/* ═══ Survey Page — Unified Dark Theme ═══ */
.survey-page {
    /* 兼容现有 sv-* 类；颜色来源统一为公共 vars.css。 */
    --sv-bg: var(--color-bg);
    --sv-card: var(--color-surface);
    --sv-card-hover: var(--color-surface-raised);
    --sv-card-active: var(--color-surface-raised);
    --sv-accent: var(--color-primary);
    --sv-accent-dim: rgb(214 179 94 / 0.12);
    --sv-text: var(--color-text);
    --sv-text-dim: var(--color-text-secondary);
    --sv-text-muted: var(--color-text-muted);
    --sv-border: var(--color-border);
    --sv-gold: var(--color-primary);
    --sv-radius: 16px;
    --sv-font: var(--font-family, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif);
}

.survey-page *, .survey-page *::before, .survey-page *::after { margin:0; padding:0; box-sizing:border-box; }

.survey-page {
    font-family: var(--sv-font);
    background: var(--sv-bg);
    color: var(--sv-text);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

.survey-page #survey-app {
    max-width: 480px;
    margin: 0 auto;
    padding: 0 16px 32px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ═══ Progress ═══ */
.survey-page .sv-progress {
    position: sticky;
    top: 0;
    z-index: 100;
    height: 3px;
    background: var(--sv-border);
    margin: 0 -16px;
}
.survey-page .sv-progress__bar {
    height: 100%;
    background: var(--color-primary);
    border-radius: 0 2px 2px 0;
    transition: width 0.2s cubic-bezier(0.16,1,0.3,1);
}

/* ═══ Question Screen ═══ */
.survey-page .sv-q {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 32px 0 24px;
    animation: svFadeIn 0.2s ease;
}

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

.survey-page .sv-q__step {
    font-size: 12px;
    font-weight: 600;
    color: var(--sv-accent);
    letter-spacing: 1.5px;
    text-transform: uppercase;
    margin-bottom: 12px;
}

.survey-page .sv-q__title {
    font-size: 20px;
    font-weight: 600;
    line-height: 1.3;
    color: var(--sv-text);
    margin-bottom: 8px;
}

.survey-page .sv-q__subtitle {
    font-size: 14px;
    color: var(--sv-text-dim);
    line-height: 1.5;
    margin-bottom: 24px;
}

/* ═══ Option Cards ═══ */
.survey-page .sv-options {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.survey-page .sv-opt {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px;
    background: var(--sv-card);
    border: 1px solid var(--sv-border);
    border-radius: var(--sv-radius);
    cursor: pointer;
    transition: all 0.2s ease;
    -webkit-tap-highlight-color: transparent;
}

.survey-page .sv-opt:hover {
    background: var(--sv-card-hover);
    border-color: var(--color-border);
}

.survey-page .sv-opt:active {
    transform: scale(0.985);
}

.survey-page .sv-opt.selected {
    background: var(--sv-accent-dim);
    border-color: var(--sv-accent);
}

.survey-page .sv-opt__radio {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    border: 2px solid var(--sv-text-muted);
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

.survey-page .sv-opt.selected .sv-opt__radio {
    border-color: var(--sv-accent);
    background: var(--sv-accent);
}

.survey-page .sv-opt.selected .sv-opt__radio::after {
    content: '';
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--sv-bg);
}

.survey-page .sv-opt__label {
    font-size: 14px;
    font-weight: 500;
    color: var(--sv-text);
    line-height: 1.4;
}

.survey-page .sv-opt.selected .sv-opt__label {
    color: var(--sv-accent);
}

.survey-page .sv-opt__tag {
    font-size: 12px;
    color: var(--sv-text-muted);
    margin-left: auto;
    white-space: nowrap;
}

/* ═══ Results Screen ═══ */
.survey-page .sv-screen {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 32px 0;
}

.survey-page .sv-results__icon {
    font-size: 64px;
    margin-bottom: 24px;
    animation: none;
}



.survey-page .sv-results__title {
    font-size: 28px;
    font-weight: 600;
    color: var(--sv-gold);
    margin-bottom: 24px;
}

.survey-page .sv-results__amount {
    display: flex;
    align-items: baseline;
    gap: 4px;
    margin-bottom: 4px;
}

.survey-page .sv-results__currency {
    font-size: 28px;
    font-weight: 600;
    color: var(--sv-text-dim);
}

.survey-page .sv-results__number {
    font-size: 36px;
    font-weight: 600;
    font-family: inherit;
    color: var(--sv-text);
    letter-spacing: -1px;
}

.survey-page .sv-results__label {
    font-size: 14px;
    font-weight: 600;
    color: var(--sv-accent);
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 24px;
}

.survey-page .sv-results__desc {
    font-size: 14px;
    color: var(--sv-text-dim);
    line-height: 1.6;
    max-width: 340px;
    margin-bottom: 32px;
}

.survey-page .sv-results__note {
    font-size: 12px;
    color: var(--sv-text-muted);
    margin-top: 16px;
}

/* ═══ Buttons ═══ */
.survey-page .sv-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 12px 24px;
    border-radius: 10px;
    border: none;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    -webkit-tap-highlight-color: transparent;
    width: 100%;
    max-width: 340px;
}

.survey-page .sv-btn--primary {
    background: linear-gradient(135deg, #E0C477 0%, #C9A34B 100%);
    color: var(--color-on-primary);
    box-shadow: none;
}
.survey-page .sv-btn--primary:hover { transform: translateY(-1px); box-shadow: none; }
.survey-page .sv-btn--primary:active { transform: scale(0.98); }
.survey-page .sv-btn--primary:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }

.survey-page .sv-btn--secondary {
    background: var(--sv-card);
    color: var(--sv-text);
    border: 1px solid var(--sv-border);
}

