/* llama.go — Genesis Design System (Light Mode) */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --primary:        #6366F1;
  --primary-hover:  #4F46E5;
  --secondary:      #20970B;
  --neutral:        #9C9C9C;
  --bg:             #FAFAFA;
  --surface:        #FFFFFF;
  --text-primary:   #0A0A0A;
  --text-secondary: #6B6B6B;
  --border:         #E8E8EC;
  --success:        #10B981;
  --warning:        #F59E0B;
  --error:          #EF4444;

  --font-display:   "General Sans", sans-serif;
  --font-body:      "DM Sans", sans-serif;
  --font-code:      "JetBrains Mono", ui-monospace, monospace;
}

html, body { height: 100%; }

body {
  font-family: var(--font-body);
  font-size: 15px;
  background: var(--bg);
  color: var(--text-primary);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* ── Header ────────────────────────────────────────────────────────────────── */
header {
  padding: 24px 32px 16px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

header h1 {
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 700;
  letter-spacing: -0.04em;
  color: var(--text-primary);
}

header h1 .dot { color: var(--primary); }

.tagline {
  margin-top: 4px;
  font-size: 13px;
  color: var(--text-secondary);
  font-weight: 500;
}

.sub {
  margin-top: 6px;
  font-size: 12px;
  color: var(--text-secondary);
}

.sub a { 
  color: var(--primary); 
  text-decoration: none; 
  font-weight: 500;
}
.sub a:hover { text-decoration: underline; }

/* ── Main ──────────────────────────────────────────────────────────────────── */
main {
  flex: 1;
  display: flex;
  flex-direction: column;
  max-width: 820px;
  width: 100%;
  margin: 0 auto;
  padding: 0 24px;
}

/* ── Message Log ───────────────────────────────────────────────────────────── */
#log {
  flex: 1;
  overflow-y: auto;
  padding: 32px 0;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.msg {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 16px 20px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--surface);
  line-height: 1.6;
  transition: transform 200ms, box-shadow 200ms;
}

.msg:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0,0,0,0.04);
}

.msg .label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--neutral);
  min-width: 60px;
  padding-top: 2px;
}

.msg.user .label { color: var(--primary); }
.msg.assistant .label { color: var(--text-primary); }
.msg.system .label { color: var(--neutral); }

.msg .body {
  flex: 1;
  white-space: pre-wrap;
  word-break: break-word;
  color: var(--text-primary);
}

.msg.system {
  background: transparent;
  border: none;
  padding: 4px 0;
}

.msg.system:hover {
  transform: none;
  box-shadow: none;
}

.msg.system .body {
  color: var(--text-secondary);
  font-size: 13px;
  font-family: var(--font-code);
}

.progress {
  color: var(--primary);
}

.done {
  color: var(--success);
}

/* ── Composer ──────────────────────────────────────────────────────────────── */
#composer {
  display: flex;
  gap: 12px;
  padding: 24px 0 32px;
  border-top: 1px solid var(--border);
  background: var(--bg);
  align-items: flex-end;
}

#input {
  flex: 1;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 15px;
  padding: 10px 14px;
  resize: none;
  outline: none;
  min-height: 44px;
  transition: border-color 150ms, box-shadow 150ms;
}

#input:focus { 
  border-color: var(--primary); 
  box-shadow: 0 0 0 3px rgba(99,102,241,0.12);
}

#input::placeholder {
  color: var(--neutral);
}

#input:disabled { opacity: 0.5; cursor: not-allowed; }

#send {
  background: var(--primary);
  border: none;
  border-radius: 6px;
  color: #FFFFFF;
  cursor: pointer;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  height: 44px;
  padding: 0 20px;
  transition: background-color 200ms, transform 200ms, box-shadow 200ms;
  white-space: nowrap;
}

#send:hover:not(:disabled) { 
  background: var(--primary-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(99,102,241,0.35);
}

#send:disabled { 
  opacity: 0.5; 
  cursor: not-allowed; 
  transform: none;
  box-shadow: none;
}

/* ── Spinner ───────────────────────────────────────────────────────────────── */
.spinner {
  display: inline-block;
  width: 14px;
  height: 14px;
  border: 2px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  vertical-align: middle;
  margin-right: 8px;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}