/* ==========================================================================
   男友力对话 · BF-OS —— 公共样式
   风格：电光青蓝赛博暗黑（近黑底 + 电光青/电蓝 + 电橙点缀 + 网格/扫描线）
   布局：对话工作台（IM 式）—— 左细栏（品牌/关系阶段/导航）+ 中央聊天控制台。
   与「情场高手/撩妹/相亲/浪漫情话」的风格与布局刻意彻底区分。
   ========================================================================== */

/* ------------------------------ 设计变量 ------------------------------ */
:root {
  --bg-0: #06080f;
  --bg-1: #0a0f1c;
  --panel: rgba(13, 22, 42, .66);
  --panel-solid: #0e1424;

  --cyan: #22d3ee;
  --blue: #3b82f6;
  --orange: #f97316;
  --grad: linear-gradient(120deg, #22d3ee 0%, #38bdf8 40%, #3b82f6 100%);
  --grad-dim: linear-gradient(120deg, rgba(34,211,238,.20), rgba(59,130,246,.16));

  --ink: #dce8fb;
  --ink-2: #8ea6cc;
  --ink-3: #566a90;

  --line: rgba(56, 189, 248, .16);
  --line-strong: rgba(56, 130, 246, .42);

  --glow: 0 0 0 1px rgba(34,211,238,.22), 0 14px 40px rgba(14, 116, 190, .28);
  --glow-cyan: 0 0 20px rgba(34, 211, 238, .5);

  --r-lg: 16px;
  --r-md: 12px;
  --r-sm: 9px;
  --r-pill: 999px;

  --rail-w: clamp(220px, 20vw, 268px);

  --font: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', 'Cascadia Code', 'Consolas', ui-monospace, monospace;
}

/* ------------------------------ 基础 ------------------------------ */
*, *::before, *::after { box-sizing: border-box; }
/* hidden 必须真隐藏：下面 .landing/.chatview 有 display:flex 会覆盖 [hidden] 的 display:none */
[hidden] { display: none !important; }
html { height: 100%; }

body {
  margin: 0;
  height: 100vh; height: 100dvh;
  overflow: hidden;
  display: flex; flex-direction: column;
  font-family: var(--font);
  font-size: 15px; line-height: 1.7;
  color: var(--ink);
  background: var(--bg-0);
  -webkit-font-smoothing: antialiased;
}
a { color: var(--cyan); }
h1, h2, h3 { font-weight: 800; letter-spacing: .3px; }
::selection { background: rgba(34,211,238,.32); color: #fff; }

/* ------------------------------ 赛博背景 ------------------------------ */
.cyberbg { position: fixed; inset: 0; z-index: 0; pointer-events: none; overflow: hidden;
  background:
    radial-gradient(900px 520px at 82% -6%, rgba(34,211,238,.16), transparent 60%),
    radial-gradient(760px 480px at 6% 106%, rgba(59,130,246,.16), transparent 60%),
    linear-gradient(180deg, #06080f 0%, #070b16 60%, #05070e 100%);
}
.cyberbg .grid { position: absolute; inset: 0; opacity: .5;
  background-image:
    linear-gradient(rgba(56,189,248,.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(56,189,248,.06) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: radial-gradient(1200px 800px at 60% 0%, #000 30%, transparent 85%);
  -webkit-mask-image: radial-gradient(1200px 800px at 60% 0%, #000 30%, transparent 85%);
}
.cyberbg .scan { position: absolute; left: 0; right: 0; top: 0; height: 2px;
  background: linear-gradient(90deg, transparent, rgba(34,211,238,.55), transparent);
  box-shadow: 0 0 18px rgba(34,211,238,.5);
  animation: scan 6.5s linear infinite;
}
@keyframes scan { 0% { transform: translateY(0); opacity: 0; } 8% { opacity: 1; } 92% { opacity: 1; } 100% { transform: translateY(100vh); opacity: 0; } }

/* ============================================================
   控制台骨架
   ============================================================ */
.console { position: relative; z-index: 1; flex: 1 1 auto; min-height: 0; display: flex; }

