/* TCL中央空调报价系统 - 样式表 */

:root {
  --primary: #E60012;
  --primary-dark: #B8000F;
  --bg: #F5F5F5;
  --card: #FFFFFF;
  --text: #1A1A1A;
  --text2: #666666;
  --text3: #999999;
  --border: #E8E8E8;
  --tag-bg: #FFF0F1;
  --tag-text: #E60012;
  --success: #00B578;
  --shadow: 0 2px 12px rgba(0,0,0,0.06);
  --radius: 12px;
  --radius-sm: 8px;
  --nav-h: 56px;
  --tab-h: 64px;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC", "Helvetica Neue", sans-serif;
  background: var(--bg); color: var(--text);
  -webkit-font-smoothing: antialiased;
  overscroll-behavior: none;
  padding-bottom: calc(var(--tab-h) + env(safe-area-inset-bottom, 0px));
}

/* ─── Top Nav ─── */
.nav {
  position: sticky; top:0; z-index:100;
  background: var(--card); border-bottom:1px solid var(--border);
  padding: 0 16px; height: var(--nav-h);
  display:flex; align-items:center; justify-content:space-between;
}
.nav-title { font-size:18px; font-weight:700; }
.nav-title span { color: var(--primary); }
.nav-badge {
  background: var(--primary); color: #fff; font-size:12px; font-weight:600;
  padding: 2px 8px; border-radius:10px; min-width:20px; text-align:center;
}

/* ─── Nav Actions ─── */
.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav-btn {
  padding: 6px 16px;
  border: 1.5px solid var(--primary);
  background: transparent;
  color: var(--primary);
  border-radius: 6px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
}

.nav-btn:hover {
  background: var(--primary);
  color: white;
}

.nav-btn:last-child {
  background: var(--primary);
  color: white;
}

.nav-btn:last-child:hover {
  background: var(--primary-dark);
}

/* ─── User Menu ─── */
.user-menu {
  position: relative;
  display: flex;
  align-items: center;
  cursor: pointer;
}

.user-menu .username {
  font-size: 14px;
  font-weight: 500;
  color: var(--text);
  padding: 6px 12px;
  border-radius: 6px;
  transition: background 0.2s;
}

.user-menu:hover .username {
  background: var(--bg);
}

.user-dropdown {
  position: absolute;
  top: 100%;
  right: 0;
  background: white;
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  padding: 8px 0;
  min-width: 150px;
  display: none;
  z-index: 1000;
}

.user-menu:hover .user-dropdown {
  display: block;
}

.user-dropdown a {
  display: block;
  padding: 10px 16px;
  color: var(--text);
  text-decoration: none;
  font-size: 14px;
  transition: background 0.2s;
}

.user-dropdown a:hover {
  background: var(--bg);
}

/* ─── Search ─── */
.search-wrap {
  position:sticky; top:var(--nav-h); z-index:99;
  padding: 12px 16px; background: var(--bg);
}
.search-box {
  display:flex; align-items:center; background: var(--card);
  border-radius: var(--radius-sm); border: 1.5px solid var(--border);
  padding: 0 12px; gap:8px; transition: border .2s;
}
.search-box:focus-within { border-color: var(--primary); }
.search-box svg { flex-shrink:0; width:18px; height:18px; color: var(--text3); }
.search-box input {
  flex:1; border:none; outline:none; font-size:15px; padding: 10px 0;
  background: transparent; color: var(--text);
}
.search-box input::placeholder { color: var(--text3); }
.search-clear {
  border:none; background:none; color:var(--text3); font-size:18px;
  cursor:pointer; padding:0 4px; display:none;
}

/* ─── Category Pills ─── */
.cat-scroll {
  display:flex; gap:8px; padding:0 16px 12px; overflow-x:auto;
  scrollbar-width:none; -ms-overflow-style:none;
}
.cat-scroll::-webkit-scrollbar { display:none; }
.cat-pill {
  flex-shrink:0; padding: 6px 14px; border-radius:20px; font-size:13px;
  font-weight:500; white-space:nowrap; cursor:pointer;
  background: var(--card); border: 1px solid var(--border); color: var(--text2);
  transition: all .2s;
}
.cat-pill.active { background: var(--primary); color:#fff; border-color:var(--primary); }

