:root {
    --sc-bg: #f4f8f2;
    --sc-surface: rgba(255, 255, 255, 0.88);
    --sc-surface-strong: rgba(255, 255, 255, 0.96);
    --sc-stroke: rgba(107, 161, 91, 0.2);
    --sc-stroke-strong: rgba(107, 161, 91, 0.38);
    --sc-text: #1a2a1c;
    --sc-muted: rgba(26, 42, 28, 0.58);
    --sc-primary: #6BA15B;
    --sc-primary-dark: #4f7d44;
    --sc-accent: #8B9C7C;
    --sc-radius: 18px;
    --sc-shadow: 0 16px 40px rgba(38, 70, 50, 0.1);
    --sc-shadow-soft: 0 8px 24px rgba(38, 70, 50, 0.06);
}

html[data-theme="dark"] {
    --sc-bg: #0c100e;
    --sc-surface: rgba(20, 28, 23, 0.86);
    --sc-surface-strong: rgba(24, 32, 27, 0.94);
    --sc-stroke: rgba(197, 219, 179, 0.16);
    --sc-stroke-strong: rgba(197, 219, 179, 0.28);
    --sc-text: #e8f0ea;
    --sc-muted: rgba(232, 240, 234, 0.62);
    --sc-shadow: 0 16px 40px rgba(0, 0, 0, 0.38);
    --sc-shadow-soft: 0 8px 24px rgba(0, 0, 0, 0.22);
}

* { box-sizing: border-box; }

.single-char-page {
    margin: 0;
    min-height: 100vh;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    color: var(--sc-text);
    background: var(--sc-bg);
    line-height: 1.5;
}

.sc-bg {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

.sc-bg-blur {
    position: absolute;
    width: 520px;
    height: 520px;
    border-radius: 50%;
    filter: blur(72px);
    opacity: 0.38;
}

.sc-bg-blur-a {
    left: -120px;
    top: -140px;
    background: radial-gradient(circle, rgba(107, 161, 91, 0.45), transparent 68%);
}

.sc-bg-blur-b {
    right: -160px;
    bottom: -120px;
    background: radial-gradient(circle, rgba(139, 156, 124, 0.32), transparent 70%);
}

.sc-bg-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(107, 161, 91, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(107, 161, 91, 0.04) 1px, transparent 1px);
    background-size: 32px 32px;
    mask-image: radial-gradient(ellipse at center, black 20%, transparent 78%);
}

.sc-container {
    position: relative;
    z-index: 1;
    max-width: 1320px;
    padding: 20px 20px 32px;
    margin: 0 auto;
}

/* ── Topbar ── */
.sc-topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 14px 18px;
    margin-bottom: 16px;
    border-radius: var(--sc-radius);
    background: var(--sc-surface);
    border: 1px solid var(--sc-stroke);
    box-shadow: var(--sc-shadow-soft);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
}

.sc-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    min-width: 0;
}

.sc-back {
    width: 38px;
    height: 38px;
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    border: 1px solid var(--sc-stroke);
    background: var(--sc-surface-strong);
    color: var(--sc-text);
    text-decoration: none;
    transition: transform 0.15s ease, border-color 0.15s ease;
}

.sc-back:hover {
    transform: translateX(-2px);
    border-color: var(--sc-stroke-strong);
}

.sc-logo {
    width: 42px;
    height: 42px;
    border-radius: 12px;
    object-fit: cover;
    flex-shrink: 0;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.sc-title {
    margin: 0;
    font-size: 19px;
    font-weight: 900;
    letter-spacing: 0.02em;
}

.sc-subtitle-row {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 6px;
}

.sc-pill {
    padding: 2px 9px;
    border-radius: 999px;
    background: rgba(107, 161, 91, 0.16);
    color: var(--sc-primary-dark);
    font-size: 10px;
    font-weight: 800;
    letter-spacing: 0.04em;
}

html[data-theme="dark"] .sc-pill {
    color: #b8d4aa;
}

.sc-pill-soft {
    background: rgba(91, 123, 184, 0.12);
    color: #5b7bb8;
}

html[data-theme="dark"] .sc-pill-soft {
    color: #9bb8e8;
}

.sc-topbar-actions {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}

.sc-link-btn {
    padding: 9px 16px;
    border-radius: 12px;
    border: 1px solid var(--sc-stroke);
    background: var(--sc-surface-strong);
    font-size: 12px;
    font-weight: 800;
    color: var(--sc-text);
    text-decoration: none;
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.sc-link-btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--sc-shadow-soft);
}

.sc-theme-btn {
    width: 40px;
    height: 40px;
    padding: 0;
    border: 1px solid var(--sc-stroke-strong);
    border-radius: 12px;
    background: var(--sc-surface-strong);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.sc-theme-btn img {
    width: 22px;
    height: 22px;
    display: block;
    object-fit: contain;
}

