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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 40px 0;
    text-align: center;
}

header h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
}

header .tagline {
    font-size: 1.2rem;
    opacity: 0.9;
}

/* Navigation */
nav {
    background-color: #fff;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

nav .container {
    display: flex;
    justify-content: center;
    gap: 30px;
    padding: 15px 20px;
}

nav a {
    color: #333;
    text-decoration: none;
    padding: 8px 16px;
    border-radius: 4px;
    transition: all 0.3s ease;
    font-weight: 500;
}

nav a:hover {
    background-color: #667eea;
    color: white;
}

nav a.active {
    background-color: #667eea;
    color: white;
}

/* Main Content */
main {
    padding: 40px 20px;
    min-height: calc(100vh - 400px);
}

section {
    background-color: white;
    padding: 40px;
    margin-bottom: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

h2 {
    color: #667eea;
    margin-bottom: 20px;
    font-size: 2rem;
}

h3 {
    color: #764ba2;
    margin-top: 30px;
    margin-bottom: 15px;
    font-size: 1.5rem;
}

p {
    margin-bottom: 15px;
}

ul {
    margin-left: 30px;
    margin-bottom: 15px;
}

li {
    margin-bottom: 8px;
}

a {
    color: #667eea;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

/* Feature Grid */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 30px;
}

.feature-card {
    background-color: #f9f9f9;
    padding: 30px;
    border-radius: 8px;
    border-left: 4px solid #667eea;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.feature-card h3 {
    margin-top: 0;
    font-size: 1.3rem;
}

/* Hero Section */
.hero {
    text-align: center;
    padding: 60px 40px;
}

.hero h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.hero p {
    font-size: 1.2rem;
    max-width: 800px;
    margin: 0 auto 20px auto;
}

/* CTA Section */
.cta {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-align: center;
}

.cta h2 {
    color: white;
}

/* Content Page */
.content-page {
    max-width: 900px;
    margin: 0 auto;
}

.content-page h2 {
    margin-top: 0;
}

.content-page p strong {
    color: #764ba2;
}

.intro-large {
    font-size: 1.2rem;
    line-height: 1.8;
    color: #555;
}

/* Profile Section */
.hero-profile {
    padding: 20px 40px 40px 40px;
}

.profile-container {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 40px;
    align-items: start;
}

.profile-image {
    position: sticky;
    top: 100px;
}

.profile-image img {
    width: 100%;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
    border: 4px solid #667eea;
}

.profile-content h2 {
    margin-top: 0;
}

.profile-content .intro {
    font-size: 1.2rem;
    line-height: 1.8;
    color: #555;
    margin-bottom: 20px;
}

/* Services Section */
.services {
    padding-top: 20px;
}

/* Contact Page */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    margin-top: 30px;
}

.contact-info h3,
.newsletter-signup h3 {
    margin-top: 0;
}

/* Newsletter Form */
.signup-form {
    margin-top: 20px;
}

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

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
    color: #555;
}

.form-group input[type="text"],
.form-group input[type="email"] {
    width: 100%;
    padding: 12px;
    border: 2px solid #ddd;
    border-radius: 6px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-group input[type="text"]:focus,
.form-group input[type="email"]:focus {
    outline: none;
    border-color: #667eea;
}

.form-group label:has(input[type="checkbox"]) {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 10px;
    font-weight: normal;
}

.form-group input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.submit-btn {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    padding: 14px 32px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 6px;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

.form-note {
    margin-top: 15px;
    font-size: 0.9rem;
    color: #888;
    font-style: italic;
}

.form-message {
    margin-top: 20px;
    padding: 15px;
    border-radius: 6px;
    font-weight: 500;
}

.form-message.success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.form-message.error {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

/* Footer */
footer {
    background-color: #333;
    color: white;
    text-align: center;
    padding: 40px 20px;
    margin-top: 60px;
}

footer p {
    margin-bottom: 10px;
}

footer a {
    color: #9fa8da;
}

footer a:hover {
    color: #fff;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 28px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-decoration: none;
    border-radius: 6px;
    font-weight: 600;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
    text-decoration: none;
}

.btn-secondary {
    background: white;
    color: #667eea;
    border: 2px solid #667eea;
}

.btn-secondary:hover {
    background: #f0f2ff;
}

.btn-group {
    display: flex;
    gap: 15px;
    margin-top: 20px;
}

/* Coming Soon Badge */
.coming-soon-banner {
    background: linear-gradient(135deg, #ffd89b 0%, #19547b 100%);
    color: white;
    text-align: center;
    padding: 15px;
    margin-bottom: 30px;
    border-radius: 8px;
}

.coming-soon-banner h3 {
    margin: 0 0 8px 0;
    color: white;
    font-size: 1.3rem;
}

.coming-soon-banner p {
    margin: 0;
    opacity: 0.95;
}

/* Product Grid (3D Shop) */
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 30px;
}

.product-card {
    background: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    display: flex;
    flex-direction: column;
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 20px rgba(0,0,0,0.15);
}

.product-thumbnail {
    width: 100%;
    height: 220px;
    background-color: #f0f0f0;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    position: relative;
}

.product-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.product-thumbnail.placeholder {
    background: linear-gradient(135deg, #f5f5f5 0%, #e0e0e0 100%);
    color: #999;
    font-size: 3rem;
}

.product-3d-badge {
    position: absolute;
    top: 10px;
    right: 10px;
    background: rgba(102, 126, 234, 0.9);
    color: white;
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
}

.product-info {
    padding: 20px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.product-category {
    font-size: 0.85rem;
    color: #764ba2;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 8px;
}

