/* 
   Design System: Cultivo Digital - "The Digital Greenhouse"
   Aesthetics: Premium, Organic, Tech-forward, Editorial
*/

:root {
    /* Colors - HSL for flex */
    --primary-h: 161;
    --primary-s: 100%;
    --primary-l: 20%;
    --primary: hsl(var(--primary-h), var(--primary-s), var(--primary-l));
    --primary-container: hsl(162, 100%, 26%);
    
    --surface: hsl(210, 25%, 98%);
    --surface-container-low: hsl(210, 20%, 96%);
    --surface-container-lowest: hsl(0, 0%, 100%);
    --on-surface: hsl(200, 9%, 11%);
    --on-surface-variant: hsl(150, 10%, 26%);
    
    --secondary-fixed: hsl(228, 100%, 93%);
    --on-secondary-fixed-variant: hsl(228, 48%, 33%);
    
    --outline-variant: hsla(140, 10%, 78%, 0.15);

    /* Typography */
    --font-heading: 'Manrope', system-ui, -apple-system, sans-serif;
    --font-body: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;

    /* Spacing */
    --space-base: 1rem;
    --section-padding: 6rem 2rem;
}

/* Reset & Base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

body {
    background-color: var(--surface);
    color: var(--on-surface);
    font-family: var(--font-body);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
    font-family: var(--font-heading);
    color: var(--on-surface);
    line-height: 1.1;
    letter-spacing: -0.02em;
}

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

section {
    padding: var(--section-padding);
}

/* Transitions & Micro-animations */
.hover-lift {
    transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.hover-lift:hover {
    transform: translateY(-4px);
}

.active-scale {
    transition: transform 0.1s ease;
}
.active-scale:active {
    transform: scale(0.96);
}

/* Components */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 2rem;
    border-radius: 0.75rem;
    font-weight: 700;
    font-family: var(--font-body);
    cursor: pointer;
    border: none;
    transition: all 0.3s ease;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-container));
    color: white;
    box-shadow: 0 10px 30px -10px hsla(var(--primary-h), var(--primary-s), var(--primary-l), 0.3);
}

.btn-secondary {
    background: var(--surface-container-low);
    color: var(--on-surface);
}

.glass {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

/* Sectional Transitions (No-Line Rule) */
.surface-low { background-color: var(--surface-container-low); }
.surface-lowest { background-color: var(--surface-container-lowest); }

/* Icons */
.material-symbols-outlined {
    font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 24;
}

/* WhatsApp FAB */
.whatsapp-fab {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    z-index: 100;
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background-color: #25D366;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    box-shadow: 0 10px 40px rgba(37, 211, 102, 0.4);
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {transform: translateY(0);}
    40% {transform: translateY(-10px);}
    60% {transform: translateY(-5px);}
}

/* Form Styles - "Soft Entry" philosophy */
.form-group {
    margin-bottom: 2rem;
    position: relative;
}

.form-label {
    display: block;
    font-size: 0.85rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    color: var(--on-surface-variant);
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.input-field {
    width: 100%;
    padding: 1.25rem;
    border-radius: 1rem;
    background: var(--surface-container-low);
    border: 2px solid transparent;
    font-family: var(--font-body);
    font-size: 1rem;
    color: var(--on-surface);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.input-field:focus {
    outline: none;
    background: var(--surface-container-lowest);
    border-color: hsla(var(--primary-h), var(--primary-s), var(--primary-l), 0.15);
    box-shadow: 0 10px 30px -10px hsla(var(--primary-h), var(--primary-s), var(--primary-l), 0.1);
    transform: translateY(-2px);
}

textarea.input-field {
    min-height: 150px;
    resize: none;
}

/* Success State Utility */
.form-success-overlay {
    display: none;
    position: absolute;
    inset: 0;
    background: var(--surface-container-lowest);
    z-index: 10;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    border-radius: 2rem;
    animation: fadeIn 0.5s ease forwards;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Button Loading State */
.btn-loading {
    position: relative;
    color: transparent !important;
    pointer-events: none;
}

.btn-loading::after {
    content: "";
    position: absolute;
    width: 24px;
    height: 24px;
    border: 3px solid rgba(255,255,255,0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* Responsive Adjustments */
@media (max-width: 968px) {
    .container {
        padding: 0 1.5rem;
    }
    
    h1 {
        font-size: 2.8rem !important;
        line-height: 1.2 !important;
    }

    h2 {
        font-size: 2.2rem !important;
    }

    /* Layout Stacking */
    #hero .container,
    #nosotros .container,
    #contacto .container,
    #testimonios .container {
        grid-template-columns: 1fr !important;
        gap: 3rem !important;
        text-align: center;
    }

    /* Section Specific Adjustments */
    .hero-content {
        padding-top: 4rem;
        display: flex;
        flex-direction: column;
        align-items: center;
    }

    .hero-image div { transform: none !important; }
    .glass { position: static !important; margin: 0 auto !important; transform: none !important; margin-top: 2rem !important; }

    /* Logos (Social Proof) */
    div[style*="display: flex; justify-content: center; align-items: center; opacity: 0.5;"] {
        gap: 2rem !important;
    }

    img[style*="height: 120px"] {
        height: 70px !important;
    }

    /* Manicure Banner */
    section img[style*="height: 500px"] {
        height: 300px !important;
    }

    /* Contact Form & Info */
    #contacto div[style*="display: flex; gap: 1.5rem; align-items: center"] {
        justify-content: center;
    }

    .surface-lowest {
        padding: 2rem 1.5rem !important;
    }

    /* Footer */
    footer .container {
        flex-direction: column;
        gap: 2.5rem;
        text-align: center;
    }

    footer .container > div[style*="display: flex"] {
        justify-content: center;
        flex-wrap: wrap;
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 2.25rem !important;
    }
    
    h2 {
        font-size: 1.8rem !important;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }

    .hero-content div[style*="display: flex"] {
        flex-direction: column;
        width: 100%;
    }
}

@media (max-width: 768px) {
    nav .btn { display: none; } /* Hide heavy CTA in nav on mobile */
    #hero h1 { font-size: 2.5rem; }
    .container { padding: 0 1.5rem; }
}