@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

* {
    font-family: 'Inter', sans-serif;
}

body {
    background: linear-gradient(135deg, #1e293b 0%, #334155 25%, #475569 50%, #64748b 75%, #94a3b8 100%);
    min-height: 100vh;
    animation: backgroundShift 8s ease-in-out infinite alternate;
}

@keyframes backgroundShift {
    0% { background-position: 0% 50%; }
    100% { background-position: 100% 50%; }
}

.gearbox-gradient {
    background: linear-gradient(135deg, #1e293b 0%, #334155 25%, #475569 50%, #64748b 75%, #94a3b8 100%);
}

.card-shadow {
    box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.4), 0 8px 20px -5px rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(15px);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.card-shadow:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 30px 60px -15px rgba(0, 0, 0, 0.5), 0 15px 30px -10px rgba(0, 0, 0, 0.4);
}

.upload-zone {
    transition: all 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    border: 2px dashed rgba(255, 255, 255, 0.3);
    background: rgba(255, 255, 255, 0.05);
    position: relative;
    overflow: hidden;
}

.upload-zone::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(59, 130, 246, 0.2), transparent);
    transition: left 0.8s;
}

.upload-zone:hover::before {
    left: 100%;
}

.upload-zone:hover {
    border-color: #3b82f6;
    background: rgba(59, 130, 246, 0.1);
    transform: scale(1.02);
}

.metric-card {
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    background: rgba(255, 255, 255, 0.95);
    position: relative;
    overflow: hidden;
}

.metric-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, #3b82f6, #8b5cf6, #f59e0b);
    transition: left 0.6s ease;
}

.metric-card:hover::before {
    left: 100%;
}

.metric-card:hover {
    transform: translateY(-10px) rotateX(5deg);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}

.glass-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(15px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    animation: pulse 3s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 0.8; }
    50% { opacity: 1; }
}

.animate-bounce-slow {
    animation: bounce 3s infinite;
}

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

@keyframes glow {
    from { box-shadow: 0 0 20px rgba(59, 130, 246, 0.3); }
    to { box-shadow: 0 0 30px rgba(59, 130, 246, 0.6); }
}

/* Mobile responsive improvements */
@media (max-width: 480px) {
    .xs\:block {
        display: block !important;
    }
}

@media (max-width: 375px) {
    .xs\:block {
        display: none !important;
    }
}