/* CSS Reset and Variables */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

.footer-copyright {
    color: #ffffff;
    font-size: 14px;
    font-family: 'Segoe UI', sans-serif;
    text-align: center;
    padding: 15px 20px;
    text-shadow: 0 0 6px #6d6dfb;
    background-color: transparent;
}
/* Responsive Navigation */
.mobile-menu-toggle {
    display: none;
    font-size: 1.8rem;
    cursor: pointer;
    color: var(--text-primary);
}

@media (max-width: 768px) {
    .nav-container {
        flex-direction: row;
        justify-content: space-between;
    }

    .logo {
        margin-right: auto;
    }

    .nav-links {
        position: absolute;
        top: 100%;
        right: 0;
        left: 0;
        background: var(--card-bg);
        flex-direction: column;
        gap: 1.2rem;
        padding: 1rem 2rem;
        width: 100%;
        display: none;
        z-index: 999;
    }

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

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



:root {
    /* Color Palette - Iron Man Theme */
    --primary-red: #ff0000;
    --primary-gold: #ffd700;
    --primary-blue: #ff6b35;
    --secondary-red: #cc0000;
    --secondary-gold: #ffed4e;
    --accent-orange: #ff6600;
    --dark-bg: #0a0a0f;
    --darker-bg: #050508;
    --card-bg: rgba(15, 15, 25, 0.8);
    --glass-bg: rgba(255, 255, 255, 0.05);
    --text-primary: #ffffff;
    --text-secondary: #b4b4b8;
    --text-muted: #6b7280;
    
    /* Gradients - Iron Man Theme */
    --gradient-primary: linear-gradient(135deg, #ff0000, #ffd700);
    --gradient-secondary: linear-gradient(135deg, #ffd700, #0066cc);
    --gradient-accent: linear-gradient(135deg, #ff6600, #ff0000);
    
    /* Glows - Iron Man Theme */
    --glow-red: 0 0 20px rgba(255, 0, 0, 0.5);
    --glow-gold: 0 0 20px rgba(255, 215, 0, 0.5);
    --glow-blue: 0 0 20px rgba(255, 107, 53, 0.5);
    
    /* Spacing */
    --section-padding: 6rem 0;
    --container-padding: 0 2rem;
    
    /* Typography */
    --font-primary: 'Inter', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
}

/* Base Styles */
html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    font-family: var(--font-primary);
    background: var(--dark-bg);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
    background-image: 
        radial-gradient(circle at 20% 80%, rgba(139, 92, 246, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(0, 217, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(244, 114, 182, 0.05) 0%, transparent 50%);
}

/* Loading Screen */
#loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--darker-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

#loading-screen.hidden {
    opacity: 0;
    visibility: hidden;
}

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

.loading-avatar {
    margin-bottom: 2rem;
}

.avatar-placeholder {
    width: 120px;
    height: 120px;
    margin: 0 auto;
    border-radius: 50%;
    background: var(--gradient-primary);
    position: relative;
    animation: avatarPulse 2s infinite;
}

.avatar-placeholder::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80%;
    height: 80%;
    border-radius: 50%;
    background: var(--dark-bg);
}

@keyframes avatarPulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

.loading-text h2 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.loading-bar {
    width: 300px;
    height: 4px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 2px;
    overflow: hidden;
    margin: 0 auto;
}

.loading-progress {
    height: 100%;
    background: var(--gradient-primary);
    border-radius: 2px;
    animation: loadingProgress 3s ease-in-out;
}

@keyframes loadingProgress {
    0% { width: 0%; }
    100% { width: 100%; }
}

/* Navigation */
#navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(10, 10, 15, 0.9);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    z-index: 1000;
    padding: 1rem 0;
    transition: all 0.3s ease;
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width 0.3s ease;
}

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

/* 3D Scene Container */
#scene-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    pointer-events: none;
    display: block !important; /* Force display on mobile */
}

#three-canvas {
    display: block;
    width: 100%;
    height: 100%;
}

/* Speech Bubble */
#speech-bubble {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: var(--card-bg);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 15px;
    padding: 1rem 1.5rem;
    max-width: 400px;
    z-index: 1001;
    box-shadow: var(--glow-blue);
    transition: all 0.3s ease;
}

#speech-bubble.hidden {
    opacity: 0;
    visibility: hidden;
    transform: translate(-50%, -50%) scale(0.8);
}

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

.speech-arrow {
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 0;
    border-left: 10px solid transparent;
    border-right: 10px solid transparent;
    border-top: 10px solid var(--card-bg);
}





/* Main Content */
#main-content {
    position: relative;
    z-index: 1;
}

/* Sections */
.section {
    min-height: 100vh;
    padding: var(--section-padding);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.section-content {
    max-width: 1200px;
    width: 100%;
    padding: var(--container-padding);
}