/* ─── Product List ─── */
.product-list { padding: 0 16px 16px; }
.section-title {
  font-size: 13px; font-weight:600; color: var(--text3);
  text-transform: uppercase; letter-spacing: 0.5px;
  padding: 16px 0 8px;
}
.product-card {
  background: var(--card); border-radius: var(--radius);
  padding: 14px 16px; margin-bottom: 10px;
  box-shadow: var(--shadow); cursor: pointer; transition: all .15s;
  display:flex; align-items:center; gap:12px;
  border: 1.5px solid transparent;
  position: relative;
}
.product-card:active { transform: scale(0.985); }
.product-card.in-cart { border-color: var(--primary); background: #FFFBFB; }
.product-card .p-icon {
  width: 42px; height: 42px; border-radius: 10px;
  display:flex; align-items:center; justify-content:center;
  font-size:20px; flex-shrink:0;
}
.p-icon.outer { background: #E8F4FD; }
.p-icon.inner { background: #FFF0E6; }
.p-icon.package { background: #E8F8E8; }
.p-info { flex:1; min-width:0; }
.p-model {
  font-size:14px; font-weight:600; color: var(--text);
  white-space:nowrap; overflow:hidden; text-overflow:ellipsis;
}
.p-meta { font-size:12px; color: var(--text2); margin-top:2px; }
.p-price { text-align:right; flex-shrink:0; }
.p-price .standard { font-size:12px; color: var(--text3); text-decoration:line-through; }
.p-price .discounted { font-size:17px; font-weight:700; color: var(--primary); }
.p-price .unit { font-size:11px; color: var(--text3); }
.p-tag {
  display:inline-block; font-size:10px; padding:1px 6px; border-radius:4px;
  font-weight:500; margin-left:4px;
}
.p-tag.outer-tag { background: #E8F4FD; color: #1890FF; }
.p-tag.inner-tag { background: #FFF0E6; color: #FA8C16; }

/* ─── Empty State ─── */
.empty { text-align:center; padding: 40px 20px; }
.empty svg { width:64px; height:64px; color: #DDD; margin-bottom:12px; }
.empty .msg { font-size:14px; color: var(--text3); }

/* ─── Quote Cart Panel (Floating) ─── */
.cart-fab {
  position:fixed; bottom:calc(var(--tab-h) + 20px + env(safe-area-inset-bottom, 0px));
  right:16px; z-index:50;
  width:52px; height:52px; border-radius:26px;
  background: var(--primary); color:#fff; border:none;
  box-shadow: 0 4px 20px rgba(230,0,18,0.4);
  display:flex; align-items:center; justify-content:center;
  cursor:pointer; transition: transform .2s;
}
.cart-fab:active { transform: scale(0.9); }
.cart-fab .count {
  position:absolute; top:-4px; right:-4px;
  background: #FF4D4F; color:#fff; font-size:11px; font-weight:700;
  width:20px; height:20px; border-radius:10px;
  display:flex; align-items:center; justify-content:center;
}
.cart-fab.shrink { opacity:0; pointer-events:none; transform:scale(0.5); }

