@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@300;400;500;600&display=swap');

:root {
  --csa-font: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --csa-bg: #ffffff;
  --csa-bg2: #f7f7f5;
  --csa-bg3: #f0efed;
  --csa-text: #1a1a1a;
  --csa-text2: #5a5a5a;
  --csa-text3: #8a8a8a;
  --csa-border: #e2e0db;
  --csa-border2: #c8c5be;
  --csa-sel: #1a1a1a;
  --csa-green: #2c6e49;
  --csa-r: 6px;
  --csa-tr: 0.2s ease;
}

.csa-configurator * { box-sizing: border-box; margin: 0; padding: 0; }
.csa-configurator { max-width: 1200px; margin: 0 auto; font-family: var(--csa-font); color: var(--csa-text); line-height: 1.5; -webkit-font-smoothing: antialiased; }

/* LAYOUT */
.csa-layout { display: grid; grid-template-columns: 1fr 420px; border: 1px solid var(--csa-border); border-radius: 10px; overflow: hidden; background: var(--csa-bg); min-height: 600px; }
.csa-panel-steps { overflow-y: auto; max-height: 85vh; }
.csa-panel-preview { background: var(--csa-bg2); border-left: 1px solid var(--csa-border); display: flex; flex-direction: column; position: sticky; top: 0; height: 85vh; overflow: hidden; }

/* TABS */
.csa-tabs { display: flex; flex-wrap: wrap; border-bottom: 1px solid var(--csa-border); background: var(--csa-bg); position: sticky; top: 0; z-index: 10; }
.csa-tab { padding: 12px 16px; font-size: 11px; font-weight: 500; letter-spacing: 0.05em; text-transform: uppercase; color: var(--csa-text3); cursor: pointer; border-bottom: 2px solid transparent; transition: all var(--csa-tr); white-space: nowrap; user-select: none; display: flex; align-items: center; gap: 5px; }
.csa-tab:hover { color: var(--csa-text2); background: var(--csa-bg3); }
.csa-tab.active { color: var(--csa-text); border-bottom-color: var(--csa-sel); }
.csa-tab.done { color: var(--csa-green); }
.csa-tab.hidden-tab { display: none; }
.csa-tab-num { display: inline-flex; align-items: center; justify-content: center; width: 18px; height: 18px; border-radius: 50%; background: var(--csa-bg2); font-size: 10px; font-weight: 600; transition: all var(--csa-tr); }
.csa-tab.active .csa-tab-num { background: var(--csa-sel); color: #fff; }
.csa-tab.done .csa-tab-num { background: var(--csa-green); color: #fff; }

/* CONTENT */
.csa-content { padding: 28px; animation: csaFade 0.25s ease; }
@keyframes csaFade { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: translateY(0); } }
.csa-content-title { font-size: 20px; font-weight: 300; margin-bottom: 4px; }
.csa-content-sub { font-size: 13px; color: var(--csa-text3); margin-bottom: 22px; }

/* GRID */
.csa-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 10px; }
.csa-grid.wide { grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); }
.csa-grid.csa-grid-4col { grid-template-columns: repeat(4, 1fr); }

/* CARD */
.csa-card { position: relative; border: 1.5px solid var(--csa-border); border-radius: var(--csa-r); padding: 14px; cursor: pointer; transition: all var(--csa-tr); background: var(--csa-bg); text-align: center; }
.csa-card:hover { border-color: var(--csa-border2); box-shadow: 0 2px 8px rgba(0,0,0,0.05); transform: translateY(-1px); }
.csa-card.selected { border-color: var(--csa-sel); background: var(--csa-bg3); box-shadow: 0 0 0 1px var(--csa-sel); }
.csa-card-check { position: absolute; top: 7px; right: 7px; width: 18px; height: 18px; border-radius: 50%; border: 1.5px solid var(--csa-border); background: var(--csa-bg); transition: all var(--csa-tr); display: flex; align-items: center; justify-content: center; }
.csa-card.selected .csa-card-check { background: var(--csa-sel); border-color: var(--csa-sel); }
.csa-card.selected .csa-card-check::after { content: ''; width: 5px; height: 9px; border: 1.5px solid #fff; border-top: none; border-left: none; transform: rotate(45deg) translateY(-1px); }
.csa-card-img { width: 100%; max-width: 110px; height: 80px; object-fit: contain; margin: 0 auto 10px; display: block; }
.csa-card-ph { width: 100%; max-width: 110px; height: 80px; margin: 0 auto 10px; background: var(--csa-bg2); border-radius: 4px; }
.csa-grid-large { grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 14px; }
.csa-grid-large .csa-card { padding: 0; overflow: hidden; }
.csa-grid-large .csa-card-img { width: 100%; max-width: 100%; height: 300px; object-fit: cover; border-radius: 0; margin: 0 0 12px 0; }
.csa-grid-large .csa-card-ph { width: 100%; max-width: 100%; height: 300px; margin: 0 0 12px 0; }
.csa-grid-large .csa-card-name { padding: 0 14px 12px; }
.csa-grid-large .csa-card-desc { padding: 0 14px 12px; }
.csa-grid-large .csa-card-check { top: 10px; right: 10px; }
.csa-card-name { font-size: 13px; font-weight: 500; }
.csa-card-desc { font-size: 11px; color: var(--csa-text3); margin-top: 3px; }
.csa-card-price { font-size: 12px; color: var(--csa-green); font-weight: 600; margin-top: 5px; }
.csa-card-nosurcharge { font-size: 11px; color: var(--csa-text3); margin-top: 5px; font-style: italic; }

