/* ===================================
   Diego Salamanca - Portfolio
   Inspirado en adhamdannaway.com
   =================================== */

/* CSS Variables */
:root {
    /* Colors - Dark Elegant Theme */
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-tertiary: #1a1a24;
    --bg-card: #16161f;
    
    --text-primary: #f5f5f7;
    --text-secondary: #a0a0a8;
    --text-muted: #6b6b75;
    
    --accent-primary: #6366f1;
    --accent-secondary: #8b5cf6;
    --accent-gradient: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #a855f7 100%);
    --accent-glow: rgba(99, 102, 241, 0.3);
    
    /* Code Colors */
    --code-keyword: #c792ea;
    --code-string: #c3e88d;
    --code-variable: #82aaff;
    --code-function: #82aaff;
    --code-property: #f78c6c;
    --code-comment: #546e7a;
    
    /* Spacing */
    --section-padding: 120px;
    --container-max: 1200px;
    
    /* Typography */
    --font-display: 'Playfair Display', Georgia, serif;
    --font-code: 'Source Code Pro', 'Fira Code', monospace;
    --font-body: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-medium: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
}

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

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

body {
    font-family: var(--font-body);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.7;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Selection */
::selection {
    background: var(--accent-primary);
    color: var(--text-primary);
}

/* Container */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
}

/* Section Base */
.section {
    padding: var(--section-padding) 0;
    position: relative;
}

/* Section Title */
.section-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 600;
    margin-bottom: 60px;
    display: flex;
    align-items: center;
    gap: 16px;
}

.title-number {
    font-family: var(--font-code);
    font-size: 1rem;
    color: var(--accent-primary);
    font-weight: 500;
}

/* ===================================
   Navigation
   =================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 20px 0;
    background: rgba(10, 10, 15, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition-medium);
}

.navbar.scrolled {
    padding: 12px 0;
    background: rgba(10, 10, 15, 0.95);
}

.nav-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: var(--font-display);
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
    letter-spacing: -1px;
}

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

.nav-links {
    display: flex;
    list-style: none;
    gap: 40px;
}

.nav-links a {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition-fast);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-gradient);
    transition: var(--transition-medium);
}

.nav-links a:hover {
    color: var(--text-primary);
}

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

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

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition-fast);
}

/* ===================================
   Hero Section
   =================================== */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 120px 24px 60px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(ellipse at 20% 20%, rgba(99, 102, 241, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 80%, rgba(139, 92, 246, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.hero-content {
    max-width: var(--container-max);
    margin: 0 auto;
    width: 100%;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-text {
    animation: fadeInUp 0.8s ease forwards;
}

.hero-greeting {
    font-family: var(--font-code);
    font-size: 1rem;
    color: var(--accent-primary);
    margin-bottom: 12px;
    letter-spacing: 2px;
}

.hero-name {
    font-family: var(--font-display);
    font-size: clamp(3rem, 8vw, 5rem);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 24px;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--text-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-titles {
    margin-bottom: 24px;
}

.title-split {
    display: flex;
    align-items: center;
    gap: 24px;
    flex-wrap: wrap;
}

.title-left, .title-right {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.title-left .label, .title-right .label {
    font-family: var(--font-code);
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 2px;
}

.title-left {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.title-right {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--accent-primary);
}

.title-divider {
    width: 2px;
    height: 50px;
    background: linear-gradient(to bottom, transparent, var(--accent-primary), transparent);
}

.hero-location {
    font-size: 0.95rem;
    color: var(--accent-primary);
    margin-bottom: 12px;
    font-weight: 500;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 500px;
    margin-bottom: 32px;
}

.hero-cta {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    font-family: var(--font-body);
    font-size: 0.95rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: var(--transition-medium);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--accent-gradient);
    color: white;
    box-shadow: 0 4px 20px var(--accent-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px var(--accent-glow);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-secondary:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

.btn-large {
    padding: 18px 48px;
    font-size: 1rem;
}

/* Hero Visual - Code Window */
.hero-visual {
    animation: fadeInUp 0.8s ease 0.2s forwards;
    opacity: 0;
}

.code-window {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 
        0 20px 60px rgba(0, 0, 0, 0.5),
        0 0 0 1px rgba(255, 255, 255, 0.05);
    transform: perspective(1000px) rotateY(-5deg) rotateX(2deg);
    transition: var(--transition-medium);
}

.code-window:hover {
    transform: perspective(1000px) rotateY(0deg) rotateX(0deg);
}

.window-header {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 16px 20px;
    background: var(--bg-tertiary);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.dot.red { background: #ff5f56; }
.dot.yellow { background: #ffbd2e; }
.dot.green { background: #27ca40; }

