:root {
  --bg0: #071018;
  --bg1: #0c1a24;
  --panel: rgba(12, 28, 40, 0.72);
  --panel-solid: #102330;
  --line: rgba(125, 211, 252, 0.12);
  --text: #eaf4fb;
  --muted: #8aa4b8;
  --accent: #2ec9b3;
  --accent-2: #7dd3fc;
  --warn: #f5b942;
  --ok: #4ade80;
  --bad: #fb7185;
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.38);
  --radius: 18px;
  --font-display: "Syne", sans-serif;
  --font-body: "Vazirmatn", sans-serif;
}

* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body {
  color: var(--text);
  font-family: var(--font-body);
  background:
    radial-gradient(1100px 520px at 8% -8%, rgba(46, 201, 179, 0.22), transparent 55%),
    radial-gradient(800px 420px at 100% 0%, rgba(125, 211, 252, 0.14), transparent 50%),
    radial-gradient(700px 400px at 70% 110%, rgba(245, 185, 66, 0.08), transparent 45%),
    linear-gradient(165deg, var(--bg0), var(--bg1) 48%, #06141c);
  min-height: 100vh;
}
a { color: var(--accent); text-decoration: none; }
.app-shell {
  width: min(1280px, calc(100% - 1.5rem));
  margin: 0 auto;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  padding: 0.85rem 0 1.25rem;
}
body.page-chat { overflow: hidden; }
body.page-chat .app-shell {
  height: 100%;
  max-height: 100dvh;
  padding-bottom: 0.5rem;
}
body.page-chat main {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
}

.topnav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.9rem;
  padding: 0.55rem 0.8rem;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(7, 18, 26, 0.7);
  backdrop-filter: blur(14px);
  box-shadow: var(--shadow);
}
.brand a {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--text);
  font-size: 1.15rem;
  direction: ltr;
  unicode-bidi: isolate;
}
.brand span { color: var(--accent); }
.nav-links { display: flex; gap: 0.35rem; }
.nav-links a {
  color: var(--muted);
  padding: 0.4rem 0.85rem;
  border-radius: 999px;
  border: 1px solid transparent;
  transition: 0.18s ease;
}
.nav-links a:hover { color: var(--text); background: rgba(255,255,255,0.04); }
.nav-links a.active {
  color: #04221c;
  background: linear-gradient(180deg, #5eead4, var(--accent));
  font-weight: 700;
}

button, .btn {
  font-family: inherit;
  cursor: pointer;
  border: 0;
  border-radius: 12px;
  padding: 0.55rem 1rem;
  background: linear-gradient(180deg, #5eead4, var(--accent));
  color: #04221c;
  font-weight: 700;
  box-shadow: 0 8px 18px rgba(46, 201, 179, 0.22);
}
button:hover, .btn:hover { filter: brightness(1.05); }
button.secondary, .btn.secondary {
  background: rgba(255,255,255,0.06);
  color: var(--text);
  box-shadow: none;
  border: 1px solid var(--line);
}
button.danger {
  background: rgba(251, 113, 133, 0.16);
  color: #fecdd3;
  box-shadow: none;
  border: 1px solid rgba(251, 113, 133, 0.28);
}
button:disabled { opacity: 0.55; cursor: wait; }

input, textarea, select {
  font-family: inherit;
  background: rgba(4, 14, 20, 0.72);
  color: var(--text);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.62rem 0.8rem;
  width: 100%;
  outline: none;
}
input:focus, textarea:focus, select:focus {
  border-color: rgba(46, 201, 179, 0.55);
  box-shadow: 0 0 0 3px rgba(46, 201, 179, 0.14);
}

.toast {
  position: fixed;
  bottom: 22px;
  left: 50%;
  transform: translateX(-50%) translateY(16px);
  background: rgba(10, 24, 34, 0.92);
  border: 1px solid var(--line);
  color: var(--text);
  padding: 0.7rem 1.1rem;
  border-radius: 12px;
  opacity: 0;
  pointer-events: none;
  transition: .2s;
  z-index: 50;
  backdrop-filter: blur(10px);
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.toast.bad { border-color: rgba(251, 113, 133, 0.45); color: #fecdd3; }

