/* CSS Variables */

:root {
    /* Colors - Light Mode (Default) */
    --primary-bg: #ffffff;
    --secondary-bg: #f8f9fa;
    --tertiary-bg: #e9ecef;
    --accent-primary: #8B5CF6;
    --accent-secondary: #3B82F6;
    --accent-gradient: linear-gradient(135deg, #8B5CF6, #3B82F6, #6366F1);
    --text-primary: #1a1a1a;
    --text-secondary: #4a5568;
    --text-muted: #718096;
    --border-color: #e2e8f0;
    --shadow-color: rgba(139, 92, 246, 0.15);
    --glow-color: rgba(139, 92, 246, 0.2);
    --navbar-bg: rgba(255, 255, 255, 0.95);
    --navbar-mobile-bg: rgba(255, 255, 255, 0.98);
    /* Typography */
    --font-primary: 'Inter', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    /* Spacing */
    --section-padding: 100px 0;
    --container-padding: 0 20px;
    --border-radius: 12px;
    --border-radius-lg: 20px;
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-medium: 0.4s ease;
    --transition-slow: 0.6s ease;
}


/* Dark Mode Theme */

[data-theme="dark"] {
    --primary-bg: #0a0a0a;
    --secondary-bg: #1a1a1a;
    --tertiary-bg: #2a2a2a;
    --accent-primary: #8B5CF6;
    --accent-secondary: #3B82F6;
    --accent-gradient: linear-gradient(135deg, #8B5CF6, #3B82F6, #6366F1);
    --text-primary: #ffffff;
    --text-secondary: #b0b0b0;
    --text-muted: #808080;
    --border-color: #333333;
    --shadow-color: rgba(139, 92, 246, 0.1);
    --glow-color: rgba(139, 92, 246, 0.3);
    --navbar-bg: rgba(10, 10, 10, 0.95);
    --navbar-mobile-bg: rgba(10, 10, 10, 0.98);
}


/* Smooth theme transition */

*,
*::before,
*::after {
    transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
}


/* Reset and Base Styles */

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

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

body {
    font-family: var(--font-primary);
    background: var(--primary-bg);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--container-padding);
}


/* Typography */

h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: 1rem;
}

p {
    margin-bottom: 1rem;
    color: var(--text-secondary);
}

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

a:hover {
    color: var(--accent-secondary);
}


/* Gradient Text */

.gradient-text {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: inline-block;
}


/* Buttons */

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border: none;
    border-radius: var(--border-radius);
    font-family: var(--font-primary);
    font-weight: 500;
    font-size: 16px;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition-medium);
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: var(--transition-medium);
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background: var(--accent-gradient);
    color: white;
    box-shadow: 0 4px 20px var(--shadow-color);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px var(--glow-color);
}

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

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


/* Navigation */

.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: var(--navbar-bg);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: var(--transition-medium);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    max-width: 1200px;
    margin: 0 auto;
    gap: 20px;
}

.nav-logo {
    display: flex;
    align-items: center;
    position: relative;
}

.logo-text {
    font-family: var(--font-mono);
    font-size: 24px;
    font-weight: 700;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo-pulse {
    width: 8px;
    height: 8px;
    background: var(--accent-primary);
    border-radius: 50%;
    margin-left: 8px;
    animation: pulse 2s infinite;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-gradient);
    transition: var(--transition-fast);
}

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

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

.theme-toggle {
    background: var(--secondary-bg);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition-fast);
    color: var(--text-secondary);
    font-size: 16px;
}

.theme-toggle:hover {
    background: var(--tertiary-bg);
    border-color: var(--accent-primary);
    color: var(--accent-primary);
    transform: scale(1.1);
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    transition: var(--transition-fast);
}


/* Hero Section */

.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    position: relative;
    overflow: hidden;
    padding: var(--section-padding);
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    max-width: 1200px;
    width: 100%;
    padding: 0 20px;
}

.hero-title {
    font-size: clamp(3rem, 8vw, 5rem);
    font-weight: 700;
    margin-bottom: 20px;
    line-height: 1.1;
}

.hero-subtitle {
    font-size: clamp(1.2rem, 3vw, 1.8rem);
    margin-bottom: 30px;
    font-weight: 400;
}

.hero-description {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
    max-width: 500px;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 500px;
}

.ai-visualization {
    position: relative;
    width: 400px;
    height: 400px;
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    color: var(--text-muted);
    font-size: 14px;
}

.scroll-arrow {
    width: 20px;
    height: 20px;
    border-right: 2px solid var(--accent-primary);
    border-bottom: 2px solid var(--accent-primary);
    transform: rotate(45deg);
    animation: bounce 2s infinite;
}


/* Section Headers */

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    margin-bottom: 20px;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-line {
    width: 60px;
    height: 4px;
    background: var(--accent-gradient);
    margin: 0 auto 20px;
    border-radius: 2px;
}

.section-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
}


/* About Section */

.about {
    padding: var(--section-padding);
    background: var(--secondary-bg);
}

.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 60px;
    align-items: start;
}

