/* MedGemma Local — modern, medical-themed UI */
:root {
  --bg: #0b1020;
  --surface: #111733;
  --surface-2: #161e3f;
  --border: #243057;
  --text: #e7ecff;
  --muted: #8a98c2;
  --primary: #6aa8ff;
  --primary-2: #8b5cf6;
  --accent: #22d3ee;
  --ok: #34d399;
  --warn: #fbbf24;
  --error: #f87171;
  --user-bubble: linear-gradient(135deg, #2563eb 0%, #6d28d9 100%);
  --ai-bubble: #1a2148;
  --radius: 14px;
  --radius-sm: 10px;
  --shadow: 0 10px 30px rgba(0,0,0,0.35), 0 2px 6px rgba(0,0,0,0.18);
  --font: -apple-system, BlinkMacSystemFont, "Inter", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f3f6ff;
    --surface: #ffffff;
    --surface-2: #f7faff;
    --border: #dde4f3;
    --text: #0e1735;
    --muted: #5a6886;
    --primary: #2563eb;
    --primary-2: #7c3aed;
    --ai-bubble: #eef2ff;
    --shadow: 0 8px 24px rgba(15,23,42,0.08), 0 2px 4px rgba(15,23,42,0.04);
  }
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background:
    radial-gradient(1200px 600px at 80% -10%, rgba(139,92,246,0.18), transparent 60%),
    radial-gradient(900px 500px at -10% 110%, rgba(34,211,238,0.14), transparent 60%),
    var(--bg);
  font-size: 15px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  overflow: hidden;   /* page never scrolls; scrolling happens inside .chat / .side-panel */
}
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

.app {
  max-width: 1180px;
  margin: 0 auto;
  padding: 16px 20px 0;
  display: flex;
  flex-direction: column;
  height: 100vh;       /* fixed viewport height */
  height: 100dvh;      /* honor mobile viewport changes */
  min-height: 0;
}

/* TOPBAR */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 18px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  margin-bottom: 14px;
}
.brand { display: flex; align-items: center; gap: 12px; }
.logo {
  width: 38px; height: 38px;
  display: grid; place-items: center;
  border-radius: 10px;
  color: white;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-2) 100%);
  box-shadow: 0 4px 10px rgba(139,92,246,0.35);
}
.title h1 {
  margin: 0;
  font-size: 17px;
  letter-spacing: -0.01em;
}
.title .subtitle {
  margin: 1px 0 0;
  font-size: 12.5px;
  color: var(--muted);
}
.status {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 12px;
  font-size: 12.5px;
  border-radius: 999px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--muted);
  white-space: nowrap;
}
.status-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--muted);
  box-shadow: 0 0 0 0 rgba(106,168,255,0.7);
}
.status.loading .status-dot { background: var(--warn); animation: pulse 1.2s infinite; }
.status.ready .status-dot { background: var(--ok); }
.status.error .status-dot { background: var(--error); }
.status.generating .status-dot { background: var(--accent); animation: pulse 1.2s infinite; }
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 currentColor; }
  100% { box-shadow: 0 0 0 8px transparent; }
}

/* LAYOUT */
.layout {
  display: grid;
  grid-template-columns: minmax(0,1fr) 320px;
  gap: 14px;
  flex: 1 1 auto;
  min-height: 0;        /* allow children to shrink so .chat can scroll internally */
  overflow: hidden;
}
@media (max-width: 900px) {
  .layout { grid-template-columns: 1fr; }
}

@media (max-width: 700px) {
  .app {
    padding: 8px 8px 0;
  }

  .topbar {
    padding: 10px 12px;
    flex-wrap: wrap;
    align-items: flex-start;
  }

  .title h1 {
    font-size: 16px;
  }

  .title .subtitle {
    font-size: 11.5px;
    line-height: 1.35;
  }

  .status {
    width: 100%;
    justify-content: center;
  }

  .layout {
    display: flex;
    flex-direction: column;
    gap: 10px;
    min-height: 0;
    overflow: hidden;
  }

  .panel {
    border-radius: 12px;
  }

  .chat-panel {
    flex: 1 1 auto;
    min-height: 52dvh;
  }

  .side-panel {
    flex: 0 0 auto;
    max-height: 40dvh;
  }

  .chat {
    padding: 12px;
    gap: 10px;
  }

  .msg .bubble {
    max-width: 88%;
    padding: 9px 12px;
    font-size: 14px;
  }

  .composer {
    grid-template-columns: auto 1fr auto;
    padding: 10px;
    gap: 6px;
  }

  .composer textarea {
    font-size: 16px;
    min-height: 48px;
    max-height: 34vh;
  }

