/* ════════════════════════════════════════════════════════════════════════
   ReadLens H5 单词复习页 — 移动优先，沿用官网/学习页的 editorial 设计语言
   ════════════════════════════════════════════════════════════════════════ */

:root {
  --paper:        #f5f1e8;
  --paper-2:      #ece6d6;
  --paper-3:      #fbf9f3;
  --ink:          #1f1a14;
  --ink-2:        #5a5145;
  --ink-3:        #8a8071;
  --rule:         #d4cab5;
  --rule-soft:    #e3dccb;
  --accent:       #6e3982;
  --accent-2:     #582867;
  --accent-soft:  #ece0ee;
  --ok:           #3d6e3d;
  --ok-soft:      #e8f0e3;
  --err:          #9c2a2a;

  --serif: "Newsreader", "Noto Serif SC", Georgia, serif;
  --sans:  "IBM Plex Sans", -apple-system, "PingFang SC", sans-serif;
  --mono:  "IBM Plex Mono", "SF Mono", monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--sans);
  background: var(--paper);
  color: var(--ink);
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

.hidden { display: none !important; }

/* ── 顶栏 ── */
.rv-header {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 14px 18px 12px;
  border-bottom: 1px solid var(--rule);
}
.rv-brand {
  font-family: var(--mono);
  font-size: 11px; font-weight: 600;
  letter-spacing: 2.5px;
  color: var(--ink);
}
.rv-title {
  font-family: var(--serif);
  font-size: 14px;
  color: var(--ink-2);
}
.rv-logout {
  margin-left: auto;
  background: none; border: none;
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--ink-3);
  cursor: pointer;
  padding: 4px;
}

/* ── 主区 ── */
.rv-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  width: 100%;
  max-width: 480px;
  margin: 0 auto;
  padding: 22px 18px calc(22px + env(safe-area-inset-bottom));
}
.rv-screen {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.rv-h1 {
  font-family: var(--serif);
  font-size: 26px; font-weight: 600;
  margin-bottom: 8px;
}
.rv-sub {
  font-size: 14px;
  color: var(--ink-2);
  line-height: 1.6;
  margin-bottom: 22px;
}

/* ── 登录 ── */
.rv-form { display: flex; flex-direction: column; gap: 12px; }
.rv-form input {
  font-family: var(--sans);
  font-size: 16px;             /* ≥16px 防 iOS 聚焦自动放大 */
  padding: 13px 14px;
  background: var(--paper-3);
  border: 1px solid var(--rule);
  border-radius: 0;
  color: var(--ink);
  outline: none;
}
.rv-form input:focus { border-color: var(--accent); }
.rv-form button {
  font-family: var(--serif);
  font-size: 16px; font-weight: 600;
  letter-spacing: 4px;
  padding: 13px;
  background: var(--ink);
  color: var(--paper);
  border: none;
  cursor: pointer;
}
.rv-form button:disabled { opacity: 0.55; }
.rv-error {
  font-size: 13px;
  color: var(--err);
}

/* ── 加载 ── */
.rv-loading-text {
  margin: auto;
  font-family: var(--serif);
  font-style: italic;
  color: var(--ink-3);
}

/* ── 进度 ── */
.rv-progress-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}
.rv-progress-text {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink-3);
  white-space: nowrap;
}
.rv-progress-track {
  flex: 1;
  height: 2px;
  background: var(--rule-soft);
}
.rv-progress-bar {
  height: 100%;
  background: var(--accent);
  width: 0;
  transition: width .25s ease;
}

/* ── 卡片 ── */
.rv-card {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  background: var(--paper-3);
  border: 1px solid var(--rule);
  padding: 28px 22px;
  cursor: pointer;
  min-height: 320px;
  -webkit-tap-highlight-color: transparent;
}

.rv-card-front { text-align: center; }
.rv-word {
  font-family: var(--serif);
  font-size: 40px; font-weight: 600;
  word-break: break-word;
  margin-bottom: 10px;
}
.rv-count {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--accent-2);
  background: var(--accent-soft);
  display: inline-block;
  padding: 2px 10px;
  margin-bottom: 30px;
}
.rv-tap-hint {
  font-family: var(--serif);
  font-style: italic;
  font-size: 13px;
  color: var(--ink-3);
}

.rv-word-sm {
  font-family: var(--serif);
  font-size: 22px; font-weight: 600;
  margin-bottom: 12px;
}
.rv-def-short {
  font-family: var(--serif);
  font-size: 22px; font-weight: 600;
  color: var(--accent-2);
  margin-bottom: 8px;
}
.rv-def-detailed {
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-2);
  margin-bottom: 18px;
}
.rv-example {
  border-left: 3px solid var(--accent);
  background: var(--paper);
  padding: 12px 14px;
}
.rv-example-en {
  font-family: var(--serif);
  font-size: 14.5px;
  line-height: 1.55;
  margin-bottom: 6px;
}
.rv-example-en mark {
  background: var(--accent-soft);
  color: var(--accent-2);
  padding: 0 3px;
  font-weight: 600;
}
.rv-example-zh {
  font-size: 13px;
  color: var(--ink-2);
  line-height: 1.55;
}

/* ── 操作按钮 ── */
.rv-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 16px;
}
.rv-actions button {
  font-family: var(--serif);
  font-size: 16px; font-weight: 600;
  padding: 15px;
  border-radius: 0;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}
.rv-btn-again {
  background: transparent;
  border: 1px solid var(--ink);
  color: var(--ink);
}
.rv-btn-know {
  background: var(--ok-soft);
  border: 1px solid var(--ok);
  color: var(--ok);
}
.rv-btn-again:active { background: var(--paper-2); }
.rv-btn-know:active  { background: #d9e8d0; }

/* ── 完成 ── */
.rv-btn-primary {
  font-family: var(--serif);
  font-size: 16px; font-weight: 600;
  letter-spacing: 2px;
  padding: 14px 28px;
  background: var(--ink);
  color: var(--paper);
  border: none;
  cursor: pointer;
  align-self: flex-start;
}