:root {
    /* Light Theme */
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-card: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-tertiary: #94a3b8;
    --border: #e2e8f0;
    --primary: #3b82f6;
    --primary-dark: #2563eb;
    --secondary: #8b5cf6;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 20px 40px -10px rgba(0, 0, 0, 0.15);
    --radius: 12px;
    --radius-sm: 8px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="dark"] {
    /* Dark Theme */
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-card: #1e293b;
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-tertiary: #94a3b8;
    --border: #334155;
    --primary: #60a5fa;
    --primary-dark: #3b82f6;
    --shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 20px 40px -10px rgba(0, 0, 0, 0.4);
}

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

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    transition: var(--transition);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
    width: 100%;
}

/* Base Mobile Styles */
.section-title {
    font-size: 1.75rem;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-align: center;
}

.section-subtitle {
    color: var(--text-secondary);
    font-size: 1rem;
    margin-bottom: 2rem;
    text-align: center;
    line-height: 1.6;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.875rem 1.5rem;
    border-radius: var(--radius);
    font-weight: 600;
    font-size: 0.95rem;
    text-decoration: none;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    gap: 0.5rem;
    width: 100%;
    max-width: 300px;
    margin: 0.5rem auto;
}

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

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

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

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

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

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

/* Navigation - Mobile First */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--bg-primary);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    z-index: 1000;
    padding: 0.75rem 0;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 1rem;
}

.logo {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: none;
    position: fixed;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-primary);
    flex-direction: column;
    padding: 1rem;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow);
    z-index: 999;
}

.nav-links.active {
    display: flex;
}

.nav-links li {
    width: 100%;
    text-align: center;
    list-style: none;
}

.nav-links a {
    display: block;
    padding: 0.75rem;
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    border-bottom: 1px solid var(--border);
}

.nav-links a:hover {
    color: var(--primary);
    background: var(--bg-secondary);
}

#theme-toggle {
    background: var(--bg-secondary);
    border: none;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--text-primary);
    transition: var(--transition);
    margin-left: 0.5rem;
}

#theme-toggle:hover {
    background: var(--primary);
    color: white;
}

.menu-toggle {
    display: block;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-primary);
    cursor: pointer;
    padding: 0.25rem;
}

/* Hero Section - Mobile First */
.hero {
    padding: 6rem 0 3rem;
    background: var(--bg-primary);
}

.hero .container {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.hero-content {
    text-align: center;
    order: 1;
}

.hero-image {
    order: 2;
}

.hero-title {
    font-size: 1.75rem;
    margin-bottom: 1rem;
    line-height: 1.3;
}

.gradient-text {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.6;
    padding: 0 0.5rem;
}

.hero-contact {
    margin: 1.5rem 0;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    align-items: center;
}

.contact-info span {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.contact-info i {
    color: var(--primary);
    font-size: 1rem;
}

.hero-buttons {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 2rem;
    align-items: center;
}

.hero-buttons .btn {
    max-width: 280px;
}

.hero-stats {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    align-items: center;
}

.stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin-top: 0.25rem;
}

/* Code Window */
.code-window {
    background: var(--bg-secondary);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    max-width: 100%;
}

.window-header {
    background: var(--bg-card);
    padding: 0.75rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    border-bottom: 1px solid var(--border);
}

.window-dots {
    display: flex;
    gap: 0.375rem;
}

.dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.dot.red { background: #f87171; }
.dot.yellow { background: #fbbf24; }
.dot.green { background: #10b981; }

.window-title {
    color: var(--text-secondary);
    font-family: 'Fira Code', monospace;
    font-size: 0.85rem;
}

.window-content {
    padding: 1.5rem;
    font-family: 'Fira Code', monospace;
    overflow-x: auto;
    font-size: 0.85rem;
}

.window-content pre {
    margin: 0;
    white-space: pre-wrap;
    word-wrap: break-word;
}

.window-content code {
    color: var(--text-primary);
    line-height: 1.5;
}

/* Applications Section */
.applications {
    padding: 3rem 0;
    background: var(--bg-secondary);
}

.ai-methodology-badge {
    background: linear-gradient(135deg, #8b5cf6 0%, #7c3aed 100%);
    color: white;
    padding: 0.875rem 1rem;
    border-radius: var(--radius);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    font-weight: 500;
    font-size: 0.9rem;
    text-align: center;
    flex-wrap: wrap;
}

