/* Custom CSS - IEEE WCCI 2026 Special Session Website */

:root {
    --primary-color: #1e3a8a;
    --secondary-color: #1e40af;
    --accent-color: #f59e0b;
    --success-color: #10b981;
    --dark-color: #1f2937;
    --light-color: #f8fafc;
    --text-color: #374151;
    --text-light: #6b7280;
    --border-color: #e5e7eb;
    --academic-blue: #2563eb;
    --academic-navy: #1e40af;
    --conference-gold: #f59e0b;
    --shadow-light: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-medium: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-heavy: 0 20px 25px rgba(0, 0, 0, 0.15);
    --gradient-primary: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 100%);
    --gradient-secondary: linear-gradient(135deg, #f59e0b 0%, #f97316 100%);
    --gradient-academic: linear-gradient(135deg, #1e40af 0%, #3b82f6 50%, #06b6d4 100%);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    overflow-x: hidden;
}

/* Academic Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: 'Roboto Slab', serif;
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: 1rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    background: var(--gradient-academic);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: var(--conference-gold);
    border-radius: 2px;
}

/* Navigation */
.custom-navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(30, 58, 138, 0.1);
    transition: var(--transition);
    padding: 1rem 0;
}

.navbar-brand {
    font-size: 1.4rem;
    color: var(--academic-blue) !important;
    font-weight: 700;
}

.navbar-nav .nav-link {
    color: var(--text-color) !important;
    font-weight: 500;
    margin: 0 0.5rem;
    padding: 0.5rem 1rem !important;
    border-radius: 25px;
    transition: var(--transition);
}

.navbar-nav .nav-link:hover,
.navbar-nav .nav-link.active {
    color: var(--academic-blue) !important;
    background: rgba(30, 58, 138, 0.1);
}

/* Hero Section */
.hero-section {
    height: 100vh;
    background: var(--gradient-academic);
    position: relative;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.2);
    z-index: 1;
}

.conference-badge {
    background: rgba(245, 158, 11, 0.2);
    color: white;
    padding: 0.5rem 1.5rem;
    border-radius: 50px;
    border: 2px solid rgba(245, 158, 11, 0.5);
    display: inline-block;
    font-weight: 600;
    backdrop-filter: blur(10px);
}

.hero-title {
    font-size: 3.2rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    line-height: 1.1;
}

.hero-subtitle {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.95;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.hero-stats {
    margin-top: 3rem;
}

.hero-stats .stat-item {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    padding: 1.5rem 1rem;
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.hero-stats .stat-icon {
    font-size: 2rem;
    color: var(--conference-gold);
    margin-bottom: 0.5rem;
}

.hero-stats .stat-number {
    font-size: 1.8rem;
    font-weight: 800;
    color: white;
    margin-bottom: 0.5rem;
}

.hero-stats .stat-label {
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.9rem;
    margin: 0;
}

/* Abstract Section */
.abstract-content {
    background: white;
    padding: 3rem;
    border-radius: 20px;
    box-shadow: var(--shadow-heavy);
    border: 1px solid var(--border-color);
}

.abstract-main,
.session-objectives,
.ml-techniques,
.impact-section {
    margin-bottom: 2rem;
}

.session-objectives h4,
.ml-techniques h4,
.impact-section h4 {
    color: var(--academic-blue);
    border-bottom: 2px solid var(--conference-gold);
    padding-bottom: 0.5rem;
    margin-bottom: 1.5rem;
}

.technique-card {
    background: var(--gradient-primary);
    color: white;
    padding: 1.5rem;
    border-radius: 15px;
    text-align: center;
    transition: var(--transition);
    height: 100%;
}

.technique-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-medium);
}

.technique-card i {
    font-size: 2rem;
    margin-bottom: 1rem;
    display: block;
}

.technique-card h6 {
    margin-bottom: 0.75rem;
    font-weight: 600;
}

.technique-card p {
    font-size: 0.9rem;
    opacity: 0.9;
    margin: 0;
}

.objectives-list .objective-item {
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border-color);
    font-weight: 500;
}

.objectives-list .objective-item:last-child {
    border-bottom: none;
}

/* Domain Cards */
.domain-card {
    background: white;
    padding: 2rem 1rem;
    border-radius: 15px;
    text-align: center;
    transition: var(--transition);
    border: 2px solid var(--border-color);
    height: 100%;
}

