:root {
    --bg: #0a0a0f;
    --bg-secondary: #12121a;
    --primary: #00ff88;
    --secondary: #00aaff;
    --accent: #ff006e;
    --card: rgba(15, 15, 25, 0.8);
    --text: #ffffff;
    --text-muted: #a0a0a0;
    --border: rgba(0, 255, 136, 0.2);
}

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

html { scroll-behavior: smooth; }

body {
    font-family: 'Space Grotesk', sans-serif;
    background: var(--bg);
    color: var(--text);
    overflow-x: hidden;
}

.navbar {
    position: sticky;
    top: 0; left: 0; right: 0;
    padding: 15px 5%;
    background: rgba(10, 10, 15, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.navbar .logo {
    display: flex; align-items: center; gap: 10px;
    font-family: 'Orbitron', sans-serif;
    font-size: 1.5rem;
    color: var(--primary);
    text-decoration: none;
    letter-spacing: 2px;
}

.navbar .logo i {
    font-size: 1.8rem;
    animation: pulse 2s infinite;
}

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

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

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-family: 'Orbitron', sans-serif;
    font-size: 0.875rem;
    letter-spacing: 1px;
    text-transform: uppercase;
    transition: color 0.3s;
    position: relative;
}

.nav-links a:hover { color: var(--primary); }

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

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

.cta-button, .btn-primary, .btn-secondary {
    display: inline-block;
    padding: 10px 25px;
    font-family: 'Orbitron', sans-serif;
    font-size: 0.875rem;
    letter-spacing: 1px;
    text-decoration: none;
    text-transform: uppercase;
    border-radius: 4px;
    transition: all 0.3s;
}

.btn-primary {
    background: var(--primary);
    color: #000;
    border: 2px solid var(--primary);
    box-shadow: 0 4px 15px rgba(0, 255, 136, 0.4);
}

.btn-primary:hover {
    background: transparent;
    color: var(--primary);
    box-shadow: 0 4px 20px rgba(0, 255, 136, 0.5);
}

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

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

/* Hero Section */
.hero {
    min-height: 100vh;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px 5%;
}

.hero-bg {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: 
        radial-gradient(ellipse at 30% 20%, rgba(0, 255, 136, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 70% 80%, rgba(0, 150, 255, 0.15) 0%, transparent 50%),
        var(--bg);
    z-index: 0;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' style='fill:%2300ff88;opacity:0.3'%3E%3Cpath d='M30 0L30 60M0 30L60 30'%3E%3C/path%3E%3C/svg%3E");
    pointer-events: none;
    z-index: 0;
}

.hero .hero-content {
    position: relative;
    z-index: 1;
    max-width: 900px;
    text-align: center;
    padding: 50px 20px;
}

.hero-badge {
    display: inline-block;
    padding: 8px 20px;
    background: var(--primary);
    color: var(--bg);
    font-family: 'Orbitron', sans-serif;
    font-size: 0.75rem;
    letter-spacing: 3px;
    text-transform: uppercase;
    margin-bottom: 40px;
    animation: float 3s ease-in-out infinite;
}

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

.hero-title {
    font-family: 'Orbitron', sans-serif;
    font-size: 4rem;
    font-weight: 700;
    letter-spacing: 4px;
    margin-bottom: 20px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: typeIn 1s ease;
}

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

.typed-text { color: var(--accent); }

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-muted);
    margin-bottom: 50px;
    animation: fadeInUp 0.8s ease 0.3s both;
}

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

.hero-cta {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease 0.5s both;
}

/* Teach Section */
.teach-section { padding: 100px 5%; background: var(--bg-secondary); }

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

.section-header h2 {
    font-family: 'Orbitron', sans-serif;
    font-size: 3rem;
    letter-spacing: 4px;
    margin-bottom: 15px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-header p {
    color: var(--text-muted);
    font-size: 1.125rem;
    max-width: 600px;
    margin: 0 auto;
}

.teach-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.teach-card {
    background: var(--card);
    padding: 40px 30px;
    border-radius: 8px;
    border: 1px solid var(--border);
    transition: all 0.4s;
    position: relative;
    overflow: hidden;
}

.teach-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    transform: scaleX(0);
    transition: transform 0.3s;
}

.teach-card:hover::before { transform: scaleX(1); }

.teach-card:hover {
    transform: translateY(-10px) perspective(500px) rotateX(5deg);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