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow);
}
[hidden] { display: none !important; }

.chat-workspace {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 0.9rem;
  flex: 1;
  min-height: 0;
}
.chat-sidebar, .chat-main {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  min-height: 0;
}
.chat-sidebar { padding: 0; }
.chat-side-top { padding: 0.85rem; display: flex; flex-direction: column; gap: 0.55rem; }
.chat-side-top #newChatBtn { width: 100%; }
.chat-history-list { overflow: auto; padding: 0 0.55rem 0.85rem; }
.conv-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  padding: 0.65rem 0.7rem;
  border-radius: 12px;
  cursor: pointer;
  color: var(--muted);
  margin-bottom: 4px;
}
.conv-item:hover { background: rgba(255,255,255,0.04); color: var(--text); }
.conv-item.active {
  background: linear-gradient(90deg, rgba(46, 201, 179, 0.16), transparent);
  color: var(--text);
  border: 1px solid rgba(46, 201, 179, 0.22);
}

.chat-head {
  padding: 0.95rem 1.1rem;
  border-bottom: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
}
.chat-kicker {
  margin: 0;
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  color: var(--accent);
  font-family: var(--font-display);
}
.chat-head h1 { margin: 0.15rem 0 0; font-size: 1.15rem; }
.chat-meta { margin: 0.2rem 0 0; color: var(--muted); font-size: 0.84rem; }
.chat-status { display: flex; gap: 0.45rem; flex-wrap: wrap; align-items: center; justify-content: flex-end; }
.pill {
  font-size: 0.75rem;
  padding: 0.32rem 0.7rem;
  border-radius: 999px;
  background: rgba(255,255,255,0.05);
  color: var(--muted);
  border: 1px solid var(--line);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}
.pill.on {
  background: rgba(74, 222, 128, 0.12);
  color: var(--ok);
  border-color: rgba(74, 222, 128, 0.28);
}
.pill select {
  width: auto;
  padding: 0.15rem 0.4rem;
  border: 0;
  background: transparent;
  color: var(--text);
}

.chat-box { flex: 1; overflow: auto; padding: 1.1rem; }
.msg {
  max-width: 760px;
  margin: 0 0 0.85rem;
  padding: 0.85rem 1rem;
  border-radius: 16px;
  white-space: pre-wrap;
  line-height: 1.8;
}
.msg.user {
  background: linear-gradient(180deg, rgba(125, 211, 252, 0.16), rgba(46, 201, 179, 0.1));
  margin-right: auto;
  border: 1px solid rgba(125, 211, 252, 0.18);
}
.msg.assistant {
  background: rgba(6, 18, 26, 0.55);
  border: 1px solid var(--line);
}
.msg .src { display: block; font-size: 0.72rem; color: var(--accent-2); margin-bottom: 0.3rem; }
.composer { padding: 0.85rem 1rem 1rem; border-top: 1px solid var(--line); }
.composer-shell {
  display: flex;
  gap: 0.55rem;
  align-items: flex-end;
  background: rgba(4, 14, 20, 0.55);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 0.45rem 0.45rem 0.45rem 0.7rem;
}
.composer textarea {
  min-height: 52px;
  resize: none;
  border: 0;
  background: transparent;
  box-shadow: none;
  padding: 0.45rem 0.2rem;
}
.composer textarea:focus { box-shadow: none; }
.chat-welcome { text-align: center; color: var(--muted); padding: 4.5rem 1rem; }
.chat-welcome-mark {
  width: 64px;
  height: 64px;
  margin: 0 auto 0.9rem;
  border-radius: 18px;
  display: grid;
  place-items: center;
  font-family: var(--font-display);
  font-weight: 700;
  color: #04221c;
  background: linear-gradient(145deg, #5eead4, #38bdf8);
  box-shadow: 0 16px 32px rgba(46, 201, 179, 0.28);
}
.chat-welcome h2 { color: var(--text); margin: 0 0 0.4rem; }
.soft-hint { color: var(--muted); font-size: 0.86rem; padding: 0.2rem 0; }
.del-x { background: transparent; color: var(--muted); padding: 0 6px; box-shadow: none; }

