/* ================================================
   PROFESSIONAL PORTFOLIO - GAURAV VISHWAS
   Clean, Corporate-Grade Design
   ================================================ */

/* ============ CSS VARIABLES ============ */
:root {
    /* Colors - Professional Blue Theme */
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    --primary-bg: rgba(37, 99, 235, 0.08);
    
    --secondary: #64748b;
    --accent: #0ea5e9;
    --success: #22c55e;
    --warning: #f59e0b;
    
    /* Neutrals */
    --white: #ffffff;
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;
    
    /* Background */
    --bg-primary: var(--white);
    --bg-secondary: var(--gray-50);
    --bg-tertiary: var(--gray-100);
    
    /* Text */
    --text-primary: var(--gray-900);
    --text-secondary: var(--gray-600);
    --text-muted: var(--gray-400);
    
    /* Borders */
    --border-color: var(--gray-200);
    --border-hover: var(--gray-300);
    
    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'Source Code Pro', Consolas, Monaco, monospace;
    
    /* Spacing */
    --section-padding: 100px;
    --container-max: 1200px;
    --header-height: 72px;
    
    /* Transitions */
    --transition: 0.3s ease;
    --transition-fast: 0.15s ease;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-primary);
}

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

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

button {
    cursor: pointer;
    border: none;
    background: none;
    font-family: inherit;
}

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

ul {
    list-style: none;
}

::selection {
    background: var(--primary);
    color: var(--white);
}

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

.text-gradient {
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ============ BUTTONS ============ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    font-size: 14px;
    font-weight: 500;
    border-radius: var(--radius);
    transition: all var(--transition);
    white-space: nowrap;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    color: var(--white);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

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

.btn-secondary:hover {
    background: var(--gray-200);
    color: var(--text-primary);
    border-color: var(--border-hover);
}

.btn-lg {
    padding: 16px 32px;
    font-size: 16px;
    border-radius: var(--radius-md);
}

.btn-block {
    width: 100%;
}

/* ============ PROGRESS BAR ============ */
.progress-bar {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    background: var(--primary);
    width: 0%;
    z-index: 10000;
    transition: width 0.1s linear;
}

/* ============ HEADER ============ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid transparent;
    z-index: 1000;
    transition: all var(--transition);
}

.header.scrolled {
    border-color: var(--border-color);
    box-shadow: var(--shadow-sm);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.logo {
    display: flex;
    align-items: center;
}

.logo-text {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
}

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

.nav-link {
    padding: 8px 16px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    border-radius: var(--radius);
    transition: all var(--transition);
}

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.menu-toggle {
    display: none;
    width: 40px;
    height: 40px;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
}

.menu-toggle span {
    width: 20px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 1px;
    transition: all var(--transition);
}

.menu-toggle.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

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

.menu-toggle.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* Mobile Menu */
.mobile-menu {
    position: fixed;
    top: var(--header-height);
    left: 0;
    width: 100%;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    padding: 16px 24px;
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition);
    z-index: 999;
}

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

.mobile-nav {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.mobile-link {
    padding: 12px 16px;
    font-size: 16px;
    font-weight: 500;
    color: var(--text-secondary);
    border-radius: var(--radius);
    transition: all var(--transition);
}

.mobile-link:hover {
    background: var(--primary-bg);
    color: var(--primary);
}

@media (max-width: 1024px) {
    .nav-menu,
    .nav-actions {
        display: none;
    }
    
    .menu-toggle {
        display: flex;
    }
}

/* ============ HERO SECTION ============ */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 0 80px;
    background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
}

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

.hero-content {
    max-width: 600px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    background: var(--success);
    background: linear-gradient(135deg, rgba(34, 197, 94, 0.1), rgba(34, 197, 94, 0.05));
    border: 1px solid rgba(34, 197, 94, 0.2);
    border-radius: 100px;
    font-size: 13px;
    font-weight: 500;
    color: #16a34a;
    margin-bottom: 24px;
}

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

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.6; transform: scale(1.1); }
}

.hero-title {
    font-size: clamp(36px, 5vw, 52px);
    font-weight: 700;
    line-height: 1.15;
    color: var(--text-primary);
    margin-bottom: 20px;
    letter-spacing: -0.02em;
}

.hero-subtitle {
    font-size: 18px;
    line-height: 1.7;
    color: var(--text-secondary);
    margin-bottom: 32px;
}