.card-icon {
    width: 60px; height: 60px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    margin: 0 auto 30px;
    font-size: 1.5rem;
    transition: transform 0.3s;
}

.teach-card:hover .card-icon { transform: scale(1.1); }

.teach-card h3 {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.5rem;
    letter-spacing: 2px;
    margin-bottom: 10px;
    text-align: center;
}

.teach-card p {
    color: var(--text-muted);
    font-size: 0.9375rem;
    text-align: center;
    line-height: 1.6;
}

/* Why Section */
.why-section {
    padding: 100px 5%;
    background: var(--bg);
}

.why-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.why-card {
    text-align: center;
    padding: 30px 20px;
}

.stat-number {
    font-family: 'Orbitron', sans-serif;
    font-size: 3rem;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 10px;
    display: block;
}

.stat-label {
    color: var(--text-muted);
    font-size: 0.875rem;
    letter-spacing: 1px;
    text-transform: uppercase;
}

/* Resources Section */
.resources-section {
    padding: 100px 5%;
    background: var(--bg-secondary);
}

.resources-section .section-header {
    margin-bottom: 80px;
}

/* Tabs CSS */
.resources-tabs {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.tab-btn {
    padding: 10px 25px;
    background: transparent;
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: 4px;
    font-family: 'Orbitron', sans-serif;
    font-size: 0.875rem;
    cursor: pointer;
    transition: all 0.3s;
    text-transform: uppercase;
}

.tab-btn.active {
    background: var(--primary);
    color: #000;
    border-color: var(--primary);
}

.tab-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.tab-btn.active:hover {
    color: #000;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: contents;
}

.resources-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.resource-card {
    background: var(--card);
    padding: 30px 25px;
    border-radius: 8px;
    border: 1px solid var(--border);
    transition: all 0.3s;
    position: relative;
}

.resource-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: all 0.3s;
    transform: translateX(-50%);
}

.resource-card:hover::after {
    width: 50%;
}

.resource-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.3);
}

.resource-icon {
    width: 50px; height: 50px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    margin-bottom: 20px;
    font-size: 1.25rem;
}

.resource-card h3 {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.25rem;
    letter-spacing: 1px;
    margin-bottom: 10px;
}

.resource-card ul {
    list-style: none;
    margin-top: 15px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.resource-card ul li {
    position: relative;
    padding-left: 20px;
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.5;
    transition: color 0.3s;
}

.resource-card ul li::before {
    content: '>';
    position: absolute;
    left: 0;
    color: var(--primary);
    font-family: 'Orbitron', monospace;
    font-size: 0.8rem;
    font-weight: 700;
}

.resource-card ul li a {
    color: var(--text);
    text-decoration: none;
    transition: all 0.3s ease;
    display: inline-block;
}

.resource-card ul li a:hover {
    color: var(--primary);
    transform: translateX(4px);
    text-decoration: underline;
}

.course-catalog-cta {
    text-align: center;
    margin-top: 50px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 15px;
    width: 100%;
}

.course-catalog-cta .btn-primary {
    margin: 0 auto;
    font-weight: 700;
}

.course-catalog-cta p {
    color: var(--text-muted);
    font-size: 0.95rem;
    max-width: 600px;
    text-align: center;
    margin: 0 auto;
}

.resources-cta {
    display: block;
    text-align: center;
    margin-top: 40px;
    padding: 15px 30px;
    background: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
    border-radius: 4px;
    text-decoration: none;
    font-family: 'Orbitron', sans-serif;
    font-size: 0.875rem;
    letter-spacing: 1px;
    transition: all 0.3s;
    margin: 0 auto;
}

.resources-cta:hover {
    background: var(--primary);
    color: var(--bg);
}

/* Contact Section */
.contact-section {
    padding: 100px 5%;
    background: var(--bg);
    border-top: 1px solid var(--border);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    max-width: 1200px;
    margin: 0 auto;
}

.contact-info h2 {
    font-family: 'Orbitron', sans-serif;
    font-size: 3rem;
    letter-spacing: 4px;
    margin-bottom: 20px;
    color: var(--primary);
}

.contact-info p {
    color: var(--text-muted);
    margin-bottom: 40px;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 25px;
    margin-top: 30px;
}

.detail-item {
    display: flex;
    align-items: center;
    gap: 15px;
    color: var(--text);
    font-size: 0.9375rem;
    transition: color 0.3s;
}

