/* CSS Custom Properties */
:root {
    /* Colors - Light Theme */
    --color-primary: #2563eb;
    --color-primary-dark: #1d4ed8;
    --color-primary-light: #3b82f6;
    --color-secondary: #2563eb;
    --color-accent: #2563eb;
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-error: #ef4444;

    /* Backgrounds */
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --bg-overlay: rgba(255, 255, 255, 0.95);
    --bg-glass: rgba(255, 255, 255, 0.1);
    --bg-gradient: var(--color-primary);
    --bg-hero: #0f172a;

    /* Text Colors */
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-tertiary: #64748b;
    --text-inverse: #ffffff;
    --text-muted: #94a3b8;

    /* Borders & Shadows */
    --border-color: #e2e8f0;
    --border-light: #f1f5f9;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-glass: 0 4px 12px 0 rgba(0, 0, 0, 0.08);

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;

    /* Typography */
    --font-family-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-family-mono: 'JetBrains Mono', 'Fira Code', 'Monaco', 'Cascadia Code', 'Roboto Mono', monospace;

    /* Font Sizes */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    --text-5xl: 3rem;
    --text-6xl: 3.75rem;

    /* Line Heights */
    --leading-tight: 1.25;
    --leading-normal: 1.5;
    --leading-relaxed: 1.625;

    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-normal: 250ms ease-in-out;
    --transition-slow: 350ms ease-in-out;

    /* Z-index */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
}

/* Dark Theme */
[data-theme="dark"] {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --bg-overlay: rgba(15, 23, 42, 0.95);
    --bg-glass: rgba(255, 255, 255, 0.05);
    --bg-hero: #0f172a;

    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-tertiary: #94a3b8;
    --text-muted: #64748b;

    --border-color: #334155;
    --border-light: #475569;

    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -2px rgba(0, 0, 0, 0.2);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.4), 0 10px 10px -5px rgba(0, 0, 0, 0.2);
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 5rem;
}

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

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 700;
    line-height: var(--leading-tight);
    color: var(--text-primary);
}

h1 {
    font-size: var(--text-5xl);
}

h2 {
    font-size: var(--text-4xl);
}

h3 {
    font-size: var(--text-3xl);
}

h4 {
    font-size: var(--text-2xl);
}

h5 {
    font-size: var(--text-xl);
}

h6 {
    font-size: var(--text-lg);
}

p {
    color: var(--text-secondary);
}

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

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

/* Utility Classes */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

.glass {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-lg);
    border: none;
    border-radius: var(--radius-md);
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
}

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

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

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

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

.fade-in {
    opacity: 0;
    transform: translateY(12px);
    transition: opacity 0.4s ease-out, transform 0.4s ease-out;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Header & Navigation */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-sticky);
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    transition: all var(--transition-normal);
}

.header.scrolled {
    box-shadow: var(--shadow-md);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-md) 0;
}

.nav-brand {
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--text-primary);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    list-style: none;
}

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

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

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

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

.theme-toggle {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--space-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.theme-toggle:hover {
    background: var(--bg-tertiary);
}

.portfolio-switcher {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--space-sm) var(--space-md);
    color: var(--text-primary);
    font-size: var(--text-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='currentColor'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.5rem center;
    background-size: 1rem;
    padding-right: 2.5rem;
}

.portfolio-switcher:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-sm);
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: var(--text-xl);
    color: var(--text-primary);
    cursor: pointer;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: var(--bg-hero);
    color: var(--text-inverse);
    position: relative;
    overflow: hidden;
}

.hero::before {
    display: none;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.hero-image-container {
    position: relative;
    display: inline-block;
    margin-bottom: var(--space-xl);
}

.hero-image {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    border: 3px solid rgba(255, 255, 255, 0.15);
    object-fit: cover;
}

.hero-status-badge {
    position: absolute;
    bottom: 10px;
    right: 10px;
    background: var(--color-success);
    color: white;
    padding: var(--space-xs) var(--space-sm);
    border-radius: 20px;
    font-size: var(--text-xs);
    display: flex;
    align-items: center;
    gap: 5px;
    box-shadow: var(--shadow-md);
}

.status-dot {
    width: 8px;
    height: 8px;
    background: white;
    border-radius: 50%;
    animation: blink 2s infinite;
}

@keyframes blink {

    0%,
    50% {
        opacity: 1;
    }

    51%,
    100% {
        opacity: 0.3;
    }
}

.hero-title {
    font-size: var(--text-5xl);
    font-weight: 700;
    margin-bottom: var(--space-lg);
    color: var(--text-inverse);
}

