/* CSS Variables */
:root {
    /* Futuristic Dark Palette */
    --bg-primary: #050505;
    --bg-secondary: #0a0a0f;
    --bg-tertiary: #0f0f15;
    --bg-card: rgba(255, 255, 255, 0.03);
    --bg-card-hover: rgba(255, 255, 255, 0.06);
    
    /* Neon Accents */
    --accent-cyan: #00f0ff;
    --accent-purple: #2d8de7;
    --accent-pink: #ff2e97;
    --accent-gradient: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple), var(--accent-pink));
    
    /* Text Colors */
    --text-primary: #ffffff;
    --text-secondary: #a0a0b0;
    --text-tertiary: #606070;
    
    /* Borders */
    --border-color: rgba(255, 255, 255, 0.08);
    --border-glow: rgba(0, 240, 255, 0.3);
    
    /* Typography */
    --font-display: 'Space Grotesk', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    /* Spacing */
    --section-padding: 120px;
    --container-width: 1200px;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-smooth: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Shadows */
    --glow-cyan: 0 0 30px rgba(0, 240, 255, 0.3);
    --glow-purple: 0 0 30px rgba(181, 55, 242, 0.3);
    --shadow-card: 0 10px 40px rgba(0, 0, 0, 0.5);
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.7;
    color: var(--text-secondary);
    background: var(--bg-primary);
    overflow-x: hidden;
}

::selection {
    background: var(--accent-cyan);
    color: var(--bg-primary);
}

/* Animated Background */
.bg-gradient {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(ellipse at 20% 20%, rgba(181, 55, 242, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 80%, rgba(0, 240, 255, 0.1) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 50%, rgba(255, 46, 151, 0.05) 0%, transparent 70%);
    pointer-events: none;
    z-index: -3;
    animation: gradientShift 20s ease infinite;
}

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

.bg-grid {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
    background-size: 60px 60px;
    pointer-events: none;
    z-index: -2;
}

.floating-shapes {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
    overflow: hidden;
}

.shape {
    position: absolute;
    border-radius: 50%;
    filter: blur(60px);
    opacity: 0.4;
    animation: float 20s ease-in-out infinite;
}

.shape-1 {
    width: 400px;
    height: 400px;
    background: var(--accent-cyan);
    top: 10%;
    left: 10%;
    animation-delay: 0s;
}

.shape-2 {
    width: 300px;
    height: 300px;
    background: var(--accent-purple);
    top: 60%;
    right: 10%;
    animation-delay: -5s;
}

.shape-3 {
    width: 250px;
    height: 250px;
    background: var(--accent-pink);
    bottom: 20%;
    left: 30%;
    animation-delay: -10s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    25% { transform: translate(30px, -30px) scale(1.05); }
    50% { transform: translate(-20px, 20px) scale(0.95); }
    75% { transform: translate(20px, 10px) scale(1.02); }
}

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

/* Navigation */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 20px 0;
    transition: all var(--transition-smooth);
}

.header.scrolled {
    padding: 15px 0;
    background: rgba(5, 5, 5, 0.9);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
}

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

.nav-logo {
    display: flex;
    align-items: center;
    gap: 4px;
    text-decoration: none;
}

.logo-text {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.logo-dot {
    width: 8px;
    height: 8px;
    background: var(--accent-cyan);
    border-radius: 50%;
    animation: pulse 2s ease infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(0.8); }
}

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

.nav-link {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-decoration: none;
    position: relative;
    padding: 8px 0;
    transition: color var(--transition-smooth);
}

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

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

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

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.nav-toggle span {
    width: 28px;
    height: 2px;
    background: var(--text-primary);
    transition: all var(--transition-smooth);
}

.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* Mobile Menu */
.mobile-menu {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: rgba(5, 5, 5, 0.98);
    backdrop-filter: blur(20px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-smooth);
}

.mobile-menu.active {
    opacity: 1;
    visibility: visible;
}

.mobile-menu-list {
    list-style: none;
    text-align: center;
}

.mobile-link {
    display: block;
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-decoration: none;
    padding: 20px;
    transition: all var(--transition-smooth);
    transform: translateY(30px);
    opacity: 0;
}

.mobile-menu.active .mobile-link {
    transform: translateY(0);
    opacity: 1;
}

.mobile-menu.active .mobile-link:nth-child(1) { transition-delay: 0.1s; }
.mobile-menu.active .mobile-link:nth-child(2) { transition-delay: 0.15s; }
.mobile-menu.active .mobile-link:nth-child(3) { transition-delay: 0.2s; }
.mobile-menu.active .mobile-link:nth-child(4) { transition-delay: 0.25s; }
.mobile-menu.active .mobile-link:nth-child(5) { transition-delay: 0.3s; }
.mobile-menu.active .mobile-link:nth-child(6) { transition-delay: 0.35s; }