.about-intro {
    font-size: 1.3rem;
    color: var(--text-primary);
    font-weight: 500;
    margin-bottom: 30px;
}

.contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 15px;
    margin-top: 30px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-secondary);
}

.contact-item i {
    color: var(--accent-primary);
    width: 20px;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.stat-card {
    background: var(--tertiary-bg);
    padding: 30px 20px;
    border-radius: var(--border-radius);
    text-align: center;
    border: 1px solid var(--border-color);
    transition: var(--transition-medium);
}

.stat-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-primary);
    box-shadow: 0 10px 30px var(--shadow-color);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 10px;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 1px;
}


/* Experience Section */

.experience {
    padding: var(--section-padding);
}

.experience-container {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 40px;
    max-width: 1000px;
    margin: 0 auto;
}

.experience-tabs {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.experience-tab {
    background: var(--secondary-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 20px;
    cursor: pointer;
    transition: var(--transition-fast);
    text-align: left;
    position: relative;
}

.experience-tab:hover {
    border-color: var(--accent-primary);
    transform: translateX(5px);
}

.experience-tab.active {
    background: var(--tertiary-bg);
    border-color: var(--accent-primary);
    box-shadow: 0 5px 20px var(--shadow-color);
}

.experience-tab.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: var(--accent-gradient);
    border-radius: 0 4px 4px 0;
}

.tab-title {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
    font-size: 0.95rem;
    line-height: 1.3;
}

.tab-duration {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-family: var(--font-mono);
}

.experience-content {
    position: relative;
    min-height: 400px;
}

.experience-panel {
    display: none;
    background: var(--secondary-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 40px;
    height: 100%;
    box-sizing: border-box;
}

.experience-panel.active {
    display: block;
    animation: fadeInUp 0.3s ease-out;
}

.experience-header {
    margin-bottom: 25px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 20px;
}

.job-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--accent-primary);
    margin-bottom: 10px;
    line-height: 1.3;
}

.company {
    font-size: 1.1rem;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.duration {
    color: var(--text-muted);
    font-size: 14px;
    font-family: var(--font-mono);
    display: inline-block;
    background: var(--tertiary-bg);
    padding: 4px 12px;
    border-radius: 20px;
    border: 1px solid var(--border-color);
}

.job-description {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 25px;
    line-height: 1.6;
}

.job-achievements h5 {
    color: var(--accent-primary);
    margin-bottom: 15px;
    font-size: 1rem;
    font-weight: 600;
}

.job-achievements ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.job-achievements li {
    padding-left: 25px;
    margin-bottom: 12px;
    position: relative;
    color: var(--text-secondary);
    line-height: 1.5;
}

.job-achievements li::before {
    content: '▶';
    position: absolute;
    left: 0;
    color: var(--accent-primary);
    font-size: 0.8rem;
}

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

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}


/* Skills Section */

.skills {
    padding: var(--section-padding);
    background: var(--secondary-bg);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.skill-category {
    background: var(--tertiary-bg);
    padding: 30px;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    transition: var(--transition-medium);
}

.skill-category:hover {
    transform: translateY(-5px);
    border-color: var(--accent-primary);
    box-shadow: 0 10px 30px var(--shadow-color);
}

.skill-category h3 {
    color: var(--accent-primary);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.skill-category i {
    font-size: 1.5rem;
}

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

.skill-item {
    padding: 8px 0;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 10px;
}

.skill-item::before {
    content: '●';
    color: var(--accent-primary);
}


/* Achievements Section */

.achievements {
    padding: var(--section-padding);
    background: var(--secondary-bg);
}


/* View Toggle */

.achievements-view-toggle {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 24px;
    margin-bottom: 32px;
}

.view-toggle-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    background: var(--tertiary-bg);
    border: 2px solid var(--border-color);
    border-radius: 25px;
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.view-toggle-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #8B5CF6, #A855F7);
    transition: left 0.3s ease;
    z-index: -1;
}

.view-toggle-btn:hover {
    border-color: var(--accent-primary);
    color: var(--text-primary);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(139, 92, 246, 0.2);
}

.view-toggle-btn:hover::before {
    left: 0;
}

.view-toggle-btn:hover {
    color: white;
}

.view-toggle-btn.active {
    background: linear-gradient(135deg, #8B5CF6, #A855F7);
    border-color: #8B5CF6;
    color: white;
    box-shadow: 0 4px 15px rgba(139, 92, 246, 0.3);
}

.view-toggle-btn.active::before {
    left: 0;
}

.view-toggle-btn i {
    font-size: 1rem;
}

.achievements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
    max-width: 1200px;
    margin: 0 auto;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.achievements-timeline {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.achievement-category {
    background: var(--primary-bg);
    padding: 0;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.6s ease-out forwards;
}

.achievement-category::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--accent-gradient);
}

.achievement-category:hover {
    transform: translateY(-6px) scale(1.02);
    border-color: var(--accent-primary);
    box-shadow: 0 16px 40px rgba(139, 92, 246, 0.18);
}


/* Category-specific accent colors & staggered animations */

.achievement-category:nth-child(1) {
    --category-color: #8B5CF6;
    --category-bg: rgba(139, 92, 246, 0.08);
    animation-delay: 0.1s;
}