.page-settings main { padding-bottom: 1.5rem; }
.tabs {
  display: flex;
  gap: 0.35rem;
  flex-wrap: wrap;
  margin-bottom: 0.9rem;
  padding: 0.35rem;
  background: rgba(7, 18, 26, 0.55);
  border: 1px solid var(--line);
  border-radius: 16px;
}
.tabs button {
  background: transparent;
  color: var(--muted);
  box-shadow: none;
  font-weight: 600;
}
.tabs button.active {
  background: linear-gradient(180deg, #5eead4, var(--accent));
  color: #04221c;
}
.panel-head {
  display: flex;
  justify-content: space-between;
  gap: 0.8rem;
  align-items: center;
  margin-bottom: 1rem;
}
.panel-head h2 { margin: 0; font-size: 1.05rem; }
.grid { display: grid; gap: 0.85rem; }
.models-grid { grid-template-columns: repeat(auto-fill, minmax(270px, 1fr)); }
.model-card { padding: 1.05rem; }
.model-card.nested {
  background: rgba(6, 18, 26, 0.45);
  box-shadow: none;
}
.model-card h3 { margin: 0 0 0.35rem; font-size: 1.02rem; }
.model-card p { margin: 0 0 0.55rem; color: var(--muted); font-size: 0.85rem; }
.kind {
  display: block;
  width: fit-content;
  margin-inline-end: auto;
  font-size: 0.7rem;
  padding: 0.12rem 0.45rem;
  border-radius: 999px;
  background: rgba(125, 211, 252, 0.12);
  color: var(--accent-2);
  margin-bottom: 0.45rem;
}
.kind.code { background: rgba(245, 185, 66, 0.14); color: var(--warn); }
.row { display: flex; gap: 0.5rem; flex-wrap: wrap; align-items: center; }
.bar { height: 7px; background: rgba(255,255,255,0.06); border-radius: 99px; overflow: hidden; margin: 0.5rem 0; }
.bar > span {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
}
.form-grid { max-width: 640px; display: grid; gap: 0.75rem; }
label.field { display: grid; gap: 0.35rem; font-size: 0.9rem; color: var(--muted); }
.table-wrap { overflow: auto; margin-top: 0.8rem; }
table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
th, td { text-align: right; padding: 0.65rem 0.5rem; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--muted); font-weight: 600; }
code {
  font-size: 0.82rem;
  background: rgba(255,255,255,0.05);
  padding: 0.05rem 0.35rem;
  border-radius: 6px;
}
.login-box {
  max-width: 390px;
  margin: 16vh auto;
  padding: 1.6rem;
}
.login-box h1 { font-family: var(--font-display); margin-top: 0; }

.docs-page { padding: 1.25rem 1.35rem 2rem; max-width: 920px; }
.docs-page h1 { margin: 0.2rem 0 0.6rem; font-size: 1.35rem; }
.docs-toc {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: 1rem 0 1.4rem;
}
.docs-toc a {
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.35rem 0.75rem;
  font-size: 0.85rem;
  background: rgba(255,255,255,0.03);
}
.docs-toc a:hover { color: var(--text); border-color: rgba(46, 201, 179, 0.35); }
.docs-block {
  margin: 0 0 1.4rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
}
.docs-block h2 { margin: 0 0 0.55rem; font-size: 1.08rem; }
.docs-block h3 { margin: 0.9rem 0 0.4rem; font-size: 0.92rem; color: var(--accent-2); }
.docs-block ul, .docs-block ol { margin: 0.4rem 0 0.7rem; padding-inline-start: 1.2rem; color: var(--muted); }
.docs-block li { margin: 0.25rem 0; }
.docs-code {
  direction: ltr;
  text-align: left;
  background: rgba(3, 12, 18, 0.65);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.85rem 1rem;
  overflow: auto;
  font-family: ui-monospace, Consolas, monospace;
  font-size: 0.78rem;
  line-height: 1.55;
  color: #d7e8f5;
  white-space: pre-wrap;
  word-break: break-word;
}

