@font-face {
  font-family: "Droid Naskh";
  src: url("/fonts/DroidNaskh-Regular.woff2") format("woff2");
  font-weight: 400;
  font-display: swap;
}
@font-face {
  font-family: "Droid Naskh";
  src: url("/fonts/DroidNaskh-Bold.woff2") format("woff2");
  font-weight: 700;
  font-display: swap;
}

:root {
  --paper: #fbf9f5;
  --surface: #ffffff;
  --surface-2: #f3efe7;
  --ink: #1c1a17;
  --ink-soft: #45413a;
  --muted: #746d63;
  --line: #e5dfd4;
  --accent: #0f6b5c;
  --accent-ink: #ffffff;
  --accent-soft: #e7f2ee;
  --danger: #a33a2a;
  --shadow: 0 1px 2px rgba(28, 26, 23, .05), 0 8px 30px rgba(28, 26, 23, .06);
  --radius: 14px;
  --maxw: 780px;
}

:root[data-theme="dark"] {
  --paper: #16181a;
  --surface: #1e2124;
  --surface-2: #262a2e;
  --ink: #eae6de;
  --ink-soft: #cfc9bf;
  --muted: #9a948a;
  --line: #2f343a;
  --accent: #63d3b8;
  --accent-ink: #0d1f1a;
  --accent-soft: #1c2f2a;
  --danger: #e07a68;
  --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 8px 30px rgba(0, 0, 0, .35);
}

* { box-sizing: border-box; }

html, body { height: 100%; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Droid Naskh", "Segoe UI", system-ui, sans-serif;
  font-size: 17px;
  line-height: 1.7;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

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

/* ---------- top bar ---------- */
.topbar {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 16px;
  padding-top: max(10px, env(safe-area-inset-top));
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
  z-index: 10;
}

.brand {
  display: flex;
  align-items: center;
  gap: 9px;
  font-weight: 700;
  font-size: 17px;
  letter-spacing: -.2px;
  white-space: nowrap;
}
.brand-mark { width: 22px; height: 22px; color: var(--accent); }
.brand em { font-style: normal; color: var(--accent); }

.topbar-actions { display: flex; align-items: center; gap: 8px; }

.model-pick select {
  appearance: none;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink);
  font: inherit;
  font-size: 14px;
  padding: 7px 12px;
  border-radius: 999px;
  cursor: pointer;
}
.model-pick select:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.icon-btn {
  display: grid;
  place-items: center;
  width: 38px; height: 38px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
  color: var(--ink-soft);
  cursor: pointer;
}
.icon-btn:hover { background: var(--surface-2); color: var(--ink); }
.icon-btn svg { width: 18px; height: 18px; }

.chip-toggle {
  font: inherit;
  font-size: 13.5px;
  padding: 7px 13px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--muted);
  cursor: pointer;
  transition: background .15s, color .15s, border-color .15s;
}
.chip-toggle[aria-pressed="true"] {
  background: var(--accent-soft);
  color: var(--accent);
  border-color: color-mix(in srgb, var(--accent) 40%, var(--line));
  font-weight: 700;
}

.balance { margin-inline-start: 6px; }
.balance.low { color: var(--danger); }

/* ---------- chat ---------- */
.chat {
  flex: 1 1 auto;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: 22px 16px 8px;
  scroll-behavior: smooth;
}

.empty {
  max-width: 620px;
  margin: 8vh auto 0;
  text-align: center;
}
.empty h1 {
  font-size: clamp(26px, 5vw, 34px);
  line-height: 1.35;
  margin: 0 0 10px;
  letter-spacing: -.3px;
}
.empty p { color: var(--muted); margin: 0 auto 26px; max-width: 46ch; }

.suggestions {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 10px;
}
.suggestions button {
  font: inherit;
  font-size: 15px;
  text-align: right;
  padding: 13px 15px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface);
  color: var(--ink-soft);
  cursor: pointer;
  transition: border-color .15s, transform .15s;
}
.suggestions button:hover { border-color: var(--accent); transform: translateY(-1px); }

.msg {
  max-width: var(--maxw);
  margin: 0 auto 26px;
  animation: rise .18s ease-out;
}
@keyframes rise { from { opacity: 0; transform: translateY(4px); } }

.msg-user { display: flex; flex-direction: column; align-items: flex-start; }
.msg-user .bubble {
  max-width: 88%;
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: 16px 16px 16px 5px;
  padding: 11px 16px;
  white-space: pre-wrap;
  word-break: break-word;
  font-size: 17px;
}

.msg-ai .role {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 7px;
}
.msg-ai .dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--accent);
}
.msg-ai .dot.thinking { animation: pulse 1s infinite ease-in-out; }
@keyframes pulse { 50% { opacity: .25; } }