.achievement-category:nth-child(2) {
    --category-color: #3B82F6;
    --category-bg: rgba(59, 130, 246, 0.08);
    animation-delay: 0.2s;
}

.achievement-category:nth-child(3) {
    --category-color: #10B981;
    --category-bg: rgba(16, 185, 129, 0.08);
    animation-delay: 0.3s;
}

.achievement-category:nth-child(1)::before {
    background: linear-gradient(135deg, #8B5CF6, #A855F7);
}

.achievement-category:nth-child(2)::before {
    background: linear-gradient(135deg, #3B82F6, #2563EB);
}

.achievement-category:nth-child(3)::before {
    background: linear-gradient(135deg, #10B981, #059669);
}

.achievement-category-header {
    padding: 20px 20px 16px;
    background: var(--category-bg);
    border-bottom: 1px solid var(--border-color);
}

.achievement-category h3 {
    color: var(--category-color);
    margin: 0;
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.1rem;
    font-weight: 700;
    letter-spacing: -0.025em;
}

.achievement-category i {
    font-size: 1.2rem;
    opacity: 0.9;
}

.achievement-items {
    padding: 16px 20px 20px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.achievement-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px;
    background: var(--tertiary-bg);
    border-radius: 8px;
    border: 1px solid var(--border-color);
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    opacity: 0;
    transform: translateX(-20px);
    animation: slideInLeft 0.5s ease-out forwards;
}

.achievement-item:hover {
    border-color: var(--category-color);
    background: var(--category-bg);
    transform: translateX(6px) scale(1.02);
    box-shadow: 0 12px 28px rgba(0, 0, 0, 0.12);
}

.achievement-item:hover .achievement-icon {
    transform: scale(1.1) rotate(5deg);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
}

.achievement-icon {
    font-size: 1.1rem;
    min-width: 36px;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    background: var(--category-color);
    color: white;
    font-weight: 600;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
    flex-shrink: 0;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}


/* Timeline View Styles */

.achievements-timeline {
    max-width: 900px;
    margin: 0 auto;
    padding: 40px 0;
}

.timeline-container {
    position: relative;
    padding-left: 60px;
}

.timeline-line {
    position: absolute;
    left: 30px;
    top: 0;
    bottom: 0;
    width: 4px;
    background: linear-gradient(180deg, #8B5CF6 0%, #3B82F6 25%, #10B981 50%, #3B82F6 75%, #8B5CF6 100%);
    border-radius: 2px;
    box-shadow: 0 0 20px rgba(139, 92, 246, 0.3);
}

.timeline-item {
    position: relative;
    margin-bottom: 60px;
    opacity: 0;
    transform: translateX(-30px);
    animation: timelineSlideIn 0.6s ease-out forwards;
}

.timeline-item:nth-child(2) {
    animation-delay: 0.1s;
}

.timeline-item:nth-child(3) {
    animation-delay: 0.2s;
}

.timeline-item:nth-child(4) {
    animation-delay: 0.3s;
}

.timeline-item:nth-child(5) {
    animation-delay: 0.4s;
}

.timeline-item:nth-child(6) {
    animation-delay: 0.5s;
}

.timeline-marker {
    position: absolute;
    left: -60px;
    top: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #8B5CF6, #A855F7);
    border-radius: 50%;
    box-shadow: 0 8px 25px rgba(139, 92, 246, 0.4);
    z-index: 2;
}

.timeline-year {
    color: white;
    font-weight: 700;
    font-size: 0.9rem;
    font-family: var(--font-mono);
    letter-spacing: 0.5px;
}

.timeline-content {
    background: var(--primary-bg);
    border-radius: 16px;
    padding: 28px;
    border: 1px solid var(--border-color);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.timeline-content::before {
    content: '';
    position: absolute;
    left: -12px;
    top: 30px;
    width: 0;
    height: 0;
    border-top: 12px solid transparent;
    border-bottom: 12px solid transparent;
    border-right: 12px solid var(--primary-bg);
}

[data-theme="dark"] .timeline-content::before {
    border-right-color: var(--primary-bg);
}

.timeline-content:hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow: 0 20px 40px rgba(139, 92, 246, 0.15);
    border-color: var(--accent-primary);
}

.timeline-achievement {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 20px;
    background: var(--tertiary-bg);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    margin-bottom: 16px;
    transition: all 0.25s ease;
}

.timeline-achievement:last-child {
    margin-bottom: 0;
}

.timeline-achievement:hover {
    background: var(--secondary-bg);
    border-color: var(--accent-primary);
    transform: translateX(8px);
}

.timeline-achievement .achievement-icon {
    font-size: 1.1rem;
    min-width: 36px;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    background: var(--accent-primary);
    color: white;
    font-weight: 600;
    box-shadow: 0 4px 12px rgba(139, 92, 246, 0.3);
    flex-shrink: 0;
    transition: all 0.3s ease;
}

.timeline-achievement:hover .achievement-icon {
    transform: scale(1.1) rotate(5deg);
    box-shadow: 0 6px 20px rgba(139, 92, 246, 0.4);
}

