/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --accent-color: #e74c3c;
    --success-color: #27ae60;
    --text-color: #333;
    --text-light: #6c757d;
    --background-color: #f8f9fa;
    --card-background: #ffffff;
    --border-color: #e0e0e0;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.15);
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --transition-speed: 0.3s;
}

/* Dark Mode Colors */
html[data-theme="dark"] {
    --primary-color: #64ffda;
    --secondary-color: #6dd5ed;
    --accent-color: #ff6b9d;
    --text-color: #e4e4e7;
    --text-light: #a1a1aa;
    --background-color: #0f172a;
    --card-background: #1e293b;
    --border-color: #334155;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.5);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--background-color);
    transition: background-color var(--transition-speed), color var(--transition-speed);
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* Dark Mode Toggle Button */
.theme-toggle {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1000;
    background: var(--card-background);
    border: 2px solid var(--border-color);
    border-radius: 50px;
    padding: 10px 15px;
    cursor: pointer;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-speed);
    display: flex;
    align-items: center;
    gap: 5px;
}

.theme-toggle:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-lg);
}

html[data-theme="light"] .moon-icon {
    display: none;
}

html[data-theme="dark"] .sun-icon {
    display: none;
}

/* Header Styles */
header {
    background: var(--gradient-primary);
    color: white;
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-md);
    backdrop-filter: blur(10px);
}

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

.logo {
    font-size: 2rem;
    font-weight: bold;
    background: linear-gradient(45deg, #fff, #64ffda);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: pulse 2s ease-in-out infinite;
}

/* Navigation Styles */
#menu ul {
    list-style: none;
    display: flex;
    justify-content: center;
    gap: 30px;
}

#menu a {
    color: white;
    text-decoration: none;
    font-weight: 600;
    padding: 8px 16px;
    border-radius: 20px;
    transition: all var(--transition-speed);
    position: relative;
}

#menu a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: white;
    transition: all var(--transition-speed);
    transform: translateX(-50%);
}

#menu a:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

#menu a:hover::after {
    width: 80%;
}

/* Hero Section */
.hero {
    min-height: 90vh;
    display: flex;
    align-items: center;
    background: var(--gradient-primary);
    color: white;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="grid" width="100" height="100" patternUnits="userSpaceOnUse"><path d="M 100 0 L 0 0 0 100" fill="none" stroke="rgba(255,255,255,0.05)" stroke-width="1"/></pattern></defs><rect width="100%" height="100%" fill="url(%23grid)" /></svg>');
    animation: gridScroll 20s linear infinite;
}

.hero .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 3rem;
    position: relative;
    z-index: 1;
}

.hero-content {
    flex: 1;
    animation: slideInLeft 1s ease-out;
}

.hero-title {
    font-size: 3rem;
    margin-bottom: 1rem;
    animation: fadeInUp 1s ease-out;
}

.highlight {
    background: linear-gradient(45deg, #64ffda, #ffd700);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: rgba(255, 255, 255, 0.9);
    animation: fadeInUp 1s ease-out 0.2s both;
}

.hero-description {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    color: rgba(255, 255, 255, 0.8);
    animation: fadeInUp 1s ease-out 0.4s both;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    animation: fadeInUp 1s ease-out 0.6s both;
}

.btn {
    padding: 12px 30px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all var(--transition-speed);
    display: inline-block;
}

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

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: transparent;
    color: white;
    border: 2px solid white;
}

.btn-secondary:hover {
    background: white;
    color: var(--primary-color);
    transform: translateY(-3px);
}

.hero-animation {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 2rem;
    animation: slideInRight 1s ease-out;
}

.floating-card {
    font-size: 4rem;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: 2rem;
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
    animation: float 3s ease-in-out infinite;
}

.floating-card:nth-child(1) {
    animation-delay: 0s;
}

.floating-card:nth-child(2) {
    animation-delay: 1s;
}

.floating-card:nth-child(3) {
    animation-delay: 2s;
}

/* Sections */
section {
    margin: 2rem 0;
    background-color: var(--card-background);
    border-radius: 15px;
    box-shadow: var(--shadow-md);
    padding: 3rem 2rem;
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease-out;
}