/* LIST */
.csa-list { display: flex; flex-direction: column; gap: 6px; }
.csa-row { display: flex; align-items: center; justify-content: space-between; padding: 12px 16px; border: 1.5px solid var(--csa-border); border-radius: var(--csa-r); cursor: pointer; transition: all var(--csa-tr); background: var(--csa-bg); }
.csa-row:hover { border-color: var(--csa-border2); background: var(--csa-bg3); }
.csa-row.selected { border-color: var(--csa-sel); background: var(--csa-bg3); box-shadow: 0 0 0 1px var(--csa-sel); }
.csa-row-left { display: flex; align-items: center; gap: 10px; font-size: 14px; }
.csa-row-check { width: 16px; height: 16px; border-radius: 50%; border: 1.5px solid var(--csa-border); flex-shrink: 0; display: flex; align-items: center; justify-content: center; transition: all var(--csa-tr); }
.csa-row.selected .csa-row-check { background: var(--csa-sel); border-color: var(--csa-sel); }
.csa-row.selected .csa-row-check::after { content: ''; width: 4px; height: 7px; border: 1.5px solid #fff; border-top: none; border-left: none; transform: rotate(45deg) translateY(-1px); }

/* PREVIEW */
.csa-preview { width: 100%; flex-shrink: 0; background: #f2f1ef; display: flex; align-items: center; justify-content: center; border-bottom: 1px solid var(--csa-border); overflow: hidden; padding: 0; }
.csa-preview img { width: 100%; height: auto; display: block; }
.csa-preview-ph { text-align: center; color: var(--csa-text3); font-size: 13px; padding: 60px 20px; }
.csa-preview-ph p { margin-top: 10px; }

/* SUMMARY */
.csa-summary { padding: 20px; flex: 1; overflow-y: auto; }
.csa-summary-head { font-size: 12px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.06em; color: var(--csa-text3); margin-bottom: 14px; }
.csa-summary-list { list-style: none; }
.csa-summary-li { display: flex; justify-content: space-between; padding: 8px 0; border-bottom: 1px solid var(--csa-border); font-size: 12px; }
.csa-summary-li:last-child { border-bottom: none; }
.csa-summary-k { color: var(--csa-text3); }
.csa-summary-v { text-align: right; font-weight: 500; max-width: 55%; }

/* TOTALS */
.csa-totals { margin-top: 14px; padding-top: 14px; border-top: 1px solid var(--csa-border); }
.csa-total-row { display: flex; justify-content: space-between; padding: 4px 0; font-size: 13px; color: var(--csa-text2); }
.csa-total-iva { font-size: 12px; color: var(--csa-text3); }
.csa-total-final { padding-top: 10px; margin-top: 6px; border-top: 2px solid var(--csa-text); font-size: 20px; font-weight: 600; color: var(--csa-text); letter-spacing: -0.02em; }

