/* ================================
   FUNDACION ALTO EMPRENDIMIENTO
   ================================ */

:root {
    --color-black: #0a0a0a;
    --color-dark: #1a1a1a;
    --color-gray-dark: #2a2a2a;
    --color-gray: #666666;
    --color-gray-light: #999999;
    --color-off-white: #f5f5f3;
    --color-white: #ffffff;
    --color-accent: #c9a227;
    --font-serif: 'Cormorant Garamond', Georgia, serif;
    --font-sans: 'Outfit', -apple-system, sans-serif;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 8rem;
    --transition: 0.3s ease;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: var(--font-sans); font-size: 18px; line-height: 1.7; color: var(--color-dark); background: var(--color-white); -webkit-font-smoothing: antialiased; }

/* ================================
   ACCESSIBILITY - WCAG 2.2 A & AA
   ================================ */

/* Skip Link - WCAG 2.4.1 */
.skip-link {
    position: absolute;
    top: -100px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-black);
    color: var(--color-white);
    padding: 1rem 2rem;
    z-index: 10000;
    text-decoration: none;
    font-weight: 600;
    border-radius: 0 0 8px 8px;
    transition: top 0.3s ease;
}
.skip-link:focus {
    top: 0;
    outline: 3px solid var(--color-accent);
    outline-offset: 2px;
}

/* Visually Hidden (for screen readers) - WCAG 1.3.1 */
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Focus Visible - WCAG 2.4.7 */
*:focus {
    outline: 3px solid var(--color-accent);
    outline-offset: 3px;
}

*:focus:not(:focus-visible) {
    outline: none;
}

*:focus-visible {
    outline: 3px solid var(--color-accent);
    outline-offset: 3px;
}

/* High Contrast Focus for buttons and links */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible {
    outline: 3px solid var(--color-accent);
    outline-offset: 3px;
    box-shadow: 0 0 0 6px rgba(201, 162, 39, 0.3);
}

/* Improved contrast for text - WCAG 1.4.3 */
.text-large { color: var(--color-dark); }
p { color: #555555; } /* Improved from #666666 for better contrast */

/* Reduced Motion - WCAG 2.3.3 */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    .fade-in { opacity: 1; transform: none; }
    .hero-content { animation: none; }
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
    :root {
        --color-gray: #333333;
        --color-gray-light: #555555;
    }
    .btn-primary { border: 2px solid var(--color-white); }
    .timeline-item, .partner-opportunity, .process-card { border: 2px solid var(--color-dark); }
}

/* Selection styling for better visibility */
::selection {
    background: var(--color-accent);
    color: var(--color-black);
}

h1, h2, h3 { font-family: var(--font-serif); font-weight: 500; line-height: 1.2; letter-spacing: -0.02em; }
h1 { font-size: clamp(2.5rem, 6vw, 5rem); }
h2 { font-size: clamp(2rem, 4vw, 3.5rem); margin-bottom: var(--spacing-md); }
h3 { font-size: 1.5rem; margin-bottom: var(--spacing-sm); }
p { margin-bottom: var(--spacing-sm); color: var(--color-gray); }
.text-large { font-size: 1.25rem; line-height: 1.6; color: var(--color-dark); }
.text-accent { color: var(--color-dark); font-weight: 500; margin-top: var(--spacing-md); }

.container { max-width: 1400px; margin: 0 auto; padding: 0 var(--spacing-md); }

/* Top Bar - Segmentos */
.top-bar {
    background: var(--color-black);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1001;
}
.top-bar-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: center;
    gap: 0;
}
.top-bar-item {
    color: var(--color-gray-light);
    text-decoration: none;
    font-size: 0.8rem;
    font-weight: 500;
    padding: 0.65rem 1.5rem;
    transition: all 0.3s ease;
    border-bottom: 2px solid transparent;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}
.top-bar-item:hover {
    color: var(--color-white);
    background: rgba(255,255,255,0.08);
}
.top-bar-item.active {
    color: var(--color-accent);
    border-bottom-color: var(--color-accent);
    background: rgba(201,162,39,0.1);
}

