:root {
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --secondary: #60a5fa;
    --bg-dark: #020617;
    --bg-card: rgba(30, 41, 59, 0.4);
    --border: rgba(255, 255, 255, 0.08);
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --glass: rgba(2, 6, 23, 0.7);
    --shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.5);
    --accent-gradient: linear-gradient(135deg, #2563eb 0%, #60a5fa 100%);

    /* Responsive Spacing */
    --padding-mobile: 1.25rem;
    --padding-tablet: 2rem;
    --padding-desktop: 3rem;
}

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

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
}

#bg-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: radial-gradient(circle at 50% 50%, #1e293b 0%, #020617 100%);
}

.mesh-gradient {
    position: absolute;
    width: 100%;
    height: 100%;
    background-image:
        radial-gradient(at 0% 0%, rgba(37, 99, 235, 0.15) 0, transparent 50%),
        radial-gradient(at 100% 100%, rgba(96, 165, 250, 0.15) 0, transparent 50%);
    filter: blur(80px);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--padding-mobile);
}

@media (min-width: 768px) {
    .container {
        padding: var(--padding-tablet);
    }
}

@media (min-width: 1024px) {
    .container {
        padding: var(--padding-desktop);
    }
}

/* Glassmorphism Classes */
.glass-panel {
    background: var(--bg-card);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border);
    border-radius: 20px;
    box-shadow: var(--shadow);
}

/* Typography */
h1,
h2,
h3 {
    font-weight: 800;
    letter-spacing: -0.025em;
}

.gradient-text {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Navigation */
.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 0;
    flex-wrap: wrap;
    gap: 1rem;
}

.nav-links {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

@media (max-width: 640px) {
    .nav {
        justify-content: center;
        text-align: center;
    }

    .nav-links {
        justify-content: center;
        width: 100%;
    }
}

/* Hero Section */
.hero-section {
    padding: 4rem 0 2rem 0;
    text-align: center;
}

.hero-title {
    font-size: clamp(2.5rem, 8vw, 5rem);
    line-height: 1.1;
    margin-bottom: 1.5rem;
}

.hero-subtitle {
    font-size: clamp(1rem, 4vw, 1.5rem);
    color: var(--text-muted);
    max-width: 700px;
    margin: 0 auto 3rem auto;
}

@media (min-width: 768px) {
    .hero-section {
        padding: 8rem 0 4rem 0;
    }
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-top: 4rem;
}

.feature-card {
    padding: 2rem;
    transition: transform 0.3s ease;
}

@media (min-width: 768px) {
    .feature-card {
        padding: 2.5rem;
    }

    .features-grid {
        gap: 2rem;
    }
}

.feature-icon {
    width: 48px;
    height: 48px;
    background: rgba(37, 99, 235, 0.1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    border-radius: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: none;
    gap: 0.5rem;
    text-decoration: none;
    font-size: 1rem;
}

.btn-primary {
    background: var(--accent-gradient);
    color: white;
    box-shadow: 0 4px 15px rgba(37, 99, 235, 0.2);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(37, 99, 235, 0.4);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-main);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--primary);
    transform: translateY(-2px);
}

/* Form Elements */
.input-group {
    margin-bottom: 1.5rem;
}

label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

input,
textarea {
    width: 100%;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 0.75rem 1rem;
    color: white;
    font-size: 1rem;
    transition: all 0.2s;
}

/* Utility */
.mb-4 {
    margin-bottom: 1rem;
}

.mb-8 {
    margin-bottom: 2rem;
}

.text-center {
    text-align: center;
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fade-in {
    animation: fadeIn 0.8s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

/* JSON Viewer */
.json-viewer {
    padding: 1rem;
    font-family: 'Fira Code', monospace;
    font-size: 0.85rem;
    overflow-x: auto;
}

@media (min-width: 768px) {
    .json-viewer {
        font-size: 0.9rem;
    }
}