex-start;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-bottom-left-radius: 6px;
}
.bubble.error {
  align-self: center;
  max-width: 92%;
  background: rgba(247, 118, 142, 0.08);
  border: 1px solid rgba(247, 118, 142, 0.45);
  color: var(--error);
  border-radius: 10px;
  font-size: 0.9rem;
}

/* Streaming cursor on the active AI bubble */
.bubble.ai.streaming::after {
  content: "";
  display: inline-block;
  width: 8px;
  height: 1em;
  margin-left: 2px;
  vertical-align: text-bottom;
  background: var(--accent);
  animation: blink 1s steps(2, start) infinite;
}
@keyframes blink {
  to { visibility: hidden; }
}

/* Pinned questions */
.pinned-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 0 18px 12px;
}
.pill {
  border: 1px solid var(--border);
  background: var(--bg-elev);
  color: var(--text);
  border-radius: 999px;
  padding: 8px 14px;
  font-size: 0.88rem;
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s, background 0.15s;
}
.pill:hover:not(:disabled) { border-color: var(--accent); color: var(--accent); }
.pill:disabled { opacity: 0.45; cursor: not-allowed; }

/* Input + send */
.chat-form {
  display: flex;
  gap: 10px;
  padding: 14px 18px;
  border-top: 1px solid var(--border);
  background: var(--bg-card);
}
.message-input {
  flex: 1;
  min-width: 0;
  padding: 11px 14px;
  font-size: 0.98rem;
  color: var(--text);
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 10px;
  outline: none;
}
.message-input:focus { border-color: var(--accent); }
.message-input::placeholder { color: var(--text-dim); }
.message-input:disabled { opacity: 0.6; }

.send-btn {
  padding: 0 22px;
  font-size: 0.95rem;
  font-weight: 650;
  color: #0b0e14;
  background: var(--accent);
  border: none;
  border-radius: 10px;
  cursor: pointer;
  transition: background 0.15s;
}
.send-btn:hover:not(:disabled) { background: var(--accent-strong); }
.send-btn:disabled { opacity: 0.45; cursor: not-allowed; }

/* Footer */
.site-footer { border-top: 1px solid var(--border); padding: 16px 0; }
.footer-text { margin: 0; color: var(--text-dim); font-size: 0.85rem; text-align: center; }

/* Responsive */
@media (max-width: 640px) {
  .container { padding: 0 14px; }
  .hero { padding: 26px 0 16px; }
  .welcome-message { font-size: 1.25rem; }
  .chat-card { height: calc(100vh - 250px); min-height: 420px; }
  .bubble { max-width: 92%; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}

/* Docs + pricing pages */
.site-nav { border-top: 1px solid #242937; background: #12151d; }
.nav-inner { display: flex; gap: 20px; padding: 10px 20px; }
.nav-link { color: #9aa3b5; text-decoration: none; font-size: 14px; }
.nav-link:hover { color: #fff; }
.doc-body { max-width: 760px; line-height: 1.6; }
.doc-body h2 { margin-top: 28px; }
.doc-body pre { background: #12151d; border: 1px solid #242937; border-radius: 8px; padding: 12px 14px; overflow-x: auto; font-size: 13px; }
.doc-body code { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
.doc-link { color: #7aa2f7; text-decoration: none; }
.doc-link:hover { text-decoration: underline; }
.pricing-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 20px; margin: 24px 0; }
.pricing-card { background: #1a1d26; border: 1px solid #242937; border-radius: 12px; padding: 22px; }
.pricing-card.featured { border-color: #7aa2f7; }
.pricing-card h2 { margin: 0 0 6px; }
.price { font-size: 26px; font-weight: 700; margin: 6px 0 12px; }
.pricing-card ul { padding-left: 18px; color: #c6cdd9; }
.pricing-card li { margin: 6px 0; }
.hint-p { color: #9aa3b5; font-size: 13px; }