.nav { position: fixed; top: 40px; left: 0; right: 0; z-index: 1000; background: rgba(255, 255, 255, 0.95); backdrop-filter: blur(10px); border-bottom: 1px solid rgba(0, 0, 0, 0.05); }
.nav-container { max-width: 1400px; margin: 0 auto; padding: var(--spacing-sm) var(--spacing-md); display: flex; justify-content: space-between; align-items: center; }
.nav-logo { font-family: var(--font-sans); font-size: 0.85rem; font-weight: 600; letter-spacing: 0.15em; text-decoration: none; color: var(--color-black); }
.nav-links { display: flex; gap: var(--spacing-md); align-items: center; }
.nav-links a { font-size: 0.9rem; text-decoration: none; color: var(--color-gray); transition: color var(--transition); }
.nav-links a:hover { color: var(--color-black); }
.nav-cta { background: var(--color-black); color: var(--color-white) !important; padding: 0.6rem 1.5rem; border-radius: 2px; }
.nav-cta:hover { background: var(--color-gray-dark); }
.nav-toggle { display: none; }

.btn { display: inline-block; font-family: var(--font-sans); font-size: 0.95rem; font-weight: 500; text-decoration: none; padding: 1rem 2.5rem; border-radius: 2px; transition: all var(--transition); cursor: pointer; border: none; }
.btn-primary { background: var(--color-black); color: var(--color-white); }
.btn-primary:hover { background: var(--color-gray-dark); transform: translateY(-2px); }
.btn-large { padding: 1.25rem 3rem; font-size: 1.1rem; }

.hero { position: relative; min-height: 100vh; display: flex; align-items: center; justify-content: center; overflow: hidden; }
.hero-bg { position: absolute; inset: 0; z-index: -1; }
.hero-bg img { width: 100%; height: 100%; object-fit: cover; filter: brightness(0.3); }
.hero-content { text-align: center; color: var(--color-white); max-width: 900px; padding: var(--spacing-md); animation: fadeInUp 1s ease forwards; }
.hero-content h1 { margin-bottom: var(--spacing-md); }
.hero-subtitle { font-size: 1.5rem; color: var(--color-gray-light); margin-bottom: var(--spacing-lg); }

.section { padding: var(--spacing-xl) 0; }
.section-label { display: block; font-family: var(--font-sans); font-size: 0.8rem; font-weight: 600; letter-spacing: 0.2em; text-transform: uppercase; color: var(--color-accent); margin-bottom: var(--spacing-sm); }
.section-header { text-align: center; max-width: 800px; margin: 0 auto var(--spacing-lg); }
.section-dark { background: var(--color-black); color: var(--color-white); }
.section-dark h2, .section-dark .text-large, .section-dark .text-accent { color: var(--color-white); }
.section-dark p { color: var(--color-gray-light); }
.section-light { background: var(--color-off-white); }

.grid { display: grid; gap: var(--spacing-lg); align-items: center; }
.grid-2 { grid-template-columns: 1fr 1fr; }
.grid-reverse .content-block { order: 2; }
.grid-reverse .image-block { order: 1; }

.image-block img { width: 100%; height: 500px; object-fit: cover; border-radius: 4px; }
.content-block { max-width: 550px; }
.highlight-box { background: var(--color-white); padding: var(--spacing-md); border-left: 3px solid var(--color-accent); margin-top: var(--spacing-md); color: var(--color-dark); }

.section-stats { background: var(--color-dark); color: var(--color-white); text-align: center; }
.stats-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--spacing-lg); margin-bottom: var(--spacing-lg); }
.stat-item { padding: var(--spacing-md); }
.stat-age { display: block; font-family: var(--font-serif); font-size: 6rem; font-weight: 400; color: var(--color-accent); line-height: 1; margin-bottom: var(--spacing-sm); }
.stat-item p { color: var(--color-gray-light); font-size: 1.1rem; }
.stats-conclusion { font-family: var(--font-serif); font-size: 2rem; color: var(--color-white); max-width: 600px; margin: 0 auto; }