.api-test-wrap {
  display: grid;
  grid-template-columns: minmax(300px, 380px) 1fr;
  gap: 0.9rem;
  align-items: start;
}
.api-test-form { padding: 1.1rem; }
.api-test-form h1 { margin: 0.2rem 0 0.5rem; font-size: 1.2rem; }
.api-test-form select[multiple] { min-height: 96px; }
.api-test-consoles {
  display: grid;
  gap: 0.9rem;
  min-width: 0;
}
.console-panel { padding: 0; overflow: hidden; min-height: 220px; display: flex; flex-direction: column; }
.console-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 0.9rem;
  border-bottom: 1px solid var(--line);
}
.console-box {
  margin: 0;
  padding: 0.9rem;
  flex: 1;
  overflow: auto;
  max-height: min(42vh, 420px);
  font-family: ui-monospace, Consolas, monospace;
  font-size: 0.78rem;
  line-height: 1.55;
  direction: ltr;
  text-align: left;
  white-space: pre-wrap;
  word-break: break-word;
  color: #d7e8f5;
  background: rgba(3, 12, 18, 0.55);
}

.speech-workspace {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(240px, 320px);
  gap: 0.9rem;
  align-items: start;
}
.speech-panel { padding: 1.15rem 1.2rem 1.35rem; }
.speech-head {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: flex-start;
  margin-bottom: 1rem;
}
.speech-head h1 { margin: 0.15rem 0 0.35rem; font-size: 1.35rem; }
.speech-status { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.speech-controls {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
  margin-bottom: 1rem;
}
.speech-recorder {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.65rem;
  padding: 1.25rem 1rem;
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  background: rgba(3, 12, 18, 0.35);
  margin-bottom: 0.9rem;
}
.rec-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  min-width: 180px;
  justify-content: center;
  border: 0;
  border-radius: 999px;
  padding: 0.85rem 1.4rem;
  font: inherit;
  font-weight: 700;
  color: #041018;
  background: linear-gradient(135deg, var(--accent), #5eead4);
  cursor: pointer;
  box-shadow: 0 10px 28px rgba(46, 201, 179, 0.28);
}
.rec-btn.recording {
  background: linear-gradient(135deg, #fb7185, #f43f5e);
  color: #fff;
  box-shadow: 0 10px 28px rgba(244, 63, 94, 0.28);
}
.rec-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: currentColor;
  opacity: 0.85;
}
.rec-btn.recording .rec-dot {
  animation: rec-pulse 1s ease-in-out infinite;
}
@keyframes rec-pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(0.7); opacity: 0.55; }
}
.speech-timer {
  font-family: ui-monospace, Consolas, monospace;
  font-size: 1.1rem;
  letter-spacing: 0.08em;
  color: var(--accent-2);
}
.speech-upload { margin-bottom: 0.9rem; flex-wrap: wrap; }
.speech-result textarea {
  width: 100%;
  min-height: 160px;
  resize: vertical;
  margin-top: 0.4rem;
}
.speech-api-hint { padding: 1.1rem; }
.speech-api-hint h2 { margin: 0.2rem 0 0.55rem; font-size: 1.05rem; }
.kind.speech {
  background: rgba(251, 113, 133, 0.16);
  color: #fecdd3;
}

@media (max-width: 900px) {
  .chat-workspace { grid-template-columns: 1fr; }
  .chat-sidebar { max-height: 210px; }
  .chat-head { flex-direction: column; align-items: stretch; }
  .api-test-wrap { grid-template-columns: 1fr; }
  .speech-workspace { grid-template-columns: 1fr; }
  .speech-controls { grid-template-columns: 1fr; }
}