/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Skip link for accessibility */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--accent-blue, #00d4ff);
    color: #ffffff;
    padding: 8px 16px;
    text-decoration: none;
    font-weight: 600;
    z-index: 10000;
    border-radius: 0 0 4px 0;
}

.skip-link:focus {
    top: 0;
}

:root {
    --primary-dark: #0a0f1c;
    --secondary-dark: #1a1f2e;
    --tertiary-dark: #2a2f3e;
    --accent-blue: #00d4ff;
    --accent-purple: #6c5ce7;
    --accent-green: #00b894;
    --text-primary: #ffffff;
    --text-secondary: #a0a9c0;
    --text-muted: #6c757d;
    --node-primary: #00d4ff;
    --node-secondary: #6c5ce7;
    --connection-line: rgba(0, 212, 255, 0.3);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--primary-dark);
    background-image: 
        radial-gradient(circle at 20% 80%, rgba(108, 92, 231, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(0, 212, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(0, 184, 148, 0.05) 0%, transparent 50%);
    min-height: 100vh;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Navigation */
.navbar {
    background: rgba(10, 15, 28, 0.95);
    backdrop-filter: blur(20px);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    border-bottom: 1px solid rgba(0, 212, 255, 0.2);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo a {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--accent-blue);
    text-decoration: none;
    position: relative;
}

.nav-logo a::before {
    content: '';
    position: absolute;
    left: -10px;
    top: 50%;
    transform: translateY(-50%);
    width: 8px;
    height: 8px;
    background: var(--accent-blue);
    border-radius: 50%;
    box-shadow: 
        0 0 10px var(--accent-blue),
        0 0 20px var(--accent-blue),
        0 0 30px var(--accent-blue);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { 
        opacity: 1; 
        transform: translateY(-50%) scale(1);
    }
    50% { 
        opacity: 0.7; 
        transform: translateY(-50%) scale(1.1);
    }
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
    padding: 0.5rem 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--accent-blue), var(--accent-purple));
    transition: width 0.3s ease;
}

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

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

/* Main content */
.main-content {
    margin-top: 80px;
    min-height: calc(100vh - 140px);
}

/* Hero section with network background */
.hero {
    padding: 6rem 0;
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--secondary-dark) 100%);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    opacity: 0;
    pointer-events: none;
}

@keyframes networkFloat {
    0%, 100% { transform: translateY(0) translateX(0); }
    25% { transform: translateY(-20px) translateX(10px); }
    50% { transform: translateY(0) translateX(-10px); }
    75% { transform: translateY(20px) translateX(5px); }
}

.hero-title {
    font-size: 4rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-primary);
    position: relative;
    z-index: 1;
    background: linear-gradient(45deg, var(--accent-blue), var(--accent-purple), var(--accent-green));
    background-size: 300% 300%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradientShift 4s ease infinite;
}

@keyframes gradientShift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.hero-subtitle {
    font-size: 1.4rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    position: relative;
    z-index: 1;
}

.hero-buttons {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    position: relative;
    z-index: 1;
}

/* Buttons with neural styling */
.btn {
    display: inline-block;
    padding: 1rem 2.5rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 1rem;
    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: left 0.5s ease;
}

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

.btn-primary {
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    color: white;
    box-shadow: 0 8px 30px rgba(0, 212, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 40px rgba(0, 212, 255, 0.4);
}

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

.btn-secondary:hover {
    background: var(--accent-blue);
    color: var(--primary-dark);
    box-shadow: 0 8px 30px rgba(0, 212, 255, 0.3);
}

.btn-sm {
    padding: 0.6rem 1.5rem;
    font-size: 0.9rem;
}

/* Features section with node styling */
.features {
    padding: 6rem 0;
    background: var(--secondary-dark);
    position: relative;
}