/* ── Layout ── */
.sc-main {
    display: grid;
    grid-template-columns: 380px minmax(0, 1fr);
    gap: 16px;
    align-items: stretch;
}

.sc-panel {
    border-radius: var(--sc-radius);
    background: var(--sc-surface);
    border: 1px solid var(--sc-stroke);
    box-shadow: var(--sc-shadow);
    padding: 18px;
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
}

.sc-panel-right {
    position: relative;
    min-height: 560px;
}

.sc-panel-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--sc-stroke);
}

.sc-panel-head h2 {
    margin: 0;
    font-size: 16px;
    font-weight: 900;
}

.sc-step {
    font-size: 11px;
    font-weight: 800;
    color: var(--sc-muted);
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

/* ── Upload ── */
.sc-upload {
    border: 2px dashed var(--sc-stroke-strong);
    border-radius: 16px;
    min-height: 240px;
    display: flex;
    align-items: center;
    justify-content: center;
    background:
        radial-gradient(circle at 50% 0%, rgba(107, 161, 91, 0.1), transparent 55%),
        rgba(107, 161, 91, 0.03);
    cursor: pointer;
    transition: border-color 0.2s ease, background 0.2s ease, transform 0.2s ease;
    margin-bottom: 14px;
    overflow: hidden;
}

.sc-upload:hover,
.sc-upload.dragover {
    border-color: var(--sc-primary);
    background:
        radial-gradient(circle at 50% 0%, rgba(107, 161, 91, 0.16), transparent 55%),
        rgba(107, 161, 91, 0.06);
    transform: translateY(-1px);
}

.sc-upload-inner {
    text-align: center;
    padding: 28px 20px;
}

.sc-upload-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 14px;
    border-radius: 16px;
    background: var(--sc-surface-strong);
    border: 1px solid var(--sc-stroke);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--sc-primary);
    box-shadow: var(--sc-shadow-soft);
}

.sc-upload-title {
    margin: 0;
    font-size: 15px;
    font-weight: 800;
}

.sc-hint {
    margin: 8px 0 0;
    font-size: 12px;
    color: var(--sc-muted);
}

.sc-thumb-wrap {
    width: 100%;
    padding: 16px;
    text-align: center;
}

.sc-thumb-wrap[hidden] { display: none !important; }

.sc-thumb-frame {
    padding: 12px;
    border-radius: 14px;
    background: var(--sc-surface-strong);
    border: 1px solid var(--sc-stroke);
}

.sc-thumb-frame img {
    max-width: 100%;
    max-height: 220px;
    border-radius: 8px;
    object-fit: contain;
    display: block;
    margin: 0 auto;
}

.sc-clear-btn {
    margin-top: 12px;
    padding: 7px 14px;
    border-radius: 10px;
    border: 1px solid var(--sc-stroke);
    background: transparent;
    color: var(--sc-muted);
    font-size: 12px;
    font-weight: 700;
    cursor: pointer;
    transition: color 0.15s ease, border-color 0.15s ease;
}

.sc-clear-btn:hover {
    color: var(--sc-text);
    border-color: var(--sc-stroke-strong);
}

.sc-action-row {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.sc-primary-btn {
    width: 100%;
    padding: 14px 18px;
    border: none;
    border-radius: 14px;
    background: linear-gradient(135deg, #6BA15B 0%, #7fb06f 50%, #8BB87A 100%);
    color: #fff;
    font-size: 15px;
    font-weight: 900;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    box-shadow: 0 10px 28px rgba(107, 161, 91, 0.32);
    transition: transform 0.15s ease, box-shadow 0.15s ease, opacity 0.15s ease;
}

.sc-primary-btn:not(:disabled):hover {
    transform: translateY(-2px);
    box-shadow: 0 14px 32px rgba(107, 161, 91, 0.38);
}

.sc-primary-btn:disabled {
    opacity: 0.42;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.sc-btn-icon {
    font-size: 18px;
    line-height: 1;
    transition: transform 0.15s ease;
}

.sc-primary-btn:not(:disabled):hover .sc-btn-icon {
    transform: translateX(3px);
}

.sc-secondary-btn {
    width: 100%;
    padding: 11px 16px;
    border-radius: 12px;
    border: 1px solid var(--sc-stroke-strong);
    background: var(--sc-surface-strong);
    color: var(--sc-text);
    font-size: 14px;
    font-weight: 800;
    cursor: pointer;
    transition: transform 0.15s ease, border-color 0.15s ease, background 0.15s ease, opacity 0.15s ease;
}

.sc-secondary-btn:not(:disabled):hover {
    transform: translateY(-1px);
    border-color: rgba(107, 161, 91, 0.55);
}