.timeline-achievement .achievement-content {
    flex: 1;
    min-width: 0;
}

.timeline-achievement .achievement-content h4 {
    color: var(--text-primary);
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 8px;
    line-height: 1.3;
    letter-spacing: -0.025em;
}

.timeline-achievement .achievement-content p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 12px;
    line-height: 1.5;
    letter-spacing: -0.01em;
}

.timeline-achievement .achievement-metric {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: var(--accent-primary);
    color: white;
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-top: 8px;
    box-shadow: 0 2px 8px rgba(139, 92, 246, 0.25);
}


/* Timeline Animation */

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


/* Staggered animation delays for achievement items */

.achievement-item:nth-child(1) {
    animation-delay: 0.1s;
}

.achievement-item:nth-child(2) {
    animation-delay: 0.2s;
}

.achievement-item:nth-child(3) {
    animation-delay: 0.3s;
}

.achievement-item:nth-child(4) {
    animation-delay: 0.4s;
}

.achievement-item:nth-child(5) {
    animation-delay: 0.5s;
}

.achievement-item:nth-child(6) {
    animation-delay: 0.6s;
}

.achievement-content {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.achievement-content h4 {
    color: var(--text-primary);
    font-size: 0.95rem;
    font-weight: 700;
    margin-bottom: 2px;
    line-height: 1.3;
    letter-spacing: -0.025em;
}

.achievement-content p {
    color: var(--text-secondary);
    font-size: 0.8rem;
    margin-bottom: 6px;
    line-height: 1.4;
    letter-spacing: -0.01em;
}

.achievement-date {
    display: inline-flex;
    align-items: center;
    background: var(--category-color);
    color: white;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.7rem;
    font-weight: 600;
    font-family: var(--font-mono);
    letter-spacing: 0.025em;
    text-transform: uppercase;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.15);
    margin-left: auto;
    flex-shrink: 0;
}


/* Professional metric styling */

.achievement-metric {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: var(--category-bg);
    color: var(--category-color);
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-top: 8px;
    margin-right: 8px;
    border: 1px solid rgba(var(--category-color), 0.2);
    transition: all 0.2s ease;
}

.achievement-metric:hover {
    background: var(--category-color);
    color: white;
    transform: translateY(-1px);
}

.achievement-metric i {
    font-size: 0.75rem;
    opacity: 0.8;
}


/* Enhanced shadow for cards */

.achievement-category {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

[data-theme="dark"] .achievement-category {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}


/* Smooth transitions for all interactive elements */

.achievement-category,
.achievement-item,
.achievement-metric,
.achievement-date {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}


/* Professional spacing for achievement content */

.achievement-content {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    min-height: 80px;
}

.achievement-content .achievement-metric+.achievement-date {
    margin-top: 4px;
}


/* Publications Section */

.publications {
    padding: var(--section-padding);
}

.publications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.publication-card {
    background: var(--secondary-bg);
    padding: 30px;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    transition: var(--transition-medium);
}

.publication-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-primary);
    box-shadow: 0 10px 30px var(--shadow-color);
}

.publication-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 15px;
    line-height: 1.4;
}

.publication-journal {
    color: var(--accent-primary);
    font-weight: 500;
    margin-bottom: 10px;
}

.publication-date {
    color: var(--text-muted);
    font-size: 14px;
    font-family: var(--font-mono);
}

.citation-count {
    color: var(--accent-primary);
    font-weight: 600;
    background: rgba(139, 92, 246, 0.1);
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 12px;
    display: inline-block;
    margin-left: 5px;
}


/* Blog Section */

.blog {
    padding: var(--section-padding);
    background: var(--secondary-bg);
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 32px;
    margin-bottom: 50px;
}

.blog-card {
    background: var(--tertiary-bg);
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    position: relative;
    height: 420px;
    display: flex;
    flex-direction: column;
}

.blog-card:hover {
    transform: translateY(-8px);
    border-color: var(--accent-primary);
    box-shadow: 0 20px 40px rgba(139, 92, 246, 0.15), 0 4px 12px rgba(0, 0, 0, 0.1);
}

.blog-card:focus {
    outline: 2px solid var(--accent-primary);
    outline-offset: 2px;
}

.blog-image {
    height: 200px;
    background: var(--accent-gradient);
    position: relative;
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    padding: 20px;
    background-size: cover;
    background-position: center;
    transition: all 0.4s ease;
}

.blog-card:hover .blog-image {
    transform: scale(1.02);
}

.blog-badge {
    position: absolute;
    top: 16px;
    left: 16px;
    background: linear-gradient(135deg, #ff6b35, #f7931e);
    color: white;
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    box-shadow: 0 4px 12px rgba(255, 107, 53, 0.4);
    backdrop-filter: blur(10px);
}

.blog-category {
    background: var(--tertiary-bg);
    color: var(--text-primary);
    padding: 8px 16px;
    border-radius: 25px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    margin-left: auto;
    margin-top: auto;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: all 0.3s ease;
}