.filter-buttons {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-bottom: 2rem;
    justify-content: center;
    overflow-x: auto;
    padding-bottom: 0.5rem;
}

.filter-btn {
    padding: 0.5rem 1rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 50px;
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.85rem;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

.filter-btn:hover, .filter-btn.active {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

/* Projects Grid - Mobile First */
.projects-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.project-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    margin: 0 0.25rem;
}

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

.project-header {
    padding: 0.875rem 1rem 0;
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.project-badge {
    padding: 0.25rem 0.75rem;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    white-space: nowrap;
}

.project-badge.featured {
    background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%);
    color: white;
}

.project-badge.domain {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: white;
}

.project-badge.web3 {
    background: linear-gradient(135deg, #6366f1 0%, #4f46e5 100%);
    color: white;
}

.project-badge.ai {
    background: linear-gradient(135deg, #8b5cf6 0%, #7c3aed 100%);
    color: white;
}

.project-badge.mobile {
    background: linear-gradient(135deg, #06b6d4 0%, #0891b2 100%);
    color: white;
}

.project-badge.business {
    background: linear-gradient(135deg, #64748b 0%, #475569 100%);
    color: white;
}

.project-badge.ecommerce {
    background: linear-gradient(135deg, #f97316 0%, #ea580c 100%);
    color: white;
}

.project-badge.cloud {
    background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
    color: white;
}

.project-badge.flask {
    background: linear-gradient(135deg, #ffde57 0%, #3776ab 100%);
    color: #333;
}

.project-badge.aws {
    background: linear-gradient(135deg, #ff9900 0%, #146eb4 100%);
    color: white;
}

/* New badge styles for BuildFolio */
.project-badge.web-app {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.project-badge.portal {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    color: white;
}

.project-content {
    padding: 1rem;
    flex-grow: 1;
}

.project-title {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
    line-height: 1.3;
}

.project-description {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    line-height: 1.5;
    font-size: 0.95rem;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.375rem;
    margin-bottom: 0.75rem;
}

.tech-tag {
    padding: 0.25rem 0.75rem;
    background: var(--bg-secondary);
    color: var(--text-secondary);
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 500;
    border: 1px solid var(--border);
    transition: var(--transition);
}

.tech-tag:hover {
    background-color: var(--primary);
    color: white;
    transform: translateY(-2px);
}

/* Project features styling for BuildFolio */
.project-features {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 12px;
    margin-bottom: 10px;
}

.feature {
    background-color: var(--bg-secondary);
    color: var(--text-secondary);
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 5px;
    border: 1px solid var(--border);
    transition: var(--transition);
}

.feature:hover {
    border-color: var(--primary);
    transform: translateY(-1px);
}

.feature i {
    color: var(--success);
    font-size: 0.8rem;
}

.ai-tools {
    display: flex;
    flex-wrap: wrap;
    gap: 0.375rem;
    margin-top: 0.75rem;
}

.ai-tool {
    padding: 0.25rem 0.625rem;
    background: rgba(139, 92, 246, 0.1);
    color: #8b5cf6;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
    border: 1px solid rgba(139, 92, 246, 0.3);
    transition: var(--transition);
}

.ai-tool:hover {
    background: rgba(139, 92, 246, 0.2);
    transform: translateY(-1px);
}

.project-footer {
    padding: 0.875rem 1rem;
    border-top: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    gap: 1rem;
    align-items: flex-start;
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    transition: var(--transition);
}

.project-link:hover {
    gap: 0.75rem;
}

.deployment-badge {
    padding: 0.375rem 0.875rem;
    background: var(--bg-secondary);
    color: var(--text-secondary);
    border-radius: 50px;
    font-size: 0.8rem;
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    align-self: flex-end;
}

.deployment-badge.netlify {
    background: linear-gradient(135deg, #00c7b7 0%, #00ad9c 100%);
    color: white;
}

.deployment-badge.vercel {
    background: linear-gradient(135deg, #000000 0%, #333333 100%);
    color: white;
}

.deployment-badge.github {
    background: linear-gradient(135deg, #333333 0%, #000000 100%);
    color: white;
}

.deployment-badge.pythonanywhere {
    background: linear-gradient(135deg, #00aaff 0%, #0077cc 100%);
    color: white;
}