.gradient-text {
    color: #60a5fa;
}

.hero-subtitle-container {
    font-size: var(--text-2xl);
    margin-bottom: var(--space-lg);
    font-weight: 400;
    min-height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 8px;
}

.hero-subtitle-static {
    color: rgba(255, 255, 255, 0.9);
}

.hero-subtitle-dynamic {
    color: rgba(255, 255, 255, 0.9);
    font-weight: 600;
    min-width: 200px;
    text-align: left;
}

.typing-cursor {
    color: rgba(255, 255, 255, 0.6);
    animation: blink-cursor 1s infinite;
}

@keyframes blink-cursor {

    0%,
    50% {
        opacity: 1;
    }

    51%,
    100% {
        opacity: 0;
    }
}

.hero-description {
    font-size: var(--text-lg);
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: var(--space-2xl);
    line-height: var(--leading-relaxed);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-cta {
    display: flex;
    gap: var(--space-lg);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--space-2xl);
}

.btn-outline {
    background: transparent;
    color: rgba(255, 255, 255, 0.9);
    border: 2px solid rgba(255, 255, 255, 0.3);
    transition: all var(--transition-fast);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.6);
    color: var(--text-inverse);
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-lg);
    max-width: 700px;
    margin: 0 auto;
}

.stat-item {
    text-align: center;
    padding: var(--space-md);
    border-right: 1px solid rgba(255, 255, 255, 0.1);
}

.stat-item:last-child {
    border-right: none;
}

.stat-number {
    display: block;
    font-size: var(--text-2xl);
    font-weight: 700;
    color: rgba(255, 255, 255, 0.95);
    margin-bottom: var(--space-xs);
}

.stat-label {
    font-size: var(--text-sm);
    color: rgba(255, 255, 255, 0.8);
    font-weight: 500;
}

/* About Section */
.section {
    padding: var(--space-3xl) 0;
}

.section-title {
    text-align: center;
    margin-bottom: var(--space-2xl);
    position: relative;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--text-primary);
    padding-bottom: var(--space-xl);
}

.section-title::before {
    content: '';
    position: absolute;
    bottom: var(--space-lg);
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 2px;
    background: var(--color-primary);
}

.section-title::after {
    display: none;
}

/* Section title - clean */

/* About Section */
.about-container {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--space-3xl);
    align-items: start;
}

.about-main {
    padding-right: var(--space-xl);
}

.about-intro {
    margin-bottom: var(--space-2xl);
}

.about-title {
    font-size: var(--text-4xl);
    margin-bottom: var(--space-md);
    line-height: var(--leading-tight);
}

.title-accent {
    color: var(--text-secondary);
    font-weight: 400;
}

.about-tagline {
    font-size: var(--text-xl);
    color: var(--color-primary);
    font-weight: 500;
    margin-bottom: var(--space-lg);
}

.about-description {
    margin-bottom: var(--space-2xl);
}

.about-description p {
    font-size: var(--text-lg);
    line-height: var(--leading-relaxed);
    margin-bottom: var(--space-lg);
    color: var(--text-secondary);
}

.about-highlights {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-lg);
}

.highlight-item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    padding: var(--space-lg);
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    transition: all var(--transition-fast);
}

.highlight-item:hover {
    border-color: var(--color-primary);
}

.highlight-item i {
    font-size: var(--text-xl);
    color: var(--color-primary);
    margin-top: 4px;
}

.highlight-item h4 {
    margin-bottom: var(--space-xs);
    color: var(--text-primary);
    font-size: var(--text-lg);
}

.highlight-item p {
    color: var(--text-secondary);
    font-size: var(--text-sm);
    margin: 0;
}

.about-sidebar {
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    border: 1px solid var(--border-color);
    position: sticky;
    top: 100px;
}

.profile-image-container {
    text-align: center;
    margin-bottom: var(--space-xl);
    position: relative;
}

.profile-image {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--border-color);
}

.profile-status {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    background: var(--color-success);
    color: white;
    padding: var(--space-xs) var(--space-sm);
    border-radius: 20px;
    font-size: var(--text-xs);
    font-weight: 500;
    margin-top: var(--space-md);
}

.profile-status i {
    font-size: 8px;
    animation: pulse 2s infinite;
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.5;
    }
}

.about-details {
    margin-bottom: var(--space-xl);
}

.detail-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md) 0;
    border-bottom: 1px solid var(--border-light);
}

.detail-item:last-child {
    border-bottom: none;
}

.detail-item i {
    width: 20px;
    color: var(--color-primary);
    font-size: var(--text-sm);
}

