/* ================================================
   Variables CSS
   ================================================ */
:root {
    /* Colores principales */
    --primary-color: #2c3e50;
    --secondary-color: #d4a574;
    --accent-color: #c7956d;
    --text-dark: #1a1a1a;
    --text-light: #666666;
    --text-muted: #999999;
    --background-light: #fafafa;
    --background-white: #ffffff;
    --border-color: #e5e5e5;
    
    /* Tipografía */
    --font-heading: 'Playfair Display', serif;
    --font-body: 'Lato', sans-serif;
    
    /* Espaciado */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    /* Sombras */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.16);
    
    /* Transiciones */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Border radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
}

/* ================================================
   Reset y Base
   ================================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-body);
    color: var(--text-dark);
    line-height: 1.7;
    background-color: var(--background-white);
    overflow-x: hidden;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    text-decoration: none;
    color: inherit;
    transition: all var(--transition-normal);
}

ul {
    list-style: none;
}

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

/* ================================================
   Navegación
   ================================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: all var(--transition-normal);
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-sm);
    padding-bottom: var(--spacing-sm);
}

.nav-brand {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.nav-toggle span {
    width: 25px;
    height: 2px;
    background-color: var(--primary-color);
    margin: 3px 0;
    transition: all var(--transition-fast);
}

.nav-menu {
    display: flex;
    gap: var(--spacing-md);
}

.nav-link {
    position: relative;
    padding: 0.5rem 0;
    color: var(--text-dark);
    font-weight: 400;
    transition: color var(--transition-fast);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--secondary-color);
    transition: width var(--transition-normal);
}

.nav-link:hover {
    color: var(--secondary-color);
}

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

/* ================================================
   Hero Section
   ================================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding-top: 80px;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    opacity: 0.3;
    z-index: -1;
}

.hero-background::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(212, 165, 116, 0.15) 0%, transparent 70%);
    border-radius: 50%;
    animation: float 20s ease-in-out infinite;
}

.hero-background::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(44, 62, 80, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    animation: float 15s ease-in-out infinite reverse;
}

@keyframes float {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    50% {
        transform: translate(30px, -30px) scale(1.1);
    }
}

.hero-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    animation: fadeInUp 1s ease-out;
}

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

.hero-profile {
    flex: 0 0 auto;
}

.profile-image-wrapper {
    position: relative;
    width: 350px;
    height: 350px;
    animation: fadeIn 1s ease-out 0.3s backwards;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.profile-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
    border: 6px solid var(--background-white);
    box-shadow: var(--shadow-lg);
    position: relative;
    z-index: 2;
}

.profile-border {
    position: absolute;
    top: -15px;
    left: -15px;
    right: -15px;
    bottom: -15px;
    border: 3px solid var(--secondary-color);
    border-radius: 50%;
    z-index: 1;
    animation: rotate 20s linear infinite;
}

@keyframes rotate {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

.hero-text {
    flex: 1;
    animation: fadeInRight 1s ease-out 0.5s backwards;
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.hero-title {
    font-family: var(--font-heading);
    font-size: 4rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
    line-height: 1.2;
}

.title-line {
    display: inline-block;
    position: relative;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--secondary-color);
    font-weight: 300;
    margin-bottom: var(--spacing-sm);
    letter-spacing: 2px;
    text-transform: uppercase;
}

.hero-description {
    font-size: 1.125rem;
    color: var(--text-light);
    margin-bottom: var(--spacing-md);
    max-width: 500px;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-sm);
}

.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-muted);
    font-size: 0.875rem;
    animation: fadeIn 1s ease-out 1.5s backwards;
}

.scroll-arrow {
    width: 24px;
    height: 24px;
    border-left: 2px solid var(--text-muted);
    border-bottom: 2px solid var(--text-muted);
    transform: rotate(-45deg);
    animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {
    0%, 100% {
        transform: rotate(-45deg) translateY(0);
    }
    50% {
        transform: rotate(-45deg) translateY(10px);
    }
}

