/* ==========================================================================
   DISEÑO DE IDENTIDAD VISUAL - DIABETES VISUAL RECETARIO
   ========================================================================== */

:root {
    /* Paleta de Colores Core */
    --primary: #2563EB;
    --primary-dark: #1D4ED8;
    --primary-light: #EFF6FF;
    --teal: #0D9488;
    --teal-light: #E0F2F1;
    --dark-slate: #0F172A;
    --medium-slate: #1E293B;
    --light-slate: #64748B;
    --bg-main: #F8FAFC;
    --bg-card: #FFFFFF;
    --border: #E2E8F0;
    
    /* Colores Semánticos */
    --success: #10B981;
    --success-light: #D1FAE5;
    --whatsapp: #25D366;
    --whatsapp-dark: #128C7E;
    --paypal: #003087;
    --stripe: #635BFF;
    --binance: #F0B90B;
    --warning: #F59E0B;
    --danger: #EF4444;
    
    /* Tipografía */
    --font-heading: 'Outfit', 'Inter', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    /* Sombras y Bordes */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.08), 0 4px 6px -2px rgba(15, 23, 42, 0.04);
    --shadow-xl: 0 20px 25px -5px rgba(15, 23, 42, 0.12), 0 10px 10px -5px rgba(15, 23, 42, 0.04);
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --radius-full: 9999px;
    
    /* Transiciones */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ==========================================================================
   RESET Y ESTILOS GENERALES
   ========================================================================== */

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    background-color: var(--bg-main);
    color: var(--dark-slate);
    font-family: var(--font-body);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    color: var(--dark-slate);
    line-height: 1.25;
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: var(--transition-fast);
}

a:hover {
    color: var(--primary-dark);
}

button {
    cursor: pointer;
    font-family: var(--font-body);
    border: none;
    background: none;
    outline: none;
    transition: all var(--transition-fast);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

.hidden {
    display: none !important;
}

/* ==========================================================================
   COMPONENTES DE BOTÓN
   ========================================================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    font-weight: 600;
    font-size: 0.95rem;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.btn-lg {
    padding: 14px 28px;
    font-size: 1.05rem;
}

.btn-primary {
    background-color: var(--primary);
    color: white;
    box-shadow: 0 4px 14px rgba(37, 99, 235, 0.3);
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(37, 99, 235, 0.4);
    color: white;
}

.btn-secondary {
    background-color: white;
    color: var(--primary);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
    background-color: var(--primary-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* ==========================================================================
   NAVBAR (HEADER STICKY CON GLASSMORPHISM)
   ========================================================================== */

.navbar {
    position: sticky;
    top: 0;
    z-index: 100;
    background-color: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(226, 232, 240, 0.6);
    box-shadow: var(--shadow-sm);
}

.navbar-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 14px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.droplet-svg {
    filter: drop-shadow(0 2px 4px rgba(37, 99, 235, 0.2));
}

.logo-text {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--dark-slate);
    letter-spacing: -0.5px;
}

.accent-text {
    color: var(--primary);
}

.premium-badge-nav {
    display: flex;
    align-items: center;
}

.badge-free {
    background-color: var(--teal-light);
    color: var(--teal);
    font-weight: 600;
    font-size: 0.85rem;
    padding: 6px 12px;
    border-radius: var(--radius-full);
    border: 1px solid rgba(13, 148, 136, 0.2);
}

.badge-premium {
    background-color: #FFFBEB;
    color: #B45309;
    font-weight: 700;
    font-size: 0.85rem;
    padding: 6px 14px;
    border-radius: var(--radius-full);
    border: 1px solid rgba(245, 158, 11, 0.3);
    animation: goldGlow 2s infinite alternate;
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */

.hero {
    position: relative;
    padding: 80px 20px 70px;
    text-align: center;
    background: radial-gradient(circle at top, rgba(239, 246, 255, 0.6) 0%, rgba(248, 250, 252, 0) 70%);
}

.hero-bg-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 600px;
    height: 300px;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.08) 0%, rgba(59, 130, 246, 0) 70%);
    z-index: -1;
    pointer-events: none;
}