.detail-item div {
    flex: 1;
}

.detail-label {
    display: block;
    font-size: var(--text-xs);
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 2px;
}

.detail-value {
    display: block;
    font-size: var(--text-sm);
    color: var(--text-primary);
    font-weight: 500;
}

.social-connect h4 {
    color: var(--text-primary);
    margin-bottom: var(--space-md);
    font-size: var(--text-base);
}

.social-links {
    display: flex;
    gap: var(--space-sm);
    justify-content: center;
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    color: var(--text-inverse);
    transition: all var(--transition-fast);
    text-decoration: none;
}

.social-link.linkedin {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
}

.social-link.github {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
}

.social-link.twitter {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
}

.social-link.email {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
}

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

/* Achievements Section */
.achievements-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
    max-width: 900px;
    margin: 0 auto;
}

@media (max-width: 1200px) {
    .achievements-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.achievement-card {
    background: transparent;
    border-radius: 0;
    padding: var(--space-lg);
    border: none;
    border-bottom: 1px solid var(--border-color);
    transition: none;
    position: relative;
    overflow: hidden;
    text-align: left;
}

.achievement-card::before {
    display: none;
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(59, 130, 246, 0.1), transparent);
    transition: left 0.5s ease;
}

.achievement-card:hover::before {
    display: none;
}

.achievement-card:hover {
    /* no hover effects */
}

.achievement-icon {
    display: none;
}

.achievement-number {
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-xs);
    position: relative;
    z-index: 2;
}

.achievement-label {
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: var(--space-xs);
    position: relative;
    z-index: 2;
}

.achievement-description {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    line-height: var(--leading-relaxed);
    position: relative;
    z-index: 2;
}

/* Skills Section */
.skills-container {
    max-width: 1200px;
    margin: 0 auto;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
    margin-bottom: var(--space-2xl);
}

.skill-category {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    border: 1px solid var(--border-color);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    height: fit-content;
}

.skill-category::before {
    display: none;
}

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

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

.skill-icon {
    width: 40px;
    height: 40px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    font-size: var(--text-lg);
}

.skill-header h4 {
    margin: 0;
    color: var(--text-primary);
    font-size: var(--text-lg);
}

.tech-stack {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
}

.tech-item {
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    border: 1px solid var(--border-color);
    text-align: center;
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
    min-height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.tech-item::before {
    display: none;
}

.tech-item:hover {
    border-color: var(--color-primary);
}

.tech-name {
    display: block;
    font-weight: 600;
    color: var(--text-primary);
    font-size: var(--text-sm);
    text-align: center;
    line-height: 1.2;
    word-wrap: break-word;
    hyphens: auto;
}

.skills-specializations {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    border: 1px solid var(--border-color);
    text-align: center;
}

.skills-specializations h4 {
    color: var(--text-primary);
    margin-bottom: var(--space-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
}

.specialization-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-lg);
}

.specialization-item {
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    border: 1px solid var(--border-color);
    transition: all var(--transition-fast);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    cursor: pointer;
}

.specialization-item:hover {
    border-color: var(--color-primary);
}

.specialization-item i {
    font-size: var(--text-lg);
    color: var(--text-secondary);
    margin-bottom: var(--space-sm);
}

.specialization-item span {
    font-weight: 600;
    color: var(--text-primary);
    font-size: var(--text-sm);
    text-align: center;
}

/* Experience Section - Best-in-Class Professional Design */
.experience-timeline {
    position: relative;
    padding-left: var(--space-3xl);
    margin-top: var(--space-2xl);
    max-width: 1000px;
}

.experience-timeline::before {
    content: '';
    position: absolute;
    left: 24px;
    top: 0;
    bottom: 0;
    width: 1px;
    background: var(--border-color);
}

.experience-item {
    position: relative;
    margin-bottom: var(--space-3xl);
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    padding: var(--space-3xl);
    border: 1px solid var(--border-color);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
}

.experience-item::before {
    content: '';
    position: absolute;
    left: -36px;
    top: var(--space-3xl);
    width: 16px;
    height: 16px;
    background: var(--color-primary);
    border: 4px solid var(--bg-primary);
    border-radius: 50%;
    box-shadow: 0 0 0 4px var(--border-color);
    transition: all 0.3s ease;
}

