:root {
    --primary-color: #3b82f6;
    --primary-dark: #1d4ed8;
    --primary-light: #60a5fa;
    --secondary-color: #f8fafc;
    --accent-color: #06b6d4;
    --background-dark: #0f172a;
    --background-card: #1e293b;
    --text-light: #f1f5f9;
    --text-muted: #94a3b8;
    --border-color: #334155;
    --gradient-primary: linear-gradient(135deg, #3b82f6 0%, #06b6d4 100%);
    --gradient-secondary: linear-gradient(135deg, #1e293b 0%, #334155 100%);
    --gradient-3d: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.3), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --shadow-3d: 0 30px 60px -12px rgba(59, 130, 246, 0.25);
    --glow-primary: 0 0 20px rgba(59, 130, 246, 0.3);
    --glow-accent: 0 0 30px rgba(6, 182, 212, 0.4);
}

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

body {
    background: var(--background-dark);
    color: var(--text-light);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    padding: 0.875rem 2rem;
    border-radius: 12px;
    font-weight: 600;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--shadow-lg);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
    background: linear-gradient(135deg, #1d4ed8 0%, #0891b2 100%);
}

.btn-secondary {
    background: rgba(248, 250, 252, 0.05);
    color: var(--text-light);
    padding: 0.875rem 2rem;
    border-radius: 12px;
    font-weight: 600;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(248, 250, 252, 0.1);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    font-weight: 700;
}

.card {
    background: var(--background-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    backdrop-filter: blur(10px);
}

.card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-color);
}

.glass-effect {
    background: rgba(248, 250, 252, 0.02);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.card-3d {
    background: var(--background-card);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 2rem;
    transform-style: preserve-3d;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.card-3d::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-3d);
    opacity: 0;
    transition: opacity 0.4s ease;
    border-radius: 20px;
    z-index: -1;
}

.card-3d:hover {
    transform: translateY(-15px) rotateX(5deg) rotateY(5deg);
    box-shadow: var(--shadow-3d), var(--glow-primary);
    border-color: var(--primary-color);
}

.card-3d:hover::before {
    opacity: 0.1;
}

.floating-animation {
    animation: float 6s ease-in-out infinite;
}

.pulse-glow {
    animation: pulseGlow 2s ease-in-out infinite alternate;
}

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

@keyframes pulseGlow {
    0% { box-shadow: var(--glow-primary); }
    100% { box-shadow: var(--glow-accent); }
}

.glass-morph {
    background: rgba(30, 41, 59, 0.4);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
}

.neon-glow {
    box-shadow: 0 0 10px rgba(59, 130, 246, 0.5),
                0 0 20px rgba(59, 130, 246, 0.3),
                0 0 30px rgba(59, 130, 246, 0.2);
}

.perspective-3d {
    transform-style: preserve-3d;
    perspective: 2000px;
}

@keyframes rotate3d {
    0% { transform: rotateY(0deg) rotateX(0deg); }
    100% { transform: rotateY(360deg) rotateX(360deg); }
}

.rotate-3d-slow {
    animation: rotate3d 30s linear infinite;
}

.perspective-container {
    perspective: 1000px;
    transform-style: preserve-3d;
}

.gradient-text-3d {
    background: var(--gradient-3d);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    font-weight: 700;
    text-shadow: 0 0 30px rgba(59, 130, 246, 0.5);
}