/* ===================================
   CSS Variables & Design Tokens
   =================================== */
:root {
    /* Colors - Light Mode (Monochrome) */
    --color-primary: #000000;
    --color-secondary: #666666;
    --color-accent: #333333;
    
    --color-bg-primary: #FFFFFF;
    --color-bg-secondary: #FAFAFA;
    --color-bg-tertiary: #F5F5F5;
    --color-surface: #FFFFFF;
    
    --color-text-primary: #000000;
    --color-text-secondary: #666666;
    --color-text-tertiary: #999999;
    
    --color-border: #E5E5E5;
    --color-border-light: #F0F0F0;
    --color-border-dark: #CCCCCC;
    
    /* Shadows - Minimal */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 2px 4px 0 rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 4px 8px 0 rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 8px 16px 0 rgba(0, 0, 0, 0.12);
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-display: 'Space Grotesk', var(--font-primary);
    
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;
    --font-size-5xl: 3.5rem;
    --font-size-6xl: 4.5rem;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    --spacing-4xl: 6rem;
    --spacing-5xl: 8rem;
    
    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    --radius-xl: 0.75rem;
    --radius-2xl: 1rem;
    
    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Layout */
    --container-max-width: 1200px;
    --navbar-height: 80px;
}

/* Dark Mode Variables */
[data-theme="dark"] {
    --color-bg-primary: #0A0A0A;
    --color-bg-secondary: #121212;
    --color-bg-tertiary: #1A1A1A;
    --color-surface: #121212;
    
    --color-text-primary: #FFFFFF;
    --color-text-secondary: #AAAAAA;
    --color-text-tertiary: #666666;
    
    --color-border: #2A2A2A;
    --color-border-light: #1A1A1A;
    --color-border-dark: #3A3A3A;
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 2px 4px 0 rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 4px 8px 0 rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 8px 16px 0 rgba(0, 0, 0, 0.6);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    line-height: 1.7;
    color: var(--color-text-primary);
    background-color: var(--color-bg-primary);
    transition: background-color var(--transition-base), color var(--transition-base);
    overflow-x: hidden;
}

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

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

ul {
    list-style: none;
}

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

/* ===================================
   Utility Classes
   =================================== */
.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
}

.section {
    padding: var(--spacing-5xl) 0;
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

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

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

/* ===================================
   Navigation
   =================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--navbar-height);
    background-color: var(--color-bg-primary);
    border-bottom: 1px solid var(--color-border);
    z-index: 1000;
    transition: all var(--transition-base);
}

.navbar.scrolled {
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
}

[data-theme="dark"] .navbar.scrolled {
    background-color: rgba(10, 10, 10, 0.95);
}

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

.logo {
    font-family: var(--font-display);
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--color-text-primary);
}

.nav-menu {
    display: flex;
    gap: var(--spacing-2xl);
}

.nav-link {
    font-size: var(--font-size-sm);
    font-weight: 400;
    color: var(--color-text-secondary);
    position: relative;
    padding: var(--spacing-xs) 0;
    font-family: 'Courier New', monospace;
}

.nav-link::before {
    content: '// ';
    color: var(--color-text-tertiary);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--color-text-primary);
    transition: width var(--transition-base);
}

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

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

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

.theme-toggle {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    background-color: transparent;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    transition: all var(--transition-base);
}

.theme-toggle:hover {
    border-color: var(--color-text-primary);
    color: var(--color-text-primary);
}

.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    width: 30px;
    height: 30px;
    justify-content: center;
}

.mobile-toggle span {
    width: 100%;
    height: 2px;
    background-color: var(--color-text-primary);
    transition: all var(--transition-base);
}

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

.hero-background {
    display: none; /* Remove gradient orbs */
}

.hero-container {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-xl);
    max-width: 900px;
}

.hero-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.hero-tag {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
    width: fit-content;
    animation-delay: 0.1s;
}

.tag-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background-color: var(--color-text-primary);
}

.hero-title {
    font-family: var(--font-display);
    font-size: var(--font-size-6xl);
    font-weight: 700;
    line-height: 1.1;
    color: var(--color-text-primary);
    animation-delay: 0.2s;
    letter-spacing: -0.02em;
}

.hero-subtitle {
    font-size: var(--font-size-2xl);
    color: var(--color-text-secondary);
    font-weight: 400;
    line-height: 1.5;
    animation-delay: 0.3s;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    animation-delay: 0.4s;
    margin-top: var(--spacing-lg);
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--radius-md);
    font-weight: 500;
    font-size: var(--font-size-sm);
    transition: all var(--transition-base);
    cursor: pointer;
}

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

.btn-primary:hover {
    background: transparent;
    color: var(--color-text-primary);
}