.experience-item:hover {
    border-color: var(--color-primary);
}

.experience-item:hover::before {
    background: var(--color-primary);
}

.experience-header {
    margin-bottom: var(--space-2xl);
}

.experience-company {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    background: var(--bg-secondary);
    color: var(--color-primary);
    padding: var(--space-xs) var(--space-md);
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: var(--text-sm);
    margin-bottom: var(--space-md);
    letter-spacing: 0.025em;
    text-transform: uppercase;
    border: 1px solid var(--border-color);
}

.experience-title {
    font-size: var(--text-xl);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-md);
    line-height: var(--leading-tight);
}

.experience-meta {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
    padding: var(--space-md) 0;
    border-bottom: 1px solid var(--border-light);
    flex-wrap: wrap;
}

.experience-meta span:not(:last-child)::after {
    content: '•';
    margin-left: var(--space-md);
    color: var(--text-muted);
    font-weight: normal;
}

.experience-duration {
    color: var(--text-tertiary);
    font-weight: 500;
    font-size: var(--text-sm);
    white-space: nowrap;
}

.experience-location {
    color: var(--text-tertiary);
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    white-space: nowrap;
    font-size: var(--text-sm);
}

.experience-location::before {
    display: none;
}

.experience-type {
    color: var(--text-tertiary);
    font-weight: 500;
    font-size: var(--text-sm);
    text-transform: capitalize;
    white-space: nowrap;
}

.experience-description {
    margin-bottom: var(--space-2xl);
}

.experience-description ul {
    list-style: none;
    padding-left: 0;
    display: grid;
    gap: var(--space-lg);
}

.experience-description li {
    position: relative;
    padding: var(--space-sm) var(--space-sm) var(--space-sm) var(--space-xl);
    background: transparent;
    border-radius: 0;
    border-left: none;
    color: var(--text-secondary);
    line-height: var(--leading-relaxed);
    font-size: var(--text-sm);
    transition: none;
}

.experience-description li:hover {
    /* no hover effect */
}

.experience-description li::before {
    content: '\2022';
    left: var(--space-sm);
    color: var(--text-tertiary);
    font-size: var(--text-base);
    line-height: var(--leading-relaxed);
}

.experience-description strong {
    color: var(--text-primary);
    font-weight: 700;
}

.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
    margin-top: var(--space-xl);
    padding-top: var(--space-xl);
    border-top: 1px solid var(--border-light);
}

.tech-tag {
    background: var(--bg-secondary);
    color: var(--text-secondary);
    padding: var(--space-xs) var(--space-md);
    border-radius: var(--radius-md);
    font-size: var(--text-xs);
    font-weight: 500;
    border: 1px solid var(--border-color);
}

/* Projects Section */
.projects-container {
    position: relative;
    overflow: hidden;
    /* Changed to hidden for smooth infinite scroll */
    padding: var(--space-xl) 0;
    margin: 0 var(--space-xl);
}

.projects-carousel {
    display: flex;
    align-items: flex-start;
    /* Align carousel items to top */
    gap: var(--space-lg);
    will-change: transform;
    overflow: visible;
    padding: var(--space-md) 0;
    transition: none;
    /* Disable default transition for smooth infinite scroll */
}

.projects-grid {
    display: flex;
    align-items: flex-start;
    /* Ensure all cards align to the top */
    gap: var(--space-lg);
    min-width: 300%;
    /* Accommodate tripled cards for seamless infinite scroll */
    overflow: visible;
}

.project-card {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: all var(--transition-normal);
    position: relative;
    height: 580px;
    flex: 0 0 400px;
    max-width: 400px;
    display: flex;
    flex-direction: column;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    align-self: flex-start;
    /* Ensure consistent vertical alignment */
    margin: 0;
    /* Reset margins */
}

.carousel-controls {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 100;
    pointer-events: none;
}

.carousel-controls .carousel-btn {
    pointer-events: all;
}

.carousel-btn {
    background: var(--bg-primary);
    border: 2px solid var(--color-primary);
    border-radius: 50%;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: var(--text-lg);
    box-shadow: var(--shadow-lg);
}

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

.carousel-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.carousel-btn.prev {
    left: -25px;
}

.carousel-btn.next {
    right: -25px;
}

.project-card::before {
    display: none;
}

.project-card:hover::before {
    display: none;
}

.project-card:hover {
    border-color: var(--color-primary);
    z-index: 10;
}

.project-header {
    padding: var(--space-xl);
    background: var(--bg-secondary);
    color: var(--text-primary);
    position: relative;
    z-index: 1;
    min-height: 160px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    overflow: visible;
    border-bottom: 1px solid var(--border-color);
}

.project-header::after {
    display: none;
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 0;
    border-left: 15px solid transparent;
    border-right: 15px solid transparent;
    border-top: 10px solid var(--color-secondary);
}

