:root {
    --bg-main: #f9fafb;
    --text-main: #1f2937;
    --border-light: #e5e7eb;
    --accent: #111827;
}

body {
    background-color: var(--bg-main);
    color: var(--text-main);
    font-family: 'Poppins', sans-serif;
}

.glass-card {
    background: #ffffff;
    border: 1px solid var(--border-light);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.glass-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

.btn-black {
    background: var(--accent);
    color: #ffffff;
    transition: all 0.2s ease;
}

.btn-black:hover {
    background: #374151;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.btn-outline {
    border: 2px solid var(--border-light);
    color: var(--text-main);
    background: transparent;
    transition: all 0.2s ease;
}

.btn-outline:hover {
    border-color: var(--accent);
    background: var(--bg-main);
}

.fade-in {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeIn 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

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

.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }