/* ========================================================================== */
    /* 1. VARIABLES Y TEMA */
/* ========================================================================== */
:root {
    --bg: #121212;
    --text: #ffffff;
    --card: #1e1e1e;
    --border: #333;
    --primary: #4fc3f7;
    --highlight: #ff9800;
    --barra-container: #444;
    --success: #4caf50;
    --warning: #fbc02d;
    --danger: #e53935;
    --shadow: rgba(255, 255, 255, 0.1);
}

body.light {
    --bg: #f4faff;
    --text: #111111;
    --card: #ffffff;
    --border: #999;
    --primary: #007bff;
    --highlight: #ff9800;
    --barra-container: #e9ecef;
    --success: #28a745;
    --warning: #ffc107;
    --danger: #dc3545;
    --shadow: rgba(0, 0, 0, 0.1);
}

/* ========================================================================== */
    /* 2. ESTILOS GENERALES Y LAYOUT */
/* ========================================================================== */

body {
    font-family: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, 'Helvetica Neue', sans-serif;
    margin: 0;
    padding: 20px;
    background: var(--bg);
    color: var(--text);
    transition: background 0.3s ease, color 0.3s ease;
}

h1 {
    text-align: center;
    font-size: 1.8rem;
    color: var(--primary);
}

.footer-autores {
    margin-top: 40px;
    text-align: center;
    font-size: 14px;
    color: var(--text);
    opacity: 0.7;
    border-top: 1px solid var(--border);
    padding-top: 15px;
}

/* ========================================================================== */
    /* 3. TABLA DE NOTAS */
/* ========================================================================== */

table {
    width: 100%;
    border-collapse: collapse;
    background: var(--card);
    box-shadow: 0 4px 12px var(--shadow);
    border-radius: 8px;
    overflow: hidden;
}

th, td {
    padding: 12px 15px;
    border: 1px solid var(--border);
    text-align: center;
    color: var(--text);
    transition: background-color 0.3s;
}

.seccion td {
    background-color: var(--highlight);
    color: white;
    font-weight: bold;
}

/* ========================================================================== */
    /* 4. FORMULARIO (INPUTS Y BARRAS) */
/* ========================================================================== */

input[type='number'] {
    width: 70px;
    padding: 8px;
    border: 1px solid var(--border);
    background-color: var(--bg);
    color: var(--text);
    border-radius: 4px;
    transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.3s ease, color 0.3s ease;
}

input[type='number']:focus {
    outline: none;
    box-shadow: 0 0 0 2px var(--primary);
}

input[disabled] {
    background-color: rgba(153, 153, 153, 0.2);
    cursor: not-allowed;
}

.barra-container {
    height: 10px;
    background: var(--barra-container);
    border-radius: 5px;
    overflow: hidden;
    margin-top: 5px;
}

.barra {
    height: 100%;
    width: 0%;
    transition: width 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.barra.verde { background-color: var(--success); }
.barra.amarillo { background-color: var(--warning); }
.barra.rojo { background-color: var(--danger); }

.success-bg { background-color: var(--success); }
.danger-bg { background-color: var(--danger); }

/* ========================================================================== */
    /* 5. BOTONES */
/* ========================================================================== */

button {
    padding: 8px 12px;
    border: none;
    border-radius: 6px;
    background: var(--primary);
    color: white;
    font-weight: bold;
    cursor: pointer;
    transition: transform 0.2s ease, background-color 0.3s ease;
}

button:hover {
    transform: scale(1.05);
    filter: brightness(1.1);
}

.acciones {
    text-align: center;
}

.exportar-container {
    margin: 20px 0;
    text-align: center;
    display: flex;
    justify-content: center;
    gap: 10px;
}

#modo-toggle {
    position: fixed;
    top: 20px;
    right: 20px;
    background: var(--card);
    color: var(--text);
    border: 1px solid var(--border);
    width: 45px;
    height: 45px;
    border-radius: 50%;
    font-size: 20px;
    z-index: 1000;
    box-shadow: 0 2px 5px var(--shadow);
}

.boton-instrucciones {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background-color: var(--highlight);
    color: #fff;
    font-size: 24px;
    border: none;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    cursor: pointer;
    box-shadow: 0 4px 10px rgba(0,0,0,0.3);
    transition: background-color 0.3s ease, transform 0.2s ease;
    z-index: 999;
}
.boton-instrucciones:hover {
    background-color: #ffa726;
    transform: scale(1.1);
}

/* ========================================================================== */
    /* 6. SECCIÓN DE INSTRUCCIONES */
/* ========================================================================== */

.instrucciones-udi {
    background: var(--card);
    border-left: 5px solid var(--primary);
    padding: 20px;
    margin-bottom: 25px;
    box-shadow: 0 4px 12px var(--shadow);
    border-radius: 8px;
    opacity: 1;
    max-height: 1000px;
    overflow: hidden;
    transition: max-height 0.5s ease-out, opacity 0.5s ease-out, padding 0.5s ease-out, margin 0.5s ease-out;
}