/* ---------------- 左细栏 ---------------- */
.rail {
  flex: none; width: var(--rail-w); height: 100%; overflow-y: auto;
  display: flex; flex-direction: column; gap: 18px;
  padding: 18px 16px;
  background: rgba(8, 12, 22, .72);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  border-right: 1px solid var(--line);
}
.brand { display: inline-flex; align-items: center; gap: 11px; text-decoration: none; color: inherit; }
.brand-mark {
  display: grid; place-items: center; width: 42px; height: 42px; font-size: 21px;
  border-radius: 11px; background: var(--grad); color: #04121b; box-shadow: var(--glow-cyan);
}
.brand-text { display: flex; flex-direction: column; line-height: 1.1; }
.brand-text strong { font-size: 18px; color: #fff; letter-spacing: .5px; }
.brand-text em { font-style: normal; font-family: var(--font-mono); font-size: 11px; letter-spacing: 2px; color: var(--cyan); }

.rail-block { display: flex; flex-direction: column; gap: 9px; }
.rail-label {
  display: flex; align-items: baseline; justify-content: space-between; gap: 8px;
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 1px; text-transform: uppercase; color: var(--ink-3);
}
.rail-hint { font-family: var(--font); text-transform: none; letter-spacing: 0; font-size: 12px; color: var(--ink-2); }
.rail-hint b { color: var(--cyan); }

.state-chips { display: flex; flex-direction: column; gap: 7px; }
.state-chip {
  display: flex; align-items: center; gap: 9px; appearance: none; cursor: pointer; text-align: left;
  font-family: inherit; font-weight: 600; font-size: 13.5px; color: var(--ink-2);
  background: rgba(255,255,255,.03); border: 1px solid var(--line); border-radius: var(--r-sm); padding: 9px 12px;
  transition: color .16s, background .16s, border-color .16s, box-shadow .16s;
}
.state-chip::before { content: ""; flex: none; width: 7px; height: 7px; border-radius: 2px; background: var(--ink-3); transition: background .16s, box-shadow .16s; transform: rotate(45deg); }
.state-chip:hover { color: #fff; border-color: var(--line-strong); }
.state-chip.is-active { color: #04121b; background: var(--grad); border-color: transparent; box-shadow: var(--glow-cyan); font-weight: 700; }
.state-chip.is-active::before { background: #04121b; }

.rail-nav { display: flex; flex-direction: column; gap: 7px; margin-top: auto; }
.rail-link {
  display: flex; align-items: center; gap: 9px; appearance: none; cursor: pointer; text-decoration: none;
  font-family: inherit; font-weight: 600; font-size: 13.5px; color: var(--cyan);
  background: rgba(34,211,238,.06); border: 1px solid var(--line-strong); border-radius: var(--r-sm); padding: 10px 12px;
  transition: transform .15s, box-shadow .15s, background .15s;
}
.rail-link:hover { transform: translateY(-1px); background: rgba(34,211,238,.14); box-shadow: var(--glow-cyan); }
.rail-foot { font-size: 10.5px; color: var(--ink-3); line-height: 1.7; }
.rail-foot p { margin: 0; }

/* ---------------- 中央控制台 ---------------- */
.main-col { flex: 1 1 auto; min-width: 0; display: flex; flex-direction: column; min-height: 0; }
.stage { flex: 1 1 auto; min-height: 0; display: flex; flex-direction: column; }
.landing, .chatview { flex: 1 1 auto; min-height: 0; display: flex; flex-direction: column; }

/* 顶部状态条（控制台标题） */
.deck-head {
  flex: none; display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 12px clamp(14px, 3vw, 26px);
  border-bottom: 1px solid var(--line);
  font-family: var(--font-mono); font-size: 12px; color: var(--ink-3);
}
.deck-head .dot { display: inline-flex; align-items: center; gap: 7px; }
.deck-head .dot i { width: 8px; height: 8px; border-radius: 50%; background: var(--cyan); box-shadow: var(--glow-cyan); animation: pulse 1.8s ease-out infinite; }
@keyframes pulse { 0% { box-shadow: 0 0 0 0 rgba(34,211,238,.6); } 100% { box-shadow: 0 0 0 10px rgba(34,211,238,0); } }
.deck-head b { color: var(--cyan); }