.mobile-link:hover {
    color: var(--accent-cyan);
}

/* Section Styles */
.section-header {
    margin-bottom: 60px;
    text-align: center;
}

.section-number {
    font-family: var(--font-display);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--accent-cyan);
    letter-spacing: 0.2em;
    display: block;
    margin-bottom: 16px;
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.section-line {
    width: 60px;
    height: 3px;
    background: var(--accent-gradient);
    margin: 0 auto;
    border-radius: 2px;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--section-padding) 24px;
    position: relative;
}

.hero-content {
    text-align: center;
    max-width: 900px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 100px;
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
    animation: fadeInUp 0.8s ease;
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: #22c55e;
    border-radius: 50%;
    animation: pulse 2s ease infinite;
}

.hero-title {
    margin-bottom: 24px;
    animation: fadeInUp 0.8s ease 0.2s backwards;
}

.title-line {
    display: block;
    font-family: var(--font-body);
    font-size: 1.25rem;
    font-weight: 400;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.title-name {
    display: block;
    font-family: var(--font-display);
    font-size: clamp(3.5rem, 12vw, 7rem);
    font-weight: 700;
    line-height: 1;
    letter-spacing: -0.03em;
}

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

.title-surname {
    display: block;
    font-family: var(--font-display);
    font-size: clamp(2rem, 6vw, 4rem);
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.2;
    letter-spacing: -0.02em;
}

.hero-roles {
    font-family: var(--font-display);
    font-size: 1.25rem;
    color: var(--accent-cyan);
    margin-bottom: 24px;
    min-height: 1.5em;
    animation: fadeInUp 0.8s ease 0.4s backwards;
}

.typing-cursor {
    animation: blink 1s step-end infinite;
}

@keyframes blink {
    50% { opacity: 0; }
}

.hero-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 40px;
    line-height: 1.8;
    animation: fadeInUp 0.8s ease 0.5s backwards;
}

.hero-cta {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 60px;
    animation: fadeInUp 0.8s ease 0.6s backwards;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 32px;
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: 12px;
    cursor: pointer;
    transition: all var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--accent-gradient);
    color: var(--bg-primary);
    border: none;
}

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

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

.btn-secondary:hover {
    border-color: var(--accent-cyan);
    background: rgba(0, 240, 255, 0.1);
}

.btn-outline {
    background: transparent;
    color: var(--accent-cyan);
    border: 1px solid var(--accent-cyan);
}

.btn-outline:hover {
    background: var(--accent-cyan);
    color: var(--bg-primary);
}

/* Hero Stats */
.hero-stats {
    display: flex;
    justify-content: center;
    gap: 60px;
    animation: fadeInUp 0.8s ease 0.7s backwards;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.stat-number::after {
    content: '+';
    color: var(--accent-cyan);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    color: var(--text-tertiary);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    animation: fadeInUp 0.8s ease 1s backwards;
}

.mouse {
    width: 24px;
    height: 40px;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    position: relative;
}

.wheel {
    width: 4px;
    height: 8px;
    background: var(--accent-cyan);
    border-radius: 2px;
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll 2s ease infinite;
}

@keyframes scroll {
    0%, 100% { transform: translateX(-50%) translateY(0); opacity: 1; }
    100% { transform: translateX(-50%) translateY(12px); opacity: 0; }
}

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

/* About Section */
.about {
    padding: var(--section-padding) 0;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 80px;
    align-items: center;
}

.about-image {
    position: relative;
}

.image-frame {
    position: relative;
    width: 100%;
    max-width: 350px;
    aspect-ratio: 1;
    margin: 0 auto;
}

.image-placeholder {
    width: 100%;
    height: 100%;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.initials {
    font-family: var(--font-display);
    font-size: 5rem;
    font-weight: 700;
    background: var(--accent-gradient);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.image-glow {
    position: absolute;
    top: -20%;
    left: -20%;
    width: 140%;
    height: 140%;
    background: radial-gradient(circle, rgba(0, 240, 255, 0.2) 0%, transparent 70%);
    pointer-events: none;
}

.about-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 24px;
    justify-content: center;
}

.badge {
    padding: 8px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 100px;
    font-size: 0.875rem;
    color: var(--text-secondary);
    transition: all var(--transition-smooth);
}

.badge:hover {
    border-color: var(--accent-cyan);
    transform: translateY(-2px);
}