.section-quote { position: relative; min-height: 80vh; display: flex; align-items: center; overflow: hidden; }
.quote-bg { position: absolute; inset: 0; z-index: -1; }
.quote-bg img { width: 100%; height: 100%; object-fit: cover; filter: brightness(0.2); }
.quote-block { max-width: 800px; margin: 0 auto; text-align: center; color: var(--color-white); }
.quote-block p { font-family: var(--font-serif); font-size: 1.75rem; color: var(--color-gray-light); margin-bottom: var(--spacing-md); }
.quote-conclusion { color: var(--color-white) !important; font-size: 2.25rem !important; margin-top: var(--spacing-lg); }

.process-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--spacing-md); margin-bottom: var(--spacing-lg); }
.process-card { background: var(--color-white); padding: var(--spacing-md); border-radius: 4px; box-shadow: 0 2px 20px rgba(0, 0, 0, 0.05); }
.process-icon { height: 200px; margin-bottom: var(--spacing-md); overflow: hidden; border-radius: 4px; }
.process-icon img { width: 100%; height: 100%; object-fit: cover; filter: grayscale(100%); transition: filter var(--transition); }
.process-card:hover .process-icon img { filter: grayscale(0%); }
.process-card h3 { color: var(--color-accent); font-family: var(--font-sans); font-size: 0.85rem; font-weight: 600; letter-spacing: 0.15em; text-transform: uppercase; }
.process-title { font-weight: 500; color: var(--color-dark); margin-bottom: var(--spacing-xs); }
.process-footer { text-align: center; font-family: var(--font-serif); font-size: 1.75rem; color: var(--color-dark); }

.section-nasa { position: relative; min-height: 100vh; display: flex; align-items: center; overflow: hidden; }
.nasa-bg { position: absolute; inset: 0; z-index: -1; }
.nasa-bg img { width: 100%; height: 100%; object-fit: cover; filter: brightness(0.25); }
.nasa-content { max-width: 700px; color: var(--color-white); }
.nasa-content h2 { color: var(--color-white); }
.nasa-content .text-large, .nasa-content p { color: var(--color-gray-light); }
.nasa-list { list-style: none; margin-top: var(--spacing-md); }
.nasa-list li { position: relative; padding-left: 1.5rem; margin-bottom: 0.75rem; color: var(--color-white); }
.nasa-list li::before { content: ''; position: absolute; left: 0; top: 0.6rem; width: 6px; height: 6px; background: var(--color-accent); border-radius: 50%; }

.section-truth { background: var(--color-white); }
.truth-highlight { margin-top: var(--spacing-md); padding: var(--spacing-md); background: var(--color-off-white); border-radius: 4px; }
.truth-highlight p { font-family: var(--font-serif); font-size: 1.5rem; color: var(--color-dark); margin-bottom: var(--spacing-xs); }

.section-advantages { background: var(--color-dark); color: var(--color-white); text-align: center; }
.section-advantages h2 { color: var(--color-white); margin-bottom: var(--spacing-lg); }
.advantages-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: var(--spacing-sm); margin-bottom: var(--spacing-lg); }
.advantage-item { padding: var(--spacing-md); background: var(--color-gray-dark); border-radius: 4px; font-size: 0.95rem; transition: background var(--transition); }
.advantage-item:hover { background: var(--color-accent); color: var(--color-black); }
.advantages-footer { font-family: var(--font-serif); font-size: 1.5rem; color: var(--color-white); max-width: 700px; margin: 0 auto; }

.section-seek { position: relative; min-height: 80vh; display: flex; align-items: center; overflow: hidden; }
.seek-bg { position: absolute; inset: 0; z-index: -1; }
.seek-bg img { width: 100%; height: 100%; object-fit: cover; filter: brightness(0.3); }
.seek-content { max-width: 700px; color: var(--color-white); }
.seek-content h2 { color: var(--color-white); }
.seek-content .text-large { color: var(--color-white); }
.seek-content p { color: var(--color-gray-light); }

