/* ============================================
   THE SPORT FLOW - PREMIUM DARK MODE WEBSITE
   ============================================ */

/* CSS VARIABLES */
:root {
    --primary-blue: #4B5CC4;
    --dark-blue: #1B2A4A;
    --bg-dark: #0a0a0f;
    --bg-darker: #0d1117;
    --text-light: #ffffff;
    --text-gray: #b0b0b0;
    --border-color: #2a2a35;
    --overlay-dark: rgba(13, 17, 23, 0.85);
    
    /* Typography */
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-serif: Georgia, serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;
    --spacing-2xl: 6rem;
}

/* RESET & BASE STYLES */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-dark);
    color: var(--text-light);
    line-height: 1.6;
    font-size: 16px;
}

/* CONTAINER */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* TYPOGRAPHY */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

h1 {
    font-size: clamp(2.5rem, 8vw, 4.5rem);
}

h2 {
    font-size: clamp(2rem, 5vw, 3.5rem);
}

h3 {
    font-size: clamp(1.25rem, 3vw, 1.75rem);
}

p {
    font-size: 1rem;
    color: var(--text-gray);
    line-height: 1.8;
}

a {
    color: var(--primary-blue);
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: #6b7dd9;
}

/* BUTTONS */
.btn {
    display: inline-block;
    padding: 0.875rem 2rem;
    border-radius: 0.5rem;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    border: 2px solid transparent;
    transition: all 0.3s ease;
    text-align: center;
    white-space: nowrap;
}

.btn-primary {
    background-color: var(--primary-blue);
    color: var(--text-light);
    border-color: var(--primary-blue);
}

.btn-primary:hover {
    background-color: #6b7dd9;
    border-color: #6b7dd9;
    transform: translateY(-2px);
}

.btn-secondary {
    background-color: transparent;
    color: var(--text-light);
    border-color: var(--text-light);
}

.btn-secondary:hover {
    background-color: var(--text-light);
    color: var(--bg-dark);
}

/* HEADER / NAVIGATION */
.header {
    background-color: var(--bg-darker);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0;
    z-index: 1000;
}

.header.sticky {
    position: sticky;
    top: 0;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-lg);
}

.logo img {
    height: 70px;
    width: auto;
    transition: transform 0.3s ease;
}

.logo:hover img {
    transform: scale(1.05);
}

.nav {
    flex: 1;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
    align-items: center;
}

.nav-link {
    color: var(--text-light);
    font-weight: 500;
    font-size: 0.95rem;
    position: relative;
    transition: color 0.3s ease;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-blue);
    transition: width 0.3s ease;
}

.nav-link:hover::after {
    width: 100%;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.language-selector {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.lang-btn {
    background: none;
    border: none;
    color: var(--text-gray);
    cursor: pointer;
    font-weight: 600;
    font-size: 0.9rem;
    transition: color 0.3s ease;
}

.lang-btn.active {
    color: var(--primary-blue);
}

.lang-separator {
    color: var(--border-color);
}

.menu-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    gap: 5px;
}

.menu-toggle span {
    width: 25px;
    height: 2px;
    background-color: var(--text-light);
    transition: all 0.3s ease;
}

/* HERO SECTION */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.hero-bg-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(13, 17, 23, 0.9) 0%, rgba(27, 42, 74, 0.7) 100%);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
    padding: var(--spacing-2xl) var(--spacing-md);
}

.hero-title {
    margin-bottom: var(--spacing-lg);
    line-height: 1.1;
    font-weight: 800;
}

.hero-subtitle {
    font-size: clamp(1.25rem, 3vw, 1.75rem);
    color: var(--primary-blue);
    margin-bottom: var(--spacing-md);
    font-weight: 600;
}

.hero-subtitle-highlight {
    background: linear-gradient(135deg, var(--primary-blue) 0%, #6b7dd9 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
    font-size: clamp(1.35rem, 3.5vw, 1.9rem);
}

.hero-text {
    font-size: 1.1rem;
    color: var(--text-gray);
    margin-bottom: var(--spacing-2xl);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

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

/* SECTIONS */
section {
    padding: var(--spacing-2xl) 0;
    border-bottom: 1px solid var(--border-color);
}

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.section-description {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--spacing-2xl);
    font-size: 1.05rem;
}

/* QUÉ HACEMOS SECTION */
.que-hacemos {
    background-color: var(--bg-darker);
}