.domain-card:hover {
    border-color: var(--academic-blue);
    transform: translateY(-5px);
    box-shadow: var(--shadow-medium);
}

.domain-card i {
    font-size: 2.5rem;
    color: var(--academic-blue);
    margin-bottom: 1rem;
    display: block;
}

.domain-card h6 {
    color: var(--text-color);
    font-weight: 600;
    margin: 0;
}

/* Organizer Cards */
.organizer-card {
    background: white;
    border-radius: 20px;
    padding: 2rem;
    box-shadow: var(--shadow-medium);
    border: 1px solid var(--border-color);
    transition: var(--transition);
    height: 100%;
}

.organizer-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-heavy);
}

.organizer-header {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
    align-items: flex-start;
}

.organizer-avatar img{
    width: 80px;
    height: 80px;
    /*background: var(--gradient-primary);
    color: white;
    */
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    flex-shrink: 0;
}

.organizer-info h4 {
    color: var(--academic-blue);
    margin-bottom: 0.5rem;
    font-size: 1.2rem;
}

.organizer-info .title {
    color: var(--conference-gold);
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.organizer-info .affiliation {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.organizer-links {
    display: flex;
    gap: 0.5rem;
}

.contact-link {
    width: 35px;
    height: 35px;
    background: var(--academic-blue);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    transition: var(--transition);
}

.contact-link:hover {
    background: var(--conference-gold);
    color: white;
    transform: scale(1.1);
}

.organizer-bio {
    color: var(--text-color);
    line-height: 1.6;
    font-size: 0.95rem;
}

/* Paper Cards */
.paper-card {
    background: white;
    border-radius: 20px;
    padding: 2rem;
    box-shadow: var(--shadow-medium);
    border: 1px solid var(--border-color);
    transition: var(--transition);
    height: 100%;
    display: flex;
    flex-direction: column;
}

.paper-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-heavy);
    border-color: var(--academic-blue);
}

.paper-icon {
    width: 70px;
    height: 70px;
    background: var(--gradient-secondary);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
}

.paper-title {
    color: var(--academic-blue);
    font-size: 1.1rem;
    margin-bottom: 1rem;
    line-height: 1.4;
}

.paper-authors {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: 1rem;
    font-weight: 500;
}

.paper-abstract {
    color: var(--text-color);
    font-size: 0.95rem;
    line-height: 1.6;
    flex-grow: 1;
    margin-bottom: 1.5rem;
}

.paper-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tag {
    background: var(--academic-blue);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 500;
}

/* Submission Section */
.submission-guidelines {
    background: white;
    padding: 3rem;
    border-radius: 20px;
    box-shadow: var(--shadow-medium);
}

.topic-item,
.requirements-list li {
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border-color);
}

.topic-item:last-child,
.requirements-list li:last-child {
    border-bottom: none;
}

.requirements-list {
    list-style: none;
    padding: 0;
}

.requirements-list li {
    position: relative;
    padding-left: 1.5rem;
}

.requirements-list li::before {
    content: '•';
    color: var(--academic-blue);
    font-weight: bold;
    position: absolute;
    left: 0;
}

.date-card {
    background: var(--gradient-primary);
    color: white;
    padding: 1.5rem;
    border-radius: 15px;
    text-align: center;
}

.date-card h6 {
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
    opacity: 0.9;
}

.date-text {
    font-size: 1.2rem;
    font-weight: 700;
    margin: 0;
}

.submission-cta {
    background: white;
    padding: 3rem;
    border-radius: 20px;
    box-shadow: var(--shadow-medium);
}

/* Contact Cards */
.contact-card {
    background: rgba(255, 255, 255, 0.1);
    padding: 2rem;
    border-radius: 20px;
    text-align: center;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: var(--transition);
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    min-height: 250px;
}

.contact-card:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-5px);
}

.contact-icon {
    width: 70px;
    height: 70px;
    background: var(--conference-gold);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    color: white;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.contact-card h5 {
    color: white;
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
    line-height: 1.3;
}

.contact-role {
    color: var(--conference-gold);
    font-weight: 600;
    margin-bottom: 1rem;
    font-size: 0.9rem;
}

.contact-email {
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
    font-size: 0.85rem;
    transition: var(--transition);
    word-break: break-word;
    margin-top: auto;
}