.section-teams { background: var(--color-off-white); }
.roles-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--spacing-xs); margin: var(--spacing-md) 0; }
.role { padding: 0.75rem; background: var(--color-white); text-align: center; font-size: 0.9rem; color: var(--color-dark); border-radius: 2px; border: 1px solid rgba(0, 0, 0, 0.05); }

.section-why { background: var(--color-white); }
.why-content { max-width: 900px; margin: 0 auto; text-align: center; }
.why-grid { display: grid; gap: var(--spacing-md); }
.why-grid p { font-size: 1.2rem; color: var(--color-dark); }

.section-thesis { position: relative; min-height: 80vh; display: flex; align-items: center; overflow: hidden; }
.thesis-bg { position: absolute; inset: 0; z-index: -1; }
.thesis-bg img { width: 100%; height: 100%; object-fit: cover; filter: brightness(0.2); }
.thesis-content { max-width: 800px; margin: 0 auto; text-align: center; color: var(--color-white); }
.thesis-content h2 { color: var(--color-white); margin-bottom: var(--spacing-sm); }
.thesis-list { margin-top: var(--spacing-lg); }
.thesis-list p { font-family: var(--font-serif); font-size: 1.5rem; color: var(--color-gray-light); margin-bottom: var(--spacing-xs); }

.section-not { background: var(--color-black); color: var(--color-white); }
.not-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--spacing-md); margin-bottom: var(--spacing-xl); }
.not-item { text-align: center; padding: var(--spacing-md); border: 1px solid var(--color-gray-dark); border-radius: 4px; }
.not-label { display: block; font-size: 0.8rem; color: var(--color-gray); margin-bottom: var(--spacing-xs); text-transform: uppercase; letter-spacing: 0.1em; }
.not-value { font-family: var(--font-serif); font-size: 1.5rem; color: var(--color-gray-light); }
.is-block { max-width: 800px; margin: 0 auto; text-align: center; }
.is-block p { font-size: 1.1rem; color: var(--color-gray-light); margin-bottom: var(--spacing-sm); }
.is-highlight { font-family: var(--font-serif); font-size: 1.75rem !important; color: var(--color-white) !important; margin-top: var(--spacing-md); }

.section-cta { background: linear-gradient(135deg, var(--color-off-white) 0%, var(--color-white) 100%); text-align: center; }
.cta-content { max-width: 800px; margin: 0 auto; }
.cta-content h2 { color: var(--color-black); }
.cta-content .text-large { margin-bottom: var(--spacing-lg); }
.cta-benefits { display: flex; flex-wrap: wrap; justify-content: center; gap: var(--spacing-sm); margin-bottom: var(--spacing-lg); }
.benefit { padding: 0.75rem 1.5rem; background: var(--color-white); border: 1px solid rgba(0, 0, 0, 0.1); border-radius: 50px; font-size: 0.9rem; color: var(--color-dark); }

/* Contact Form */
.contact-form { max-width: 500px; margin: var(--spacing-lg) auto 0; text-align: left; }
.form-group { margin-bottom: var(--spacing-sm); }
.form-group input, .form-group textarea { width: 100%; padding: 1rem 1.25rem; font-family: var(--font-sans); font-size: 1rem; border: 2px solid rgba(0, 0, 0, 0.1); border-radius: 4px; background: var(--color-white); transition: border-color var(--transition); }
.form-group input:focus, .form-group textarea:focus { outline: none; border-color: var(--color-accent); }
.form-group input::placeholder, .form-group textarea::placeholder { color: var(--color-gray-light); }
.form-group textarea { resize: vertical; min-height: 120px; }
.contact-form .btn { width: 100%; margin-top: var(--spacing-sm); }