.blog-card:hover .blog-category {
    background: var(--accent-primary);
    color: white;
}

.blog-content {
    padding: 28px;
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.blog-title {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 16px;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    transition: color 0.3s ease;
}

.blog-card:hover .blog-title {
    color: var(--accent-primary);
}

.blog-excerpt {
    color: var(--text-secondary);
    margin-bottom: 24px;
    line-height: 1.6;
    font-size: 15px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    flex: 1;
}

.blog-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-color);
}

.blog-date {
    color: var(--text-muted);
    font-size: 13px;
    font-weight: 500;
    font-family: var(--font-mono);
}

.blog-read-time {
    color: var(--accent-primary);
    font-size: 13px;
    font-weight: 600;
    background: rgba(139, 92, 246, 0.1);
    padding: 4px 10px;
    border-radius: 12px;
}

.blog-external-link {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--accent-primary);
    font-size: 14px;
    font-weight: 600;
    transition: all 0.3s ease;
    padding: 12px 20px;
    background: rgba(139, 92, 246, 0.05);
    border-radius: 10px;
    border: 1px solid rgba(139, 92, 246, 0.1);
    text-align: center;
    justify-content: center;
}

.blog-external-link i {
    font-size: 14px;
    transition: transform 0.3s ease;
}

.blog-card:hover .blog-external-link {
    background: var(--accent-primary);
    color: white;
    border-color: var(--accent-primary);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(139, 92, 246, 0.3);
}

.blog-card:hover .blog-external-link i {
    transform: translateX(3px);
}

.blog-cta {
    text-align: center;
    margin-top: 20px;
}

.blog-cta .btn {
    padding: 16px 32px;
    font-weight: 600;
    border-radius: 12px;
    font-size: 15px;
    transition: all 0.3s ease;
}

.blog-cta .btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(139, 92, 246, 0.3);
}


/* Tablet Optimization (1024px and below) */

@media (max-width: 1024px) {
    .container {
        padding: 0 24px;
    }
    .hero-content {
        gap: 40px;
    }
    .hero-buttons {
        gap: 16px;
    }
    .experience-container {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    .experience-tabs {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        gap: 12px;
        order: 1;
    }
    .experience-content {
        order: 0;
    }
    .skills-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 24px;
    }
    .achievements-grid {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        gap: 20px;
    }
    .publications-grid {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        gap: 24px;
    }
    .publication-card {
        padding: 20px;
    }
    .publication-title {
        font-size: 1.1rem;
    }
    .blog-grid {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        gap: 24px;
    }
    .contact-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    /* Tablet-specific optimizations */
    .section-header {
        margin-bottom: 40px;
    }
    .hero {
        padding: 60px 0;
    }
    .about,
    .experience,
    .skills,
    .achievements {
        padding: 50px 0;
    }
    .publications,
    .blog,
    .contact {
        padding: 50px 0;
    }
    /* Better tablet interactions */
    .publication-card:hover {
        transform: translateY(-3px);
        box-shadow: 0 6px 20px var(--shadow-color);
    }
    .blog-card:hover {
        transform: translateY(-4px);
    }
}


/* Mobile optimizations */

@media (max-width: 768px) {
    .blog {
        padding: 60px 0;
    }
    .blog-grid {
        grid-template-columns: 1fr;
        gap: 20px;
        margin-bottom: 30px;
    }
    .blog-card {
        height: auto;
        min-height: 320px;
        border-radius: 12px;
        margin: 0 8px;
    }
    .blog-image {
        height: 160px;
        padding: 12px;
    }
    .blog-badge {
        top: 12px;
        left: 12px;
        padding: 4px 10px;
        font-size: 10px;
    }
    .blog-category {
        padding: 6px 12px;
        font-size: 11px;
    }
    .blog-content {
        padding: 20px 16px;
    }
    .blog-title {
        font-size: 1.1rem;
        -webkit-line-clamp: 2;
        margin-bottom: 12px;
        line-height: 1.3;
    }
    .blog-excerpt {
        font-size: 13px;
        -webkit-line-clamp: 2;
        margin-bottom: 16px;
        line-height: 1.5;
    }
    .blog-meta {
        margin-bottom: 16px;
        padding-bottom: 12px;
        flex-direction: column;
        gap: 8px;
        align-items: flex-start;
    }
    .blog-date {
        font-size: 12px;
    }
    .blog-read-time {
        font-size: 12px;
        padding: 3px 8px;
        align-self: flex-start;
    }
    .blog-external-link {
        padding: 12px 16px;
        font-size: 13px;
        border-radius: 8px;
        gap: 8px;
    }
    .blog-cta {
        margin-top: 16px;
    }
    .blog-cta .btn {
        padding: 12px 24px;
        font-size: 14px;
        width: 100%;
        max-width: 280px;
    }
}


/* Contact Section */

.contact {
    padding: var(--section-padding);
}

.contact-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 60px;
    max-width: 1000px;
    margin: 0 auto;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.form-group {
    position: relative;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 15px;
    background: var(--secondary-bg);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    color: var(--text-primary);
    font-family: var(--font-primary);
    font-size: 16px;
    transition: var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 20px var(--shadow-color);
}