.project-title {
    font-size: var(--text-lg);
    font-weight: 700;
    margin: 0;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    line-height: 1.4;
    word-wrap: break-word;
    min-height: 48px;
}

.project-badges {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    align-items: flex-start;
    min-height: 80px;
    justify-content: flex-start;
    max-width: 100%;
}

.project-badge {
    background: var(--bg-tertiary);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    font-size: var(--text-xs);
    font-weight: 500;
    color: var(--text-secondary);
    white-space: nowrap;
    border: 1px solid var(--border-color);
    flex-shrink: 0;
}

.project-content {
    padding: var(--space-xl);
    position: relative;
    z-index: 1;
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: visible;
}

.project-description {
    margin-bottom: var(--space-xl);
    color: var(--text-secondary);
    font-size: var(--text-sm);
    line-height: var(--leading-normal);
}

.project-features {
    list-style: none;
    margin-bottom: var(--space-lg);
    display: grid;
    gap: var(--space-sm);
    flex: 1;
    min-height: 120px;
}

.project-features li {
    position: relative;
    padding: var(--space-xs) var(--space-sm);
    padding-left: var(--space-2xl);
    background: var(--bg-primary);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-light);
    color: var(--text-secondary);
    transition: all var(--transition-fast);
    font-size: var(--text-xs);
    margin-right: auto;
}

.project-features li:hover {
    /* no hover effect */
}

.project-features li::before {
    content: '\2022';
    position: absolute;
    left: var(--space-md);
    top: 50%;
    transform: translateY(-50%);
    font-size: var(--text-sm);
    color: var(--text-tertiary);
}

.project-links {
    display: flex;
    gap: var(--space-md);
    align-items: center;
    justify-content: space-between;
    margin-top: auto;
    padding-top: var(--space-lg);
    border-top: 1px solid var(--border-light);
    min-height: 80px;
}

.project-links .btn {
    opacity: 1 !important;
    transform: translateY(0) !important;
    transition: all var(--transition-normal);
    visibility: visible !important;
    position: relative;
    z-index: 10;
    display: inline-flex !important;
    font-size: var(--text-sm);
    padding: var(--space-sm) var(--space-md);
    background: var(--color-primary) !important;
    color: var(--text-inverse) !important;
    border: none !important;
}

.project-card:hover .project-links .btn {
    background: var(--color-primary-dark) !important;
    color: var(--text-inverse) !important;
}

.project-links .btn:hover {
    background: var(--color-primary-dark) !important;
    color: var(--text-inverse) !important;
    text-decoration: none !important;
}

.project-status {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    background: var(--color-success);
    color: white;
    padding: var(--space-xs) var(--space-sm);
    border-radius: 20px;
    font-size: var(--text-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.project-status.in-development {
    background: var(--color-warning);
}

.project-status.archived {
    background: var(--text-tertiary);
}

/* Ensure cloned cards have consistent styling and positioning */
.card-clone {
    pointer-events: auto;
    opacity: 1;
    position: relative;
    align-self: flex-start;
    /* Ensure cloned cards align to top */
    margin: 0;
    /* Reset any inherited margins */
    vertical-align: top;
    /* Additional vertical alignment */
}

/* Education Section */
.education-container {
    max-width: 1200px;
    margin: 0 auto;
}

.education-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-xl);
    margin-bottom: var(--space-3xl);
}

.education-card,
.cert-card {
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
    border: 1px solid var(--border-color);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.education-card::before,
.cert-card::before {
    display: none;
}

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

.cert-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
}

.cert-logo {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    margin-bottom: var(--space-md);
}

.cert-link {
    color: var(--color-primary);
    font-weight: 500;
    text-decoration: underline;
    text-decoration-color: transparent;
    transition: text-decoration-color var(--transition-fast);
}

.cert-link:hover {
    text-decoration-color: var(--color-primary);
}

/* Recommendations Section */
.recommendations-container {
    position: relative;
    overflow: hidden;
    /* Ensure hidden for smooth infinite scroll */
    padding: var(--space-md) 0;
}

.recommendations-carousel {
    display: flex;
    align-items: flex-start;
    /* Align carousel items to top */
    gap: var(--space-lg);
    will-change: transform;
    transition: none;
    /* Disable default transition for smooth infinite scroll */
}

.recommendations-grid {
    display: flex;
    align-items: flex-start;
    /* Ensure all cards align to the top */
    gap: var(--space-lg);
    min-width: 300%;
    /* Accommodate tripled cards for seamless infinite scroll */
}

