/* ========================================
   BERTRAND GAKIZA — Portfolio CSS
   Light Theme - Modern Data Analytics Edition 2025
   ======================================== */

:root {
    /* Light Color Palette - Modern & Clean */
    --bg-primary: #f8fafc;
    --bg-secondary: #ffffff;
    --bg-tertiary: #f1f5f9;
    --bg-card: #ffffff;
    --bg-nav: rgba(255, 255, 255, 0.95);
    
    /* Primary Accent Colors - Blue Violet Theme */
    --accent-primary: #4f46e5;
    --accent-secondary: #6366f1;
    --accent-tertiary: #06b6d4;
    --accent-gradient: linear-gradient(135deg, #4f46e5 0%, #6366f1 50%, #06b6d4 100%);
    --accent-glow: rgba(79, 70, 229, 0.25);
    --accent-subtle: rgba(79, 70, 229, 0.06);
    
    /* Text Colors - High Contrast for Light Theme */
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #64748b;
    --text-light: #94a3b8;
    
    /* Borders - Subtle */
    --border-color: #e2e8f0;
    --border-hover: #cbd5e1;
    
    /* Shadows - Soft & Natural */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 12px 48px rgba(0, 0, 0, 0.09);
    --shadow-glow: 0 4px 24px rgba(79, 70, 229, 0.12);
    
    /* Spacing - Generous & Consistent */
    --section-padding: 120px 0;
    --container-width: 1200px;
    
    /* Transitions - Smooth */
    --transition-base: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.2s ease;
    
    /* Border Radius - Modern */
    --radius-sm: 10px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --radius-xl: 28px;
}

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

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.7;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    font-size: 16px;
}

body::before {
    content: '';
    position: fixed;
    inset: 0;
    background: 
        radial-gradient(ellipse at 0% 0%, rgba(79, 70, 229, 0.04) 0%, transparent 50%),
        radial-gradient(ellipse at 100% 0%, rgba(6, 182, 212, 0.03) 0%, transparent 40%),
        radial-gradient(ellipse at 50% 100%, rgba(99, 102, 241, 0.03) 0%, transparent 50%);
    pointer-events: none;
    z-index: -1;
}

::selection {
    background: rgba(79, 70, 229, 0.18);
    color: var(--text-primary);
}

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

ul {
    list-style: none;
}

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

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 32px;
}

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

/* ===== SECTIONS ===== */
.section {
    padding: var(--section-padding);
    position: relative;
}

.section-header {
    text-align: center;
    margin-bottom: 72px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.section-tag {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8rem;
    color: var(--accent-primary);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 16px;
    padding: 8px 16px;
    background: var(--accent-subtle);
    border-radius: 30px;
    font-weight: 500;
    letter-spacing: 1.5px;
    text-transform: uppercase;
}

.section-title {
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 800;
    margin-bottom: 20px;
    color: var(--text-primary);
    letter-spacing: -0.03em;
    line-height: 1.2;
}

.section-line {
    width: 50px;
    height: 4px;
    background: var(--accent-gradient);
    border-radius: 2px;
    margin: 0 auto 20px;
}

.section-subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
    line-height: 1.8;
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 14px 28px;
    border-radius: var(--radius-md);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-base);
    border: none;
    font-family: inherit;
    letter-spacing: 0.2px;
}

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

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 28px rgba(79, 70, 229, 0.3);
}

.btn-outline {
    background: transparent;
    color: var(--accent-primary);
    border: 2px solid var(--border-color);
    font-weight: 500;
}

.btn-outline:hover {
    border-color: var(--accent-primary);
    background: var(--accent-subtle);
    transform: translateY(-3px);
    color: var(--accent-primary);
}

.btn-full {
    width: 100%;
}

/* ===== NAVIGATION ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    transition: var(--transition-base);
    background: transparent;
}

.navbar.scrolled {
    background: var(--bg-nav);
    backdrop-filter: blur(20px);
    box-shadow: var(--shadow-md);
    padding: 12px 0;
}

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

.nav-logo {
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 2px;
}

.logo-bracket {
    color: var(--accent-primary);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-link {
    padding: 8px 16px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    transition: var(--transition-base);
}