/* ================================================
   Botones
   ================================================ */
.btn {
    display: inline-block;
    padding: 1rem 2rem;
    font-weight: 600;
    text-align: center;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-normal);
    border: none;
    font-size: 1rem;
    font-family: var(--font-body);
}

.btn-primary {
    background-color: var(--primary-color);
    color: var(--background-white);
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    background-color: #1a2530;
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

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

.btn-secondary:hover {
    background-color: var(--primary-color);
    color: var(--background-white);
}

.btn-block {
    width: 100%;
}

/* ================================================
   Secciones
   ================================================ */
.section {
    padding: var(--spacing-xl) 0;
    position: relative;
}

.section:nth-child(even) {
    background-color: var(--background-light);
}

.section-title {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: var(--spacing-lg);
    text-align: center;
    position: relative;
    display: inline-block;
    left: 50%;
    transform: translateX(-50%);
}

.title-decorator {
    position: absolute;
    left: -60px;
    top: 50%;
    transform: translateY(-50%);
    width: 40px;
    height: 3px;
    background-color: var(--secondary-color);
}

.section-title::after {
    content: '';
    position: absolute;
    right: -60px;
    top: 50%;
    transform: translateY(-50%);
    width: 40px;
    height: 3px;
    background-color: var(--secondary-color);
}

/* ================================================
   Sobre Mí
   ================================================ */
.sobre-mi-content {
    max-width: 900px;
    margin: 0 auto;
}

.sobre-mi-text {
    background-color: var(--background-white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.lead {
    font-size: 1.25rem;
    color: var(--text-dark);
    font-weight: 400;
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
}

.sobre-mi-text p {
    margin-bottom: var(--spacing-sm);
    color: var(--text-light);
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
}

.info-item {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.info-label {
    font-size: 0.875rem;
    color: var(--text-muted);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.info-value {
    font-size: 1.125rem;
    color: var(--text-dark);
    font-weight: 600;
}

/* ================================================
   Habilidades
   ================================================ */
.habilidades-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
    max-width: 1000px;
    margin: 0 auto;
}

.habilidad-card {
    background-color: var(--background-white);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
}

.habilidad-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.habilidad-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-sm);
}

.habilidad-nombre {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-dark);
}

.habilidad-porcentaje {
    font-size: 1rem;
    font-weight: 700;
    color: var(--secondary-color);
}

.habilidad-bar {
    height: 8px;
    background-color: var(--border-color);
    border-radius: 10px;
    overflow: hidden;
}

.habilidad-progress {
    height: 100%;
    background: linear-gradient(90deg, var(--secondary-color), var(--accent-color));
    border-radius: 10px;
    width: 0;
    transition: width 1.5s ease-out;
}

.habilidad-card.visible .habilidad-progress {
    width: var(--progress-width);
}

/* ================================================
   Proyectos Destacados
   ================================================ */
.proyectos-destacados {
    background-color: var(--background-white);
}

.section-description {
    text-align: center;
    color: var(--text-light);
    font-size: 1.125rem;
    max-width: 700px;
    margin: -2rem auto 3rem;
}

.proyectos-principales-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
    max-width: 1400px;
    margin: 0 auto;
}

.proyecto-principal-card {
    background-color: var(--background-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    opacity: 0;
    transform: translateY(30px);
    display: flex;
    flex-direction: column;
}

.proyecto-principal-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.proyecto-principal-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.proyecto-imagen-wrapper {
    position: relative;
    width: 100%;
    height: 300px;
    overflow: hidden;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
}

.proyecto-imagen {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.proyecto-principal-card:hover .proyecto-imagen {
    transform: scale(1.08);
}

.proyecto-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(
        to bottom,
        transparent 0%,
        rgba(44, 62, 80, 0.7) 60%,
        rgba(44, 62, 80, 0.95) 100%
    );
    opacity: 0;
    transition: opacity var(--transition-normal);
    display: flex;
    align-items: flex-end;
    padding: var(--spacing-md);
}

