/* ── Tokens ─────────────────────────────────── */
:root {
  --bg: #0a0c0e;
  --bg-2: #11141a;
  --ink: #e8e3d4;
  --ink-2: #c8c2b3;
  --muted: #6f6a5d;
  --muted-2: #4a463e;
  --hairline: #1c1f23;
  --hairline-2: #2a2e34;
  --accent: #ffba6e;
  --accent-soft: rgba(255, 186, 110, 0.10);
  --accent-2: #ff9f4a;
  --bad: #ff6f6f;
  --ok: #7df9b9;
  --mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --in-dur: 480ms;
  --out-dur: 220ms;
  --ease: cubic-bezier(0.65, 0, 0.35, 1);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { background: var(--bg); }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--mono);
  font-size: 15px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}
::selection { background: var(--accent); color: var(--bg); }
button { font-family: inherit; cursor: pointer; }
a { color: var(--accent); text-decoration: none; border-bottom: 1px solid var(--accent-soft); transition: border-color 200ms; }
a:hover { border-bottom-color: var(--accent); }
kbd {
  font-family: var(--mono);
  font-size: 0.8em;
  border: 1px solid var(--hairline-2);
  border-radius: 3px;
  padding: 1px 5px;
  color: var(--muted);
  background: var(--bg-2);
}

/* ── CRT frame (subtle scanlines + vignette + noise) ─────────────────────────────────── */
.crt-frame {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 100;
}
.crt-scan {
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    to bottom,
    transparent 0,
    transparent 2px,
    rgba(0, 0, 0, 0.06) 2px,
    rgba(0, 0, 0, 0.06) 3px
  );
  opacity: 0.55;
}
.crt-scan::before {
  content: "";
  position: absolute;
  inset: -10% -2% -10% -2%;
  background: linear-gradient(180deg, transparent 0%, rgba(255, 186, 110, 0.045) 50%, transparent 100%);
  height: 12vh;
  animation: scan-sweep 8s linear infinite;
}
@keyframes scan-sweep {
  0% { transform: translateY(-20vh); }
  100% { transform: translateY(120vh); }
}
.crt-noise {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255, 186, 110, 0.03) 1px, transparent 1px);
  background-size: 3px 3px;
  opacity: 0.5;
}
.crt-vignette {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, transparent 55%, rgba(0, 0, 0, 0.55) 100%);
}

@media (prefers-reduced-motion: reduce) {
  .crt-scan::before { animation: none; }
}

/* ── Top bar ─────────────────────────────────── */
.top-bar {
  border-bottom: 1px solid var(--hairline);
  position: sticky;
  top: 0;
  z-index: 30;
  background: var(--bg);
}
.top-bar-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0.85rem 1.6rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.brand {
  display: inline-flex;
  align-items: baseline;
  gap: 0.6rem;
  background: none;
  border: none;
  padding: 0;
  color: var(--ink);
  font-family: var(--mono);
}
.brand-glyph {
  color: var(--accent);
  animation: blink 1.06s steps(1, end) infinite;
}
@keyframes blink { 0%, 50% { opacity: 1; } 51%, 100% { opacity: 0; } }
.brand-text {
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.18em;
}
.brand-version {
  font-size: 0.7rem;
  color: var(--muted);
  letter-spacing: 0.1em;
}
.top-bar-meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
}
.persona-tag {
  color: var(--accent);
  border: 1px solid var(--hairline-2);
  padding: 0.25rem 0.55rem;
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.key-pill {
  color: var(--muted);
  border: 1px solid var(--hairline-2);
  padding: 0.25rem 0.55rem;
  font-size: 0.7rem;
  letter-spacing: 0.06em;
}
.key-pill[data-state="set"] {
  color: var(--ok);
  border-color: var(--hairline-2);
}
.key-pill[data-state="set"]::before { content: "● "; color: var(--ok); }
.top-btn {
  background: none;
  border: 1px solid var(--hairline-2);
  color: var(--ink-2);
  padding: 0.3rem 0.65rem;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  transition: color 200ms, border-color 200ms, background 200ms;
}
.top-btn:hover {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--accent-soft);
}

