@keyframes carx-loader-spin {
    to {
        transform: rotate(360deg);
    }
}

@keyframes carx-loader-pulse {
    0%, 100% {
        opacity: .52;
        transform: scale(.86);
    }
    50% {
        opacity: 1;
        transform: scale(1);
    }
}

:root {
    --carx-loader-accent: var(--accent, #60a5fa);
    --carx-loader-muted: rgba(148, 163, 184, .24);
    --carx-loader-surface: rgba(15, 23, 42, .42);
}

/*
 * 全站兜住所有旧的 ph-spinner + animate-spin：
 * 图标字体默认是 inline，transform 不稳定，所以会看起来像一个卡住的圆。
 */
.animate-spin {
    display: inline-block !important;
    transform-origin: 50% 50%;
    animation: carx-loader-spin .72s linear infinite !important;
    will-change: transform;
}

.ph-spinner.animate-spin,
.ph-spinner-gap.animate-spin,
.ph-fill.ph-spinner.animate-spin,
.ph-fill.ph-spinner-gap.animate-spin,
.spinner {
    width: 1em;
    height: 1em;
    min-width: 1em;
    border-radius: 999px;
    border: 2px solid currentColor;
    border-left-color: var(--carx-loader-muted);
    border-bottom-color: var(--carx-loader-muted);
    line-height: 1;
    vertical-align: -.14em;
}

.ph-spinner.animate-spin::before,
.ph-spinner-gap.animate-spin::before,
.ph-fill.ph-spinner.animate-spin::before,
.ph-fill.ph-spinner-gap.animate-spin::before,
.spinner::before {
    content: "" !important;
}

.carx-loader {
    position: relative;
    display: inline-grid;
    place-items: center;
    width: 42px;
    height: 42px;
    border-radius: 999px;
    color: var(--carx-loader-accent);
    background:
        radial-gradient(circle at 50% 50%, rgba(96, 165, 250, .18), transparent 58%),
        linear-gradient(145deg, rgba(255, 255, 255, .12), rgba(255, 255, 255, .02));
    box-shadow:
        inset 0 0 0 1px rgba(148, 163, 184, .14),
        0 12px 34px rgba(15, 23, 42, .24),
        0 0 22px rgba(96, 165, 250, .16);
    isolation: isolate;
}

.carx-loader::before {
    content: "";
    position: absolute;
    inset: 6px;
    border-radius: inherit;
    border: 3px solid rgba(148, 163, 184, .22);
    border-top-color: currentColor;
    border-right-color: currentColor;
    animation: carx-loader-spin .72s linear infinite;
}

.carx-loader::after {
    content: "";
    width: 7px;
    height: 7px;
    border-radius: 999px;
    background: currentColor;
    box-shadow: 0 0 16px currentColor;
    animation: carx-loader-pulse 1.2s ease-in-out infinite;
}

.carx-loader--sm {
    width: 18px;
    height: 18px;
    background: transparent;
    box-shadow: none;
}

.carx-loader--sm::before {
    inset: 1px;
    border-width: 2px;
}

.carx-loader--sm::after {
    display: none;
}

.carx-loader--lg {
    width: 54px;
    height: 54px;
}

.carx-loading-block {
    display: flex;
    min-height: 180px;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 14px;
    color: var(--muted, #94a3b8);
}

.carx-loading-title {
    color: var(--text, #f8fafc);
    font-weight: 700;
    letter-spacing: -.02em;
}

@media (prefers-reduced-motion: reduce) {
    .animate-spin,
    .carx-loader::before,
    .carx-loader::after {
        animation-duration: 1.35s !important;
    }
}