.proyecto-principal-card:hover .proyecto-overlay {
    opacity: 1;
}

.proyecto-overlay-content {
    color: var(--background-white);
    transform: translateY(20px);
    transition: transform var(--transition-normal);
}

.proyecto-principal-card:hover .proyecto-overlay-content {
    transform: translateY(0);
}

.proyecto-overlay-titulo {
    font-family: var(--font-heading);
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--background-white);
}

.proyecto-overlay-descripcion {
    font-size: 1rem;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.95);
}

.proyecto-info {
    padding: var(--spacing-md);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.proyecto-titulo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.75rem;
}

.proyecto-descripcion {
    color: var(--text-light);
    margin-bottom: var(--spacing-sm);
    line-height: 1.6;
}

.proyecto-tecnologias {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: auto;
    padding-top: var(--spacing-sm);
}

.tech-tag {
    display: inline-block;
    padding: 0.375rem 0.875rem;
    background: linear-gradient(135deg, var(--secondary-color), var(--accent-color));
    color: var(--background-white);
    font-size: 0.8125rem;
    font-weight: 600;
    border-radius: 20px;
    transition: all var(--transition-fast);
}

.tech-tag:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(212, 165, 116, 0.3);
}

/* Placeholder para imágenes no cargadas */
.proyecto-imagen-wrapper::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 4rem;
    color: var(--border-color);
    z-index: 1;
}

.proyecto-imagen[src*=".jpg"],
.proyecto-imagen[src*=".png"],
.proyecto-imagen[src*=".webp"] {
    position: relative;
    z-index: 2;
}

/* ================================================
   Experiencia
   ================================================ */
.timeline {
    position: relative;
    max-width: 900px;
    margin: 0 auto var(--spacing-xl);
    padding-left: 40px;
}

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

.timeline-item {
    position: relative;
    margin-bottom: var(--spacing-lg);
    opacity: 0;
    transform: translateX(-30px);
    transition: all var(--transition-slow);
}

.timeline-item.visible {
    opacity: 1;
    transform: translateX(0);
}

.timeline-marker {
    position: absolute;
    left: -45px;
    top: 0;
    width: 12px;
    height: 12px;
    background-color: var(--secondary-color);
    border: 3px solid var(--background-white);
    border-radius: 50%;
    box-shadow: 0 0 0 4px var(--border-color);
}

.timeline-content {
    background-color: var(--background-white);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
}

.timeline-content:hover {
    box-shadow: var(--shadow-md);
}

.timeline-date {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background-color: var(--secondary-color);
    color: var(--background-white);
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-sm);
}

.timeline-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
}

.timeline-empresa {
    font-size: 1.125rem;
    color: var(--text-light);
    margin-bottom: var(--spacing-sm);
    font-style: italic;
}

.timeline-actividades {
    list-style: disc;
    padding-left: var(--spacing-md);
}

.timeline-actividades li {
    color: var(--text-light);
    margin-bottom: 0.5rem;
}

.subsection-title {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
    text-align: center;
}

.proyectos-colaborativos {
    margin-top: var(--spacing-xl);
}

.proyectos-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
    max-width: 900px;
    margin: 0 auto;
}

.proyecto-card {
    background-color: var(--background-white);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    border-left: 4px solid var(--secondary-color);
}

.proyecto-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.proyecto-nombre {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
}

.proyecto-descripcion {
    color: var(--text-light);
    line-height: 1.6;
}

/* ================================================
   Formación
   ================================================ */
.formacion-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
    max-width: 1100px;
    margin: 0 auto;
}

.formacion-card {
    background-color: var(--background-white);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    text-align: center;
}

.formacion-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.formacion-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
}

.formacion-curso {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: var(--spacing-sm);
    line-height: 1.4;
}

.formacion-instructor {
    font-size: 0.9375rem;
    color: var(--text-light);
    margin-bottom: 0.25rem;
}

.formacion-plataforma {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background-color: var(--border-color);
    color: var(--text-dark);
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    margin-top: 0.5rem;
}