.section-title {
    text-align: center;
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 4rem;
    color: var(--text-primary);
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-blue), var(--accent-purple));
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--tertiary-dark);
    padding: 2.5rem;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
    transition: all 0.3s ease;
    position: relative;
    border: 1px solid rgba(0, 212, 255, 0.1);
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: conic-gradient(from 0deg, transparent, var(--accent-blue), transparent, var(--accent-purple), transparent);
    animation: rotate 4s linear infinite;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.feature-card::after {
    content: '';
    position: absolute;
    inset: 1px;
    background: var(--tertiary-dark);
    border-radius: 20px;
    z-index: 1;
}

.feature-card:hover::before {
    opacity: 0.3;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

.feature-card > * {
    position: relative;
    z-index: 2;
}

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

.feature-icon {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    background: linear-gradient(45deg, var(--accent-blue), var(--accent-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.feature-card h3 {
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

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

/* CTA section */
.cta {
    padding: 6rem 0;
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--secondary-dark) 100%);
    color: white;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        linear-gradient(45deg, transparent 30%, rgba(0, 212, 255, 0.1) 50%, transparent 70%),
        linear-gradient(-45deg, transparent 30%, rgba(108, 92, 231, 0.1) 50%, transparent 70%);
    animation: networkPulse 3s ease-in-out infinite;
}

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

.cta-content h2 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    position: relative;
    z-index: 1;
}

.cta-content p {
    font-size: 1.3rem;
    margin-bottom: 2rem;
    opacity: 0.9;
    position: relative;
    z-index: 1;
}

/* Page header */
.page-header {
    padding: 4rem 0;
    background: var(--secondary-dark);
    text-align: center;
    border-bottom: 1px solid rgba(0, 212, 255, 0.2);
}

.page-header h1 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-primary);
    background: linear-gradient(45deg, var(--accent-blue), var(--accent-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.page-header p {
    font-size: 1.3rem;
    color: var(--text-secondary);
}

/* Projects */
.projects {
    padding: 6rem 0;
    background: var(--primary-dark);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.project-card {
    background: var(--tertiary-dark);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
    transition: all 0.3s ease;
    border: 1px solid rgba(0, 212, 255, 0.1);
    display: flex;
    flex-direction: column;
}

.project-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
    border-color: var(--accent-blue);
}

.project-image {
    position: relative;
    height: 200px;
    overflow: hidden;
    background: var(--secondary-dark);
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.project-card:hover .project-image img {
    transform: scale(1.05);
}

.project-content {
    padding: 2rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.project-title-link {
    text-decoration: none;
    color: inherit;
}

.project-title-link:hover {
    text-decoration: none;
}

.project-title {
    font-size: 1.6rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
    transition: color 0.3s ease;
}

.project-title-link:hover .project-title {
    color: var(--accent-blue);
}

.project-description {
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.6;
    flex: 1;
}


.project-links {
    display: flex;
    gap: 1rem;
    margin-top: auto;
}

/* Process section */
.project-process {
    padding: 6rem 0;
    background: var(--secondary-dark);
}

.process-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 3rem;
}

.process-step {
    text-align: center;
    position: relative;
}

.step-number {
    display: inline-block;
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    color: white;
    border-radius: 50%;
    line-height: 80px;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    position: relative;
    box-shadow: 0 10px 30px rgba(0, 212, 255, 0.3);
}

.step-number::before {
    content: '';
    position: absolute;
    top: -5px;
    left: -5px;
    right: -5px;
    bottom: -5px;
    border-radius: 50%;
    border: 2px solid var(--accent-blue);
    opacity: 0;
    animation: ripple 2s infinite;
}

@keyframes ripple {
    0% {
        opacity: 1;
        transform: scale(0.8);
    }
    100% {
        opacity: 0;
        transform: scale(1.2);
    }
}

.process-step h3 {
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

/* About page */
.about-content {
    padding: 6rem 0;
    background: var(--primary-dark);
}

.about-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 4rem;
    align-items: start;
}

.about-text h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 2rem;
    color: var(--text-primary);
    background: linear-gradient(45deg, var(--accent-blue), var(--accent-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.about-text h3 {
    font-size: 1.8rem;
    font-weight: 600;
    margin: 3rem 0 1.5rem;
    color: var(--text-primary);
}