.recommendation-card {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    border: 1px solid var(--border-color);
    transition: all var(--transition-normal);
    flex: 0 0 480px;
    max-width: 480px;
    position: relative;
    overflow: visible;
    height: 450px;
    display: flex;
    flex-direction: column;
    align-self: flex-start;
    /* Ensure consistent vertical alignment */
    margin: 0;
    /* Reset margins */
}

.recommendation-card:hover {
    border-color: var(--color-primary);
    z-index: 10;
}

.recommendation-card::before {
    display: none;
}

.recommendation-header {
    display: flex;
    align-items: flex-start;
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
    min-height: 100px;
}

.recommendation-avatar {
    width: 48px;
    height: 48px;
    background: var(--bg-tertiary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    font-size: var(--text-lg);
    flex-shrink: 0;
}

.recommendation-info h4 {
    color: var(--text-primary);
    margin-bottom: var(--space-xs);
    font-size: var(--text-lg);
    font-weight: 600;
}

.recommendation-info p {
    color: var(--text-secondary);
    font-size: var(--text-sm);
    margin-bottom: var(--space-xs);
    line-height: var(--leading-normal);
}

.recommendation-relation {
    display: inline-block;
    background: var(--bg-secondary);
    color: var(--color-primary);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    font-size: var(--text-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.recommendation-text {
    color: var(--text-secondary);
    font-style: italic;
    line-height: 1.6;
    position: relative;
    padding-left: var(--space-lg);
    border-left: 3px solid var(--color-primary);
    margin: 0;
    font-size: var(--text-base);
    flex: 1;
    overflow: visible;
    word-wrap: break-word;
    hyphens: auto;
}

.recommendation-text::before {
    content: '"';
    position: absolute;
    left: -10px;
    top: -10px;
    font-size: var(--text-3xl);
    color: var(--color-primary);
    font-weight: bold;
}

/* Contact Section */
.contact-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: var(--space-3xl);
    align-items: start;
}

.contact-form {
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.contact-form::before {
    display: none;
}

.contact-form-header {
    margin-bottom: var(--space-xl);
    text-align: center;
}

.contact-form-header h3 {
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
    font-size: var(--text-2xl);
}

.contact-form-header p {
    color: var(--text-secondary);
    font-size: var(--text-sm);
}

.form-group {
    margin-bottom: var(--space-xl);
    position: relative;
}

.form-label {
    display: block;
    margin-bottom: var(--space-sm);
    font-weight: 600;
    color: var(--text-primary);
    font-size: var(--text-sm);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-input,
.form-textarea {
    width: 100%;
    padding: var(--space-lg) var(--space-md);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-family: inherit;
    font-size: var(--text-base);
    transition: all var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-textarea {
    resize: vertical;
    min-height: 140px;
    line-height: var(--leading-relaxed);
}

.contact-info {
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
    border: 1px solid var(--border-color);
    position: sticky;
    top: 100px;
}

.contact-info-header {
    text-align: center;
    margin-bottom: var(--space-xl);
}

.contact-info-header h3 {
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
    font-size: var(--text-xl);
}

.contact-info-header p {
    color: var(--text-secondary);
    font-size: var(--text-sm);
}

.contact-items {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    padding: var(--space-lg);
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-light);
    transition: all var(--transition-fast);
}

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

.contact-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    border-radius: var(--radius-md);
    flex-shrink: 0;
    font-size: var(--text-base);
}

.contact-item-content h4 {
    color: var(--text-primary);
    margin-bottom: var(--space-xs);
    font-size: var(--text-base);
    font-weight: 600;
}

.contact-item-content p {
    color: var(--text-secondary);
    font-size: var(--text-sm);
    line-height: var(--leading-normal);
    margin: 0;
}

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

.contact-social h4 {
    color: var(--text-primary);
    margin-bottom: var(--space-md);
    font-size: var(--text-base);
}

.contact-social .social-links {
    justify-content: center;
    gap: var(--space-md);
}

.contact-social .social-link {
    width: 45px;
    height: 45px;
    font-size: var(--text-lg);
}

/* Footer */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: var(--space-xl) 0;
    text-align: center;
}

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

.back-to-top {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

.back-to-top:hover {
    color: var(--color-primary);
}

/* Resume Modal */
.resume-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.9);
    z-index: var(--z-modal);
    align-items: center;
    justify-content: center;
    padding: var(--space-md);
}

.resume-modal.active {
    display: flex;
}

.resume-modal iframe {
    width: 90%;
    max-width: 1000px;
    height: 90vh;
    border: none;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
}

