/* 验证码尺寸变量 */
.captcha-card {
    --captcha-w: 320px;
    --captcha-img-h: 180px;
    --captcha-bar-h: 52px;
    --captcha-piece: 48px;
}

html {
    touch-action: none;
    touch-action: pan-y;
}

.mask {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 1001;
    width: 100%;
    height: 100vh;
    background: rgba(0, 0, 0, 0.35);
    display: none;
}

.verifybox {
    position: relative;
    box-sizing: border-box;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.verifybox-top {
    position: relative;
    padding: 0 56px 0 18px;
    height: 52px;
    line-height: 52px;
    font-size: 16px;
    font-weight: 500;
    color: #45494c;
    border-bottom: none;
    background: #fff;
    border-radius: 10px 10px 0 0;
    box-sizing: border-box;
}

.verifybox-top::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    height: 1px;
    background: rgba(0, 0, 0, 0.08);
    transform: scaleY(0.5);
    transform-origin: bottom;
    pointer-events: none;
}

.verifybox-bottom {
    box-sizing: border-box;
}

.verifybox-close {
    position: absolute;
    top: 50%;
    right: 14px;
    transform: translateY(-50%);
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: #8c8c8c;
    background: #f5f5f5;
    border-radius: 50%;
    transition: color 0.2s, background 0.2s, box-shadow 0.2s;
}

.verifybox-close svg {
    display: block;
    flex-shrink: 0;
}

.verifybox-close:hover {
    color: #45494c;
    background: #ebebeb;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.08);
}

.verifybox-close:active {
    background: #e0e0e0;
}

.captcha-card {
    width: calc(var(--captcha-w) + 44px);
    background: #fff;
    padding: 22px;
    border-radius: 0 0 10px 10px;
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.08);
    box-sizing: border-box;
}

.img-container {
    position: relative;
    width: var(--captcha-w);
    height: var(--captcha-img-h);
    background-color: #e8e8e8;
    overflow: hidden;
    border-radius: 6px;
}

.bg-img {
    width: 100%;
    height: 100%;
    object-fit: fill;
    display: block;
}

.puzzle-gap {
    position: absolute;
    width: var(--captcha-piece);
    height: var(--captcha-piece);
    background-color: rgba(0, 0, 0, 0.5);
    box-shadow: inset 0 0 10px rgba(0, 0, 0, 0.8);
    z-index: 1;
    border-radius: 6px;
}

.puzzle-piece {
    position: absolute;
    left: 12px;
    width: var(--captcha-piece);
    height: var(--captcha-piece);
    z-index: 2;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.45);
    border-radius: 6px;
    background-repeat: no-repeat;
    cursor: grab;
}

.puzzle-piece:active {
    cursor: grabbing;
}

.slider-track {
    position: relative;
    width: var(--captcha-w);
    height: var(--captcha-bar-h);
    background: linear-gradient(180deg, #fafbfc 0%, #f0f2f5 100%);
    border: 1px solid #dce1e6;
    margin-top: 18px;
    border-radius: calc(var(--captcha-bar-h) / 2);
    overflow: hidden;
    box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.04);
}

.slider-track.is-idle::before {
    content: '';
    position: absolute;
    top: 0;
    left: -60%;
    width: 50%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent 0%,
        rgba(24, 144, 255, 0.05) 35%,
        rgba(24, 144, 255, 0.12) 50%,
        rgba(24, 144, 255, 0.05) 65%,
        transparent 100%
    );
    animation: captcha-track-shine 2.8s ease-in-out infinite;
    pointer-events: none;
    z-index: 0;
}

@keyframes captcha-track-shine {
    0% {
        left: -60%;
    }
    100% {
        left: 120%;
    }
}

.slider-bg {
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    background: linear-gradient(90deg, #e6f4ff 0%, #d8eeff 100%);
    width: 0;
    transition: width 0.05s linear;
    z-index: 1;
}

.slider-track.is-dragging .slider-bg {
    transition: width 0.08s ease-out;
}

.slider-text {
    position: absolute;
    width: 100%;
    height: 100%;
    text-align: center;
    line-height: var(--captcha-bar-h);
    font-size: 15px;
    color: #45494d;
    letter-spacing: 0.02em;
    user-select: none;
    pointer-events: none;
    z-index: 2;
    transition: opacity 0.25s ease;
}