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

.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.hamburger {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    position: relative;
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
}

.hamburger::before {
    top: -8px;
}

.hamburger::after {
    top: 8px;
}

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

.hero-bg-animation {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.floating-shape {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.12;
}

.shape-1 {
    width: 400px;
    height: 400px;
    background: var(--accent-primary);
    top: -100px;
    right: -100px;
}

.shape-2 {
    width: 300px;
    height: 300px;
    background: var(--accent-tertiary);
    bottom: -50px;
    left: -50px;
}

.shape-3 {
    width: 200px;
    height: 200px;
    background: var(--accent-secondary);
    top: 40%;
    right: 20%;
    filter: blur(60px);
}

.hero-container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
    width: 100%;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-text {
    max-width: 560px;
}

.hero-greeting {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.9rem;
    color: var(--accent-primary);
    margin-bottom: 16px;
    font-weight: 500;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.hero-name {
    font-size: clamp(2.2rem, 5vw, 3.2rem);
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 20px;
    line-height: 1.15;
    letter-spacing: -0.03em;
}

.hero-title-wrapper {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 24px;
    font-size: 1.25rem;
    color: var(--text-secondary);
    font-family: 'JetBrains Mono', monospace;
}

.hero-title-prefix {
    color: var(--accent-tertiary);
    font-weight: 600;
}

.hero-title {
    font-size: inherit;
    font-weight: 500;
    color: var(--text-secondary);
}

.cursor {
    animation: blink 1s step-end infinite;
    color: var(--accent-primary);
}

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

.hero-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 32px;
    line-height: 1.8;
    max-width: 540px;
}

.hero-description strong {
    color: var(--text-primary);
    font-weight: 600;
}

.hero-cta {
    display: flex;
    gap: 16px;
    margin-bottom: 48px;
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    gap: 56px;
}

.stat-number {
    font-size: 2.4rem;
    font-weight: 800;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    letter-spacing: -0.02em;
}

.stat-suffix {
    font-size: 1.6rem;
    font-weight: 700;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    display: block;
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-top: 6px;
    font-weight: 500;
}

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

.image-wrapper {
    position: relative;
    width: 320px;
    height: 400px;
}

.image-decoration {
    position: absolute;
    inset: -20px;
    background: var(--accent-gradient);
    border-radius: var(--radius-xl);
    opacity: 0.1;
    filter: blur(30px);
}

.profile-photo {
    width: 100%;
    height: 100%;
    object-fit: contain;
    border-radius: var(--radius-xl);
    position: relative;
    z-index: 2;
    box-shadow: var(--shadow-lg);
}

.image-border-glow {
    position: absolute;
    inset: -3px;
    background: var(--accent-gradient);
    border-radius: var(--radius-xl);
    z-index: 1;
    opacity: 0.2;
}

.floating-badge {
    position: absolute;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    background: var(--bg-card);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-primary);
    z-index: 10;
    animation: badge-float 6s ease-in-out infinite;
}

.floating-badge i {
    color: var(--accent-primary);
}

.badge-1 { top: 20%; right: -20px; }
.badge-2 { bottom: 25%; left: -30px; animation-delay: -2s; }
.badge-3 { bottom: 10%; right: 0; animation-delay: -4s; }
.badge-4 { top: 5%; left: -20px; animation-delay: -1s; }
.badge-5 { top: 45%; right: -25px; animation-delay: -3s; }
.badge-6 { bottom: 5%; left: 10%; animation-delay: -5s; }

@keyframes badge-float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}

.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    opacity: 0.5;
}

.mouse {
    width: 24px;
    height: 36px;
    border: 2px solid var(--text-muted);
    border-radius: 12px;
    position: relative;
}

.wheel {
    width: 4px;
    height: 8px;
    background: var(--text-muted);
    border-radius: 2px;
    position: absolute;
    top: 6px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll 2s infinite;
}

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

/* ===== ABOUT ===== */
.about {
    background: var(--bg-secondary);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}

.about-text p {
    color: var(--text-secondary);
    margin-bottom: 20px;
    font-size: 1.05rem;
    line-height: 1.85;
}

