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

:root {
    /* Primary Color Palette - Blue-Green */
    --primary: #2ed1a1;
    --primary-light: #4addb3;
    --primary-dark: #25b38a;
    --primary-glow: rgba(46, 209, 161, 0.3);

    /* Dark Theme Colors */
    --bg-dark: #0a0e14;
    --bg-darker: #050810;
    --bg-card: #121821;
    --bg-card-hover: #1a2332;

    /* Text Colors */
    --text-primary: #e6edf3;
    --text-secondary: #9198a1;
    --text-muted: #6e7681;

    /* Accent & Border */
    --border: #1f2937;
    --border-light: #374151;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    --gradient-bg: radial-gradient(ellipse at top, rgba(46, 209, 161, 0.05) 0%, transparent 50%);

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -2px rgba(0, 0, 0, 0.3);
    --shadow-glow: 0 0 20px var(--primary-glow), 0 0 40px var(--primary-glow);

    /* Spacing */
    --section-padding: 120px;
    --container-width: 1200px;

    /* Typography */
    --font-body: 'Space Grotesk', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'Courier New', monospace;

    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

body {
    font-family: var(--font-body);
    background-color: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

/* ===========================
   Navigation
   =========================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 14, 20, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    transition: transform var(--transition-base);
}

.navbar.hidden {
    transform: translateY(-100%);
}

.nav-container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo img {
    height: 50px;
    width: auto;
    transition: transform var(--transition-base);
}

.nav-logo:hover img {
    transform: scale(1.05);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 8px;
    align-items: center;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-weight: 500;
    font-size: 0.95rem;
    transition: all var(--transition-base);
    position: relative;
}

.nav-link:hover {
    color: var(--primary);
    background: rgba(46, 209, 161, 0.1);
}

.nav-link.btn-contact {
    background: var(--gradient-primary);
    color: white;
    margin-left: 8px;
}

.nav-link.btn-contact:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 8px;
}

.hamburger span {
    width: 25px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all var(--transition-base);
}

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

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

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ===========================
   Hero Section
   =========================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding-top: 72px;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.grid-overlay {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(var(--border) 1px, transparent 1px),
        linear-gradient(90deg, var(--border) 1px, transparent 1px);
    background-size: 50px 50px;
    opacity: 0.3;
    mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.5;
    animation: float 20s ease-in-out infinite;
}

.orb-1 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, var(--primary) 0%, transparent 70%);
    top: -200px;
    right: -100px;
}

.orb-2 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, var(--primary-dark) 0%, transparent 70%);
    bottom: -150px;
    left: -100px;
    animation-delay: -10s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, -30px) scale(1.1); }
    66% { transform: translate(-20px, 20px) scale(0.9); }
}

.hero-container {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-content {
    animation: fadeInUp 0.8s ease-out;
}

.hero-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(46, 209, 161, 0.1);
    border: 1px solid rgba(46, 209, 161, 0.3);
    border-radius: 100px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--primary);
    margin-bottom: 24px;
}

.tag-icon {
    width: 8px;
    height: 8px;
    background: var(--primary);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 16px;
    color: var(--text-primary);
}

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

.hero-subtitle {
    font-size: clamp(1.25rem, 2.5vw, 1.75rem);
    color: var(--text-secondary);
    font-weight: 500;
    margin-bottom: 20px;
}

.hero-description {
    font-size: 1.125rem;
    color: var(--text-muted);
    line-height: 1.7;
    margin-bottom: 32px;
    max-width: 540px;
}

.hero-cta {
    display: flex;
    gap: 16px;
    margin-bottom: 32px;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    transition: all var(--transition-base);
    cursor: pointer;
    border: none;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

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

.btn-secondary:hover {
    background: rgba(46, 209, 161, 0.1);
    transform: translateY(-2px);
}

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

.social-link {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 1.25rem;
    transition: all var(--transition-base);
}

.social-link:hover {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
    transform: translateY(-3px);
    box-shadow: var(--shadow-glow);
}

/* Hero Visual - Code Window */
.hero-visual {
    animation: fadeInRight 0.8s ease-out 0.2s both;
}

.code-window {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.window-header {
    background: var(--bg-darker);
    padding: 8px 12px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--border);
}

.window-buttons {
    display: flex;
    gap: 6px;
    order: 2;
}

.window-button {
    width: 18px;
    height: 18px;
    background: transparent;
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255, 255, 255, 0.6);
    font-size: 12px;
    line-height: 1;
    font-weight: 500;
}