  .attach-btn,
  .send-btn {
    height: 44px;
    min-width: 44px;
    border-radius: 12px;
  }

  .model-card,
  .params,
  .muted {
    padding-left: 12px;
    padding-right: 12px;
  }

  .model-switcher select {
    font-size: 15px;
  }

  .kv code {
    max-width: 180px;
  }
}
.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  display: flex; flex-direction: column;
  overflow: hidden;
  min-height: 0;
}
.side-panel { overflow-y: auto; }
.panel-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(0deg, transparent, rgba(255,255,255,0.02)), var(--surface);
}
.panel-head h2 {
  margin: 0; font-size: 13px; letter-spacing: 0.04em; text-transform: uppercase; color: var(--muted);
}

/* CHAT */
.chat-panel { min-height: 0; }
.chat {
  flex: 1 1 0;
  min-height: 0;
  padding: 16px;
  overflow-y: auto;
  display: flex; flex-direction: column; gap: 12px;
  scroll-behavior: smooth;
}
.msg { display: flex; gap: 10px; align-items: flex-start; }
.msg.user { flex-direction: row-reverse; }
.msg .avatar {
  width: 30px; height: 30px; border-radius: 9px;
  display: grid; place-items: center;
  font-size: 11px; font-weight: 700; color: white;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  flex-shrink: 0;
}
.msg.user .avatar { background: linear-gradient(135deg, #ef4444, #f59e0b); }
.msg .bubble {
  max-width: min(78%, 720px);
  padding: 10px 14px;
  border-radius: 14px;
  background: var(--ai-bubble);
  border: 1px solid var(--border);
  word-wrap: break-word;
  overflow-wrap: anywhere;
  white-space: pre-wrap;
}
.msg.user .bubble {
  background: var(--user-bubble);
  border-color: transparent;
  color: white;
}
.msg .bubble p { margin: 0 0 8px; }
.msg .bubble p:last-child { margin-bottom: 0; }
.msg .bubble pre {
  background: rgba(0,0,0,0.25);
  padding: 10px; border-radius: 8px; overflow-x: auto; margin: 8px 0; font-family: var(--mono); font-size: 12.5px;
}
.msg .bubble code { font-family: var(--mono); font-size: 12.5px; }
.msg .bubble .attachment-preview {
  display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px;
}
.msg .bubble .attachment-preview img {
  max-width: 160px; max-height: 160px;
  border-radius: 8px; border: 1px solid rgba(255,255,255,0.15);
}
.msg .bubble .attachment-preview .file-chip {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 8px; border-radius: 8px;
  background: rgba(255,255,255,0.10); font-size: 12px;
}
.cursor::after { content: "▍"; opacity: 0.6; animation: blink 1s steps(2,start) infinite; }
@keyframes blink { to { visibility: hidden; } }

/* ATTACHMENTS PRE-SEND */
.attachments {
  display: flex; flex-wrap: wrap; gap: 8px;
  padding: 10px 16px;
  border-top: 1px solid var(--border);
  background: var(--surface-2);
}
.chip {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 10px;
  border-radius: 999px;
  background: var(--surface);
  border: 1px solid var(--border);
  font-size: 12.5px;
  max-width: 260px;
}
.chip img { width: 26px; height: 26px; border-radius: 6px; object-fit: cover; }
.chip .chip-name { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 160px; }
.chip .chip-remove {
  border: 0; background: transparent; color: var(--muted); cursor: pointer; font-size: 14px; line-height: 1;
}
.chip .chip-remove:hover { color: var(--error); }

/* COMPOSER */
.composer {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: end;
  gap: 8px;
  padding: 10px 12px 12px;
  border-top: 1px solid var(--border);
  background: var(--surface);
}
.composer textarea {
  resize: none;
  background: var(--surface-2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 10px 12px;
  font-family: inherit;
  font-size: 14.5px;
  line-height: 1.4;
  max-height: 180px;
  overflow-y: auto;
  outline: none;
}
.composer textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(106,168,255,0.18);
}
.attach-btn, .send-btn {
  height: 40px; min-width: 40px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--text);
  cursor: pointer;
  display: inline-flex; align-items: center; justify-content: center;
  gap: 6px; padding: 0 12px;
  transition: transform .08s ease, background .12s ease, border-color .12s ease;
}
.attach-btn:hover, .send-btn:hover { border-color: var(--primary); }
.attach-btn { padding: 0 10px; }
.send-btn {
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  color: white; border-color: transparent;
  font-weight: 600;
}
.send-btn[disabled] {
  opacity: .5; cursor: not-allowed;
  background: var(--surface-2); color: var(--muted); border: 1px solid var(--border);
}
.send-btn:not([disabled]):active { transform: translateY(1px); }