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

.detail-item i {
    color: var(--primary);
    font-size: 1.25rem;
}

.contact-form {
    background: var(--card);
    padding: 40px;
    border-radius: 8px;
    border: 1px solid var(--border);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
}

.form-group {
    margin-bottom: 20px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 15px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--text);
    font-family: 'Space Grotesk', sans-serif;
    font-size: 0.9375rem;
    transition: border-color 0.3s;
    outline: none;
}

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

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
}

.submit-btn {
    width: 100%;
    padding: 15px;
    background: var(--primary);
    color: var(--bg);
    border: none;
    border-radius: 4px;
    font-family: 'Orbitron', sans-serif;
    font-size: 1rem;
    letter-spacing: 1px;
    text-transform: uppercase;
    cursor: pointer;
    transition: background 0.3s;
    box-shadow: 0 4px 15px rgba(0, 255, 136, 0.4);
}

.submit-btn:hover {
    background: var(--secondary);
    box-shadow: 0 4px 20px rgba(0, 150, 255, 0.4);
}

/* Footer */
footer {
    padding: 60px 5%;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template: 1fr / repeat(2, 1fr);
    gap: 40px;
    align-items: center;
}

.logo-footer {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: 'Orbitron', sans-serif;
    font-size: 1.5rem;
    color: var(--primary);
    text-decoration: none;
}

.logo-footer i {
    font-size: 1.8rem;
    animation: pulse 2s infinite;
}

.titlebar {
    display: flex;
    align-items: center;
    height: 40px;
    background: var(--primary);
    border-bottom: 1px solid var(--border);
    font-family: 'Orbitron', sans-serif;
    font-size: 0.75rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    padding: 0 20px;
}

.titlebar-left {
    display: flex;
    align-items: center;
    gap: 8px;
}

.titlebar-left i {
    font-size: 1.2rem;
    color: var(--bg);
}

.titlebar-left span {
    color: var(--bg);
    font-weight: 700;
}

.titlebar-right {
    margin-left: auto;
    display: flex;
    gap: 4px;
}

.titlebar-btn {
    width: 20px;
    height: 20px;
    font-size: 1rem;
    line-height: 20px;
    color: var(--bg);
    margin: 0 2px;
    text-decoration: none;
    display: inline-block;
    text-align: center;
}

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

.social-links {
    display: flex;
    justify-content: center;
    gap: 20px;
}

.social-links a {
    color: var(--text-muted);
    font-size: 1.25rem;
    transition: color 0.3s;
}

.social-links a:hover {
    color: var(--primary);
}

/* Scroll Indicator */
.scroll-indicator {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    color: var(--text-muted);
    font-size: 0.75rem;
    letter-spacing: 1px;
    text-transform: uppercase;
    animation: bounce 2s infinite;
}

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

/* Particle Canvas */
#particleCanvas {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    pointer-events: none;
    z-index: 0;
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Responsive */
@media (max-width: 768px) {
    .navbar .nav-links {
        display: none;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .why-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .social-links {
        justify-content: center;
    }
}

/* ==========================================================================
   PROJECTS DIRECTORY & DETAILED TUTORIAL ARTICLE STYLES
   ========================================================================== */

/* Breadcrumb Navigation */
.breadcrumb-nav {
    padding: 15px 5%;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.85rem;
    font-family: 'Space Grotesk', sans-serif;
}

.breadcrumb-nav a {
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.3s;
}

.breadcrumb-nav a:hover {
    color: var(--primary);
}

.breadcrumb-nav span.separator {
    color: var(--border);
}

.breadcrumb-nav span.current {
    color: var(--primary);
    font-weight: 500;
}

/* Project Article Wrapper */
.project-wrapper {
    max-width: 1050px;
    margin: 0 auto;
    padding: 50px 20px 100px;
    position: relative;
    z-index: 1;
}

.project-hero {
    margin-bottom: 50px;
    text-align: left;
}

.project-badge-row {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

.badge-tag {
    display: inline-block;
    padding: 5px 14px;
    border-radius: 4px;
    font-family: 'Orbitron', sans-serif;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.badge-tag.primary {
    background: rgba(0, 255, 136, 0.15);
    color: var(--primary);
    border: 1px solid var(--primary);
}

.badge-tag.secondary {
    background: rgba(0, 170, 255, 0.15);
    color: var(--secondary);
    border: 1px solid var(--secondary);
}

