/* ============================
   Lifeline: Silent Night — 样式
   终端风格 + 移动端适配
   ============================ */

/* --- CSS 变量 --- */
:root {
  --bg: #0a0a0f;
  --bg-panel: #111118;
  --bg-message: #161620;
  --text: #c8c8d0;
  --text-dim: #6a6a78;
  --text-bright: #e8e8f0;
  --accent: #e63946;
  --accent-glow: #ff6b6b;
  --gold: #f0c060;
  --cyan: #4ec9b0;
  --magenta: #c586c0;
  --green: #6a9955;
  --border: #2a2a38;
  --btn-bg: #1e1e2e;
  --btn-hover: #2a2a40;
  --font-mono: "SF Mono", "Cascadia Code", "Consolas", "Courier New", monospace;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
  --max-width: 720px;
  --msg-padding: 14px 18px;
  --radius: 8px;
  --font-base: 15px;
}

/* --- 基础重置 --- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: var(--font-base);
  -webkit-text-size-adjust: 100%;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  line-height: 1.65;
  min-height: 100dvh;
  overflow: hidden;
}

/* --- 主布局 --- */
#app {
  display: flex;
  flex-direction: column;
  height: 100dvh;
  max-width: var(--max-width);
  margin: 0 auto;
  position: relative;
}

/* --- 顶部状态栏 --- */
#top-bar {
  flex-shrink: 0;
  padding: calc(8px + env(safe-area-inset-top, 0px)) 16px 8px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-panel);
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 40px;
}

#status-indicator {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-dim);
  letter-spacing: 0.04em;
}

#status-indicator.connected {
  color: var(--green);
}

#status-indicator.connected::before {
  content: "● ";
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.3;
  }
}

/* --- 语言切换器 --- */
#lang-switcher {
  position: relative;
}

#lang-btn {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 5px;
  color: var(--text-dim);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  padding: 5px 10px;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s, background 0.15s;
}

#lang-btn:hover {
  color: var(--text-bright);
  border-color: var(--text-dim);
  background: rgba(255, 255, 255, 0.04);
}

#lang-dropdown {
  position: absolute;
  right: 0;
  top: 100%;
  margin-top: 4px;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
  z-index: 50;
  min-width: 110px;
}

#lang-dropdown.hidden {
  display: none;
}

.lang-option {
  display: block;
  width: 100%;
  padding: 8px 14px;
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--border);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 0.82rem;
  cursor: pointer;
  text-align: left;
  transition: background 0.12s;
}

.lang-option:last-child {
  border-bottom: none;
}

.lang-option:hover {
  background: var(--btn-hover);
}

.lang-option.active {
  color: var(--accent);
  font-weight: bold;
}

/* --- 顶部操作栏 --- */
#top-actions {
  display: flex;
  align-items: center;
  gap: 6px;
}

#settings-btn {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 5px;
  color: var(--text-dim);
  font-size: 0.9rem;
  padding: 5px 8px;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s, background 0.15s;
  line-height: 1;
}

#settings-btn:hover {
  color: var(--text-bright);
  border-color: var(--text-dim);
  background: rgba(255, 255, 255, 0.04);
}

/* --- 设置面板 --- */
#settings-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  z-index: 110;
  display: flex;
  align-items: center;
  justify-content: center;
}

#settings-overlay.hidden {
  display: none;
}

.settings-panel {
  width: 90%;
  max-width: 380px;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px 20px 18px;
  animation: fade-in 0.2s ease-out;
}

/* --- 设置面板 Tab 切换 --- */
.settings-tabs {
  display: flex;
  border-bottom: 1px solid var(--border);
  margin-bottom: 18px;
}

.settings-tab {
  flex: 1;
  padding: 8px 0;
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--text-dim);
  font-size: 0.9rem;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s;
}

.settings-tab:hover {
  color: var(--text);
}

.settings-tab.active {
  color: var(--text-bright);
  border-bottom-color: var(--accent);
}

.settings-tab-content {
  display: none;
}

.settings-tab-content.active {
  display: block;
}

/* 联系我 Tab */
.contact-image-wrap {
  text-align: center;
}

.contact-image-wrap img {
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: 8px;
}

.settings-group {
  margin-bottom: 16px;
}

.settings-label {
  display: block;
  font-size: 0.75rem;
  color: var(--text-dim);
  margin-bottom: 6px;
}

.settings-row {
  display: flex;
  gap: 6px;
}

.settings-row button {
  flex: 1;
  padding: 8px 6px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--btn-bg);
  color: var(--text-dim);
  font-size: 0.82rem;
  cursor: pointer;
  transition: all 0.15s;
}

.settings-row button:hover {
  color: var(--text);
  border-color: var(--text-dim);
}

.settings-row button.active {
  color: var(--accent);
  border-color: var(--accent);
  background: rgba(230, 57, 70, 0.1);
}