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

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

.hero-social {
    display: flex;
    gap: var(--spacing-md);
    animation-delay: 0.5s;
}

.social-link {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    transition: all var(--transition-base);
}

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

.hero-image {
    display: none; /* Minimize or remove profile image */
}

.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-2xl);
    left: 50%;
    transform: translateX(-50%);
}

.mouse {
    width: 24px;
    height: 36px;
    border: 2px solid var(--color-border);
    border-radius: 12px;
    display: flex;
    justify-content: center;
    padding-top: 6px;
}

.wheel {
    width: 3px;
    height: 6px;
    background-color: var(--color-text-tertiary);
    border-radius: 2px;
    animation: scroll 1.5s ease-in-out infinite;
}

@keyframes scroll {
    0% {
        opacity: 1;
        transform: translateY(0);
    }
    100% {
        opacity: 0;
        transform: translateY(10px);
    }
}

/* ===================================
   Section Headers
   =================================== */
.section-header {
    margin-bottom: var(--spacing-4xl);
}

.section-tag {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: var(--font-size-xs);
    font-weight: 500;
    margin-bottom: var(--spacing-md);
    color: var(--color-text-secondary);
    font-family: 'Courier New', monospace;
}

.section-tag::before {
    content: '// ';
}

.section-title {
    font-family: var(--font-display);
    font-size: var(--font-size-4xl);
    font-weight: 700;
    color: var(--color-text-primary);
    letter-spacing: -0.02em;
}

/* ===================================
   About Section
   =================================== */
.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-4xl);
    align-items: start;
}

.about-image {
    position: relative;
}

.about-image img {
    width: 100%;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
}

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

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

.stat-item h3 {
    font-family: var(--font-display);
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--color-text-primary);
}

.stat-item p {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-top: var(--spacing-xs);
}

.about-text {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.lead {
    font-size: var(--font-size-xl);
    font-weight: 400;
    color: var(--color-text-primary);
    line-height: 1.6;
}

.about-text p {
    color: var(--color-text-secondary);
    line-height: 1.8;
}

.about-highlights {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

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

.highlight-item i {
    color: var(--color-text-primary);
    font-size: var(--font-size-base);
}

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

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

.skill-category {
    background-color: var(--color-surface);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    transition: all var(--transition-base);
}

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

.category-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-xl);
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-lg);
}

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

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.skill-tag {
    padding: var(--spacing-xs) var(--spacing-md);
    background-color: transparent;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
    transition: all var(--transition-base);
}

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

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

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 1px;
    background: var(--color-border);
}

.timeline-item {
    position: relative;
    padding-left: var(--spacing-3xl);
    padding-bottom: var(--spacing-3xl);
}

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

.timeline-dot {
    position: absolute;
    left: -4px;
    top: 0;
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: var(--color-text-primary);
    border: 2px solid var(--color-bg-primary);
}

.timeline-content {
    background-color: var(--color-surface);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    transition: all var(--transition-base);
}

.timeline-content:hover {
    border-color: var(--color-text-primary);
}

.timeline-date {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: var(--font-size-xs);
    font-weight: 500;
    margin-bottom: var(--spacing-md);
    font-family: 'Courier New', monospace;
}

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

.timeline-content h4 {
    color: var(--color-text-secondary);
    font-weight: 500;
    margin-bottom: var(--spacing-md);
}

.timeline-content p {
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
}

.achievement-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.achievement-list li {
    padding-left: var(--spacing-lg);
    position: relative;
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
}

.achievement-list li::before {
    content: '—';
    position: absolute;
    left: 0;
    color: var(--color-text-tertiary);
}

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

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-2xl);
}

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

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

.project-image {
    position: relative;
    overflow: hidden;
    aspect-ratio: 16 / 10;
    border-bottom: 1px solid var(--color-border);
}

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

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

.project-overlay {
    display: none; /* Simplified - no overlay */
}

.project-content {
    padding: var(--spacing-xl);
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-md);
}

.tag {
    padding: 4px var(--spacing-sm);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
    font-family: 'Courier New', monospace;
}

.project-content h3 {
    font-family: var(--font-display);
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.project-content p {
    color: var(--color-text-secondary);
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-sm);
}

.project-links {
    display: flex;
    gap: var(--spacing-md);
}

.link-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: var(--font-size-xs);
    font-weight: 500;
    color: var(--color-text-secondary);
    transition: all var(--transition-base);
}

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

/* ===================================
   Education Section
   =================================== */
.education-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: var(--spacing-xl);
    max-width: 900px;
    margin: 0 auto;
}

.education-card {
    display: flex;
    gap: var(--spacing-lg);
    padding: var(--spacing-2xl);
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

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

.edu-icon {
    width: 48px;
    height: 48px;
    min-width: 48px;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-xl);
    color: var(--color-text-primary);
}