/* ─── Quote Panel ─── */
.quote-overlay {
  position:fixed; inset:0; z-index:200;
  background: rgba(0,0,0,0.4); display:flex; flex-direction:column;
  justify-content:flex-end; opacity:0; pointer-events:none; transition:opacity .25s;
}
.quote-overlay.show { opacity:1; pointer-events:auto; }
.quote-panel {
  background: #fff; border-radius: 20px 20px 0 0;
  max-height: 85vh; display:flex; flex-direction:column;
  transform: translateY(100%); transition: transform .3s cubic-bezier(0.4, 0, 0.2, 1);
}
.quote-overlay.show .quote-panel { transform:translateY(0); }
.quote-header {
  padding: 16px 20px; border-bottom: 1px solid var(--border);
  display:flex; align-items:center; justify-content:space-between;
}
.quote-header h2 { font-size:18px; font-weight:700; }
.quote-close { width:32px; height:32px; border-radius:16px; border:none; background: var(--bg); cursor:pointer; font-size:18px; color:var(--text2); }
.quote-body { flex:1; overflow-y:auto; padding: 12px 20px; }
.quote-item {
  display:flex; align-items:center; gap:10px;
  padding: 12px 0; border-bottom: 1px solid #F5F5F5;
}
.quote-item .qi-info { flex:1; min-width:0; }
.quote-item .qi-model { font-size:13px; font-weight:600; }
.quote-item .qi-name { font-size:11px; color: var(--text3); }
.quote-item .qi-qty {
  display:flex; align-items:center; gap:6px;
}
.qi-qty button {
  width:28px; height:28px; border-radius:14px; border: 1px solid var(--border);
  background: var(--card); font-size:16px; cursor:pointer; color: var(--text);
  display:flex; align-items:center; justify-content:center;
}
.qi-qty button:active { background: #f0f0f0; }
.qi-qty span { font-size:14px; font-weight:600; width:20px; text-align:center; }
.qi-price { text-align:right; min-width:70px; }
.qi-price .qi-unit { font-size:13px; font-weight:700; color: var(--text); }
.qi-price .qi-sub { font-size:11px; color: var(--text3); }
.qi-remove {
  border:none; background:none; color: #CCC; font-size:18px;
  cursor:pointer; padding: 4px;
}
.quote-footer {
  padding: 16px 20px; border-top:1px solid var(--border);
  background: #FAFAFA;
}
.quote-total {
  display:flex; justify-content:space-between; align-items:center;
  margin-bottom: 12px;
}
.quote-total span { font-size:14px; font-weight:500; }
.quote-total strong { font-size:22px; color: var(--primary); }
.quote-actions { display:flex; gap:10px; }
.btn {
  flex:1; padding:12px; border-radius:10px; border:none;
  font-size:15px; font-weight:600; cursor:pointer; transition: all .15s;
}
.btn:active { transform: scale(0.97); }
.btn-preview { background: #F5F5F5; color: var(--text); }
.btn-confirm { background: var(--primary); color: #fff; }

/* ─── Quote Summary (Preview) ─── */
.summary-page { padding: 16px; }
.summary-card {
  background: var(--card); border-radius: var(--radius);
  box-shadow: var(--shadow); overflow:hidden;
  margin-bottom: 12px;
}
.sc-header {
  background: linear-gradient(135deg, var(--primary), #B8000F);
  color:#fff; padding:20px;
}
.sc-header .sc-code { font-size:11px; opacity:0.8; }
.sc-header .sc-title { font-size:20px; font-weight:700; margin-top:4px; }
.sc-table {
  width:100%; border-collapse:collapse; font-size:13px;
}
.sc-table th {
  text-align:left; padding: 10px 16px; font-size:11px; font-weight:600;
  color: var(--text3); background:#FAFAFA; border-bottom:1px solid var(--border);
}
.sc-table td { padding: 10px 16px; border-bottom:1px solid #F5F5F5; }
.sc-table td:last-child, .sc-table th:last-child { text-align:right; }
.sc-table .td-price { font-weight:600; }
.sc-total {
  display:flex; justify-content:space-between; align-items:center;
  padding: 16px; font-size:18px; font-weight:700;
}
.sc-total strong { color: var(--primary); font-size:24px; }

/* ─── Tab Bar ─── */
.tab-bar {
  position:fixed; bottom:0; left:0; right:0; z-index:90;
  background: var(--card); border-top:1px solid var(--border);
  padding: 8px 0 calc(8px + env(safe-area-inset-bottom, 0px));
  display:flex;
}
.tab-item {
  flex:1; display:flex; flex-direction:column; align-items:center;
  gap:4px; cursor:pointer; padding:4px 0;
  border:none; background:none; color: var(--text3);
  font-size:10px; font-weight:500; transition: color .2s;
}
.tab-item.active { color: var(--primary); }
.tab-item svg { width:22px; height:22px; }