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

.hero-stats {
    display: flex;
    align-items: center;
    gap: 32px;
}

.stat {
    text-align: center;
}

.stat-value {
    display: block;
    font-size: 32px;
    font-weight: 700;
    color: var(--primary);
    line-height: 1;
    margin-bottom: 4px;
}

.stat-label {
    font-size: 13px;
    color: var(--text-muted);
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--border-color);
}

/* Hero Visual - Code Card */
.hero-visual {
    display: flex;
    justify-content: flex-end;
}

.hero-card {
    width: 100%;
    max-width: 480px;
    background: var(--gray-900);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.card-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: var(--gray-800);
    border-bottom: 1px solid var(--gray-700);
}

.card-dots {
    display: flex;
    gap: 6px;
}

.card-dots span {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.card-dots span:nth-child(1) { background: #ef4444; }
.card-dots span:nth-child(2) { background: #f59e0b; }
.card-dots span:nth-child(3) { background: #22c55e; }

.card-title {
    font-size: 12px;
    color: var(--gray-400);
    font-family: var(--font-mono);
}

.card-body {
    padding: 20px;
}

.card-body pre {
    font-family: var(--font-mono);
    font-size: 13px;
    line-height: 1.7;
    color: var(--gray-300);
}

.code-keyword { color: #c678dd; }
.code-class { color: #e5c07b; }
.code-string { color: #98c379; }
.code-method { color: #61afef; }

@media (max-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-content {
        max-width: 100%;
    }
    
    .hero-cta {
        justify-content: center;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .hero-visual {
        display: none;
    }
}

@media (max-width: 640px) {
    .hero-cta {
        flex-direction: column;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 24px;
    }
    
    .stat-divider {
        width: 40px;
        height: 1px;
    }
}

/* ============ SECTIONS ============ */
.section {
    padding: var(--section-padding) 0;
}

.section-alt {
    background: var(--bg-secondary);
}

.section-header {
    margin-bottom: 60px;
}

.section-header.centered {
    text-align: center;
}

.section-label {
    display: inline-block;
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--primary);
    margin-bottom: 12px;
}

.section-title {
    font-size: clamp(28px, 4vw, 40px);
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.section-subtitle {
    max-width: 600px;
    margin: 16px auto 0;
    font-size: 17px;
    color: var(--text-secondary);
}

/* ============ ABOUT SECTION ============ */
.about-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 60px;
}

.about-content p {
    color: var(--text-secondary);
    margin-bottom: 20px;
    font-size: 16px;
    line-height: 1.8;
}

.about-lead {
    font-size: 20px !important;
    color: var(--text-primary) !important;
    font-weight: 500;
}

.about-highlights {
    margin-top: 32px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.highlight-item {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 15px;
    color: var(--text-secondary);
}

.highlight-item i {
    color: var(--success);
    font-size: 16px;
}

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

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

.info-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow);
}

.info-icon {
    width: 44px;
    height: 44px;
    background: var(--primary-bg);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-size: 18px;
    flex-shrink: 0;
}

.info-icon.linkedin {
    background: rgba(10, 102, 194, 0.1);
    color: #0a66c2;
}

.info-icon.github {
    background: rgba(36, 41, 47, 0.1);
    color: #24292f;
}

.info-content {
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.info-label {
    font-size: 12px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    margin-bottom: 2px;
}

.info-value {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

@media (max-width: 1024px) {
    .about-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

/* ============ EXPERIENCE SECTION ============ */
.timeline {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 20px;
    top: 0;
    height: 100%;
    width: 2px;
    background: var(--border-color);
}

.timeline-item {
    position: relative;
    padding-left: 60px;
    padding-bottom: 48px;
}

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

.timeline-marker {
    position: absolute;
    left: 8px;
    top: 0;
    width: 24px;
    height: 24px;
    background: var(--bg-primary);
    border: 2px solid var(--border-color);
    border-radius: 50%;
    z-index: 1;
}

.timeline-marker.current {
    background: var(--primary);
    border-color: var(--primary);
}

.marker-pulse {
    position: absolute;
    inset: -6px;
    border: 2px solid var(--primary);
    border-radius: 50%;
    animation: markerPulse 2s ease-out infinite;
}

@keyframes markerPulse {
    0% { transform: scale(1); opacity: 0.8; }
    100% { transform: scale(1.8); opacity: 0; }
}

.timeline-content {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 28px;
    transition: all var(--transition);
}

.timeline-content:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-md);
}

.timeline-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
    flex-wrap: wrap;
}