/* Challenge 2026 */
.section-challenge { position: relative; min-height: 70vh; display: flex; align-items: center; overflow: hidden; text-align: center; }
.challenge-bg { position: absolute; inset: 0; z-index: -1; }
.challenge-bg img { width: 100%; height: 100%; object-fit: cover; filter: brightness(0.2); }
.challenge-header { color: var(--color-white); }
.challenge-header h2 { color: var(--color-white); font-size: clamp(3rem, 10vw, 7rem); margin-bottom: var(--spacing-sm); text-transform: uppercase; letter-spacing: 0.05em; }
.challenge-header .text-large { color: var(--color-gray-light); font-size: 1.5rem; }

/* Timeline - Premium Design */
.challenge-timeline { max-width: 900px; margin: 0 auto; position: relative; }
.challenge-timeline::before { content: ''; position: absolute; left: 40px; top: 0; bottom: 0; width: 2px; background: linear-gradient(to bottom, var(--color-accent), transparent); }

.timeline-item { 
    display: grid; 
    grid-template-columns: 80px 1fr; 
    gap: var(--spacing-lg); 
    margin-bottom: var(--spacing-lg); 
    padding: var(--spacing-md);
    background: var(--color-white);
    border-radius: 8px;
    box-shadow: 0 4px 30px rgba(0,0,0,0.08);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}
.timeline-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    width: 4px;
    height: 100%;
    background: var(--color-accent);
    transform: scaleY(0);
    transition: transform 0.4s ease;
}
.timeline-item:hover {
    transform: translateX(10px) scale(1.02);
    box-shadow: 0 10px 50px rgba(201, 162, 39, 0.2);
}
.timeline-item:hover::before {
    transform: scaleY(1);
}

.timeline-number { 
    font-family: var(--font-serif); 
    font-size: 4rem; 
    background: linear-gradient(135deg, var(--color-accent), #e8c547);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 600; 
    line-height: 1;
    transition: transform 0.3s ease;
}
.timeline-item:hover .timeline-number {
    transform: scale(1.1);
}

.timeline-content h3 { 
    font-family: var(--font-sans); 
    font-size: 1.4rem; 
    font-weight: 700; 
    margin-bottom: 0.5rem; 
    color: var(--color-dark);
    transition: color 0.3s ease;
}
.timeline-item:hover .timeline-content h3 {
    color: var(--color-accent);
}
.timeline-subtitle { 
    display: inline-block;
    font-size: 0.85rem; 
    color: var(--color-white); 
    background: var(--color-accent);
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-weight: 500; 
    margin-bottom: var(--spacing-sm);
    transition: all 0.3s ease;
}
.timeline-item:hover .timeline-subtitle {
    background: var(--color-dark);
}
.timeline-content p:last-child { margin-bottom: 0; color: var(--color-gray); }

/* Inmersion Grid - Interactive Cards */
.inmersion-grid { 
    display: grid; 
    grid-template-columns: repeat(3, 1fr); 
    gap: var(--spacing-md); 
    margin-bottom: var(--spacing-lg); 
}
.inmersion-item { 
    padding: var(--spacing-lg); 
    background: linear-gradient(135deg, var(--color-gray-dark) 0%, var(--color-black) 100%);
    border-radius: 12px; 
    text-align: center; 
    color: var(--color-white); 
    font-size: 1rem;
    font-weight: 500;
    position: relative;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    border: 1px solid rgba(255,255,255,0.1);
}
.inmersion-item:hover {
    transform: translateY(-8px) scale(1.03);
    box-shadow: 0 20px 40px rgba(201, 162, 39, 0.3);
    background: linear-gradient(135deg, var(--color-accent) 0%, #d4a82a 100%);
    color: var(--color-black);
    font-weight: 600;
    border-color: var(--color-accent);
}
.inmersion-footer { text-align: center; font-family: var(--font-serif); font-size: 1.75rem; color: var(--color-white); max-width: 700px; margin: 0 auto; }