.edu-content h3 {
    font-family: var(--font-display);
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.edu-content h4 {
    color: var(--color-text-secondary);
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
    font-size: var(--font-size-sm);
}

.edu-date {
    font-size: var(--font-size-xs);
    color: var(--color-text-tertiary);
    margin-bottom: var(--spacing-sm);
    font-family: 'Courier New', monospace;
}

.edu-content p {
    color: var(--color-text-secondary);
    line-height: 1.6;
    font-size: var(--font-size-sm);
}

/* ===================================
   Testimonials Section
   =================================== */
.testimonials {
    background-color: var(--color-bg-secondary);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-xl);
}

.testimonial-card {
    background-color: var(--color-surface);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    transition: all var(--transition-base);
}

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

.quote-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-lg);
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-lg);
}

.testimonial-text {
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-lg);
    font-style: italic;
    font-size: var(--font-size-sm);
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.testimonial-author img {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    object-fit: cover;
    border: 1px solid var(--color-border);
}

.testimonial-author h4 {
    font-weight: 600;
    margin-bottom: 2px;
    font-size: var(--font-size-sm);
}

.testimonial-author p {
    font-size: var(--font-size-xs);
    color: var(--color-text-tertiary);
}

/* ===================================
   Contact Section
   =================================== */
.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-4xl);
    align-items: start;
}

.contact-info h3 {
    font-family: var(--font-display);
    font-size: var(--font-size-2xl);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.contact-left p {
    color: var(--color-text-secondary);
    line-height: 1.8;
    font-size: var(--font-size-lg);
}

.contact-right {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2xl);
}

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.contact-method {
    display: flex;
    gap: var(--spacing-md);
}

.method-icon {
    width: 40px;
    height: 40px;
    min-width: 40px;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-base);
    color: var(--color-text-primary);
}

.contact-method h4 {
    font-weight: 600;
    margin-bottom: 4px;
    font-size: var(--font-size-sm);
}

.contact-method a,
.contact-method p {
    color: var(--color-text-secondary);
    transition: color var(--transition-base);
    font-size: var(--font-size-sm);
}

.contact-method a:hover {
    color: var(--color-text-primary);
}

.contact-social {
    display: flex;
    gap: var(--spacing-md);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

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

.form-group input,
.form-group textarea {
    padding: var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background-color: var(--color-surface);
    color: var(--color-text-primary);
    font-family: inherit;
    font-size: var(--font-size-sm);
    transition: all var(--transition-base);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-text-primary);
}

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

/* ===================================
   Footer
   =================================== */
.footer {
    background-color: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-4xl) 0 var(--spacing-xl);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 3fr;
    gap: var(--spacing-4xl);
    margin-bottom: var(--spacing-2xl);
}

.footer-brand h3 {
    font-family: var(--font-display);
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.footer-brand p {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-2xl);
}

.footer-column h4 {
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-sm);
}

.footer-column ul {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.footer-column a {
    color: var(--color-text-secondary);
    transition: color var(--transition-base);
    font-size: var(--font-size-sm);
}

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

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

.footer-bottom i {
    color: var(--color-text-primary);
}

/* ===================================
   Responsive Design
   =================================== */
@media (max-width: 1024px) {
    :root {
        --font-size-6xl: 3.5rem;
        --font-size-5xl: 2.5rem;
        --font-size-4xl: 2rem;
    }
    
    .hero-container,
    .about-content,
    .contact-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }
}

@media (max-width: 768px) {
    :root {
        --navbar-height: 70px;
        --spacing-5xl: 5rem;
        --spacing-4xl: 3rem;
    }
    
    .mobile-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: var(--navbar-height);
        left: 0;
        right: 0;
        background-color: var(--color-bg-primary);
        border-bottom: 1px solid var(--color-border);
        flex-direction: column;
        padding: var(--spacing-lg);
        gap: var(--spacing-md);
        transform: translateY(-100%);
        opacity: 0;
        transition: all var(--transition-base);
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
    }
    
    .hero-title {
        font-size: var(--font-size-4xl);
    }
    
    .hero-subtitle {
        font-size: var(--font-size-lg);
    }
    
    .section-title {
        font-size: var(--font-size-3xl);
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-sm);
        text-align: center;
    }
    
    .education-grid {
        grid-template-columns: 1fr;
    }
    
    .about-stats {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-md);
    }
    
    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .about-highlights {
        grid-template-columns: 1fr;
    }
    
    .timeline::before {
        left: 8px;
    }
    
    .timeline-item {
        padding-left: var(--spacing-2xl);
    }
}

/* ===================================
   Scroll Animations
   =================================== */
.reveal {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.5s ease-out;
}

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