.sc-secondary-btn:disabled {
    opacity: 0.42;
    cursor: not-allowed;
}

.sc-secondary-btn.is-active {
    border-color: rgba(107, 161, 91, 0.65);
    background: rgba(107, 161, 91, 0.12);
    color: var(--sc-primary-dark);
}

.sc-preview-stage.wbbt-mode .sc-main-preview {
    background: #fff;
    border: 1px solid rgba(0, 0, 0, 0.08);
    border-radius: 12px;
}

.sc-tips {
    margin-top: 20px;
    padding: 14px 16px;
    border-radius: 14px;
    background: rgba(107, 161, 91, 0.06);
    border: 1px solid var(--sc-stroke);
}

.sc-tips h3 {
    margin: 0 0 8px;
    font-size: 13px;
    font-weight: 900;
}

.sc-tips ul {
    margin: 0;
    padding-left: 18px;
    font-size: 12px;
    line-height: 1.75;
    color: var(--sc-muted);
}

/* ── Result layout ── */
.sc-result-layout {
    display: grid;
    grid-template-columns: minmax(200px, 1fr) minmax(280px, 1.1fr);
    gap: 16px;
    min-height: 460px;
}

.sc-preview-stage {
    border-radius: 16px;
    border: 1px solid var(--sc-stroke);
    background:
        radial-gradient(circle at 50% 40%, rgba(107, 161, 91, 0.08), transparent 60%),
        var(--sc-surface-strong);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    min-height: 320px;
}

.sc-preview-empty {
    text-align: center;
    padding: 24px;
    color: var(--sc-muted);
}

.sc-empty-icon {
    width: 72px;
    height: 72px;
    margin: 0 auto 14px;
    border-radius: 18px;
    border: 1px dashed var(--sc-stroke-strong);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    font-family: "KaiTi", "STKaiti", serif;
    color: rgba(107, 161, 91, 0.45);
    background: rgba(255, 255, 255, 0.4);
}

html[data-theme="dark"] .sc-empty-icon {
    background: rgba(255, 255, 255, 0.04);
}

.sc-preview-empty p {
    margin: 0;
    font-size: 13px;
}

.sc-main-preview {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    padding: 20px;
}

.sc-main-preview[hidden] { display: none !important; }

.sc-preview-empty[hidden] { display: none !important; }

.sc-result-side {
    display: flex;
    flex-direction: column;
    min-height: 320px;
}

.sc-result-placeholder {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 24px;
    border-radius: 16px;
    border: 1px dashed var(--sc-stroke);
    background: rgba(107, 161, 91, 0.03);
    color: var(--sc-muted);
}

.sc-result-placeholder p {
    margin: 0;
    font-size: 15px;
    font-weight: 800;
    color: var(--sc-text);
}

.sc-result-placeholder span {
    margin-top: 6px;
    font-size: 12px;
}

.sc-result-placeholder[hidden] { display: none !important; }

.sc-result-block[hidden] { display: none !important; }

.sc-result-block {
    animation: scFadeIn 0.35s ease;
}

@keyframes scFadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

.sc-result-hero {
    display: flex;
    gap: 16px;
    padding: 18px;
    border-radius: 16px;
    background: linear-gradient(135deg, rgba(107, 161, 91, 0.14), rgba(139, 156, 124, 0.08));
    border: 1px solid var(--sc-stroke-strong);
    margin-bottom: 16px;
}

.sc-hero-label {
    display: block;
    font-size: 11px;
    font-weight: 800;
    color: var(--sc-muted);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin-bottom: 8px;
}

.sc-top-char {
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 16px;
    background: var(--sc-surface-strong);
    border: 1px solid var(--sc-stroke);
    font-size: 44px;
    font-family: "KaiTi", "STKaiti", "SimSun", serif;
    font-weight: 700;
    box-shadow: var(--sc-shadow-soft);
}

.sc-hero-right {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.sc-confidence {
    font-size: 32px;
    font-weight: 900;
    line-height: 1;
    color: var(--sc-primary);
}

.sc-confidence-label {
    font-size: 11px;
    font-weight: 700;
    color: var(--sc-muted);
    margin-top: 4px;
}

.sc-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 10px;
}

.sc-tag {
    padding: 4px 11px;
    border-radius: 999px;
    font-size: 11px;
    font-weight: 800;
}

.sc-tag-script {
    background: rgba(91, 123, 184, 0.14);
    color: #4a6494;
}

.sc-tag-domain {
    background: rgba(224, 181, 43, 0.16);
    color: #8a6d12;
}

html[data-theme="dark"] .sc-tag-script { color: #9bb8e8; }
html[data-theme="dark"] .sc-tag-domain { color: #e0c55a; }