.about-text p {
    margin-bottom: 2rem;
    color: var(--text-secondary);
    line-height: 1.7;
    font-size: 1.1rem;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.skill-category {
    background: var(--tertiary-dark);
    padding: 1.5rem;
    border-radius: 15px;
    border: 1px solid rgba(0, 212, 255, 0.1);
}

.skill-category h4 {
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--accent-blue);
}

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

.skill-category li {
    padding: 0.5rem 0;
    color: var(--text-secondary);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    position: relative;
    padding-left: 1rem;
}

.skill-category li::before {
    content: '●';
    position: absolute;
    left: 0;
    color: var(--accent-blue);
}

.about-stats {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.stat-card {
    background: var(--tertiary-dark);
    padding: 2rem;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(0, 212, 255, 0.1);
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 212, 255, 0.1), transparent);
    animation: shimmer 3s infinite;
}

@keyframes shimmer {
    0% { left: -100%; }
    50%, 100% { left: 100%; }
}

.stat-number {
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--accent-blue);
    margin-bottom: 0.5rem;
}

.stat-label {
    color: var(--text-secondary);
    font-weight: 500;
}

/* Journey/Timeline */
.journey {
    padding: 6rem 0;
    background: var(--secondary-dark);
}

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

.timeline::before {
    content: '';
    position: absolute;
    left: 50px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--accent-blue), var(--accent-purple));
}

.timeline-item {
    display: grid;
    grid-template-columns: 100px 1fr;
    gap: 2rem;
    margin-bottom: 3rem;
    padding-bottom: 2rem;
    position: relative;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: 44px;
    top: 10px;
    width: 14px;
    height: 14px;
    background: var(--accent-blue);
    border-radius: 50%;
    box-shadow: 0 0 0 4px var(--secondary-dark), 0 0 20px var(--accent-blue);
}

.timeline-year {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--accent-blue);
    text-align: center;
}

.timeline-content {
    background: var(--tertiary-dark);
    padding: 1.5rem;
    border-radius: 15px;
    border: 1px solid rgba(0, 212, 255, 0.1);
}

.timeline-content h3 {
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

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

/* Contact page */
.contact-content {
    padding: 6rem 0;
    background: var(--primary-dark);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.contact-info h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 2rem;
    color: var(--text-primary);
    background: linear-gradient(45deg, var(--accent-blue), var(--accent-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.contact-info p {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 2rem;
    font-size: 1.1rem;
}

.contact-methods {
    margin: 2rem 0;
}

.contact-method {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2rem;
    padding: 1rem;
    background: var(--tertiary-dark);
    border-radius: 15px;
    border: 1px solid rgba(0, 212, 255, 0.1);
    transition: all 0.3s ease;
}

.contact-method:hover {
    border-color: var(--accent-blue);
    transform: translateX(10px);
}

.contact-icon {
    font-size: 1.5rem;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    border-radius: 50%;
    color: white;
}

.contact-details h3 {
    font-weight: 600;
    margin-bottom: 0.25rem;
    color: var(--text-primary);
}

.contact-details p {
    color: var(--text-secondary);
    margin: 0;
}

/* Sharing section */
.sharing-section {
    margin: 3rem 0 2rem 0;
}

.sharing-section h3 {
    color: var(--text-primary);
    font-weight: 600;
    margin-bottom: 1.5rem;
    font-size: 1.2rem;
}

.sharing-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.share-btn {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 1.5rem;
    background: var(--tertiary-dark);
    border-radius: 12px;
    border: 1px solid rgba(0, 212, 255, 0.1);
    text-decoration: none;
    color: var(--text-primary);
    transition: all 0.3s ease;
    font-weight: 500;
    cursor: pointer;
}

.share-btn:hover {
    border-color: var(--accent-blue);
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 212, 255, 0.2);
    color: var(--text-primary);
    text-decoration: none;
}

.linkedin-btn:hover {
    border-color: #0077b5;
    box-shadow: 0 8px 25px rgba(0, 119, 181, 0.2);
}