.window-title {
    margin-left: auto;
    font-family: var(--font-code);
    font-size: 0.8rem;
    color: var(--text-muted);
}

.window-content {
    padding: 24px;
    overflow-x: auto;
}

.window-content pre {
    margin: 0;
    font-family: var(--font-code);
    font-size: 0.9rem;
    line-height: 1.8;
}

.window-content code {
    color: var(--text-secondary);
}

.window-content .keyword { color: var(--code-keyword); }
.window-content .string { color: var(--code-string); }
.window-content .variable { color: var(--code-variable); }
.window-content .function { color: var(--code-function); }
.window-content .property { color: var(--code-property); }

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    animation: bounce 2s infinite;
}

.scroll-indicator span {
    font-family: var(--font-code);
    font-size: 0.75rem;
    color: var(--text-muted);
    letter-spacing: 2px;
    text-transform: uppercase;
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, var(--accent-primary), transparent);
}

/* ===================================
   About Section
   =================================== */
.about {
    background: var(--bg-secondary);
}

.about-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 60px;
    align-items: start;
}

.about-text p {
    font-size: 1.05rem;
    color: var(--text-secondary);
    margin-bottom: 20px;
}

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

.about-stats {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.stat-item {
    background: var(--bg-card);
    padding: 24px;
    border-radius: var(--radius-md);
    display: flex;
    flex-direction: column;
    gap: 8px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition-medium);
}

.stat-item:hover {
    border-color: var(--accent-primary);
    transform: translateX(8px);
}

.stat-icon {
    font-size: 1.5rem;
}

.stat-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.stat-value {
    font-weight: 600;
    color: var(--text-primary);
}

/* ===================================
   Skills Section
   =================================== */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.skill-category {
    background: var(--bg-secondary);
    padding: 40px;
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.category-title {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 32px;
}

.category-icon {
    font-size: 1.5rem;
}

.skill-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.skill-list li {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.skill-name {
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.skill-bar {
    height: 6px;
    background: var(--bg-tertiary);
    border-radius: 3px;
    overflow: hidden;
}

.skill-progress {
    height: 100%;
    background: var(--accent-gradient);
    border-radius: 3px;
    transition: width 1s ease;
}

.soft-skills {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.soft-skill {
    padding: 10px 20px;
    background: var(--bg-tertiary);
    border-radius: 50px;
    font-size: 0.9rem;
    color: var(--text-secondary);
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition-fast);
}

.soft-skill:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

/* Tech Stack */
.tech-stack {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.tech-item {
    padding: 10px 18px;
    background: var(--accent-gradient);
    border-radius: 8px;
    font-size: 0.9rem;
    color: white;
    font-weight: 500;
    transition: var(--transition-fast);
}

.tech-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px var(--accent-glow);
}

/* ===================================
   Education Section
   =================================== */
.education {
    background: var(--bg-secondary);
}

.timeline {
    position: relative;
    max-width: 800px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--accent-primary), var(--accent-secondary), transparent);
}

.timeline-item {
    position: relative;
    padding-left: 40px;
    padding-bottom: 48px;
}

.timeline-item:last-child {
    padding-bottom: 0;
}

.timeline-marker {
    position: absolute;
    left: -7px;
    top: 0;
    width: 16px;
    height: 16px;
    background: var(--bg-secondary);
    border: 3px solid var(--accent-primary);
    border-radius: 50%;
    transition: var(--transition-fast);
}

.timeline-marker.current {
    background: var(--accent-primary);
    box-shadow: 0 0 20px var(--accent-glow);
}

.timeline-item:hover .timeline-marker {
    transform: scale(1.3);
}

.timeline-content {
    background: var(--bg-card);
    padding: 28px;
    border-radius: var(--radius-md);
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition-medium);
}

.timeline-item:hover .timeline-content {
    border-color: var(--accent-primary);
    transform: translateX(8px);
}

.timeline-date {
    font-family: var(--font-code);
    font-size: 0.8rem;
    color: var(--accent-primary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.timeline-content h3 {
    font-size: 1.2rem;
    font-weight: 600;
    margin: 8px 0;
}

.timeline-institution {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 12px;
}

.timeline-description {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* ===================================
   Contact Section
   =================================== */
.contact {
    text-align: center;
}

.contact-content {
    max-width: 600px;
    margin: 0 auto;
}

.contact-text h3 {
    font-family: var(--font-display);
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.contact-text p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 40px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 40px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px 24px;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    border: 1px solid rgba(255, 255, 255, 0.05);
    text-decoration: none;
    color: inherit;
    transition: var(--transition-medium);
}

.contact-item:hover {
    border-color: var(--accent-primary);
    transform: translateY(-4px);
}