.hero-container {
    max-width: 800px;
    margin: 0 auto;
}

.hero-badge {
    display: inline-block;
    margin-bottom: 24px;
}

.hero-badge .badge-content {
    background-color: white;
    border: 1px solid var(--border);
    color: var(--teal);
    font-weight: 600;
    font-size: 0.85rem;
    padding: 6px 16px;
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-sm);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.hero-title {
    font-size: 3rem;
    font-weight: 800;
    letter-spacing: -1px;
    margin-bottom: 20px;
    color: var(--dark-slate);
    line-height: 1.15;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--light-slate);
    margin-bottom: 36px;
    max-width: 650px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.5;
}

.hero-ctas {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

/* ==========================================================================
   ESPACIO DIARIO (CONSEJO Y REFLEXIÓN)
   ========================================================================== */

.daily-space-section {
    padding: 0 20px 50px;
}

.section-container {
    max-width: 1200px;
    margin: 0 auto;
}

.glass-card {
    background: rgba(255, 255, 255, 0.7);
    border: 1px solid rgba(226, 232, 240, 0.8);
    backdrop-filter: blur(8px);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.daily-container {
    padding: 30px;
}

.daily-header {
    text-align: center;
    margin-bottom: 24px;
}

.daily-header h2 {
    font-size: 1.5rem;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: var(--dark-slate);
}

.daily-header h2 i {
    color: var(--primary);
}

.daily-meta {
    font-size: 0.9rem;
    color: var(--light-slate);
    margin-top: 4px;
}

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

.daily-card {
    display: flex;
    gap: 20px;
    background-color: white;
    padding: 20px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.daily-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.daily-card .card-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
}

.advice-card .card-icon {
    background-color: #FEF3C7;
    color: var(--warning);
}

.reflection-card .card-icon {
    background-color: var(--primary-light);
    color: var(--primary);
}

.daily-card .card-body h3 {
    font-size: 1.1rem;
    margin-bottom: 6px;
    color: var(--dark-slate);
}

.daily-card .card-body p {
    font-size: 0.95rem;
    color: var(--medium-slate);
    line-height: 1.45;
}

/* ==========================================================================
   RECETARIO SECTION - CONTROLES Y BUSCADOR
   ========================================================================== */

.recetario-section {
    padding: 40px 20px 60px;
    background-color: white;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.section-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 36px;
}

.section-header h2 {
    font-size: 2.2rem;
    margin-bottom: 10px;
}

.section-header p {
    color: var(--light-slate);
    font-size: 1.05rem;
}

.controls-container {
    max-width: 900px;
    margin: 0 auto 24px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.search-box {
    position: relative;
    display: flex;
    align-items: center;
    background-color: var(--bg-main);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 6px 16px;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-fast);
}

.search-box:focus-within {
    border-color: var(--primary);
    background-color: white;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.search-icon {
    color: var(--light-slate);
    font-size: 1.1rem;
    margin-right: 12px;
}

.search-box input {
    width: 100%;
    padding: 10px 0;
    border: none;
    background: transparent;
    outline: none;
    font-family: var(--font-body);
    font-size: 1.05rem;
    color: var(--dark-slate);
}

.search-box input::placeholder {
    color: var(--light-slate);
}

.clear-search-btn {
    color: var(--light-slate);
    font-size: 1.2rem;
    padding: 4px;
}

.clear-search-btn:hover {
    color: var(--dark-slate);
}

.filter-chips {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    justify-content: center;
}

.chip {
    padding: 8px 18px;
    font-size: 0.9rem;
    font-weight: 500;
    border-radius: var(--radius-full);
    border: 1px solid var(--border);
    background-color: white;
    color: var(--medium-slate);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.chip:hover {
    background-color: var(--bg-main);
    border-color: var(--light-slate);
}

.chip.active {
    background-color: var(--primary);
    color: white;
    border-color: var(--primary);
    box-shadow: 0 4px 10px rgba(37, 99, 235, 0.2);
}

.recetario-info-bar {
    max-width: 900px;
    margin: 0 auto 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.88rem;
    flex-wrap: wrap;
    gap: 10px;
}

