/* Modern Professional Portfolio CSS */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@100;200;300;400;500;600;700;800;900&family=JetBrains+Mono:ital,wght@0,100..800;1,100..800&display=swap');

/* CSS Variables */
:root {
    /* Colors */
    --primary-color: #00f5ff;
    --secondary-color: #0070f3;
    --accent-color: #7c3aed;
    --text-primary: #ffffff;
    --text-secondary: #d1d5db;
    --text-muted: #9ca3af;
    --background-primary: #0a0a0a;
    --background-secondary: #16161e;
    --background-card: #1e1e2e;
    --border-color: #313244;
    --gradient-primary: linear-gradient(135deg, #00f5ff 0%, #0070f3 100%);
    --gradient-secondary: linear-gradient(135deg, #7c3aed 0%, #ec4899 100%);
    --gradient-dark: linear-gradient(135deg, #0a0a0a 0%, #111111 100%);
    
    /* Typography */
    --font-primary: 'Inter', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    
    /* Spacing */
    --container-max-width: 1200px;
    --section-padding: 100px 0;
    --card-padding: 2rem;
    
    /* Animations */
    --transition-fast: 0.2s ease;
    --transition-smooth: 0.3s ease;
    --transition-slow: 0.6s ease;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --shadow-glow: 0 0 20px rgba(0, 245, 255, 0.3);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    background: var(--background-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 2rem;
}

/* Particles Background - Covers entire page */
#particles-js {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1;
    pointer-events: none;
}

/* Make canvas responsive and ensure it covers everything */
#particles-js canvas {
    width: 100% !important;
    height: 100% !important;
}

/* Ensure all sections allow particles to show through */
section {
    padding: var(--section-padding);
    position: relative;
    z-index: 1;
    background: transparent;
}

/* About section - remove background to show particles */
.about {
    background: rgba(17, 17, 17, 0.2);
    backdrop-filter: blur(1px);
}

/* Projects section - remove background to show particles */
.projects {
    background: rgba(17, 17, 17, 0.2);
    backdrop-filter: blur(1px);
}

/* Contact section - remove background to show particles */
.contact {
    background: rgba(17, 17, 17, 0.2);
    backdrop-filter: blur(1px);
}

/* Skills section - transparent background */
.skills {
    background: rgba(10, 10, 10, 0.2);
    backdrop-filter: blur(1px);
}

/* Experience section - transparent background */
.experience {
    background: rgba(10, 10, 10, 0.2);
    backdrop-filter: blur(1px);
}

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

.navbar.scrolled {
    background: rgba(10, 10, 10, 0.95);
    box-shadow: var(--shadow-lg);
}

.nav-container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.nav-logo .logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    font-family: var(--font-mono);
}

.logo-accent {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition-fast);
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: var(--transition-smooth);
}

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

/* Mobile Menu */
.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.bar {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    transition: var(--transition-smooth);
}

.hamburger.active .bar:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.active .bar:nth-child(2) {
    opacity: 0;
}

.hamburger.active .bar:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: var(--section-padding);
    position: relative;
}

.hero-container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 2rem;
    width: 100%;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-text {
    z-index: 2;
}

.greeting {
    margin-bottom: 1rem;
}

.greeting-text {
    font-size: 1.25rem;
    color: var(--primary-color);
    font-weight: 500;
    font-family: var(--font-mono);
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1rem;
}

.hero-name {
    display: block;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-surname {
    display: block;
    color: var(--text-primary);
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    font-family: var(--font-mono);
}

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

.cursor {
    animation: blink 1s infinite;
}

@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}

.hero-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
    max-width: 500px;
    line-height: 1.7;
    font-weight: 400;
    opacity: 0.95;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    border: none;
    border-radius: 50px;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition-smooth);
    cursor: pointer;
    font-family: var(--font-primary);
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--background-primary);
    box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 30px rgba(0, 245, 255, 0.5);
}

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

.btn-secondary:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateY(-2px);
}

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

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    background: var(--background-card);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition-smooth);
    backdrop-filter: blur(10px);
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.2);
}

.social-link:hover {
    color: var(--primary-color);
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 245, 255, 0.3);
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.image-container {
    position: relative;
    width: 400px;
    height: 400px;
}

.profile-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
    border: 4px solid var(--primary-color);
    box-shadow: var(--shadow-glow);
}

.image-glow {
    position: absolute;
    top: -20px;
    left: -20px;
    right: -20px;
    bottom: -20px;
    background: var(--gradient-primary);
    border-radius: 50%;
    opacity: 0.3;
    filter: blur(20px);
    z-index: -1;
    animation: pulse 3s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 0.3; }
    50% { transform: scale(1.05); opacity: 0.5; }
}

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-muted);
    animation: bounce 2s infinite;
}

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

/* Section Styles */
section {
    padding: var(--section-padding);
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    margin-bottom: 1rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
    font-weight: 400;
    opacity: 0.95;
}

/* About Section - Semi-transparent to show particles */
.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 4rem;
    align-items: start;
}