.badge-tag.accent {
    background: rgba(255, 0, 110, 0.15);
    color: var(--accent);
    border: 1px solid var(--accent);
}

.project-hero h1 {
    font-family: 'Orbitron', sans-serif;
    font-size: 2.8rem;
    line-height: 1.2;
    margin-bottom: 20px;
    color: #ffffff;
    letter-spacing: 1px;
}

.project-hero p.lead {
    color: var(--text-muted);
    font-size: 1.15rem;
    line-height: 1.7;
    margin-bottom: 30px;
}

.project-meta-bar {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 15px;
    padding: 20px;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 8px;
    margin-bottom: 40px;
}

.meta-item {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.meta-label {
    font-family: 'Orbitron', sans-serif;
    font-size: 0.75rem;
    color: var(--text-muted);
    letter-spacing: 1px;
    text-transform: uppercase;
}

.meta-value {
    color: var(--primary);
    font-weight: 600;
    font-size: 0.95rem;
}

/* Quick Jump TOC */
.project-toc {
    background: rgba(18, 18, 26, 0.7);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 25px;
    margin-bottom: 50px;
}

.project-toc h3 {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.1rem;
    color: var(--primary);
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.toc-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 10px 20px;
    list-style: none;
}

.toc-grid li a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.9rem;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.toc-grid li a:hover {
    color: var(--primary);
    transform: translateX(4px);
}

/* Project Content Sections */
.project-section {
    margin-bottom: 60px;
    scroll-margin-top: 80px;
}

.project-section h2 {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.8rem;
    letter-spacing: 1px;
    color: #ffffff;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 12px;
}

.project-section h2 i {
    color: var(--primary);
    font-size: 1.4rem;
}

.project-section p {
    color: #d1d5db;
    font-size: 1rem;
    line-height: 1.75;
    margin-bottom: 20px;
}

/* Aim Callout Box */
.aim-card {
    background: linear-gradient(135deg, rgba(0, 255, 136, 0.08), rgba(0, 170, 255, 0.08));
    border-left: 4px solid var(--primary);
    padding: 25px 30px;
    border-radius: 0 8px 8px 0;
    margin-bottom: 30px;
}

.aim-card h4 {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.1rem;
    color: var(--primary);
    margin-bottom: 10px;
}

.aim-card p {
    margin-bottom: 0;
    color: #ffffff;
    font-size: 1.05rem;
}

/* Outcomes Grid */
.outcomes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin: 25px 0;
}

.outcome-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 25px;
    transition: transform 0.3s, border-color 0.3s;
}

.outcome-card:hover {
    transform: translateY(-4px);
    border-color: var(--primary);
}

.outcome-card .outcome-icon {
    font-size: 1.5rem;
    color: var(--secondary);
    margin-bottom: 15px;
}

.outcome-card h3 {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.1rem;
    color: #ffffff;
    margin-bottom: 10px;
}

.outcome-card p {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 0;
}

/* Technologies Learned Pills */
.tech-pills {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin: 20px 0 30px;
}

.tech-pill {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    padding: 10px 18px;
    border-radius: 6px;
    font-size: 0.9rem;
    color: #ffffff;
    display: flex;
    align-items: center;
    gap: 10px;
}

.tech-pill i {
    color: var(--primary);
}

.tech-pill strong {
    color: var(--primary);
}

/* Tables (Components & Pinouts) */
.table-responsive {
    width: 100%;
    overflow-x: auto;
    margin: 25px 0;
    border-radius: 8px;
    border: 1px solid var(--border);
}

.styled-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--card);
    text-align: left;
    font-size: 0.92rem;
}

.styled-table thead th {
    background: rgba(0, 255, 136, 0.1);
    color: var(--primary);
    font-family: 'Orbitron', sans-serif;
    font-size: 0.85rem;
    letter-spacing: 1px;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border);
    text-transform: uppercase;
}

.styled-table tbody tr {
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    transition: background 0.2s;
}

.styled-table tbody tr:last-child {
    border-bottom: none;
}

.styled-table tbody tr:hover {
    background: rgba(0, 255, 136, 0.04);
}

.styled-table td {
    padding: 15px 20px;
    color: #e2e8f0;
    vertical-align: middle;
}

.styled-table td.qty-col {
    font-family: 'Orbitron', monospace;
    font-weight: 700;
    color: var(--secondary);
}

