/* --- Variables de Color y Diseño --- */
:root {
    --primary-color: #007bff; /* Azul primario moderno */
    --primary-hover: #0056b3;
    --secondary-color: #6c757d; /* Gris secundario */
    --secondary-hover: #5a6268;
    --warn-color: #f39c12; /* Naranja/Ámbar para advertencia */
    --warn-hover: #e67e22;
    --danger-color: #dc3545;
    --success-color: #28a745;
    --success-hover: #218838;
    --background-color: #f8f9fa;
    --card-background: #ffffff;
    --text-color: #495057;
    --heading-color: #212529;
    --border-color: #dee2e6;
    --font-family: 'Poppins', sans-serif;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    --border-radius: 8px;
}

/* --- Estilos Generales y Reset --- */
*, *::before, *::after { box-sizing: border-box; }
body {
    font-family: var(--font-family); background-color: var(--background-color); color: var(--text-color);
    margin: 0; padding: 2rem 1rem; line-height: 1.6; font-size: 16px;
}
.container { max-width: 1400px; margin: 0 auto; }
h1, h2, h3, h4 { color: var(--heading-color); font-weight: 600; margin: 0; }
h1 { font-size: 3rem; line-height: 1.2; }
h2.card-title { font-size: 1.25rem; margin-bottom: 1.5rem; display: flex; align-items: center; gap: 0.75rem; color: var(--primary-color); }
h3.subheader { margin-top: 1.5rem; margin-bottom: 1rem; text-align: left; }
h3.subheader-form { font-size: 1rem; color: var(--primary-color); border-bottom: 1px solid var(--border-color); padding-bottom: 0.5rem; margin-top: 1.5rem; margin-bottom: 1rem; }
h3.subheader-form:first-of-type { margin-top: 0; }
hr { border: 0; height: 1px; background-color: var(--border-color); margin: 1.5rem 0; }
.hidden { display: none !important; }

/* --- Encabezado --- */
.main-header { display: flex; flex-direction: column; align-items: flex-start; gap: 5px; margin-bottom: 2rem; }
.logo { max-width: 160px; width: 100%; height: auto; margin-bottom: 10px; }
.header-title p { margin: 0; font-size: 0.9rem; color: #6c757d; max-width: 600px; }
@media (max-width: 768px) {
    .main-header { align-items: center; text-align: center; }
    h1 { font-size: 2.2rem; }
    .logo { max-width: 150px; }
}

/* --- Layout Principal --- */
.calculator-grid { display: grid; grid-template-columns: 1.2fr 1fr; gap: 2rem; align-items: flex-start; }
@media (max-width: 1024px) { .calculator-grid { grid-template-columns: 1fr; } }

/* --- Contenedores Ocultos --- */
.print-only-summary, .print-only-diagram { display: none; }

/* --- Tarjetas (Cards) --- */
.card { background-color: var(--card-background); border-radius: var(--border-radius); box-shadow: var(--shadow); margin-bottom: 2rem; overflow: hidden; }
.card-title { padding: 1rem 1.5rem; background-color: #f8f9fa; border-bottom: 1px solid var(--border-color); }
.card-title i { color: var(--primary-color); }
.card-content { padding: 1.5rem; }

/* --- Formularios y Entradas --- */
.input-group { margin-bottom: 1rem; }
.input-grid-col-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; align-items: start; }
.input-group.full-width { grid-column: 1 / -1; }
#capacidadManualContainer { background-color: #fffbe6; padding: 1rem; border-radius: 8px; margin-top: -0.5rem; border: 1px solid var(--warn-color); }
@media (max-width: 500px) { .input-grid-col-2 { grid-template-columns: 1fr; } }
label { display: block; margin-bottom: 0.5rem; font-weight: 500; font-size: 0.9rem; }
input[type="text"], input[type="tel"], input[type="number"], select {
    width: 100%; padding: 12px; border: 1px solid var(--border-color); border-radius: 8px; font-size: 1rem;
    font-family: var(--font-family); transition: border-color 0.3s, box-shadow 0.3s; background-color: #fdfdfd;
}
input:focus, select:focus { outline: none; border-color: var(--primary-color); box-shadow: 0 0 0 4px rgba(0, 123, 255, 0.2); }
input[type="range"] { -webkit-appearance: none; appearance: none; width: 100%; height: 8px; background: var(--border-color); outline: none; border-radius: 4px; margin-top: 0.5rem; }
input[type="range"]::-webkit-slider-thumb { -webkit-appearance: none; appearance: none; width: 20px; height: 20px; background: var(--primary-color); cursor: pointer; border-radius: 50%; }
input[type="range"]::-moz-range-thumb { width: 20px; height: 20px; background: var(--primary-color); cursor: pointer; border-radius: 50%; }

/* --- Estilos de Botones --- */
.btn {
    padding: 12px 24px; border: 2px solid transparent; border-radius: var(--border-radius); cursor: pointer; font-size: 1rem; font-weight: 600;
    font-family: var(--font-family); transition: all 0.2s ease-in-out; display: inline-flex; align-items: center; gap: 0.75rem; justify-content: center; text-decoration: none;
}
/* 1. Botón Primario */
.btn-primary {
    background-color: var(--primary-color); color: white; width: 100%; font-size: 1.2rem;
}
.btn-primary:hover { background-color: var(--primary-hover); transform: translateY(-2px); box-shadow: 0 4px 10px rgba(0,0,0,0.1); }
.btn-primary:focus-visible { outline: none; box-shadow: 0 0 0 4px rgba(0, 123, 255, 0.3); }
.btn-primary:active { transform: translateY(0); box-shadow: none; }

