@import url('https://fonts.googleapis.com/css2?family=DM+Mono:wght@400;500&family=Syne:wght@400;600;700&display=swap');

  :root {
    --accent: #2c3e50;
    --accent-dark: #1a252f;
    --accent-light: #eef1f5;
    --ink: #1a1a1a;
    --ink2: #444;
    --ink3: #888;
    --border: #e0e0e0;
    --bg: #f7f6f4;
    --white: #ffffff;
    --success: #1a7a4a;
    --success-bg: #edf7f1;
    --mono: 'DM Mono', monospace;
    --sans: 'Syne', sans-serif;
  }

  *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

  body {
    font-family: var(--sans);
    background: var(--bg);
    color: var(--ink);
    min-height: 100vh;
  }

  /* ── Top bar ── */
  .topbar {
    background: var(--ink);
    color: #fff;
    padding: 0 2rem;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 100;
  }
  .topbar-logo { font-size: 15px; font-weight: 700; letter-spacing: -0.3px; }
  .topbar-logo span { color: var(--accent); }
  .topbar-sub { font-size: 11px; color: #888; font-family: var(--mono); letter-spacing: 0.05em; }

  /* ── Layout ── */
  .shell { max-width: 860px; margin: 0 auto; padding: 2rem 1rem 4rem; }

  /* ── Section headers ── */
  .section-head {
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 2rem 0 1rem;
  }
  .section-num {
    width: 26px; height: 26px; border-radius: 50%;
    background: var(--accent);
    color: #fff;
    font-size: 12px;
    font-weight: 700;
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
  }
  .section-title { font-size: 16px; font-weight: 700; letter-spacing: -0.2px; }

  /* ── Psychrometrics toggle ── */
  .psychro-toggle-wrap {
    display: flex; align-items: center; gap: 8px;
    margin-left: auto; cursor: pointer; user-select: none;
  }
  .psychro-toggle-wrap input[type=checkbox] { display: none; }
  .psychro-toggle-track {
    width: 36px; height: 20px; border-radius: 10px;
    background: #ccc; position: relative; transition: background 0.2s;
    flex-shrink: 0;
  }
  .psychro-toggle-track::after {
    content: ''; position: absolute;
    width: 14px; height: 14px; border-radius: 50%;
    background: #fff; top: 3px; left: 3px;
    transition: transform 0.2s; box-shadow: 0 1px 3px rgba(0,0,0,.2);
  }
  .psychro-toggle-wrap input:checked + .psychro-toggle-track { background: var(--accent); }
  .psychro-toggle-wrap input:checked + .psychro-toggle-track::after { transform: translateX(16px); }
  .psychro-toggle-label { font-size: 13px; font-weight: 600; color: var(--ink2); font-family: var(--sans); }

  /* ── Cards ── */
  .card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1.25rem;
    margin-bottom: 1rem;
  }

  /* ── Form grid ── */
  .grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
  .grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 12px; }
  .grid-4 { display: grid; grid-template-columns: 1fr 1fr 1fr 1fr; gap: 10px; }
  .span-2 { grid-column: span 2; }

  .field { display: flex; flex-direction: column; gap: 5px; }
  .field label {
    font-size: 11px;
    font-weight: 600;
    color: var(--ink3);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    font-family: var(--mono);
  }
  .field input, .field select {
    height: 38px;
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 0 10px;
    font-size: 14px;
    font-family: var(--sans);
    color: var(--ink);
    background: #fafafa;
    transition: border-color 0.15s;
    width: 100%;
  }
  .field input:focus, .field select:focus {
    outline: none;
    border-color: var(--accent);
    background: var(--white);
  }

  /* ── Room card ── */
  .room-card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 12px;
    margin-bottom: 1rem;
    overflow: hidden;
  }
  .room-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 1.25rem;
    background: #fafafa;
    border-bottom: 1px solid var(--border);
    cursor: pointer;
    user-select: none;
  }
  .room-header-left { display: flex; align-items: center; gap: 10px; }
  .room-tag {
    font-size: 11px;
    font-weight: 600;
    font-family: var(--mono);
    background: var(--accent-light);
    color: var(--accent);
    padding: 3px 8px;
    border-radius: 5px;
  }
  .room-name-display { font-size: 14px; font-weight: 600; }
  .room-body { padding: 1.25rem; }