.about-text {
    padding: 20px 0;
}

.about-subtitle {
    font-family: var(--font-display);
    font-size: 1.75rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 24px;
}

.about-text p {
    margin-bottom: 20px;
    line-height: 1.8;
}

.about-cta {
    margin-top: 32px;
}

/* Skills Section */
.skills {
    padding: var(--section-padding) 0;
    background: var(--bg-secondary);
}

.skills-tabs {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-bottom: 48px;
    flex-wrap: wrap;
}

.tab-btn {
    padding: 12px 28px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 100px;
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-smooth);
}

.tab-btn:hover {
    border-color: var(--accent-cyan);
}

.tab-btn.active {
    background: var(--accent-gradient);
    color: var(--bg-primary);
    border-color: transparent;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 24px;
    display: none;
}

.skills-grid.active {
    display: grid;
}

.skill-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 28px;
    text-align: center;
    transition: all var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.skill-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--accent-gradient);
    opacity: 0;
    transition: opacity var(--transition-smooth);
}

.skill-card:hover {
    transform: translateY(-8px);
    border-color: var(--accent-cyan);
    box-shadow: var(--glow-cyan);
}

.skill-card:hover::before {
    opacity: 0.05;
}

.skill-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto 16px;
    color: var(--accent-cyan);
}

.skill-card h4 {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.skill-bar {
    height: 4px;
    background: var(--border-color);
    border-radius: 2px;
    overflow: hidden;
    margin-bottom: 12px;
}

.skill-progress {
    height: 100%;
    background: var(--accent-gradient);
    border-radius: 2px;
    width: 0;
    transition: width 1s ease;
}

.skill-exp {
    font-size: 0.75rem;
    color: var(--text-tertiary);
}

/* Projects Section */
.projects {
    padding: var(--section-padding) 0;
}

.projects-filter {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-bottom: 48px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 10px 24px;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 100px;
    font-family: var(--font-body);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-smooth);
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--accent-cyan);
    color: var(--bg-primary);
    border-color: var(--accent-cyan);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 32px;
}

.project-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    overflow: hidden;
    transition: all var(--transition-smooth);
}

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

.project-image {
    position: relative;
    aspect-ratio: 16/10;
    overflow: hidden;
}

.project-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 600;
    color: white;
    transition: transform var(--transition-slow);
}

.project-card:hover .project-placeholder {
    transform: scale(1.08);
}

.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(5, 5, 5, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    opacity: 0;
    transition: opacity var(--transition-smooth);
}

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

.project-link {
    padding: 12px 24px;
    background: var(--accent-cyan);
    color: var(--bg-primary);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: 8px;
    transition: all var(--transition-smooth);
}

.project-link:hover {
    background: var(--text-primary);
}

.project-info {
    padding: 28px;
}

.project-number {
    font-family: var(--font-display);
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--accent-cyan);
    margin-bottom: 8px;
}

.project-title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.project-description {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: 20px;
    line-height: 1.7;
}

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

.project-tech span {
    padding: 6px 14px;
    background: var(--bg-tertiary);
    border-radius: 6px;
    font-size: 0.75rem;
    color: var(--text-secondary);
}

/* Experience Section */
.experience {
    padding: var(--section-padding) 0;
    background: var(--bg-secondary);
}

.timeline {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 24px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--border-color);
}

.timeline-item {
    display: flex;
    gap: 32px;
    margin-bottom: 48px;
    position: relative;
}

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

.timeline-marker {
    flex-shrink: 0;
    width: 50px;
    display: flex;
    justify-content: center;
    position: relative;
    z-index: 1;
}

.marker-dot {
    width: 16px;
    height: 16px;
    background: var(--accent-cyan);
    border-radius: 50%;
    box-shadow: var(--glow-cyan);
}

.timeline-content {
    flex: 1;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 28px;
    transition: all var(--transition-smooth);
}

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

.timeline-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 20px;
}

.company-logo {
    width: 50px;
    height: 50px;
    background: var(--accent-gradient);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1rem;
    color: var(--bg-primary);
}

.timeline-info h3 {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.timeline-info .company {
    display: block;
    font-size: 0.95rem;
    color: var(--accent-cyan);
    margin-bottom: 4px;
}

.timeline-info .duration {
    font-size: 0.875rem;
    color: var(--text-tertiary);
}

.timeline-details {
    list-style: none;
    margin-bottom: 20px;
}

.timeline-details li {
    position: relative;
    padding-left: 20px;
    margin-bottom: 10px;
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.timeline-details li::before {
    content: '▹';
    position: absolute;
    left: 0;
    color: var(--accent-cyan);
}