.instagram-btn:hover {
    border-color: #e4405f;
    box-shadow: 0 8px 25px rgba(228, 64, 95, 0.2);
}

.share-icon {
    font-size: 1.25rem;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    border-radius: 50%;
    color: white;
}

.linkedin-btn .share-icon {
    background: linear-gradient(135deg, #0077b5, #004182);
}

.instagram-btn .share-icon {
    background: linear-gradient(135deg, #e4405f, #fd1d1d, #fcb045);
}

/* Contact form */
.contact-form {
    background: var(--tertiary-dark);
    padding: 2.5rem;
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(0, 212, 255, 0.1);
}

.form-group {
    margin-bottom: 2rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-primary);
}

.form-control {
    width: 100%;
    padding: 1rem;
    border: 2px solid rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    font-size: 1rem;
    transition: all 0.3s ease;
    font-family: inherit;
    background: var(--secondary-dark);
    color: var(--text-primary);
}

.form-control:focus {
    outline: none;
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 0.2rem rgba(0, 212, 255, 0.25);
    background: var(--primary-dark);
}

.form-control.is-invalid {
    border-color: #dc3545;
}

.form-control.is-invalid:focus {
    border-color: #dc3545;
    box-shadow: 0 0 0 0.2rem rgba(220, 53, 69, 0.25);
}

.invalid-feedback {
    color: #dc3545;
    font-size: 0.875rem;
    margin-top: 0.5rem;
}

/* Flash Messages */
.flash-messages {
    margin-bottom: 2rem;
}

.alert {
    padding: 1rem 1.25rem;
    border-radius: 10px;
    margin-bottom: 1rem;
    font-weight: 500;
}

.alert-success {
    background-color: rgba(0, 184, 148, 0.1);
    color: var(--accent-green);
    border: 1px solid rgba(0, 184, 148, 0.2);
}

.alert-error {
    background-color: rgba(220, 53, 69, 0.1);
    color: #dc3545;
    border: 1px solid rgba(220, 53, 69, 0.2);
}

/* Collaboration section */
.collaboration {
    padding: 6rem 0;
    background: var(--secondary-dark);
}

.collab-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.collab-item {
    background: var(--tertiary-dark);
    padding: 2.5rem;
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(0, 212, 255, 0.1);
    transition: all 0.3s ease;
}

.collab-item:hover {
    transform: translateY(-5px);
    border-color: var(--accent-blue);
}

.collab-item h3 {
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

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

/* Footer */
.footer {
    background: var(--primary-dark);
    color: var(--text-secondary);
    text-align: center;
    padding: 3rem 0;
    border-top: 1px solid rgba(0, 212, 255, 0.2);
}

.footer p {
    margin: 0;
    opacity: 0.8;
}

/* Responsive design */

/* Small phones (320px - 480px) */
@media (max-width: 480px) {
    .container {
        padding: 0 0.75rem;
    }

    .nav-container {
        padding: 0.75rem;
        flex-direction: column;
        gap: 0.75rem;
    }

    .nav-logo a {
        font-size: 1.4rem;
    }

    .nav-links {
        flex-direction: column;
        gap: 0.5rem;
        width: 100%;
        text-align: center;
    }

    .hero {
        padding: 3rem 0;
    }

    .hero-title {
        font-size: 1.8rem;
        line-height: 1.2;
    }

    .hero-subtitle {
        font-size: 1rem;
        margin-bottom: 2rem;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: stretch;
        gap: 1rem;
    }

    .btn {
        padding: 0.875rem 1.5rem;
        font-size: 0.9rem;
    }

    .features,
    .cta,
    .projects,
    .contact-content,
    .about-content {
        padding: 3rem 0;
    }

    .section-title {
        font-size: 1.8rem;
        margin-bottom: 2rem;
    }

    .features-grid,
    .projects-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .feature-card {
        padding: 1.5rem;
    }