/* Partners - Multicolor Cards */
.section-partners { background: var(--color-off-white); }
.partners-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--spacing-md); margin-bottom: var(--spacing-lg); }
.partner-opportunity { 
    background: var(--color-white); 
    padding: var(--spacing-lg); 
    border-radius: 12px; 
    box-shadow: 0 4px 20px rgba(0,0,0,0.05);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    position: relative;
    overflow: hidden;
    border-left: 5px solid;
}

/* Multicolor borders */
.partner-opportunity:nth-child(1) { border-color: #c9a227; } /* Gold */
.partner-opportunity:nth-child(2) { border-color: #2563eb; } /* Blue */
.partner-opportunity:nth-child(3) { border-color: #059669; } /* Green */
.partner-opportunity:nth-child(4) { border-color: #dc2626; } /* Red */
.partner-opportunity:nth-child(5) { border-color: #7c3aed; } /* Purple */
.partner-opportunity:nth-child(6) { border-color: #ea580c; } /* Orange */

.partner-opportunity::before {
    content: '';
    position: absolute;
    top: 0;
    left: -5px;
    width: calc(100% + 5px);
    height: 100%;
    opacity: 0;
    transition: opacity 0.4s ease;
}
.partner-opportunity:nth-child(1)::before { background: linear-gradient(135deg, rgba(201,162,39,0.1) 0%, transparent 100%); }
.partner-opportunity:nth-child(2)::before { background: linear-gradient(135deg, rgba(37,99,235,0.1) 0%, transparent 100%); }
.partner-opportunity:nth-child(3)::before { background: linear-gradient(135deg, rgba(5,150,105,0.1) 0%, transparent 100%); }
.partner-opportunity:nth-child(4)::before { background: linear-gradient(135deg, rgba(220,38,38,0.1) 0%, transparent 100%); }
.partner-opportunity:nth-child(5)::before { background: linear-gradient(135deg, rgba(124,58,237,0.1) 0%, transparent 100%); }
.partner-opportunity:nth-child(6)::before { background: linear-gradient(135deg, rgba(234,88,12,0.1) 0%, transparent 100%); }

.partner-opportunity:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: 0 20px 50px rgba(0,0,0,0.15);
}
.partner-opportunity:hover::before {
    opacity: 1;
}

/* Multicolor h3 on hover */
.partner-opportunity h3 { 
    font-family: var(--font-sans); 
    font-size: 1.15rem; 
    font-weight: 700; 
    color: var(--color-dark); 
    margin-bottom: var(--spacing-sm);
    transition: color 0.3s ease;
    position: relative;
    z-index: 1;
}
.partner-opportunity:nth-child(1):hover h3 { color: #c9a227; }
.partner-opportunity:nth-child(2):hover h3 { color: #2563eb; }
.partner-opportunity:nth-child(3):hover h3 { color: #059669; }
.partner-opportunity:nth-child(4):hover h3 { color: #dc2626; }
.partner-opportunity:nth-child(5):hover h3 { color: #7c3aed; }
.partner-opportunity:nth-child(6):hover h3 { color: #ea580c; }

.partner-opportunity p { font-size: 0.95rem; margin-bottom: 0; color: var(--color-gray); position: relative; z-index: 1; }
.partners-footer { text-align: center; font-family: var(--font-serif); font-size: 1.75rem; color: var(--color-dark); }

/* Language Selector */
.lang-selector { display: flex; gap: 0.5rem; margin-left: var(--spacing-sm); }
.lang-selector a { font-size: 0.8rem; padding: 0.25rem 0.5rem; text-decoration: none; color: var(--color-gray); border: 1px solid var(--color-gray-light); border-radius: 2px; }
.lang-selector a.active, .lang-selector a:hover { background: var(--color-black); color: var(--color-white); border-color: var(--color-black); }