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

section:not(.hero) {
    margin-top: 4rem;
}

.section-title {
    color: var(--primary-color);
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 3rem;
    position: relative;
    padding-bottom: 1rem;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 4px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

/* About Section */
.about-content {
    display: flex;
    gap: 3rem;
    align-items: center;
}

.about-text {
    flex: 1;
}

.about-text p {
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
    color: var(--text-light);
    line-height: 1.8;
}

.stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.stat-item {
    text-align: center;
    padding: 1.5rem;
    background: var(--gradient-primary);
    border-radius: 15px;
    color: white;
    transition: transform var(--transition-speed);
}

.stat-item:hover {
    transform: translateY(-10px);
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: bold;
    margin-bottom: 0.5rem;
}

.stat-label {
    display: block;
    font-size: 0.9rem;
    opacity: 0.9;
}

/* Skills Section */
.skills-content {
    display: grid;
    gap: 3rem;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-top: 1rem;
}

.skill-card {
    background: var(--card-background);
    border: 2px solid var(--border-color);
    padding: 1.5rem;
    border-radius: 15px;
    transition: all var(--transition-speed);
    text-align: center;
}

.skill-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--secondary-color);
}

.skill-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.skill-name {
    font-weight: 600;
    font-size: 1.1rem;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.skill-bar {
    width: 100%;
    height: 8px;
    background: var(--border-color);
    border-radius: 10px;
    overflow: hidden;
}

.skill-progress {
    height: 100%;
    background: var(--gradient-primary);
    border-radius: 10px;
    transition: width 1s ease-out;
    animation: progressLoad 2s ease-out;
}

.programming-languages h3,
.frameworks-libraries h3,
.tools-technologies h3,
.additional-skills h3,
.certifications h3 {
    color: var(--primary-color);
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
}

/* Certifications */
.certifications,
.frameworks-libraries,
.tools-technologies,
.additional-skills {
    margin-top: 2rem;
}

.certifications h3,
.certifications h4 {
    color: var(--primary-color);
    margin-top: 1.5rem;
    margin-bottom: 1rem;
}

.certification-item,
.job-simulation {
    margin-bottom: 1.5rem;
    padding: 1.5rem;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.05), rgba(118, 75, 162, 0.05));
    border-radius: 10px;
    border-left: 4px solid var(--secondary-color);
    transition: all var(--transition-speed);
}

.certification-item:hover,
.job-simulation:hover {
    transform: translateX(10px);
    box-shadow: var(--shadow-md);
}

.certification-item a,
.job-simulation a {
    color: var(--secondary-color);
    text-decoration: none;
    font-weight: 600;
    transition: color var(--transition-speed);
}

.certification-item a:hover,
.job-simulation a:hover {
    color: var(--accent-color);
    text-decoration: underline;
}

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

.project-card {
    background: var(--card-background);
    border-radius: 15px;
    padding: 2rem;
    border: 2px solid var(--border-color);
    transition: all var(--transition-speed);
    position: relative;
    overflow: hidden;
}

.project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--gradient-secondary);
    transform: scaleX(0);
    transition: transform var(--transition-speed);
}

.project-card:hover::before {
    transform: scaleX(1);
}

.project-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    border-color: var(--secondary-color);
}

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.project-header h3 {
    color: var(--primary-color);
    font-size: 1.4rem;
}

.project-tag {
    background: var(--gradient-primary);
    color: white;
    padding: 0.3rem 1rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.project-description {
    color: var(--text-light);
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

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

.project-link {
    color: var(--secondary-color);
    text-decoration: none;
    font-weight: 600;
    transition: all var(--transition-speed);
}

.project-link:hover {
    color: var(--accent-color);
    transform: translateX(5px);
}

/* Contact Section */
.contact-intro {
    text-align: center;
    font-size: 1.2rem;
    color: var(--text-light);
    margin-bottom: 3rem;
}

.contact-methods {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.contact-card {
    background: var(--gradient-primary);
    color: white;
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    transition: all var(--transition-speed);
}

.contact-card:hover {
    transform: translateY(-10px) scale(1.05);
    box-shadow: var(--shadow-lg);
}

