:root {
  color-scheme: light;
  --bg: #fffdd0;
  --surface: #f5f5dc;
  --surface-2: #f9f3da;
  --text: #004225;
  --muted: #6f7e57;
  --border: color-mix(in srgb, #004225 34%, #d4af37);
  --accent: #004225;
  --accent-soft: #8a9a5b;
  --hairline: color-mix(in srgb, #d4af37 68%, #8a9a5b 32%);
  --ok: #2d6a4f;
  --bad: #a12a2a;
  --grain-a: rgba(255, 255, 255, 0.14);
  --grain-b: rgba(0, 66, 37, 0.06);
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0f2a1b;
  --surface: #163827;
  --surface-2: #1f4632;
  --text: #fff4cf;
  --muted: #d5c69b;
  --border: color-mix(in srgb, #d4af37 45%, #2d6a4f);
  --accent: #8a9a5b;
  --accent-soft: #d4af37;
  --hairline: color-mix(in srgb, #d4af37 65%, #8a9a5b 35%);
  --ok: #84d18e;
  --bad: #ff8f8f;
  --grain-a: rgba(255, 255, 255, 0.07);
  --grain-b: rgba(212, 175, 55, 0.06);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  background:
    radial-gradient(
      circle at 20% 12%,
      color-mix(in srgb, var(--surface) 70%, transparent),
      transparent 62%
    ),
    radial-gradient(
      circle at 84% 2%,
      color-mix(in srgb, var(--accent-soft) 10%, transparent),
      transparent 42%
    ),
    var(--bg);
  color: var(--text);
  font-family:
    "Inter",
    -apple-system,
    BlinkMacSystemFont,
    "SF Pro Text",
    "Segoe UI",
    sans-serif;
}

body {
  position: relative;
  padding-top: env(safe-area-inset-top);
  padding-bottom: env(safe-area-inset-bottom);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.32;
  background-image:
    radial-gradient(circle at 2px 2px, var(--grain-a) 1px, transparent 1px),
    radial-gradient(circle at 1px 1px, var(--grain-b) 1px, transparent 1px);
  background-size:
    4px 4px,
    3px 3px;
  z-index: 0;
}

.app-shell {
  position: relative;
  z-index: 1;
  min-height: 100svh;
  display: grid;
  grid-template-rows: auto 1fr auto;
  max-width: 780px;
  margin: 0 auto;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.9rem 1rem;
  border-bottom: 1px solid var(--border);
  background: color-mix(in srgb, var(--surface) 95%, transparent);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 10;
}

.topbar::after {
  content: "";
  position: absolute;
  left: 1rem;
  right: 1rem;
  bottom: -1px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--hairline), transparent);
}

.brand-wrap {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

h1 {
  margin: 0;
  font-size: 1rem;
  letter-spacing: 0.03em;
  font-family: "Playfair Display", Georgia, "Times New Roman", serif;
}

.status-text {
  margin: 0.1rem 0 0;
  color: var(--muted);
  font-size: 0.76rem;
}

.status-dot {
  width: 0.65rem;
  height: 0.65rem;
  border-radius: 999px;
  display: inline-block;
  border: 1px solid color-mix(in srgb, var(--hairline) 62%, var(--border));
}

.status-dot.online {
  background: var(--ok);
  box-shadow: 0 0 0 0.2rem color-mix(in srgb, var(--ok) 20%, transparent);
}

.status-dot.offline {
  background: var(--bad);
  box-shadow: 0 0 0 0.2rem color-mix(in srgb, var(--bad) 18%, transparent);
}

.theme-toggle {
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--surface) 88%, var(--accent-soft) 12%);
  color: var(--text);
  width: 2.1rem;
  height: 2.1rem;
  border-radius: 0.25rem;
  font-size: 1rem;
  box-shadow: inset 0 0 0 1px
    color-mix(in srgb, var(--hairline) 42%, transparent);
}

.chat-wrap {
  overflow-y: auto;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.msg {
  max-width: 88%;
  padding: 0.75rem 0.85rem;
  border-radius: 0.18rem;
  line-height: 1.45;
  font-size: 0.95rem;
  white-space: pre-wrap;
  word-wrap: break-word;
  box-shadow: inset 0 0 0 1px
    color-mix(in srgb, var(--hairline) 34%, transparent);
}

.msg.user {
  align-self: flex-end;
  border: 1px solid color-mix(in srgb, var(--accent) 52%, var(--border));
  background: color-mix(in srgb, var(--accent-soft) 26%, var(--surface));
}

.msg.assistant {
  align-self: flex-start;
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--surface) 96%, #ffffff 4%);
}

.composer-wrap {
  border-top: 1px solid var(--border);
  background: var(--surface);
  padding: 0.8rem 0.9rem calc(0.9rem + env(safe-area-inset-bottom));
  position: relative;
}

.composer-wrap::before {
  content: "";
  position: absolute;
  left: 1rem;
  right: 1rem;
  top: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--hairline), transparent);
}

.composer-form {
  display: grid;
  gap: 0.6rem;
}

.prompt-input {
  width: 100%;
  resize: vertical;
  min-height: 6.4rem;
  max-height: 13rem;
  border-radius: 0.25rem;
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--text);
  padding: 0.75rem;
  font-size: 16px;
  line-height: 1.4;
}

.composer-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.6rem;
}

.send-btn {
  border: 1px solid color-mix(in srgb, var(--hairline) 55%, var(--border));
  border-radius: 0.2rem;
  background: var(--accent);
  color: #fffbea;
  font-weight: 600;
  padding: 0.58rem 0.92rem;
  letter-spacing: 0.03em;
}

.send-btn:disabled {
  opacity: 0.6;
}

.progress-pills {
  display: flex;
  gap: 0.4rem;
  overflow-x: auto;
}

.pill {
  border: 1px solid var(--border);
  color: var(--muted);
  background: color-mix(in srgb, var(--surface-2) 92%, #ffffff 8%);
  border-radius: 0.18rem;
  font-size: 0.72rem;
  padding: 0.28rem 0.54rem;
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

.pill.active {
  border-color: color-mix(in srgb, var(--accent) 52%, var(--border));
  color: var(--text);
  background:
    repeating-linear-gradient(
      135deg,
      color-mix(in srgb, var(--accent-soft) 24%, transparent) 0 6px,
      transparent 6px 12px
    ),
    color-mix(in srgb, var(--accent) 15%, var(--surface));
  animation: decoShift 1.35s linear infinite;
}

@keyframes decoShift {
  from {
    background-position:
      0 0,
      0 0;
  }
  to {
    background-position:
      24px 0,
      0 0;
  }
}

.hidden {
  display: none;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}