/* ─── Quantity Modal ─── */
.qty-modal-overlay {
  position:fixed; inset:0; z-index:300;
  background: rgba(0,0,0,0.5); display:flex;
  align-items:center; justify-content:center;
  opacity:0; pointer-events:none; transition: opacity .2s;
}
.qty-modal-overlay.show { opacity:1; pointer-events:auto; }
.qty-modal {
  background:#fff; border-radius:16px; padding:24px; width:280px;
  text-align:center;
}
.qty-modal h3 { font-size:16px; margin-bottom:16px; }
.qty-input-group { display:flex; align-items:center; justify-content:center; gap:16px; margin-bottom:20px; }
.qty-input-group button {
  width:40px; height:40px; border-radius:20px; border:1.5px solid var(--border);
  background: var(--card); font-size:20px; cursor:pointer;
}
.qty-input-group span { font-size:24px; font-weight:700; min-width:40px; }
.qty-modal .btn { padding:10px; }

/* ─── Toast ─── */
.toast {
  position:fixed; top:20px; left:50%; transform:translateX(-50%); z-index:999;
  background: #333; color:#fff; padding:10px 20px; border-radius:20px;
  font-size:14px; font-weight:500; opacity:0; transition: opacity .3s;
  pointer-events:none;
}
.toast.show { opacity:1; }

/* ─── Page Switching ─── */
.page { display:none; }
.page.active { display:block; }

/* ─── Print Styles ─── */
@media print {
  /* 隐藏不需要打印的元素 */
  .nav, .tab-bar, .cart-fab, .quote-overlay, .qty-modal-overlay,
  .toast, .search-wrap, .cat-scroll, .product-list, .empty,
  .quote-actions, .btn, .qi-remove, .qi-qty button {
    display: none !important;
  }

  /* 显示报价单页面 */
  .page.active { display: block !important; }
  #page-summary { display: block !important; }

  /* 调整页面边距 */
  body {
    padding: 0;
    background: #fff;
  }

  .summary-page { padding: 20px; }

  /* 优化报价单卡片样式 */
  .summary-card {
    box-shadow: none;
    border: 1px solid #ddd;
  }

  .sc-header {
    background: var(--primary) !important;
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }

  /* 表格样式优化 */
  .sc-table {
    width: 100%;
    border-collapse: collapse;
  }

  .sc-table th {
    background: #f5f5f5 !important;
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }

  .sc-table td, .sc-table th {
    border: 1px solid #ddd;
  }

  /* 总价样式 */
  .sc-total {
    border-top: 2px solid var(--primary);
    margin-top: 20px;
    padding-top: 20px;
  }

  /* 强制分页控制 */
  .summary-card {
    page-break-inside: avoid;
  }

  /* 页眉页脚 */
  @page {
    margin: 20mm;
    size: A4;
  }
}

/* ─── Project Info Form ─── */
.project-form {
  background: var(--card); border-radius: var(--radius);
  padding: 16px; margin-bottom: 12px;
  box-shadow: var(--shadow);
}
.form-group { margin-bottom: 12px; }
.form-group:last-child { margin-bottom: 0; }
.form-group label {
  display:block; font-size:13px; font-weight:600; color: var(--text2);
  margin-bottom: 6px;
}
.form-group input {
  width:100%; padding: 10px 12px; border:1.5px solid var(--border);
  border-radius: var(--radius-sm); font-size:15px; color: var(--text);
  outline:none; transition: border .2s;
}
.form-group input:focus { border-color: var(--primary); }

/* ─── Hero Section ─── */
.hero-section {
  background: linear-gradient(135deg, #E60012 0%, #B8000F 100%);
  color: white;
  padding: 30px 20px 20px;
  text-align: center;
}

.hero-content {
  max-width: 600px;
  margin: 0 auto;
}

.hero-title {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 6px;
  letter-spacing: -0.5px;
}

.hero-subtitle {
  font-size: 13px;
  opacity: 0.9;
  margin-bottom: 16px;
  font-weight: 400;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin-top: 16px;
}

.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.stat-number {
  font-size: 22px;
  font-weight: 700;
  line-height: 1;
}

.stat-label {
  font-size: 11px;
  opacity: 0.8;
  margin-top: 2px;
}

/* ─── Methods Section ─── */
.methods-section {
  padding: 24px 16px;
  background: var(--bg);
}

.methods-title {
  font-size: 18px;
  font-weight: 700;
  text-align: center;
  color: var(--text);
  margin-bottom: 4px;
}