/* ACTIONS */
.csa-actions { padding: 16px 20px; border-top: 1px solid var(--csa-border); background: var(--csa-bg); flex-shrink: 0; }
.csa-btn { width: 100%; padding: 13px 20px; background: var(--csa-sel); color: #fff; border: none; border-radius: var(--csa-r); font-family: var(--csa-font); font-size: 14px; font-weight: 500; cursor: pointer; transition: all var(--csa-tr); text-decoration: none; display: inline-block; text-align: center; }
.csa-btn:hover { opacity: 0.85; transform: translateY(-1px); }
.csa-btn:disabled { opacity: 0.35; cursor: not-allowed; transform: none; }
.csa-btn.sec { background: transparent; color: var(--csa-text); border: 1.5px solid var(--csa-border); margin-top: 8px; }
.csa-btn.sec:hover { background: var(--csa-bg3); border-color: var(--csa-border2); }
.csa-btn.inline { width: auto; display: inline-block; margin: 6px 4px; }

/* CONTACT FORM */
.csa-contact { max-width: 480px; }
.csa-field { margin-bottom: 12px; }
.csa-field label { display: block; font-size: 11px; font-weight: 500; color: var(--csa-text3); text-transform: uppercase; letter-spacing: 0.04em; margin-bottom: 4px; }
.csa-field input, .csa-field textarea { width: 100%; padding: 10px 12px; border: 1.5px solid var(--csa-border); border-radius: var(--csa-r); font-family: var(--csa-font); font-size: 14px; color: var(--csa-text); outline: none; transition: border-color var(--csa-tr); }
.csa-field input:focus, .csa-field textarea:focus { border-color: var(--csa-sel); }
.csa-field textarea { resize: vertical; min-height: 70px; }

/* RESULT */
.csa-result { text-align: center; padding: 40px 28px; }
.csa-result-ico { width: 56px; height: 56px; border-radius: 50%; background: var(--csa-green); color: #fff; display: flex; align-items: center; justify-content: center; margin: 0 auto 18px; font-size: 26px; }
.csa-result h2 { font-size: 18px; font-weight: 400; margin-bottom: 8px; }
.csa-result p { font-size: 14px; color: var(--csa-text2); margin-bottom: 18px; }

/* EMPTY */
.csa-empty { text-align: center; padding: 36px 18px; color: var(--csa-text3); font-size: 14px; }

/* LOADING */
.csa-loading { display: flex; flex-direction: column; align-items: center; justify-content: center; min-height: 400px; color: var(--csa-text3); font-size: 13px; }
.csa-spinner { width: 28px; height: 28px; border: 2px solid var(--csa-border); border-top-color: var(--csa-text); border-radius: 50%; animation: csaSpin 0.7s linear infinite; margin-bottom: 12px; }
@keyframes csaSpin { to { transform: rotate(360deg); } }

/* SCROLLBAR */
.csa-panel-steps::-webkit-scrollbar, .csa-panel-preview::-webkit-scrollbar { width: 3px; }
.csa-panel-steps::-webkit-scrollbar-thumb, .csa-panel-preview::-webkit-scrollbar-thumb { background: var(--csa-border); border-radius: 2px; }

/* RESPONSIVE TABLET */
@media (max-width: 900px) {
  .csa-layout { grid-template-columns: 1fr; }
  .csa-panel-steps { max-height: none; order: 1; }
  .csa-panel-preview { border-left: none; border-top: 1px solid var(--csa-border); position: relative; max-height: none; order: 2; }
  .csa-preview { height: auto; min-height: 0; max-height: none; }
  .csa-preview img { width: 100%; height: auto; object-fit: cover; }
}

/* RESPONSIVE MOBILE */
@media (max-width: 600px) {
  .csa-configurator { margin: 0 -12px; }
  .csa-layout { border-radius: 0; border-left: none; border-right: none; }
  .csa-tab { padding: 10px 12px; font-size: 10px; }
  .csa-content { padding: 18px 14px; }
  .csa-grid { grid-template-columns: repeat(2, 1fr); gap: 8px; }
  .csa-card { padding: 10px; }
  .csa-card-img { height: 55px; margin-bottom: 7px; }
  .csa-card-name { font-size: 12px; }
  .csa-preview { height: auto; min-height: 0; max-height: none; padding: 0; margin: 0; border-bottom: none; }
  .csa-preview img { width: 100%; height: auto; object-fit: cover; display: block; }
  .csa-total-final { font-size: 18px; }
  .csa-content-title { font-size: 17px; }
  .csa-actions { position: sticky; bottom: 0; z-index: 10; box-shadow: 0 -4px 10px rgba(0,0,0,0.05); }
  .csa-summary { padding: 16px; }
}