.about-text strong {
    color: var(--accent-primary);
    font-weight: 600;
}

.about-info-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin: 28px 0;
}

.info-item {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 14px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    transition: var(--transition-base);
}

.info-item:hover {
    background: var(--accent-subtle);
    transform: translateX(4px);
}

.info-item i {
    color: var(--accent-primary);
    font-size: 1rem;
    margin-top: 2px;
}

.info-label {
    display: block;
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-bottom: 2px;
}

.info-value {
    display: block;
    font-size: 0.9rem;
    color: var(--text-primary);
    font-weight: 500;
}

.about-cards {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.about-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 24px;
    transition: var(--transition-base);
}

.about-card:hover {
    border-color: var(--accent-primary);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.about-card-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-md);
    background: var(--accent-subtle);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 14px;
    transition: var(--transition-base);
}

.about-card:hover .about-card-icon {
    background: var(--accent-gradient);
}

.about-card-icon i {
    font-size: 1.1rem;
    color: var(--accent-primary);
    transition: var(--transition-base);
}

.about-card:hover .about-card-icon i {
    color: white;
}

.about-card h3 {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.about-card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin: 0;
}

/* ===== TIMELINE ===== */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    padding-left: 40px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 14px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--accent-gradient);
    opacity: 0.2;
}

.timeline-item {
    position: relative;
    margin-bottom: 32px;
}

.timeline-dot {
    position: absolute;
    left: -40px;
    top: 4px;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: var(--bg-card);
    border: 2px solid var(--accent-primary);
    display: flex;
    align-items: center;
    justify-content: center;
}

.timeline-dot i {
    font-size: 0.7rem;
    color: var(--accent-primary);
}

.timeline-content {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 28px;
    transition: var(--transition-base);
}

.timeline-content:hover {
    border-color: var(--accent-primary);
    box-shadow: var(--shadow-md);
    transform: translateX(6px);
}

.timeline-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 10px;
}

.timeline-header h3 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.01em;
}

.timeline-company {
    font-size: 0.95rem;
    color: var(--accent-primary);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 6px;
}

.timeline-date {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.8rem;
    color: var(--text-muted);
    font-family: 'JetBrains Mono', monospace;
    margin-bottom: 14px;
    background: var(--accent-subtle);
    padding: 4px 12px;
    border-radius: 20px;
    font-weight: 500;
}

.timeline-tasks {
    margin-bottom: 18px;
}

.timeline-tasks li {
    position: relative;
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: 10px;
    line-height: 1.7;
    padding-left: 22px;
}

.timeline-tasks li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--accent-primary);
    font-weight: bold;
    font-size: 0.85rem;
}

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

.tool-tag {
    padding: 4px 12px;
    background: var(--accent-subtle);
    color: var(--accent-primary);
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 500;
    font-family: 'JetBrains Mono', monospace;
}

/* ===== PROJECTS ===== */
.projects {
    background: var(--bg-primary);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 28px;
}

.project-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 28px;
    transition: var(--transition-base);
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
}

.project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--accent-gradient);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
}

.project-card:hover {
    border-color: var(--accent-primary);
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}

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

.project-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.project-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    background: var(--accent-subtle);
    display: flex;
    align-items: center;
    justify-content: center;
}

.project-icon i {
    font-size: 1.2rem;
    color: var(--accent-primary);
}

.project-links a {
    width: 38px;
    height: 38px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    transition: var(--transition-base);
    border: 1px solid var(--border-color);
}

.project-links a:hover {
    color: var(--accent-primary);
    border-color: var(--accent-primary);
    background: var(--accent-subtle);
    transform: translateY(-2px);
}

.project-title {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 14px;
    letter-spacing: -0.01em;
}

.project-description {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 24px;
    flex-grow: 1;
}

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

.project-tech span {
    padding: 5px 14px;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
    font-family: 'JetBrains Mono', monospace;
    border: 1px solid var(--border-color);
    transition: var(--transition-fast);
}

.project-tech span:hover {
    background: var(--accent-subtle);
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