.results-count {
    color: var(--light-slate);
    font-weight: 500;
}

.demo-warning {
    background-color: #FEF3C7;
    color: #92400E;
    padding: 6px 14px;
    border-radius: var(--radius-sm);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    border: 1px solid rgba(245, 158, 11, 0.2);
    font-weight: 500;
}

.unlock-inline-link {
    color: var(--primary-dark);
    font-weight: 700;
    text-decoration: underline;
}

/* ==========================================================================
   RECETARIO GRID Y TARJETAS (CARDS)
   ========================================================================== */

.recipes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
    gap: 24px;
    margin-top: 10px;
}

.recipe-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    height: 100%;
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.recipe-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
}

.card-img-wrapper {
    position: relative;
    width: 100%;
    padding-top: 60%; /* Aspect ratio 5:3 */
    background-color: #E2E8F0;
    overflow: hidden;
}

.card-img-wrapper img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-normal);
}

.recipe-card:hover .card-img-wrapper img {
    transform: scale(1.06);
}

/* Estilo para las tarjetas bloqueadas */
.recipe-card.premium-locked .card-img-wrapper img {
    filter: blur(10px);
}

.lock-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(15, 23, 42, 0.45);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: white;
    gap: 8px;
    z-index: 2;
}

.lock-icon-circle {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-full);
    background-color: rgba(255, 255, 255, 0.95);
    color: var(--dark-slate);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    box-shadow: var(--shadow-md);
    animation: lockPulse 2s infinite;
}

.lock-overlay span {
    font-weight: 700;
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.premium-ribbon {
    position: absolute;
    top: 12px;
    left: 12px;
    background-color: var(--warning);
    color: var(--dark-slate);
    font-weight: 800;
    font-size: 0.75rem;
    padding: 4px 10px;
    border-radius: var(--radius-sm);
    z-index: 3;
    display: flex;
    align-items: center;
    gap: 4px;
    box-shadow: var(--shadow-sm);
}

.card-content {
    padding: 20px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.recipe-tag {
    font-size: 0.78rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--primary);
    margin-bottom: 6px;
}

.recipe-card.premium-locked .recipe-tag {
    color: var(--warning);
}

.recipe-card-title {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--dark-slate);
    margin-bottom: 10px;
    line-height: 1.3;
}

.benefits-brief {
    font-size: 0.88rem;
    color: var(--light-slate);
    margin-bottom: 18px;
    flex-grow: 1;
}

.benefits-brief p {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.card-btn {
    width: 100%;
    padding: 10px;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 600;
    text-align: center;
    border: 1px solid var(--border);
    transition: all var(--transition-fast);
}

.recipe-card:not(.premium-locked) .card-btn {
    background-color: var(--primary-light);
    color: var(--primary);
    border-color: transparent;
}

.recipe-card:not(.premium-locked) .card-btn:hover {
    background-color: var(--primary);
    color: white;
}

.recipe-card.premium-locked .card-btn {
    background-color: white;
    color: var(--warning);
    border-color: rgba(245, 158, 11, 0.4);
}

.recipe-card.premium-locked .card-btn:hover {
    background-color: #FFFBEB;
    border-color: var(--warning);
}

/* Spinner de carga */
.loading-state {
    grid-column: 1 / -1;
    text-align: center;
    padding: 60px 20px;
    color: var(--light-slate);
}

.spinner {
    width: 48px;
    height: 48px;
    border: 4px solid var(--border);
    border-top-color: var(--primary);
    border-radius: var(--radius-full);
    margin: 0 auto 16px;
    animation: spin 1s infinite linear;
}

/* ==========================================================================
   CARACTERÍSTICAS PREMIUM
   ========================================================================== */

.premium-features-section {
    padding: 60px 20px;
    background-color: var(--bg-main);
    border-bottom: 1px solid var(--border);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 24px;
}

.feature-card {
    background-color: white;
    padding: 24px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-fast);
}

.feature-card:hover {
    transform: translateY(-2px);
}

.feature-icon {
    width: 50px;
    height: 50px;
    border-radius: var(--radius-sm);
    background-color: var(--primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    margin-bottom: 16px;
}

