/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #6366f1;
    --secondary-color: #8b5cf6;
    --accent-color: #ec4899;
    --dark-bg: #0f172a;
    --card-bg: #1e293b;
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --border-color: #334155;
    --success-color: #10b981;
    --gradient-1: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-2: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-3: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--dark-bg);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Header */
.header {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(139, 92, 246, 0.1) 100%);
    border-bottom: 1px solid var(--border-color);
    padding: 3rem 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 50% 50%, rgba(99, 102, 241, 0.1), transparent 70%);
    animation: pulse 4s ease-in-out infinite;
}

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

.logo {
    font-size: 3rem;
    font-weight: 700;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
    position: relative;
    z-index: 1;
}

.logo-img {
    height: 80px;
    width: auto;
    margin-bottom: 1rem;
    position: relative;
    z-index: 1;
    filter: brightness(1.2);
    transition: transform 0.3s ease;
}

.logo-img:hover {
    transform: scale(1.05);
}

.tagline {
    color: var(--text-secondary);
    font-size: 1.2rem;
    position: relative;
    z-index: 1;
}

/* Search & Filter Section */
.search-section {
    padding: 3rem 0;
    background: rgba(30, 41, 59, 0.5);
}

.search-wrapper {
    margin-bottom: 2rem;
}

.search-input {
    width: 100%;
    max-width: 600px;
    padding: 1rem 1.5rem;
    font-size: 1.1rem;
    background: var(--card-bg);
    border: 2px solid var(--border-color);
    border-radius: 50px;
    color: var(--text-primary);
    transition: all 0.3s ease;
    display: block;
    margin: 0 auto;
}

.search-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1);
}

.filter-wrapper {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.filter-btn {
    padding: 0.75rem 1.5rem;
    background: var(--card-bg);
    border: 2px solid var(--border-color);
    border-radius: 50px;
    color: var(--text-secondary);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.filter-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateY(-2px);
}

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

/* Demos Section */
.demos-section {
    padding: 3rem 0 5rem;
}

.demos-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2rem;
    animation: fadeIn 0.6s ease-in;
}

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

/* Demo Card */
.demo-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    overflow: hidden;
    transition: all 0.3s ease;
    position: relative;
    animation: slideUp 0.5s ease-out backwards;
}

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

.demo-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    border-color: var(--primary-color);
}

.demo-card.hidden {
    display: none;
}

.demo-image {
    width: 100%;
    height: 200px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: flex-start;
    justify-content: center;
    font-size: 4rem;
    position: relative;
    overflow: hidden;
}

.demo-image span {
    position: relative;
    z-index: 2;
    height: 400px;
    display: flex;
    align-items: center;
    transition: transform 2.5s ease-in-out;
}

.demo-image img {
    position: relative;
    z-index: 2;
    width: 100%;
    height: 400px;
    object-fit: cover;
    object-position: top;
    transition: transform 2.5s ease-in-out;
}

.demo-card:hover .demo-image span {
    transform: translateY(-200px);
}

.demo-card:hover .demo-image img {
    transform: translateY(-200px);
}

.demo-image::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, transparent 0%, rgba(0, 0, 0, 0.3) 100%);
}

.demo-content {
    padding: 1.5rem;
}

.demo-category {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: rgba(99, 102, 241, 0.2);
    color: var(--primary-color);
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.demo-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

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

.demo-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.tag {
    padding: 0.25rem 0.75rem;
    background: rgba(139, 92, 246, 0.15);
    border: 1px solid rgba(139, 92, 246, 0.3);
    border-radius: 12px;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.demo-footer {
    display: flex;
    gap: 1rem;
}

.demo-link {
    flex: 1;
    padding: 0.75rem;
    background: var(--primary-color);
    color: white;
    text-align: center;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 600;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.demo-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s ease;
}

.demo-link:hover::before {
    left: 100%;
}

.demo-link:hover {
    background: #5558e3;
    transform: scale(1.05);
}

.demo-link.secondary {
    background: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
}

.demo-link.secondary:hover {
    background: rgba(99, 102, 241, 0.1);
}

/* No Results */
.no-results {
    display: none;
    text-align: center;
    padding: 4rem 0;
    font-size: 1.2rem;
    color: var(--text-secondary);
}

.no-results.show {
    display: block;
}

/* Footer */
.footer {
    background: var(--card-bg);
    border-top: 1px solid var(--border-color);
    padding: 2rem 0;
    text-align: center;
}

.footer .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

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

.social-links {
    display: flex;
    gap: 1.5rem;
}

.social-link {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 0 1rem;
    }

    .logo {
        font-size: 2rem;
    }

    .logo-img {
        height: 60px;
    }

    .tagline {
        font-size: 1rem;
    }

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

    .filter-wrapper {
        gap: 0.5rem;
    }

    .filter-btn {
        padding: 0.5rem 1rem;
        font-size: 0.9rem;
    }

    .footer .container {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .header {
        padding: 2rem 0;
    }

    .search-section {
        padding: 2rem 0;
    }

    .demos-section {
        padding: 2rem 0 3rem;
    }
}