.contact-email:hover {
    color: white;
}

.conference-info {
    background: rgba(255, 255, 255, 0.1);
    padding: 2rem;
    border-radius: 20px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

/* Footer */
.footer {
    background: #111827;
    padding: 3rem 0;
    color: white;
}

.footer-content {
    max-width: 800px;
    margin: 0 auto;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.footer-link {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: var(--transition);
}

.footer-link:hover {
    color: var(--conference-gold);
}

.copyright {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
}

/* Buttons */
.btn {
    border-radius: 50px;
    font-weight: 600;
    padding: 0.75rem 2rem;
    transition: var(--transition);
    border: none;
}

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

.btn-primary:hover {
    background: var(--academic-navy);
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

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

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

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fade-in {
    animation: fadeIn 1s ease-out;
}

.animate-fade-in-delay {
    animation: fadeIn 1s ease-out 0.3s both;
}

.animate-fade-in-delay-2 {
    animation: fadeIn 1s ease-out 0.6s both;
}

.animate-fade-in-delay-3 {
    animation: fadeIn 1s ease-out 0.9s both;
}

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

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    color: white;
    font-size: 1.5rem;
    animation: bounce 2s infinite;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.2rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .organizer-header {
        flex-direction: column;
        text-align: center;
    }
    
    .organizer-avatar {
        margin: 0 auto 1rem;
    }
    
    .abstract-content,
    .submission-guidelines,
    .submission-cta {
        padding: 2rem;
    }
    
    .footer-links {
        gap: 1rem;
    }
}

@media (max-width: 576px) {
    .hero-title {
        font-size: 1.8rem;
    }
    
    .section-padding {
        padding: 3rem 0;
    }
    
    .paper-card,
    .organizer-card,
    .contact-card {
        padding: 1.5rem;
    }
    
    .abstract-content,
    .submission-guidelines {
        padding: 1.5rem;
    }
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

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

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

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 4px;
}

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

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

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    background: var(--gradient-primary);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: var(--accent-color);
    border-radius: 2px;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
}

/* Navigation */
.custom-navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    transition: var(--transition);
    padding: 1rem 0;
}

.custom-navbar.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-medium);
}

.navbar-brand {
    font-size: 1.5rem;
    color: var(--primary-color) !important;
    text-decoration: none;
}

.navbar-nav .nav-link {
    color: var(--text-color) !important;
    font-weight: 500;
    margin: 0 0.5rem;
    padding: 0.5rem 1rem !important;
    border-radius: 50px;
    transition: var(--transition);
    position: relative;
}

.navbar-nav .nav-link:hover {
    color: var(--primary-color) !important;
    background: rgba(37, 99, 235, 0.1);
}

.navbar-nav .nav-link.active {
    color: var(--primary-color) !important;
    background: rgba(37, 99, 235, 0.1);
}

/* Hero Section */
.hero-section {
    height: 100vh;
    background: var(--gradient-primary);
    position: relative;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.3);
    z-index: 1;
}

.hero-section .container {
    position: relative;
    z-index: 2;
}

.hero-title {
    font-size: 4rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
    font-size: 1.3rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.hero-buttons .btn {
    padding: 0.75rem 2rem;
    font-weight: 600;
    border-radius: 50px;
    transition: var(--transition);
    text-decoration: none;
    display: inline-block;
}

.btn-primary {
    background: var(--accent-color);
    border: none;
    color: white;
}

.btn-primary:hover {
    background: #d97706;
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.btn-outline-light:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    color: white;
    font-size: 1.5rem;
    animation: bounce 2s infinite;
}

/* Animations */
@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    40% {
        transform: translateX(-50%) translateY(-10px);
    }
    60% {
        transform: translateX(-50%) translateY(-5px);
    }
}

.animate-fade-in {
    animation: fadeIn 1s ease-out;
}

.animate-fade-in-delay {
    animation: fadeIn 1s ease-out 0.3s both;
}

.animate-fade-in-delay-2 {
    animation: fadeIn 1s ease-out 0.6s both;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Sections */
.section-padding {
    padding: 6rem 0;
}

/* About Section */
.about-content {
    padding-right: 2rem;
}

.about-content .lead {
    font-size: 1.2rem;
    color: var(--text-light);
}

.stats-row {
    display: flex;
    gap: 2rem;
    margin-top: 2rem;
}

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

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-light);
    margin: 0;
}

.about-image {
    position: relative;
    height: 400px;
}

.image-placeholder {
    background: var(--gradient-secondary);
    height: 100%;
    border-radius: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.2rem;
    box-shadow: var(--shadow-heavy);
}