.contact-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.contact-card a {
    color: white;
    text-decoration: none;
    font-weight: 600;
    border-bottom: 2px solid rgba(255, 255, 255, 0.5);
    transition: border-color var(--transition-speed);
}

.contact-card a:hover {
    border-color: white;
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin: 3rem 0;
    flex-wrap: wrap;
}

.social-icon {
    transition: all var(--transition-speed);
    display: inline-block;
}

.social-links .icon {
    width: 50px;
    height: 50px;
    padding: 10px;
    background: var(--card-background);
    border-radius: 50%;
    border: 2px solid var(--border-color);
    transition: all var(--transition-speed);
}

.social-icon:hover {
    transform: translateY(-5px) rotate(5deg);
}

.social-icon:hover .icon {
    border-color: var(--secondary-color);
    box-shadow: var(--shadow-md);
}

.contact-qr {
    text-align: center;
    margin-top: 3rem;
    padding: 2rem;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.05), rgba(118, 75, 162, 0.05));
    border-radius: 15px;
}

.contact-qr p {
    font-size: 1.1rem;
    color: var(--text-color);
    margin-bottom: 1rem;
}

.contact-qr img {
    max-width: 250px;
    border-radius: 15px;
    box-shadow: var(--shadow-lg);
    transition: transform var(--transition-speed);
}

.contact-qr img:hover {
    transform: scale(1.05);
}

.whatsapp-contact {
    text-align: center;
    margin-top: 2rem;
}

.whatsapp-contact img {
    transition: transform var(--transition-speed);
}

.whatsapp-contact img:hover {
    transform: scale(1.1);
}

/* Footer */
footer {
    background: var(--gradient-primary);
    color: white;
    text-align: center;
    padding: 2rem 0;
    margin-top: 4rem;
    position: relative;
}

.footer-content {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.footer-tagline {
    font-size: 0.9rem;
    opacity: 0.8;
}

/* Scroll to Top Button */
.scroll-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background: var(--gradient-primary);
    color: white;
    border: none;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    font-size: 1.5rem;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-speed);
    z-index: 999;
}

.scroll-top.visible {
    opacity: 1;
    visibility: visible;
}

.scroll-top:hover {
    transform: translateY(-5px);
}

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

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-20px);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.7;
    }
}

@keyframes progressLoad {
    from {
        width: 0;
    }
}

@keyframes gridScroll {
    from {
        background-position: 0 0;
    }
    to {
        background-position: 100px 100px;
    }
}

/* Responsive Design */
@media screen and (max-width: 768px) {
    .hero .container {
        flex-direction: column;
        text-align: center;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1.2rem;
    }

    .hero-animation {
        display: none;
    }

    .hero-buttons {
        justify-content: center;
    }

    header .container {
        flex-direction: column;
        gap: 1rem;
    }

    .skills-content {
        grid-template-columns: 1fr;
    }

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

    #menu ul {
        flex-direction: column;
        align-items: center;
        gap: 10px;
    }

    .social-links {
        flex-wrap: wrap;
    }

    .about-content {
        flex-direction: column;
    }

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

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

    .contact-methods {
        grid-template-columns: 1fr;
    }

    .theme-toggle {
        top: 10px;
        right: 10px;
    }

    .scroll-top {
        bottom: 20px;
        right: 20px;
        width: 45px;
        height: 45px;
    }

    .section-title {
        font-size: 2rem;
    }
}

@media screen and (max-width: 480px) {
    .hero-title {
        font-size: 1.5rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .btn {
        padding: 10px 20px;
        font-size: 0.9rem;
    }

    .logo {
        font-size: 1.5rem;
    }

    section {
        padding: 2rem 1rem;
    }
}

/* Print Styles */
@media print {
    body {
        font-size: 12pt;
        background: white;
    }

    header, footer {
        background: none;
        color: black;
    }

    .social-links,
    .theme-toggle,
    .scroll-top,
    .hero-animation {
        display: none;
    }

    section {
        page-break-inside: avoid;
        box-shadow: none;
        border: 1px solid #ddd;
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus States for Accessibility */
a:focus,
button:focus {
    outline: 3px solid var(--secondary-color);
    outline-offset: 2px;
}

/* Selection Colors */
::selection {
    background: var(--secondary-color);
    color: white;
}