@media (max-width: 768px) {
    .challenge-timeline::before { left: 25px; }
    .timeline-item { grid-template-columns: 60px 1fr; gap: var(--spacing-sm); padding: var(--spacing-sm); }
    .timeline-item:hover { transform: translateX(5px) scale(1.01); }
    .timeline-number { font-size: 2.5rem; }
    .timeline-content h3 { font-size: 1.1rem; }
    .inmersion-grid { grid-template-columns: 1fr; gap: var(--spacing-sm); }
    .inmersion-item { padding: var(--spacing-md); }
    .inmersion-item:hover { transform: translateY(-4px) scale(1.01); }
    .partners-grid { grid-template-columns: 1fr; }
    .partner-opportunity:hover { transform: translateY(-5px); }
    .challenge-header h2 { font-size: 2.5rem; }
}

/* Services Grid - Landing Pages */
.services-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
}
.service-card {
    background: rgba(255,255,255,0.05);
    padding: var(--spacing-lg);
    border-radius: 8px;
    border: 1px solid rgba(255,255,255,0.1);
    transition: all 0.3s ease;
}
.service-card:hover {
    background: rgba(255,255,255,0.1);
    transform: translateY(-5px);
}
.service-number {
    font-family: var(--font-serif);
    font-size: 3rem;
    color: var(--color-accent);
    font-weight: 400;
    line-height: 1;
    margin-bottom: var(--spacing-sm);
}
.service-card h3 {
    color: var(--color-white);
    margin-bottom: var(--spacing-sm);
}
.service-card p {
    color: var(--color-gray-light);
    margin-bottom: var(--spacing-sm);
}
.service-features {
    list-style: none;
    padding: 0;
}
.service-features li {
    color: var(--color-gray-light);
    padding: 0.5rem 0;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    font-size: 0.95rem;
}
.service-features li:last-child {
    border-bottom: none;
}

/* Stats Grid Alt */
.stats-grid-alt {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
}
.stat-card {
    background: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: 8px;
    text-align: center;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
}
.stat-number {
    display: block;
    font-family: var(--font-serif);
    font-size: 4rem;
    color: var(--color-accent);
    font-weight: 500;
    line-height: 1;
    margin-bottom: var(--spacing-sm);
}
.stat-card p {
    color: var(--color-gray);
    font-size: 0.95rem;
    margin: 0;
}

/* Benefits Grid */
.benefits-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
}
.benefit-card {
    background: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.05);
    border-left: 4px solid var(--color-accent);
    transition: all 0.3s ease;
}
.benefit-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}
.benefit-card h3 {
    font-family: var(--font-sans);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-dark);
    margin-bottom: var(--spacing-xs);
}
.benefit-card p {
    font-size: 0.95rem;
    margin: 0;
}

/* Form Row */
.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-sm);
}

/* Feature List */
.feature-list {
    list-style: none;
    padding: 0;
    margin: var(--spacing-sm) 0;
}
.feature-list li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
    color: var(--color-gray);
}
.feature-list li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--color-accent);
}

/* Select styling */
select {
    width: 100%;
    padding: 1rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-family: var(--font-sans);
    font-size: 1rem;
    background: var(--color-white);
    cursor: pointer;
    transition: border-color 0.3s ease;
}
select:focus {
    border-color: var(--color-accent);
    outline: none;
}

@media (max-width: 1024px) {
    .services-grid { grid-template-columns: 1fr; }
    .stats-grid-alt { grid-template-columns: 1fr; }
    .benefits-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .benefits-grid { grid-template-columns: 1fr; }
    .form-row { grid-template-columns: 1fr; }
    .stat-number { font-size: 3rem; }
}

.footer { background: var(--color-black); padding: var(--spacing-lg) 0; text-align: center; }
.footer-logo { font-family: var(--font-sans); font-size: 0.85rem; font-weight: 600; letter-spacing: 0.2em; color: var(--color-white); margin-bottom: var(--spacing-sm); }
.footer-tagline { color: var(--color-gray); font-size: 0.9rem; }

@keyframes fadeInUp { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: translateY(0); } }
.fade-in { opacity: 0; transform: translateY(20px); transition: opacity 0.6s ease, transform 0.6s ease; }
.fade-in.visible { opacity: 1; transform: translateY(0); }

