/* ==========================================
   CSS VARIABLES & ROOT STYLES
   ========================================== */
:root {
    /* Color Palette - Tech & Data Oriented */
    --color-primary: #0f172a;
    --color-primary-light: #1e293b;
    --color-accent: #3b82f6;
    --color-accent-light: #60a5fa;
    --color-accent-dark: #2563eb;
    --color-text: #1e293b;
    --color-text-light: #64748b;
    --color-bg: #f8fafc;
    --color-white: #ffffff;
    --color-border: #e2e8f0;
    --color-code: #10b981;
    
    /* Typography */
    --font-display: 'Sora', sans-serif;
    --font-mono: 'IBM Plex Mono', monospace;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    /* Layout */
    --container-width: 1200px;
    --border-radius: 0.75rem;
    
    /* Transitions */
    --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ==========================================
   RESET & BASE STYLES
   ========================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-display);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    overflow-x: hidden;
}

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

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

code {
    font-family: var(--font-mono);
}

/* ==========================================
   CONTAINER & LAYOUT
   ========================================== */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ==========================================
   NAVIGATION
   ========================================== */
.navigation {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
    animation: slideDown 0.6s ease-out;
}

@keyframes slideDown {
    from {
        transform: translateY(-100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 700;
    color: var(--color-primary);
    font-size: 1.25rem;
}

.logo-icon {
    font-family: var(--font-mono);
    color: var(--color-accent);
    font-size: 1.5rem;
}

.logo-text {
    font-family: var(--font-display);
}

.nav-menu {
    display: flex;
    gap: var(--spacing-md);
    list-style: none;
}

.nav-menu a {
    font-weight: 500;
    color: var(--color-text);
    padding: 0.5rem 0;
    position: relative;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-accent);
    transition: width var(--transition-base);
}

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.lang-switch {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: none;
    border: none;
    cursor: pointer;
    font-family: var(--font-mono);
    font-size: 0.875rem;
    font-weight: 600;
    padding: 0.5rem;
}

.lang-option {
    color: var(--color-text-light);
    transition: var(--transition-base);
}

.lang-option.active {
    color: var(--color-accent);
}

.lang-option:hover {
    color: var(--color-accent-dark);
}

.lang-divider {
    color: var(--color-border);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.nav-toggle span {
    width: 25px;
    height: 2px;
    background: var(--color-primary);
    transition: var(--transition-base);
}

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

.data-viz-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    opacity: 0.1;
}

#dataCanvas {
    width: 100%;
    height: 100%;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 900px;
    padding: var(--spacing-md);
}

.hero-text-wrapper {
    animation: fadeInUp 1s ease-out;
}

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

.hero-label {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--color-accent);
    background: rgba(59, 130, 246, 0.1);
    padding: 0.5rem 1rem;
    border-radius: 50px;
    margin-bottom: var(--spacing-sm);
    border: 1px solid rgba(59, 130, 246, 0.2);
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 8vw, 5rem);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: var(--spacing-md);
    color: var(--color-primary);
}

.title-line {
    display: block;
    opacity: 0;
    animation: revealLine 0.8s ease-out forwards;
}

.title-line:nth-child(1) {
    animation-delay: 0.2s;
}

.title-line.accent {
    animation-delay: 0.4s;
    color: var(--color-accent);
}

.title-line:nth-child(3) {
    animation-delay: 0.6s;
}

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

.hero-subtitle {
    font-family: var(--font-mono);
    font-size: 1rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-lg);
    animation: fadeInUp 1s ease-out 0.8s both;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 1s ease-out 1s both;
}

/* ==========================================
   BUTTONS
   ========================================== */
.btn-primary,
.btn-secondary {
    padding: 1rem 2rem;
    border-radius: var(--border-radius);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all var(--transition-base);
    display: inline-block;
    border: 2px solid transparent;
}

.btn-primary {
    background: var(--color-accent);
    color: var(--color-white);
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
}

.btn-primary:hover {
    background: var(--color-accent-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.4);
}

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

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

/* ==========================================
   SCROLL INDICATOR
   ========================================== */
.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    color: var(--color-text-light);
    font-size: 0.75rem;
    font-family: var(--font-mono);
    animation: fadeInUp 1s ease-out 1.2s both;
}

.scroll-line {
    width: 2px;
    height: 40px;
    background: linear-gradient(to bottom, var(--color-accent) 0%, transparent 100%);
    animation: scrollLine 2s infinite;
}

@keyframes scrollLine {
    0% {
        opacity: 0;
        height: 0;
    }
    50% {
        opacity: 1;
        height: 40px;
    }
    100% {
        opacity: 0;
        height: 40px;
    }
}

