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

body { font-family: 'Inter', sans-serif; background: #0f0f0f; color: #fff; }

::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: #1a1a1a; }
::-webkit-scrollbar-thumb { background: #333; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #555; }

.flash-message {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 9999;
    padding: 12px 24px;
    border-radius: 12px;
    font-size: 14px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 8px;
    animation: slideIn 0.3s ease-out;
    backdrop-filter: blur(10px);
}
.flash-message.success { background: rgba(34, 197, 94, 0.2); color: #4ade80; border: 1px solid rgba(34, 197, 94, 0.3); }
.flash-message.error { background: rgba(239, 68, 68, 0.2); color: #f87171; border: 1px solid rgba(239, 68, 68, 0.3); }

@keyframes slideIn {
    from { transform: translateX(100px); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

.modal-overlay { animation: fadeIn 0.2s ease-out; }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

input[type="range"] { height: 6px; appearance: none; background: #374151; border-radius: 3px; outline: none; }
input[type="range"]::-webkit-slider-thumb { appearance: none; width: 18px; height: 18px; border-radius: 50%; background: #888; cursor: pointer; border: 2px solid #1f2937; }
input[type="range"]::-moz-range-thumb { width: 18px; height: 18px; border-radius: 50%; background: #888; cursor: pointer; border: 2px solid #1f2937; }