.feature-icon.text-blue {
    color: var(--primary);
}

.feature-card h3 {
    font-size: 1.15rem;
    margin-bottom: 8px;
}

.feature-card p {
    font-size: 0.92rem;
    color: var(--light-slate);
    line-height: 1.45;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */

footer {
    background-color: var(--dark-slate);
    color: #94A3B8;
    padding: 48px 20px;
}

.footer-container {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

.footer-logo {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
    color: white;
    margin-bottom: 16px;
}

.footer-disclaimer {
    font-size: 0.8rem;
    line-height: 1.6;
    margin-bottom: 24px;
    color: #64748B;
    border-top: 1px solid #1E293B;
    border-bottom: 1px solid #1E293B;
    padding: 16px 0;
}

.footer-copy {
    font-size: 0.8rem;
}

/* ==========================================================================
   MODALES (ESTRUCTURA Y COMPORTAMIENTO)
   ========================================================================== */

.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-fast);
}

.modal.active {
    opacity: 1;
    pointer-events: auto;
}

.modal-backdrop {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(15, 23, 42, 0.45);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
}

.modal-wrapper {
    position: relative;
    width: 90%;
    max-width: 700px;
    max-height: 90vh;
    background-color: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    transform: scale(0.95);
    transition: transform var(--transition-normal);
}

.modal.active .modal-wrapper {
    transform: scale(1);
}

.modal-content {
    overflow-y: auto;
    max-height: 90vh;
    padding: 30px;
}

.modal-close {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    background-color: var(--bg-main);
    color: var(--light-slate);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    z-index: 10;
}

.modal-close:hover {
    background-color: var(--border);
    color: var(--dark-slate);
}

/* ==========================================================================
   MODAL DETALLE DE RECETA
   ========================================================================== */

.recipe-detail-modal {
    padding-top: 40px;
}

.detail-img-wrapper {
    width: 100%;
    height: 240px;
    border-radius: var(--radius-md);
    overflow: hidden;
    margin-bottom: 20px;
    background-color: var(--border);
}

.detail-img-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.detail-tag {
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--primary);
    margin-bottom: 4px;
}

.detail-title {
    font-size: 1.8rem;
    margin-bottom: 16px;
}

.detail-section-title {
    font-size: 1.15rem;
    border-bottom: 2px solid var(--border);
    padding-bottom: 6px;
    margin: 24px 0 12px;
    color: var(--dark-slate);
}

/* Ingredientes */
.ingredients-list {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 8px;
}

.ingredients-list li {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.95rem;
    padding: 4px 0;
}

/* Pasos */
.steps-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.steps-list li {
    display: flex;
    gap: 12px;
    font-size: 0.95rem;
}

.steps-list li .step-emoji {
    font-size: 1.1rem;
    flex-shrink: 0;
    margin-top: 2px;
}

/* Beneficios */
.benefits-container {
    background-color: var(--teal-light);
    border-radius: var(--radius-md);
    padding: 16px;
    border: 1px solid rgba(13, 148, 136, 0.15);
}

.benefits-container ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.benefits-container ul li {
    font-size: 0.92rem;
    color: #0F766E;
    font-weight: 500;
}

/* ==========================================================================
   MODAL DE CHECKOUT / VENTAS
   ========================================================================== */

.checkout-modal {
    padding: 24px;
}

.checkout-header {
    text-align: center;
    margin-bottom: 20px;
}

.crown-icon {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-full);
    background-color: #FEF3C7;
    color: var(--warning);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    margin: 0 auto 12px;
    animation: goldGlow 2s infinite alternate;
}

.checkout-header h2 {
    font-size: 1.6rem;
    margin-bottom: 4px;
}

.checkout-header .subtitle {
    color: var(--light-slate);
    font-size: 0.95rem;
    margin-bottom: 14px;
}

.price-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin-bottom: 12px;
}

.old-price {
    font-size: 1.1rem;
    color: var(--light-slate);
    text-decoration: line-through;
}

.current-price {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--success);
}

.current-price .period {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--light-slate);
}

.promo-badge {
    background-color: var(--danger);
    color: white;
    font-weight: 700;
    font-size: 0.72rem;
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    text-transform: uppercase;
}

.support-text {
    font-size: 0.88rem;
    color: var(--light-slate);
    max-width: 480px;
    margin: 0 auto;
}