@media (max-width: 1024px) {
    .grid-2 { grid-template-columns: 1fr; }
    .grid-reverse .content-block, .grid-reverse .image-block { order: unset; }
    .process-grid { grid-template-columns: 1fr; }
    .advantages-grid { grid-template-columns: repeat(2, 1fr); }
    .not-grid { grid-template-columns: repeat(2, 1fr); }
    .stats-grid { grid-template-columns: 1fr; gap: var(--spacing-md); }
    .stat-age { font-size: 4rem; }
    .roles-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    body { font-size: 16px; }
    .top-bar-container {
        overflow-x: auto;
        justify-content: flex-start;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
        padding: 0 var(--spacing-sm);
    }
    .top-bar-container::-webkit-scrollbar { display: none; }
    .top-bar-item {
        font-size: 0.7rem;
        padding: 0.5rem 0.8rem;
        white-space: nowrap;
    }
    .nav { top: 36px; }
    .nav-container { padding: 0.75rem var(--spacing-sm); }
    .nav-logo { font-size: 0.7rem; letter-spacing: 0.1em; }
    .nav-toggle { display: flex; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 10px; z-index: 1001; }
    .nav-toggle span { display: block; width: 22px; height: 2px; background: var(--color-black); transition: all var(--transition); }
    .nav-toggle.active span:first-child { transform: rotate(45deg) translate(3px, 5px); }
    .nav-toggle.active span:last-child { transform: rotate(-45deg) translate(3px, -5px); }
    .nav-links { position: fixed; top: 0; left: 0; right: 0; bottom: 0; background: var(--color-white); flex-direction: column; justify-content: center; align-items: center; gap: var(--spacing-lg); opacity: 0; visibility: hidden; transition: all var(--transition); }
    .nav-links.active { opacity: 1; visibility: visible; }
    .nav-links a { font-size: 1.75rem; font-family: var(--font-serif); }
    .nav-links .nav-cta { font-family: var(--font-sans); font-size: 1rem; padding: 1rem 2rem; }
    .container { padding: 0 var(--spacing-sm); }
    .hero { min-height: 100vh; min-height: 100dvh; }
    .hero-content { padding: var(--spacing-sm); }
    .hero-content h1 { font-size: 2rem; line-height: 1.15; margin-bottom: var(--spacing-sm); }
    .hero-subtitle { font-size: 1.1rem; margin-bottom: var(--spacing-md); }
    h2 { font-size: 1.75rem; margin-bottom: var(--spacing-sm); }
    .section { padding: var(--spacing-lg) 0; }
    .image-block img { height: 280px; }
    .content-block { max-width: 100%; }
    .stat-age { font-size: 3.5rem; }
    .stats-conclusion { font-size: 1.25rem; padding: 0 var(--spacing-sm); }
    .section-quote { min-height: 70vh; padding: var(--spacing-lg) 0; }
    .quote-block p { font-size: 1.1rem; margin-bottom: var(--spacing-sm); }
    .quote-conclusion { font-size: 1.35rem !important; }
    .process-icon { height: 180px; }
    .process-icon img { filter: grayscale(0%); }
    .process-footer { font-size: 1.25rem; }
    .section-nasa { min-height: 80vh; padding: var(--spacing-lg) 0; }
    .advantages-grid { grid-template-columns: 1fr 1fr; gap: 0.5rem; }
    .advantage-item { padding: 0.75rem 0.5rem; font-size: 0.8rem; }
    .not-grid { grid-template-columns: 1fr 1fr; gap: var(--spacing-sm); margin-bottom: var(--spacing-lg); }
    .not-value { font-size: 1.1rem; }
    .btn { padding: 0.9rem 1.75rem; font-size: 0.9rem; width: 100%; text-align: center; }
}

@media (max-width: 380px) {
    .hero-content h1 { font-size: 1.75rem; }
    h2 { font-size: 1.5rem; }
    .stat-age { font-size: 3rem; }
    .advantages-grid, .not-grid { grid-template-columns: 1fr; }
}
""