/* 欢迎（空对话状态） */
.welcome-scroll { flex: 1 1 auto; min-height: 0; overflow-y: auto; padding: clamp(18px, 4vw, 40px) clamp(14px, 4vw, 40px) 20px; }
.welcome { max-width: 780px; margin: 0 auto; }
.coach-msg {
  display: flex; gap: 12px; align-items: flex-start; margin-bottom: 22px;
}
.coach-ava { flex: none; display: grid; place-items: center; width: 44px; height: 44px; font-size: 22px; background: var(--grad-dim); border: 1px solid var(--line-strong); border-radius: 12px; }
.coach-bubble { position: relative; padding: 14px 16px; background: var(--panel); border: 1px solid var(--line-strong); border-radius: 4px 14px 14px 14px; box-shadow: var(--glow); }
.coach-bubble .who { font-family: var(--font-mono); font-size: 11px; color: var(--cyan); letter-spacing: 1px; margin-bottom: 4px; }
.coach-bubble p { margin: 0; color: var(--ink); font-size: 14.5px; }
.coach-bubble b { color: var(--cyan); }

.welcome-title { margin: 0 0 6px; font-size: clamp(22px, 4vw, 32px); color: #fff; }
.welcome-title b { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; -webkit-text-fill-color: transparent; }
.welcome-sub { margin: 0 0 20px; color: var(--ink-2); font-size: 14px; }

/* 建议气泡（场景） */
.suggest-head { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; }
.suggest-title { font-family: var(--font-mono); font-size: 12px; letter-spacing: 1px; color: var(--ink-3); text-transform: uppercase; }
.cat-tabs { display: flex; flex-wrap: wrap; gap: 7px; margin-bottom: 16px; }
.cat-tab {
  appearance: none; cursor: pointer; font-family: inherit; font-weight: 600; font-size: 12.5px; color: var(--ink-2);
  background: rgba(255,255,255,.03); border: 1px solid var(--line); border-radius: var(--r-pill); padding: 6px 13px; transition: color .16s, background .16s, border-color .16s;
}
.cat-tab:hover { color: #fff; border-color: var(--line-strong); }
.cat-tab.is-active { color: #04121b; background: var(--grad); border-color: transparent; box-shadow: var(--glow-cyan); }

.starters { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 10px; }
.starter {
  display: flex; align-items: center; gap: 11px; text-align: left; cursor: pointer; font-family: inherit; color: var(--ink); position: relative;
  padding: 13px 14px; background: var(--panel); border: 1px solid var(--line); border-radius: var(--r-md);
  transition: transform .16s, box-shadow .16s, border-color .16s, background .16s;
}
.starter::before { content: ""; position: absolute; left: 0; top: 12px; bottom: 12px; width: 3px; border-radius: 3px; background: var(--grad); opacity: .8; }
.starter:hover { transform: translateY(-2px); border-color: var(--line-strong); box-shadow: var(--glow); background: rgba(34,211,238,.06); }
.starter-tag {
  flex: none; display: grid; place-items: center; min-width: 42px; height: 24px; padding: 0 9px; margin-left: 6px;
  font-family: var(--font-mono); font-size: 10.5px; font-weight: 700; letter-spacing: .5px; color: var(--cyan);
  background: rgba(34,211,238,.10); border: 1px solid var(--line); border-radius: 6px;
}
.starter strong { font-weight: 600; font-size: 13.5px; line-height: 1.45; }

