/* SpeedReader — 沉浸式独立极速视认阅读器样式 */
:root {
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-pill: 9999px;
  --trans: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

/* 默认暗黑主题 */
[data-theme="dark"] {
  --bg: #0d0e15;
  --bg-subtle: #141622;
  --card: #1a1c2b;
  --card-border: #282b3f;
  --card-hover: #32364e;
  --text: #f1f3f9;
  --text-muted: #8b92a8;
  --accent: #8b5cf6;
  --accent-soft: rgba(139, 92, 246, 0.16);
  --accent-light: #a78bfa;
  --reticle: #ec4899;
  --reticle-soft: rgba(236, 72, 153, 0.2);
  --shadow: 0 10px 30px -5px rgba(0, 0, 0, 0.6);
}

/* 羊皮纸护眼主题 */
[data-theme="sepia"] {
  --bg: #f7f1e3;
  --bg-subtle: #ede3cb;
  --card: #e5dac0;
  --card-border: #d4c4a3;
  --card-hover: #c9b793;
  --text: #34281d;
  --text-muted: #7d6e5d;
  --accent: #b3541e;
  --accent-soft: rgba(179, 84, 30, 0.16);
  --accent-light: #c8682e;
  --reticle: #c0392b;
  --reticle-soft: rgba(192, 57, 43, 0.2);
  --shadow: 0 10px 30px -5px rgba(100, 70, 40, 0.15);
}

/* 墨黑 OLED 主题 */
[data-theme="black"] {
  --bg: #000000;
  --bg-subtle: #0c0c0c;
  --card: #121212;
  --card-border: #242424;
  --card-hover: #333333;
  --text: #ffffff;
  --text-muted: #6e6e6e;
  --accent: #10b981;
  --accent-soft: rgba(16, 185, 129, 0.18);
  --accent-light: #34d399;
  --reticle: #10b981;
  --reticle-soft: rgba(16, 185, 129, 0.3);
  --shadow: 0 10px 30px -5px rgba(0, 0, 0, 0.9);
}

/* 清新明亮主题 */
[data-theme="light"] {
  --bg: #f8fafc;
  --bg-subtle: #f1f5f9;
  --card: #ffffff;
  --card-border: #e2e8f0;
  --card-hover: #cbd5e1;
  --text: #0f172a;
  --text-muted: #64748b;
  --accent: #3b82f6;
  --accent-soft: rgba(59, 130, 246, 0.14);
  --accent-light: #60a5fa;
  --reticle: #ef4444;
  --reticle-soft: rgba(239, 68, 68, 0.2);
  --shadow: 0 10px 30px -5px rgba(0, 0, 0, 0.08);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  transition: background-color var(--trans), color var(--trans);
  overflow-x: hidden;
}

/* 顶部极简导航 */
.sr-topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 960px;
  margin: 0 auto;
  padding: 20px 20px 10px;
}

.sr-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
  text-decoration: none;
  color: var(--text);
}

.sr-logo span.badge {
  font-size: 0.72rem;
  padding: 2px 7px;
  border-radius: var(--radius-pill);
  background: var(--accent-soft);
  color: var(--accent-light);
  font-weight: 700;
}

.sr-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.icon-btn {
  background: var(--card);
  border: 1px solid var(--card-border);
  color: var(--text);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  cursor: pointer;
  font-size: 0.95rem;
  transition: var(--trans);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.icon-btn:hover {
  background: var(--card-hover);
  border-color: var(--accent);
}

.icon-btn:active {
  transform: scale(0.95);
}

/* 主内容容器 */
.sr-container {
  max-width: 840px;
  margin: 10px auto 40px;
  padding: 0 20px;
}

/* 准备/配置卡片 */
.sr-setup-card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow);
  transition: var(--trans);
}

.sr-header {
  margin-bottom: 24px;
}

.sr-header h1 {
  font-size: 1.8rem;
  font-weight: 800;
  margin-bottom: 8px;
  letter-spacing: -0.02em;
}

.sr-header p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* 输入模式标签页 */
.sr-tabs {
  display: flex;
  gap: 10px;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--card-border);
  padding-bottom: 10px;
}

.sr-tab {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 0.95rem;
  font-weight: 700;
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: var(--trans);
}

.sr-tab:hover {
  color: var(--text);
  background: var(--bg-subtle);
}

.sr-tab.active {
  color: #fff;
  background: var(--accent);
}

.sr-tab-pane {
  display: none;
}

.sr-tab-pane.active {
  display: block;
}

/* URL 提取行 */
.sr-url-row {
  display: flex;
  gap: 10px;
  margin-bottom: 12px;
}

.sr-input {
  flex: 1;
  background: var(--bg);
  border: 1.5px solid var(--card-border);
  color: var(--text);
  padding: 12px 16px;
  border-radius: var(--radius-md);
  font-size: 0.96rem;
  outline: none;
  transition: var(--trans);
}

.sr-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.btn {
  background: var(--card);
  border: 1px solid var(--card-border);
  color: var(--text);
  padding: 12px 22px;
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  transition: var(--trans);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  white-space: nowrap;
}

.btn:hover {
  border-color: var(--accent);
  background: var(--card-hover);
}

.btn:active {
  transform: scale(0.96);
}

.btn.primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  color: #fff;
  border: none;
  box-shadow: 0 4px 14px var(--accent-soft);
}

.btn.primary:hover {
  opacity: 0.94;
  box-shadow: 0 6px 18px var(--accent-soft);
}