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

.timeline-tech span {
    padding: 4px 12px;
    background: rgba(0, 240, 255, 0.1);
    border: 1px solid rgba(0, 240, 255, 0.3);
    border-radius: 4px;
    font-size: 0.75rem;
    color: var(--accent-cyan);
}

/* Certificates Section */
.certificates {
    padding: var(--section-padding) 0;
    background: var(--bg-secondary);
}

.certificates-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin-top: 60px;
}

.certificate-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    transition: all var(--transition-smooth);
    display: flex;
    flex-direction: column;
}

.certificate-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-cyan);
    box-shadow: 0 10px 40px rgba(0, 240, 255, 0.15);
    background: var(--bg-card-hover);
}

.certificate-image-wrapper {
    position: relative;
    width: 100%;
    height: 220px;
    overflow: hidden;
    background: var(--bg-tertiary);
}

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

.certificate-card:hover .certificate-image {
    transform: scale(1.05);
}

.certificate-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: opacity var(--transition-smooth);
}

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

.certificate-view-btn {
    padding: 12px 24px;
    background: var(--accent-cyan);
    color: var(--bg-primary);
    border: none;
    border-radius: 6px;
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all var(--transition-fast);
    font-family: var(--font-body);
}

.certificate-view-btn:hover {
    background: var(--text-primary);
    transform: scale(1.05);
}

.certificate-content {
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding: 24px;
}

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

.certificate-issuer {
    font-size: 0.95rem;
    color: var(--accent-cyan);
    font-weight: 500;
    margin: 0;
}

.certificate-date {
    font-size: 0.85rem;
    color: var(--text-tertiary);
    margin: 0;
}

.certificate-description {
    font-size: 0.9rem;
    line-height: 1.6;
    color: var(--text-secondary);
    margin: 8px 0;
}

.certificate-skills {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 8px;
}

.certificate-skills span {
    padding: 4px 12px;
    background: rgba(0, 240, 255, 0.1);
    border: 1px solid rgba(0, 240, 255, 0.3);
    border-radius: 4px;
    font-size: 0.75rem;
    color: var(--accent-cyan);
    transition: all var(--transition-fast);
}

.certificate-skills span:hover {
    background: rgba(0, 240, 255, 0.2);
    border-color: var(--accent-cyan);
}

.certificate-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--accent-cyan);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    margin-top: 8px;
    transition: all var(--transition-fast);
}

.certificate-link:hover {
    gap: 12px;
    color: var(--text-primary);
}

.certificate-link svg {
    transition: transform var(--transition-fast);
}

.certificate-link:hover svg {
    transform: translate(2px, -2px);
}

/* Certificate Modal */
.certificate-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 10000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.certificate-modal.active {
    display: flex;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(10px);
}

.modal-content {
    position: relative;
    max-width: 900px;
    width: 100%;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    z-index: 1;
    animation: modalSlideIn 0.3s ease;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: scale(0.9) translateY(20px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.modal-close {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 40px;
    height: 40px;
    background: rgba(0, 0, 0, 0.8);
    border: 1px solid var(--accent-cyan);
    border-radius: 50%;
    color: var(--text-primary);
    font-size: 24px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2;
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background: var(--accent-cyan);
    color: var(--bg-primary);
    transform: rotate(90deg);
}

.modal-image {
    width: 100%;
    height: auto;
    display: block;
}

.modal-info {
    padding: 24px;
    background: var(--bg-tertiary);
}

.modal-info h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 8px 0;
}

.modal-info p {
    font-size: 1rem;
    color: var(--accent-cyan);
    margin: 0;
}

/* Contact Section */
.contact {
    padding: var(--section-padding) 0;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
}

.contact-info h3 {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 20px;
    line-height: 1.3;
}

.contact-info > p {
    font-size: 1.05rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
    line-height: 1.8;
}

.contact-details {
    margin-bottom: 40px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 20px;
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-cyan);
    flex-shrink: 0;
}

.contact-label {
    display: block;
    font-size: 0.75rem;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 4px;
}

.contact-item a {
    color: var(--text-primary);
    text-decoration: none;
    transition: color var(--transition-smooth);
}

.contact-item a:hover {
    color: var(--accent-cyan);
}

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

.social-link {
    width: 50px;
    height: 50px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: all var(--transition-smooth);
}

.social-link:hover {
    border-color: var(--accent-cyan);
    color: var(--accent-cyan);
    transform: translateY(-4px);
    box-shadow: var(--glow-cyan);
}

/* Contact Form */
.contact-form-wrapper {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    padding: 40px;
}