/* Services Section */
.service-card {
    background: white;
    padding: 2.5rem 2rem;
    border-radius: 20px;
    text-align: center;
    transition: var(--transition);
    border: 1px solid var(--border-color);
    height: 100%;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-heavy);
    border-color: var(--primary-color);
}

.service-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 2rem;
}

.service-card h4 {
    margin-bottom: 1rem;
    color: var(--dark-color);
}

.service-card p {
    color: var(--text-light);
    margin-bottom: 1.5rem;
}

.service-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
}

.service-link:hover {
    color: var(--secondary-color);
}

/* Portfolio Section */
.portfolio-item {
    position: relative;
    overflow: hidden;
    border-radius: 15px;
    box-shadow: var(--shadow-medium);
    transition: var(--transition);
}

.portfolio-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-heavy);
}

.portfolio-image {
    position: relative;
    height: 250px;
    overflow: hidden;
}

.portfolio-image .image-placeholder {
    background: var(--gradient-primary);
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: white;
}

.portfolio-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(37, 99, 235, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

.portfolio-item:hover .portfolio-overlay {
    opacity: 1;
}

.portfolio-info {
    text-align: center;
    color: white;
}

.portfolio-info h5 {
    margin-bottom: 0.5rem;
}

.portfolio-info p {
    margin-bottom: 1rem;
    opacity: 0.9;
}

/* Contact Section */
.contact-form {
    background: rgba(255, 255, 255, 0.1);
    padding: 3rem;
    border-radius: 20px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: white;
}

.form-control {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 10px;
    color: white;
    padding: 0.75rem 1rem;
    transition: var(--transition);
}

.form-control:focus {
    background: rgba(255, 255, 255, 0.15);
    border-color: var(--accent-color);
    box-shadow: 0 0 0 0.2rem rgba(245, 158, 11, 0.25);
    color: white;
}

.form-control::placeholder {
    color: rgba(255, 255, 255, 0.7);
}

.contact-item {
    text-align: center;
    color: white;
}

.contact-item i {
    color: var(--accent-color);
    margin-bottom: 1rem;
}

.contact-item h5 {
    margin-bottom: 1rem;
}

.contact-item p {
    opacity: 0.9;
    margin: 0;
}

/* Footer */
.footer {
    background: #111827;
    padding: 2rem 0;
    color: white;
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 1rem;
}

.social-link {
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-decoration: none;
    transition: var(--transition);
}

.social-link:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-medium);
    color: white;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .stats-row {
        flex-direction: column;
        gap: 1rem;
    }
    
    .about-content {
        padding-right: 0;
        margin-bottom: 2rem;
    }
    
    .contact-form {
        padding: 2rem 1.5rem;
    }
    
    .hero-buttons .btn {
        display: block;
        margin-bottom: 1rem;
        text-align: center;
    }
}

@media (max-width: 576px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .section-padding {
        padding: 3rem 0;
    }
    
    .service-card,
    .contact-form {
        padding: 1.5rem;
    }
}

/* Custom Button Styles */
.btn {
    border-radius: 50px;
    font-weight: 600;
    padding: 0.75rem 2rem;
    transition: var(--transition);
    border: none;
}

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

.btn-primary:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

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

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

/* Loading Animation */
.loading {
    opacity: 0;
    transform: translateY(30px);
    transition: var(--transition);
}

.loading.loaded {
    opacity: 1;
    transform: translateY(0);
}

/* Background Patterns */
.bg-pattern {
    position: relative;
    overflow: hidden;
}

.bg-pattern::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 25% 25%, rgba(255, 255, 255, 0.1) 2px, transparent 2px),
        radial-gradient(circle at 75% 75%, rgba(255, 255, 255, 0.1) 2px, transparent 2px);
    background-size: 60px 60px;
    background-position: 0 0, 30px 30px;
    pointer-events: none;
}

/* Utility Classes */
.text-gradient {
    background: var(--gradient-primary);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.shadow-custom {
    box-shadow: var(--shadow-heavy);
}

.border-gradient {
    border: 2px solid transparent;
    background: linear-gradient(white, white) padding-box,
                var(--gradient-primary) border-box;
}