/* Modern CV Website Styles */

/* CSS Custom Properties (Variables) */
:root {
    /* Color Mode Detection */
    color-scheme: dark light;
}

/* Dark Theme (Default) */
:root,
:root[data-theme="dark"] {
    --color-bg: #0a0a0b;
    --color-surface: #111114;
    --color-surface-elevated: #1a1a1e;
    --color-surface-hover: #242428;
    --color-border: #2d2d32;
    --color-text: #ffffff;
    --color-text-muted: #b4b4b9;
    --color-text-dim: #8a8a8f;
    --color-primary: #3b82f6;
    --color-primary-hover: #2563eb;
    --color-primary-light: rgba(59, 130, 246, 0.1);
    --color-secondary: #6366f1;
    --color-secondary-hover: #4f46e5;
    --color-accent: #10b981;
    --color-accent-hover: #059669;
    --color-success: #10b981;
    --color-success-bg: rgba(16, 185, 129, 0.1);
    --color-warning: #f59e0b;
    --color-warning-bg: rgba(245, 158, 11, 0.1);
    --color-error: #ef4444;
    --color-error-bg: rgba(239, 68, 68, 0.1);
    
    /* Dark theme shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 20px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.6);
}

/* Light Theme */
:root[data-theme="light"] {
    --color-bg: #ffffff;
    --color-surface: #f8fafc;
    --color-surface-elevated: #f1f5f9;
    --color-surface-hover: #e2e8f0;
    --color-border: #e2e8f0;
    --color-text: #1e293b;
    --color-text-muted: #64748b;
    --color-text-dim: #94a3b8;
    --color-primary: #3b82f6;
    --color-primary-hover: #2563eb;
    --color-primary-light: rgba(59, 130, 246, 0.1);
    --color-secondary: #6366f1;
    --color-secondary-hover: #4f46e5;
    --color-accent: #10b981;
    --color-accent-hover: #059669;
    --color-success: #10b981;
    --color-success-bg: rgba(16, 185, 129, 0.1);
    --color-warning: #f59e0b;
    --color-warning-bg: rgba(245, 158, 11, 0.1);
    --color-error: #ef4444;
    --color-error-bg: rgba(239, 68, 68, 0.1);
    
    /* Light theme shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 20px rgba(0, 0, 0, 0.15);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.2);
}

/* Common Variables */
:root {
    /* Typography */
    --font-family-primary: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    --font-family-mono: "SF Mono", Monaco, "Cascadia Code", "Roboto Mono", Consolas, "Courier New", monospace;

    /* Spacing Scale */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    --spacing-4xl: 6rem;
    --spacing-5xl: 8rem;

    /* Border Radius */
    --border-radius-sm: 4px;
    --border-radius-md: 8px;
    --border-radius-lg: 12px;
    --border-radius-xl: 16px;
    --border-radius-full: 9999px;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* Layout */
    --navbar-height: 70px;
    --container-max-width: 1280px;
}

/* Reset and Base Styles */
html {
    scroll-behavior: smooth;
    font-size: 16px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

body {
    font-family: var(--font-family-primary);
    background-color: var(--color-bg);
    color: var(--color-text);
    padding-top: var(--navbar-height);
    line-height: 1.6;
}

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-family-primary);
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.025em;
    color: var(--color-text);
}

h1 { font-size: 3.5rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 2rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1.125rem; }

p {
    margin-bottom: var(--spacing-md);
    line-height: 1.7;
}

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

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

/* Layout Utilities */
.container {
    width: 100%;
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

@media (min-width: 640px) {
    .container { padding: 0 var(--spacing-xl); }
}

@media (min-width: 768px) {
    .container { padding: 0 var(--spacing-2xl); }
}

@media (min-width: 1024px) {
    .container { padding: 0 var(--spacing-3xl); }
}

/* Button Styles */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 0.875rem 1.75rem;
    font-size: 1rem;
    font-weight: 500;
    line-height: 1;
    border: none;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    user-select: none;
    white-space: nowrap;
}

.btn:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

.btn--primary {
    background-color: var(--color-primary);
    color: white;
    font-weight: 600;
    box-shadow: var(--shadow-md);
}

.btn--primary:hover {
    background-color: var(--color-primary-hover);
    color: white !important;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn--secondary {
    background-color: var(--color-secondary);
    color: white;
    font-weight: 600;
}

.btn--secondary:hover {
    background-color: var(--color-secondary-hover);
    color: white !important;
    transform: translateY(-2px);
}

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

.btn--outline:hover {
    background-color: var(--color-surface-elevated);
    border-color: var(--color-primary);
}