/* ==========================================
   INTRO SECTION
   ========================================== */
.intro-section {
    padding: var(--spacing-xl) 0;
    background: var(--color-white);
}

.section-title {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-lg);
    color: var(--color-primary);
    opacity: 0;
}

.section-title[data-animate].animated {
    animation: fadeInUp 0.8s ease-out forwards;
}

.intro-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
}

.intro-card {
    padding: var(--spacing-lg);
    background: var(--color-bg);
    border-radius: var(--border-radius);
    text-align: center;
    transition: all var(--transition-base);
    border: 2px solid transparent;
    opacity: 0;
    transform: translateY(30px);
}

.intro-card[data-animate].animated {
    animation: fadeInUp 0.6s ease-out forwards;
}

.intro-card:nth-child(1) { animation-delay: 0.1s; }
.intro-card:nth-child(2) { animation-delay: 0.2s; }
.intro-card:nth-child(3) { animation-delay: 0.3s; }

.intro-card:hover {
    transform: translateY(-10px);
    border-color: var(--color-accent);
    box-shadow: 0 10px 30px rgba(59, 130, 246, 0.15);
}

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

.intro-card h3 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--color-primary);
}

.intro-card p {
    color: var(--color-text-light);
}

/* ==========================================
   TECH STACK SECTION
   ========================================== */
.tech-stack-section {
    padding: var(--spacing-xl) 0;
    background: var(--color-bg);
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    opacity: 0;
}

.tech-grid[data-animate].animated {
    animation: fadeInUp 0.8s ease-out 0.3s forwards;
}

.tech-category {
    background: var(--color-white);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
}

.tech-category h3 {
    font-family: var(--font-display);
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--color-primary);
}

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

.tech-tag {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    background: var(--color-bg);
    color: var(--color-accent);
    padding: 0.5rem 1rem;
    border-radius: 50px;
    border: 1px solid var(--color-accent);
    transition: var(--transition-base);
}

.tech-tag:hover {
    background: var(--color-accent);
    color: var(--color-white);
}

/* ==========================================
   PAGE CONTENT
   ========================================== */
.page-content {
    padding-top: 80px;
    min-height: calc(100vh - 200px);
}

.page-header {
    padding: var(--spacing-xl) 0 var(--spacing-lg);
    text-align: center;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.05) 0%, transparent 100%);
}

.page-title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
    opacity: 0;
}

.page-title[data-animate].animated {
    animation: fadeInUp 0.8s ease-out forwards;
}

.page-subtitle {
    font-size: 1.2rem;
    color: var(--color-text-light);
    max-width: 700px;
    margin: 0 auto;
    opacity: 0;
}

.page-subtitle[data-animate].animated {
    animation: fadeInUp 0.8s ease-out 0.2s forwards;
}

/* ==========================================
   PORTFOLIO SECTION
   ========================================== */
.portfolio-section {
    padding: var(--spacing-xl) 0;
}

.portfolio-filter {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
    opacity: 0;
}

.portfolio-filter[data-animate].animated {
    animation: fadeInUp 0.8s ease-out 0.3s forwards;
}

.filter-btn {
    font-family: var(--font-mono);
    padding: 0.75rem 1.5rem;
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: 50px;
    cursor: pointer;
    font-weight: 500;
    font-size: 0.875rem;
    color: var(--color-text);
    transition: all var(--transition-base);
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--color-accent);
    color: var(--color-white);
    border-color: var(--color-accent);
    transform: translateY(-2px);
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: var(--spacing-md);
}

.portfolio-item {
    background: var(--color-white);
    border-radius: var(--border-radius);
    overflow: hidden;
    transition: all var(--transition-base);
    border: 2px solid var(--color-border);
    opacity: 0;
    transform: translateY(30px);
}

.portfolio-item[data-animate].animated {
    animation: fadeInUp 0.6s ease-out forwards;
}

.portfolio-item:nth-child(1) { animation-delay: 0.1s; }
.portfolio-item:nth-child(2) { animation-delay: 0.2s; }
.portfolio-item:nth-child(3) { animation-delay: 0.3s; }
.portfolio-item:nth-child(4) { animation-delay: 0.4s; }
.portfolio-item:nth-child(5) { animation-delay: 0.5s; }
.portfolio-item:nth-child(6) { animation-delay: 0.6s; }

.portfolio-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
    border-color: var(--color-accent);
}

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

.placeholder-image {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md);
}

.code-snippet {
    font-family: var(--font-mono);
    color: white;
    font-size: 0.75rem;
    line-height: 1.6;
    text-align: left;
}

.code-snippet pre {
    white-space: pre-wrap;
    word-wrap: break-word;
}

.portfolio-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(15, 23, 42, 0.95);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-base);
}