.methods-subtitle {
  font-size: 12px;
  color: var(--text3);
  text-align: center;
  margin-bottom: 16px;
}

.methods-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  max-width: 600px;
  margin: 0 auto;
}

@media (min-width: 640px) {
  .methods-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.method-card {
  background: var(--card);
  border-radius: var(--radius-sm);
  padding: 12px 10px;
  box-shadow: var(--shadow);
  cursor: pointer;
  transition: all 0.3s;
  border: 2px solid transparent;
  display: flex;
  flex-direction: column;
}

.method-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  border-color: var(--primary);
}

.method-card:active {
  transform: translateY(0);
}

.method-icon {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: #FFF0F1;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 8px;
  color: var(--primary);
}

.method-icon svg {
  width: 18px;
  height: 18px;
}

.method-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 4px;
}

.method-desc {
  font-size: 11px;
  color: var(--text2);
  line-height: 1.3;
  margin-bottom: 6px;
  flex: 1;
}

.method-features {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-bottom: 8px;
}

.method-features span {
  font-size: 9px;
  color: var(--success);
  background: #E8F8E8;
  padding: 1px 6px;
  border-radius: 3px;
  font-weight: 500;
}

.method-btn {
  width: 100%;
  padding: 6px;
  border: 1.5px solid var(--primary);
  background: transparent;
  color: var(--primary);
  border-radius: 6px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  margin-top: auto;
}

.method-btn:hover {
  background: var(--primary);
  color: white;
}

/* ─── Quick Section ─── */
.quick-section {
  padding: 32px 20px;
  background: var(--card);
  border-top: 1px solid var(--border);
}

.quick-section .container {
  max-width: 600px;
  margin: 0 auto;
}

.quick-section h2 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--text);
}

.quick-actions {
  display: flex;
  gap: 12px;
}

.quick-btn {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px;
  border: 1.5px solid var(--border);
  background: var(--bg);
  border-radius: 10px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text);
  cursor: pointer;
  transition: all 0.2s;
}

.quick-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: #FFF0F1;
}

.quick-btn svg {
  width: 20px;
  height: 20px;
}

/* ─── Modal Overlay ─── */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 300;
  background: rgba(0,0,0,0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
}

.modal-overlay.show {
  opacity: 1;
  pointer-events: auto;
}

.modal-content {
  background: #fff;
  border-radius: 16px;
  width: 90%;
  max-width: 500px;
  max-height: 85vh;
  overflow-y: auto;
  transform: scale(0.9);
  transition: transform 0.3s;
}

.modal-overlay.show .modal-content {
  transform: scale(1);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px;
  border-bottom: 1px solid var(--border);
}

.modal-header h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
}

.modal-close {
  width: 32px;
  height: 32px;
  border-radius: 16px;
  border: none;
  background: var(--bg);
  cursor: pointer;
  font-size: 18px;
  color: var(--text2);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s;
}

.modal-close:hover {
  background: #e5e7eb;
}

.modal-body {
  padding: 20px;
}

/* ─── Room Form ─── */
.room-form .form-group {
  margin-bottom: 16px;
}

.room-form label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text2);
  margin-bottom: 6px;
}

.room-form input {
  width: 100%;
  padding: 10px 12px;
  border: 1.5px solid var(--border);
  border-radius: 8px;
  font-size: 15px;
  outline: none;
  transition: border 0.2s;
}

.room-form input:focus {
  border-color: var(--primary);
}

.room-form small {
  display: block;
  margin-top: 4px;
}

.result-box {
  background: #f0fdf4;
  border: 1px solid #86efac;
  border-radius: 8px;
  padding: 16px;
  margin-top: 16px;
}

.result-box h4 {
  font-size: 14px;
  font-weight: 600;
  color: #166534;
  margin-bottom: 8px;
}

.result-box p {
  font-size: 14px;
  color: #374151;
  margin: 4px 0;
}

.device-list {
  margin-top: 16px;
}

.device-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.device-item .device-info {
  flex: 1;
}

.device-item .device-model {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
}

.device-item .device-spec {
  font-size: 12px;
  color: var(--text2);
  margin-top: 2px;
}