/* ── Stage / screens ─────────────────────────────────── */
.stage {
  flex: 1;
  position: relative;
  max-width: 1080px;
  width: 100%;
  margin: 0 auto;
  padding: 3rem 1.6rem;
  display: flex;
  flex-direction: column;
  z-index: 2;
}
.screen {
  width: 100%;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity var(--in-dur) var(--ease),
              transform var(--in-dur) var(--ease);
}
.screen.is-active { opacity: 1; transform: translateY(0); }
.screen.is-exiting {
  opacity: 0;
  transform: translateY(-6px);
  transition: opacity var(--out-dur) var(--ease),
              transform var(--out-dur) var(--ease);
}
@media (prefers-reduced-motion: reduce) {
  .screen, .screen.is-exiting { transition-duration: 60ms !important; transform: none !important; }
}

/* ── Boot ─────────────────────────────────── */
.screen-boot { padding-top: 4rem; }
.boot {
  max-width: 600px;
  margin: 4rem auto;
}
.boot-banner {
  font-family: var(--mono);
  font-size: 0.92rem;
  color: var(--accent);
  white-space: pre;
  margin: 0;
  line-height: 1.4;
  text-shadow: 0 0 8px rgba(255, 186, 110, 0.35);
}
.boot-cursor {
  font-family: var(--mono);
  color: var(--accent);
  display: inline-block;
  animation: blink 1.06s steps(1, end) infinite;
  margin-top: 0.8rem;
}

/* ── Gate ─────────────────────────────────── */
.screen-gate { padding-top: 4rem; }
.gate {
  max-width: 560px;
  margin: 4rem auto;
}
.gate-title {
  font-family: var(--mono);
  font-weight: 500;
  font-size: clamp(1.5rem, 3.6vw, 2rem);
  letter-spacing: 0.02em;
  color: var(--accent);
  margin: 0 0 1.6rem;
  line-height: 1.3;
  text-shadow: 0 0 10px rgba(255, 186, 110, 0.3);
  min-height: 1.4em;
}
.gate-line {
  font-family: var(--mono);
  color: var(--muted);
  font-size: 0.92rem;
  margin: 0 0 0.4rem;
  letter-spacing: 0.01em;
}
.gate-line:nth-child(2) { color: var(--ink-2); margin-bottom: 2.4rem; }
.gate-input {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  border-bottom: 1px solid var(--hairline-2);
  padding: 0.7rem 0;
  margin-bottom: 1.2rem;
  transition: border-bottom-color 220ms;
}
.gate-input:focus-within { border-bottom-color: var(--accent); }
.gate-prompt {
  color: var(--accent);
  font-family: var(--mono);
  font-size: 1.1rem;
  text-shadow: 0 0 6px rgba(255, 186, 110, 0.5);
}
.gate-input input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: var(--ink);
  font-family: var(--mono);
  font-size: 1.05rem;
  letter-spacing: 0.04em;
  caret-color: var(--accent);
}
.gate-input input::placeholder { color: var(--muted-2); }
.gate-submit {
  background: transparent;
  border: 1px solid var(--hairline-2);
  color: var(--accent);
  width: 2.2rem;
  height: 2.2rem;
  font-family: var(--mono);
  font-size: 1.1rem;
  transition: border-color 200ms, background 200ms;
}
.gate-submit:hover {
  border-color: var(--accent);
  background: var(--accent-soft);
}
.gate-hint {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--muted);
  margin: 0;
  letter-spacing: 0.02em;
}

/* Type-target = will be filled by JS, content typed in char-by-char */
.type-target {
  visibility: visible;
}
.type-target.is-typing::after {
  content: "▮";
  color: var(--accent);
  margin-left: 2px;
  animation: blink 1.06s steps(1, end) infinite;
}