.product-name {
    font-size: 1.2rem;
    font-weight: 700;
    color: #333;
    margin-bottom: 10px;
}

.product-description {
    font-size: 0.95rem;
    color: #666;
    line-height: 1.5;
    margin-bottom: 15px;
    flex-grow: 1;
}

.product-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 15px;
    border-top: 1px solid #eee;
    margin-top: auto;
}

.product-price {
    font-size: 1.3rem;
    font-weight: 700;
    color: #667eea;
}

.product-formats {
    font-size: 0.8rem;
    color: #888;
}

/* Category Filter */
.category-filter {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 30px;
}

.category-btn {
    padding: 8px 16px;
    background: white;
    border: 2px solid #ddd;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
}

.category-btn:hover,
.category-btn.active {
    background: #667eea;
    color: white;
    border-color: #667eea;
}

/* Model Viewer Component */
.model-viewer-container {
    width: 100%;
    height: 400px;
    background-color: #f5f5f5;
    border-radius: 8px;
    overflow: hidden;
    margin: 20px 0;
}

.model-viewer-placeholder,
.model-viewer-loading,
.model-viewer-error {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px;
    text-align: center;
}

.model-viewer-icon {
    color: #667eea;
    margin-bottom: 20px;
    opacity: 0.6;
}

.model-viewer-title {
    font-size: 1.3rem;
    font-weight: 600;
    color: #333;
    margin-bottom: 10px;
}

.model-viewer-description {
    font-size: 1rem;
    color: #666;
    max-width: 400px;
    line-height: 1.6;
}

.model-viewer-download {
    margin-top: 20px;
    padding: 10px 24px;
    background: #667eea;
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 600;
    transition: background 0.3s ease;
}

.model-viewer-download:hover {
    background: #5568d3;
}

.spinner {
    border: 4px solid #f3f3f3;
    border-top: 4px solid #667eea;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    animation: spin 1s linear infinite;
    margin-bottom: 20px;
}

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

.model-viewer-error {
    color: #721c24;
    background-color: #f8d7da;
}

.error-message {
    font-size: 0.9rem;
    margin-top: 10px;
}

/* Portfolio/Project Cards */
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 30px;
    margin-top: 30px;
}

.portfolio-card {
    background: white;
    border-radius: 8px;
    padding: 30px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border-top: 4px solid #667eea;
}

.portfolio-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 20px rgba(0,0,0,0.15);
}

.portfolio-card h4 {
    color: #667eea;
    font-size: 1.3rem;
    margin-bottom: 10px;
}

.portfolio-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 15px;
}

.tag {
    background: #f0f2ff;
    color: #667eea;
    padding: 4px 12px;
    border-radius: 4px;
    font-size: 0.85rem;
    font-weight: 500;
}

/* Service Cards */
.service-section {
    margin-bottom: 40px;
}

.service-section h3 {
    margin-top: 0;
    color: #667eea;
    border-bottom: 3px solid #667eea;
    padding-bottom: 10px;
}

.service-list {
    list-style: none;
    margin-left: 0;
}

.service-list li {
    padding: 10px 0 10px 30px;
    position: relative;
}

.service-list li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #667eea;
    font-weight: bold;
    font-size: 1.2rem;
}

.service-examples {
    background: #f9f9f9;
    padding: 20px;
    border-radius: 8px;
    margin-top: 15px;
    border-left: 4px solid #764ba2;
}

/* Testimonials */
.testimonial-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 30px;
}

.testimonial-card {
    background: #f9f9f9;
    padding: 30px;
    border-radius: 8px;
    border-left: 4px solid #764ba2;
    font-style: italic;
}

.testimonial-text {
    margin-bottom: 15px;
    color: #555;
    line-height: 1.7;
}

.testimonial-author {
    font-weight: 600;
    color: #764ba2;
    font-style: normal;
}

/* Utility Classes */
.text-center {
    text-align: center;
}

.mt-20 {
    margin-top: 20px;
}

.mt-30 {
    margin-top: 30px;
}

.mb-20 {
    margin-bottom: 20px;
}

.mb-30 {
    margin-bottom: 30px;
}

/* Subsection Headers */
.subsection {
    margin-top: 40px;
}

.subsection h4 {
    color: #764ba2;
    font-size: 1.2rem;
    margin-bottom: 15px;
    border-left: 4px solid #764ba2;
    padding-left: 15px;
}

/* Tech Stack / Features List */
.tech-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    margin-top: 20px;
}

.tech-item {
    background: #f0f2ff;
    padding: 15px;
    border-radius: 6px;
    text-align: center;
    font-weight: 500;
    color: #667eea;
}

/* Responsive Design */
@media (max-width: 768px) {
    header h1 {
        font-size: 2rem;
    }

    header .tagline {
        font-size: 1rem;
    }

    nav .container {
        flex-direction: column;
        gap: 10px;
    }

    nav a {
        display: block;
        text-align: center;
    }

    section {
        padding: 20px;
    }

    h2 {
        font-size: 1.5rem;
    }

    h3 {
        font-size: 1.2rem;
    }

    .hero {
        padding: 30px 20px;
    }

    .hero h2 {
        font-size: 1.8rem;
    }

    .hero p {
        font-size: 1rem;
    }

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

    .profile-container {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .profile-image {
        position: static;
        max-width: 250px;
        margin: 0 auto;
    }

    .contact-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }

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

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

    .btn-group {
        flex-direction: column;
    }

    .category-filter {
        justify-content: center;
    }
}