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

:root {
    --primary-color: #111827;
    --primary-hover: #374151;
    --text-main: #111827;
    --text-muted: #6b7280;
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    
    /* Clean Lotto Colors */
    --color-1-10: #f59e0b;    /* Amber */
    --color-11-20: #3b82f6;   /* Blue */
    --color-21-30: #ef4444;   /* Red */
    --color-31-40: #6b7280;   /* Gray */
    --color-41-45: #10b981;   /* Emerald */
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.container {
    width: 100%;
    max-width: 500px;
}

.glass-card {
    background: var(--card-bg);
    border-radius: 24px;
    padding: 3rem 2rem;
    text-align: center;
    box-shadow: 0 10px 40px -10px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.04);
}

.title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text-main);
    letter-spacing: -0.025em;
}

.subtitle {
    font-size: 1rem;
    color: var(--text-muted);
    margin-bottom: 2.5rem;
    font-weight: 400;
}

.numbers-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    margin-bottom: 2.5rem;
    min-height: 80px;
}

.lotto-row {
    display: flex;
    justify-content: center;
    gap: 10px;
    width: 100%;
}

.number-circle {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.125rem;
    font-weight: 600;
    color: #ffffff;
    background: #e5e7eb;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
    opacity: 0;
    transform: scale(0.8) translateY(10px);
    animation: fadeInPop 0.4s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.number-circle.placeholder {
    opacity: 1;
    transform: scale(1) translateY(0);
    animation: none;
    background: #f8fafc;
    color: #94a3b8;
    box-shadow: none;
    border: 1px dashed #cbd5e1;
}

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

.generate-btn {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 1rem 2rem;
    font-size: 1.05rem;
    font-weight: 500;
    font-family: inherit;
    border-radius: 9999px;
    cursor: pointer;
    box-shadow: 0 4px 14px 0 rgba(0, 0, 0, 0.15);
    transition: all 0.2s ease;
    width: 100%;
    max-width: 250px;
}

.generate-btn:hover {
    background-color: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
}

.generate-btn:active {
    transform: translateY(1px);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

/* Responsive */
@media (max-width: 480px) {
    .number-circle {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }
    .lotto-row {
        gap: 8px;
    }
    .glass-card {
        padding: 2.5rem 1.5rem;
    }
}