.sr-status {
  min-height: 24px;
  font-size: 0.88rem;
  margin-bottom: 14px;
}

.status-loading { color: var(--accent-light); font-weight: 600; }
.status-success { color: #10b981; font-weight: 600; }
.status-error { color: #ef4444; font-weight: 600; }

/* 文本粘贴域与拖拽 */
.sr-dropzone {
  position: relative;
  margin-bottom: 14px;
}

.sr-textarea {
  width: 100%;
  height: 180px;
  background: var(--bg);
  border: 1.5px dashed var(--card-border);
  border-radius: var(--radius-md);
  color: var(--text);
  padding: 16px;
  font-size: 0.95rem;
  line-height: 1.6;
  resize: vertical;
  outline: none;
  transition: var(--trans);
  font-family: inherit;
}

.sr-textarea:focus {
  border-color: var(--accent);
  border-style: solid;
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.sr-drop-hint {
  position: absolute;
  bottom: 12px;
  right: 14px;
  font-size: 0.8rem;
  color: var(--text-muted);
  pointer-events: none;
}

/* 精选文章卡片 */
.sr-presets-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 14px;
  margin-bottom: 16px;
}

.preset-card {
  background: var(--bg-subtle);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  padding: 16px;
  cursor: pointer;
  transition: var(--trans);
}

.preset-card:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.preset-card.selected {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.preset-card h4 {
  font-size: 0.98rem;
  margin-bottom: 6px;
  color: var(--text);
}

.preset-card p {
  font-size: 0.84rem;
  color: var(--text-muted);
  line-height: 1.45;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* 文章就绪预览区 */
.sr-preview-box {
  background: var(--bg-subtle);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  padding: 20px;
  margin-top: 20px;
}

.sr-preview-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
}

.sr-preview-title {
  font-size: 1.15rem;
  font-weight: 800;
}

.sr-preview-badge {
  font-size: 0.8rem;
  padding: 3px 9px;
  border-radius: var(--radius-pill);
  background: var(--accent-soft);
  color: var(--accent-light);
  font-weight: 700;
}

.sr-preview-excerpt {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 16px;
  line-height: 1.5;
}

.sr-params-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  padding: 14px 0;
  border-top: 1px solid var(--card-border);
  border-bottom: 1px solid var(--card-border);
  margin-bottom: 18px;
}

.sr-param-label {
  display: block;
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.wpm-chips {
  display: flex;
  gap: 6px;
}

.wpm-chip {
  background: var(--card);
  border: 1px solid var(--card-border);
  color: var(--text-muted);
  padding: 5px 12px;
  border-radius: var(--radius-pill);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--trans);
}

.wpm-chip:hover {
  color: var(--text);
  border-color: var(--accent);
}

.wpm-chip.active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.eta-highlight {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--accent-light);
}

/* ==========================================================================
   RSVP 全屏视认播放大厅
   ========================================================================== */
.sr-stage {
  position: fixed;
  inset: 0;
  background: var(--bg);
  z-index: 1000;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 24px 32px;
  transition: background-color var(--trans);
}

.stage-topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.stage-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-muted);
  max-width: 50vw;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.stage-hud {
  display: flex;
  align-items: center;
  gap: 12px;
}

.hud-pill {
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  background: var(--card);
  border: 1px solid var(--card-border);
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--text);
}

/* ORP (Optimal Recognition Point) 核心瞄准视域 */
.stage-center {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 100%;
  max-width: 800px;
  margin: 0 auto;
  user-select: none;
}

.orp-reticle-line {
  width: 2px;
  height: 22px;
  background: var(--reticle);
  border-radius: 2px;
  box-shadow: 0 0 10px var(--reticle-soft);
}

.orp-display {
  display: flex;
  align-items: baseline;
  justify-content: center;
  width: 100%;
  min-height: 120px;
  font-size: clamp(2.8rem, 9vw, 5.2rem);
  font-weight: 800;
  line-height: 1.2;
  margin: 10px 0;
}

.orp-left {
  flex: 1;
  text-align: right;
  color: var(--text);
}

.orp-center {
  color: var(--reticle);
  position: relative;
  padding: 0 2px;
  text-shadow: 0 0 20px var(--reticle-soft);
}

.orp-right {
  flex: 1;
  text-align: left;
  color: var(--text);
}

/* 播放器底部控制与进度 */
.stage-bottom {
  max-width: 800px;
  width: 100%;
  margin: 0 auto;
}

.sr-progress-track {
  width: 100%;
  height: 6px;
  background: var(--bg-subtle);
  border-radius: var(--radius-pill);
  cursor: pointer;
  position: relative;
  overflow: hidden;
  margin-bottom: 16px;
}

.sr-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--reticle));
  width: 0%;
  transition: width 0.08s linear;
}

.stage-controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.counter-text {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-muted);
}

.controls-mid {
  display: flex;
  align-items: center;
  gap: 12px;
}

.wpm-adjuster {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 800;
  font-size: 0.95rem;
}

.stage-tip {
  text-align: center;
  font-size: 0.84rem;
  color: var(--text-muted);
  margin-top: 14px;
}

.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(30px);
  background: var(--card);
  border: 1px solid var(--card-border);
  color: var(--text);
  padding: 10px 20px;
  border-radius: var(--radius-pill);
  font-weight: 700;
  font-size: 0.9rem;
  box-shadow: var(--shadow);
  opacity: 0;
  pointer-events: none;
  transition: 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  z-index: 9999;
}

.toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

@media (max-width: 640px) {
  .sr-stage {
    padding: 16px;
  }
  .stage-controls {
    justify-content: center;
  }
}