.portfolio-item:hover .portfolio-overlay {
    opacity: 1;
}

.overlay-content {
    text-align: center;
    color: white;
    padding: var(--spacing-md);
}

.overlay-content h3 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    margin-bottom: var(--spacing-xs);
}

.overlay-content p {
    margin-bottom: var(--spacing-sm);
    font-size: 0.9rem;
}

.project-metrics {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
    margin-top: var(--spacing-sm);
}

.project-metrics span {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    background: rgba(59, 130, 246, 0.2);
    padding: 0.25rem 0.75rem;
    border-radius: 50px;
    border: 1px solid var(--color-accent);
}

.portfolio-info {
    padding: var(--spacing-md);
}

.portfolio-info h3 {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--color-primary);
}

.project-tags {
    font-family: var(--font-mono);
    color: var(--color-text-light);
    font-size: 0.875rem;
}

/* ==========================================
   CV SECTION
   ========================================== */
.cv-section {
    padding: var(--spacing-xl) 0;
}

.cv-intro {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    align-items: center;
    opacity: 0;
}

.cv-intro[data-animate].animated {
    animation: fadeInUp 0.8s ease-out 0.3s forwards;
}

.profile-image-placeholder {
    width: 250px;
    height: 250px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-light) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 6rem;
    margin: 0 auto;
    border: 4px solid var(--color-white);
    box-shadow: 0 10px 30px rgba(59, 130, 246, 0.2);
}

.cv-bio h2 {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--color-primary);
}

.cv-bio p {
    color: var(--color-text-light);
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
}

.cv-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.stat-item {
    text-align: center;
    padding: var(--spacing-sm);
    background: var(--color-bg);
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
}

.stat-number {
    display: block;
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-accent);
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    display: block;
    font-family: var(--font-mono);
    color: var(--color-text-light);
    font-size: 0.875rem;
}

/* ==========================================
   TIMELINE
   ========================================== */
.cv-timeline {
    position: relative;
    padding-left: 50px;
    margin-bottom: var(--spacing-xl);
}

.timeline-title {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    color: var(--color-primary);
    margin-left: -50px;
}

.cv-timeline::before {
    content: '';
    position: absolute;
    left: 15px;
    top: 60px;
    bottom: 0;
    width: 2px;
    background: var(--color-border);
}

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

.timeline-item[data-animate].animated {
    animation: slideInLeft 0.6s ease-out forwards;
}

@keyframes slideInLeft {
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.timeline-item:nth-child(1) { animation-delay: 0.1s; }
.timeline-item:nth-child(2) { animation-delay: 0.2s; }
.timeline-item:nth-child(3) { animation-delay: 0.3s; }
.timeline-item:nth-child(4) { animation-delay: 0.4s; }

.timeline-marker {
    position: absolute;
    left: -40px;
    top: 5px;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--color-accent);
    border: 3px solid var(--color-white);
    box-shadow: 0 0 0 4px var(--color-accent-light);
}

.timeline-content {
    background: var(--color-white);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    border: 2px solid var(--color-border);
    transition: all var(--transition-base);
}

.timeline-content:hover {
    transform: translateX(10px);
    border-color: var(--color-accent);
    box-shadow: 0 5px 20px rgba(59, 130, 246, 0.1);
}

.timeline-date {
    display: inline-block;
    font-family: var(--font-mono);
    padding: 0.25rem 1rem;
    background: var(--color-accent);
    color: white;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.timeline-content h3 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.timeline-company {
    color: var(--color-accent);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.timeline-content p {
    color: var(--color-text-light);
    line-height: 1.8;
}

/* ==========================================
   SKILLS SECTION
   ========================================== */
.cv-skills {
    margin-bottom: var(--spacing-xl);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.skill-category {
    background: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    border: 2px solid var(--color-border);
    opacity: 0;
    transform: translateY(30px);
}

.skill-category[data-animate].animated {
    animation: fadeInUp 0.6s ease-out forwards;
}

.skill-category:nth-child(1) { animation-delay: 0.1s; }
.skill-category:nth-child(2) { animation-delay: 0.2s; }
.skill-category:nth-child(3) { animation-delay: 0.3s; }
.skill-category:nth-child(4) { animation-delay: 0.4s; }

.skill-category h3 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--color-primary);
}

.skill-list {
    list-style: none;
}

.skill-list li {
    margin-bottom: var(--spacing-md);
}

.skill-name {
    display: block;
    font-family: var(--font-mono);
    margin-bottom: var(--spacing-xs);
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--color-text);
}