/* ------------------------------ 对话视图 ------------------------------ */
.chatview-head {
  flex: none; display: flex; align-items: center; justify-content: space-between; gap: 10px;
  padding: 12px clamp(14px, 3vw, 26px); border-bottom: 1px solid var(--line);
}
.chatview-back, .chatview-clear {
  appearance: none; cursor: pointer; font-family: inherit; font-weight: 600; font-size: 13px; color: var(--cyan);
  background: rgba(34,211,238,.06); border: 1px solid var(--line-strong); border-radius: var(--r-pill); padding: 7px 13px; transition: transform .15s, box-shadow .15s, background .15s;
}
.chatview-back:hover, .chatview-clear:hover { transform: translateY(-1px); background: rgba(34,211,238,.14); }
.chatview-state { font-family: var(--font-mono); font-size: 12px; color: var(--ink-3); }
.chatview-state b { color: var(--cyan); }

.chat-list { flex: 1 1 auto; min-height: 0; overflow-y: auto; padding: 18px clamp(14px, 4vw, 40px); display: flex; flex-direction: column; gap: 16px; max-width: 900px; width: 100%; margin: 0 auto; }
.msg { display: flex; gap: 11px; align-items: flex-start; }
.msg-user { flex-direction: row-reverse; }
.msg-avatar { flex: none; display: grid; place-items: center; width: 40px; height: 40px; font-size: 20px; background: var(--grad-dim); border: 1px solid var(--line-strong); border-radius: 11px; }
.msg-body { max-width: min(80%, 620px); }
.msg-user .msg-body { text-align: right; }
.msg-name { font-family: var(--font-mono); font-size: 11px; color: var(--ink-3); margin: 2px 6px 4px; }
.msg-text { display: inline-block; text-align: left; padding: 12px 15px; border-radius: 4px 14px 14px 14px; background: var(--panel-solid); border: 1px solid var(--line); color: var(--ink); }
.msg-user .msg-text { border-radius: 14px 4px 14px 14px; background: linear-gradient(120deg, rgba(34,211,238,.22), rgba(59,130,246,.20)); border-color: var(--line-strong); color: #fff; }
.msg-text p { margin: 0 0 8px; } .msg-text p:last-child { margin-bottom: 0; }
.msg-text ul { margin: 6px 0; padding-left: 20px; } .msg-text li { margin: 3px 0; }
.msg-text strong { color: var(--cyan); }
.msg-note { color: var(--ink-3); font-size: 12.5px; } .msg-error { color: #fb7185; }
.typing { display: inline-flex; gap: 5px; padding: 2px 0; }
.typing i { width: 8px; height: 8px; border-radius: 50%; background: var(--cyan); box-shadow: var(--glow-cyan); animation: typing 1.2s ease-in-out infinite; }
.typing i:nth-child(2) { animation-delay: .2s; } .typing i:nth-child(3) { animation-delay: .4s; }
@keyframes typing { 0%,60%,100% { transform: translateY(0); opacity: .5; } 30% { transform: translateY(-5px); opacity: 1; } }

/* ------------------------------ 输入条 ------------------------------ */
.composer-slot { flex: none; }
.composer { width: 100%; max-width: 900px; margin: 0 auto; padding: 12px clamp(14px, 4vw, 40px) 14px; }
.composer-bar {
  display: flex; align-items: flex-end; gap: 10px; padding: 10px 10px 10px 14px;
  background: var(--panel); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--line-strong); border-radius: var(--r-lg); box-shadow: var(--glow);
}
.composer-ava { flex: none; align-self: center; display: grid; place-items: center; width: 36px; height: 36px; font-size: 19px; background: var(--grad-dim); border: 1px solid var(--line-strong); border-radius: 10px; }
.composer-input { flex: 1 1 auto; min-width: 0; resize: none; border: none; outline: none; background: transparent; font-family: inherit; font-size: 15px; line-height: 1.6; color: var(--ink); max-height: 150px; padding: 8px 2px; }
.composer-input::placeholder { color: var(--ink-3); }
.composer-stage-mini { align-self: center; font-family: var(--font-mono); font-size: 11px; color: var(--ink-3); white-space: nowrap; }
.composer-stage-mini b { color: var(--cyan); }
.stop-btn { align-self: center; appearance: none; cursor: pointer; font-family: inherit; font-weight: 700; font-size: 13px; color: var(--cyan); background: rgba(34,211,238,.06); border: 1px solid var(--line-strong); border-radius: var(--r-pill); padding: 8px 13px; transition: background .15s; }
.stop-btn:hover { background: rgba(34,211,238,.16); }
.send-btn { flex: none; align-self: center; appearance: none; cursor: pointer; display: grid; place-items: center; width: 42px; height: 42px; font-size: 17px; color: #04121b; background: var(--grad); border: none; border-radius: 11px; box-shadow: var(--glow-cyan); transition: transform .15s, filter .15s; }
.send-btn:hover { transform: translateY(-2px); filter: brightness(1.08); }
.send-btn:active { transform: translateY(0); }
.send-btn:disabled { opacity: .5; cursor: not-allowed; transform: none; }
.composer-tip { margin: 8px 4px 0; font-size: 11.5px; color: var(--ink-3); text-align: center; }