/* ================================================
   Contacto
   ================================================ */
.contacto-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    max-width: 1100px;
    margin: 0 auto;
}

.contacto-info {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.contacto-subtitle {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
}

.contacto-text {
    color: var(--text-light);
    margin-bottom: var(--spacing-lg);
    line-height: 1.8;
}

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

.contacto-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    background-color: var(--background-white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
}

.contacto-item:hover {
    box-shadow: var(--shadow-md);
    transform: translateX(5px);
}

.contacto-icon {
    font-size: 2rem;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--background-light);
    border-radius: var(--radius-md);
}

.contacto-detalle {
    display: flex;
    flex-direction: column;
}

.contacto-label {
    font-size: 0.875rem;
    color: var(--text-muted);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 0.25rem;
}

.contacto-link {
    font-size: 1.125rem;
    color: var(--text-dark);
    font-weight: 600;
}

.contacto-link:hover {
    color: var(--secondary-color);
}

.contacto-form-wrapper {
    background-color: var(--background-white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

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

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

.form-label {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
}

.form-input,
.form-textarea {
    padding: 0.875rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-family: var(--font-body);
    font-size: 1rem;
    transition: all var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 3px rgba(212, 165, 116, 0.1);
}

.form-textarea {
    resize: vertical;
    min-height: 120px;
}

/* ================================================
   Footer
   ================================================ */
.footer {
    background-color: var(--primary-color);
    color: var(--background-white);
    padding: var(--spacing-lg) 0;
    text-align: center;
}

.footer-text {
    font-size: 1rem;
    margin-bottom: 0.5rem;
}

.footer-subtext {
    font-size: 0.875rem;
    opacity: 0.8;
}

/* ================================================
   Media Queries
   ================================================ */
@media (max-width: 968px) {
    .hero-content {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-lg);
    }
    
    .profile-image-wrapper {
        width: 280px;
        height: 280px;
    }
    
    .hero-title {
        font-size: 3rem;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .contacto-content {
        grid-template-columns: 1fr;
    }
    
    /* Grid de proyectos: 2 columnas en tablet */
    .proyectos-principales-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-md);
    }
}

@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        flex-direction: column;
        background-color: var(--background-white);
        width: 100%;
        padding: var(--spacing-md);
        box-shadow: var(--shadow-md);
        transition: left var(--transition-normal);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .profile-image-wrapper {
        width: 220px;
        height: 220px;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .title-decorator,
    .section-title::after {
        display: none;
    }
    
    .timeline {
        padding-left: 30px;
    }
    
    .timeline-marker {
        left: -36px;
    }
    
    /* Mantener 2 columnas en tablets pequeños */
    .proyectos-principales-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-sm);
    }
    
    .proyecto-imagen-wrapper {
        height: 220px;
    }
}

@media (max-width: 640px) {
    /* Grid de proyectos: 1 columna en móvil */
    .proyectos-principales-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .proyecto-imagen-wrapper {
        height: 250px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1.125rem;
    }
    
    .profile-image-wrapper {
        width: 180px;
        height: 180px;
    }
    
    .btn {
        padding: 0.875rem 1.5rem;
        font-size: 0.9375rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }
    
    .hero-buttons .btn {
        width: 100%;
    }
    
    /* Mantener 1 columna en móviles pequeños */
    .proyectos-principales-grid {
        grid-template-columns: 1fr;
    }
    
    .proyecto-imagen-wrapper {
        height: 200px;
    }
    
    .proyecto-titulo {
        font-size: 1.25rem;
    }
}

/* ================================================
   Animaciones de scroll
   ================================================ */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease-out;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ================================================
   Utilidades
   ================================================ */
.text-center {
    text-align: center;
}

.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }


* ================================================
   Formulario
   ================================================ */

.input-error {
  border: 2px solid #e74c3c !important;
}

.input-ok {
  border: 2px solid #2ecc71 !important;
}

.mensaje-error {
  color: #e74c3c;
  font-size: 13px;
  margin-top: 5px;
}