.about-card {
    background: var(--background-card);
    padding: var(--card-padding);
    border-radius: 20px;
    border: 1px solid var(--border-color);
    margin-bottom: 2rem;
    transition: var(--transition-smooth);
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.about-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
    box-shadow: 0 8px 25px rgba(0, 245, 255, 0.15);
}

.card-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    color: var(--background-primary);
    font-size: 1.5rem;
}

.about-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.about-card p {
    color: var(--text-secondary);
    line-height: 1.7;
    font-weight: 400;
    opacity: 0.95;
}

.about-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.stat-card {
    background: var(--background-card);
    padding: 2rem 1.5rem;
    border-radius: 15px;
    border: 1px solid var(--border-color);
    text-align: center;
    transition: var(--transition-smooth);
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.stat-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 245, 255, 0.15);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: block;
    margin-bottom: 0.5rem;
}

.stat-label {
    color: var(--text-secondary);
    font-weight: 500;
    opacity: 0.9;
}

/* Experience Section - Semi-transparent to show particles */
.timeline {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
    padding: 3rem 0;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--gradient-primary);
    transform: translateX(-50%);
}

.timeline-item {
    position: relative;
    margin-bottom: 5rem;
    display: flex;
    align-items: flex-start;
    padding-top: 2rem;
}

.timeline-item:nth-child(odd) {
    flex-direction: row-reverse;
}

.timeline-item:nth-child(odd) .timeline-content {
    text-align: right;
    margin-right: 3rem;
    margin-left: 0;
}

.timeline-item:nth-child(even) .timeline-content {
    margin-left: 3rem;
    margin-right: 0;
}

.timeline-date {
    position: absolute;
    left: 50%;
    top: 0;
    transform: translateX(-50%);
    background: var(--background-card);
    padding: 0.75rem 1.5rem;
    border-radius: 25px;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
    font-weight: 600;
    font-size: 0.875rem;
    font-family: var(--font-mono);
    z-index: 10;
    white-space: nowrap;
    min-width: 140px;
    text-align: center;
    margin-top: -15px;
}

.timeline-content {
    background: var(--background-card);
    padding: var(--card-padding);
    border-radius: 20px;
    border: 1px solid var(--border-color);
    width: calc(50% - 2rem);
    transition: var(--transition-smooth);
    position: relative;
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
    margin-top: 1rem;
}

.timeline-content:hover {
    border-color: var(--primary-color);
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 245, 255, 0.15);
}

.timeline-company {
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.timeline-position {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.timeline-location {
    color: var(--text-muted);
    margin-bottom: 1rem;
    font-weight: 500;
    opacity: 0.9;
}

.timeline-achievements {
    list-style: none;
    margin-bottom: 1.5rem;
}

.timeline-achievements li {
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    padding-left: 1rem;
    position: relative;
    font-weight: 400;
    opacity: 0.95;
}

.timeline-achievements li::before {
    content: '▶';
    position: absolute;
    left: 0;
    color: var(--primary-color);
}

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

.tech-tag {
    background: var(--gradient-primary);
    color: var(--background-primary);
    padding: 0.25rem 0.75rem;
    border-radius: 15px;
    font-size: 0.875rem;
    font-weight: 500;
}

/* Projects Section - Semi-transparent to show particles */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2.5rem;
}

.project-card {
    background: var(--background-card);
    border-radius: 20px;
    border: 1px solid var(--border-color);
    overflow: hidden;
    transition: var(--transition-smooth);
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.project-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary-color);
    box-shadow: 0 12px 30px rgba(0, 245, 255, 0.15);
}

.project-image {
    height: 200px;
    background: var(--gradient-primary);
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.project-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-smooth);
    border-radius: 0;
    background: var(--gradient-primary);
}

.project-img:not([src]), .project-img[src=""] {
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
}

.project-img:not([src])::before, .project-img[src=""]::before {
    content: '🚀';
    font-size: 3rem;
    color: var(--background-primary);
}

/* Efecto cuando la imagen falla al cargar */
.project-img[alt]::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    display: none;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: var(--background-primary);
}

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

/* Fallback para imágenes que no cargan */
.project-image-fallback {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2;
}

.fallback-content {
    text-align: center;
    color: var(--background-primary);
}

.fallback-icon {
    font-size: 3rem;
    margin-bottom: 0.5rem;
    display: block;
}

.fallback-text {
    font-size: 1rem;
    font-weight: 600;
    opacity: 0.9;
}

.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition-smooth);
    backdrop-filter: blur(5px);
    z-index: 3;
}

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

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

.project-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: var(--background-primary);
    border-radius: 50%;
    text-decoration: none;
    transition: var(--transition-smooth);
    font-size: 1.2rem;
    box-shadow: 0 4px 15px rgba(0, 245, 255, 0.3);
}

.project-link:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(0, 245, 255, 0.5);
    background: var(--secondary-color);
}

.project-link i {
    color: var(--background-primary);
}

.project-content {
    padding: var(--card-padding);
}

.project-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.project-description {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 1.5rem;
    font-weight: 400;
    opacity: 0.95;
}