.contact-icon {
    font-size: 1.5rem;
}

.contact-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.contact-value {
    margin-left: auto;
    color: var(--text-primary);
    font-weight: 500;
}

.contact-item.whatsapp:hover {
    border-color: #25D366;
    background: rgba(37, 211, 102, 0.1);
}

.contact-references {
    margin: 30px 0;
    padding: 20px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    border-left: 3px solid var(--accent-primary);
}

.contact-references h4 {
    font-size: 1rem;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.contact-references p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin: 0;
}

.btn-whatsapp {
    background: linear-gradient(135deg, #25D366 0%, #128C7E 100%);
    box-shadow: 0 4px 20px rgba(37, 211, 102, 0.3);
}

.btn-whatsapp:hover {
    box-shadow: 0 8px 30px rgba(37, 211, 102, 0.4);
}

/* ===================================
   Footer
   =================================== */
.footer {
    padding: 40px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-content {
    text-align: left;
}

.footer-text {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

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

.footer-copyright {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 4px;
}

.footer-links {
    display: flex;
    gap: 16px;
}

.footer-link {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-secondary);
    border-radius: 50%;
    color: var(--text-secondary);
    transition: var(--transition-fast);
}

.footer-link:hover {
    background: var(--accent-primary);
    color: white;
    transform: translateY(-4px);
}

/* ===================================
   Projects Section
   =================================== */
.projects {
    background: var(--bg-secondary);
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-top: -40px;
    margin-bottom: 50px;
    max-width: 600px;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.project-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition-medium);
}

.project-card:hover {
    transform: translateY(-8px);
    border-color: var(--accent-primary);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.project-image {
    position: relative;
    height: 200px;
    overflow: hidden;
    background: linear-gradient(135deg, var(--bg-tertiary) 0%, var(--bg-primary) 100%);
}

.project-thumbnail {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top center;
    transition: var(--transition-medium);
}

.project-card:hover .project-thumbnail {
    transform: scale(1.05);
}

.project-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--bg-tertiary) 0%, var(--bg-primary) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
}

.project-icon {
    font-size: 4rem;
    opacity: 0.5;
    transition: var(--transition-medium);
}

.project-card:hover .project-icon {
    opacity: 0.8;
    transform: scale(1.1);
}

.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(99, 102, 241, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    opacity: 0;
    transition: var(--transition-medium);
}

.project-card:hover .project-overlay {
    opacity: 1;
}

.project-link {
    width: 50px;
    height: 50px;
    background: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-primary);
    text-decoration: none;
    transition: var(--transition-fast);
    transform: translateY(20px);
}

.project-card:hover .project-link {
    transform: translateY(0);
}

.project-link:hover {
    background: var(--bg-primary);
    color: white;
    transform: scale(1.1);
}

.project-content {
    padding: 24px;
}

.project-category {
    font-family: var(--font-code);
    font-size: 0.75rem;
    color: var(--accent-primary);
    text-transform: uppercase;
    letter-spacing: 2px;
}

.project-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin: 8px 0 12px;
    color: var(--text-primary);
}

.project-description {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 16px;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.project-tech span {
    padding: 4px 12px;
    background: var(--bg-tertiary);
    border-radius: 20px;
    font-size: 0.8rem;
    color: var(--text-muted);
    font-family: var(--font-code);
}

.project-role {
    display: block;
    font-size: 0.85rem;
    color: var(--accent-primary);
    margin-bottom: 12px;
    font-weight: 500;
}

.projects-cta {
    text-align: center;
    margin-top: 60px;
    padding: 40px;
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.projects-cta p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 20px;
}

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

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

/* ===================================
   Responsive Design
   =================================== */

/* Tablet Grande (max 1024px) */
@media (max-width: 1024px) {
    .projects-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
    }
    
    .skills-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
    }
}

/* Tablet (max 968px) */
@media (max-width: 968px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-text {
        order: 1;
    }
    
    .hero-visual {
        order: 2;
        margin-top: 40px;
    }
    
    .hero-location {
        justify-content: center;
    }
    
    .hero-description {
        margin: 0 auto 32px;
    }
    
    .hero-cta {
        justify-content: center;
    }
    
    .title-split {
        justify-content: center;
    }
    
    .code-window {
        transform: none;
        max-width: 450px;
        margin: 0 auto;
    }
    
    .about-content {
        grid-template-columns: 1fr;
    }
    
    .about-stats {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 16px;
    }
    
    .skills-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    
    .section-subtitle {
        text-align: center;
        margin-left: auto;
        margin-right: auto;
    }
    
