/* =============================================
   GYMBRO LANDING PAGE - STYLES
   Brandbook v1.0 - 12.01.2026
   ============================================= */

/* CSS VARIABLES - Colores del brandbook */
:root {
    /* Colores principales */
    --color-verde: #00ffb4;
    --color-verde-variante: #00f2a7;
    --color-gris-oscuro: #252525;
    --color-blanco: #ffffff;
    --color-negro: #000000;
    
    /* Colores secundarios */
    --color-gris-medio: #737373;
    --color-gris-claro: #c8c8c8;
    --color-magenta: #ff50ff;
    --color-amarillo: #ffff00;
    
    /* Tipografías */
    --font-display: 'Parkinsans', sans-serif;
    --font-body: 'Poppins', sans-serif;
    
    /* Espaciados */
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 40px;
    --spacing-xl: 60px;
    --spacing-xxl: 80px;
    
    /* Bordes */
    --border-radius: 24px;
    --border-radius-sm: 16px;
}

/* =============================================
   RESET & BASE STYLES
   ============================================= */

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-gris-oscuro);
    background-color: var(--color-blanco);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* =============================================
   TYPOGRAPHY
   ============================================= */

h1, h2, h3 {
    font-family: var(--font-display);
    line-height: 1.2;
}

h1 {
    font-size: clamp(32px, 5vw, 64px);
    font-weight: 800;
    text-transform: lowercase;
}

h2 {
    font-size: clamp(28px, 4vw, 48px);
    font-weight: 700;
    text-transform: lowercase;
}

h3 {
    font-size: clamp(20px, 3vw, 24px);
    font-weight: 600;
}

p {
    font-family: var(--font-body);
    font-size: 16px;
    font-weight: 400;
    line-height: 1.6;
}

/* =============================================
   LAYOUT UTILITIES
   ============================================= */

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

section {
    padding: var(--spacing-xxl) 0;
}

/* =============================================
   BUTTONS
   ============================================= */

.btn {
    display: inline-block;
    padding: var(--spacing-sm) 32px;
    border-radius: var(--border-radius);
    font-family: var(--font-body);
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
}

.btn-primary {
    background-color: var(--color-verde);
    color: var(--color-gris-oscuro);
}

.btn-primary:hover {
    background-color: var(--color-verde-variante);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 255, 180, 0.3);
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-verde);
    border: 2px solid var(--color-verde);
}

.btn-secondary:hover {
    background-color: var(--color-verde);
    color: var(--color-gris-oscuro);
}

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

.hero {
    background-color: var(--color-gris-oscuro);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--spacing-xxl) var(--spacing-lg);
}

.hero .container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-lg);
}

.hero-logo {
    width: clamp(180px, 30vw, 240px);
    height: auto;
}

.hero-title {
    color: var(--color-verde);
    max-width: 900px;
}

.hero-subtitle {
    color: var(--color-blanco);
    font-size: clamp(16px, 2vw, 20px);
    max-width: 700px;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
    justify-content: center;
}

.hero-footnote {
    color: var(--color-gris-claro);
    font-size: 14px;
}

/* =============================================
   WHY GYMBRO SECTION
   ============================================= */

.why-gymbro {
    background-color: var(--color-blanco);
}

.section-title {
    text-align: center;
    color: var(--color-gris-oscuro);
    margin-bottom: var(--spacing-xl);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.section-title.white {
    color: var(--color-blanco);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.feature {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: var(--spacing-sm);
}

.feature-icon {
    font-size: 48px;
    margin-bottom: var(--spacing-sm);
}
.feature-icon-img {
    width: 120px;
    height: 120px;
    object-fit: contain;
    margin-bottom: var(--spacing-sm);
}
.feature-title {
    color: var(--color-gris-oscuro);
    text-transform: none;
}

.feature-text {
    color: var(--color-gris-medio);
    max-width: 360px;
}

/* =============================================
   HOW IT WORKS SECTION
   ============================================= */

.how-it-works {
    background-color: #f5f5f5;
}

.tabs-nav {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.tab-btn {
    background: transparent;
    border: none;
    border-bottom: 3px solid transparent;
    padding: var(--spacing-sm) var(--spacing-md);
    font-family: var(--font-body);
    font-size: 18px;
    font-weight: 600;
    color: var(--color-gris-medio);
    cursor: pointer;
    transition: all 0.3s ease;
}

