/* style.css */
@import url('https://fonts.googleapis.com/css2?family=Roboto:wght@400;500;700&display=swap');

:root {
  --bg-dark: #222738;
  --bg-light: #2A3043;
  --text-light: #EFEFEF;
  --text-gray: #A9B1D6;
  --primary-orange: #FF9E64;
  --primary-blue: #61AFEF;
  
  /* Colores de Categorías */
  --color-metales-alcalinos: #E06C75; --color-metales-alcalinoterreos: #56B6C2; --color-metales-de-transicion: #FF9E64; --color-lantanidos: #98C379; --color-actinidos: #E5C07B; --color-metales-post-transicion: #61AFEF; --color-metaloides: #C678DD; --color-no-metales: #ABB2BF; --color-halogenos: #98C379; --color-gases-nobles: #C678DD; --color-desconocido: #4A5064;

  /* Colores de Solubilidad */
  --color-soluble: #4CAF50; --color-ligeramente-soluble: #FFC107; --color-insoluble: #F44336; --color-inestable: #2196F3;
}
body {
  margin: 0;
  font-family: 'Roboto', sans-serif;
  background-color: var(--bg-dark);
  color: var(--text-light);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
.app-container { display: flex; max-width: 1600px; margin: 0 auto; min-height: 100vh; }
.sidebar { width: 70px; background-color: #1A1B26; padding-top: 20px; display: flex; flex-direction: column; align-items: center; gap: 30px; flex-shrink: 0; }
.sidebar-icon { color: var(--text-gray); font-size: 24px; cursor: pointer; transition: color 0.2s, transform 0.2s, background-color 0.2s; padding: 10px; border-radius: 50%; }
.sidebar-icon:hover { color: var(--text-light); background-color: var(--bg-light); }
.sidebar-icon.active { color: var(--text-light); background-color: var(--primary-blue); transform: scale(1.1); }
.main-content { flex-grow: 1; padding: 20px 40px; overflow-x: hidden; }
.app-header { display: flex; flex-wrap: wrap; align-items: center; margin-bottom: 20px; gap: 20px; justify-content: space-between; }
.app-header h1 { font-size: 28px; font-weight: 500; margin: 0; }
.back-button { background: none; border: none; color: var(--text-light); font-size: 18px; cursor: pointer; padding: 8px 15px; border-radius: 8px; transition: background-color 0.2s; }
.back-button:hover { background-color: var(--bg-light); }
.legend-container { display: flex; flex-wrap: wrap; gap: 10px 20px; padding: 10px; border-radius: 8px; margin-top: 15px; }
.legend-item { display: flex; align-items: center; gap: 8px; }
.legend-color { width: 15px; height: 15px; border-radius: 50%; flex-shrink: 0; }
.legend-text { font-size: 12px; color: var(--text-gray); }
.periodic-table-layout { display: flex; flex-direction: column; gap: 10px; margin-top: 20px; }
.periodic-table-grid { display: grid; grid-template-columns: repeat(18, minmax(0, 1fr)); gap: 6px; }
.element-cell { position: relative; width: 100%; aspect-ratio: 1 / 1.1; background-color: var(--bg-light); border: 1px solid #3B4257; border-radius: 6px; display: flex; flex-direction: column; justify-content: center; align-items: center; cursor: pointer; transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s; padding: 4px; box-sizing: border-box; border-bottom: 4px solid transparent; }
.element-cell.empty { background-color: transparent; border: none; cursor: default; }
.element-cell:not(.empty):hover { transform: translateY(-4px); box-shadow: 0 5px 15px rgba(0,0,0,0.3); border-color: var(--primary-blue); }
.element-cell.hidden { visibility: hidden; }
.element-cell .number { position: absolute; top: 5px; left: 5px; font-size: 10px; color: var(--text-gray); }
.element-cell .symbol { font-size: clamp(14px, 2.5vw, 22px); font-weight: 700; margin-bottom: 2px; }
.element-cell .name { font-size: clamp(7px, 1.5vw, 10px); color: var(--text-gray); text-align: center; }
.element-cell.placeholder { justify-content: center; align-items: center; font-size: 12px; color: var(--text-gray); background-color: #2F3549; }