.content {
  font-size: 19px;
  line-height: 1.95;
  word-wrap: break-word;
  overflow-wrap: anywhere;
}
.content > :first-child { margin-top: 0; }
.content > :last-child { margin-bottom: 0; }
.content p { margin: 0 0 .85em; }
.content h1, .content h2, .content h3 {
  line-height: 1.45;
  margin: 1.3em 0 .5em;
  font-size: 1.12em;
}
.content ul, .content ol { margin: 0 0 .85em; padding-inline-start: 1.3em; }
.content li { margin: .3em 0; }
.content blockquote {
  margin: .8em 0;
  padding: .2em 1em;
  border-inline-start: 3px solid var(--accent);
  color: var(--ink-soft);
  background: var(--accent-soft);
  border-radius: 0 8px 8px 0;
}
.content code {
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: .82em;
  background: var(--surface-2);
  padding: .12em .4em;
  border-radius: 5px;
  direction: ltr;
  unicode-bidi: embed;
}
.content pre {
  direction: ltr;
  text-align: left;
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 13px 15px;
  overflow-x: auto;
  margin: .8em 0;
  line-height: 1.55;
}
.content pre code { background: none; padding: 0; font-size: 13.5px; }
.content a { color: var(--accent); }
.content hr { border: 0; border-top: 1px solid var(--line); margin: 1.3em 0; }
.content table { border-collapse: collapse; width: 100%; margin: .8em 0; font-size: .9em; }
.content th, .content td { border: 1px solid var(--line); padding: 6px 10px; text-align: right; }

.msg-tools {
  display: flex;
  gap: 6px;
  margin-top: 8px;
  opacity: .55;
  transition: opacity .15s;
}
.msg:hover .msg-tools, .msg:focus-within .msg-tools { opacity: 1; }
.tool-btn {
  font: inherit;
  font-size: 12.5px;
  color: var(--muted);
  background: none;
  border: 1px solid transparent;
  border-radius: 8px;
  padding: 3px 9px;
  cursor: pointer;
}
.tool-btn:hover { background: var(--surface-2); color: var(--ink); border-color: var(--line); }
.tool-btn.flagged { color: var(--danger); border-color: color-mix(in srgb, var(--danger) 35%, transparent); }

/* ---------- composer ---------- */
.composer-wrap {
  flex: 0 0 auto;
  padding: 10px 16px max(12px, env(safe-area-inset-bottom));
  background: linear-gradient(to top, var(--paper) 62%, transparent);
}
.composer {
  max-width: var(--maxw);
  margin: 0 auto;
  display: flex;
  align-items: flex-end;
  gap: 9px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 8px 9px 8px 12px;
  box-shadow: var(--shadow);
}
.composer:focus-within { border-color: color-mix(in srgb, var(--accent) 55%, var(--line)); }

#input {
  flex: 1;
  resize: none;
  border: 0;
  outline: 0;
  background: none;
  color: var(--ink);
  font: inherit;
  font-size: 17px;
  line-height: 1.65;
  max-height: 40vh;
  padding: 6px 2px;
}
#input::placeholder { color: var(--muted); }

.send-btn {
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  width: 40px; height: 40px;
  border: 0;
  border-radius: 12px;
  background: var(--accent);
  color: var(--accent-ink);
  cursor: pointer;
  transition: opacity .15s, transform .1s;
}
.send-btn svg { width: 19px; height: 19px; transform: scaleX(-1); }
.send-btn:hover:not(:disabled) { opacity: .9; }
.send-btn:active:not(:disabled) { transform: scale(.95); }
.send-btn:disabled { opacity: .35; cursor: default; }

.hint {
  max-width: var(--maxw);
  margin: 7px auto 0;
  font-size: 12px;
  color: var(--muted);
  text-align: center;
}

/* ---------- reports ---------- */
.report-bar {
  flex: 0 0 auto;
  padding: 0 16px 8px;
  text-align: center;
}
.report-bar button {
  font: inherit;
  font-size: 13px;
  color: var(--muted);
  background: none;
  border: 0;
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.reports-dialog {
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--surface);
  color: var(--ink);
  padding: 0;
  width: min(640px, calc(100vw - 32px));
  box-shadow: var(--shadow);
}
.reports-dialog::backdrop { background: rgba(10, 12, 14, .45); backdrop-filter: blur(2px); }
.reports-inner { padding: 20px; }
.reports-inner h2 { margin: 0 0 6px; font-size: 20px; }
.muted { color: var(--muted); font-size: 14px; margin: 0 0 14px; }

.reports-list { max-height: 46vh; overflow-y: auto; display: grid; gap: 10px; }
.report-item {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px 12px;
  font-size: 14px;
  background: var(--surface-2);
}
.report-item .q { color: var(--muted); margin-bottom: 4px; }
.report-item .a { max-height: 4.8em; overflow: hidden; }
.report-item .meta { color: var(--muted); font-size: 12px; margin-top: 5px; }

.dialog-actions { display: flex; gap: 8px; justify-content: flex-end; margin-top: 16px; flex-wrap: wrap; }
.primary-btn, .ghost-btn, .danger-btn {
  font: inherit; font-size: 14px;
  padding: 8px 15px;
  border-radius: 10px;
  cursor: pointer;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink);
}
.primary-btn { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.danger-btn { color: var(--danger); }
.ghost-btn:hover, .danger-btn:hover { background: var(--surface-2); }

@media (max-width: 560px) {
  body { font-size: 16px; }
  .content { font-size: 18px; line-height: 1.9; }
  .topbar { padding-inline: 12px; gap: 8px; }
  .chat { padding-inline: 12px; }
  .composer-wrap { padding-inline: 10px; }
  .brand { font-size: 15px; gap: 6px; }
  .brand-mark { width: 19px; height: 19px; }
  .topbar-actions { gap: 6px; }
  .model-pick select { padding: 6px 10px; font-size: 13px; }
  .chip-toggle { padding: 6px 10px; font-size: 12.5px; }
  .icon-btn { width: 34px; height: 34px; }
  .icon-btn svg { width: 16px; height: 16px; }
}
@media (max-width: 400px) {
  .brand em { display: none; }
}