.slider-track.is-idle .slider-text {
    animation: captcha-text-breathe 2.2s ease-in-out infinite;
}

@keyframes captcha-text-breathe {
    0%,
    100% {
        opacity: 0.5;
        color: #8c8c8c;
    }
    50% {
        opacity: 1;
        color: #45494d;
    }
}

.slider-track.is-dragging .slider-text {
    opacity: 0;
    animation: none;
}

.slider-track.is-checking .slider-text {
    opacity: 0.85;
    animation: captcha-text-checking 1s ease-in-out infinite;
}

@keyframes captcha-text-checking {
    0%,
    100% {
        opacity: 0.45;
    }
    50% {
        opacity: 0.9;
    }
}

.slider-thumb {
    position: absolute;
    left: 0;
    top: 0;
    width: var(--captcha-bar-h);
    height: 100%;
    background-color: #fff;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.12);
    border-radius: 50%;
    cursor: grab;
    display: flex;
    justify-content: center;
    align-items: center;
    color: #8c8c8c;
    z-index: 3;
    transition: background-color 0.2s, color 0.2s, box-shadow 0.2s, transform 0.2s ease;
}

.slider-track.is-idle .slider-thumb {
    animation: captcha-thumb-nudge 2s ease-in-out infinite;
}

@keyframes captcha-thumb-nudge {
    0%,
    100% {
        transform: translateX(0);
        box-shadow: 0 2px 6px rgba(0, 0, 0, 0.12);
    }
    50% {
        transform: translateX(10px);
        box-shadow: 0 3px 12px rgba(24, 144, 255, 0.22);
    }
}

.slider-track.is-idle .slider-thumb .verify-icon--arrow {
    animation: captcha-arrow-pulse 2s ease-in-out infinite;
}

@keyframes captcha-arrow-pulse {
    0%,
    100% {
        opacity: 0.65;
    }
    50% {
        opacity: 1;
    }
}

.slider-track.is-dragging .slider-thumb,
.slider-track.is-checking .slider-thumb {
    animation: none;
    transform: none;
}

.slider-thumb:hover {
    background-color: #1890ff;
    color: #fff;
    box-shadow: 0 3px 10px rgba(24, 144, 255, 0.38);
}

.slider-track.is-idle .slider-thumb:hover {
    animation: none;
    transform: translateX(5px);
}

.slider-thumb .verify-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 16px;
    height: 16px;
    flex-shrink: 0;
    line-height: 0;
}

.slider-thumb .verify-icon svg {
    display: block;
}

.captcha-card.success .slider-bg {
    background: linear-gradient(90deg, #edf7e6 0%, #e2f0d9 100%);
}

.captcha-card.success .slider-thumb {
    background-color: #52c41a !important;
    color: #fff;
}

.captcha-card.fail .slider-bg {
    background: linear-gradient(90deg, #fff1f0 0%, #fce4e4 100%);
}

.captcha-card.fail .slider-thumb {
    background-color: #ff4d4f !important;
    color: #fff;
}

.refresh-btn {
    margin-top: 12px;
    font-size: 13px;
    color: #1890ff;
    cursor: pointer;
    text-align: right;
    user-select: none;
}

.refresh-btn:hover {
    color: #40a9ff;
}

.verify-tips {
    display: none !important;
}

@media (prefers-reduced-motion: reduce) {
    .slider-track.is-idle::before,
    .slider-track.is-idle .slider-text,
    .slider-track.is-idle .slider-thumb,
    .slider-track.is-idle .slider-thumb .verify-icon--arrow,
    .slider-track.is-checking .slider-text {
        animation: none;
    }

    .slider-track.is-idle .slider-text {
        opacity: 0.85;
    }
}

/* ========== 夜景模式（与 kehua_theme html.kehua-dark 一致） ========== */
:is(html.kehua-dark, body.kehua-dark) .kehua-captcha-mount .mask {
    background: rgba(0, 0, 0, 0.62);
}

:is(html.kehua-dark, body.kehua-dark) .kehua-captcha-mount .verifybox {
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.55), 0 0 0 1px rgba(255, 255, 255, 0.06);
}