/* Home Section */
#home {
    text-align: center;
}

.main-title {
    font-size: clamp(3rem, 8vw, 6rem);
    font-weight: 900;
    line-height: 1;
    margin-bottom: 1rem;
}

.title-line {
    display: block;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: titleGlow 3s ease-in-out infinite alternate;
}

@keyframes titleGlow {
    0% { filter: drop-shadow(0 0 10px rgba(255, 0, 0, 0.5)); }
    100% { filter: drop-shadow(0 0 30px rgba(255, 215, 0, 0.8)); }
}

.subtitle {
    font-size: 1.5rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
    font-weight: 300;
}

.location {
    font-size: 1.1rem;
    color: var(--text-muted);
    margin-bottom: 3rem;
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Buttons */
.btn {
    padding: 1rem 2rem;
    border: none;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    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, 0.2), transparent);
    transition: left 0.5s ease;
}

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

.btn.primary {
    background: var(--gradient-primary);
    color: var(--dark-bg);
    box-shadow: var(--glow-red);
}

.btn.primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(255, 0, 0, 0.4);
}

.btn.secondary {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn.secondary:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(255, 255, 255, 0.1);
}

/* Section Titles */
.section-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    text-align: center;
    margin-bottom: 4rem;
    background: var(--gradient-secondary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 3px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

/* About Section */
.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.about-card {
    background: var(--card-bg);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: 2rem;
    text-align: center;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.about-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-primary);
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: -1;
}

.about-card:hover::before {
    opacity: 0.1;
}

.about-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 217, 255, 0.2);
}

.card-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;
    font-size: 2rem;
    color: var(--dark-bg);
}

.about-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.about-card p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Skills Section */
.skills-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 3rem;
    margin-top: 2rem;
}

.skill-category {
    background: var(--card-bg);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: 2rem;
    transition: all 0.3s ease;
}

.skill-category:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(139, 92, 246, 0.2);
}

.skill-category h3 {
    font-size: 1.3rem;
    margin-bottom: 1.5rem;
    color: var(--primary-blue);
    text-align: center;
}

.skill-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 1rem;
}

.skill-item {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    padding: 1rem;
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.skill-item::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.5s ease;
}

.skill-item:hover::before {
    transform: scaleX(calc(var(--level) / 100));
}

.skill-item:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.1);
    box-shadow: var(--glow-blue);
}

.skill-item i {
    font-size: 2rem;
    color: var(--primary-blue);
    margin-bottom: 0.5rem;
    display: block;
}

.skill-item span {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Projects Section */
.projects-carousel {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.project-card {
    background: var(--card-bg);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    overflow: hidden;
    transition: all 0.3s ease;
    cursor: pointer;
    position: relative;
    group: hover;
}

.project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-accent);
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: -1;
}

.project-card:hover::before {
    opacity: 0.1;
}

.project-card:hover {
    transform: translateY(-10px) rotateX(5deg);
    box-shadow: 0 20px 40px rgba(244, 114, 182, 0.3);
}

.project-image {
    height: 200px;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: var(--dark-bg);
}

.project-info {
    padding: 2rem;
}

.project-info h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.project-info p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.project-tech span {
    background: rgba(255, 255, 255, 0.1);
    color: var(--primary-blue);
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--primary-blue);
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
}

.project-link:hover {
    text-shadow: var(--glow-blue);
    transform: translateX(5px);
}

/* Experience Timeline */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--gradient-primary);
    transform: translateX(-50%);
}

.timeline-item {
    position: relative;
    margin: 3rem 0;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.6s ease forwards;
}

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

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

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

.timeline-marker {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    width: 20px;
    height: 20px;
    background: var(--primary-blue);
    border-radius: 50%;
    box-shadow: var(--glow-blue);
    z-index: 2;
}

.timeline-content {
    background: var(--card-bg);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    padding: 2rem;
    width: 45%;
    position: relative;
    transition: all 0.3s ease;
}

.timeline-item:nth-child(odd) .timeline-content {
    margin-right: auto;
    margin-left: 55%;
}

.timeline-item:nth-child(even) .timeline-content {
    margin-left: auto;
    margin-right: 55%;
}

.timeline-content:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(139, 92, 246, 0.2);
}

.timeline-content h3 {
    color: var(--primary-blue);
    margin-bottom: 0.5rem;
}

.timeline-content h4 {
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.timeline-date {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 1rem;
    display: block;
}

.timeline-content p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Contact Section */
.contact-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    margin-top: 2rem;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--card-bg);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    transition: all 0.3s ease;
}

.contact-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--glow-blue);
}

.contact-item i {
    font-size: 1.5rem;
    color: var(--primary-blue);
    width: 40px;
    text-align: center;
}