.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.cards-grid.cards-2x2 {
    grid-template-columns: repeat(2, 1fr);
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.cards-5 {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

.card {
    background-color: var(--bg-dark);
    border: 1px solid var(--border-color);
    padding: var(--spacing-lg);
    border-radius: 0.5rem;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.card:hover {
    border-color: var(--primary-blue);
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(75, 92, 196, 0.1);
}

.card h3 {
    color: var(--text-light);
}

.card p {
    color: var(--text-gray);
    font-size: 0.95rem;
}

/* PARA QUIÉN SECTION */
.para-quien {
    background-color: var(--bg-darker);
    position: relative;
}

.para-quien::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(10, 10, 15, 0.4);
    backdrop-filter: blur(3px);
    z-index: 1;
}

.para-quien .container {
    position: relative;
    z-index: 2;
}

/* SERVICIOS SECTION */
.servicios {
    background-color: var(--bg-darker);
}

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

.service-card {
    background-color: var(--bg-dark);
    border: 1px solid var(--border-color);
    padding: var(--spacing-lg);
    border-radius: 0.5rem;
    transition: all 0.3s ease;
}

.service-card:hover {
    border-color: var(--primary-blue);
    background-color: rgba(75, 92, 196, 0.05);
}

.service-card h3 {
    color: var(--text-light);
    margin-bottom: var(--spacing-md);
}

.service-card p {
    color: var(--text-gray);
    font-size: 0.95rem;
}

/* CÓMO TRABAJAMOS SECTION */
.como-trabajamos {
    background-color: var(--bg-dark);
    position: relative;
}

.como-trabajamos::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(10, 10, 15, 0.4);
    backdrop-filter: blur(3px);
    z-index: 1;
}

.como-trabajamos .container {
    position: relative;
    z-index: 2;
}

.process-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

.process-card {
    text-align: center;
    padding: var(--spacing-lg);
    border-radius: 0.5rem;
    background-color: var(--bg-darker);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.process-card:hover {
    border-color: var(--primary-blue);
    background-color: transparent;
    transform: translateY(-5px);
}

.process-card:hover h3,
.process-card:hover .step-number {
    background: linear-gradient(135deg, var(--primary-blue) 0%, #6b7dd9 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.process-card:hover p {
    color: var(--primary-blue);
}

.step-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary-blue);
    margin-bottom: var(--spacing-md);
}

.process-card h3 {
    color: var(--text-light);
    margin-bottom: var(--spacing-sm);
}

.process-card p {
    font-size: 0.9rem;
    color: var(--text-gray);
    line-height: 1.6;
}

/* PROYECTOS SECTION */
.proyectos {
    background-color: var(--bg-darker);
}

.projects-areas {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.area {
    background-color: var(--bg-dark);
    border: 1px solid var(--border-color);
    padding: var(--spacing-lg);
    border-radius: 0.5rem;
    transition: all 0.3s ease;
}

.area:hover {
    border-color: var(--primary-blue);
    box-shadow: 0 10px 30px rgba(75, 92, 196, 0.1);
}

.area h3 {
    color: var(--primary-blue);
    margin-bottom: var(--spacing-md);
}

.area p {
    font-size: 0.95rem;
    color: var(--text-gray);
    line-height: 1.8;
}

/* ALFONSO SECTION */
.alfonso {
    position: relative;
    min-height: 600px;
    display: flex;
    align-items: center;
    overflow: hidden;
    background-color: var(--bg-dark);
}

.alfonso-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.alfonso-bg-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: grayscale(100%) brightness(0.3);
}

.alfonso-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(13, 17, 23, 0.95) 0%, rgba(27, 42, 74, 0.8) 100%);
    z-index: 1;
}

.alfonso-content {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
}

.alfonso-text {
    max-width: 500px;
}

.alfonso-text h2 {
    margin-bottom: var(--spacing-lg);
}

.alfonso-text p {
    margin-bottom: var(--spacing-lg);
    font-size: 1rem;
}

.alfonso-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.alfonso-photo {
    width: 100%;
    max-width: 400px;
    height: auto;
    border-radius: 0.5rem;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
    object-fit: cover;
}

/* CONTACTO SECTION */
.contacto {
    background-color: var(--bg-darker);
}

.contacto-wrapper {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-2xl);
    margin-top: var(--spacing-2xl);
}