  .remove-btn {
    background: none;
    border: 1px solid #ddd;
    border-radius: 6px;
    padding: 4px 10px;
    font-size: 12px;
    color: #999;
    cursor: pointer;
    transition: all 0.15s;
    font-family: var(--sans);
  }
  .remove-btn:hover { border-color: var(--accent); color: var(--accent); }

  /* ── Material rows ── */
  .material-row {
    display: grid;
    grid-template-columns: 1fr 70px 70px auto 32px;
    gap: 8px;
    align-items: center;
    margin-bottom: 8px;
  }
  .material-row label { font-size: 12px; color: var(--ink2); font-family: var(--mono); }
  .material-row input {
    height: 34px;
    border: 1px solid var(--border);
    border-radius: 7px;
    padding: 0 10px;
    font-size: 13px;
    font-family: var(--mono);
    background: #fafafa;
    width: 100%;
  }
  .material-row input:focus { outline: none; border-color: var(--accent); background: #fff; }
  .del-mat {
    width: 28px; height: 28px;
    border: 1px solid #eee;
    border-radius: 6px;
    background: none;
    cursor: pointer;
    font-size: 14px;
    color: #bbb;
    display: flex; align-items: center; justify-content: center;
    transition: all 0.15s;
  }
  .del-mat:hover { border-color: var(--accent); color: var(--accent); }

  .add-material-btn {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-size: 12px;
    color: var(--accent);
    background: none;
    border: 1px dashed #f0a090;
    border-radius: 7px;
    padding: 5px 12px;
    cursor: pointer;
    font-family: var(--sans);
    font-weight: 600;
    margin-top: 4px;
    transition: background 0.15s;
  }
  .add-material-btn:hover { background: var(--accent-light); }

  /* ── Psychrometrics ── */
  .psychro-grid {
    display: grid;
    grid-template-columns: 54px 1fr 1fr 68px 84px;
    gap: 8px;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid #f0f0f0;
  }
  .psychro-val {
    background: #fafafa;
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 8px 10px;
  }
  .psychro-val label { font-size: 10px; color: var(--ink3); font-family: var(--mono); display: block; margin-bottom: 4px; text-transform: uppercase; }
  .psychro-val .val { font-size: 15px; font-weight: 600; font-family: var(--mono); color: var(--ink); }
  .psychro-val .val.computed { color: var(--accent); }

  /* ── Buttons ── */
  .btn-add-room {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    padding: 12px;
    background: none;
    border: 2px dashed #ccc;
    border-radius: 12px;
    font-size: 14px;
    font-weight: 600;
    color: #888;
    cursor: pointer;
    font-family: var(--sans);
    transition: all 0.15s;
    margin-bottom: 1rem;
  }
  .btn-add-room:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-light); }

  .btn-generate {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    width: 100%;
    padding: 16px;
    background: var(--accent);
    color: #fff;
    border: none;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    font-family: var(--sans);
    transition: background 0.15s;
    margin-top: 1.5rem;
  }
  .btn-generate:hover { background: var(--accent-dark); }
  .btn-generate:disabled { background: #ccc; cursor: not-allowed; }

  /* ── Preview table ── */
  .preview-wrap { margin-top: 1.5rem; }
  .preview-title { font-size: 13px; font-weight: 700; font-family: var(--mono); color: var(--ink3); text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 10px; }
  .preview-table { width: 100%; border-collapse: collapse; font-size: 12px; font-family: var(--mono); }
  .preview-table th {
    background: var(--ink);
    color: #fff;
    padding: 7px 10px;
    text-align: left;
    font-weight: 600;
    font-size: 11px;
  }
  .preview-table td { padding: 6px 10px; border-bottom: 1px solid #f0f0f0; }
  .preview-table tr:nth-child(even) td { background: #fafafa; }
  .preview-table .dry { color: var(--success); font-weight: 600; }
  .preview-table .wet { color: var(--accent); }