/* Botones Sólidos (para acciones como Agregar) */
.btn-add { background-color: var(--success-color); color: #fff; margin-top: 10px; border: none; padding: 12px 20px; }
.btn-add:hover { background-color: var(--success-hover); }

/* 2. Botones Secundarios (Ghost/Outline) */
.btn-secondary, .btn-secondary-warn {
    background-color: transparent; padding: 10px 20px; font-size: 0.9rem;
}
.btn-secondary { color: var(--secondary-color); border-color: var(--secondary-color); }
.btn-secondary:hover, .btn-secondary:focus-visible { background-color: var(--secondary-color); color: white; }

.btn-secondary-warn { color: var(--warn-color); border-color: var(--warn-color); }
.btn-secondary-warn:hover, .btn-secondary-warn:focus-visible { background-color: var(--warn-color); color: white; }

/* 3. Botón Terciario (Enlace) */
.btn-tertiary {
    background-color: transparent; color: var(--danger-color); padding: 8px 15px; font-size: 0.9rem; border: none;
    text-decoration: none;
}
.btn-tertiary:hover, .btn-tertiary:focus-visible { text-decoration: underline; background-color: transparent; }

.mode-toggle { text-align: center; margin-top: 1.5rem; }

/* --- Lista de Aparatos --- */
.resumen-totales { display: flex; flex-wrap: wrap; gap: 1.5rem; background-color: #f8f9fa; padding: 1rem; border-radius: 8px; margin-bottom: 1rem; font-weight: 500; }
#listaAparatos ul { list-style: none; padding: 0; }
#listaAparatos li { background: #fff; padding: 10px 15px; border: 1px solid var(--border-color); border-radius: 8px; margin-bottom: 8px; display: flex; justify-content: space-between; align-items: center; font-size: 0.9rem; }
#listaAparatos li .actions { display: flex; gap: 8px; }
#listaAparatos li .actions button { padding: 4px 8px; font-size: 12px; background: none; border: none; cursor: pointer; color: var(--secondary-color); }
#listaAparatos li .actions button:hover { color: var(--primary-color); }
#listaAparatos li .actions .remover { color: var(--danger-color); }

/* --- Sección de Resultados --- */
#placeholder-results { border: 2px dashed var(--border-color); box-shadow: none; }
#resultados .resultado-header { display: flex; justify-content: space-between; align-items: center; padding: 1rem 1.5rem; background-color: #f8f9fa; border-bottom: 1px solid var(--border-color); }
.resultado-cliente p { margin: 0.25rem 0; }
.resultado-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 1rem; }
.resultado-item { background-color: #f8f9fa; padding: 1rem; border-radius: 8px; text-align: center; border: 1px solid var(--border-color); display: flex; flex-direction: column; justify-content: center; }
.resultado-item small.config-detail { margin-top: 0.5rem; display: block; font-weight: 600; color: var(--warn-hover); }
.resultado-item.full-span-desktop { grid-column: 1 / -1; }

.battery-details {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr)); /* <-- CORRECCIÓN AQUÍ */
    gap: 1rem;
    text-align: center;
    margin-top: 1rem;
}
.battery-details div { background-color: white; padding: 0.5rem; border-radius: 6px; border: 1px solid #ddd; }
.battery-details span { font-size: 0.8rem; display: block; color: #7f8c8d; }
.battery-details p { font-size: 1.1rem; }

/* --- Sección de Estimaciones y Gráfico --- */
.estimaciones-container { display: grid; grid-template-columns: 1.2fr 1fr; gap: 2rem; align-items: center; }
@media (max-width: 768px) { .estimaciones-container { grid-template-columns: 1fr; } .estimaciones-imagen { display: none; } }
.grafico-circular-container { display: flex; justify-content: center; align-items: center; margin-bottom: 1.5rem; }
.grafico-circular { position: relative; width: 180px; height: 180px; border-radius: 50%; background: conic-gradient(var(--success-color) 0% var(--autonomy-percentage, 0%), var(--border-color) var(--autonomy-percentage, 0%) 100%); display: flex; justify-content: center; align-items: center; transition: background 0.5s; }
.grafico-centro { width: 150px; height: 150px; background: white; border-radius: 50%; display: flex; flex-direction: column; justify-content: center; align-items: center; text-align: center; }
.grafico-centro span { font-size: 0.9rem; color: #6c757d; }
.grafico-centro p { font-size: 2.2rem; font-weight: 700; color: var(--heading-color); margin: 0; line-height: 1.1; }
.estimaciones-items { border: 1px solid var(--border-color); padding: 1rem; border-radius: var(--border-radius); }
.estimaciones-items p { margin: 0.5rem 0; font-size: 1rem; display: flex; justify-content: space-between; }
.estimaciones-items p span { font-weight: 600; color: var(--heading-color); }

/* --- Acciones y Footer --- */
.actions-footer { margin-top: 1.5rem; display: flex; justify-content: flex-end; align-items: center; gap: 1rem; flex-wrap: wrap; }
.footer { text-align: center; margin-top: 3rem; font-size: 0.9rem; color: #6c757d; display: flex; justify-content: center; align-items: center; gap: 10px; }
.footer-logo { height: 50px; width: auto; max-width: 200px; }