.window-title {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: #ddd;
    order: 1;
}

.window-content {
    padding: 24px;
    font-family: var(--font-mono);
    font-size: 0.875rem;
    line-height: 1.8;
}

.code-line {
    display: flex;
    gap: 8px;
    color: var(--text-primary);
}

.prompt {
    color: var(--primary);
    font-weight: 600;
}

.command {
    color: var(--primary-light);
}

.code-output {
    color: var(--text-secondary);
    padding-left: 24px;
}

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

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

/* ===========================
   Section Styles
   =========================== */
section {
    padding: var(--section-padding) 0;
    position: relative;
}

.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-header .lead {
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-top: 24px;
    line-height: 1.6;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    color: var(--text-primary);
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -12px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

/* ===========================
   About Section
   =========================== */
.about {
    background: var(--gradient-bg);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 60px;
    align-items: start;
}

.about-text .lead {
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 24px;
    line-height: 1.6;
}

.about-text p {
    color: var(--text-secondary);
    font-size: 1.063rem;
    line-height: 1.8;
    margin-bottom: 20px;
}

.about-highlights {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.highlight-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 24px;
    transition: all var(--transition-base);
}

.highlight-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--primary);
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.highlight-card i {
    font-size: 1.5rem;
    color: var(--primary);
    margin-bottom: 12px;
}

.highlight-card h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.highlight-card p {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin: 0;
}

.highlight-card a {
    color: var(--primary);
    text-decoration: none;
}

.highlight-card a:hover {
    text-decoration: underline;
}

/* ===========================
   Experience Section
   =========================== */
.experience {
    background: var(--bg-darker);
}

.experience-timeline {
    max-width: 900px;
    margin: 0 auto;
    position: relative;
}

.timeline-line {
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--primary), transparent);
}

.timeline-item {
    position: relative;
    padding-left: 50px;
    margin-bottom: 48px;
}

.timeline-dot {
    position: absolute;
    left: -6px;
    top: 0;
    width: 14px;
    height: 14px;
    background: var(--primary);
    border-radius: 50%;
    box-shadow: 0 0 0 4px var(--bg-darker), 0 0 0 6px var(--primary-glow);
}

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

.timeline-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--primary);
    transform: translateX(8px);
    box-shadow: var(--shadow-lg);
}

.timeline-date {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--primary);
    margin-bottom: 8px;
    font-weight: 500;
}

.timeline-title {
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.timeline-company {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--primary-light);
    margin-bottom: 12px;
}

.timeline-description {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 16px;
}

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

.tag {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    padding: 4px 12px;
    background: rgba(46, 209, 161, 0.1);
    color: var(--primary);
    border: 1px solid rgba(46, 209, 161, 0.3);
    border-radius: 100px;
    font-weight: 500;
}

/* ===========================
   Skills Section
   =========================== */
.skills {
    background: var(--gradient-bg);
}

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

.skill-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.skill-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.skill-card:hover::before {
    opacity: 1;
}

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

.skill-icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(46, 209, 161, 0.1);
    border-radius: var(--radius-md);
    color: var(--primary);
    font-size: 1.75rem;
    margin-bottom: 20px;
    transition: all var(--transition-base);
}

.skill-card:hover .skill-icon {
    background: var(--primary);
    color: white;
    transform: scale(1.1) rotate(5deg);
}

.skill-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 16px;
}

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

.skill-list li {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
    color: var(--text-secondary);
    font-size: 0.938rem;
}

.skill-list li i {
    color: var(--primary);
    font-size: 0.75rem;
}

/* ===========================
   Projects Section
   =========================== */
.projects {
    background: var(--bg-darker);
}

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

.project-category {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.category-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 8px;
}

.category-header i {
    color: var(--primary);
    font-size: 1.5rem;
}

.category-header h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

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

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

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 12px;
}

.project-header h4 {
    font-size: 1.125rem;
    font-weight: 600;
}

.project-header a {
    color: var(--primary);
    text-decoration: none;
    transition: all var(--transition-base);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.project-header a:hover {
    color: var(--primary-light);
    text-shadow: 0 0 8px var(--primary-glow);
}

.project-header a i {
    font-size: 0.875rem;
}

.project-tech {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    padding: 4px 10px;
    background: rgba(46, 209, 161, 0.1);
    color: var(--primary);
    border-radius: var(--radius-sm);
    font-weight: 500;
}

