:root {
  --header-height: 110px;
  --bg: #ffffff;
  --bg-subtle: #f8fafc;
  --text: #0f172a;
  --text-muted: #64748b;
  --border: rgba(226, 232, 240, 0.8);
  --accent: #059669; /* Esmeralda más elegante */
  --radius: 20px;
  --font-inter: 'Inter', sans-serif;
}

body.dark-mode {
  --bg: #030712;
  --bg-subtle: #0f172a;
  --text: #f1f5f9;
  --text-muted: #94a3b8;
  --border: rgba(255, 255, 255, 0.08);
  --accent: #10b981; /* Más vibrante en oscuro */
}

.no-transitions * { transition: none !important; }
* { box-sizing: border-box; margin: 0; padding: 0; }

html, body { overflow-x: hidden; overflow-y: auto; background-color: var(--bg); color: var(--text); }
body { font-family: var(--font-inter); padding-top: var(--header-height) !important; background: radial-gradient(circle at 0% 0%, rgba(16, 185, 129, 0.05) 0%, transparent 50%) var(--bg); }

header {
  position: fixed !important; top: 0; left: 0; right: 0;
  min-height: var(--header-height); background: var(--bg);
  border-bottom: 1px solid var(--border); z-index: 99999;
  padding: 0.5rem 1.5rem; display: flex; flex-direction: column; justify-content: center;
}

/* --- LOGO FIX --- */
.logo img { height: 28px; transition: filter 0.3s; }
body.dark-mode .logo img { filter: invert(1) brightness(2); }

/* --- HEADER ELEMENTS --- */
.nav-container { width: 100%; max-width: 1200px; margin: 0 auto; display: flex; flex-direction: column; gap: 0.8rem; }
.header-top { display: flex; align-items: center; justify-content: center; gap: 1.5rem; width: 100%; flex-wrap: wrap; }
.logo { display: flex; align-items: center; gap: 0.5rem; font-weight: 800; font-size: 1.2rem; color: var(--text); text-decoration: none; margin-right: auto; }
.controls { display: flex; align-items: center; gap: 0.75rem; margin-left: auto; }
/* Si dollarInfo se oculta (API caida), los controles siguen agrupados a la derecha. */
.controls > *[hidden] { display: none !important; }

.dollar-tag { display: flex; flex-direction: column; line-height: 1.2; text-align: center; align-items: center; }
.dollar-label { font-size: 0.65rem; font-weight: 700; color: var(--text-muted); text-transform: uppercase; }
#dollarPrice { font-size: 1.1rem; font-weight: 800; color: var(--text); }
.dollar-date { font-size: 0.65rem; font-weight: 500; color: var(--text-muted); }

.btn-icon { 
  background: var(--bg-subtle); border: 1px solid var(--border); border-radius: 12px; 
  cursor: pointer; display: flex; align-items: center; gap: 0.4rem; padding: 0.5rem 0.8rem; 
  font-weight: 700; font-size: 0.8rem; color: var(--text); 
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1); 
}
.btn-icon:hover { border-color: var(--accent); transform: translateY(-1px); box-shadow: 0 4px 6px -1px rgba(0,0,0,0.05); }
.btn-icon.active { background: rgba(5, 150, 105, 0.1); border-color: var(--accent); color: var(--accent); }

#themeToggle { min-width: 44px; height: 44px; justify-content: center; border-radius: 50%; }
body.dark-mode #themeToggle { color: #fbbf24; border-color: rgba(251, 191, 36, 0.3); }

.search-wrapper { position: relative; width: 100%; }
#searchInput { 
  width: 100%; padding: 0.75rem 1rem 0.75rem 2.8rem; background: var(--bg-subtle); 
  border: 1px solid var(--border); border-radius: 14px; color: var(--text); font-size: 1rem; 
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1); 
}
#searchInput:focus { outline: none; border-color: var(--accent); background: var(--bg); box-shadow: 0 0 0 4px rgba(5, 150, 105, 0.15); }
.search-icon { position: absolute; left: 1.1rem; top: 50%; transform: translateY(-50%); color: var(--text-muted); width: 18px; }

@media (max-width: 849px) {
  :root { --header-height: 160px; }
  .header-top { flex-direction: column; gap: 0.75rem; }
  .logo { width: 100%; justify-content: center; padding-bottom: 0.5rem; border-bottom: 1px solid var(--border); }
  .controls { width: 100%; justify-content: space-between; }
  .btn-icon { white-space: nowrap; }
}