.form-group label {
    position: absolute;
    top: 15px;
    left: 15px;
    color: var(--text-muted);
    transition: var(--transition-fast);
    pointer-events: none;
}

.form-group input:focus+label,
.form-group input:valid+label,
.form-group textarea:focus+label,
.form-group textarea:valid+label {
    top: -10px;
    left: 10px;
    font-size: 12px;
    color: var(--accent-primary);
    background: var(--primary-bg);
    padding: 0 5px;
}

.contact-card {
    background: var(--secondary-bg);
    padding: 40px 30px;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    height: fit-content;
}

.contact-card h3 {
    color: var(--accent-primary);
    margin-bottom: 20px;
}

.social-links {
    display: flex;
    gap: 15px;
    margin-top: 30px;
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    background: var(--tertiary-bg);
    border-radius: 50%;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    transition: var(--transition-medium);
}

.social-link:hover {
    background: var(--accent-primary);
    color: var(--primary-bg);
    transform: translateY(-3px);
}


/* Footer */

.footer {
    background: var(--secondary-bg);
    border-top: 1px solid var(--border-color);
    padding: 30px 0;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-muted);
    font-size: 14px;
}


/* Responsive Design */

@media (max-width: 768px) {
    .nav-container {
        gap: 15px;
    }
    .nav-menu {
        position: fixed;
        top: 0;
        right: -300px;
        width: 280px;
        height: 100vh;
        background: var(--navbar-mobile-bg);
        backdrop-filter: blur(20px);
        flex-direction: column;
        justify-content: start;
        align-items: flex-start;
        padding: 80px 30px 30px;
        transition: var(--transition-medium);
        box-shadow: -5px 0 20px rgba(0, 0, 0, 0.1);
        z-index: 1001;
    }
    .nav-menu.active {
        right: 0;
    }
    .nav-menu li {
        width: 100%;
        margin-bottom: 8px;
    }
    .nav-link {
        width: 100%;
        padding: 12px 16px;
        border-radius: var(--border-radius);
        transition: var(--transition-fast);
        font-size: 16px;
        font-weight: 500;
    }
    .nav-link:hover {
        background: var(--tertiary-bg);
    }
    .theme-toggle {
        width: 44px;
        height: 44px;
        font-size: 16px;
        min-width: 44px;
        /* Ensure minimum touch target */
    }
    .hamburger {
        display: flex;
        width: 44px;
        height: 44px;
        align-items: center;
        justify-content: center;
        z-index: 1002;
    }
    /* Mobile Navigation Overlay */
    .nav-overlay {
        position: fixed;
        top: 0;
        left: 0;
        width: 100vw;
        height: 100vh;
        background: rgba(0, 0, 0, 0.5);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition-fast);
        z-index: 1;
    }
    .nav-overlay.active {
        opacity: 1;
        visibility: visible;
    }
    .hamburger.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }
    .hamburger.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
    }
    .hero-visual {
        order: -1;
        height: 300px;
    }
    .ai-visualization {
        width: 300px;
        height: 300px;
    }
    .about-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    .about-stats {
        grid-template-columns: repeat(2, 1fr);
    }
    .experience-container {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    .experience-tabs {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 12px;
        order: 1;
    }
    .experience-content {
        order: 0;
        min-height: auto;
        position: relative;
        overflow: hidden;
        /* Enable for swipe gestures */
    }
    .experience-panel {
        padding: 25px;
    }
    /* Mobile Section Spacing */
    .hero {
        padding: 80px 0 60px;
    }
    .about,
    .experience,
    .skills,
    .achievements {
        padding: 40px 0;
    }
    .publications,
    .blog,
    .contact {
        padding: 60px 0;
    }
    /* Optimized Publications for Mobile */
    .publications-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    .publication-card {
        padding: 16px;
        border-radius: 8px;
    }
    .publication-title {
        font-size: 0.95rem;
        margin-bottom: 8px;
        line-height: 1.3;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }
    .publication-journal {
        font-size: 0.85rem;
        margin-bottom: 6px;
        line-height: 1.2;
    }
    .publication-date {
        font-size: 0.75rem;
        display: inline-block;
    }
    .citation-count {
        font-size: 0.7rem;
        padding: 1px 6px;
        margin-left: 8px;
    }
    /* Publication visibility is handled by JavaScript */
    /* Show More Button for Publications */
    .publications-show-more {
        text-align: center;
        margin-top: 24px;
    }
    .publications-show-more .btn {
        background: var(--secondary-bg);
        color: var(--accent-primary);
        border: 2px solid var(--accent-primary);
        padding: 10px 24px;
        font-size: 14px;
        font-weight: 600;
        border-radius: 8px;
        transition: all 0.3s ease;
    }
    .publications-show-more .btn:hover {
        background: var(--accent-primary);
        color: white;
        transform: translateY(-2px);
    }
    .publications-show-more .btn.show-less {
        background: var(--accent-primary);
        color: white;
    }
    /* Publications show more button styling handled by JavaScript */
    .section-header {
        margin-bottom: 40px;
    }
    /* Mobile Performance - Reduce animations */
    .skill-category,
    .achievement-category,
    .achievement-item,
    .timeline-item,
    .timeline-achievement,
    .publication-card,
    .blog-card {
        animation: none !important;
        /* Remove complex animations on mobile */
        opacity: 1 !important;
        transform: none !important;
    }
    /* Mobile Achievements */
    .achievements-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    .achievement-category-header {
        padding: 16px 20px 12px;
    }
    .achievement-category h3 {
        font-size: 1rem;
    }
    .achievement-items {
        padding: 12px 20px 16px;
        gap: 8px;
    }
    .achievement-item {
        padding: 12px;
        gap: 10px;
    }
    .achievement-icon {
        width: 30px;
        height: 30px;
        font-size: 0.9rem;
    }
    .achievement-content h4 {
        font-size: 0.85rem;
    }