:is(html.kehua-dark, body.kehua-dark) .kehua-captcha-mount .verifybox-top {
    color: #e4e6eb;
    background: #1e2228;
}

:is(html.kehua-dark, body.kehua-dark) .kehua-captcha-mount .verifybox-top::after {
    background: rgba(255, 255, 255, 0.1);
}

:is(html.kehua-dark, body.kehua-dark) .kehua-captcha-mount .verifybox-close {
    color: #9ca3af;
    background: rgba(255, 255, 255, 0.08);
}

:is(html.kehua-dark, body.kehua-dark) .kehua-captcha-mount .verifybox-close:hover {
    color: #e4e6eb;
    background: rgba(91, 155, 255, 0.15);
    box-shadow: none;
}

:is(html.kehua-dark, body.kehua-dark) .kehua-captcha-mount .verifybox-close:active {
    background: rgba(91, 155, 255, 0.22);
}

:is(html.kehua-dark, body.kehua-dark) .kehua-captcha-mount .captcha-card {
    background: #1e2228;
    box-shadow: none;
}

:is(html.kehua-dark, body.kehua-dark) .kehua-captcha-mount .img-container {
    background-color: #252a31;
}

:is(html.kehua-dark, body.kehua-dark) .kehua-captcha-mount .slider-track {
    background: linear-gradient(180deg, #2a2f36 0%, #252a31 100%);
    border-color: #3a3f47;
    box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.25);
}

:is(html.kehua-dark, body.kehua-dark) .kehua-captcha-mount .slider-track.is-idle::before {
    background: linear-gradient(
        90deg,
        transparent 0%,
        rgba(91, 155, 255, 0.04) 35%,
        rgba(91, 155, 255, 0.1) 50%,
        rgba(91, 155, 255, 0.04) 65%,
        transparent 100%
    );
}

:is(html.kehua-dark, body.kehua-dark) .kehua-captcha-mount .slider-bg {
    background: linear-gradient(90deg, rgba(91, 155, 255, 0.22) 0%, rgba(91, 155, 255, 0.14) 100%);
}

:is(html.kehua-dark, body.kehua-dark) .kehua-captcha-mount .slider-text {
    color: #9ca3af;
}

:is(html.kehua-dark, body.kehua-dark) .kehua-captcha-mount .slider-track.is-idle .slider-text {
    animation-name: captcha-text-breathe-dark;
}

@keyframes captcha-text-breathe-dark {
    0%,
    100% {
        opacity: 0.55;
        color: #6b7280;
    }
    50% {
        opacity: 1;
        color: #b0b3b8;
    }
}

:is(html.kehua-dark, body.kehua-dark) .kehua-captcha-mount .slider-thumb {
    background-color: #2f3540;
    color: #9ca3af;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.35);
}

:is(html.kehua-dark, body.kehua-dark) .kehua-captcha-mount .slider-track.is-idle .slider-thumb {
    animation-name: captcha-thumb-nudge-dark;
}

@keyframes captcha-thumb-nudge-dark {
    0%,
    100% {
        transform: translateX(0);
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.35);
    }
    50% {
        transform: translateX(10px);
        box-shadow: 0 3px 14px rgba(91, 155, 255, 0.28);
    }
}

:is(html.kehua-dark, body.kehua-dark) .kehua-captcha-mount .slider-thumb:hover {
    background-color: #5b9bff;
    color: #fff;
    box-shadow: 0 3px 12px rgba(91, 155, 255, 0.4);
}

:is(html.kehua-dark, body.kehua-dark) .kehua-captcha-mount .captcha-card.success .slider-bg {
    background: linear-gradient(90deg, rgba(82, 196, 26, 0.28) 0%, rgba(82, 196, 26, 0.16) 100%);
}

:is(html.kehua-dark, body.kehua-dark) .kehua-captcha-mount .captcha-card.fail .slider-bg {
    background: linear-gradient(90deg, rgba(255, 77, 79, 0.28) 0%, rgba(255, 77, 79, 0.16) 100%);
}

:is(html.kehua-dark, body.kehua-dark) .kehua-captcha-mount .refresh-btn {
    color: #5b9bff;
}

:is(html.kehua-dark, body.kehua-dark) .kehua-captcha-mount .refresh-btn:hover {
    color: #7eb0ff;
}