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

/* Skills Section - Semi-transparent to show particles */
.skills-content {
    display: grid;
    gap: 3rem;
}

.skills-category {
    background: var(--background-card);
    padding: var(--card-padding);
    border-radius: 20px;
    border: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
    transition: var(--transition-smooth);
}

.skills-category:hover {
    border-color: var(--primary-color);
    box-shadow: 0 8px 25px rgba(0, 245, 255, 0.1);
}

.category-title {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 2rem;
}

.category-title i {
    color: var(--primary-color);
    font-size: 1.25rem;
}

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

.skill-card {
    background: var(--background-secondary);
    padding: 1.5rem 1rem;
    border-radius: 15px;
    border: 1px solid var(--border-color);
    text-align: center;
    transition: var(--transition-smooth);
    backdrop-filter: blur(5px);
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.2);
}

.skill-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-5px);
    box-shadow: 0 6px 20px rgba(0, 245, 255, 0.1);
}

.skill-icon {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.skill-name {
    color: var(--text-primary);
    font-weight: 500;
}

/* Contact Section - Semi-transparent to show particles */
.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.contact-card {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    background: var(--background-card);
    padding: 1.5rem;
    border-radius: 15px;
    border: 1px solid var(--border-color);
    margin-bottom: 1.5rem;
    transition: var(--transition-smooth);
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.contact-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 245, 255, 0.15);
}

.contact-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--background-primary);
    font-size: 1.25rem;
}

.contact-details h3 {
    color: var(--text-primary);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.contact-details p {
    color: var(--text-secondary);
    font-weight: 400;
    opacity: 0.95;
}

.contact-form {
    background: var(--background-card);
    padding: var(--card-padding);
    border-radius: 20px;
    border: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

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

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

.form-input {
    background: var(--background-secondary);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 1rem;
    color: var(--text-primary);
    font-family: var(--font-primary);
    transition: var(--transition-smooth);
}

.form-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 245, 255, 0.1);
}

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

/* Footer - Solid background (no particles) */
.footer {
    background: var(--background-primary);
    border-top: 1px solid var(--border-color);
    padding: 3rem 0 1rem;
    position: relative;
    z-index: 1;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 2rem;
}

.footer-brand p {
    color: var(--text-secondary);
    margin-top: 1rem;
    font-weight: 400;
    opacity: 0.9;
}

.footer-links h4,
.footer-social h4 {
    color: var(--text-primary);
    font-weight: 600;
    margin-bottom: 1rem;
}

.footer-links ul {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.5rem;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition-fast);
    font-weight: 400;
    opacity: 0.9;
}

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

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

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--background-card);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition-smooth);
}

.social-links a:hover {
    color: var(--primary-color);
    border-color: var(--primary-color);
    transform: translateY(-2px);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background: rgba(10, 10, 10, 0.95);
        backdrop-filter: blur(20px);
        width: 100%;
        text-align: center;
        transition: var(--transition-smooth);
        box-shadow: var(--shadow-lg);
        padding: 2rem 0;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .hamburger {
        display: flex;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 250px;
    }
    
    .timeline::before {
        left: 30px;
        transform: none;
    }
    
    .timeline-item {
        flex-direction: column !important;
        align-items: flex-start;
        padding-left: 4rem;
        margin-bottom: 4rem;
        padding-top: 3rem;
    }
    
    .timeline-content {
        width: 100% !important;
        margin: 0 !important;
        text-align: left !important;
        margin-top: 1rem !important;
    }
    
    .timeline-date {
        left: 30px !important;
        top: 15px !important;
        transform: translateX(-50%) !important;
        position: absolute;
        font-size: 0.75rem;
        padding: 0.5rem 1rem;
        min-width: auto;
        z-index: 10;
    }
    
    .about-stats {
        grid-template-columns: 1fr;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .skills-grid {
        grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }
    
    .nav-container {
        padding: 0 1rem;
    }
    
    .hero {
        padding: 80px 0 40px;
    }
    
    section {
        padding: 60px 0;
    }
    
    .hero-social {
        justify-content: center;
    }
    
    .image-container {
        width: 300px;
        height: 300px;
    }
    
    .skill-card {
        padding: 1rem 0.5rem;
    }
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--background-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--secondary-color);
}

/* Loading Animation */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid var(--border-color);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 1s ease-in-out infinite;
}

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

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

/* Enhanced text readability for cards */
.card-text-enhanced {
    color: var(--text-secondary);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
    font-weight: 400;
}

/* Timeline improvements to prevent overlapping */
.timeline-item::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    width: 20px;
    height: 20px;
    background: var(--primary-color);
    border-radius: 50%;
    transform: translateX(-50%);
    z-index: 5;
    border: 3px solid var(--background-primary);
}

@media (max-width: 768px) {
    .timeline-item::before {
        left: 30px;
        transform: translateX(-50%);
    }
}

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }

.hidden { display: none; }
.visible { display: block; }