/* ── Persona pick ─────────────────────────────────── */
.persona-pick {
  max-width: 760px;
  margin: 6rem auto;
  text-align: center;
}
.persona-q {
  font-family: var(--mono);
  font-weight: 400;
  font-size: clamp(1.6rem, 4vw, 2.2rem);
  letter-spacing: 0.01em;
  margin: 0 0 2.4rem;
  color: var(--ink);
  line-height: 1.3;
  min-height: 1.4em;
}
.persona-q .caret {
  color: var(--accent);
  margin-left: 6px;
  animation: blink 1.06s steps(1, end) infinite;
}
.persona-input {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  max-width: 560px;
  margin: 0 auto 1rem;
  border-bottom: 1px solid var(--hairline-2);
  padding: 0.6rem 0;
  transition: border-bottom-color 240ms;
}
.persona-input:focus-within { border-bottom-color: var(--accent); }
.persona-input input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: var(--ink);
  font-family: var(--mono);
  font-size: 1.1rem;
  letter-spacing: 0.02em;
  caret-color: var(--accent);
  text-align: center;
}
.persona-input input::placeholder { color: var(--muted-2); font-size: 0.95rem; }
.persona-submit {
  background: transparent;
  border: 1px solid var(--hairline-2);
  color: var(--accent);
  padding: 0.5rem 0.95rem;
  font-family: var(--mono);
  font-size: 0.85rem;
  letter-spacing: 0.04em;
  transition: border-color 200ms, background 200ms;
}
.persona-submit:hover {
  border-color: var(--accent);
  background: var(--accent-soft);
}
.persona-hint {
  font-family: var(--mono);
  color: var(--muted);
  font-size: 0.8rem;
  margin: 0 0 2.4rem;
  letter-spacing: 0.02em;
}
.persona-quick {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
}
.quick-chip {
  background: transparent;
  border: 1px solid var(--hairline-2);
  color: var(--muted);
  padding: 0.4rem 0.85rem;
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.02em;
  transition: color 200ms, border-color 200ms, background 200ms;
}
.quick-chip:hover {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--accent-soft);
}

/* ── Chat ─────────────────────────────────── */
.screen-chat { padding-top: 1rem; padding-bottom: 0; }
.chat {
  max-width: 740px;
  margin: 0 auto;
  width: 100%;
}
.chat-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding-bottom: 1rem;
  margin-bottom: 1.5rem;
  border-bottom: 1px solid var(--hairline-2);
}
.chat-head-line {
  display: flex;
  align-items: baseline;
  gap: 0.7rem;
  flex-wrap: wrap;
}
.chat-head-tag {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--muted);
  text-transform: uppercase;
}
.chat-head-name {
  font-family: var(--mono);
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--accent);
  margin: 0;
  letter-spacing: 0.02em;
  text-shadow: 0 0 8px rgba(255, 186, 110, 0.25);
}
.chat-reset {
  background: transparent;
  border: 1px solid var(--hairline-2);
  color: var(--muted);
  padding: 0.35rem 0.7rem;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  transition: color 200ms, border-color 200ms;
}
.chat-reset:hover {
  color: var(--accent);
  border-color: var(--accent);
}

.chat-thread {
  display: flex;
  flex-direction: column;
  gap: 1.6rem;
  margin-bottom: 1.4rem;
  min-height: 200px;
}
.msg {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  animation: msg-in 320ms var(--ease) both;
}
@keyframes msg-in {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}
.msg-meta {
  display: flex;
  align-items: baseline;
  gap: 0.7rem;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.msg-user .msg-meta-label { color: var(--muted); }
.msg-bot .msg-meta-label { color: var(--accent); }
.msg-meta-status {
  color: var(--muted-2);
  font-style: italic;
  text-transform: none;
  letter-spacing: 0.02em;
}
.msg-meta-status.is-active::after {
  content: "▮";
  margin-left: 4px;
  color: var(--accent);
  animation: blink 1.06s steps(1, end) infinite;
}
.msg-body {
  font-family: var(--mono);
  font-size: 0.96rem;
  line-height: 1.65;
  color: var(--ink);
  white-space: pre-wrap;
  word-wrap: break-word;
}
.msg-user .msg-body {
  color: var(--ink-2);
  border-left: 2px solid var(--hairline-2);
  padding-left: 0.9rem;
}
.msg-bot .msg-body {
  color: var(--ink);
  border-left: 2px solid var(--accent);
  padding-left: 0.9rem;
}

.chat-compose {
  display: flex;
  align-items: flex-end;
  gap: 0.6rem;
  border-top: 1px solid var(--hairline-2);
  padding: 0.85rem 0;
  position: sticky;
  bottom: 0;
  background: var(--bg);
}
.compose-prompt {
  color: var(--accent);
  font-family: var(--mono);
  font-size: 1.1rem;
  padding: 0.4rem 0;
  text-shadow: 0 0 6px rgba(255, 186, 110, 0.5);
}
.chat-compose textarea {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: var(--ink);
  font-family: var(--mono);
  font-size: 1rem;
  line-height: 1.5;
  resize: none;
  padding: 0.4rem 0;
  max-height: 8em;
  overflow-y: auto;
  caret-color: var(--accent);
}
.chat-compose textarea::placeholder { color: var(--muted-2); }
.compose-send {
  background: transparent;
  border: 1px solid var(--hairline-2);
  color: var(--accent);
  padding: 0.45rem 0.85rem;
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  transition: border-color 200ms, background 200ms, opacity 200ms;
  flex-shrink: 0;
}
.compose-send:hover {
  border-color: var(--accent);
  background: var(--accent-soft);
}
.compose-send:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}
.chat-hint {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--muted-2);
  letter-spacing: 0.04em;
  margin: 0 0 1.5rem;
}