/* --- LIST RENDER --- */
main { width: 100%; max-width: 1200px; margin: 0 auto; padding: 1.5rem 1rem; }
#productTable { width: 100%; display: flex; flex-direction: column; gap: 1.25rem; }
#productTable tbody { display: flex; flex-direction: column; gap: 1.25rem; width: 100%; }
#productTable thead { display: none !important; position: absolute; visibility: hidden; }

tr {
  display: grid; grid-template-areas: "producto marca" "detalle detalle" "um precio";
  grid-template-columns: 1fr auto; background: var(--bg); border: 1px solid var(--border); 
  border-radius: var(--radius); padding: 1.5rem; gap: 1rem; 
  box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.05), 0 1px 2px -1px rgba(0, 0, 0, 0.05);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  width: 100%; margin: 0;
}
tr:hover { transform: translateY(-2px); box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.04), 0 4px 6px -4px rgba(0, 0, 0, 0.02); }
body.dark-mode tr { background: var(--bg-subtle); border-color: rgba(255,255,255,0.08); }

td { display: flex; align-items: center; border: none; padding: 0; }
td.col-producto { grid-area: producto; font-size: 0.85rem; color: var(--text-muted); font-weight: 800; }
td.col-marca { grid-area: marca; justify-content: flex-end; }
td.col-detalle { grid-area: detalle; font-weight: 600; font-size: 1.1rem; line-height: 1.4; color: var(--text); word-break: break-word; }
td.col-um { grid-area: um; border-top: 1px solid var(--border); padding-top: 1rem; font-size: 0.9rem; color: var(--text-muted); }
td.col-precio { grid-area: precio; justify-content: flex-end; border-top: 1px solid var(--border); padding-top: 1rem; position: relative; }

.brand-badge { background: var(--bg-subtle); padding: 5px 12px; border-radius: 8px; font-size: 0.75rem; border: 1px solid var(--border); color: var(--text-muted); display: flex; gap: 4px; font-weight: 700; }
body.dark-mode .brand-badge { background: rgba(255,255,255,0.05); color: var(--text); }
.brand-label { font-weight: 600; opacity: 0.8; font-size: 0.65rem; text-transform: uppercase; }
.code-label { font-weight: 600; opacity: 0.8; font-size: 0.65rem; text-transform: uppercase; margin-right: 2px; }

/* PRICE HIGHLIGHTING */
.cell-value { font-weight: 800; font-size: 1.45rem; display: flex; align-items: center; gap: 6px; transition: color 0.3s; }

tr:has(.price-converted) {
  border-color: rgba(5, 150, 105, 0.3) !important;
  background: rgba(5, 150, 105, 0.02) !important;
}
.price-converted .cell-value { color: var(--accent) !important; text-shadow: 0 0 15px rgba(5, 150, 105, 0.1); }
.price-converted .currency-symbol { color: var(--accent) !important; }

.info-icon { font-size: 0.8rem; color: var(--accent); opacity: 0.8; margin-left: 4px; }

.price-tooltip {
  position: absolute; bottom: 115%; right: 0; 
  background: rgba(15, 23, 42, 0.9); backdrop-filter: blur(8px);
  color: #ffffff; padding: 8px 14px; border-radius: 12px; font-size: 0.95rem; font-weight: 800;
  white-space: nowrap; opacity: 0; visibility: hidden; transform: translateY(10px);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1); z-index: 100;
  border: 1px solid rgba(255,255,255,0.1);
  box-shadow: 0 10px 25px -5px rgba(0,0,0,0.3);
}
.col-precio:hover .price-tooltip, .col-precio:focus .price-tooltip { opacity: 1; visibility: visible; transform: translateY(0); }

/* --- DESKTOP TABLE --- */
@media (min-width: 850px) {
  :root { --header-height: 100px; }
  #productTable { display: table; border-spacing: 0; border-collapse: collapse; gap: 0; }
  #productTable tbody { display: table-row-group; }
  #productTable thead { display: table-header-group !important; position: static; visibility: visible; }
  th { text-align: left; padding: 1.25rem 1rem; background: var(--bg-subtle); color: var(--text-muted); font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.05em; border-bottom: 2px solid var(--border); }
  tr { display: table-row; background: transparent !important; border: none; box-shadow: none; border-radius: 0; margin: 0; }
  tr:hover { background: var(--bg-subtle) !important; }
  tr:has(.price-converted) { background: rgba(5, 150, 105, 0.02) !important; }
  td { display: table-cell; padding: 1.25rem 1rem; border-bottom: 1px solid var(--border); vertical-align: middle; }
  td.col-um, td.col-precio { border-top: none; padding-top: 1.25rem; font-size: 1.1rem; }
  td.col-marca { text-align: center; }
  .brand-badge { display: inline-flex; margin: 0 auto; }
  .brand-label, .code-label { display: none; }
}

#loader { display: flex; flex-direction: column; align-items: center; justify-content: center; min-height: 60vh; color: var(--text-muted); gap: 1.25rem; }
.spinner { width: 44px; height: 44px; border: 4px solid var(--border); border-top-color: var(--accent); border-radius: 50%; animation: spin 0.8s linear infinite; margin: 0 auto 1.5rem; }
@keyframes spin { to { transform: rotate(360deg); } }
.hidden { display: none !important; }