/* ─── Upload Area ─── */
.upload-area {
  border: 2px dashed var(--border);
  border-radius: 12px;
  padding: 40px 20px;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s;
}

.upload-area:hover {
  border-color: var(--primary);
  background: #FFF0F1;
}

.upload-icon {
  color: var(--primary);
  margin-bottom: 12px;
}

.upload-area p {
  font-size: 14px;
  color: var(--text);
  margin: 4px 0;
}

.upload-hint {
  font-size: 12px;
  color: var(--text3);
}

.upload-actions {
  margin-top: 16px;
}

.status-box {
  background: #f0f9ff;
  border: 1px solid #bae6fd;
  border-radius: 8px;
  padding: 16px;
}

.status-box p {
  font-size: 14px;
  color: #0c4a6e;
  margin: 0;
}

.progress-bar {
  margin-top: 8px;
}

.progress-fill {
  transition: width 0.3s;
}

/* ─── Responsive Adjustments ─── */
@media (max-width: 639px) {
  .hero-section {
    padding: 20px 16px 16px;
  }
  
  .hero-title {
    font-size: 20px;
    margin-bottom: 4px;
  }
  
  .hero-subtitle {
    font-size: 12px;
    margin-bottom: 12px;
  }
  
  .hero-stats {
    gap: 16px;
    margin-top: 12px;
  }
  
  .stat-number {
    font-size: 18px;
  }
  
  .stat-label {
    font-size: 10px;
  }
  
  .methods-section {
    padding: 16px 12px;
  }
  
  .methods-title {
    font-size: 16px;
    margin-bottom: 2px;
  }
  
  .methods-subtitle {
    font-size: 11px;
    margin-bottom: 12px;
  }
  
  .methods-grid {
    gap: 8px;
  }
  
  .method-card {
    padding: 10px 8px;
  }
  
  .method-icon {
    width: 28px;
    height: 28px;
    margin-bottom: 6px;
  }
  
  .method-icon svg {
    width: 16px;
    height: 16px;
  }
  
  .method-name {
    font-size: 12px;
    margin-bottom: 3px;
  }
  
  .method-desc {
    font-size: 10px;
    margin-bottom: 4px;
    line-height: 1.2;
  }
  
  .method-features {
    gap: 3px;
    margin-bottom: 6px;
  }
  
  .method-features span {
    font-size: 8px;
    padding: 1px 4px;
  }
  
  .method-btn {
    padding: 5px;
    font-size: 11px;
  }
}

/* ─── Tab Bar Update ─── */
.tab-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  cursor: pointer;
  padding: 4px 0;
  border: none;
  background: none;
  color: var(--text3);
  font-size: 10px;
  font-weight: 500;
  transition: color 0.2s;
}

.tab-item.active {
  color: var(--primary);
}

.tab-item svg {
  width: 22px;
  height: 22px;
}

/* ─── Room Table Styles ─── */
#roomTableBody tr:hover {
  background: #f9fafb;
}

#roomTableBody td {
  padding: 8px 12px;
  border-bottom: 1px solid #e5e7eb;
  vertical-align: middle;
}

#roomTableBody input {
  width: 100%;
  padding: 8px 10px;
  border: 1.5px solid #d1d5db;
  border-radius: 6px;
  font-size: 14px;
  outline: none;
  transition: border-color 0.2s;
}

#roomTableBody input:focus {
  border-color: var(--primary);
}

#roomTableBody .room-cooling {
  font-weight: 600;
  color: var(--primary);
  font-size: 14px;
}

.btn-remove-room {
  padding: 6px 12px;
  background: #fee2e2;
  color: #dc2626;
  border: none;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-remove-room:hover {
  background: #fecaca;
}

/* Room result table */
.room-summary-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 12px;
  font-size: 13px;
}

.room-summary-table th {
  padding: 10px;
  text-align: left;
  font-weight: 600;
  color: #374151;
  border-bottom: 2px solid #e5e7eb;
  background: #f9fafb;
}

.room-summary-table td {
  padding: 10px;
  border-bottom: 1px solid #f3f4f6;
}

.room-summary-table tr:hover {
  background: #f9fafb;
}