/* --- VARIABLES DE COLOR (DISEÑO OSCURO) --- */
:root {
    --color-primary-dark: #2C2C2C;
    --color-card-bg: #3A3A3A;
    --color-text-white: #FFFFFF;
    --color-border: #777777;
    --color-accent: #E0E0E0;
    --box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

/* --- ESTILOS GENERALES --- */
body {
    font-family: 'Helvetica', Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: var(--color-primary-dark);
    color: var(--color-text-white);
    line-height: 1.6;
    display: flex;
    justify-content: center;
    min-height: 100vh;
    padding: 20px;
}

.texto-cinzel {
    font-family: 'Cinzel', serif;
    font-weight: 400;
    letter-spacing: 2px;
}

.container {
    width: 100%;
    max-width: 1000px;
    margin: 0 auto;
}

/* --- ENCABEZADO FIJO --- */
.app-header {
    text-align: center;
    padding: 40px 20px 20px;
    border-bottom: 1px dashed var(--color-text-white);
    margin-bottom: 30px;
}

.app-header h1 {
    font-size: 2.5em;
    margin: 0;
    color: var(--color-text-white);
}

.app-header .subtitle {
    font-size: 1em;
    letter-spacing: 4px;
    color: #CCCCCC;
    margin-top: 5px;
}

/* --- TARJETAS Y CONTENEDORES --- */
.form-container {
    display: grid;
    gap: 25px;
}

.card {
    background-color: var(--color-card-bg);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: 25px;
    box-shadow: var(--box-shadow);
}

.card h2 {
    font-family: 'Cinzel', serif;
    margin-top: 0;
    margin-bottom: 20px;
    font-size: 1.4em;
    border-bottom: 1px solid var(--color-border);
    padding-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.data-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}

.cost-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}

@media (min-width: 768px) {
    .data-grid {
        grid-template-columns: 1fr 1fr;
    }

    .cost-grid {
        grid-template-columns: 2fr 1.5fr;
    }
}

/* --- INPUTS --- */
.input-group {
    margin-bottom: 15px;
}

.input-group label {
    display: block;
    margin-bottom: 5px;
    font-size: 0.9em;
    color: #CCC;
}

.input-group input[type="text"],
.input-group input[type="tel"],
.input-group input[type="number"],
.input-group input[type="date"],
.input-group select,
.input-group textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--color-border);
    border-radius: 4px;
    font-size: 1em;
    background-color: transparent;
    color: var(--color-text-white);
    box-sizing: border-box;
}

.input-group input:focus,
.input-group select:focus,
.input-group textarea:focus {
    outline: none;
    border-color: var(--color-text-white);
}

.input-group select option {
    background-color: var(--color-primary-dark);
    color: white;
}

.dimension-group {
    display: flex;
    gap: 15px;
}

.dimension-group>div {
    flex: 1;
}

/* --- ARTÍCULOS Y BOTONES --- */
.product-item {
    border: 1px solid var(--color-border);
    border-radius: 6px;
    padding: 15px;
    margin-bottom: 15px;
}

.btn {
    padding: 12px 20px;
    border: none;
    border-radius: 4px;
    font-size: 1em;
    cursor: pointer;
    transition: background-color 0.3s;
    font-family: 'Helvetica', Arial, sans-serif;
    font-weight: bold;
}

.btn-remove {
    background-color: #A00;
    color: white;
    padding: 5px 10px;
    font-size: 0.85em;
}

.btn-remove:hover {
    background-color: #F00;
}

.btn-primary {
    background-color: var(--color-text-white);
    color: var(--color-primary-dark);
    width: 100%;
    margin-top: 10px;
}

.btn-primary:hover {
    background-color: #DDD;
}

.btn-secondary {
    background-color: transparent;
    border: 1px solid var(--color-text-white);
    color: var(--color-text-white);
    margin-top: 10px;
}

/* --- CHECKLIST --- */
.checklist-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 10px;
}

.checklist-item {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    font-size: 0.9em;
}

/* --- RESUMEN DE COSTOS --- */
.cost-summary-box {
    background-color: rgba(255, 255, 255, 0.05);
    border-radius: 6px;
    padding: 20px;
}

.cost-summary-box p {
    display: flex;
    justify-content: space-between;
    margin: 5px 0;
}

.total-display {
    border-top: 1px solid var(--color-border);
    margin-top: 15px;
    padding-top: 15px;
    text-align: right;
}

.total-display p {
    font-size: 1.8em;
    margin: 0;
    font-family: 'Cinzel', serif;
}

/* --- FIRMAS --- */
.signature-pad-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: 30px;
}

@media (min-width: 768px) {
    .signature-pad-container {
        grid-template-columns: 1fr 1fr;
    }
}

.signature-item {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.signature-item h3 {
    font-family: 'Cinzel', serif;
    font-size: 1em;
    margin-bottom: 10px;
    color: #CCC;
}

.signature-item canvas {
    background-color: #E0E0E0;
    border-radius: 4px;
    cursor: crosshair;
    width: 100%;
    max-width: 300px;
    margin-bottom: 15px;
}

.signature-item .btn-secondary {
    width: auto;
    margin-top: 0;
    padding: 8px 16px;
    font-size: 0.9em;
}

/* --- FOOTER --- */
.actions-section {
    text-align: center;
    margin-top: 20px;
}

.btn-pdf-main {
    font-family: 'Cinzel', serif;
    font-size: 1.2em;
    padding: 15px 40px;
    background-color: var(--color-text-white);
    color: var(--color-primary-dark);
}

/* --- RESPONSIVO PARA CABECERA --- */
.top-bar-responsive {
    display: flex;
    justify-content: space-between;
    align-items: center;
    /* Esto asegura que el botón y el logo estén centrados verticalmente entre sí */
    padding-top: 15px;
    margin-bottom: 10px;
}

.logo-flotante {
    width: 60px;
    height: auto;
}

.btn-tema {
    text-decoration: none;
    border: 1px solid var(--color-border);
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 0.9em;
    font-weight: bold;
    height: fit-content;
    /* Asegura que el botón no se estire raro */
}

.app-header {
    padding-top: 10px;
}

.app-header h1 {
    font-size: 1.6em;
}

/* --- CUANDO LA PANTALLA ES GRANDE (COMPUTADORA) --- */
@media (min-width: 768px) {
    .top-bar-responsive {
        /* Dejamos que sea flexbox para mantener la alineación vertical, pero lo sacamos del flujo normal */
        position: absolute;
        top: 60px;
        /* Bajamos toda la barra (logo y botón) al nivel del texto */
        left: 0;
        right: 0;
        padding: 0 20px;
        /* Mantenemos márgenes laterales */
        display: flex;
        justify-content: space-between;
        align-items: center;
        z-index: 10;
        /* Nos aseguramos de que quede por encima de otros elementos */
    }

    .logo-flotante {
        position: relative;
        /* Quitamos absolute para que respete el flexbox */
        top: auto;
        left: auto;
        width: 80px;
    }

    .btn-tema {
        position: relative;
        /* Quitamos absolute para que respete el flexbox */
        top: auto;
        right: auto;
    }

    .app-header {
        padding-top: 60px;
    }

    .app-header h1 {
        font-size: 2.5em;
    }
}