.survey-page .sv-btn__icon { font-size: 18px; }

/* ═══ Spinner ═══ */
.survey-page .sv-spinner {
    width: 48px;
    height: 48px;
    border: 3px solid var(--color-border);
    border-top-color: var(--sv-accent);
    border-radius: 50%;
    animation: svSpin 0.8s linear infinite;
    margin-bottom: 24px;
}
@keyframes svSpin { to { transform: rotate(360deg); } }

.survey-page .sv-claiming__text {
    font-size: 14px;
    color: var(--sv-text-dim);
}

/* ═══ Error ═══ */
.survey-page .sv-error__msg {
    font-size: 14px;
    color: var(--sv-text);
    line-height: 1.6;
    margin-bottom: 24px;
    max-width: 320px;
}

/* ═══ Multi-select ═══ */
.survey-page .sv-opt.multi.selected {
    background: var(--sv-accent-dim);
    border-color: var(--sv-accent);
}
.survey-page .sv-opt.multi .sv-opt__radio {
    border-radius: 6px;
}
.survey-page .sv-opt.multi.selected .sv-opt__radio {
    border-color: var(--sv-accent);
    background: var(--sv-accent);
}
.survey-page .sv-opt.multi.selected .sv-opt__radio::after {
    content: '✓';
    font-size: 12px;
    font-weight: 600;
    color: var(--color-on-primary);
    width: auto;
    height: auto;
    border-radius: 0;
    background: none;
}

.survey-page .sv-multi-next {
    margin-top: 16px;
    padding: 12px;
    border-radius: 10px;
    border: none;
    background: var(--sv-accent);
    color: var(--color-on-primary);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    width: 100%;
    transition: opacity 0.2s;
}
.survey-page .sv-multi-next:disabled { opacity: 0.3; cursor: not-allowed; }
/* 独立页面布局及交互变体 */
.survey-page #survey-app {
  min-height: 100dvh;
  padding-bottom: calc(32px + env(safe-area-inset-bottom, 0px));
}

.survey-page #sv-questions {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.survey-page .sv-q__title {
  line-height: 28px;
}

.survey-page .sv-opt__label {
  min-width: 0;
  overflow-wrap: anywhere;
}

.survey-page .sv-opt__tag {
  color: var(--color-text-secondary);
}

.survey-page .sv-results__number {
  font-variant-numeric: tabular-nums;
  line-height: 48px;
}

.survey-page .sv-btn {
  min-height: 48px;
}

.survey-page .sv-multi-next {
  min-height: 44px;
}

.survey-page .sv-spinner--inline {
  width: 20px;
  height: 20px;
  margin: 0;
  border-width: 2px;
}

.survey-page .sv-error__msg {
  white-space: pre-line;
  overflow-wrap: anywhere;
}

.survey-page .sv-btn:focus-visible,
.survey-page .sv-multi-next:focus-visible {
  outline: 2px solid var(--color-blue);
  outline-offset: 4px;
}

@media (max-width: 359px) {
  .survey-page .sv-opt {
    flex-wrap: wrap;
  }

  .survey-page .sv-opt__label {
    flex: 1;
  }

  .survey-page .sv-opt__tag {
    margin-left: 32px;
    white-space: normal;
  }
}

@media (prefers-reduced-motion: reduce) {
  .survey-page .sv-q {
    animation: none;
  }

  .survey-page .sv-progress__bar,
  .survey-page .sv-opt,
  .survey-page .sv-btn {
    transition: none;
  }
}
/* ═══ Welcome Screen ═══ */

.survey-page .sv-welcome {
    padding: 48px 0 32px;
    gap: 0;
}

.survey-page .sv-welcome__badge {
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 3px;
    color: var(--sv-accent);
    border: 1px solid rgba(214, 179, 94, 0.2);
    background: rgba(214, 179, 94, 0.06);
    padding: 6px 16px;
    border-radius: 20px;
    margin-bottom: 32px;
}

.survey-page .sv-welcome__headline {
    font-size: 28px;
    font-weight: 700;
    line-height: 1.25;
    color: var(--sv-text);
    margin-bottom: 16px;
}

.survey-page .sv-welcome__gold {
    color: var(--sv-gold);
}

.survey-page .sv-welcome__desc {
    font-size: 14px;
    color: var(--sv-text-dim);
    line-height: 1.65;
    max-width: 340px;
    margin-bottom: 36px;
}

.survey-page .sv-welcome__meta {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 36px;
    padding: 16px 24px;
    background: var(--sv-card);
    border: 1px solid var(--sv-border);
    border-radius: 14px;
    width: 100%;
    max-width: 320px;
    justify-content: center;
}

.survey-page .sv-welcome__meta-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.survey-page .sv-welcome__meta-num {
    font-size: 20px;
    font-weight: 700;
    color: var(--sv-text);
    font-family: var(--font-mono, 'SF Mono', monospace);
}

.survey-page .sv-welcome__meta-label {
    font-size: 11px;
    color: var(--sv-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.survey-page .sv-welcome__meta-divider {
    width: 1px;
    height: 32px;
    background: var(--sv-border);
}

.survey-page .sv-welcome__footer {
    font-size: 12px;
    color: var(--sv-text-muted);
    margin-top: 20px;
    max-width: 300px;
    line-height: 1.5;
}
/* ★ 解除 base.css 的全屏锁定，允许问卷页滚动 */
html:has(body.survey-page),
html:has(body.survey-page) body.survey-page {
    height: auto !important;
    min-height: 100% !important;
    overflow-y: auto !important;
    overflow-x: hidden !important;
    position: static !important;
}
body.survey-page {
    height: auto !important;
    min-height: 100vh;
    overflow-y: visible !important;
    position: static !important;
}