.resume-close {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    background: var(--text-inverse);
    color: black;
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    font-size: var(--text-lg);
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Responsive Design */
@media (max-width: 768px) {
    html, body {
        max-width: 100vw;
        overflow-x: hidden !important;
    }
    .container {
        max-width: 100vw;
        overflow-x: hidden;
    }
    .container {
        padding: 0 var(--space-sm);
    }

    .nav-menu {
        display: none;
    }

    .mobile-menu-toggle {
        display: block;
    }

    .hero-title {
        font-size: var(--text-4xl);
    }

    .hero-cta {
        flex-direction: column;
        align-items: center;
    }

    .about-container {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }

    .about-main {
        padding-right: 0;
        text-align: center;
    }

    .about-sidebar {
        position: relative;
        top: auto;
    }

    .about-highlights {
        grid-template-columns: 1fr;
    }

    .highlight-item {
        text-align: left;
    }

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

    .footer-content {
        flex-direction: column;
        gap: var(--space-md);
    }

    .project-card {
        flex: 0 0 350px;
        max-width: 350px;
        height: 500px;
    }

    .project-header {
        padding: var(--space-lg);
        min-height: 140px;
    }

    .project-content {
        padding: var(--space-lg);
    }

    .recommendation-card {
        flex: 0 0 380px;
        max-width: 380px;
        height: 400px;
    }

    .recommendation-avatar {
        width: 60px;
        height: 60px;
        font-size: var(--text-xl);
    }

    .cert-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--space-sm);
    }

    .experience-timeline {
        padding-left: var(--space-lg);
    }

    .experience-item {
        padding: var(--space-lg);
        margin-bottom: var(--space-xl);
    }

    .experience-item::before {
        left: -22px;
        width: 10px;
        height: 10px;
        top: var(--space-lg);
    }

    .experience-item:hover {
        /* no hover transform on mobile */
    }

    .experience-title {
        font-size: var(--text-xl);
    }

    .experience-meta {
        flex-direction: column;
        gap: var(--space-xs);
        align-items: flex-start;
    }

    .experience-meta span:not(:first-child):not(:last-child)::after {
        display: none;
    }

    .contact-grid {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }

    .contact-info {
        position: relative;
        top: auto;
    }

    .project-card:hover {
        /* no hover transform on mobile */
    }

    .carousel-btn {
        width: 40px;
        height: 40px;
        font-size: var(--text-base);
    }

    .carousel-btn.prev {
        left: -20px;
    }

    .carousel-btn.next {
        right: -20px;
    }

    .recommendation-avatar {
        width: 50px;
        height: 50px;
        font-size: var(--text-xl);
    }

    .education-grid {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }

    .cert-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-md);
    }

    .nav-menu.open {
        display: flex !important;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg-secondary);
        z-index: 999;
        box-shadow: 0 4px 16px rgba(0,0,0,0.08);
    }
}

/* Loading Animation */
.loader {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: var(--z-modal);
    transition: opacity var(--transition-slow), visibility var(--transition-slow);
}

.loader.hidden {
    opacity: 0;
    visibility: hidden;
}

.loader-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--border-color);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* Scroll Progress Bar */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: 2px;
    background: var(--color-primary);
    z-index: var(--z-tooltip);
    transition: width 0.1s ease-out;
}

/* Particle Background - disabled */
.particles-background {
    display: none;
}

[data-theme="dark"] .particles-background {
    display: none;
}

#particlesCanvas {
    display: none;
}

/* Button Ripple Effect */
.btn {
    position: relative;
    overflow: hidden;
}

.ripple {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.6);
    transform: scale(0);
    animation: ripple-animation 0.6s linear;
    pointer-events: none;
}

@keyframes ripple-animation {
    to {
        transform: scale(4);
        opacity: 0;
    }
}

/* Section Spacing */
.section {
    min-height: auto;
    display: block;
    padding: var(--space-3xl) 0;
}

.hero {
    min-height: 100vh;
}

/* Enhanced Mobile Responsiveness */
@media (max-width: 768px) {
    .section {
        min-height: auto;
        padding: var(--space-2xl) 0;
    }

    .hero-title {
        font-size: var(--text-4xl);
    }

    .hero-subtitle-container {
        font-size: var(--text-xl);
        flex-direction: column;
        gap: 4px;
    }

    .hero-description {
        font-size: var(--text-base);
    }

    .hero-image {
        width: 120px;
        height: 120px;
    }

    .hero-stats {
        grid-template-columns: repeat(4, 1fr);
        gap: var(--space-sm);
        max-width: 100%;
    }