  /* ── Equipment ── */
  .equip-row {
    display: grid;
    grid-template-columns: 180px 80px 32px;
    gap: 8px;
    align-items: center;
    margin-bottom: 8px;
  }
  .add-equip-btn {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-size: 12px;
    color: #555;
    background: none;
    border: 1px dashed #ccc;
    border-radius: 7px;
    padding: 5px 12px;
    cursor: pointer;
    font-family: var(--sans);
    font-weight: 600;
    margin-top: 4px;
    transition: background 0.15s;
  }
  .add-equip-btn:hover { background: #f5f5f5; }




  /* ── JobNimbus panel ── */
  .jn-panel {
    background: var(--white);
    border: 1.5px solid #e8e0ff;
    border-radius: 12px;
    padding: 1rem 1.25rem;
    margin-bottom: 1.25rem;
  }
  .jn-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 0.75rem;
  }
  .jn-logo-badge {
    background: #2563eb;
    color: #fff;
    font-size: 10px;
    font-weight: 700;
    font-family: var(--mono);
    letter-spacing: 0.08em;
    padding: 3px 8px;
    border-radius: 5px;
  }
  .jn-label {
    font-size: 12px;
    font-weight: 700;
    color: var(--ink2);
    font-family: var(--mono);
    text-transform: uppercase;
    letter-spacing: 0.05em;
  }
  .jn-search-row {
    display: flex;
    gap: 8px;
    align-items: center;
  }
  .jn-input {
    flex: 1;
    height: 38px;
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 0 12px;
    font-size: 14px;
    font-family: var(--sans);
    color: var(--ink);
    background: #fafafa;
    outline: none;
    transition: border-color 0.15s;
  }
  .jn-input:focus { border-color: #2563eb; background: #fff; }
  .jn-btn {
    height: 38px;
    padding: 0 16px;
    background: #2563eb;
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 13px;
    font-weight: 700;
    font-family: var(--sans);
    cursor: pointer;
    white-space: nowrap;
    transition: background 0.15s;
  }
  .jn-btn:hover { background: #1d4ed8; }
  .jn-btn:disabled { background: #93c5fd; cursor: not-allowed; }
  .jn-results {
    margin-top: 8px;
    border: 1px solid var(--border);
    border-radius: 8px;
    overflow: hidden;
    display: none;
  }
  .jn-result-item {
    padding: 10px 14px;
    cursor: pointer;
    border-bottom: 1px solid #f0f0f0;
    transition: background 0.1s;
  }
  .jn-result-item:last-child { border-bottom: none; }
  .jn-result-item:hover { background: #eff6ff; }
  .jn-result-name {
    font-size: 14px;
    font-weight: 600;
    color: var(--ink);
  }
  .jn-result-meta {
    font-size: 11px;
    color: var(--ink3);
    font-family: var(--mono);
    margin-top: 2px;
  }
  .jn-status {
    font-size: 12px;
    color: var(--ink3);
    font-family: var(--mono);
    margin-top: 6px;
    min-height: 18px;
  }
  .jn-status.success { color: #166534; }
  .jn-status.error { color: var(--accent); }
  .jn-status.loading { color: #2563eb; }

  /* ── Review modal (pdf-preview still uses these) ── */
  .review-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.55);
    display: flex;
    align-items: flex-start;
    justify-content: center;
    z-index: 998;
    overflow-y: auto;
    padding: 2rem 1rem;
  }
  .review-box {
    background: var(--bg);
    border-radius: 14px;
    width: 100%;
    max-width: 920px;
    padding: 1.5rem;
    position: relative;
  }
  .review-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.25rem;
  }
  .review-title { font-size: 18px; font-weight: 700; letter-spacing: -0.3px; }
  .pdf-preview-box { max-width: 860px; }