/* ── Buttons ─────────────────────────────────── */
.ask-actions {
  display: flex;
  gap: 1rem;
  margin-top: 1.5rem;
}
.btn-primary {
  background: var(--accent);
  color: var(--bg);
  border: 1px solid var(--accent);
  padding: 0.6rem 1.2rem;
  font-family: var(--mono);
  font-size: 0.82rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  transition: background 200ms, color 200ms;
}
.btn-primary:hover {
  background: transparent;
  color: var(--accent);
}
.btn-ghost {
  background: transparent;
  border: 1px solid var(--hairline-2);
  color: var(--muted);
  padding: 0.6rem 1.2rem;
  font-family: var(--mono);
  font-size: 0.82rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  transition: color 200ms, border-color 200ms;
}
.btn-ghost:hover {
  color: var(--accent);
  border-color: var(--accent);
}

.error-box {
  font-family: var(--mono);
  font-size: 0.82rem;
  background: var(--bg-2);
  border: 1px solid var(--hairline-2);
  border-left: 2px solid var(--bad);
  padding: 0.85rem;
  color: var(--bad);
  white-space: pre-wrap;
  word-break: break-word;
  margin: 1rem 0;
  max-height: 18rem;
  overflow-y: auto;
}

/* ── Settings dialog ─────────────────────────────────── */
.settings {
  background: var(--bg-2);
  color: var(--ink);
  border: 1px solid var(--hairline-2);
  padding: 0;
  max-width: 480px;
  width: calc(100% - 2rem);
}
.settings::backdrop { background: rgba(0, 0, 0, 0.7); backdrop-filter: blur(4px); }
.settings-form { padding: 1.8rem; }
.settings-title {
  font-family: var(--mono);
  font-size: 1.1rem;
  font-weight: 500;
  margin: 0 0 0.6rem;
  letter-spacing: 0.06em;
  color: var(--accent);
}
.settings-lede {
  font-size: 0.85rem;
  color: var(--muted);
  margin: 0 0 1.5rem;
  font-family: var(--mono);
  letter-spacing: 0.01em;
}
.field {
  display: block;
  margin-bottom: 1.1rem;
}
.field-label {
  display: block;
  font-family: var(--mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin-bottom: 0.4rem;
}
.field input,
.field select {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--hairline-2);
  padding: 0.55rem 0.65rem;
  font-family: var(--mono);
  font-size: 0.9rem;
  color: var(--ink);
  outline: none;
  transition: border-color 200ms;
}
.field input:focus, .field select:focus { border-color: var(--accent); }
.field-hint {
  display: block;
  font-size: 0.74rem;
  color: var(--muted);
  margin-top: 0.4rem;
  line-height: 1.5;
  font-family: var(--mono);
}
.field-hint code {
  background: var(--bg);
  padding: 1px 4px;
  border-radius: 2px;
}
.settings-actions {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  margin-top: 1.4rem;
  padding-top: 1.3rem;
  border-top: 1px solid var(--hairline);
}
.settings-actions .spacer { flex: 1; }

/* ── Responsive ─────────────────────────────────── */
@media (max-width: 720px) {
  .top-bar-inner, .stage { padding-left: 1rem; padding-right: 1rem; }
  .top-bar-meta { gap: 0.5rem; }
  .brand-version { display: none; }
  .key-pill { font-size: 0.65rem; padding: 0.2rem 0.4rem; }
  .top-btn { font-size: 0.65rem; padding: 0.25rem 0.5rem; }
  .stage { padding-top: 1.5rem; }
  .gate, .persona-pick { margin-top: 2rem; }
  .persona-input input { font-size: 1rem; }
  .persona-quick { gap: 0.4rem; }
  .quick-chip { font-size: 0.72rem; padding: 0.35rem 0.65rem; }
  .chat { padding: 0; }
}