.settings-divider {
  height: 1px;
  background: var(--border);
  margin: 18px 0;
}

.settings-restart-btn {
  display: block;
  width: 100%;
  padding: 12px;
  border: 1px solid var(--accent);
  border-radius: 8px;
  background: transparent;
  color: var(--accent);
  font-size: 0.9rem;
  cursor: pointer;
  transition: background 0.15s;
  margin-bottom: 8px;
}

/* --- 重新开始按钮 --- */
.settings-restart-btn:hover {
  background: rgba(230, 57, 70, 0.1);
}

.settings-restart-btn.danger {
  background: var(--accent);
  color: #fff;
}

.settings-close-btn {
  display: block;
  width: 100%;
  padding: 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--btn-bg);
  color: var(--text-dim);
  font-size: 0.85rem;
  cursor: pointer;
  transition: color 0.15s;
}

.settings-close-btn:hover {
  color: var(--text);
}

/* --- 字体大小预设（rem 相对单位，兼容响应式） --- */
/* --- 免责声明 --- */
.disclaimer {
  flex-shrink: 0;
  padding: 4px 12px;
  text-align: center;
  font-size: 0.78rem;
  color: rgba(255, 255, 255, 0.2);
  letter-spacing: 0.04em;
  line-height: 1.5;
}

.settings-disclaimer {
  text-align: center;
  font-size: 0.7rem;
  color: rgba(255, 255, 255, 0.3);
  margin-top: 14px;
  line-height: 1.5;
}

.setup-disclaimer {
  text-align: center;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.4);
  margin-top: 32px;
  line-height: 1.6;
}

/* --- 字体大小预设（rem 相对单位，兼容响应式） --- */
html.font-small {
  font-size: 0.8125rem;
}

html.font-medium {
  font-size: 1rem;
}

html.font-large {
  font-size: 1.1875rem;
}

/* --- 禁用动画 --- */
html.no-anim .message {
  animation: none;
}
html.no-anim .delay-indicator {
  animation: none;
}
html.no-anim .settings-panel {
  animation: none;
}

/* --- 消息区域 --- */
#message-area {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 16px 12px;
  scroll-behavior: smooth;
  -webkit-overflow-scrolling: touch;
}

#message-area::-webkit-scrollbar {
  width: 4px;
}

#message-area::-webkit-scrollbar-track {
  background: transparent;
}

#message-area::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 2px;
}

/* --- 单条消息 --- */
.message {
  margin-bottom: 14px;
  padding: var(--msg-padding);
  background: var(--bg-message);
  border-radius: var(--radius);
  border-left: 2px solid var(--border);
  animation: fade-in 0.3s ease-out;
  word-break: break-word;
}

.message.narration {
  border-left-color: var(--text-dim);
  opacity: 0.85;
  font-style: italic;
}

.message.shep {
  border-left-color: var(--cyan);
}
.message.don {
  border-left-color: var(--cyan);
}
.message.bos {
  border-left-color: var(--cyan);
}
.message.aries {
  border-left-color: var(--magenta);
}
.message.doc {
  border-left-color: var(--green);
}
.message.mari {
  border-left-color: var(--magenta);
}
.message.green {
  border-left-color: #4caf50;
}
.message.taylor {
  border-left-color: var(--accent);
}

.message .speaker {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 4px;
  display: block;
}

.message .speaker.shep,
.message .speaker.don,
.message .speaker.bos {
  color: var(--cyan);
}
.message .speaker.aries {
  color: var(--magenta);
}
.message .speaker.doc {
  color: var(--green);
}
.message .speaker.mari {
  color: var(--magenta);
}
.message .speaker.green {
  color: #4caf50;
}
.message .speaker.taylor {
  color: var(--accent-glow);
}

.message .content {
  line-height: 1.7;
}

.message .content i,
.message .content em {
  font-style: italic;
  color: var(--text-dim);
}

/* --- 系统消息 --- */
.message.system {
  border-left-color: var(--gold);
  background: #1a1a10;
}

.message.system .content {
  color: var(--gold);
  font-family: var(--font-mono);
  font-size: 0.8rem;
}

/* --- 延时提示 --- */
.delay-indicator {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  margin-bottom: 14px;
  color: var(--gold);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  animation: fade-in 0.5s ease-out;
}

.delay-indicator .spinner {
  width: 14px;
  height: 14px;
  border: 2px solid var(--border);
  border-top-color: var(--gold);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

@keyframes fade-in {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* --- 选项区域 --- */
#choice-area {
  flex-shrink: 0;
  padding: 10px 12px calc(14px + env(safe-area-inset-bottom, 0px));
  border-top: 1px solid var(--border);
  background: var(--bg-panel);
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

