:root {
    --bg-dark: #0a0a0f;
    --text-main: #f8f9fa;
    --text-muted: #a0a0b0;
    --card-bg: rgba(20, 20, 25, 0.6);
    --card-border: rgba(255, 255, 255, 0.08);
    --accent-blue: #3b82f6;
    --accent-purple: #8b5cf6;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', -apple-system, sans-serif;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
    position: relative;
}

/* Background Effects */
.background-effects {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1;
    overflow: hidden;
}

.glow {
    position: absolute;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.15;
}

.glow-1 {
    top: -200px;
    left: -100px;
    background: var(--accent-purple);
}

.glow-2 {
    bottom: -200px;
    right: -100px;
    background: var(--accent-blue);
}

/* Header */
.hub-header {
    border-bottom: 1px solid var(--card-border);
    background: rgba(10, 10, 15, 0.7);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.logo {
    font-size: 1.25rem;
    font-weight: 800;
    background: linear-gradient(to right, #fff, #a0a0b0);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    margin-left: 2rem;
    font-size: 0.95rem;
    font-weight: 600;
    transition: color 0.2s ease;
}

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

/* Hero Section */
.hero-section {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 6rem 2rem;
    text-align: center;
    max-width: 1200px;
    margin: 0 auto;
}

.hero-title {
    font-size: 4.5rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, #fff 0%, #a0a0b0 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -0.02em;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-muted);
    max-width: 600px;
    margin-bottom: 4rem;
    line-height: 1.6;
}

/* Cards */
.cards-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
    width: 100%;
    max-width: 900px;
}

.project-card {
    position: relative;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 24px;
    padding: 2.5rem;
    text-decoration: none;
    color: var(--text-main);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), border-color 0.3s ease;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    overflow: hidden;
    text-align: left;
    display: block;
}

.project-card:hover {
    transform: translateY(-8px);
    border-color: rgba(255, 255, 255, 0.2);
}

.card-content {
    position: relative;
    z-index: 2;
}

.card-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.integration-icon {
    background: rgba(139, 92, 246, 0.15);
    color: var(--accent-purple);
}

.api-icon {
    background: rgba(59, 130, 246, 0.15);
    color: var(--accent-blue);
}

.card-icon svg {
    width: 24px;
    height: 24px;
}

.project-card h2 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.project-card p {
    color: var(--text-muted);
    line-height: 1.6;
    font-size: 0.95rem;
}

.card-glow {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 50% 0%, rgba(255,255,255,0.05) 0%, transparent 70%);
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 1;
}

.project-card:hover .card-glow {
    opacity: 1;
}

/* Footer */
.hub-footer {
    text-align: center;
    padding: 2rem;
    color: var(--text-muted);
    font-size: 0.85rem;
    border-top: 1px solid var(--card-border);
}

/* Responsive */
@media (max-width: 768px) {
    .hero-title {
        font-size: 3rem;
    }
    
    .hero-section {
        padding: 4rem 1.5rem;
    }
    
    .nav-links a {
        margin-left: 1rem;
    }
}