/* Pestañas de Pago */
.payment-tabs-headers {
    display: flex;
    border-bottom: 1px solid var(--border);
    margin-bottom: 18px;
    overflow-x: auto;
    scrollbar-width: none; /* Firefox */
}

.payment-tabs-headers::-webkit-scrollbar {
    display: none; /* Safari/Chrome */
}

.tab-btn {
    flex-shrink: 0;
    padding: 10px 14px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--light-slate);
    border-bottom: 2px solid transparent;
    display: flex;
    align-items: center;
    gap: 6px;
}

.tab-btn:hover {
    color: var(--dark-slate);
}

.tab-btn.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

.tab-pane {
    display: none;
}

.tab-pane.active {
    display: block;
}

.pane-desc {
    font-size: 0.88rem;
    color: var(--light-slate);
    margin-bottom: 16px;
    text-align: center;
}

/* Botones de Pago */
.checkout-buttons {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.pay-btn {
    width: 100%;
    padding: 14px;
    border-radius: var(--radius-md);
    font-weight: 700;
    font-size: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-sm);
    color: white;
}

.pay-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    color: white;
}

.stripe-btn {
    background-color: var(--stripe);
}

.stripe-btn:hover {
    background-color: #554dec;
}

.paypal-btn {
    background-color: var(--paypal);
}

.paypal-btn:hover {
    background-color: #00246b;
}

.secure-badge {
    text-align: center;
    font-size: 0.75rem;
    color: var(--light-slate);
    margin-top: 14px;
}

.secure-badge i {
    color: var(--success);
}

/* Web3 / MetaMask panel */
.web3-container {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.web3-status {
    background-color: var(--bg-main);
    border: 1px solid var(--border);
    padding: 10px;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-weight: 500;
}

.web3-btn {
    background-color: #E67E22; /* Color MetaMask */
}

.web3-btn:hover {
    background-color: #D35400;
}

.web3-pay-btn {
    background-color: var(--primary);
}

/* ==========================================================================
   MÉTODO DE PAGO ÚNICO - DISEÑO PREMIUM
   ========================================================================== */

.payment-single-method {
    margin-top: 20px;
}

.payment-highlight-box {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: var(--radius-lg);
    padding: 24px;
    text-align: center;
    color: white;
    margin-bottom: 20px;
    box-shadow: 0 8px 20px rgba(102, 126, 234, 0.3);
}

.payment-icon-large {
    font-size: 3rem;
    margin-bottom: 12px;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}

.payment-title {
    font-size: 1.4rem;
    font-weight: 800;
    margin-bottom: 6px;
    color: white;
}

.payment-subtitle {
    font-size: 0.9rem;
    opacity: 0.95;
    margin-bottom: 16px;
    color: white;
}

.payment-price {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.price-amount {
    font-size: 2.5rem;
    font-weight: 800;
    color: #FFD700;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.price-period {
    font-size: 0.85rem;
    opacity: 0.9;
    color: white;
}

.premium-btn {
    background: linear-gradient(135deg, #FFD700 0%, #FFA500 100%);
    color: #1a1a2e;
    font-weight: 800;
    font-size: 1.5rem;
    padding: 24px;
    border-radius: var(--radius-md);
    box-shadow: 0 6px 25px rgba(255, 215, 0, 0.5);
    transition: all var(--transition-normal);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.premium-btn:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 6px 20px rgba(255, 215, 0, 0.5);
    color: #1a1a2e;
}

.payment-features {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin: 20px 0;
    padding: 16px;
    background-color: var(--primary-light);
    border-radius: var(--radius-md);
    border: 1px solid rgba(37, 99, 235, 0.1);
}

.recurrence-justification {
    font-size: 0.85rem;
    color: var(--primary);
    font-weight: 600;
    background-color: rgba(37, 99, 235, 0.08);
    padding: 10px 14px;
    border-radius: var(--radius-md);
    margin-top: 12px;
    text-align: center;
    border: 1px solid rgba(37, 99, 235, 0.15);
}

.payment-instructions {
    background-color: rgba(34, 197, 94, 0.08);
    border: 1px solid rgba(34, 197, 94, 0.2);
    border-radius: var(--radius-md);
    padding: 16px;
    margin: 20px 0;
}