/* ===== PROJECT CHARTS ===== */
.project-chart {
    margin: 0 -28px 20px -28px;
    padding: 0;
    overflow: hidden;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-tertiary);
}

.project-chart-img {
    width: 100%;
    height: 180px;
    object-fit: cover;
    object-position: center;
    display: block;
    transition: var(--transition-base);
}

.project-card:hover .project-chart-img {
    transform: scale(1.02);
}

.project-chart-placeholder {
    width: 100%;
    height: 180px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--accent-subtle) 0%, var(--bg-tertiary) 100%);
    color: var(--accent-primary);
    gap: 12px;
}

.project-chart-placeholder i {
    font-size: 3rem;
    opacity: 0.6;
}

.project-chart-placeholder span {
    font-size: 0.85rem;
    font-weight: 500;
    font-family: 'JetBrains Mono', monospace;
    color: var(--text-muted);
}

/* ===== SKILLS ===== */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
}

.skill-category,
.skill-items {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 24px;
    transition: var(--transition-base);
}

.skill-category:hover,
.skill-items:hover {
    border-color: var(--accent-primary);
    box-shadow: var(--shadow-md);
}

.skill-category-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-color);
}

.skill-category-header i {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    background: var(--accent-subtle);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-primary);
    font-size: 1rem;
}

.skill-category-header h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.skill-item {
    margin-bottom: 16px;
}

.skill-info {
    display: flex;
    justify-content: space-between;
    margin-bottom: 6px;
}

.skill-name {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.skill-percent {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--accent-primary);
    font-family: 'JetBrains Mono', monospace;
}

.skill-bar {
    height: 6px;
    background: var(--bg-tertiary);
    border-radius: 3px;
    overflow: hidden;
}

.skill-progress {
    height: 100%;
    background: var(--accent-gradient);
    border-radius: 3px;
    width: 0;
    transition: width 1.2s ease;
}

/* ===== EDUCATION ===== */
.education {
    background: var(--bg-secondary);
}

.education-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: start;
}

.education-column-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.education-column-title i {
    color: var(--accent-primary);
}

.education-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    margin-bottom: 16px;
    overflow: hidden;
    display: flex;
    transition: var(--transition-base);
}

.education-card:hover {
    border-color: var(--accent-primary);
    transform: translateX(4px);
    box-shadow: var(--shadow-md);
}

.education-card-accent {
    width: 4px;
    background: var(--accent-gradient);
    flex-shrink: 0;
}

.education-card-content {
    padding: 20px;
}

.education-date {
    font-size: 0.8rem;
    font-family: 'JetBrains Mono', monospace;
    color: var(--accent-primary);
    font-weight: 500;
}

.education-card h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 6px 0 4px;
}

.education-school {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 500;
    margin-bottom: 8px;
}

.education-details {
    font-size: 0.85rem;
    color: var(--text-muted);
    line-height: 1.5;
}

.certification-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 18px;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 14px;
    transition: var(--transition-base);
}

.certification-card:hover {
    border-color: var(--accent-primary);
    transform: translateX(4px);
}

.certification-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, rgba(234, 179, 8, .15), rgba(234, 179, 8, .05));
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.certification-icon i {
    color: #eab308;
    font-size: 1rem;
}

.certification-content h4 {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
}

.certification-year {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-family: 'JetBrains Mono', monospace;
}

.qualities-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.quality-tag {
    padding: 10px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition-base);
}

.quality-tag:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
    transform: translateY(-2px);
}

.quality-tag i {
    color: #22c55e;
    font-size: 0.85rem;
}

/* ===== CONTACT ===== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: start;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.contact-card {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    transition: var(--transition-base);
}

.contact-card:hover {
    border-color: var(--accent-primary);
    transform: translateX(6px);
    box-shadow: var(--shadow-md);
}

.contact-card-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    background: var(--accent-subtle);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-card-icon i {
    font-size: 1.1rem;
    color: var(--accent-primary);
}