/* Impact rating styling for BuildFolio */
.impact-rating {
    display: flex;
    align-items: center;
    gap: 5px;
    margin-top: 10px;
}

.impact-rating i {
    color: #fbbf24;
    font-size: 0.9rem;
}

.impact-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-left: 5px;
    font-weight: 500;
}

.text-center {
    text-align: center;
}

/* AI Expertise Section */
.ai-expertise {
    padding: 3rem 0;
    background: var(--bg-primary);
}

.methodology-cards {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.methodology-card {
    background: var(--bg-card);
    padding: 1.5rem;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    transition: var(--transition);
    text-align: center;
}

.methodology-card:hover {
    transform: translateY(-4px);
    border-color: var(--primary);
}

.methodology-icon {
    font-size: 2rem;
    color: var(--primary);
    margin-bottom: 1rem;
}

.methodology-card h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.methodology-card p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    line-height: 1.5;
}

.llm-list, .tool-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    justify-content: center;
    margin-top: 1rem;
}

.llm-item, .tool-item {
    padding: 0.5rem 0.875rem;
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 500;
}

.llm-item.chatgpt { background: rgba(16, 163, 127, 0.1); color: #10a37f; }
.llm-item.gemini { background: rgba(66, 133, 244, 0.1); color: #4285f4; }
.llm-item.deepseek { background: rgba(0, 0, 0, 0.1); color: #000; }
.llm-item.qwen { background: rgba(255, 87, 34, 0.1); color: #ff5722; }
.llm-item.claude { background: rgba(139, 92, 246, 0.1); color: #8b5cf6; }

.methodology-list {
    text-align: left;
    padding-left: 1.25rem;
    color: var(--text-secondary);
    margin-top: 1rem;
}

.methodology-list li {
    margin-bottom: 0.5rem;
    line-height: 1.5;
    font-size: 0.95rem;
}

.technical-skills {
    margin-top: 2rem;
}

.technical-skills h3 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
    text-align: center;
}

.skills-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

.skill-category {
    background: var(--bg-card);
    padding: 1.25rem;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    text-align: center;
}

.skill-category h4 {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
    font-size: 1.1rem;
}

.skill-items {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    justify-content: center;
}

.skill-items span {
    padding: 0.5rem 0.875rem;
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-primary);
}

/* Experience Section */
.experience {
    padding: 3rem 0;
    background: var(--bg-secondary);
}

.timeline {
    position: relative;
    padding-left: 1.5rem;
    margin: 2rem 0;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--primary);
    opacity: 0.3;
}

.timeline-item {
    position: relative;
    margin-bottom: 2rem;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -1.5rem;
    top: 0;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--primary);
    border: 3px solid var(--bg-primary);
}

.timeline-date {
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
}

.timeline-content {
    background: var(--bg-card);
    padding: 1.25rem;
    border-radius: var(--radius);
    border: 1px solid var(--border);
}

.timeline-content h3 {
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
    line-height: 1.3;
}

.timeline-content h4 {
    color: var(--text-secondary);
    font-weight: 500;
    margin-bottom: 1rem;
    font-size: 0.95rem;
}

.timeline-content ul {
    padding-left: 1.25rem;
    color: var(--text-secondary);
}

.timeline-content li {
    margin-bottom: 0.5rem;
    line-height: 1.5;
    font-size: 0.95rem;
}

.education-certifications {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    margin-top: 2rem;
}

.edu-item, .certifications {
    background: var(--bg-card);
    padding: 1.25rem;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    text-align: center;
}

.edu-item h4, .certifications h3 {
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.edu-item p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.cert-grid {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-top: 1rem;
    align-items: center;
}

.cert-item {
    padding: 0.75rem 1.25rem;
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
    font-weight: 500;
    color: var(--text-primary);
    font-size: 0.95rem;
    width: 100%;
    max-width: 300px;
}

/* Contact Section */
.contact {
    padding: 3rem 0;
    background: var(--bg-primary);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.contact-method {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 0.75rem;
    padding: 1.25rem;
    background: var(--bg-card);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    transition: var(--transition);
}

.contact-method:hover {
    transform: translateY(-4px);
    border-color: var(--primary);
}