  /* ── Full-page review editor ── */
  #review-modal {
    position: fixed;
    inset: 0;
    z-index: 998;
    background: var(--bg);
    flex-direction: column;
    overflow: hidden;
  }
  .rp-header {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 10px 20px;
    background: var(--accent-dark, #1a252f);
    color: #fff;
    border-bottom: 2px solid var(--accent);
  }
  .rp-back {
    background: none;
    border: 1px solid rgba(255,255,255,0.25);
    color: #fff;
    border-radius: 6px;
    padding: 5px 12px;
    font-size: 13px;
    font-family: var(--sans);
    cursor: pointer;
    white-space: nowrap;
  }
  .rp-back:hover { background: rgba(255,255,255,0.12); }
  .rp-title {
    font-size: 15px;
    font-weight: 700;
    letter-spacing: 0.2px;
    white-space: nowrap;
  }
  .rp-meta {
    flex: 1;
    font-size: 12px;
    color: rgba(255,255,255,0.55);
    font-family: var(--mono);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }
  .rp-export {
    display: flex;
    align-items: center;
    gap: 7px;
    background: var(--accent);
    color: #fff;
    border: none;
    border-radius: 7px;
    padding: 8px 16px;
    font-size: 13px;
    font-weight: 600;
    font-family: var(--sans);
    cursor: pointer;
    white-space: nowrap;
  }
  .rp-export:hover { filter: brightness(1.15); }
  .rp-room-nav {
    flex-shrink: 0;
    display: flex;
    gap: 6px;
    padding: 8px 20px;
    background: #fff;
    border-bottom: 1px solid var(--border);
    overflow-x: auto;
    scrollbar-width: none;
  }
  .rp-room-nav::-webkit-scrollbar { display: none; }
  .rp-room-chip {
    flex-shrink: 0;
    padding: 4px 12px;
    border-radius: 20px;
    border: 1px solid var(--border);
    font-size: 11px;
    font-family: var(--mono);
    font-weight: 600;
    color: var(--ink2);
    background: #fff;
    cursor: pointer;
    text-decoration: none;
    white-space: nowrap;
    transition: background 0.12s, color 0.12s, border-color 0.12s;
  }
  .rp-room-chip:hover {
    background: var(--accent-light);
    border-color: var(--accent);
    color: var(--accent);
  }
  .rp-content {
    flex: 1;
    overflow-y: auto;
    padding: 24px 24px 60px;
  }
  .rp-content .review-room-block { margin-bottom: 36px; }
  .rp-content .review-room-label {
    font-size: 11px;
    font-weight: 700;
    font-family: var(--mono);
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 8px;
    padding-bottom: 6px;
    border-bottom: 2px solid var(--accent-light);
  }
  .rp-table-wrap {
    overflow-x: auto;
    border-radius: 8px;
    border: 1px solid var(--border);
    margin-bottom: 10px;
  }
  .rp-table-wrap .review-table {
    border-radius: 0;
    border: none;
    min-width: max-content;
  }
  .rp-content .review-cell-input { width: 58px; font-size: 12px; }
  .rp-col-std, .rp-col-init { color: var(--ink3) !important; font-size: 11px; text-align: center; }
  .rp-week-label {
    font-size: 10px;
    font-weight: 700;
    font-family: var(--mono);
    color: var(--ink3);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin: 14px 0 4px;
  }
  @media (max-width: 600px) {
    .rp-header { flex-wrap: wrap; gap: 8px; padding: 10px 14px; }
    .rp-meta { order: 3; flex-basis: 100%; }
    .rp-content { padding: 14px 12px 60px; }
  }