#choice-area:empty {
  display: none;
}

.choice-btn {
  flex: 1;
  min-width: 120px;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--btn-bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
  text-align: center;
  line-height: 1.4;
}

.choice-btn:hover,
.choice-btn:active {
  background: var(--btn-hover);
  border-color: var(--accent);
  color: var(--text-bright);
}

.choice-btn:active {
  transform: scale(0.98);
}

.choice-btn .key-hint {
  display: inline-block;
  margin-right: 4px;
  padding: 1px 5px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 3px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-dim);
  vertical-align: middle;
}

/* 手机端隐藏键盘提示 */
@media (max-width: 480px) {
  .choice-btn .key-hint {
    display: none;
  }
}

/* --- 文本输入区域 --- */
#input-area {
  flex-shrink: 0;
  padding: 10px 12px calc(14px + env(safe-area-inset-bottom, 0px));
  border-top: 1px solid var(--border);
  background: var(--bg-panel);
  display: flex;
  gap: 8px;
}

#text-input {
  flex: 1;
  padding: 11px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-message);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 0.9rem;
  outline: none;
  transition: border-color 0.15s;
}

#text-input:focus {
  border-color: var(--accent);
}

#input-submit {
  padding: 11px 20px;
  border: 1px solid var(--accent);
  border-radius: var(--radius);
  background: var(--accent);
  color: #fff;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  cursor: pointer;
  transition: opacity 0.15s;
  white-space: nowrap;
}

#input-submit:hover,
#input-submit:active {
  opacity: 0.85;
}

/* --- 设置遮罩 --- */
#setup-overlay {
  position: fixed;
  inset: 0;
  background: var(--bg);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
}

#setup-overlay.hidden {
  display: none;
}

.setup-container {
  width: 100%;
  max-width: 500px;
  padding: 24px 20px;
}

#setup-content {
  text-align: center;
}

.setup-title {
  font-family: var(--font-mono);
  font-size: 1.6rem;
  color: var(--accent);
  margin-bottom: 8px;
}

.setup-subtitle {
  font-size: 0.85rem;
  color: var(--text-dim);
  margin-bottom: 28px;
  line-height: 1.6;
}

.setup-group {
  margin-bottom: 24px;
  text-align: left;
}

.setup-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 8px;
  display: block;
}

.setup-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.setup-btn {
  flex: 1;
  min-width: 80px;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--btn-bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
  text-align: center;
}

.setup-btn:hover,
.setup-btn.selected {
  background: var(--btn-hover);
  border-color: var(--accent);
  color: var(--text-bright);
}

.setup-input {
  width: 100%;
  padding: 11px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-message);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 0.95rem;
  outline: none;
}

.setup-input:focus {
  border-color: var(--accent);
}

.setup-confirm {
  display: block;
  width: 100%;
  margin-top: 24px;
  padding: 14px;
  border: none;
  border-radius: var(--radius);
  background: var(--accent);
  color: #fff;
  font-family: var(--font-sans);
  font-size: 1rem;
  cursor: pointer;
  transition: opacity 0.15s;
}

.setup-confirm:hover {
  opacity: 0.85;
}

/* --- 通讯接入动画 --- */
#incoming-overlay {
  position: fixed;
  inset: 0;
  background: var(--bg);
  z-index: 99;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
}

#incoming-stars {
  font-family: var(--font-mono);
  font-size: 1.2rem;
  color: var(--accent);
  letter-spacing: 0.1em;
  margin-bottom: 20px;
  min-height: 1.5em;
}

#incoming-text {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--text-dim);
  opacity: 0;
  transition: opacity 0.5s;
}

#incoming-text.visible {
  opacity: 1;
}

/* --- 游戏结束提示 --- */
.game-over-message {
  text-align: center;
  padding: 20px;
}

.game-over-message .end-title {
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--text-dim);
  margin-bottom: 20px;
}

/* =======================
   响应式适配
   ======================= */

/* 手机设备 */
@media (max-width: 480px) {
  html {
    font-size: 14px;
  }

  #message-area {
    padding: 10px 8px;
  }

  .message {
    padding: 10px 12px;
    margin-bottom: 10px;
    border-radius: 6px;
  }

  .choice-btn {
    padding: 10px 12px;
    font-size: 0.85rem;
  }

  #choice-area {
    padding: 8px 6px calc(10px + env(safe-area-inset-bottom, 0px));
    gap: 6px;
  }
}

/* 平板设备 */
@media (min-width: 481px) and (max-width: 768px) {
  html {
    font-size: 15px;
  }

  #app {
    max-width: 100%;
  }
}

/* 桌面设备 */
@media (min-width: 769px) {
  #app {
    border-left: 1px solid var(--border);
    border-right: 1px solid var(--border);
    box-shadow: 0 0 60px rgba(0, 0, 0, 0.5);
  }
}