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

.contact-method h3 {
    font-size: 1.1rem;
    margin-bottom: 0.25rem;
    color: var(--text-primary);
}

.contact-method p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.5;
}

.contact-form {
    background: var(--bg-card);
    padding: 1.5rem;
    border-radius: var(--radius);
    border: 1px solid var(--border);
}

.form-group {
    margin-bottom: 1.25rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.875rem 1rem;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: 'Inter', sans-serif;
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

/* Footer */
.footer {
    background: var(--bg-secondary);
    padding: 3rem 0 1.5rem;
    border-top: 1px solid var(--border);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
    text-align: center;
}

.footer-brand h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.footer-brand p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.5;
}

.footer-tagline {
    font-style: italic;
    margin-top: 0.5rem;
    color: var(--text-tertiary);
    font-size: 0.9rem;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    align-items: center;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--primary);
    transform: translateX(5px);
}

.footer-stats {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    align-items: center;
}

.footer-stats .stat {
    align-items: center;
}

.footer-stats .stat-number {
    font-size: 2.5rem;
}

.footer-stats span:last-child {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.footer-bottom {
    text-align: center;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border);
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Tablet Styles */
@media (min-width: 768px) {
    .container {
        padding: 0 1.5rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .btn {
        width: auto;
        max-width: none;
        margin: 0.5rem;
    }
    
    .hero-buttons {
        flex-direction: row;
        justify-content: center;
    }
    
    .hero-stats {
        flex-direction: row;
        justify-content: center;
        gap: 2rem;
    }
    
    .projects-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .methodology-cards {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .skills-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .contact-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .contact-method {
        flex-direction: row;
        text-align: left;
        align-items: flex-start;
    }
    
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
        text-align: left;
    }
    
    .footer-links {
        align-items: flex-start;
    }
    
    .footer-stats {
        flex-direction: row;
        justify-content: space-around;
    }
    
    /* Update project footer for BuildFolio layout on tablet */
    .project-footer {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
    }
    
    .impact-rating {
        margin-top: 0;
        margin-left: auto;
        margin-right: 0;
    }
}

/* Desktop Styles */
@media (min-width: 1024px) {
    .container {
        padding: 0 2rem;
    }
    
    .section-title {
        font-size: 2.5rem;
    }
    
    .section-subtitle {
        font-size: 1.1rem;
    }
    
    .hero .container {
        flex-direction: row;
        align-items: center;
    }
    
    .hero-content {
        text-align: left;
        order: 1;
        flex: 1;
    }
    
    .hero-image {
        order: 2;
        flex: 1;
    }
    
    .hero-title {
        font-size: 2.5rem;
        text-align: left;
    }
    
    .hero-subtitle {
        text-align: left;
        padding: 0;
    }
    
    .contact-info {
        align-items: flex-start;
    }
    
    .hero-buttons {
        justify-content: flex-start;
    }
    
    .hero-stats {
        justify-content: flex-start;
    }
    
    .projects-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .methodology-cards {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .nav-links {
        display: flex;
        position: static;
        flex-direction: row;
        background: transparent;
        padding: 0;
        border: none;
        box-shadow: none;
    }
    
    .nav-links a {
        border: none;
        padding: 0.5rem;
    }
    
    .nav-links a:hover {
        background: transparent;
    }
    
    .menu-toggle {
        display: none;
    }
    
    .timeline {
        padding-left: 2rem;
    }
    
    .timeline-item::before {
        left: -2.1rem;
    }
    
    .education-certifications {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-content {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Large Desktop Styles */
@media (min-width: 1200px) {
    .container {
        max-width: 1200px;
        margin: 0 auto;
    }
    
    .hero-title {
        font-size: 3rem;
    }
}

/* AI & Automation Badges */
.project-badge.vapi {
    background: linear-gradient(135deg, #6366f1 0%, #4f46e5 100%);
    color: white;
}

.project-badge.trillio {
    background: linear-gradient(135deg, #8b5cf6 0%, #7c3aed 100%);
    color: white;
}

.project-badge.vectorshift {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: white;
}

.project-badge.zapier {
    background: linear-gradient(135deg, #ff4a00 0%, #e63e00 100%);
    color: white;
}

.project-badge.huggingface {
    background: linear-gradient(135deg, #ffd21e 0%, #ffc107 100%);
    color: #333;
}