.pin-badge {
    background: rgba(0, 170, 255, 0.15);
    color: var(--secondary);
    padding: 3px 8px;
    border-radius: 4px;
    font-family: 'Space Grotesk', monospace;
    font-weight: 600;
}

/* Step by Step Tutorial Cards */
.steps-container {
    display: flex;
    flex-direction: column;
    gap: 25px;
    margin: 30px 0;
}

.step-card {
    display: flex;
    gap: 20px;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 25px;
}

.step-number {
    flex-shrink: 0;
    width: 45px;
    height: 45px;
    background: var(--primary);
    color: #000000;
    font-family: 'Orbitron', sans-serif;
    font-weight: 700;
    font-size: 1.2rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.step-content {
    flex-grow: 1;
}

.step-content h3 {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.2rem;
    color: #ffffff;
    margin-bottom: 10px;
}

.step-content p {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 12px;
}

.step-content ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.step-content ul li {
    position: relative;
    padding-left: 18px;
    color: #e2e8f0;
    font-size: 0.9rem;
}

.step-content ul li::before {
    content: '-';
    position: absolute;
    left: 0;
    color: var(--primary);
    font-weight: bold;
}

/* Code Container with Copy */
.code-container {
    background: #0d1117;
    border: 1px solid var(--border);
    border-radius: 8px;
    overflow: hidden;
    margin: 30px 0;
}

.code-header {
    background: #161b22;
    padding: 12px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.code-title {
    font-family: 'Orbitron', monospace;
    font-size: 0.85rem;
    color: var(--primary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.copy-btn {
    background: rgba(0, 255, 136, 0.1);
    color: var(--primary);
    border: 1px solid var(--primary);
    padding: 5px 12px;
    border-radius: 4px;
    font-family: 'Orbitron', sans-serif;
    font-size: 0.75rem;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 6px;
}

.copy-btn:hover {
    background: var(--primary);
    color: #000000;
}

.code-block {
    padding: 20px;
    margin: 0;
    overflow-x: auto;
    font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
    font-size: 0.9rem;
    line-height: 1.6;
    color: #e6edf3;
}

/* Working Principle / Math Box */
.formula-box {
    background: rgba(0, 170, 255, 0.08);
    border: 1px solid rgba(0, 170, 255, 0.3);
    border-radius: 8px;
    padding: 20px;
    text-align: center;
    margin: 20px 0;
}

.formula-box .formula {
    font-family: 'Orbitron', monospace;
    font-size: 1.3rem;
    color: var(--secondary);
    margin-bottom: 8px;
}

.formula-box p {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-bottom: 0;
}

/* Troubleshooting Table / List */
.troubleshoot-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin: 25px 0;
}

.troubleshoot-card {
    background: var(--card);
    border: 1px solid rgba(255, 0, 110, 0.3);
    border-radius: 8px;
    padding: 20px;
}

.troubleshoot-card h4 {
    font-family: 'Orbitron', sans-serif;
    font-size: 1rem;
    color: var(--accent);
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.troubleshoot-card p {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 0;
}

/* Project Navigation Footer */
.project-footer-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
    margin-top: 60px;
    padding-top: 30px;
    border-top: 1px solid var(--border);
}

/* Catalog Page Grid & Cards */
.catalog-header {
    text-align: center;
    padding: 120px 5% 40px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
}

.catalog-header h1 {
    font-family: 'Orbitron', sans-serif;
    font-size: 3rem;
    color: #ffffff;
    margin-bottom: 15px;
    letter-spacing: 2px;
}

.catalog-header p {
    color: var(--text-muted);
    font-size: 1.15rem;
    max-width: 700px;
    margin: 0 auto 30px;
}

.filter-bar {
    display: flex;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
    margin-top: 25px;
}

.filter-btn {
    padding: 8px 20px;
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-muted);
    border-radius: 4px;
    font-family: 'Orbitron', sans-serif;
    font-size: 0.8rem;
    cursor: pointer;
    transition: all 0.3s;
    text-transform: uppercase;
}

.filter-btn:hover, .filter-btn.active {
    background: var(--primary);
    color: #000000;
    border-color: var(--primary);
}

.catalog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 30px;
    max-width: 1200px;
    margin: 50px auto 100px;
    padding: 0 20px;
}

.project-card-item {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 8px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: all 0.3s;
    position: relative;
}

.project-card-item:hover {
    transform: translateY(-8px);
    border-color: var(--primary);
    box-shadow: 0 15px 30px rgba(0, 255, 136, 0.15);
}