/* ------------------------------ 底部备案条 ------------------------------ */
.site-footer {
  flex: none; z-index: 1; position: relative;
  display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 4px 14px;
  padding: 9px 16px; font-size: 11.5px; color: var(--ink-3);
  background: rgba(5, 7, 14, .82); border-top: 1px solid var(--line);
}
.site-footer .sep { color: var(--line-strong); }
.site-footer a { color: var(--ink-3); text-decoration: none; }
.site-footer a:hover { color: var(--cyan); }

/* ------------------------------ Toast ------------------------------ */
.toast-wrap { position: fixed; left: 50%; bottom: 60px; transform: translateX(-50%); z-index: 50; display: flex; flex-direction: column; gap: 8px; align-items: center; pointer-events: none; }
.toast { padding: 10px 18px; font-size: 13.5px; font-weight: 700; color: #04121b; background: var(--grad); border-radius: var(--r-pill); box-shadow: var(--glow-cyan); animation: toastIn .3s ease; }
.toast.out { animation: toastOut .5s ease forwards; }
@keyframes toastIn { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: translateY(0); } }
@keyframes toastOut { to { opacity: 0; transform: translateY(12px); } }

/* ------------------------------ 关于页（复用变量，独立骨架见 about.css） ------------------------------ */
.site-header {
  position: relative; z-index: 3; flex: none; display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 14px clamp(16px, 4vw, 36px); background: rgba(8, 12, 22, .72);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); border-bottom: 1px solid var(--line);
}
.site-nav { display: flex; align-items: center; gap: 9px; }
.nav-btn {
  appearance: none; border: 1px solid var(--line-strong); background: rgba(34,211,238,.06); color: var(--cyan);
  font-family: inherit; font-weight: 600; font-size: 13.5px; padding: 8px 16px; border-radius: var(--r-pill);
  text-decoration: none; cursor: pointer; transition: transform .15s, box-shadow .15s, background .15s;
}
.nav-btn:hover { transform: translateY(-1px); background: rgba(34,211,238,.16); box-shadow: var(--glow-cyan); }

/* ------------------------------ 响应式：窄屏左栏收顶 ------------------------------ */
@media (max-width: 820px) {
  .console { flex-direction: column; }
  .rail {
    width: auto; height: auto; flex: none; gap: 12px;
    border-right: none; border-bottom: 1px solid var(--line); padding: 12px 14px;
  }
  .rail-block { gap: 8px; }
  .state-chips { flex-direction: row; flex-wrap: wrap; }
  .state-chip { flex: none; }
  .state-chip::before { display: none; }
  .rail-nav { flex-direction: row; margin-top: 0; }
  .rail-link { flex: 1; justify-content: center; }
  .rail-foot { display: none; }
  .starters { grid-template-columns: 1fr; }
}

/* ------------------------------ 无障碍：减少动效 ------------------------------ */
@media (prefers-reduced-motion: reduce) { * { animation: none !important; transition: none !important; } .cyberbg .scan { display: none; } }