    .feature-icon {
        font-size: 2.5rem;
        margin-bottom: 1rem;
    }

    .project-card {
        min-width: 280px;
    }

    .project-image {
        height: 150px;
    }

    .project-content {
        padding: 1.5rem;
    }

    .project-title {
        font-size: 1.3rem;
    }

    .project-links {
        flex-direction: column;
    }

    .page-header {
        padding: 3rem 0;
    }

    .page-header h1 {
        font-size: 2rem;
    }

    .page-header p {
        font-size: 1rem;
    }

    .cta-content h2 {
        font-size: 1.8rem;
    }

    .cta-content p {
        font-size: 1rem;
    }

    .about-grid,
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .about-text h2,
    .contact-info h2 {
        font-size: 1.8rem;
    }

    .about-text h3 {
        font-size: 1.4rem;
    }

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

    .timeline::before {
        left: 15px;
    }

    .timeline-item {
        grid-template-columns: 50px 1fr;
        gap: 0.75rem;
        margin-bottom: 2rem;
    }

    .timeline-item::before {
        left: 9px;
        width: 12px;
        height: 12px;
    }

    .timeline-year {
        font-size: 1.2rem;
    }

    .contact-form {
        padding: 1.5rem;
    }

    .contact-method {
        flex-direction: column;
        text-align: center;
    }

    .sharing-buttons {
        flex-direction: column;
    }

    .share-btn {
        justify-content: center;
    }

    /* Reduce animations on small devices for performance */
    .btn::before,
    .feature-card::before {
        display: none;
    }

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

/* Mobile devices (481px - 768px) */
@media (min-width: 481px) and (max-width: 768px) {
    .container {
        padding: 0 1rem;
    }

    .nav-container {
        padding: 1rem;
        flex-direction: row;
        gap: 1rem;
    }

    .nav-links {
        gap: 1rem;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.2rem;
    }

    .hero-buttons {
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: center;
    }

    .section-title {
        font-size: 2.5rem;
    }

    .features-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .projects-grid {
        grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
        gap: 2rem;
    }

    .about-grid,
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .about-stats {
        flex-direction: row;
        justify-content: space-around;
    }

    .timeline::before {
        left: 20px;
    }

    .timeline-item {
        grid-template-columns: 60px 1fr;
        gap: 1rem;
    }

    .timeline-item::before {
        left: 14px;
    }

    .skills-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

/* Tablets (769px - 1024px) */
@media (min-width: 769px) and (max-width: 1024px) {
    .container {
        max-width: 960px;
        padding: 0 1.5rem;
    }

    .hero-title {
        font-size: 3.5rem;
    }

    .section-title {
        font-size: 2.75rem;
    }

    .features-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 1.5rem;
    }

    .projects-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 2rem;
    }

    .about-grid {
        grid-template-columns: 1.5fr 1fr;
        gap: 3rem;
    }

    .contact-grid {
        grid-template-columns: 1fr 1fr;
        gap: 3rem;
    }

    .skills-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .process-steps {
        grid-template-columns: repeat(3, 1fr);
        gap: 2rem;
    }

    .collab-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Large desktops (1025px - 1439px) */
@media (min-width: 1025px) and (max-width: 1439px) {
    .container {
        max-width: 1200px;
    }

    .projects-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Extra large desktops (1440px+) */
@media (min-width: 1440px) {
    .container {
        max-width: 1400px;
    }

    .hero-title {
        font-size: 4.5rem;
    }

    .section-title {
        font-size: 3.5rem;
    }

    .projects-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 2.5rem;
    }

    .features-grid {
        gap: 2.5rem;
    }
}

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

    /* Disable neural network animation */
    .hero::before {
        animation: none !important;
    }

    .btn::before {
        transition: none !important;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --accent-blue: #00e5ff;
        --accent-purple: #8b6ce7;
        --text-secondary: #c0c9e0;
    }

    .feature-card,
    .project-card,
    .contact-method {
        border-width: 2px;
    }
}

/* Authentication Pages */
.auth-container {
    min-height: calc(100vh - 120px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 6rem 2rem 2rem;
}

.auth-card {
    background: var(--secondary-dark);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: 16px;
    padding: 3rem;
    max-width: 480px;
    width: 100%;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.auth-card h1 {
    color: var(--accent-blue);
    font-size: 2rem;
    margin-bottom: 0.5rem;
    text-align: center;
}