    .achievement-content p {
        font-size: 0.7rem;
    }
    .achievement-date {
        font-size: 0.6rem;
        padding: 3px 6px;
    }
    /* Mobile Timeline Styles */
    .achievements-view-toggle {
        flex-direction: column;
        align-items: center;
        gap: 12px;
    }
    .view-toggle-btn {
        min-width: 200px;
        justify-content: center;
    }
    .achievements-timeline {
        padding: 20px 0;
    }
    .timeline-container {
        padding-left: 40px;
    }
    .timeline-line {
        left: 20px;
        width: 3px;
    }
    .timeline-marker {
        left: -10px;
        width: 40px;
        height: 40px;
    }
    .timeline-year {
        font-size: 0.7rem;
    }
    .timeline-content {
        padding: 20px;
        border-radius: 12px;
    }
    .timeline-content::before {
        left: -8px;
        top: 20px;
        border-right: 8px solid var(--primary-bg);
        border-top: 8px solid transparent;
        border-bottom: 8px solid transparent;
    }
    [data-theme="dark"] .timeline-content::before {
        border-right-color: var(--primary-bg);
    }
    .timeline-achievement {
        padding: 16px;
        gap: 12px;
    }
    .timeline-achievement .achievement-content h4 {
        font-size: 0.95rem;
    }
    .timeline-achievement .achievement-content p {
        font-size: 0.8rem;
    }
    .timeline-achievement .achievement-metric {
        font-size: 0.7rem;
        padding: 4px 8px;
    }
    .contact-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    .footer-content {
        flex-direction: column;
        gap: 10px;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    /* Enhanced Touch Targets */
    .btn {
        min-height: 48px;
        width: 100%;
        justify-content: center;
        max-width: 320px;
        font-size: 16px;
        padding: 14px 24px;
    }
    .hero-buttons {
        flex-direction: column;
        align-items: center;
        gap: 16px;
    }
    /* Improved Typography */
    .hero-title {
        font-size: clamp(2.2rem, 8vw, 3.5rem);
        line-height: 1.1;
        margin-bottom: 16px;
    }
    .hero-subtitle {
        font-size: clamp(1.1rem, 4vw, 1.4rem);
        margin-bottom: 24px;
    }
    .section-title {
        font-size: clamp(2rem, 6vw, 2.5rem);
    }
    /* Better Mobile Layout */
    .about-stats {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    .stat-card {
        padding: 24px 20px;
        text-align: center;
    }
    .skills-grid,
    .publications-grid,
    .blog-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    /* Enhanced Experience Tabs for Mobile */
    .experience-tabs {
        grid-template-columns: 1fr;
        gap: 8px;
    }
    .experience-tab {
        min-height: 60px;
        padding: 16px;
        border-radius: 12px;
        touch-action: manipulation;
        /* Improve touch response */
    }
    .tab-title {
        font-size: 15px;
        font-weight: 600;
    }
    .tab-duration {
        font-size: 13px;
        margin-top: 4px;
    }
    /* Better Mobile Forms */
    .form-group input,
    .form-group textarea {
        min-height: 48px;
        font-size: 16px;
        /* Prevent zoom on iOS */
        padding: 14px 16px;
    }
    .contact-form .btn {
        width: 100%;
        margin-top: 16px;
    }
    /* Publication Cards */
    .publication-card {
        padding: 12px;
        border-radius: 6px;
    }
    .publication-title {
        font-size: 0.9rem;
        line-height: 1.3;
        margin-bottom: 6px;
        -webkit-line-clamp: 2;
        display: -webkit-box;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }
    .publication-journal {
        font-size: 0.8rem;
        margin-bottom: 4px;
        line-height: 1.2;
    }
    .publication-date {
        font-size: 0.7rem;
    }
    .citation-count {
        font-size: 0.65rem;
        padding: 1px 4px;
        margin-left: 4px;
    }
    .publications-show-more {
        margin-top: 16px;
    }
    .publications-show-more .btn {
        padding: 8px 16px;
        font-size: 12px;
        border-radius: 6px;
    }
    /* Enhanced Blog Mobile Styles */
    .blog {
        padding: 40px 0;
    }
    .blog-grid {
        gap: 16px;
        margin-bottom: 24px;
    }
    .blog-card {
        min-height: 300px;
        border-radius: 10px;
        margin: 0 4px;
    }
    .blog-image {
        height: 140px;
        padding: 10px;
    }
    .blog-badge {
        top: 8px;
        left: 8px;
        padding: 3px 8px;
        font-size: 9px;
    }
    .blog-category {
        padding: 4px 8px;
        font-size: 10px;
    }
    .blog-content {
        padding: 16px 12px;
    }
    .blog-title {
        font-size: 1rem;
        margin-bottom: 10px;
        line-height: 1.2;
    }
    .blog-excerpt {
        font-size: 12px;
        margin-bottom: 14px;
        line-height: 1.4;
    }
    .blog-meta {
        margin-bottom: 12px;
        padding-bottom: 10px;
        gap: 6px;
    }
    .blog-date {
        font-size: 11px;
    }
    .blog-read-time {
        font-size: 11px;
        padding: 2px 6px;
    }
    .blog-external-link {
        padding: 10px 12px;
        font-size: 12px;
        border-radius: 6px;
        gap: 6px;
    }
    .blog-cta {
        margin-top: 12px;
    }
    .blog-cta .btn {
        padding: 10px 20px;
        font-size: 13px;
        max-width: 240px;
    }
    /* Disable hover effects on mobile for better touch experience */
    .blog-card:hover {
        transform: none;
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    }
    .blog-card:hover .blog-image {
        transform: none;
    }
    .blog-card:hover .blog-title {
        color: var(--text-primary);
    }
    .blog-card:hover .blog-category {
        background: rgba(255, 255, 255, 0.95);
        color: var(--text-primary);
    }
    .blog-card:hover .blog-external-link {
        background: rgba(139, 92, 246, 0.1);
        color: var(--accent-primary);
        border-color: rgba(139, 92, 246, 0.1);
        transform: none;
        box-shadow: none;
    }
    .blog-card:hover .blog-external-link i {
        transform: none;
    }
    .blog-cta .btn:hover {
        transform: none;
        box-shadow: 0 4px 12px rgba(139, 92, 246, 0.2);
    }
    /* Touch-friendly interactions */
    .blog-card {
        touch-action: manipulation;
        -webkit-tap-highlight-color: transparent;
    }
    .blog-external-link {
        touch-action: manipulation;
        -webkit-tap-highlight-color: transparent;
    }
}


