@import "https://fonts.googleapis.com/css2?family=Jersey+10&display=swap";
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auto;display:flex}.sudoku-header{justify-content:space-between;align-items:center;width:100%;max-width:26rem;display:flex}.sudoku-win-banner{color:#15803d;text-align:center;background-color:#f0fdf4;border:1px solid #86efac;border-radius:.75rem;padding:.75rem 1.25rem;font-weight:700}.sudoku-grid{box-shadow:var(--shadow);background-color:#94a3b8;border:3px solid #334155;border-radius:.75rem;grid-template-rows:repeat(9,2.5rem);grid-template-columns:repeat(9,2.5rem);gap:1px;margin:0 auto;padding:3px;display:grid}.sudoku-input{box-sizing:border-box;text-align:center;width:2.5rem;height:2.5rem;color:var(--accent);background-color:#fff;border:1px solid #cbd5e1;outline:none;font-size:1.25rem;font-weight:700;transition:background-color .15s,border-color 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var(--border);background:#00000005;border-radius:.75rem;flex-direction:column;gap:.375rem;padding:1rem 1.25rem;display:flex}.summary-question-title{color:var(--text-main);margin-bottom:.25rem;font-size:1rem;font-weight:700}.summary-text{color:var(--text-secondary);margin:0;font-size:.9375rem}.summary-text span{color:var(--text-main);font-weight:600}}@media screen and (max-width:900px){.app-container{flex-direction:column}.sidebar{border-right:none;border-bottom:1px solid var(--border);flex-flow:wrap;justify-content:space-between;width:100%;padding:1rem}.sidebar-nav{flex-flow:wrap;justify-content:center}.theme-switch-wrapper{margin-top:0;padding-top:0}.main-content{padding:1.25rem 1rem}}@media (max-width:768px){.news-item{flex-direction:column;gap:1rem}.news-item-image{width:100%;height:12rem}}body.dark-mode,body.dark-mode .app-container{background-color:var(--dark-bg);color:var(--dark-text-main)}body.dark-mode .sidebar{background-color:var(--dark-sidebar-bg);border-color:var(--dark-border)}body.dark-mode .sidebar-title{color:var(--dark-text-light)}body.dark-mode .sidebar-button{color:var(--dark-text-secondary)}body.dark-mode .sidebar-button:hover{background-color:var(--dark-btn-hover);color:var(--dark-accent)}body.dark-mode .sidebar-button.active{color:var(--dark-accent);background-color:#38bdf826;font-weight:700}body.dark-mode .theme-toggle-button{background-color:var(--dark-btn-bg);border-color:var(--dark-border);color:var(--dark-text-light)}body.dark-mode .theme-toggle-button:hover{background-color:var(--dark-btn-hover)}body.dark-mode .page-title,body.dark-mode .formula-section-title,body.dark-mode .summary-title,body.dark-mode .formula-title,body.dark-mode .news-item-title,body.dark-mode .active-question-panel h2,body.dark-mode #h1Operaciones,body.dark-mode .exercises-history-title,body.dark-mode .summary-question-title{color:var(--dark-text-light)}body.dark-mode .btn{background-color:var(--dark-btn-bg);color:var(--dark-text-light);border-color:var(--dark-border)}body.dark-mode .btn:hover{background-color:var(--dark-btn-hover)}body.dark-mode .input,body.dark-mode textarea,body.dark-mode select,body.dark-mode .formulas-search-input,body.dark-mode .category-search-input{background-color:var(--dark-input-bg);color:var(--dark-text-light);border-color:var(--dark-input-border)}body.dark-mode .input::placeholder,body.dark-mode textarea::placeholder,body.dark-mode .formulas-search-input::placeholder,body.dark-mode .category-search-input::placeholder{color:var(--dark-placeholder)}body.dark-mode select option{background-color:var(--dark-bg);color:var(--dark-text-light)}body.dark-mode .card,body.dark-mode .summary-card,body.dark-mode .question-panel,body.dark-mode .formula-section,body.dark-mode .board-container,body.dark-mode .game-card{background-color:var(--dark-card-bg);border-color:var(--dark-border);color:var(--dark-text-light)}body.dark-mode .formula-item,body.dark-mode .summary-item,body.dark-mode .exercises-history-item{background-color:#ffffff0a;border-color:#ffffff0f}body.dark-mode .radio-label{color:var(--dark-text-light);background-color:#ffffff0a;border-color:#ffffff14}body.dark-mode .radio-label:hover{border-color:var(--dark-accent);background-color:#38bdf81a}body.dark-mode .btnPregunta{background-color:var(--dark-btn-bg);color:var(--dark-text-light);border-color:var(--dark-border)}body.dark-mode .btnPregunta:hover{background-color:var(--dark-btn-hover);color:var(--dark-accent)}body.dark-mode .formula-category-title{color:var(--dark-accent)}body.dark-mode .formula-category-tag{color:var(--dark-accent);background-color:#38bdf826}body.dark-mode .formula-variables,body.dark-mode .formula-application,body.dark-mode .summary-text,body.dark-mode .news-item-description,body.dark-mode .indicator-label{color:var(--dark-text-secondary)}body.dark-mode .formula-variables strong,body.dark-mode .formula-application strong,body.dark-mode .summary-text span,body.dark-mode .formula-math-display{color:var(--dark-text-light)}body.dark-mode .formulas-tab-btn{background-color:var(--dark-btn-bg);border-color:var(--dark-border);color:var(--dark-text-secondary)}body.dark-mode .formulas-tab-btn:hover{background-color:var(--dark-btn-hover);color:var(--dark-text-light)}body.dark-mode .formulas-tab-btn.active{background-color:var(--dark-accent);color:#0b0f19;border-color:var(--dark-accent);font-weight:700}body.dark-mode .news-item{background-color:var(--dark-card-bg);border-color:var(--dark-border)}body.dark-mode .news-category-tag{color:var(--dark-accent);background-color:#38bdf826}body.dark-mode .news-item-date,body.dark-mode .news-last-update,body.dark-mode .news-empty-text,body.dark-mode .exercises-history-empty,body.dark-mode .formulas-empty-state{color:var(--dark-text-muted)}body.dark-mode .filter-btn{background-color:var(--dark-btn-bg);border-color:var(--dark-border);color:var(--dark-text-light)}body.dark-mode .filter-btn:hover{background-color:var(--dark-btn-hover);color:var(--dark-accent)}body.dark-mode .filter-btn.active{background-color:var(--dark-btn-hover);border-color:var(--dark-accent);color:var(--dark-accent);font-weight:700}body.dark-mode .filter-dropdown{border-color:var(--dark-border);color:var(--dark-text-light);background-color:#1a2234;box-shadow:0 10px 25px -5px #0009}body.dark-mode .filter-label,body.dark-mode .category-option{color:var(--dark-text-light)}body.dark-mode .filter-input{background-color:var(--dark-input-bg);border-color:var(--dark-input-border);color:var(--dark-text-light)}body.dark-mode .category-option:hover{background-color:#ffffff14}body.dark-mode .news-expand-btn{color:var(--dark-accent)}body.dark-mode .news-expand-btn:hover{background-color:#ffffff14}body.dark-mode .btn-game-return{background-color:var(--dark-btn-bg);border-color:var(--dark-border);color:var(--dark-text-light)}body.dark-mode .btn-game-return:hover{background-color:var(--dark-btn-hover)}body.dark-mode .game-card p{color:var(--dark-text-light)}body.dark-mode .diff-btn{background-color:var(--dark-btn-bg);border-color:var(--dark-border);color:var(--dark-text-secondary)}body.dark-mode .diff-btn:hover{background-color:var(--dark-btn-hover);color:var(--dark-text-light)}body.dark-mode .diff-btn.active{background-color:var(--dark-accent);color:#0b0f19;border-color:var(--dark-accent);font-weight:700}body.dark-mode .timer,body.dark-mode .mine-count{color:#f87171;text-shadow:0 0 10px #f8717166;background-color:#030712;border-color:#1f2937}body.dark-mode .btn-minesweeper-reset{background-color:var(--dark-btn-bg);border-color:var(--dark-border)}body.dark-mode .btn-minesweeper-reset:hover{background-color:var(--dark-btn-hover)}body.dark-mode .board{background-color:#1e293b;border-color:#0f172a}body.dark-mode .cell{color:var(--dark-text-light);background-color:#334155;border:3px solid #1e293b;border-color:#475569 #1e293b #1e293b #475569}body.dark-mode .cell:hover:not(.revealed):not(.flagged){background-color:#3e4f68}body.dark-mode .cell.revealed{background-color:#1e293b;border:1px solid #0f172a}body.dark-mode .cell.mine-hit{background-color:#dc262659!important;border-color:#ef4444!important}body.dark-mode .cell.n1{color:#60a5fa}body.dark-mode .cell.n2{color:#4ade80}body.dark-mode .cell.n3{color:#f87171}body.dark-mode .cell.n4{color:#c084fc}body.dark-mode .cell.n5{color:#fb923c}body.dark-mode .cell.n6{color:#22d3ee}body.dark-mode .cell.n7{color:#f1f5f9}body.dark-mode .cell.n8{color:#cbd5e1}body.dark-mode .overlay-content{background-color:var(--dark-card-bg);border-color:var(--dark-border)}body.dark-mode .overlay-title.won{color:#4ade80}body.dark-mode .overlay-title.lost{color:#f87171}body.dark-mode .overlay-sub{color:var(--dark-text-secondary)}body.dark-mode .overlay-btn.won{color:#0b0f19;background-color:#22c55e}body.dark-mode .overlay-btn.lost{color:#fff;background-color:#ef4444}body.dark-mode .sudoku-grid{background-color:#334155;border-color:#475569}body.dark-mode .sudoku-input{color:var(--dark-accent);background-color:#1e293b;border-color:#334155}body.dark-mode .sudoku-input:focus{background-color:#0c4a6e;border-color:#38bdf8}body.dark-mode .sudoku-input.fixed-value{color:var(--dark-text-light);background-color:#0f172a;font-weight:800}body.dark-mode .sudoku-input.cell-correct{color:#4ade80;background-color:#22c55e26;border-color:#22c55e}body.dark-mode .sudoku-input.cell-incorrect{color:#f87171;background-color:#ef444433;border-color:#ef4444}body.dark-mode .sudoku-win-banner{color:#4ade80;background-color:#22c55e26;border-color:#22c55e4d}body.dark-mode .input.input-error{color:#fca5a5!important;background-color:#b91c1c40!important;border-color:#ef4444!important}body.dark-mode .input.input-error:focus{border-color:#f87171!important;box-shadow:0 0 0 3px #ef44444d!important}body.dark-mode .exercises-history-header{border-bottom-color:var(--dark-border)}body.dark-mode .exercises-history-count{color:var(--dark-accent);background-color:#38bdf833}body.dark-mode .exercises-history-badge{color:var(--dark-text-secondary);background-color:#ffffff14}body.dark-mode .exercises-history-expr{color:var(--dark-text-light)}body.dark-mode .exercises-history-icon{color:#4ade80}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}