.auth-subtitle {
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: 2rem;
}

.auth-form {
    margin-top: 2rem;
}

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

.form-label {
    display: block;
    color: var(--text-primary);
    font-weight: 600;
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
}

.form-control {
    width: 100%;
    padding: 0.875rem 1rem;
    background: var(--primary-dark);
    border: 1px solid rgba(0, 212, 255, 0.3);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-control:focus {
    outline: none;
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

.form-control::placeholder {
    color: var(--text-muted);
}

.form-errors {
    margin-top: 0.5rem;
}

.error-text {
    display: block;
    color: #ff4757;
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

.checkbox-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.form-checkbox {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.checkbox-label {
    color: var(--text-secondary);
    font-weight: 400;
    cursor: pointer;
}

.btn {
    padding: 0.875rem 2rem;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
    text-align: center;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 212, 255, 0.3);
}

.btn-secondary {
    background: var(--tertiary-dark);
    color: var(--text-primary);
    border: 1px solid rgba(0, 212, 255, 0.3);
}

.btn-secondary:hover {
    border-color: var(--accent-blue);
    background: var(--secondary-dark);
}

.btn-full-width {
    width: 100%;
}

.auth-links {
    margin-top: 2rem;
    text-align: center;
}

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

.auth-links a {
    color: var(--accent-blue);
    text-decoration: none;
    font-weight: 600;
}

.auth-links a:hover {
    text-decoration: underline;
}

/* Flash Messages */
.flash-messages {
    position: fixed;
    top: 80px;
    right: 20px;
    z-index: 9999;
    max-width: 400px;
}

.alert {
    padding: 1rem 1.5rem;
    border-radius: 8px;
    margin-bottom: 1rem;
    animation: slideIn 0.3s ease;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.alert-success {
    background: rgba(0, 184, 148, 0.2);
    border: 1px solid var(--accent-green);
    color: #00e3a9;
}

.alert-danger {
    background: rgba(255, 71, 87, 0.2);
    border: 1px solid #ff4757;
    color: #ff6b7a;
}

.alert-warning {
    background: rgba(255, 168, 0, 0.2);
    border: 1px solid #ffa800;
    color: #ffc107;
}

.alert-info {
    background: rgba(0, 212, 255, 0.2);
    border: 1px solid var(--accent-blue);
    color: var(--accent-blue);
}

/* Profile Page */
.profile-container {
    min-height: calc(100vh - 120px);
    padding: 6rem 2rem 2rem;
    max-width: 800px;
    margin: 0 auto;
}

.profile-card {
    background: var(--secondary-dark);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: 16px;
    padding: 3rem;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.profile-card h1 {
    color: var(--accent-blue);
    font-size: 2rem;
    margin-bottom: 2rem;
    text-align: center;
}

.profile-info {
    margin-bottom: 2rem;
}

.profile-field {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    border-bottom: 1px solid rgba(0, 212, 255, 0.1);
}

.profile-field:last-child {
    border-bottom: none;
}

.profile-field label {
    color: var(--text-secondary);
    font-weight: 600;
    min-width: 150px;
}

.profile-field span {
    color: var(--text-primary);
}

.badge {
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-size: 0.875rem;
    font-weight: 600;
}

.badge-success {
    background: rgba(0, 184, 148, 0.2);
    color: var(--accent-green);
    border: 1px solid var(--accent-green);
}

.badge-danger {
    background: rgba(255, 71, 87, 0.2);
    color: #ff4757;
    border: 1px solid #ff4757;
}

.badge-admin {
    background: rgba(108, 92, 231, 0.2);
    color: var(--accent-purple);
    border: 1px solid var(--accent-purple);
}

.profile-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-top: 2rem;
}

/* Admin Panel Styles */
.admin-container {
    min-height: calc(100vh - 120px);
    padding: 6rem 2rem 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