.instruction-title {
    font-weight: 700;
    color: var(--success);
    margin-bottom: 10px;
    font-size: 0.95rem;
}

.instruction-list {
    margin: 0;
    padding-left: 20px;
    color: var(--medium-slate);
    font-size: 0.85rem;
}

.instruction-list li {
    margin-bottom: 8px;
    line-height: 1.4;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.9rem;
    color: var(--medium-slate);
}

.feature-item i {
    color: var(--success);
    font-size: 1.1rem;
}

.text-link-container {
    text-align: center;
    margin: 16px 0;
}

.text-link-premium {
    color: var(--primary);
    font-weight: 700;
    font-size: 1.1rem;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    border-radius: var(--radius-full);
    background-color: var(--primary-light);
    transition: all var(--transition-fast);
}

.text-link-premium:hover {
    background-color: var(--primary);
    color: white;
    transform: translateX(4px);
}

.web3-manual-addresses {
    border-top: 1px dashed var(--border);
    padding-top: 12px;
}

.manual-title {
    font-size: 0.82rem;
    font-weight: 700;
    color: var(--medium-slate);
    margin-bottom: 8px;
}

.address-copy-box {
    margin-bottom: 8px;
}

.address-copy-box .label {
    display: block;
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--light-slate);
    margin-bottom: 2px;
}

.copy-input {
    display: flex;
}

.copy-input input {
    flex-grow: 1;
    background-color: var(--bg-main);
    border: 1px solid var(--border);
    border-right: none;
    border-radius: var(--radius-sm) 0 0 var(--radius-sm);
    padding: 6px 10px;
    font-size: 0.78rem;
    font-family: monospace;
    color: var(--medium-slate);
    outline: none;
}

.copy-input button {
    background-color: var(--border);
    color: var(--medium-slate);
    padding: 0 12px;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    font-size: 0.85rem;
}

.copy-input button:hover {
    background-color: var(--light-slate);
    color: white;
}

.notify-btn {
    width: 100%;
    padding: 12px;
    background-color: var(--whatsapp);
    color: white;
    font-weight: 700;
    border-radius: var(--radius-md);
    text-align: center;
    display: block;
    box-shadow: var(--shadow-sm);
    margin-top: 10px;
}

.notify-btn:hover {
    background-color: var(--whatsapp-dark);
    transform: translateY(-2px);
    color: white;
}

/* Binance panel */
.binance-container {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.binance-details {
    display: flex;
    gap: 16px;
    background-color: #FFFDF5;
    border: 1px solid rgba(240, 185, 11, 0.2);
    padding: 14px;
    border-radius: var(--radius-md);
    align-items: center;
}

.binance-qr-box {
    width: 80px;
    height: 80px;
    background-color: white;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.qr-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    font-size: 0.62rem;
    color: var(--light-slate);
    gap: 4px;
}

.qr-placeholder i {
    font-size: 1.4rem;
    color: var(--dark-slate);
}

.binance-info {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.info-item {
    font-size: 0.85rem;
}

.info-item .label {
    font-size: 0.72rem;
    color: var(--light-slate);
    display: block;
}

.info-item .value {
    font-weight: 700;
    color: var(--dark-slate);
}

.copy-small-btn {
    color: var(--light-slate);
    padding: 2px 4px;
    font-size: 0.8rem;
}

.copy-small-btn:hover {
    color: var(--dark-slate);
}

/* Bank panel */
.bank-container {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.bank-details-card {
    background-color: var(--bg-main);
    border: 1px solid var(--border);
    padding: 16px;
    border-radius: var(--radius-md);
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.bank-row {
    display: flex;
    justify-content: space-between;
    font-size: 0.88rem;
    border-bottom: 1px solid rgba(226, 232, 240, 0.5);
    padding-bottom: 4px;
}

.bank-row:last-child {
    border: none;
    padding: 0;
}

.bank-row .label {
    color: var(--light-slate);
}

.bank-row .value {
    font-weight: 600;
    color: var(--dark-slate);
    text-align: right;
}

.checkout-footer {
    border-top: 1px solid var(--border);
    margin-top: 18px;
    padding-top: 14px;
    text-align: center;
    font-size: 0.78rem;
    color: var(--light-slate);
}