/* Enhanced hover handling for touch devices */

@media (hover: none) and (pointer: coarse) {
    .blog-card:hover {
        transform: none !important;
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1) !important;
    }
    .blog-card:hover .blog-image {
        transform: none !important;
    }
    .blog-card:hover .blog-title {
        color: var(--text-primary) !important;
    }
    .blog-card:hover .blog-category {
        background: rgba(255, 255, 255, 0.95) !important;
        color: var(--text-primary) !important;
    }
    .blog-card:hover .blog-external-link {
        background: rgba(139, 92, 246, 0.1) !important;
        color: var(--accent-primary) !important;
        border-color: rgba(139, 92, 246, 0.1) !important;
        transform: none !important;
        box-shadow: none !important;
    }
    .blog-card:hover .blog-external-link i {
        transform: none !important;
    }
}


/* Animations */

@keyframes pulse {
    0%,
    100% {
        opacity: 1;
    }
    50% {
        opacity: 0.3;
    }
}

@keyframes bounce {
    0%,
    20%,
    50%,
    80%,
    100% {
        transform: translateY(0) rotate(45deg);
    }
    40% {
        transform: translateY(-10px) rotate(45deg);
    }
    60% {
        transform: translateY(-5px) rotate(45deg);
    }
}


/* Loading dots animation for form submission */

.loading-dots {
    display: inline-flex;
    gap: 4px;
    align-items: center;
}

.loading-dots span {
    width: 6px;
    height: 6px;
    background: currentColor;
    border-radius: 50%;
    animation: loading-dot 1.4s infinite ease-in-out both;
}

.loading-dots span:nth-child(1) {
    animation-delay: -0.32s;
}

.loading-dots span:nth-child(2) {
    animation-delay: -0.16s;
}

.loading-dots span:nth-child(3) {
    animation-delay: 0s;
}

@keyframes loading-dot {
    0%,
    80%,
    100% {
        transform: scale(0.8);
        opacity: 0.5;
    }
    40% {
        transform: scale(1);
        opacity: 1;
    }
}


/* Notification styles */

.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    background: var(--secondary-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 16px 20px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    transform: translateX(400px);
    transition: transform 0.3s ease;
    z-index: 9999;
    max-width: 400px;
    backdrop-filter: blur(10px);
}

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

.notification-content {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 500;
    color: var(--text-primary);
}

.notification-success {
    border-left: 4px solid #10b981;
}

.notification-success .fas {
    color: #10b981;
}

.notification-error {
    border-left: 4px solid #ef4444;
}

.notification-error .fas {
    color: #ef4444;
}

.notification-info {
    border-left: 4px solid var(--accent-primary);
}

.notification-info .fas {
    color: var(--accent-primary);
}