    .projects-cta {
        padding: 30px 20px;
    }
}

/* Tablet Pequeña (max 768px) */
@media (max-width: 768px) {
    :root {
        --section-padding: 60px;
    }
    
    .container {
        padding: 0 16px;
    }
    
    .nav-links {
        display: none;
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--bg-primary);
        flex-direction: column;
        padding: 20px;
        gap: 16px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        z-index: 999;
    }
    
    .nav-links.active {
        display: flex;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .hero {
        padding: 100px 16px 40px;
        min-height: auto;
    }
    
    .hero-name {
        font-size: clamp(2rem, 8vw, 3.5rem);
    }
    
    .section-title {
        flex-direction: column;
        gap: 8px;
        font-size: 1.75rem;
    }
    
    .section-subtitle {
        font-size: 1rem;
        margin-top: -30px;
        margin-bottom: 40px;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .project-card {
        max-width: 100%;
    }
    
    .project-image {
        height: 180px;
    }
    
    .about-stats {
        grid-template-columns: 1fr;
        gap: 12px;
    }
    
    .stat-item {
        padding: 16px;
    }
    
    .skill-category {
        padding: 24px 20px;
    }
    
    .tech-stack {
        justify-content: center;
    }
    
    .tech-item {
        padding: 8px 14px;
        font-size: 0.85rem;
    }
    
    .soft-skills {
        justify-content: center;
    }
    
    .timeline::before {
        left: 8px;
    }
    
    .timeline-item {
        padding-left: 32px;
    }
    
    .timeline-marker {
        left: 1px;
        width: 14px;
        height: 14px;
    }
    
    .timeline-content {
        padding: 20px 16px;
    }
    
    .contact-item {
        flex-direction: column;
        text-align: center;
        padding: 16px;
    }
    
    .contact-value {
        margin-left: 0;
        font-size: 0.9rem;
    }
    
    .contact-references {
        padding: 16px;
    }
    
    .btn {
        padding: 12px 24px;
        font-size: 0.9rem;
    }
    
    .btn-large {
        padding: 14px 32px;
        width: 100%;
        text-align: center;
    }
    
    .footer .container {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
    
    .scroll-indicator {
        display: none;
    }
}

/* Móvil (max 480px) */
@media (max-width: 480px) {
    :root {
        --section-padding: 50px;
    }
    
    .logo {
        font-size: 1.5rem;
    }
    
    .hero {
        padding: 90px 12px 30px;
    }
    
    .hero-greeting {
        font-size: 0.9rem;
    }
    
    .hero-name {
        font-size: 2rem;
        margin-bottom: 16px;
    }
    
    .hero-location {
        font-size: 0.85rem;
    }
    
    .hero-description {
        font-size: 0.95rem;
    }
    
    .title-split {
        flex-direction: column;
        gap: 12px;
    }
    
    .title-left, .title-right {
        font-size: 1rem;
    }
    
    .title-divider {
        width: 50px;
        height: 2px;
    }
    
    .hero-cta {
        flex-direction: column;
        gap: 12px;
    }
    
    .hero-cta .btn {
        width: 100%;
    }
    
    .code-window {
        display: none;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    .section-subtitle {
        font-size: 0.9rem;
    }
    
    .about-text p {
        font-size: 0.95rem;
    }
    
    .project-content {
        padding: 16px;
    }
    
    .project-title {
        font-size: 1.1rem;
    }
    
    .project-description {
        font-size: 0.85rem;
    }
    
    .project-role {
        font-size: 0.8rem;
    }
    
    .project-tech {
        gap: 6px;
    }
    
    .project-tech span {
        padding: 3px 8px;
        font-size: 0.7rem;
    }
    
    .skill-category {
        padding: 20px 16px;
    }
    
    .category-title {
        font-size: 1.1rem;
    }
    
    .skill-name {
        font-size: 0.85rem;
    }
    
    .soft-skill {
        padding: 8px 14px;
        font-size: 0.8rem;
    }
    
    .tech-item {
        padding: 6px 12px;
        font-size: 0.8rem;
    }
    
    .timeline-content h3 {
        font-size: 1rem;
    }
    
    .timeline-institution {
        font-size: 0.85rem;
    }
    
    .timeline-description {
        font-size: 0.85rem;
    }
    
    .contact-text h3 {
        font-size: 1.75rem;
    }
    
    .contact-text p {
        font-size: 0.95rem;
    }
    
    .contact-icon {
        font-size: 1.25rem;
    }
    
    .projects-cta {
        padding: 24px 16px;
        margin-top: 40px;
    }
    
    .projects-cta p {
        font-size: 0.95rem;
    }
}

/* Smooth reveal on scroll */
.section {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.section.visible {
    opacity: 1;
    transform: translateY(0);
}