.contact-card-icon.linkedin {
    background: rgba(10, 102, 194, .1);
}

.contact-card-icon.linkedin i {
    color: #0a66c2;
}

.contact-card-icon.github {
    background: rgba(0, 0, 0, .05);
}

.contact-card-icon.github i {
    color: var(--text-primary);
}

.contact-card-icon.phone {
    background: rgba(34, 197, 94, .1);
}

.contact-card-icon.phone i {
    color: #22c55e;
}

.contact-card-text h4 {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 2px;
}

.contact-card-text p {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.contact-arrow {
    margin-left: auto;
    color: var(--text-muted);
    font-size: 0.85rem;
    transition: var(--transition-base);
}

.contact-card:hover .contact-arrow {
    color: var(--accent-primary);
    transform: translateX(4px);
}

.contact-form-wrapper {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 32px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 0.95rem;
    font-family: inherit;
    transition: var(--transition-base);
    outline: none;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-muted);
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--accent-primary);
    background: var(--bg-card);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

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

/* ===== FOOTER ===== */
.footer {
    background: var(--bg-primary);
    border-top: 1px solid var(--border-color);
    padding: 40px 0;
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    text-align: center;
}

.footer-logo {
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--text-primary);
}

.footer-logo .logo-bracket {
    color: var(--accent-primary);
}

.footer-text {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.footer-text strong {
    color: var(--text-primary);
    font-weight: 500;
}

.footer-socials {
    display: flex;
    gap: 12px;
}

.footer-socials a {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    background: var(--bg-card);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    transition: var(--transition-base);
}

.footer-socials a:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
    background: var(--accent-subtle);
    transform: translateY(-3px);
}

/* ===== BACK TO TOP ===== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    background: var(--accent-gradient);
    color: #fff;
    border: none;
    cursor: pointer;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: var(--transition-base);
    box-shadow: var(--shadow-glow);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    transform: translateY(-4px);
    box-shadow: 0 6px 25px rgba(79, 70, 229, 0.25);
}

/* ===== MOBILE OVERLAY ===== */
.nav-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, .3);
    backdrop-filter: blur(4px);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-base);
}

.nav-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* ===== RESPONSIVE ===== */
@media(max-width:1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 48px;
    }

    .hero-description {
        margin: 0 auto;
    }

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

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

    .hero-image {
        order: -1;
    }

    .image-wrapper {
        width: 280px;
        height: 350px;
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .education-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .contact-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
}

@media(max-width:768px) {
    :root {
        --section-padding: 80px 0;
    }

    .nav-toggle {
        display: block;
    }

    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 75%;
        max-width: 300px;
        height: 100vh;
        background: var(--bg-card);
        flex-direction: column;
        align-items: flex-start;
        padding: 80px 24px 24px;
        gap: 4px;
        transition: right 0.4s ease;
        border-left: 1px solid var(--border-color);
        box-shadow: var(--shadow-lg);
    }

    .nav-links.active {
        right: 0;
    }

    .nav-link {
        width: 100%;
        padding: 12px 16px;
        font-size: 1rem;
    }

    .hero {
        padding-top: 80px;
    }

    .hero-name {
        font-size: clamp(1.6rem, 6vw, 2.4rem);
    }

    .hero-stats {
        gap: 32px;
    }

    .stat-number {
        font-size: 1.8rem;
    }

    .image-wrapper {
        width: 240px;
        height: 300px;
    }

    .floating-badge {
        font-size: 0.75rem;
        padding: 8px 12px;
    }

    .badge-1 { right: -10px; }
    .badge-2 { left: -20px; }
    .badge-3 { right: 10px; }

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

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

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

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

    .timeline {
        padding-left: 32px;
    }

    .timeline::before {
        left: 10px;
    }

    .timeline-dot {
        left: -32px;
        width: 24px;
        height: 24px;
    }

    .timeline-dot i {
        font-size: 0.6rem;
    }

    .timeline-header {
        flex-direction: column;
    }

    .scroll-indicator {
        display: none;
    }
}

@media(max-width:480px) {
    .hero-cta {
        flex-direction: column;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }

    .hero-stats {
        flex-wrap: wrap;
        gap: 24px;
    }

    .contact-card {
        padding: 16px;
    }

    .contact-form-wrapper {
        padding: 24px;
    }

    .footer-logo {
        font-size: 1.2rem;
    }
}