.contact-item h3 {
    color: var(--text-primary);
    margin-bottom: 0.3rem;
}

.contact-item a,
.contact-item span {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

/* Download Resume Item */
.download-resume-item {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 1.5rem;
    background: var(--card-bg);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    transition: all 0.3s ease;
}

.download-resume-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--glow-blue);
}

.download-resume-item .btn {
    margin: 0;
    width: auto;
    min-width: 200px;
}

/* Contact Form */
.contact-form {
    background: var(--card-bg);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: 2rem;
}

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

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    color: var(--text-primary);
    font-family: var(--font-primary);
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: var(--glow-blue);
    background: rgba(255, 255, 255, 0.1);
}

.form-group textarea {
    min-height: 120px;
    resize: vertical;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-muted);
}

/* Particles */
#particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .timeline::before {
        left: 2rem;
    }
    
    .timeline-item:nth-child(odd) .timeline-content,
    .timeline-item:nth-child(even) .timeline-content {
        width: calc(100% - 4rem);
        margin-left: 4rem;
        margin-right: 0;
    }
    
    .timeline-marker {
        left: 2rem;
    }
    
    .contact-container {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .nav-links.active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--card-bg);
        backdrop-filter: blur(20px);
        border: 1px solid rgba(255, 255, 255, 0.1);
        padding: 1rem;
        z-index: 1000;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
        gap: 1rem;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .skills-container {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .projects-carousel {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .skill-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }
    
    .contact-container {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .contact-info {
        display: flex;
        flex-direction: column;
        gap: 1rem;
    }
    
    .download-resume-item {
        margin-top: 1rem;
    }
    
    .download-resume-item .btn {
        min-width: 180px;
        font-size: 0.9rem;
    }
    
    /* Avatar positioning for mobile */
    #scene-container {
        z-index: 1;
    }
    
    /* Ensure text is readable over avatar */
    .section-content {
        position: relative;
        z-index: 2;
    }
}

@media (max-width: 480px) {
    :root {
        --container-padding: 0 1rem;
    }
    
    .main-title {
        font-size: 2.5rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .timeline-content {
        padding: 1rem;
    }
    
    .contact-form {
        padding: 1rem;
    }
    
    .skill-grid {
        grid-template-columns: 1fr;
        gap: 0.8rem;
    }
    
    .project-card {
        padding: 1rem;
    }
    
    .about-card {
        padding: 1.5rem;
    }
    
    .contact-item {
        padding: 1rem;
    }
    
    .download-resume-item {
        padding: 1rem;
    }
    
    .download-resume-item .btn {
        min-width: 160px;
        font-size: 0.85rem;
        padding: 0.8rem 1.2rem;
    }
    
    .btn {
        font-size: 0.9rem;
        padding: 0.8rem 1.5rem;
    }
    
    .cta-buttons {
        gap: 0.8rem;
    }
    
    .cta-buttons .btn {
        width: 100%;
        max-width: 250px;
    }
}

/* Utility Classes */
.hidden {
    opacity: 0 !important;
    visibility: hidden !important;
}

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

/* Animation Keyframes */
@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

@keyframes glow {
    0%, 100% { box-shadow: 0 0 20px rgba(0, 217, 255, 0.3); }
    50% { box-shadow: 0 0 40px rgba(139, 92, 246, 0.6); }
}

@keyframes shimmer {
    0% { background-position: -200px 0; }
    100% { background-position: calc(200px + 100%) 0; }
}

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

::-webkit-scrollbar-track {
    background: var(--darker-bg);
}

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

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

/* Selection Styling */
::selection {
    background: var(--primary-blue);
    color: var(--dark-bg);
}

::-moz-selection {
    background: var(--primary-blue);
    color: var(--dark-bg);
}
.cert-card {
    background: var(--card-bg);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: 2.5rem;
    max-width: 800px;
    margin: 0 auto;
    box-shadow: 0 10px 30px rgba(0, 217, 255, 0.1);
    transition: all 0.3s ease;
    animation: fadeInCerts 1s ease;
}

.cert-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 217, 255, 0.15);
}

.cert-list {
    list-style: none;
    padding-left: 0;
    color: var(--text-secondary);
    font-size: 1.05rem;
    line-height: 1.9;
    font-family: 'Segoe UI', sans-serif;
}

.cert-list li {
    margin-bottom: 0.6rem;
    position: relative;
    padding-left: 1.2rem;
}

.cert-list li::before {
    content: '▹';
    position: absolute;
    left: 0;
    color: var(--primary-blue);
    font-size: 1rem;
}

.cert-list strong {
    color: var(--primary-blue);
}

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

/* Loading spinner styles */
.fa-spinner {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Disabled button styles */
.btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    pointer-events: none;
}