/* ── Material autocomplete ───────────────────────────────────────────────── */
.mat-input-wrap { position: relative; }
.mat-suggestions {
  display: none;
  position: absolute;
  top: calc(100% + 2px);
  left: 0;
  right: 0;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: 0 4px 16px rgba(0,0,0,0.13);
  z-index: 200;
  max-height: 220px;
  overflow-y: auto;
}
.mat-suggestion-item {
  padding: 8px 12px;
  font-size: 13px;
  font-family: var(--sans);
  cursor: pointer;
  color: var(--ink);
}
.mat-suggestion-item:hover,
.mat-suggestion-item.active { background: var(--accent-light); color: var(--accent); }
  #send-jn-btn:disabled { background: #aaa; cursor: not-allowed; }
  .review-subtitle { font-size: 12px; color: var(--ink3); margin-top: 2px; font-family: var(--mono); }
  .review-room-block { margin-bottom: 1.25rem; }
  .review-room-label {
    font-size: 12px;
    font-weight: 700;
    font-family: var(--mono);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--accent);
    margin-bottom: 6px;
  }
  .review-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 12px;
    font-family: var(--mono);
    background: #fff;
    border-radius: 8px;
    overflow: hidden;
  }
  .review-table th {
    background: var(--ink);
    color: #fff;
    padding: 6px 8px;
    text-align: center;
    font-size: 10px;
    font-weight: 600;
    white-space: nowrap;
  }
  .review-table th:first-child,
  .review-table th:nth-child(2) { text-align: left; }
  .review-table td {
    padding: 4px 6px;
    border-bottom: 1px solid #f0f0f0;
    text-align: center;
  }
  .review-table td:first-child,
  .review-table td:nth-child(2) { text-align: left; color: var(--ink2); }
  .review-table tr:last-child td { border-bottom: none; }
  .review-table tr:nth-child(even) td { background: #fafafa; }
  .review-cell-input {
    width: 52px;
    text-align: center;
    border: 1px solid transparent;
    border-radius: 5px;
    padding: 2px 4px;
    font-size: 12px;
    font-family: var(--mono);
    background: transparent;
    color: var(--ink);
    transition: border-color 0.15s, background 0.15s;
  }
  .review-cell-input:hover { border-color: #ddd; background: #fff; }
  .review-cell-input:focus { outline: none; border-color: var(--accent); background: #fff; }
  .review-cell-demo {
    font-size: 10px;
    font-weight: 700;
    color: #b07800;
    font-family: var(--mono);
  }
  .review-btn-row {
    display: flex;
    gap: 10px;
    margin-top: 1.25rem;
  }
  .review-btn-back {
    flex: 1;
    padding: 13px;
    background: transparent;
    border: 1px solid #ddd;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 600;
    color: #666;
    cursor: pointer;
    font-family: var(--sans);
    transition: background 0.15s;
  }
  .review-btn-back:hover { background: #f5f5f5; }
  .review-btn-pdf {
    flex: 2;
    padding: 13px;
    background: var(--accent);
    color: #fff;
    border: none;
    border-radius: 10px;
    font-size: 15px;
    font-weight: 700;
    cursor: pointer;
    font-family: var(--sans);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: background 0.15s;
  }
  .review-btn-pdf:hover { background: var(--accent-dark); }


  /* ── Address autocomplete ── */
  .addr-wrap { position: relative; }
  .addr-dropdown {
    position: absolute;
    top: calc(100% + 4px);
    left: 0; right: 0;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 9px;
    overflow: hidden;
    z-index: 500;
    box-shadow: 0 4px 16px rgba(0,0,0,0.1);
    display: none;
  }
  .addr-item {
    padding: 9px 13px;
    font-size: 13px;
    font-family: var(--sans);
    color: var(--ink2);
    cursor: pointer;
    line-height: 1.4;
  }
  .addr-item:hover, .addr-item.active {
    background: var(--accent-light);
    color: var(--accent);
  }
  .addr-item-main { font-weight: 600; color: var(--ink); }
  .addr-item-sub { font-size: 11px; color: var(--ink3); }

  /* ── Room name modal ── */
  .modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.45);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 999;
  }
  .modal-box {
    background: #fff;
    border-radius: 14px;
    padding: 1.5rem;
    width: 340px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.18);
  }
  .modal-title {
    font-size: 15px;
    font-weight: 700;
    color: var(--ink);
    margin-bottom: 1rem;
    letter-spacing: -0.2px;
  }
  .modal-input-wrap { position: relative; }
  .modal-input {
    width: 100%;
    height: 42px;
    border: 1.5px solid var(--border);
    border-radius: 9px;
    padding: 0 12px;
    font-size: 15px;
    font-family: var(--sans);
    color: var(--ink);
    background: #fafafa;
    outline: none;
    transition: border-color 0.15s;
  }
  .modal-input:focus { border-color: var(--accent); background: #fff; }
  .modal-suggestions {
    position: absolute;
    top: calc(100% + 4px);
    left: 0; right: 0;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 9px;
    overflow: hidden;
    z-index: 10;
    box-shadow: 0 4px 16px rgba(0,0,0,0.1);
  }
  .modal-suggestion-item {
    padding: 9px 14px;
    font-size: 14px;
    font-family: var(--sans);
    color: var(--ink2);
    cursor: pointer;
    transition: background 0.1s;
  }
  .modal-suggestion-item:hover,
  .modal-suggestion-item.active { background: var(--accent-light); color: var(--accent); }
  .modal-actions {
    display: flex;
    gap: 8px;
    margin-top: 1rem;
  }
  .modal-btn-confirm {
    flex: 1;
    padding: 11px;
    background: var(--accent);
    color: #fff;
    border: none;
    border-radius: 9px;
    font-size: 14px;
    font-weight: 700;
    font-family: var(--sans);
    cursor: pointer;
    transition: background 0.15s;
  }
  .modal-btn-confirm:hover { background: var(--accent-dark); }
  .modal-btn-cancel {
    flex: 1;
    padding: 11px;
    background: transparent;
    color: #888;
    border: 1px solid #ddd;
    border-radius: 9px;
    font-size: 14px;
    font-weight: 500;
    font-family: var(--sans);
    cursor: pointer;
    transition: background 0.15s;
  }
  .modal-btn-cancel:hover { background: #f5f5f5; color: #444; }