.project-card p {
    color: var(--text-secondary);
    line-height: 1.6;
    font-size: 0.938rem;
}

/* ===========================
   Contact Section
   =========================== */
.contact {
    background: var(--gradient-bg);
}

.contact-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.contact-intro {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 48px;
    line-height: 1.7;
}

.contact-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 24px;
}

.contact-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 32px;
    text-decoration: none;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.contact-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform var(--transition-base);
}

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

.contact-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--primary);
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.contact-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(46, 209, 161, 0.1);
    border-radius: var(--radius-md);
    color: var(--primary);
    font-size: 1.75rem;
    transition: all var(--transition-base);
}

.contact-card:hover .contact-icon {
    background: var(--primary);
    color: white;
    transform: scale(1.1) rotate(5deg);
}

.contact-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.contact-card p {
    color: var(--text-muted);
    font-size: 0.938rem;
    margin-bottom: 12px;
}

.link-arrow {
    color: var(--primary);
    font-size: 1.5rem;
    font-weight: 700;
    transition: transform var(--transition-base);
    display: inline-block;
    margin-top: auto;
}

.contact-card:hover .link-arrow {
    transform: translateX(4px);
}

/* ===========================
   Footer
   =========================== */
.footer {
    background: var(--bg-darker);
    border-top: 1px solid var(--border);
    padding: 48px 0;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 24px;
}

.footer-content p {
    color: var(--text-muted);
    font-size: 0.938rem;
}

.footer-links {
    display: flex;
    gap: 24px;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.938rem;
    transition: color var(--transition-base);
}

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

/* ===========================
   Back to Top Button
   =========================== */
.back-to-top {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 48px;
    height: 48px;
    background: var(--gradient-primary);
    border: none;
    border-radius: 50%;
    color: white;
    font-size: 1.125rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(100px);
    transition: all var(--transition-base);
    box-shadow: var(--shadow-lg);
    z-index: 999;
}

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

.back-to-top:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
}

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

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

[data-animate] {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease-out;
}

[data-animate].animated {
    opacity: 1;
    transform: translateY(0);
}

/* ===========================
   Responsive Design
   =========================== */
@media (max-width: 1024px) {
    :root {
        --section-padding: 80px;
    }

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

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

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

@media (max-width: 768px) {
    :root {
        --section-padding: 60px;
    }

    .hamburger {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: rgba(10, 14, 20, 0.98);
        backdrop-filter: blur(12px);
        border-bottom: 1px solid var(--border);
        flex-direction: column;
        padding: 24px;
        gap: 12px;
        transform: translateX(-100%);
        transition: transform var(--transition-base);
    }

    .nav-menu.active {
        transform: translateX(0);
    }

    .nav-link {
        width: 100%;
        text-align: center;
    }

    .hero {
        min-height: auto;
        padding: 100px 0 60px;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-cta {
        flex-direction: column;
    }

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

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

    .contact-links {
        grid-template-columns: 1fr;
    }

    .footer-content {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    :root {
        --section-padding: 40px;
    }

    .container {
        padding: 0 16px;
    }

    .nav-container {
        padding: 0 16px;
    }

    .hero-title {
        font-size: 2rem;
    }

    .section-title {
        font-size: 1.75rem;
    }

    .highlight-card {
        padding: 16px;
    }

    .timeline-item {
        padding-left: 40px;
    }

    .timeline-card {
        padding: 16px;
    }

    .project-card {
        padding: 16px;
    }

    .contact-card {
        padding: 20px;
    }

    .window-content {
        padding: 16px;
        font-size: 0.75rem;
    }

    .about-text p {
        margin-bottom: 12px;
    }

    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 44px;
        height: 44px;
    }
}

/* ===========================
   Scroll Progress Indicator
   =========================== */
.scroll-progress {
    position: fixed;
    bottom: 0;
    left: 0;
    height: 3px;
    background: var(--gradient-primary);
    width: 0%;
    z-index: 998;
    box-shadow: 0 0 10px var(--primary-glow);
    transition: width 0.1s ease;
}

/* ===========================
   Loading Screen
   =========================== */
.loading-screen {
    position: fixed;
    inset: 0;
    background: var(--bg-dark);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 1;
    transition: opacity 0.5s ease;
}

.loading-screen.fade-out {
    opacity: 0;
    pointer-events: none;
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 4px solid rgba(46, 209, 161, 0.2);
    border-top: 4px solid var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}