/* SIDE PANEL */
.side-panel .panel-head:not(:first-child) { border-top: 1px solid var(--border); }
.model-card { padding: 14px 16px; display: flex; flex-direction: column; gap: 10px; }
.model-switcher {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 12.5px;
  color: var(--muted);
}
.model-switcher span {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.model-switcher select {
  width: 100%;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--text);
  padding: 9px 10px;
  font: inherit;
  cursor: pointer;
}
.kv {
  display: flex; justify-content: space-between; align-items: center;
  font-size: 12.5px; color: var(--muted);
  gap: 10px;
}
.kv code {
  color: var(--text);
  font-family: var(--mono);
  background: var(--surface-2);
  border: 1px solid var(--border);
  padding: 2px 6px;
  border-radius: 6px;
  font-size: 11.5px;
  max-width: 200px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.primary-btn {
  margin-top: 4px;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  color: white;
  border: none;
  padding: 10px 12px;
  border-radius: 10px;
  font-weight: 600;
  cursor: pointer;
}
.primary-btn[disabled] {
  cursor: not-allowed; opacity: .6;
}
.ghost-btn {
  background: transparent;
  color: var(--muted);
  border: 1px solid var(--border);
  padding: 4px 10px;
  border-radius: 8px;
  font-size: 12px;
  cursor: pointer;
}
.ghost-btn:hover { color: var(--text); border-color: var(--primary); }

.loader { padding: 8px 0 0; }
.loader-label {
  display: flex; justify-content: space-between; font-size: 12px; color: var(--muted);
  margin-bottom: 6px;
}
.bar {
  height: 6px; background: var(--surface-2); border-radius: 4px; overflow: hidden;
  border: 1px solid var(--border);
}
.bar-fill {
  height: 100%; width: 0%;
  background: linear-gradient(90deg, var(--accent), var(--primary));
  transition: width .2s ease;
}
.loader-note { font-size: 11.5px; color: var(--muted); margin: 8px 0 0; }

/* PARAMETER DIALS */
.params { padding: 8px 16px 14px; display: flex; flex-direction: column; gap: 12px; }
.param label {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 8px;
  font-size: 12.5px;
  color: var(--text);
  margin-bottom: 4px;
}
.param label .hint {
  color: var(--muted);
  font-size: 11px;
  font-weight: 400;
  text-align: right;
  flex: 1;
}
.param-row {
  display: flex;
  align-items: center;
  gap: 10px;
}
.param-row output {
  font-family: var(--mono);
  font-size: 12px;
  min-width: 44px;
  text-align: right;
  color: var(--text);
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 2px 6px;
}
.param input[type="range"] {
  flex: 1;
  -webkit-appearance: none;
  appearance: none;
  background: transparent;
  height: 22px;
  margin: 0;
  cursor: pointer;
}
.param input[type="range"]::-webkit-slider-runnable-track {
  height: 4px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--primary), var(--primary-2));
  border: 1px solid var(--border);
}
.param input[type="range"]::-moz-range-track {
  height: 4px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--primary), var(--primary-2));
  border: 1px solid var(--border);
}
.param input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--surface);
  border: 2px solid var(--primary);
  margin-top: -7px;
  box-shadow: 0 1px 4px rgba(0,0,0,.3);
  cursor: grab;
}
.param input[type="range"]::-moz-range-thumb {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--surface);
  border: 2px solid var(--primary);
  box-shadow: 0 1px 4px rgba(0,0,0,.3);
  cursor: grab;
}
.param input[type="range"]:focus { outline: none; }
.param input[type="range"]:focus::-webkit-slider-thumb {
  box-shadow: 0 0 0 4px rgba(106,168,255,0.25);
}

.tips { margin: 0; padding: 12px 16px 0 30px; }
.tips li { font-size: 12.5px; color: var(--muted); margin-bottom: 8px; }

.muted { color: var(--muted); font-size: 12.5px; padding: 12px 16px 16px; }

.footer {
  text-align: center;
  color: var(--muted);
  font-size: 12px;
  padding: 10px 0;
  flex: 0 0 auto;
}

/* SCROLLBARS */
.chat::-webkit-scrollbar, textarea::-webkit-scrollbar { width: 10px; }
.chat::-webkit-scrollbar-thumb, textarea::-webkit-scrollbar-thumb {
  background: var(--border); border-radius: 10px;
}
.chat::-webkit-scrollbar-thumb:hover, textarea::-webkit-scrollbar-thumb:hover { background: var(--muted); }