.contacto-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group input,
.form-group textarea {
    background-color: var(--bg-dark);
    border: 1px solid var(--border-color);
    color: var(--text-light);
    padding: var(--spacing-md);
    border-radius: 0.5rem;
    font-family: var(--font-sans);
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-gray);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(75, 92, 196, 0.1);
}

.contacto-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.info-item h3 {
    color: var(--primary-blue);
    margin-bottom: var(--spacing-sm);
    font-size: 1rem;
}

.info-item a {
    color: var(--text-light);
    font-weight: 500;
    transition: color 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.info-item a:hover {
    color: var(--primary-blue);
}

.info-item svg {
    width: 20px;
    height: 20px;
    fill: currentColor;
}

/* FOOTER */
.footer {
    background-color: var(--bg-darker);
    border-top: 1px solid var(--border-color);
    padding: var(--spacing-2xl) 0;
}

.footer-content {
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: var(--spacing-2xl);
    align-items: center;
}

.footer-logo img {
    height: 40px;
    width: auto;
}

.footer-links {
    display: flex;
    gap: var(--spacing-lg);
    justify-content: center;
    flex-wrap: wrap;
}

.footer-link {
    color: var(--text-gray);
    font-size: 0.9rem;
    transition: color 0.3s ease;
}

.footer-link:hover {
    color: var(--primary-blue);
}

.footer-copy {
    text-align: right;
    font-size: 0.85rem;
    color: var(--text-gray);
}

/* WHATSAPP BUTTON */
.whatsapp-button {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 60px;
    height: 60px;
    background-color: #25d366;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    transition: all 0.3s ease;
    z-index: 999;
}

.whatsapp-button:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(37, 211, 102, 0.4);
}

.whatsapp-button svg {
    width: 30px;
    height: 30px;
}

/* RESPONSIVE DESIGN */
.cards-grid.cards-2x2 {
    grid-template-columns: 1fr;
}

.process-grid {
    grid-template-columns: 1fr;
}

@media (max-width: 768px) {
    :root {
        --spacing-lg: 1.5rem;
        --spacing-xl: 2rem;
        --spacing-2xl: 3rem;
    }
    
    .header-content {
        gap: var(--spacing-md);
    }
    
    .nav {
        display: none;
    }
    
    .nav.active {
        display: flex;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--bg-darker);
        flex-direction: column;
        padding: var(--spacing-md);
        border-bottom: 1px solid var(--border-color);
    }
    
    .nav-menu {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .menu-toggle {
        display: flex;
    }
    
    .header-actions {
        gap: var(--spacing-sm);
    }
    
    .btn {
        padding: 0.75rem 1.5rem;
        font-size: 0.9rem;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .hero-buttons .btn {
        width: 100%;
    }
    
    .cards-grid,
    .services-grid,
    .process-steps,
    .projects-areas {
        grid-template-columns: 1fr;
    }
    
    .alfonso-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .contacto-wrapper {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--spacing-lg);
    }
    
    .footer-links {
        justify-content: center;
    }
    
    .footer-copy {
        text-align: center;
    }
    
    .whatsapp-button {
        bottom: 1rem;
        right: 1rem;
        width: 50px;
        height: 50px;
    }
    
    .whatsapp-button svg {
        width: 25px;
        height: 25px;
    }
}

@media (max-width: 480px) {
    :root {
        --spacing-md: 1rem;
        --spacing-lg: 1.25rem;
        --spacing-xl: 1.5rem;
        --spacing-2xl: 2rem;
    }
    
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    h1 {
        font-size: 2rem;
    }
    
    h2 {
        font-size: 1.5rem;
    }
    
    .hero-content {
        padding: var(--spacing-lg) var(--spacing-sm);
    }
    
    section {
        padding: var(--spacing-lg) 0;
    }
    
    .step-number {
        font-size: 2rem;
    }
    
    .process-steps {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ANIMATIONS */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.card,
.service-card,
.step,
.area {
    animation: fadeInUp 0.6s ease-out forwards;
}

.card:nth-child(1) { animation-delay: 0.1s; }
.card:nth-child(2) { animation-delay: 0.2s; }
.card:nth-child(3) { animation-delay: 0.3s; }
.card:nth-child(4) { animation-delay: 0.4s; }
.card:nth-child(5) { animation-delay: 0.5s; }
.card:nth-child(6) { animation-delay: 0.6s; }

/* SCROLLBAR */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-dark);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-blue);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: #6b7dd9;
}