.checkout-footer a {
    font-weight: 700;
    text-decoration: underline;
}

/* ==========================================================================
   TOAST NOTIFICATION (NOTIFICACIÓN FLOTANTE)
   ========================================================================== */

.toast-notification {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 2000;
    max-width: 350px;
    background-color: white;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-xl);
    border-left: 4px solid var(--success);
    transform: translateY(120%);
    transition: transform var(--transition-normal);
}

.toast-notification.active {
    transform: translateY(0);
}

.toast-content {
    padding: 16px;
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.toast-icon {
    font-size: 1.4rem;
    color: var(--success);
    margin-top: 2px;
}

.toast-body h4 {
    font-size: 0.95rem;
    margin-bottom: 2px;
}

.toast-body p {
    font-size: 0.82rem;
    color: var(--light-slate);
}

.toast-close {
    color: var(--light-slate);
    font-size: 0.95rem;
    align-self: flex-start;
    margin-left: auto;
}

/* ==========================================================================
   KEYFRAMES / ANIMACIONES
   ========================================================================== */

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

@keyframes goldGlow {
    from {
        box-shadow: 0 0 4px rgba(245, 158, 11, 0.2);
    }
    to {
        box-shadow: 0 0 12px rgba(245, 158, 11, 0.4);
    }
}

@keyframes lockPulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

/* ==========================================================================
   DISEÑO RESPONSIVO (RESPONSIVE MEDIA QUERIES)
   ========================================================================== */

@media (max-width: 768px) {
    .hero-title {
        font-size: 2.2rem;
    }
    
    .hero-subtitle {
        font-size: 1.05rem;
    }
    
    .daily-grid {
        grid-template-columns: 1fr;
    }
    
    .section-header h2 {
        font-size: 1.8rem;
    }
    
    .recetario-info-bar {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .demo-warning {
        width: 100%;
    }
    
    .modal-content {
        padding: 20px;
    }
    
    .ingredients-list {
        grid-template-columns: 1fr;
    }
    
    .payment-tabs-headers {
        gap: 2px;
    }
    
    .tab-btn {
        padding: 8px 10px;
        font-size: 0.8rem;
    }
}

@media (max-width: 480px) {
    .hero-ctas {
        flex-direction: column;
        width: 100%;
        max-width: 320px;
        margin: 0 auto;
    }
    
    .hero-ctas .btn {
        width: 100%;
    }
}

/* ==========================================================================
   MEJORAS DE DETALLE DE RECETA INTERACTIVA
   ========================================================================== */

.fact-sheet-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 20px;
}

.fact-capsule {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background-color: var(--primary-light);
    color: var(--primary);
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 600;
    border: 1px solid rgba(37, 99, 235, 0.1);
}

.fact-capsule i {
    font-size: 0.95rem;
}

/* Checkbox interactivo de ingredientes */
.ingredient-check-label {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    width: 100%;
    padding: 6px 8px;
    border-radius: var(--radius-sm);
    transition: background var(--transition-fast);
}

.ingredient-check-label:hover {
    background-color: var(--bg-main);
}

.ingredient-checkbox {
    position: absolute;
    opacity: 0;
    cursor: pointer;
    height: 0;
    width: 0;
}

.checkbox-custom {
    position: relative;
    height: 20px;
    width: 20px;
    background-color: white;
    border: 2px solid var(--border);
    border-radius: 5px;
    flex-shrink: 0;
    transition: all var(--transition-fast);
}

.ingredient-checkbox:checked ~ .checkbox-custom {
    background-color: var(--success);
    border-color: var(--success);
}

.checkbox-custom::after {
    content: "";
    position: absolute;
    display: none;
    left: 6px;
    top: 2px;
    width: 5px;
    height: 10px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

.ingredient-checkbox:checked ~ .checkbox-custom::after {
    display: block;
}

.ingredient-checkbox:checked ~ .ingredient-text {
    text-decoration: line-through;
    color: var(--light-slate);
    opacity: 0.75;
}

