::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(156, 163, 175, 0.5); border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: rgba(107, 114, 128, 0.8); }

.glass-panel {
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.4);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.05);
}
.dark .glass-panel {
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

.nav-btn.active {
    color: #0EA5E9;
    font-weight: 700;
}

/* Toast Notification Style */
#toast-container {
    visibility: hidden;
    min-width: 280px; /* 너비 약간 키움 */
    background-color: #ef4444; /* Red-500 */
    color: #fff;
    text-align: center;
    border-radius: 12px; /* 둥글게 처리 */
    padding: 16px 24px;
    position: fixed;
    z-index: 100;
    font-size: 15px;
    font-weight: 600;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%) scale(0.9); /* 시작 크기 90% */
    opacity: 0;
    transition: opacity 0.3s ease-out, transform 0.3s cubic-bezier(0.18, 0.89, 0.32, 1.28);
}

#toast-container.show {
    visibility: visible;
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
}

/* Custom Select Arrow for Product Charts */
.custom-select-arrow {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%2364748b' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    background-size: 1.25em 1.25em;
    padding-right: 2.5rem !important; /* 화살표 공간 확보 */
    text-overflow: ellipsis;
    white-space: nowrap;
    overflow: hidden;
}

.dark .custom-select-arrow {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%2394a3b8' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e");
}