/* ========================================
   Toast Notification
   ======================================== */

.toast {
    position: fixed;
    bottom: calc(var(--status-bar-height) + var(--space-lg));
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--color-primary);
    color: var(--color-bg);
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    z-index: 10002;
}

.toast.show {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

/* 常驻提示（如「字体下载中」）：不自动消失，需显式关闭 */
.toast.persistent {
    background: var(--color-primary);
    color: var(--color-bg);
    padding-right: calc(var(--space-lg) + 14px);
}
.toast.persistent::after {
    content: '';
    position: absolute;
    right: var(--space-sm);
    top: 50%;
    width: 10px;
    height: 10px;
    margin-top: -5px;
    border-radius: 50%;
    border: 2px solid currentColor;
    border-top-color: transparent;
    animation: toastSpin 0.7s linear infinite;
}
@keyframes toastSpin {
    to { transform: rotate(360deg); }
}

.toast.error {
    background: var(--color-accent);
}

.toast.edit-mode {
    background: var(--bg-page-solid, var(--color-bg-secondary));
    color: var(--color-primary);
    box-shadow: 0 4px 16px var(--color-shadow-hover);
}