.category-metales-alcalinos { border-bottom-color: var(--color-metales-alcalinos); } .category-metales-alcalinoterreos { border-bottom-color: var(--color-metales-alcalinoterreos); } .category-metales-de-transicion { border-bottom-color: var(--color-metales-de-transicion); } .category-lantanidos { border-bottom-color: var(--color-lantanidos); } .category-actinidos { border-bottom-color: var(--color-actinidos); } .category-metales-post-transicion { border-bottom-color: var(--color-metales-post-transicion); } .category-metaloides { border-bottom-color: var(--color-metaloides); } .category-no-metales { border-bottom-color: var(--color-no-metales); } .category-halogenos { border-bottom-color: var(--color-halogenos); } .category-gases-nobles { border-bottom-color: var(--color-gases-nobles); } .category-desconocido { border-bottom-color: var(--color-desconocido); }
.element-detail-view { width: 100%; animation: fadeIn 0.5s ease-in-out; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }
.element-detail-header { display: flex; align-items: center; gap: 20px; padding: 20px; background-color: var(--bg-light); border-radius: 8px; margin-bottom: 20px; }
.element-detail-header .symbol { font-size: 4em; font-weight: bold; line-height: 1; color: var(--primary-orange); }
.element-detail-header .header-info { font-size: 1.5em; }
.element-detail-header .header-info .number { font-size: 0.8em; color: var(--text-gray); }
.detail-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 20px; }
.detail-card { background-color: var(--bg-light); border-radius: 8px; padding: 20px; }
.detail-card h3 { margin-top: 0; border-bottom: 2px solid var(--primary-blue); padding-bottom: 10px; margin-bottom: 15px; color: var(--primary-blue); }
.info-row { display: flex; justify-content: space-between; padding: 8px 0; font-size: 14px; border-bottom: 1px solid #3B4257; }
.info-row:last-child { border-bottom: none; }
.info-row span:first-child { color: var(--text-gray); }
.info-row span:last-child { font-weight: 500; text-align: right; }
.detail-description { font-size: 15px; line-height: 1.6; color: var(--text-gray); }
.wiki-link-button { display: inline-block; margin-top: 20px; padding: 12px 25px; background-color: var(--primary-blue); color: var(--text-light); text-decoration: none; border-radius: 8px; font-weight: bold; transition: background-color 0.2s; }
.wiki-link-button:hover { background-color: #7AC0EF; }
.search-input-wrapper { display: flex; align-items: center; background-color: var(--bg-light); padding: 5px 15px; border-radius: 8px; }
.search-input-wrapper i { color: var(--text-gray); }
.search-input { background: transparent; border: none; outline: none; color: var(--text-light); font-size: 14px; padding: 8px; width: 200px; }
.solubility-container { overflow-x: auto; }
.solubility-table { display: grid; grid-template-columns: 60px repeat(21, 40px); gap: 3px; min-width: 950px; margin-top: 20px; }
.solubility-cell, .solubility-header { width: 40px; height: 40px; display: flex; justify-content: center; align-items: center; border-radius: 4px; font-weight: 500; }
.solubility-header { color: var(--text-gray); } .anion-header { width: 60px; }
.sol-S { background-color: var(--color-soluble); } .sol-L { background-color: var(--color-ligeramente-soluble); color: #000; } .sol-I { background-color: var(--color-insoluble); } .sol-U { background-color: var(--color-inestable); } .sol-- { background-color: var(--bg-light); }
@media (max-width: 768px) { .app-container { flex-direction: column; } .sidebar { width: 100%; height: 60px; flex-direction: row; justify-content: space-around; padding-top: 0; order: 1; } .main-content { padding: 15px; } }