.instrucciones-udi.ocultar {
    max-height: 0;
    opacity: 0;
    pointer-events: none;
    padding-top: 0;
    padding-bottom: 0;
    margin-bottom: 0;
}

.instrucciones-udi h2 {
    margin-top: 0;
    font-size: 1.5rem;
    color: var(--primary);
}
.instrucciones-udi h3 {
    color: var(--highlight);
    margin-top: 15px;
    margin-bottom: 5px;
    font-size: 1.1rem;
}
.instrucciones-udi p {
    font-size: 15px;
    line-height: 1.6;
    margin: 6px 0;
}

/* ========================================================================== */
    /* 7. DISEÑO RESPONSIVO (MÓVIL) */
/* ========================================================================== */

@media (max-width: 768px) {
    body {
        padding: 10px;
        font-size: 14px;
    }

    h1 {
        font-size: 1.5rem;
        margin-top: 60px;
    }

    table, thead, tbody, th, td, tr {
        display: block;
    }

    tr {
        border-bottom: 2px solid var(--border);
        margin-bottom: 15px;
    }

    th {
        display: none;
    }

    td {
        border: none;
        padding: 8px 10px;
        text-align: right;
        display: flex;
        justify-content: space-between;
        align-items: center;
    }

    td::before {
        content: attr(data-label);
        font-weight: bold;
        color: var(--primary);
        text-align: left;
        flex-shrink: 0;
    }

    td.acciones {
        display: flex;
        flex-wrap: wrap;
        gap: 8px;
        justify-content: center;
        margin-top: 10px;
        padding: 10px 0;
    }

    .acciones button {
        flex-grow: 1;
        padding: 10px;
    }

    input[type='number'] {
        width: auto;
        flex-grow: 1;
        font-size: 16px;
        padding: 8px;
        text-align: right;
    }

    #modo-toggle {
        top: 10px;
        right: 10px;
    }
}

/* ========================================================================== */
    /* 8. ESTILOS DEL MODAL PERSONALIZADO */
/* ========================================================================== */

.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 2000;
    visibility: hidden;
    opacity: 0;
    transition: visibility 0.3s, opacity 0.3s;
}

.modal-overlay.visible {
    visibility: visible;
    opacity: 1;
}

.modal-content {
    background-color: var(--card);
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 8px 20px var(--shadow);
    text-align: center;
    max-width: 400px;
    width: 90%;
    transform: translateY(-20px);
    transition: transform 0.3s ease-out;
}

.modal-overlay.visible .modal-content {
    transform: translateY(0);
}

.modal-content h3 {
    color: var(--primary);
    margin-top: 0;
    font-size: 1.6rem;
}

.modal-content p {
    color: var(--text);
    margin-bottom: 20px;
    line-height: 1.5;
}

.modal-content input[type="number"] {
    width: calc(100% - 20px);
    margin-bottom: 20px;
    text-align: center;
    font-size: 1.2rem;
    padding: 10px;
}

.modal-buttons {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-top: 20px;
}

.modal-buttons button {
    padding: 10px 25px;
    font-size: 1rem;
    border-radius: 8px;
    transition: background-color 0.3s ease, transform 0.2s ease;
}

.modal-buttons button#modal-ok-btn {
    background-color: var(--success);
}

.modal-buttons button#modal-cancel-btn {
    background-color: var(--danger);
}

.modal-buttons button#modal-ok-btn:hover {
    background-color: #388e3c;
}

.modal-buttons button#modal-cancel-btn:hover {
    background-color: #c62828;
}

.hidden {
    display: none !important;
}

/* ========================================================================== */
    /* 9. COLORES DE FILA COMPLETA SEGÚN NOTA INDIVIDUAL */
/* ========================================================================== */

tr.fila-verde td {
    background-color: #c8e6c9 !important;
    color: #1b5e20 !important;
}

tr.fila-amarilla td {
    background-color: #fff9c4 !important;
    color: #f57f17 !important;
}

tr.fila-roja td {
    background-color: #ffcdd2 !important;
    color: #b71c1c !important;
}

/* ======================= */
/* 🎯 ESTILOS PARA IMPRESIÓN */
/* ======================= */
@media print {
  body * {
    visibility: hidden; /* Oculta todo inicialmente */
  }

  table, table * {
    visibility: visible;  /* Solo se muestra la tabla */
  }

  table {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    border-collapse: collapse;
  }

  table td, table th {
    border: 1px solid black;
    padding: 4px;
  }

  .fila-verde td,
  .verde-input {
    background-color: #d4edda !important;
  }

  .fila-amarilla td,
  .amarillo-input {
    background-color: #fff3cd !important;
  }

  .fila-roja td,
  .rojo-input {
    background-color: #f8d7da !important;
  }

  .seccion td {
    background-color: orange !important;
    font-weight: bold;
  }

  .barra-container,
  #modo-toggle,
  .exportar-container,
  .acciones,
  .footer-autores,
  .boton-instrucciones,
  #custom-modal,
  #bloqueInstrucciones {
    display: none !important; /* Oculta elementos no deseados */
  }
}