.btn--lg {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--navbar-height);
    background-color: var(--color-surface);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
    z-index: 1000;
    transition: all var(--transition-fast);
}

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

.nav-brand {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.brand-text {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--color-text);
}

.brand-subtitle {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

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

.nav-link {
    position: relative;
    color: var(--color-text-muted);
    font-weight: 500;
    padding: var(--spacing-sm) 0;
    transition: color var(--transition-fast);
}

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

.nav-link::after {
    content: "";
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-primary);
    transition: width var(--transition-fast);
}

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

/* Theme Toggle */
.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    background: none;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    cursor: pointer;
    color: var(--color-text-muted);
    transition: all var(--transition-fast);
    margin-left: var(--spacing-md);
}

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

.theme-icon {
    transition: all var(--transition-fast);
}

/* Hide/show icons based on theme */
:root[data-theme="dark"] .theme-icon--dark,
:root[data-theme="light"] .theme-icon--light {
    display: none;
}

:root[data-theme="dark"] .theme-icon--light,
:root[data-theme="light"] .theme-icon--dark {
    display: block;
}

/* Default state */
.theme-icon--light {
    display: block;
}

.theme-icon--dark {
    display: none;
}

/* Mobile Navigation Toggle */
.nav-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    transition: background-color var(--transition-fast);
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background-color: var(--color-text);
    margin: 3px 0;
    transition: all var(--transition-fast);
    border-radius: var(--border-radius-sm);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding: var(--spacing-4xl) 0;
    overflow: hidden;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-4xl);
    align-items: center;
    position: relative;
    z-index: 2;
}

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

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: var(--color-success-bg);
    color: var(--color-success);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--border-radius-full);
    font-size: 0.875rem;
    font-weight: 600;
    width: fit-content;
    border: 1px solid var(--color-success);
}

.status-dot {
    width: 8px;
    height: 8px;
    background: var(--color-success);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

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

.hero-title {
    font-size: 3.5rem;
    line-height: 1.1;
    font-weight: 800;
    margin: 0;
}

.highlight {
    color: var(--color-primary);
    position: relative;
}

.title-secondary {
    color: var(--color-text-muted);
    font-weight: 600;
}

.hero-description {
    font-size: 1.25rem;
    color: var(--color-text-muted);
    line-height: 1.6;
    max-width: 500px;
}

.hero-stats {
    display: flex;
    gap: var(--spacing-2xl);
    margin: var(--spacing-lg) 0;
}

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

.stat-number {
    font-size: 2rem;
    font-weight: 800;
    color: var(--color-primary);
    line-height: 1;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    margin-top: var(--spacing-xs);
}

.hero-actions {
    display: flex;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

.hero-actions .btn {
    flex: 1;
    min-width: 200px;
    justify-content: center;
}

/* Hero Visual */
.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.hero-photo-container {
    position: relative;
    width: 300px;
    height: 300px;
}

.photo-frame {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    overflow: hidden;
    position: relative;
    border: 4px solid var(--color-border);
    box-shadow: var(--shadow-xl);
}

.hero-photo {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center top;
    transition: transform var(--transition-slow);
}

.hero-photo:hover {
    transform: scale(1.05);
}

.hero-photo-fallback {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    font-weight: 800;
    color: white;
}

/* Floating Elements */
.floating-elements {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.floating-card {
    position: absolute;
    background: var(--color-surface-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text);
    box-shadow: var(--shadow-md);
    animation: float 6s ease-in-out infinite;
}

.floating-card--1 {
    top: -10%;
    right: -20%;
    animation-delay: 0s;
}

.floating-card--2 {
    bottom: 10%;
    left: -25%;
    animation-delay: 2s;
}

.floating-card--3 {
    top: 60%;
    right: -30%;
    animation-delay: 4s;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(2deg); }
}

.card-icon {
    font-size: 1.25rem;
}

/* Hero Background */
.hero-background {
    position: absolute;
    inset: 0;
    overflow: hidden;
    z-index: 1;
}

.bg-grid {
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(var(--color-border) 1px, transparent 1px),
        linear-gradient(90deg, var(--color-border) 1px, transparent 1px);
    background-size: 50px 50px;
    opacity: 0.5;
    mask: radial-gradient(circle at center, white, transparent 70%);
}

.bg-gradient {
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 30% 50%, var(--color-primary-light) 0%, transparent 50%);
}

/* Section Styles */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-4xl);
}

.section-subtitle {
    display: inline-block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--spacing-md);
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-lg);
}

.section-description {
    font-size: 1.125rem;
    color: var(--color-text-muted);
    max-width: 600px;
    margin: 0 auto;
}

/* About Section */
.about-section {
    padding: var(--spacing-5xl) 0;
    background: var(--color-surface);
}