.timeline-badge {
    padding: 4px 12px;
    font-size: 12px;
    font-weight: 500;
    border-radius: 100px;
    background: var(--gray-100);
    color: var(--text-secondary);
}

.timeline-badge.current {
    background: rgba(34, 197, 94, 0.1);
    color: #16a34a;
}

.timeline-date {
    font-size: 13px;
    color: var(--text-muted);
}

.timeline-role {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.timeline-company {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
}

.company-logo {
    width: 32px;
    height: 32px;
    border-radius: var(--radius);
}

.company-name {
    font-size: 15px;
    font-weight: 500;
    color: var(--text-primary);
    display: block;
}

.company-location {
    font-size: 13px;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 4px;
}

.responsibility-list {
    margin-bottom: 20px;
}

.responsibility-list li {
    position: relative;
    padding-left: 20px;
    margin-bottom: 10px;
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}

.responsibility-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 10px;
    width: 6px;
    height: 6px;
    background: var(--primary);
    border-radius: 50%;
}

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

.timeline-tags span {
    padding: 4px 12px;
    font-size: 12px;
    font-weight: 500;
    background: var(--primary-bg);
    color: var(--primary);
    border-radius: 100px;
}

/* ============ SKILLS SECTION ============ */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.skill-category {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 28px;
    transition: all var(--transition);
}

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

.category-icon {
    width: 48px;
    height: 48px;
    background: var(--primary-bg);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-size: 20px;
    margin-bottom: 16px;
}

.category-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 20px;
}

.skill-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.skill-item {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.skill-name {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
}

.skill-bar {
    height: 6px;
    background: var(--gray-200);
    border-radius: 3px;
    overflow: hidden;
}

.skill-progress {
    height: 100%;
    background: var(--primary);
    border-radius: 3px;
    width: 0;
    transition: width 1s ease-out;
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.skill-tag {
    padding: 8px 16px;
    font-size: 14px;
    font-weight: 500;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    color: var(--text-secondary);
    transition: all var(--transition);
}

.skill-tag:hover {
    border-color: var(--primary);
    color: var(--primary);
}

@media (max-width: 768px) {
    .skills-grid {
        grid-template-columns: 1fr;
    }
}

/* Certifications */
.certifications-section {
    margin-top: 60px;
}

.subsection-title {
    font-size: 24px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 32px;
}

.cert-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

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

.cert-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow);
}

.cert-icon {
    width: 48px;
    height: 48px;
    background: var(--gray-100);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: var(--gray-500);
    flex-shrink: 0;
}

.cert-icon.google {
    background: rgba(66, 133, 244, 0.1);
    color: #4285f4;
}

.cert-icon.microsoft {
    background: rgba(0, 120, 212, 0.1);
    color: #0078d4;
}

.cert-content h4 {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.cert-content span {
    font-size: 13px;
    color: var(--text-muted);
}

@media (max-width: 1024px) {
    .cert-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .cert-grid {
        grid-template-columns: 1fr;
    }
}

/* ============ PROJECTS SECTION ============ */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

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

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

.project-card.featured {
    grid-column: span 2;
}

.project-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: var(--white);
    font-size: 13px;
    font-weight: 500;
    margin: 20px 20px 0;
    border-radius: 100px;
}

.project-content {
    padding: 24px;
}

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

.project-icon {
    width: 48px;
    height: 48px;
    background: var(--primary-bg);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-size: 20px;
}

.project-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
}

.project-description {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 20px;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 20px;
}

.project-tech span {
    padding: 4px 12px;
    font-size: 12px;
    font-weight: 500;
    font-family: var(--font-mono);
    background: var(--gray-100);
    color: var(--gray-600);
    border-radius: var(--radius);
}

.project-preview {
    position: relative;
    height: 280px;
    background: var(--gray-100);
    border-radius: var(--radius);
    overflow: hidden;
    margin-top: 20px;
}

.project-preview iframe {
    width: 100%;
    height: 100%;
    border: none;
    transform: scale(0.75);
    transform-origin: top left;
    width: 133.33%;
    height: 133.33%;
}

.preview-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.8) 0%, transparent 60%);
    display: flex;
    align-items: flex-end;
    justify-content: center;
    padding: 24px;
}

.project-links {
    display: flex;
    gap: 12px;
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    transition: all var(--transition);
}

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

@media (max-width: 1024px) {
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .project-card.featured {
        grid-column: span 1;
    }
}

/* ============ EDUCATION SECTION ============ */
.education-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.education-card {
    display: flex;
    gap: 24px;
    padding: 28px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: all var(--transition);
}

