:root {
    /* ========================================
  PALETA DE COLORES GLOBAL / GLOBAL COLOR PALETTE
  ========================================
  */
    --color-black: #343435;
    --color-white: #D2D3D5;
    --color-red: #ED3237;

    /* Variaciones */
    --color-black-light: #404041;
    --color-black-dark: #2a2a2b;
    --color-red-hover: #c41e23;
    --color-white-bright: #f8fafc;

    /* ========================================
  ASIGNACIÓN SEMÁNTICA
  ========================================
  */
    --bg-color: var(--color-white);
    --card-bg: rgba(255, 255, 255, 0.7);
    --text-primary: var(--color-black);
    --text-secondary: #555555;
    --accent-color: var(--color-red);
    --accent-hover: var(--color-red-hover);
    --border-color: rgba(52, 52, 53, 0.1);

    /* ========================================
  TIPOGRAFÍA
  ========================================
  */
    --font-display: 'Outfit', sans-serif;
    --font-header: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;

    /* Tamaños */
    --size-display: 3.5rem;
    --size-h1: 2.5rem;
    --size-h2: 1.5rem;
    --size-body: 1rem;
    --size-small: 0.875rem;
    --size-detail: 0.8rem;

    /* Otros */
    --transition-speed: 0.3s;
    --border-radius: 16px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-body);
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;

    /* FONDO DINÁMICO */
    background-image:
        repeating-linear-gradient(45deg,
            rgba(52, 52, 53, 0.03) 0px,
            rgba(52, 52, 53, 0.03) 1px,
            transparent 1px,
            transparent 60px),
        linear-gradient(135deg, #ffffff 0%, var(--color-white) 100%);
    background-attachment: fixed;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* ========================================
HEADER
========================================
*/
.main-header {
    padding: 4rem 0 2rem;
    text-align: center;
}

.logo-area {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.logo {
    max-height: 90px;
    object-fit: contain;
}

h1 {
    font-family: var(--font-display);
    font-size: var(--size-display);
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.02em;
    background: linear-gradient(to right, var(--color-black), var(--color-black-light));
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.subtitle {
    font-family: var(--font-header);
    color: var(--text-secondary);
    font-size: 1.25rem;
    font-weight: 300;
    letter-spacing: 0.02em;
}

.controls {
    margin: 2rem 0;
    display: flex;
    justify-content: center;
}

.btn-toggle {
    background-color: transparent;
    border: 1px solid var(--accent-color);
    color: var(--accent-color);
    padding: 0.75rem 1.5rem;
    border-radius: 50px;
    font-family: var(--font-header);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-speed) ease;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-size: 0.9rem;
}

.btn-toggle:hover {
    background-color: var(--accent-color);
    color: white;
    box-shadow: 0 5px 15px rgba(237, 50, 55, 0.2);
}

/* ========================================
GRID & LAYOUT (WEB VIEW)
========================================
*/
.catalog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2.5rem;
    padding: 2rem 0 4rem;
}

.loading {
    grid-column: 1 / -1;
    text-align: center;
    font-size: 1.5rem;
    color: var(--text-secondary);
    padding: 4rem;
    font-family: var(--font-header);
}

/* ========================================
PRODUCT CARD (WEB VIEW)
========================================
*/
.product-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    overflow: hidden;
    backdrop-filter: blur(10px);
    transition: transform var(--transition-speed) ease, box-shadow var(--transition-speed) ease, border-color var(--transition-speed) ease;
    display: flex;
    flex-direction: column;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px -5px rgba(0, 0, 0, 0.1);
    border-color: var(--accent-color);
}

.image-container {
    position: relative;
    width: 100%;
    aspect-ratio: 4/3;
    overflow: hidden;
    background: #f1f1f1;
    border-bottom: 1px solid var(--border-color);
}

.product-img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    padding: 1.5rem;
    transition: opacity var(--transition-speed) ease, transform 0.5s ease;
    position: absolute;
    top: 0;
    left: 0;
}

.img-front {
    z-index: 2;
    opacity: 1;
}

.img-lateral {
    z-index: 1;
    opacity: 0;
}

/* Hover effect */
.image-container:hover .img-front {
    opacity: 0;
}

.image-container:hover .img-lateral {
    opacity: 1;
    z-index: 3;
    transform: scale(1.05);
}

.card-content {
    padding: 1.5rem;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.product-title {
    font-family: var(--font-header);
    font-size: var(--size-h2);
    font-weight: 600;
    margin-bottom: 0.25rem;
    color: var(--text-primary);
}

.product-detail {
    font-family: var(--font-body);
    font-size: var(--size-detail);
    color: var(--accent-color);
    font-weight: 600;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.product-desc {
    font-family: var(--font-body);
    font-size: var(--size-body);
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ========================================
SHEET VIEW / VISTA HOJA (PDF)
========================================
*/
.sheet-view-container {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    align-items: center;
    padding-bottom: 4rem;
}