.project-card-top {
    padding: 20px 20px 10px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.project-card-body {
    padding: 10px 20px 20px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.project-card-body h3 {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.25rem;
    color: #ffffff;
    margin-bottom: 12px;
    line-height: 1.4;
}

.project-card-body p {
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.6;
    margin-bottom: 20px;
    flex-grow: 1;
}

.project-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 15px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.project-card-footer span {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.btn-read-project {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: 'Orbitron', sans-serif;
    font-size: 0.8rem;
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
    transition: all 0.2s;
}

.btn-read-project:hover {
    color: #ffffff;
    transform: translateX(4px);
}

/* ==========================================================================
   3D INTERACTIVE WORKBENCH STYLES
   ========================================================================== */
.workbench-3d-wrapper {
    background: #0d1117;
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
    margin: 35px 0 50px;
    box-shadow: 0 20px 45px rgba(0, 0, 0, 0.6);
    position: relative;
}

.workbench-toolbar {
    background: #161b22;
    padding: 12px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.workbench-title {
    font-family: 'Orbitron', sans-serif;
    font-size: 0.9rem;
    color: var(--primary);
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
}

.workbench-controls-group {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.btn-workbench {
    background: rgba(18, 24, 38, 0.9);
    border: 1px solid var(--border);
    color: #ffffff;
    padding: 6px 14px;
    border-radius: 4px;
    font-family: 'Orbitron', sans-serif;
    font-size: 0.75rem;
    cursor: pointer;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    text-transform: uppercase;
}

.btn-workbench:hover, .btn-workbench.active {
    background: var(--primary);
    color: #000000;
    border-color: var(--primary);
}

.workbench-viewport-container {
    width: 100%;
    height: 520px;
    position: relative;
    background: radial-gradient(circle at 50% 50%, #151d2a 0%, #0a0d14 100%);
    cursor: grab;
}

.workbench-viewport-container:active {
    cursor: grabbing;
}

.workbench-hud-overlay {
    position: absolute;
    top: 15px;
    left: 20px;
    pointer-events: none;
    z-index: 10;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.hud-pill {
    background: rgba(10, 15, 25, 0.85);
    border: 1px solid var(--border);
    padding: 4px 10px;
    border-radius: 4px;
    font-family: 'Space Grotesk', monospace;
    font-size: 0.75rem;
    color: var(--text-muted);
    backdrop-filter: blur(5px);
}

.hud-pill strong {
    color: var(--primary);
}

#workbench-hover-tag {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(0, 255, 136, 0.9);
    color: #000000;
    font-family: 'Orbitron', sans-serif;
    font-size: 0.8rem;
    font-weight: 700;
    padding: 6px 16px;
    border-radius: 20px;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.2s ease;
    z-index: 10;
    box-shadow: 0 4px 15px rgba(0, 255, 136, 0.4);
}

/* Part Info Modal / Drawer */
.part-info-modal {
    position: absolute;
    bottom: 20px;
    right: 20px;
    width: 320px;
    background: rgba(15, 23, 42, 0.95);
    border: 1px solid var(--primary);
    border-radius: 8px;
    padding: 18px;
    z-index: 20;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(10px);
}

.part-info-modal h4 {
    font-family: 'Orbitron', sans-serif;
    font-size: 0.95rem;
    color: var(--primary);
    margin-bottom: 8px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.part-info-modal p {
    font-size: 0.85rem;
    color: #cbd5e1;
    line-height: 1.5;
    margin-bottom: 0;
}

.close-modal-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 0.9rem;
}
.close-modal-btn:hover {
    color: #ffffff;
}

/* ==========================================================================
   VIDEO MASTERCLASS & AUTHENTICATION PORTAL STYLES
   ========================================================================== */
.video-player-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 10px;
    overflow: hidden;
    margin: 30px 0;
}

.video-card-header {
    padding: 20px;
    background: rgba(18, 24, 38, 0.8);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.video-meta-tag {
    font-family: 'Orbitron', sans-serif;
    font-size: 0.75rem;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 6px;
}

.video-card-header h3 {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.25rem;
    color: #ffffff;
    margin-bottom: 6px;
}

.video-instructor {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 0;
}

.video-aspect-wrapper {
    position: relative;
    padding-bottom: 56.25%; /* 16:9 ratio */
    height: 0;
    overflow: hidden;
    background: #000000;
}