.sc-candidates-title {
    margin: 0 0 10px;
    font-size: 13px;
    font-weight: 900;
}

.sc-candidates {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.sc-candidate {
    display: grid;
    grid-template-columns: 28px 44px 1fr auto;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border-radius: 12px;
    border: 1px solid var(--sc-stroke);
    background: var(--sc-surface-strong);
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.sc-candidate:hover {
    transform: translateX(2px);
    box-shadow: var(--sc-shadow-soft);
}

.sc-candidate.is-top {
    border-color: rgba(107, 161, 91, 0.5);
    background: linear-gradient(90deg, rgba(107, 161, 91, 0.12), rgba(107, 161, 91, 0.04));
}

.sc-cand-rank {
    font-size: 11px;
    font-weight: 900;
    color: var(--sc-muted);
    text-align: center;
}

.sc-cand-char {
    font-size: 28px;
    font-family: "KaiTi", "STKaiti", serif;
    text-align: center;
    line-height: 1;
}

.sc-cand-bar-wrap {
    height: 8px;
    border-radius: 999px;
    background: rgba(0, 0, 0, 0.06);
    overflow: hidden;
}

html[data-theme="dark"] .sc-cand-bar-wrap {
    background: rgba(255, 255, 255, 0.08);
}

.sc-cand-bar {
    height: 100%;
    border-radius: 999px;
    background: linear-gradient(90deg, #6BA15B, #C5DBB3);
    transition: width 0.45s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.sc-cand-score {
    font-size: 12px;
    font-weight: 900;
    color: var(--sc-muted);
    min-width: 46px;
    text-align: right;
}

/* ── Loading overlay (fix: never use display:flex without [hidden] override) ── */
.sc-loading {
    position: absolute;
    inset: 0;
    z-index: 10;
    display: none;
    align-items: center;
    justify-content: center;
    background: rgba(244, 248, 242, 0.72);
    border-radius: var(--sc-radius);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
}

html[data-theme="dark"] .sc-loading {
    background: rgba(12, 16, 14, 0.78);
}

.sc-loading.is-active {
    display: flex;
}

.sc-loading-card {
    padding: 24px 32px;
    border-radius: 16px;
    background: var(--sc-surface-strong);
    border: 1px solid var(--sc-stroke);
    box-shadow: var(--sc-shadow);
    text-align: center;
}

.sc-loading-card p {
    margin: 12px 0 0;
    font-size: 14px;
    font-weight: 700;
    color: var(--sc-text);
}

.sc-spinner {
    width: 40px;
    height: 40px;
    margin: 0 auto;
    border: 3px solid rgba(107, 161, 91, 0.2);
    border-top-color: var(--sc-primary);
    border-radius: 50%;
    animation: scSpin 0.75s linear infinite;
}

@keyframes scSpin {
    to { transform: rotate(360deg); }
}

/* ── Toast ── */
.sc-toast {
    position: fixed;
    bottom: 28px;
    left: 50%;
    transform: translateX(-50%) translateY(12px);
    padding: 11px 20px;
    border-radius: 12px;
    background: rgba(24, 36, 28, 0.92);
    color: #fff;
    font-size: 13px;
    font-weight: 700;
    z-index: 100;
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.22);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s ease, transform 0.25s ease;
}

.sc-toast.is-visible {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
    pointer-events: auto;
}

@media (max-width: 1024px) {
    .sc-main {
        grid-template-columns: 1fr;
    }
    .sc-result-layout {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    .sc-container { padding: 10px; }
    .sc-topbar {
        flex-wrap: wrap;
        gap: 10px;
        padding: 10px 12px;
    }
    .sc-brand {
        min-width: 0;
        flex: 1 1 auto;
    }
    .sc-title { font-size: 17px; }
    .sc-subtitle-row {
        flex-wrap: wrap;
        gap: 6px;
    }
    .sc-pill {
        font-size: 10px;
        padding: 3px 8px;
    }
    .sc-topbar-actions {
        width: 100%;
        justify-content: flex-end;
    }
    .sc-link-btn {
        display: inline-flex;
        font-size: 12px;
        padding: 8px 12px;
    }
    .sc-panel {
        padding: 14px;
        border-radius: 16px;
    }
    .sc-panel-head h2 { font-size: 16px; }
    .sc-action-row {
        flex-direction: column;
    }
    .sc-primary-btn,
    .sc-secondary-btn {
        width: 100%;
        min-height: 44px;
    }
    .sc-result-layout {
        gap: 12px;
    }
    .sc-preview-stage {
        min-height: 180px;
    }
    .sc-top-char {
        font-size: 56px;
    }
    .sc-candidates li {
        padding: 10px 12px;
    }
    .sc-result-hero {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    .sc-tags { justify-content: center; }
}