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

:root {
    --color-primary: #3b82f6;
    --color-bg: #ffffff;
    --color-fg: #1e293b;
    --color-muted-fg: #64748b;
    --color-card: #fafafa;
    --color-border: #e2e8f0;
    --color-accent: #f1f5f9;
    --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

.dark {
    --color-bg: #0f172a;
    --color-fg: #f8fafc;
    --color-muted-fg: #94a3b8;
    --color-card: #1e293b;
    --color-border: #334155;
    --color-accent: #1e293b;
}

body {
    font-family: var(--font-sans);
    background-color: var(--color-bg);
    color: var(--color-fg);
    line-height: 1.6;
    transition: background-color 0.3s, color 0.3s;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.section {
    padding: 5rem 0;
}

.section-alt {
    background-color: var(--color-accent);
}

.section-header {
    margin-bottom: 3rem;
}

.section-header h2 {
    font-size: 2.25rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.underline {
    height: 4px;
    width: 5rem;
    background-color: var(--color-primary);
    border-radius: 9999px;
}

.section-description {
    color: var(--color-muted-fg);
    font-size: 1.125rem;
    margin-top: 1rem;
}

/* Theme Toggle */
.theme-toggle {
    position: fixed;
    top: 1rem;
    right: 1rem;
    z-index: 1000;
    background-color: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: 0.5rem;
    padding: 0.75rem;
    cursor: pointer;
    box-shadow: var(--shadow);
    transition: all 0.3s;
}

.theme-toggle:hover {
    transform: scale(1.05);
}

.hidden {
    display: none;
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 5rem 1.5rem;
}

.hero-gradient {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.05) 0%, var(--color-bg) 50%, rgba(147, 197, 253, 0.05) 100%);
    z-index: -1;
}

.hero-content {
    max-width: 56rem;
    text-align: center;
}

.profile-image {
    width: 10rem;
    height: 10rem;
    border-radius: 9999px;
    object-fit: cover;
    margin: 0 auto 2rem;
    box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.1), var(--shadow-lg);
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    letter-spacing: -0.025em;
    margin-bottom: 1rem;
}

.hero-subtitle {
    font-size: 1.875rem;
    color: var(--color-muted-fg);
    font-weight: 500;
    margin-bottom: 2rem;
}

.hero-bio {
    font-size: 1.125rem;
    line-height: 1.75;
    color: var(--color-fg);
    opacity: 0.8;
    max-width: 42rem;
    margin: 0 auto 2rem;
}

.hero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: center;
    margin-top: 2rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 0.5rem;
    text-decoration: none;
    transition: all 0.3s;
    cursor: pointer;
    border: none;
    font-family: inherit;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

.btn-outline:hover {
    background-color: var(--color-accent);
    transform: translateY(-2px);
}

.btn-block {
    width: 100%;
}

.scroll-indicator {
    margin-top: 3rem;
    animation: bounce 2s infinite;
}

.scroll-indicator svg {
    color: var(--color-muted-fg);
}

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

/* About Section */
.about-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
    align-items: start;
}

.about-text {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.about-text p {
    font-size: 1.125rem;
    line-height: 1.75;
    color: var(--color-fg);
    opacity: 0.9;
}

.stats-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

.stat-card {
    background-color: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: 0.75rem;
    padding: 1.5rem;
    display: flex;
    gap: 1rem;
    align-items: start;
    transition: all 0.3s;
    box-shadow: var(--shadow);
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.stat-icon {
    padding: 0.75rem;
    background-color: var(--color-accent);
    border-radius: 0.5rem;
}

.stat-icon.briefcase svg {
    color: var(--color-primary);
}

.stat-icon.code svg {
    color: #10b981;
}

.stat-icon.award svg {
    color: #f59e0b;
}

.stat-value {
    font-size: 1.875rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--color-muted-fg);
}

/* Skills Section */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.skill-category-card {
    background-color: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: 0.75rem;
    padding: 1.5rem;
    box-shadow: var(--shadow);
}

.skill-category-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.skill-tag {
    font-size: 0.875rem;
    font-weight: 500;
    padding: 0.5rem 0.75rem;
    background-color: var(--color-accent);
    border: 1px solid var(--color-border);
    border-radius: 9999px;
}

/* Experience Section */
.experience-list {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.experience-card {
    background-color: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: 0.75rem;
    padding: 2rem;
    box-shadow: var(--shadow);
    transition: all 0.3s;
}

