/* Coral — dark chat theme. Accent: DigitalOcean brand blue (#0080FF). */

:root {
  --bg: #0b1020;
  --bg-raised: #121a2e;
  --bg-input: #0e1526;
  --border: #243049;
  --text: #e6ecf5;
  --text-dim: #93a1b8;
  --accent: #0080ff; /* DigitalOcean blue */
  --accent-soft: rgba(0, 128, 255, 0.16);
  --danger: #ff4d4f;
  --danger-soft: rgba(255, 77, 79, 0.12);
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font:
    15px/1.5 system-ui,
    -apple-system,
    "Segoe UI",
    Roboto,
    sans-serif;
  display: flex;
  flex-direction: column;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

code {
  font-family: var(--mono);
  font-size: 0.9em;
  color: var(--text-dim);
}

/* ----------------------------------------------------------- top bar */

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.65rem 1rem;
  border-bottom: 1px solid var(--border);
  background: var(--bg-raised);
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.brand-dot {
  width: 0.7rem;
  height: 0.7rem;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent);
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* Signed-in identity (email) shown next to the Log out button. */
.auth-status {
  font-size: 0.85rem;
  opacity: 0.8;
  max-width: 22ch;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

button {
  font: inherit;
  color: var(--text);
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.45rem 0.9rem;
  cursor: pointer;
}

button:hover {
  border-color: var(--accent);
}

button:focus-visible,
a:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

button[type="submit"] {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  font-weight: 600;
}

button[disabled] {
  opacity: 0.55;
  cursor: wait;
}

/* ----------------------------------------------------------- layout */

.layout {
  flex: 1;
  display: grid;
  grid-template-columns: 1fr minmax(240px, 320px);
  gap: 1rem;
  padding: 1rem;
  min-height: 0;
  width: min(1200px, 100%);
  margin: 0 auto;
}

@media (max-width: 760px) {
  .layout {
    grid-template-columns: 1fr;
  }
}

/* ----------------------------------------------------------- chat */

.chat {
  display: flex;
  flex-direction: column;
  min-height: 0;
}

.messages {
  flex: 1;
  overflow-y: auto;
  margin: 0 0 1rem;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.msg {
  max-width: 85%;
  border-radius: 12px;
  padding: 0.6rem 0.85rem;
  background: var(--bg-raised);
  border: 1px solid var(--border);
}

.msg-user {
  align-self: flex-end;
  background: var(--accent-soft);
  border-color: var(--accent);
}

.msg-role {
  display: block;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-dim);
  margin-bottom: 0.2rem;
}

.msg-body {
  margin: 0;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.msg-meta {
  margin: 0.4rem 0 0;
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--text-dim);
}

.msg-pending {
  opacity: 0.6;
}

.composer {
  display: flex;
  gap: 0.5rem;
  align-items: flex-end;
}

textarea,
input {
  font: inherit;
  color: var(--text);
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.55rem 0.7rem;
  width: 100%;
  resize: vertical;
}

/* ----------------------------------------------------------- errors */

.error-banner {
  background: var(--danger-soft);
  border: 1px solid var(--danger);
  color: #ffb3b4;
  border-radius: 10px;
  padding: 0.6rem 0.85rem;
  margin-bottom: 0.75rem;
  font-weight: 600;
}

.error-banner.error-429 {
  font-size: 1.05rem;
  border-width: 2px;
  box-shadow: 0 0 0 3px var(--danger-soft);
}

/* ----------------------------------------------------------- budget panel */

.budget {
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 0.9rem 1rem;
  align-self: start;
  position: sticky;
  top: 1rem;
}

.panel-title {
  margin: 0 0 0.6rem;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
}

.budget-empty {
  margin: 0;
  font-size: 0.85rem;
  color: var(--text-dim);
}

.budget-list {
  margin: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.35rem;
}

.budget-list dt {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--text-dim);
  overflow-wrap: anywhere;
}

.budget-list dd {
  margin: 0 0 0.4rem;
  font-family: var(--mono);
  font-size: 1.05rem;
  color: var(--text);
}

.budget-updated {
  margin: 0.6rem 0 0;
  font-size: 0.75rem;
  color: var(--text-dim);
}

/* ----------------------------------------------------------- settings drawer */

.drawer {
  position: fixed;
  top: 0;
  right: 0;
  height: 100%;
  width: min(380px, 100%);
  background: var(--bg-raised);
  border-left: 1px solid var(--border);
  padding: 1.25rem;
  overflow-y: auto;
  box-shadow: -12px 0 32px rgba(0, 0, 0, 0.45);
  z-index: 10;
}

.drawer label {
  display: block;
  margin: 0.9rem 0 0.3rem;
  font-size: 0.85rem;
  color: var(--text-dim);
}

.drawer textarea {
  font-family: var(--mono);
  font-size: 0.8rem;
}

.drawer button[type="submit"] {
  margin-top: 1rem;
  width: 100%;
}

.hint {
  font-size: 0.78rem;
  color: var(--text-dim);
}