.about-grid {
    max-width: 900px;
    margin: 0 auto;
}

.about-text .lead-text {
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--color-text);
    margin-bottom: var(--spacing-xl);
}

.specialties {
    margin-top: var(--spacing-3xl);
}

.specialties h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-xl);
    text-align: center;
}

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

.specialty-item {
    display: flex;
    gap: var(--spacing-lg);
    padding: var(--spacing-xl);
    background: var(--color-surface-elevated);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--color-border);
    transition: transform var(--transition-fast);
}

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

.specialty-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.specialty-content h4 {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-sm);
}

.specialty-content p {
    font-size: 0.95rem;
    color: var(--color-text-muted);
    margin: 0;
    line-height: 1.5;
}

/* Experience Section */
.experience-section {
    padding: var(--spacing-5xl) 0;
    background: var(--color-bg);
}

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

.experience-timeline::before {
    content: "";
    position: absolute;
    left: 30px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--color-border);
}

.timeline-item {
    position: relative;
    margin-bottom: var(--spacing-4xl);
    padding-left: 80px;
}

.timeline-marker {
    position: absolute;
    left: 21px;
    top: 30px;
    width: 20px;
    height: 20px;
    background: var(--color-primary);
    border-radius: 50%;
    border: 4px solid var(--color-surface);
    z-index: 2;
}

.timeline-item[data-year]::before {
    content: attr(data-year);
    position: absolute;
    left: -60px;
    top: 25px;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transform: rotate(-90deg);
    transform-origin: center;
    white-space: nowrap;
}

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

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

.experience-header {
    margin-bottom: var(--spacing-lg);
}

.company-info {
    width: 100%;
}

.role-title {
    font-size: 1.375rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}

.company-name {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.period {
    font-size: 0.875rem;
    color: var(--color-text-muted);
}


.experience-description {
    margin-bottom: var(--spacing-lg);
}

.experience-description p {
    font-size: 1rem;
    color: var(--color-text-muted);
    line-height: 1.6;
}

.achievements {
    list-style: none;
    margin-bottom: var(--spacing-lg);
}

.achievements li {
    position: relative;
    padding-left: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-muted);
    font-size: 0.95rem;
    line-height: 1.6;
}

.achievements li::before {
    content: "▸";
    position: absolute;
    left: 0;
    color: var(--color-primary);
    font-weight: 600;
}

.tech-stack {
    background: var(--color-surface-elevated);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.tech-category {
    margin-bottom: var(--spacing-sm);
    font-size: 0.875rem;
    color: var(--color-text-muted);
    line-height: 1.5;
}

.tech-category:last-child {
    margin-bottom: 0;
}

.tech-category strong {
    color: var(--color-primary);
    font-weight: 600;
}

/* Skills Section */
.skills-section {
    padding: var(--spacing-5xl) 0;
    background: var(--color-surface);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-2xl);
    max-width: 1200px;
    margin: 0 auto;
}

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

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

.skill-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.skill-icon {
    font-size: 1.5rem;
}

.skill-header h3 {
    font-size: 1.25rem;
    margin: 0;
}

.skill-items {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.skill-item {
    background: var(--color-surface-hover);
    color: var(--color-text-muted);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    transition: all var(--transition-fast);
    border: 1px solid transparent;
}

.skill-item:hover {
    background: var(--color-primary-light);
    color: var(--color-primary);
    border-color: var(--color-primary);
    transform: translateY(-2px);
}

.skill-item--primary {
    background: var(--color-primary-light);
    color: var(--color-primary);
    border-color: var(--color-primary);
    font-weight: 600;
}

/* Contact Section */
.contact-section {
    padding: var(--spacing-5xl) 0;
    background: var(--color-bg);
}

.contact-content {
    max-width: 1000px;
    margin: 0 auto;
}

.contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-4xl);
}

.contact-card {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    transition: all var(--transition-fast);
}

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

.contact-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    background: var(--color-primary-light);
    color: var(--color-primary);
    border-radius: var(--border-radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
}

.contact-details h3 {
    font-size: 1rem;
    margin-bottom: var(--spacing-xs);
    color: var(--color-text);
}

.contact-details a {
    color: var(--color-text-muted);
    font-size: 0.95rem;
}

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

.cta-section {
    text-align: center;
    background: var(--color-surface);
    border-radius: var(--border-radius-xl);
    padding: var(--spacing-3xl);
    border: 1px solid var(--color-border);
}

.cta-content h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-lg);
}

.cta-content p {
    font-size: 1.125rem;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-2xl);
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.cta-actions {
    display: flex;
    gap: var(--spacing-lg);
    justify-content: center;
    flex-wrap: wrap;
}