.admin-header {
    margin-bottom: 3rem;
    text-align: center;
}

.admin-header h1 {
    color: var(--accent-blue);
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.admin-subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 1rem;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.stat-card {
    background: var(--secondary-dark);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: 12px;
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: all 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.stat-card.pending {
    border-color: rgba(255, 168, 0, 0.3);
}

.stat-card.approved {
    border-color: rgba(0, 184, 148, 0.3);
}

.stat-card.admin {
    border-color: rgba(108, 92, 231, 0.3);
}

.stat-icon {
    font-size: 2.5rem;
    opacity: 0.8;
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent-blue);
}

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

.admin-section {
    background: var(--secondary-dark);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: 16px;
    padding: 2rem;
    margin-bottom: 2rem;
}

.admin-section h2 {
    color: var(--accent-blue);
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.section-note {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
    padding: 0.75rem 1rem;
    background: rgba(0, 212, 255, 0.05);
    border-left: 3px solid var(--accent-blue);
    border-radius: 4px;
}

.users-table {
    overflow-x: auto;
}

.users-table table {
    width: 100%;
    border-collapse: collapse;
}

.users-table thead {
    background: var(--tertiary-dark);
}

.users-table th {
    padding: 1rem;
    text-align: left;
    color: var(--accent-blue);
    font-weight: 600;
    border-bottom: 2px solid rgba(0, 212, 255, 0.3);
}

.users-table td {
    padding: 1rem;
    color: var(--text-primary);
    border-bottom: 1px solid rgba(0, 212, 255, 0.1);
}

.users-table tbody tr {
    transition: background 0.2s ease;
}

.users-table tbody tr:hover {
    background: rgba(0, 212, 255, 0.05);
}

.users-table tbody tr.inactive-row {
    opacity: 0.6;
}

.users-table .actions {
    white-space: nowrap;
}

.users-table .actions a {
    margin-right: 0.5rem;
}

.btn-small {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn-approve {
    background: linear-gradient(135deg, var(--accent-green), #00e3a9);
    color: white;
}

.btn-approve:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 184, 148, 0.3);
}

.btn-reject {
    background: linear-gradient(135deg, #ff4757, #ff6b7a);
    color: white;
}

.btn-reject:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(255, 71, 87, 0.3);
}

.btn-delete {
    background: linear-gradient(135deg, #c0392b, #e74c3c);
    color: white;
}

.btn-delete:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(192, 57, 43, 0.4);
    background: linear-gradient(135deg, #a93226, #c0392b);
}

.btn-warning {
    background: rgba(255, 168, 0, 0.2);
    color: #ffc107;
    border: 1px solid #ffa800;
}

.btn-warning:hover {
    background: rgba(255, 168, 0, 0.3);
    border-color: #ffc107;
}

.badge-user {
    background: rgba(0, 212, 255, 0.2);
    color: var(--accent-blue);
    border: 1px solid var(--accent-blue);
}

.badge-warning {
    background: rgba(255, 168, 0, 0.2);
    color: #ffc107;
    border: 1px solid #ffa800;
}

.empty-state {
    text-align: center;
    padding: 3rem;
}

.empty-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.empty-state h3 {
    color: var(--accent-blue);
    margin-bottom: 0.5rem;
}

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

/* Responsive adjustments for auth */
@media (max-width: 768px) {
    .auth-card {
        padding: 2rem;
    }

    .flash-messages {
        left: 20px;
        right: 20px;
        max-width: none;
    }

    .profile-field {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }

    .profile-field label {
        min-width: auto;
    }

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

    .admin-container {
        padding: 6rem 1rem 2rem;
    }

    .users-table {
        font-size: 0.875rem;
    }

    .users-table th,
    .users-table td {
        padding: 0.75rem 0.5rem;
    }

    .btn-small {
        padding: 0.4rem 0.8rem;
        font-size: 0.8rem;
    }
}

/* Print styles */
@media print {
    .navbar,
    .hero-buttons,
    .cta,
    .contact-form,
    .sharing-section,
    .flash-messages {
        display: none;
    }

    body {
        background: white;
        color: black;
    }

    .container {
        max-width: 100%;
    }
}