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

body {
    font-family: 'Inter', sans-serif;
    background: linear-gradient(135deg, #1a1c2c 0%, #4a192c 100%); /* Deep dark gradient base */
    color: #f3f4f6;
    min-height: 100vh;
}

/* Gradients */
.gradient-purple { background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); }
.gradient-blue { background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%); }
.gradient-green { background: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%); }
.gradient-orange { background: linear-gradient(135deg, #fa709a 0%, #fee140 100%); }
.gradient-pink { background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%); }
.gradient-dark { background: linear-gradient(135deg, #2d3436 0%, #000000 74%); }

/* Glassmorphism */
.glass {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
}

.glass-card {
    background: rgba(30, 30, 30, 0.6);
    backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 1rem;
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: scale(0.98); }
    to { opacity: 1; transform: scale(1); }
}

@keyframes slideInUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.animate-fade-in { animation: fadeIn 0.4s ease-out forwards; }
.animate-slide-in { animation: slideInUp 0.5s ease-out forwards; }

.delay-100 { animation-delay: 0.1s; }
.delay-200 { animation-delay: 0.2s; }
.delay-300 { animation-delay: 0.3s; }

/* Interactive */
.card-hover {
    transition: all 0.3s ease;
}
.card-hover:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.3);
}

/* Map specific */
#japan-map-container {
    position: relative;
    width: 100%;
    max-width: 800px;
    margin: 0 auto;
    aspect-ratio: 750/800;
}

.prefecture-cell {
    position: absolute;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    font-weight: bold;
    color: #fff;
    cursor: pointer;
    border-radius: 4px;
    transition: all 0.2s;
    text-shadow: 0 1px 2px rgba(0,0,0,0.5);
    border: 1px solid rgba(255,255,255,0.2);
}

.prefecture-cell:hover {
    z-index: 10;
    transform: scale(1.1);
    box-shadow: 0 4px 12px rgba(0,0,0,0.4);
    border-color: #fff;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: rgba(0,0,0,0.1); 
}
::-webkit-scrollbar-thumb {
    background: rgba(255,255,255,0.2); 
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: rgba(255,255,255,0.4); 
}