/* Footer */
.footer {
    background: var(--color-surface);
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-2xl) 0;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
}

.footer-text p {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    margin: 0;
    line-height: 1.4;
}

.footer-links {
    display: flex;
    gap: var(--spacing-lg);
}

.footer-links a {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    font-weight: 500;
}

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

/* Responsive Design */
@media (max-width: 1024px) {
    .hero-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-3xl);
        text-align: center;
    }
    
    .hero-visual {
        order: -1;
    }
    
    .hero-photo-container {
        width: 250px;
        height: 250px;
    }
}

@media (max-width: 768px) {
    :root {
        --navbar-height: 60px;
    }
    
    .nav-links {
        position: fixed;
        top: var(--navbar-height);
        left: 0;
        right: 0;
        background: var(--color-surface);
        backdrop-filter: blur(20px);
        border-bottom: 1px solid var(--color-border);
        flex-direction: column;
        padding: var(--spacing-2xl);
        gap: var(--spacing-lg);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-fast);
    }
    
    .nav-links.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .nav-toggle.active span:nth-child(1) {
        transform: rotate(-45deg) translate(-5px, 6px);
    }
    
    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .nav-toggle.active span:nth-child(3) {
        transform: rotate(45deg) translate(-5px, -6px);
    }
    
    .hero {
        padding: var(--spacing-3xl) 0;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-description {
        font-size: 1.125rem;
    }
    
    .hero-stats {
        justify-content: center;
        gap: var(--spacing-xl);
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-actions .btn {
        flex: none;
        width: 100%;
        max-width: 300px;
        min-width: auto;
    }
    
    .hero-photo-container {
        width: 200px;
        height: 200px;
    }
    
    .floating-card {
        display: none;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .specialty-grid {
        grid-template-columns: 1fr;
    }
    
    .specialty-item {
        padding: var(--spacing-lg);
    }
    
    .experience-timeline::before {
        left: 15px;
    }
    
    .timeline-item {
        padding-left: 50px;
    }
    
    .timeline-marker {
        left: 6px;
        width: 18px;
        height: 18px;
    }
    
    .timeline-item[data-year]::before {
        left: -45px;
        font-size: 0.65rem;
    }
    
    .experience-card {
        padding: var(--spacing-xl);
    }
    
    .experience-header {
        margin-bottom: var(--spacing-md);
    }
    
    .contact-info {
        grid-template-columns: 1fr;
    }
    
    .contact-card {
        padding: var(--spacing-lg);
    }
    
    .cta-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .cta-actions .btn {
        width: 100%;
        max-width: 300px;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-md);
    }
    
    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }
    h3 { font-size: 1.5rem; }
    
    .container {
        padding: 0 var(--spacing-md);
    }
    
    .hero-title {
        font-size: 2rem;
        line-height: 1.2;
    }
    
    .hero-description {
        font-size: 1rem;
    }
    
    .stat-number {
        font-size: 1.5rem;
    }
    
    .hero-photo-container {
        width: 150px;
        height: 150px;
    }
    
    .section-header {
        margin-bottom: var(--spacing-3xl);
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .specialty-item {
        flex-direction: column;
        text-align: center;
        padding: var(--spacing-lg);
    }
    
    .experience-card {
        padding: var(--spacing-lg);
    }
    
    .role-title {
        font-size: 1.125rem;
    }
    
    .skills-grid {
        grid-template-columns: 1fr;
    }
    
    .skill-category {
        padding: var(--spacing-lg);
    }
    
    .cta-section {
        padding: var(--spacing-2xl);
    }
}

/* Print Styles */
@media print {
    .navbar,
    .hero-background,
    .floating-elements,
    .cta-section,
    .footer {
        display: none;
    }
    
    body {
        padding-top: 0;
        font-size: 12pt;
        color: #000;
        background: #fff;
    }
    
    .hero {
        min-height: auto;
        padding: 2rem 0;
    }
    
    .hero-grid {
        grid-template-columns: auto 200px;
        gap: 2rem;
    }
    
    .hero-photo-container {
        width: 180px;
        height: 180px;
    }
    
    .section-title {
        font-size: 1.5rem;
        color: #000;
    }
    
    .experience-timeline::before,
    .timeline-marker {
        display: none;
    }
    
    .timeline-item {
        padding-left: 0;
        margin-bottom: 1.5rem;
    }
    
    .experience-card {
        box-shadow: none;
        border: 1px solid #ddd;
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus styles for accessibility */
.btn:focus-visible,
.nav-link:focus-visible,
.theme-toggle:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* Scrollbar styling */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--color-surface);
}

::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: var(--border-radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-text-dim);
}