.tab-btn.active {
    color: var(--color-gris-oscuro);
    border-bottom-color: var(--color-verde);
}

.tab-btn:hover {
    color: var(--color-gris-oscuro);
}

.tab-content {
    display: none;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.tab-content.active {
    display: block;
    opacity: 1;
    animation: fadeIn 0.5s ease;
}

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

.steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
    max-width: 1200px;
    margin: 0 auto;
}

/* En mobile, 2x2 */
@media (max-width: 768px) {
    .steps {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-md);
    }
}

/* En mobile chico, 1 columna */
@media (max-width: 480px) {
    .steps {
        grid-template-columns: 1fr;
    }
}

.step {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: var(--spacing-sm);
}

.step-number {
    width: 60px;
    height: 60px;
    background-color: var(--color-verde);
    color: var(--color-gris-oscuro);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-display);
    font-size: 32px;
    font-weight: 800;
    margin-bottom: var(--spacing-sm);
}

.step-title {
    color: var(--color-gris-oscuro);
    text-transform: none;
}

.step-text {
    color: var(--color-gris-medio);
    max-width: 340px;
}

/* =============================================
   EARLY ADOPTERS SECTION
   ============================================= */

.early-adopters {
    background: linear-gradient(135deg, var(--color-gris-oscuro) 0%, #1a1a1a 100%);
    text-align: center;
}

.section-subtitle {
    color: var(--color-gris-claro);
    font-size: 18px;
    max-width: 700px;
    margin: 0 auto var(--spacing-xl);
}

.early-form {
    max-width: 500px;
    margin: 0 auto var(--spacing-xl);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.early-form input[type="email"] {
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius-sm);
    border: 2px solid var(--color-gris-medio);
    font-family: var(--font-body);
    font-size: 16px;
    background-color: var(--color-blanco);
    transition: border-color 0.3s ease;
}

.early-form input[type="email"]:focus {
    outline: none;
    border-color: var(--color-verde);
}

.checkbox-group {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--color-blanco);
    cursor: pointer;
}

.checkbox-label input[type="radio"] {
    width: 20px;
    height: 20px;
    accent-color: var(--color-verde);
    cursor: pointer;
}

.form-message {
    color: var(--color-verde);
    font-size: 14px;
    min-height: 20px;
}

.app-stores {
    margin-top: var(--spacing-xl);
}

.app-stores p {
    color: var(--color-gris-claro);
    margin-bottom: var(--spacing-md);
}

.store-badges {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
}

.store-badge {
    display: inline-block;
    transition: transform 0.3s ease;
}

.store-badge:hover {
    transform: translateY(-2px);
}

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

.footer {
    background-color: var(--color-gris-oscuro);
    color: var(--color-blanco);
    padding: var(--spacing-xl) 0 var(--spacing-md);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-logo {
    width: 180px;
    height: auto;
    margin-bottom: var(--spacing-sm);
}

.footer-tagline {
    color: var(--color-gris-claro);
    font-size: 14px;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.footer-links a {
    color: var(--color-blanco);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: var(--color-verde);
}

.footer-social {
    display: flex;
    gap: var(--spacing-sm);
}

.footer-social a {
    transition: transform 0.3s ease;
}

.footer-social a:hover {
    transform: translateY(-2px);
}

.footer-legal {
    border-top: 1px solid var(--color-gris-medio);
    padding-top: var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.footer-legal p {
    color: var(--color-gris-claro);
    font-size: 14px;
}

.legal-links {
    display: flex;
    gap: var(--spacing-md);
}

.legal-links a {
    color: var(--color-gris-claro);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s ease;
}

.legal-links a:hover {
    color: var(--color-verde);
}

/* =============================================
   RESPONSIVE DESIGN
   ============================================= */

@media (max-width: 768px) {
    section {
        padding: var(--spacing-xl) 0;
    }
    
    .hero-cta {
        flex-direction: column;
        width: 100%;
    }
    
    .hero-cta .btn {
        width: 100%;
        max-width: 300px;
    }
    
    .features-grid,
    .steps {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .tabs-nav {
        flex-direction: column;
        gap: 0;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-social {
        justify-content: center;
    }
    
    .footer-legal {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-md);
    }
    
    h1 {
        font-size: 32px;
    }
    
    h2 {
        font-size: 28px;
    }
}