.education-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow);
}

.education-year {
    font-family: var(--font-mono);
    font-size: 14px;
    font-weight: 500;
    color: var(--primary);
    white-space: nowrap;
}

.education-content {
    flex: 1;
}

.education-degree {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.education-institution {
    font-size: 14px;
    color: var(--text-muted);
    margin-bottom: 16px;
}

.education-grade {
    display: flex;
    align-items: center;
    gap: 12px;
}

.grade-circle {
    position: relative;
    width: 56px;
    height: 56px;
}

.grade-circle svg {
    width: 100%;
    height: 100%;
    transform: rotate(-90deg);
}

.grade-bg {
    fill: none;
    stroke: var(--gray-200);
    stroke-width: 3;
}

.grade-fill {
    fill: none;
    stroke: var(--primary);
    stroke-width: 3;
    stroke-linecap: round;
    transition: stroke-dasharray 1s ease-out;
}

.grade-value {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: 600;
    color: var(--primary);
}

.grade-label {
    font-size: 13px;
    color: var(--text-muted);
}

@media (max-width: 768px) {
    .education-grid {
        grid-template-columns: 1fr;
    }
    
    .education-card {
        flex-direction: column;
        gap: 16px;
    }
}

/* ============ CONTACT SECTION ============ */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 48px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

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

.contact-card:hover {
    border-color: var(--primary);
}

.contact-icon {
    width: 44px;
    height: 44px;
    background: var(--primary-bg);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-size: 18px;
    flex-shrink: 0;
}

.contact-content h4 {
    font-size: 12px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    margin-bottom: 4px;
}

.contact-content a,
.contact-content p {
    font-size: 15px;
    font-weight: 500;
    color: var(--text-primary);
}

.relocation-tag {
    display: inline-block;
    margin-top: 8px;
    padding: 4px 10px;
    font-size: 12px;
    font-weight: 500;
    background: rgba(34, 197, 94, 0.1);
    color: #16a34a;
    border-radius: var(--radius);
}

.social-links {
    display: flex;
    gap: 12px;
    margin-top: 12px;
}

.social-link {
    width: 44px;
    height: 44px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    font-size: 18px;
    transition: all var(--transition);
}

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

.social-link.linkedin:hover {
    border-color: #0a66c2;
    color: #0a66c2;
}

.social-link.github:hover {
    border-color: var(--gray-800);
    color: var(--gray-800);
}

/* Contact Form */
.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
    padding: 32px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
}

.form-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
}

.form-group input,
.form-group textarea {
    padding: 12px 16px;
    font-size: 15px;
    font-family: inherit;
    color: var(--text-primary);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    outline: none;
    transition: all var(--transition);
}

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

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-bg);
}

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

@media (max-width: 1024px) {
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
}

@media (max-width: 640px) {
    .form-row {
        grid-template-columns: 1fr;
    }
}

/* ============ FOOTER ============ */
.footer {
    background: var(--gray-900);
    padding: 60px 0 24px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid var(--gray-700);
}

.footer-brand {
    max-width: 280px;
}

.footer-logo {
    font-size: 18px;
    font-weight: 600;
    color: var(--white);
    display: block;
    margin-bottom: 12px;
}

.footer-brand p {
    font-size: 14px;
    color: var(--gray-400);
    line-height: 1.6;
}

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

.footer-links a {
    font-size: 14px;
    color: var(--gray-400);
    transition: color var(--transition);
}

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

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

.footer-social a {
    width: 40px;
    height: 40px;
    background: var(--gray-800);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-400);
    font-size: 16px;
    transition: all var(--transition);
}

.footer-social a:hover {
    background: var(--primary);
    color: var(--white);
}

.footer-bottom {
    padding-top: 24px;
    text-align: center;
}

.footer-bottom p {
    font-size: 13px;
    color: var(--gray-500);
}

@media (max-width: 768px) {
    .footer-content {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    
    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
    }
}

/* ============ BACK TO TOP ============ */
.back-to-top {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 44px;
    height: 44px;
    background: var(--primary);
    color: var(--white);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all var(--transition);
    box-shadow: var(--shadow-lg);
    z-index: 100;
}

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

.back-to-top:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

/* ============ ANIMATIONS ============ */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease-out forwards;
}

/* ============ RESPONSIVE ============ */
@media (max-width: 640px) {
    :root {
        --section-padding: 60px;
    }
    
    .container {
        padding: 0 16px;
    }
}