.experience-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.experience-header {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.experience-title-group {
    display: flex;
    gap: 1rem;
}

.company-icon {
    padding: 0.75rem;
    background-color: rgba(59, 130, 246, 0.1);
    border-radius: 0.5rem;
    height: fit-content;
}

.company-icon svg {
    color: var(--color-primary);
}

.experience-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.role {
    font-size: 1.125rem;
    color: var(--color-muted-fg);
}

.experience-period {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--color-muted-fg);
    font-size: 0.875rem;
    font-weight: 500;
}

.achievements {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.achievements li {
    display: flex;
    gap: 0.75rem;
    line-height: 1.75;
}

.achievements li::before {
    content: "✓";
    color: var(--color-primary);
    font-weight: bold;
    flex-shrink: 0;
}

.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tech-tag {
    font-size: 0.75rem;
    padding: 0.25rem 0.75rem;
    background-color: transparent;
    border: 1px solid var(--color-border);
    border-radius: 0.25rem;
}

/* Projects Section */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.project-card {
    background-color: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: 0.75rem;
    padding: 1.5rem;
    box-shadow: var(--shadow);
    transition: all 0.3s;
    display: flex;
    flex-direction: column;
}

.project-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.project-icon {
    width: 3rem;
    height: 3rem;
    background-color: rgba(59, 130, 246, 0.1);
    border-radius: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
}

.project-icon svg {
    color: var(--color-primary);
}

.project-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.project-card > p {
    color: var(--color-fg);
    opacity: 0.8;
    line-height: 1.75;
    margin-bottom: 1rem;
    flex-grow: 1;
}

.project-impact {
    margin-top: 1rem;
    padding: 0.75rem;
    background-color: rgba(59, 130, 246, 0.05);
    border-radius: 0.5rem;
    font-size: 0.875rem;
    font-weight: 500;
}

/* Contact Section */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
}

.contact-form-wrapper {
    background-color: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: 0.75rem;
    padding: 2rem;
    box-shadow: var(--shadow);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-size: 0.875rem;
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    padding: 0.75rem 1rem;
    border: 2px solid var(--color-border);
    border-radius: 0.5rem;
    font-size: 1rem;
    font-family: inherit;
    background-color: var(--color-bg);
    color: var(--color-fg);
    transition: all 0.3s;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

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

.form-note {
    font-size: 0.875rem;
    color: var(--color-muted-fg);
    text-align: center;
    margin-top: -0.5rem;
}

.contact-info-wrapper {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contact-info-cards {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.contact-info-card {
    background-color: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: 0.5rem;
    padding: 1rem;
    display: flex;
    gap: 1rem;
    align-items: start;
    text-decoration: none;
    color: inherit;
    transition: all 0.3s;
}

.contact-info-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.contact-info-icon {
    padding: 0.5rem;
    background-color: rgba(59, 130, 246, 0.1);
    border-radius: 0.5rem;
}

.contact-info-icon svg {
    color: var(--color-primary);
}

.contact-label {
    font-size: 0.875rem;
    color: var(--color-muted-fg);
}

.contact-value {
    font-weight: 500;
}

.social-card {
    background-color: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: 0.75rem;
    padding: 1.5rem;
}

.social-card h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-link {
    padding: 0.75rem;
    background-color: var(--color-accent);
    border-radius: 0.5rem;
    transition: all 0.3s;
    color: var(--color-fg);
}

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

.social-link.whatsapp:hover {
    color: #25D366;
}

.social-link.linkedin:hover {
    color: #0A66C2;
}

/* Footer */
.footer {
    border-top: 1px solid var(--color-border);
    padding: 2rem 0;
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    text-align: center;
}

.footer-copyright,
.footer-tech {
    font-size: 0.875rem;
    color: var(--color-muted-fg);
}

.footer-social {
    display: flex;
    gap: 1rem;
}

.footer-social a {
    color: var(--color-muted-fg);
    transition: color 0.3s;
}

.footer-social a:hover {
    color: var(--color-fg);
}

/* Responsive */
@media (min-width: 768px) {
    .hero-title {
        font-size: 3.75rem;
    }

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

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .contact-grid {
        grid-template-columns: 3fr 2fr;
    }

    .experience-header {
        flex-direction: row;
        justify-content: space-between;
        align-items: start;
    }

    .footer-content {
        flex-direction: row;
        justify-content: space-between;
    }
}

@media (min-width: 1024px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
}