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

.skill-progress {
    height: 100%;
    background: linear-gradient(90deg, var(--color-accent) 0%, var(--color-accent-light) 100%);
    border-radius: 10px;
    transition: width 1s ease-out;
}

.cv-download {
    text-align: center;
    opacity: 0;
}

.cv-download[data-animate].animated {
    animation: fadeInUp 0.8s ease-out 0.5s forwards;
}

/* ==========================================
   LINKS SECTION
   ========================================== */
.links-section {
    padding: var(--spacing-xl) 0;
}

.contact-info {
    margin-bottom: var(--spacing-xl);
    opacity: 0;
}

.contact-info[data-animate].animated {
    animation: fadeInUp 0.8s ease-out 0.3s forwards;
}

.contact-info h2 {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-lg);
    color: var(--color-primary);
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.contact-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: var(--color-white);
    border-radius: var(--border-radius);
    border: 2px solid var(--color-border);
    transition: all var(--transition-base);
}

.contact-item:hover {
    transform: translateY(-5px);
    border-color: var(--color-accent);
    box-shadow: 0 5px 20px rgba(59, 130, 246, 0.1);
}

.contact-icon {
    font-size: 2rem;
}

.contact-details h3 {
    font-size: 0.875rem;
    font-family: var(--font-mono);
    color: var(--color-text-light);
    margin-bottom: 0.25rem;
}

.contact-details a {
    color: var(--color-primary);
    font-weight: 600;
}

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

.social-links h2 {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-lg);
    color: var(--color-primary);
    opacity: 0;
}

.social-links h2[data-animate].animated {
    animation: fadeInUp 0.8s ease-out 0.4s forwards;
}

.links-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.link-card {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: var(--color-white);
    border-radius: var(--border-radius);
    border: 2px solid var(--color-border);
    transition: all var(--transition-base);
    opacity: 0;
    transform: translateY(30px);
}

.link-card[data-animate].animated {
    animation: fadeInUp 0.6s ease-out forwards;
}

.link-card:nth-child(1) { animation-delay: 0.1s; }
.link-card:nth-child(2) { animation-delay: 0.15s; }
.link-card:nth-child(3) { animation-delay: 0.2s; }
.link-card:nth-child(4) { animation-delay: 0.25s; }
.link-card:nth-child(5) { animation-delay: 0.3s; }
.link-card:nth-child(6) { animation-delay: 0.35s; }
.link-card:nth-child(7) { animation-delay: 0.4s; }
.link-card:nth-child(8) { animation-delay: 0.45s; }

.link-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(59, 130, 246, 0.15);
    border-color: var(--color-accent);
}

.link-icon {
    min-width: 60px;
    height: 60px;
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
}

.link-content {
    flex: 1;
}

.link-content h3 {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 0.25rem;
}

.link-content p {
    color: var(--color-text-light);
    font-size: 0.9rem;
}

.link-arrow {
    font-size: 1.5rem;
    color: var(--color-accent);
    transition: transform var(--transition-base);
}

.link-card:hover .link-arrow {
    transform: translateX(5px);
}

.cta-section {
    text-align: center;
    padding: var(--spacing-xl);
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.05) 0%, transparent 100%);
    border-radius: var(--border-radius);
    border: 2px solid var(--color-border);
    opacity: 0;
}

.cta-section[data-animate].animated {
    animation: fadeInUp 0.8s ease-out 0.5s forwards;
}

.cta-section h2 {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--color-primary);
}

.cta-section p {
    font-size: 1.2rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-md);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* ==========================================
   FOOTER
   ========================================== */
.footer {
    background: var(--color-primary);
    color: white;
    padding: var(--spacing-lg) 0;
    margin-top: var(--spacing-xl);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
}

.footer-section h4 {
    font-family: var(--font-display);
    margin-bottom: var(--spacing-sm);
    color: var(--color-accent-light);
}

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

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

.footer-section a:hover {
    color: var(--color-accent-light);
}

/* ==========================================
   RESPONSIVE DESIGN
   ========================================== */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(10px);
        flex-direction: column;
        padding: var(--spacing-lg);
        transition: left var(--transition-base);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .intro-grid {
        grid-template-columns: 1fr;
    }
    
    .cv-intro {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .cv-stats {
        grid-template-columns: 1fr;
    }
    
    .portfolio-grid {
        grid-template-columns: 1fr;
    }
    
    .links-grid {
        grid-template-columns: 1fr;
    }
    
    .skills-grid {
        grid-template-columns: 1fr;
    }
    
    .tech-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    :root {
        --spacing-md: 1rem;
        --spacing-lg: 2rem;
        --spacing-xl: 3rem;
    }
    
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .hero-title {
        font-size: 2rem;
    }
}