    .stat-item {
        padding: var(--space-sm);
    }

    .stat-number {
        font-size: var(--text-xl);
    }

    .stat-label {
        font-size: var(--text-xs);
    }

    .stat-number {
        font-size: var(--text-2xl);
    }

    .achievements-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-md);
    }

    .achievement-card {
        padding: var(--space-lg);
    }

    .achievement-number {
        font-size: var(--text-3xl);
    }

    .achievement-label {
        font-size: var(--text-base);
    }

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

    .tech-stack {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-sm);
    }

    .tech-item {
        padding: var(--space-sm);
    }

    .tech-name {
        font-size: var(--text-xs);
        padding: var(--space-xs);
    }

    .specialization-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-md);
    }

    .hero-cta {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        max-width: 250px;
    }
}

/* Loading Animation */
.loader-spinner {
    position: relative;
}

.loader-spinner::after {
    display: none;
}

@keyframes pulse {

    0%,
    100% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.1);
    }
}

/* Improved Focus States for Accessibility */
.btn:focus,
.form-input:focus,
.form-textarea:focus,
.portfolio-switcher:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* Dark mode improvements */
[data-theme="dark"] .achievement-card {
    background: transparent;
}

[data-theme="dark"] .skill-bar {
    background: var(--bg-tertiary);
}

[data-theme="dark"] .hero-image {
    border-color: rgba(255, 255, 255, 0.3);
}

/* Notification System */
.notification {
    position: fixed;
    top: 100px;
    right: 20px;
    background: var(--bg-primary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    z-index: var(--z-tooltip);
    transform: translateX(400px);
    transition: all var(--transition-normal);
    max-width: 400px;
    overflow: hidden;
}

.notification.show {
    transform: translateX(0);
}

.notification-success {
    border-color: var(--color-success);
    background: var(--bg-primary);
}

.notification-error {
    border-color: var(--color-error);
    background: var(--bg-primary);
}

.notification-content {
    padding: var(--space-lg);
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    justify-content: space-between;
}

.notification-content span {
    color: var(--text-primary);
    font-weight: 500;
    line-height: var(--leading-normal);
    flex: 1;
}

.notification-close {
    background: none;
    border: none;
    color: var(--text-tertiary);
    cursor: pointer;
    padding: var(--space-xs);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    flex-shrink: 0;
}

.notification-close:hover {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

/* Contact Form Loading State */
.contact-form button:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

.contact-form button .fa-spinner {
    animation: spin 1s linear infinite;
}

/* Print styles */
@media print {

    .header,
    .hero-cta,
    .portfolio-switcher,
    .theme-toggle,
    .scroll-progress,
    .particles-background,
    .notification {
        display: none !important;
    }

    .hero {
        min-height: auto;
        padding: var(--space-lg) 0;
    }

    body {
        font-size: 12pt;
        line-height: 1.4;
    }
}

/* Experience Section Mobile Styles */
.experience-timeline {
    padding-left: var(--space-xl);
    max-width: 100%;
}

.experience-timeline::before {
    left: 18px;
}

.experience-item {
    padding: var(--space-xl);
    margin-bottom: var(--space-2xl);
}

.experience-item::before {
    left: -28px;
    width: 12px;
    height: 12px;
    top: var(--space-xl);
}

.experience-title {
    font-size: var(--text-2xl);
}

.experience-company {
    font-size: var(--text-xs);
    padding: var(--space-xs) var(--space-md);
}

.experience-meta {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
    padding: var(--space-md) 0;
    border-bottom: 1px solid var(--border-light);
    flex-wrap: wrap;
}

.experience-meta span:not(:last-child)::after {
    content: '•';
    margin-left: var(--space-md);
    color: var(--text-muted);
    font-weight: normal;
}

.experience-duration {
    color: var(--text-tertiary);
    font-weight: 500;
    font-size: var(--text-sm);
    white-space: nowrap;
}

.experience-location {
    color: var(--text-tertiary);
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    white-space: nowrap;
    font-size: var(--text-sm);
}

.experience-location::before {
    display: none;
}

.experience-type {
    color: var(--text-tertiary);
    font-weight: 500;
    font-size: var(--text-sm);
    text-transform: capitalize;
    white-space: nowrap;
}

.experience-description li::before {
    content: '\2022';
    position: absolute;
    left: var(--space-sm);
    top: var(--space-sm);
    color: var(--text-tertiary);
    font-size: var(--text-base);
    line-height: var(--leading-relaxed);
}