.form-group {
    position: relative;
    margin-bottom: 32px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 16px 0;
    background: transparent;
    border: none;
    border-bottom: 1px solid var(--border-color);
    font-family: var(--font-body);
    font-size: 1rem;
    color: var(--text-primary);
    outline: none;
    transition: border-color var(--transition-smooth);
}

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

.form-group label {
    position: absolute;
    left: 0;
    top: 16px;
    font-size: 1rem;
    color: var(--text-tertiary);
    pointer-events: none;
    transition: all var(--transition-smooth);
}

.form-group input:focus ~ label,
.form-group input:not(:placeholder-shown) ~ label,
.form-group select:focus ~ label,
.form-group select:valid ~ label,
.form-group textarea:focus ~ label,
.form-group textarea:not(:placeholder-shown) ~ label {
    top: -12px;
    font-size: 0.75rem;
    color: var(--accent-cyan);
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.form-line {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-gradient);
    transition: width var(--transition-smooth);
}

.form-group input:focus ~ .form-line,
.form-group select:focus ~ .form-line,
.form-group textarea:focus ~ .form-line {
    width: 100%;
}

.btn-submit {
    width: 100%;
    justify-content: center;
    padding: 18px 32px;
    border: none;
}

.btn-loading,
.btn-success {
    display: none;
}

.btn-submit.loading .btn-text { display: none; }
.btn-submit.loading .btn-loading { display: block; }

.btn-submit.success .btn-text { display: none; }
.btn-submit.success .btn-success { display: block; }

.spinner {
    animation: spin 1s linear infinite;
}

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

/* Footer */
.footer {
    padding: 60px 0 40px;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 40px;
}

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

.footer-brand p {
    margin-top: 8px;
    font-size: 0.9rem;
    color: var(--text-tertiary);
}

.footer-links {
    display: flex;
    gap: 32px;
}

.footer-links a {
    font-size: 0.9rem;
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition-smooth);
}

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

.back-to-top {
    width: 50px;
    height: 50px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-smooth);
}

.back-to-top:hover {
    border-color: var(--accent-cyan);
    color: var(--accent-cyan);
    transform: translateY(-4px);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
    font-size: 0.875rem;
    color: var(--text-tertiary);
}

.made-with {
    color: var(--text-secondary);
}

/* Reveal Animations */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive Design */
@media (max-width: 1024px) {
    :root {
        --section-padding: 80px;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: 48px;
    }
    
    .about-image {
        order: -1;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: 48px;
    }
    
    .certificates-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    :root {
        --section-padding: 60px;
    }
    
    body {
        cursor: auto;
    }
    
    .nav-menu {
        display: none;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .hero-stats {
        gap: 32px;
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .skills-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .timeline::before {
        left: 7px;
    }
    
    .timeline-item {
        gap: 20px;
    }
    
    .timeline-marker {
        width: 16px;
    }
    
    .marker-dot {
        width: 12px;
        height: 12px;
    }
    
    .timeline-content {
        padding: 20px;
    }
    
    .timeline-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 24px;
        text-align: center;
    }
    
    .footer-links {
        gap: 20px;
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 12px;
        text-align: center;
    }
    
    .certificate-image-wrapper {
        height: 180px;
    }
    
    .certificate-content {
        padding: 20px;
    }
    
    .modal-content {
        max-width: 95%;
    }
    
    .modal-close {
        width: 35px;
        height: 35px;
        font-size: 20px;
    }
}@media (max-width: 480px) {
    .hero-stats {
        flex-direction: column;
        gap: 24px;
    }
    
    .skills-grid {
        grid-template-columns: 1fr;
    }
    
    .skill-card {
        display: flex;
        align-items: center;
        gap: 16px;
        text-align: left;
        padding: 20px;
    }
    
    .skill-icon {
        margin: 0;
    }
    
    .skill-card h4 {
        margin-bottom: 8px;
    }
    
    .skills-tabs {
        gap: 8px;
    }
    
    .tab-btn {
        padding: 10px 16px;
        font-size: 0.8rem;
    }
    
    .projects-filter {
        gap: 8px;
    }
    
    .filter-btn {
        padding: 8px 16px;
        font-size: 0.8rem;
    }
    
    .contact-form-wrapper {
        padding: 24px;
    }
    
    .social-links {
        flex-wrap: wrap;
        justify-content: center;
    }
}

/* Print Styles */
@media print {
    body {
        background: white;
        color: black;
    }
    
    .header,
    .bg-gradient,
    .bg-grid,
    .floating-shapes,
    .cursor,
    .cursor-follower,
    .scroll-indicator,
    .back-to-top {
        display: none !important;
    }
    
    section {
        page-break-inside: avoid;
    }
}