.video-aspect-wrapper iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.video-card-footer {
    padding: 12px 20px;
    background: #111827;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* Locked Video Card */
.video-locked-card {
    background: linear-gradient(135deg, rgba(18, 24, 38, 0.9), rgba(10, 15, 25, 0.95));
    border: 1px solid rgba(0, 255, 136, 0.3);
    border-radius: 10px;
    padding: 40px 25px;
    text-align: center;
    margin: 30px 0;
}

.locked-icon-shield {
    width: 65px;
    height: 65px;
    background: rgba(0, 255, 136, 0.1);
    border: 2px solid var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 1.6rem;
    color: var(--primary);
}

.video-locked-card h3 {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.4rem;
    color: #ffffff;
    margin-bottom: 10px;
}

.video-locked-card p {
    color: var(--text-muted);
    max-width: 550px;
    margin: 0 auto 25px;
    font-size: 0.95rem;
}

.locked-video-dummy-preview {
    max-width: 600px;
    height: 220px;
    background: #0b0f19;
    border: 1px dashed var(--border);
    border-radius: 8px;
    margin: 0 auto 25px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.play-overlay-locked {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    color: var(--text-muted);
    font-family: 'Orbitron', sans-serif;
    font-size: 0.85rem;
}

.play-overlay-locked i {
    font-size: 2.2rem;
    color: rgba(255, 255, 255, 0.2);
}

/* Nav Session Badges */
.user-session-badge {
    display: flex;
    align-items: center;
    gap: 12px;
}

.user-session-badge .user-name {
    color: var(--primary);
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 600;
    font-size: 0.85rem;
}

.btn-logout-pill, .btn-admin-pill {
    padding: 6px 12px;
    border-radius: 4px;
    font-family: 'Orbitron', sans-serif;
    font-size: 0.75rem;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

.btn-logout-pill {
    background: rgba(255, 0, 110, 0.15);
    border: 1px solid var(--accent);
    color: var(--accent);
}
.btn-logout-pill:hover {
    background: var(--accent);
    color: #ffffff;
}

.btn-admin-pill {
    background: rgba(0, 170, 255, 0.15);
    border: 1px solid var(--secondary);
    color: var(--secondary);
}
.btn-admin-pill:hover {
    background: var(--secondary);
    color: #ffffff;
}

/* Login Page UI */
.login-page-container {
    min-height: 80vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 60px 20px;
}

.login-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 12px;
    max-width: 480px;
    width: 100%;
    padding: 35px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
}

.login-header {
    text-align: center;
    margin-bottom: 25px;
}

.auth-icon-badge {
    width: 60px;
    height: 60px;
    background: rgba(0, 255, 136, 0.15);
    border: 2px solid var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--primary);
    margin: 0 auto 15px;
}

.login-header h2 {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.5rem;
    color: #ffffff;
    margin-bottom: 8px;
}

.login-header p {
    color: var(--text-muted);
    font-size: 0.85rem;
}

.demo-creds-box {
    background: rgba(0, 170, 255, 0.08);
    border: 1px solid rgba(0, 170, 255, 0.25);
    border-radius: 6px;
    padding: 12px 15px;
    margin-bottom: 20px;
}

.demo-creds-box h4 {
    font-family: 'Orbitron', sans-serif;
    font-size: 0.8rem;
    color: var(--secondary);
    margin-bottom: 8px;
}

.creds-grid {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.cred-chip {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(0, 0, 0, 0.3);
    padding: 6px 10px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.8rem;
    transition: background 0.2s;
}

.cred-chip:hover {
    background: rgba(0, 170, 255, 0.2);
}

.cred-role {
    color: var(--text-muted);
}

.cred-chip code {
    color: var(--primary);
    font-family: monospace;
}

.auth-form .form-group {
    margin-bottom: 18px;
}

.auth-form label {
    display: block;
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 6px;
}

.auth-error-banner {
    background: rgba(255, 0, 110, 0.15);
    border: 1px solid var(--accent);
    color: var(--accent);
    padding: 10px 14px;
    border-radius: 4px;
    font-size: 0.85rem;
    margin-bottom: 15px;
    text-align: center;
}

.auth-card-footer {
    margin-top: 25px;
    text-align: center;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.auth-card-footer a {
    color: var(--primary);
    text-decoration: none;
}
.auth-card-footer a:hover {
    text-decoration: underline;
}