.sheet-page {
    background-color: white;
    color: black;
    width: 100%;
    max-width: 210mm;
    min-height: 297mm;
    padding: 20mm;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    margin-bottom: 2rem;
    position: relative;

    /* PDF Pagination Fixes */
    page-break-after: always !important;
    break-after: page !important;
    display: flex;
    flex-direction: column;
}

.sheet-page:last-child {
    margin-bottom: 0;
    page-break-after: auto !important;
    break-after: auto !important;
}

.sheet-header-main {
    border-bottom: 2px solid var(--color-red);
    padding-bottom: 1rem;
    margin-bottom: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-shrink: 0;
}

.sheet-brand {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    width: 100%;
}

.sheet-logo {
    max-width: 200px;
    max-height: 80px;
    width: auto;
    height: auto;
    object-fit: contain;
}

.sheet-title-block {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    flex-grow: 1;
}

.sheet-title-block h2 {
    font-family: var(--font-display);
    font-size: 1.8rem;
    color: var(--color-black);
    margin: 0;
    line-height: 1;
    text-align: right;
}

.sheet-title-block .page-info {
    font-family: var(--font-body);
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2%;
}

/* Contenido interno de la hoja para PDF */
.sheet-grid {
    display: flex !important;
    flex-wrap: wrap !important;
    justify-content: space-between !important;
    align-content: flex-start !important;
    gap: 2rem 0 !important;
    flex-grow: 1 !important;
}

.sheet-item {
    display: flex !important;
    flex-direction: column !important;
    width: 48% !important;
    margin-bottom: 2rem !important;
    break-inside: avoid !important;
    height: auto !important;
    font-family: var(--font-body);
    font-size: var(--size-body);
    color: var(--text-secondary);
    line-height: 1.6;
    overflow: hidden;
}

.sheet-img {
    width: 48%;
    /* Ajustado según contexto, en el original variaba */
    height: 100%;
    object-fit: contain;
}

.sheet-info h3 {
    font-family: var(--font-header);
    font-size: 1.2rem;
    color: var(--color-black);
    margin-bottom: 0.1rem;
}

.sheet-info .detail {
    font-family: var(--font-body);
    font-size: 0.8rem;
    color: var(--color-red);
    font-weight: bold;
    display: block;
    margin-bottom: 0.5rem;
    text-transform: uppercase;
}

.sheet-info p {
    font-family: var(--font-body);
    font-size: 0.9rem;
    color: #555;
    line-height: 1.4;
}

.sheet-footer-main {
    margin-top: auto;
    border-top: 1px solid #eee;
    padding-top: 1rem;
    text-align: center;
    font-family: var(--font-body);
    font-size: 0.75rem;
    color: var(--text-secondary);
    flex-shrink: 0;
}

/* ========================================
FOOTER (WEB VIEW)
========================================
*/
.main-footer {
    text-align: center;
    padding: 3rem 2rem;
    color: var(--text-secondary);
    border-top: 1px solid var(--border-color);
    margin-top: auto;
    font-family: var(--font-body);
    font-size: var(--size-small);
}

/* ========================================
PDF EXPORT STYLES (Overrides)
========================================
*/
.sheet-view-container.exporting {
    gap: 0 !important;
    padding: 0 !important;
    margin: 0 !important;
    display: block !important;
    font-size: 0 !important;
}

.sheet-view-container.exporting .sheet-footer-main {
    break-inside: avoid !important;
    padding-bottom: 0 !important;
    margin-top: auto !important;
}

.sheet-view-container.exporting .sheet-page {
    font-size: 1rem !important;
    line-height: 1.6 !important;
    display: flex !important;
    flex-direction: column !important;
    /* CORRECCIÓN: Eliminar márgenes y sombras durante la exportación */
    margin: 0 !important;
    box-shadow: none !important;
    border: none !important;
    /* Ajuste de seguridad para evitar desbordamiento por un pixel */
    min-height: auto !important;
}

.sheet-view-container.exporting .sheet-page:last-child {
    page-break-after: avoid !important;
    break-after: avoid !important;
    margin-bottom: 0 !important;
}

/* ========================================
RESPONSIVE
========================================
*/
@media (max-width: 768px) {
    :root {
        --size-display: 2.5rem;
        --size-h1: 2rem;
    }

    .main-header {
        padding: 2rem 0 1rem;
    }

    .catalog-grid {
        grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
        gap: 1.5rem;
    }

    /* Ajustes para sheet view en móvil */
    .sheet-page {
        padding: 10mm;
        width: 95%;
    }
}