/* Pasos interactivos (Cook-along tracking) */
.steps-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.step-item {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    background-color: white;
    border: 1px solid var(--border);
    padding: 14px 16px;
    border-radius: var(--radius-md);
    cursor: pointer;
    position: relative;
    transition: all var(--transition-fast);
}

.step-item:hover {
    border-color: var(--primary);
    background-color: var(--primary-light);
    transform: translateX(4px);
}

.step-number-badge {
    width: 26px;
    height: 26px;
    border-radius: var(--radius-full);
    background-color: var(--primary);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    font-weight: 700;
    flex-shrink: 0;
}

.step-content-wrapper {
    flex-grow: 1;
    display: flex;
    align-items: flex-start;
    gap: 8px;
}

.step-emoji-badge {
    font-size: 1.15rem;
    flex-shrink: 0;
}

.step-text {
    font-size: 0.95rem;
    color: var(--dark-slate);
    line-height: 1.5;
}

.step-check-mark {
    opacity: 0;
    color: var(--success);
    font-size: 1.1rem;
    flex-shrink: 0;
    align-self: center;
    transition: opacity var(--transition-fast);
}

/* Estilo para paso completado */
.step-item.completed {
    background-color: var(--bg-main);
    border-color: var(--border);
    opacity: 0.65;
}

.step-item.completed .step-number-badge {
    background-color: var(--light-slate);
}

.step-item.completed .step-text {
    text-decoration: line-through;
    color: var(--light-slate);
}

.step-item.completed .step-check-mark {
    opacity: 1;
}

/* Caja de consejo médico */
.medical-tip-box {
    margin-top: 24px;
    background-color: rgba(13, 148, 136, 0.05);
    border: 1px solid rgba(13, 148, 136, 0.15);
    border-radius: var(--radius-md);
    padding: 16px;
    display: flex;
    gap: 14px;
    align-items: flex-start;
}

.medical-tip-box .tip-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    background-color: var(--teal-light);
    color: var(--teal);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.medical-tip-box .tip-body h4 {
    font-size: 0.98rem;
    font-weight: 700;
    color: #0F766E;
    margin-bottom: 4px;
}

.medical-tip-box .tip-body p {
    font-size: 0.88rem;
    color: #115E59;
    line-height: 1.5;
}

/* Información Nutricional Grid */
.nutrition-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 10px;
    margin-bottom: 20px;
}

.nutrition-card {
    background-color: var(--bg-main);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 10px 6px;
    text-align: center;
    display: flex;
    flex-direction: column;
    gap: 4px;
    transition: all var(--transition-fast);
}

.nutrition-card:hover {
    border-color: var(--primary);
    background-color: var(--primary-light);
    transform: translateY(-2px);
}

.nutrition-card .value {
    font-size: 0.95rem;
    font-weight: 800;
    color: var(--dark-slate);
    font-family: var(--font-heading);
}

.nutrition-card .label {
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--light-slate);
    text-transform: uppercase;
}

@media (max-width: 576px) {
    .nutrition-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Sección de código de activación */
.activation-code-container {
    background-color: var(--primary-light);
    border: 1px solid rgba(37, 99, 235, 0.15);
    border-radius: var(--radius-md);
    padding: 16px;
    margin-top: 20px;
    text-align: center;
}

.activation-title {
    font-size: 0.88rem;
    font-weight: 700;
    color: var(--primary-dark);
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
}

.activation-input-group {
    display: flex;
    gap: 8px;
    max-width: 320px;
    margin: 0 auto;
}

.activation-input-group input {
    flex-grow: 1;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 8px 12px;
    font-size: 0.88rem;
    text-transform: uppercase;
    text-align: center;
    font-family: monospace;
    font-weight: 700;
    outline: none;
}

.activation-input-group input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.btn-activate {
    background-color: var(--primary);
    color: white;
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-weight: 700;
    font-size: 0.88rem;
    border: none;
    cursor: pointer;
    transition: background-color var(--transition-fast);
}

.btn-activate:hover {
    background-color: var(--primary-dark);
}

.activation-feedback {
    font-size: 0.78rem;
    margin-top: 8px;
    font-weight: 600;
    display: none;
}

.activation-feedback.success {
    color: var(--success);
    display: block;
}

.activation-feedback.error {
    color: var(--danger);
    display: block;
}