  .success-banner {
    background: var(--success-bg);
    border: 1px solid #b2dfcc;
    border-radius: 10px;
    padding: 14px 18px;
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    font-weight: 600;
    color: var(--success);
    margin-top: 1rem;
  }

  /* ── Tablet ── */
  @media (max-width: 768px) {
    .grid-4 { grid-template-columns: 1fr 1fr; }

    .review-overlay { padding: 0; align-items: flex-end; }
    .review-box {
      border-radius: 16px 16px 0 0;
      max-height: 92vh;
      overflow-y: auto;
      padding: 1.25rem 1rem;
    }
  }

  @media (max-width: 768px) {
    #pdf-preview-frame { height: 55vh; }
  }

  /* ── Mobile ── */
  @media (max-width: 600px) {
    #pdf-preview-frame { height: 45vh; }
    .topbar { padding: 0 1rem; }
    .shell { padding: 0.75rem 0.75rem 5rem; }

    .card { padding: 1rem; }
    .room-body { padding: 1rem; }

    .grid-2, .grid-3 { grid-template-columns: 1fr; }
    .grid-4 { grid-template-columns: 1fr 1fr; }
    .psychro-grid { grid-template-columns: 48px 1fr 1fr 60px 76px; }

    /* Material rows — 2 row layout on mobile */
    .material-row-header { display: none; }
    .material-row {
      grid-template-columns: 1fr 1fr 44px 32px;
      row-gap: 6px;
    }
    /* Select spans first 3 cols, row 1 */
    .material-row > *:nth-child(1) { grid-column: 1 / 4; }
    /* Initial%, Final%, Demo — row 2, auto-placed */
    /* Delete button — row 1, last col */
    .material-row > *:nth-child(5) { grid-row: 1; grid-column: 4; }

    .equip-row { grid-template-columns: 1fr 60px 32px; }

    /* Room header wraps on small screens */
    .room-header { flex-wrap: wrap; gap: 6px; padding: 10px 1rem; }
    .room-header > div:last-child { gap: 6px; }
    .remove-btn { padding: 5px 8px; font-size: 11px; }

    /* Review modal — bottom sheet */
    .review-overlay { padding: 0; align-items: flex-end; }
    .review-box {
      border-radius: 16px 16px 0 0;
      max-height: 92vh;
      overflow-y: auto;
      padding: 1rem 0.75rem;
    }
    .review-room-block { overflow-x: auto; -webkit-overflow-scrolling: touch; }
    .review-cell-input { width: 44px; font-size: 11px; }
    .review-btn-row { position: sticky; bottom: 0; background: var(--bg); padding-top: 0.75rem; }

    /* Room name modal */
    .modal-box { width: calc(100% - 2rem); }

    /* JN search */
    .jn-search-row { flex-wrap: wrap; }
    .jn-btn { width: 100%; }

    /* Section head */
    .section-head { margin: 1.25rem 0 0.75rem; }

    /* Generate button */
    .btn-generate { font-size: 15px; padding: 14px; margin-top: 1rem; }
  }

  /* ── Small phones ── */
  @media (max-width: 380px) {
    .grid-4 { grid-template-columns: 1fr 1fr; }
    .psychro-grid { grid-template-columns: 48px 1fr 1fr 60px 76px; }
  }