@import url("https://fonts.googleapis.com/css2?family=Source+Sans+3:wght@400;500;600;700&family=Spectral:wght@500;600;700&family=IBM+Plex+Mono:wght@400;500&display=swap");

    :root {
      color-scheme: light;
      --paper: #f7f1e7;
      --paper-accent: #efe7d7;
      --ink: #1c1b19;
      --muted-ink: #4d4a46;
      --accent: #b64225;
      --accent-dark: #8f2f18;
      --border: #d7cbb5;
      --panel: #fffaf2;
      --shadow: 0 18px 50px rgba(40, 32, 18, 0.18);
    }
    * {
      box-sizing: border-box;
    }
    body {
      margin: 0;
      font-family: "Source Sans 3", "Segoe UI", sans-serif;
      background:
        radial-gradient(circle at top, rgba(255, 255, 255, 0.85), transparent 60%),
        linear-gradient(160deg, var(--paper), var(--paper-accent));
      color: var(--ink);
      min-height: 100vh;
      line-height: 1.6;
    }
    .app {
      max-width: none;
      margin: 0 auto;
      padding: 36px 22px 54px;
    }
    #roomPrompt {
      max-width: 760px;
    }
    #viewerSection {
      width: 100%;
    }
    #mainTabBar {
      width: 100%;
      margin-bottom: 0;
    }
    header {
      margin-bottom: 26px;
    }
    h1 {
      margin: 0 0 6px;
      font-family: "Spectral", Georgia, serif;
      font-size: clamp(2rem, 3vw, 2.6rem);
      letter-spacing: 0.01em;
    }
    .room-inline {
      display: inline-block;
      margin-left: 8px;
      font-family: "Source Sans 3", "Segoe UI", sans-serif;
      font-size: 0.45em;
      font-weight: 600;
      color: var(--muted-ink);
      vertical-align: middle;
    }
    .room-inline.hidden {
      display: none;
    }
    .card {
      --card-pad: 22px;
      background: var(--panel);
      border-radius: 16px;
      border: 1px solid var(--border);
      padding: var(--card-pad);
      margin-bottom: 18px;
      box-shadow: var(--shadow);
    }
    label {
      display: block;
      font-size: 0.95rem;
      font-weight: 600;
      margin-bottom: 6px;
      letter-spacing: 0.01em;
    }
    input {
      width: 100%;
      padding: 11px 12px;
      border-radius: 10px;
      border: 1px solid var(--border);
      font-size: 1rem;
      background: #fffdf7;
      color: var(--ink);
    }
    input:focus {
      outline: 2px solid rgba(182, 66, 37, 0.25);
      border-color: var(--accent);
    }
    button {
      appearance: none;
      border: none;
      border-radius: 999px;
      padding: 10px 18px;
      font-size: 1rem;
      font-weight: 600;
      cursor: pointer;
      background: var(--accent);
      color: #fffaf2;
      box-shadow: 0 10px 18px rgba(182, 66, 37, 0.25);
      transition: transform 0.15s ease, box-shadow 0.15s ease;
    }
    button:hover {
      transform: translateY(-1px);
      box-shadow: 0 14px 24px rgba(182, 66, 37, 0.25);
      background: var(--accent-dark);
    }
    button[disabled] {
      opacity: 0.6;
      cursor: not-allowed;
      box-shadow: none;
    }
    .actions {
      margin-top: 12px;
      display: flex;
      gap: 12px;
      flex-wrap: wrap;
    }
    .status {
      margin-top: 12px;
      font-size: 0.95rem;
      font-weight: 600;
      color: var(--muted-ink);
    }
    .status.error {
      color: #8f2f18;
    }
    .status.success {
      color: #1f5b33;
    }
    .viewer-header {
      margin-bottom: 12px;
      font-weight: 600;
      font-size: 1rem;
    }
    .viewer-toggle {
      display: inline-flex;
      gap: 8px;
      margin-bottom: 18px;
      padding: 6px;
      border-radius: 999px;
      background: rgba(214, 196, 170, 0.4);
    }
    .viewer-toggle button {
      border: 1px solid transparent;
      background: transparent;
      color: var(--ink);
      padding: 6px 14px;
      border-radius: 999px;
      font-size: 0.95rem;
      box-shadow: none;
    }
    .viewer-toggle button.active {
      background: var(--ink);
      color: #fdf9f2;
      border-color: var(--ink);
    }
    #mainTabToggle {
      display: flex;
      gap: 0;
      margin: 0 0 -1px;
      padding: 0 14px;
      border-radius: 0;
      background: transparent;
    }
    #mainTabToggle button {
      border: 1px solid transparent;
      border-bottom: none;
      border-radius: 12px 12px 0 0;
      background: transparent;
      color: var(--muted-ink);
      padding: 8px 16px;
      margin-bottom: -1px;
    }
    #mainTabToggle button.active {
      background: var(--panel);
      color: var(--ink);
      border-color: var(--border);
      border-bottom-color: var(--panel);
    }
    .transcripts {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 14px;
    }
    .pdf-viewer {
      display: flex;
      flex-direction: column;
      gap: 12px;
      width: 100%;
    }
    .text-viewer {
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .text-message {
      border: 1px solid var(--border);
      border-radius: 12px;
      background: #fffdf8;
      padding: 18px;
      font-size: 1.05rem;
      white-space: pre-wrap;
      word-break: break-word;
    }
    #pdfCanvas {
      display: block;
      width: 100%;
      max-width: 100%;
      height: auto;
    }
    .panel {
      display: flex;
      flex-direction: column;
      gap: 8px;
    }
    .panel-label {
      font-weight: 600;
      font-size: 0.95rem;
      text-transform: uppercase;
      letter-spacing: 0.08em;
      color: var(--muted-ink);
    }
    pre {
      margin: 0;
      min-height: 280px;
      padding: 18px;
      border-radius: 12px;
      border: 1px solid var(--border);
      background: #fffdf8;
      font-family: "IBM Plex Mono", "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
      font-size: 0.96rem;
      line-height: 1.6;
      white-space: pre-wrap;
      word-break: break-word;
    }
    .status:empty {
      display: none;
    }
    .hint {
      margin-top: 8px;
      color: var(--muted-ink);
      font-size: 0.85rem;
    }
    .hidden {
      display: none !important;
    }
    .paragraph {
      margin: 0 0 14px;
      padding: 4px 0;
      transition: color 0.2s ease;
    }
    .paragraph:last-child {
      margin-bottom: 0;
    }
    .paragraph-edited {
      color: var(--accent);
    }
    .resume-scroll-button {
      position: fixed;
      right: 24px;
      bottom: 32px;
      border: 1px solid var(--border);
      border-radius: 999px;
      padding: 10px 16px;
      display: none;
      align-items: center;
      gap: 8px;
      font-weight: 600;
      font-size: 0.95rem;
      background: rgba(255, 251, 244, 0.95);
      color: var(--ink);
      box-shadow: 0 16px 26px rgba(43, 32, 14, 0.2);
      cursor: pointer;
      z-index: 10;
    }
    .resume-scroll-button svg {
      width: 18px;
      height: 18px;
      fill: currentColor;
    }
    .resume-scroll-button.visible {
      display: inline-flex;
    }
    @media (max-width: 640px) {
      .app {
        padding: 22px 16px 32px;
      }
      .card {
        --card-pad: 14px;
        padding: var(--card-pad);
        border-radius: 12px;
      }
      .viewer-toggle {
        margin-bottom: 12px;
      }
      pre {
        min-height: 200px;
        padding: 14px;
      }
    }