/* 基础：设计变量（黑夜 / 白天两套）、全局样式、按钮、标签、输入框等各处都用的小部件 */

/* ---------- 设计变量 ---------- */

/* 这里是黑夜的样子；白天的覆盖在下面 body.day 那一组（页面默认白天，main.js 一启动就给 body 加上 day） */
:root {
  color-scheme: dark;
  --bg: #04050a;
  --text: #eef1fa;
  --text-2: rgba(226, 232, 250, .7);
  --text-3: rgba(226, 232, 250, .42);
  --line: rgba(255, 255, 255, .08);
  --line-2: rgba(255, 255, 255, .16);
  --blue: #5b8cff;
  --violet: #b48cff;
  --pink: #ff7ad9;
  --orange: #ff9a4d;
  --cyan: #5fe3ff;
  --green: #4cd98a;
  --font: 'PingFang SC', 'HarmonyOS Sans SC', 'Microsoft YaHei UI', 'Microsoft YaHei', 'Noto Sans SC', system-ui, sans-serif;
  --font-latin: 'Segoe UI Variable Display', 'Segoe UI', 'SF Pro Display', 'PingFang SC', 'Microsoft YaHei UI', system-ui, sans-serif;
  --ease-out: cubic-bezier(.22, 1, .36, 1);
  --ease-spring: cubic-bezier(.34, 1.45, .64, 1);
  --search-w: clamp(560px, 46vw, 980px);
  /* 个人站里的面板、按钮、输入框 */
  --card: rgba(255, 255, 255, .028);
  --card-hover: rgba(255, 255, 255, .05);
  --card-2: rgba(255, 255, 255, .06);
  --field: rgba(255, 255, 255, .035);
  --code: rgba(255, 255, 255, .04);
  --btn-bg: #eef1fa;
  --btn-ink: #05060b;
  --btn-glow: rgba(255, 255, 255, .3);
  --panel: #0b0d17;
  --mono: 'Cascadia Code', 'JetBrains Mono', ui-monospace, Consolas, 'Microsoft YaHei UI', monospace;
  --scrim: rgba(5, 6, 11, .6);
  --my-bg: #07080f;
  --my-bar: rgba(7, 8, 15, .78);
}
@property --ang {
  syntax: '<angle>';
  inherits: false;
  initial-value: 0deg;
}
body.day.in-site { background: #f5f6fa; }
/* 弹窗挂在 body 上，不在 #site 里面，所以颜色也要单独给一份 */
body.day #site, body.day .s-modal-back, body.day #my, body.day .s-zoom, body.day .m-splash, body.day .m-ghost {
  color-scheme: light;
  --text: #141722;
  --text-2: rgba(20, 23, 34, .68);
  --text-3: rgba(20, 23, 34, .44);
  --line: rgba(20, 30, 60, .08);
  --line-2: rgba(20, 30, 60, .16);
  --card: rgba(255, 255, 255, .66);
  --card-hover: #ffffff;
  --card-2: rgba(20, 30, 60, .05);
  --field: #ffffff;
  --code: rgba(20, 30, 60, .045);
  --btn-bg: #141722;
  --btn-ink: #ffffff;
  --btn-glow: rgba(20, 23, 34, .35);
  --panel: #fbfbfd;
  --scrim: rgba(245, 246, 250, .62);
  --my-bg: #f5f6fa;
  --my-bar: rgba(245, 246, 250, .82);
  color: var(--text);
}

/* ---------- 基础 ---------- */

*, *::before, *::after { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.6 var(--font);
  -webkit-font-smoothing: antialiased;
  -webkit-tap-highlight-color: transparent;
  overflow-x: hidden;
}
body.in-launch { overflow: hidden; }
[hidden] { display: none !important; }
a { color: inherit; }
::selection { background: rgba(120, 140, 255, .35); }
:focus-visible { outline: 2px solid rgba(140, 160, 255, .7); outline-offset: 3px; }

/* ---------- 图标 ---------- */

.ic { flex: none; width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }

/* ---------- 按钮 ---------- */

/* 白天 / 黑夜切换：显示的是现在的模式，点一下换 */
.theme-btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  height: 34px;
  padding: 0 12px;
  border: 1px solid var(--line-2);
  border-radius: 999px;
  background: transparent;
  color: var(--text-2);
  font: 500 12.5px var(--font);
  letter-spacing: .12em;
  cursor: pointer;
  transition: color .25s, border-color .25s, background .25s;
}
.theme-btn:hover { color: var(--text); border-color: var(--text-3); background: rgba(255, 255, 255, .04); }
.theme-btn svg { width: 15px; height: 15px; fill: none; stroke: currentColor; stroke-width: 1.9; stroke-linecap: round; stroke-linejoin: round; transition: transform .5s var(--ease-spring); }
.theme-btn:hover svg { transform: rotate(-20deg); }
.theme-btn .t-sun, .theme-btn .t-day { display: none; }
body.day .theme-btn .t-sun, body.day .theme-btn .t-day { display: inline; }
body.day .theme-btn .t-moon, body.day .theme-btn .t-night { display: none; }
.s-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 44px;
  padding: 0 20px;
  border: 1px solid transparent;
  border-radius: 12px;
  font: 500 14px var(--font);
  letter-spacing: .06em;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  transition: transform .4s var(--ease-spring), background .25s, border-color .25s, color .25s, box-shadow .3s;
}
.s-btn .ic { width: 17px; height: 17px; }
.s-btn.primary { background: var(--btn-bg); color: var(--btn-ink); box-shadow: 0 10px 28px -14px var(--btn-glow); }
.s-btn.primary:hover { transform: translateY(-1px); box-shadow: 0 12px 32px -10px var(--btn-glow); }
.s-btn.ghost { background: transparent; color: var(--text); border-color: var(--line-2); }
.s-btn.ghost:hover { border-color: var(--text-3); background: var(--card-hover); }
.s-btn.ghost.on { background: var(--btn-bg); color: var(--btn-ink); border-color: transparent; }
.s-btn:active { transform: scale(.97); }
.s-btn.sm { height: 34px; padding: 0 14px; border-radius: 10px; font-size: 13px; }
.s-btn.sm .ic { width: 15px; height: 15px; }
.s-btn:disabled { opacity: .42; cursor: not-allowed; transform: none; box-shadow: none; }
.s-btn.done { color: var(--green); border-color: color-mix(in srgb, var(--green) 50%, transparent); }
/* 实验室：已经加到我的台阶的 */
.s-added { color: var(--green); border-color: color-mix(in srgb, var(--green) 45%, transparent); }

/* ---------- 标签和状态 ---------- */

.s-sample {
  display: inline-block;
  margin-left: 8px;
  padding: 0 6px;
  border: 1px dashed var(--line-2);
  border-radius: 6px;
  font: 500 11px/18px var(--font);
  letter-spacing: .08em;
  color: var(--text-3);
  vertical-align: middle;
  white-space: nowrap;
}
.s-pill { flex: none; padding: 2px 9px; border: 1px solid var(--line-2); border-radius: 999px; font-size: 11.5px; letter-spacing: .06em; color: var(--text-2); white-space: nowrap; }
.s-status { display: inline-flex; align-items: center; gap: 6px; font-size: 12px; color: var(--text-3); }
.s-status::before { content: ''; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.s-status.ok { color: var(--green); }
.s-empty { padding: 44px 0; text-align: center; font-size: 14px; color: var(--text-3); }

/* ---------- 输入框 ---------- */

/* 输入框 */
.s-ask-row input, .s-propose input, .s-mail input {
  min-width: 0;
  height: 42px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: 11px;
  outline: 0;
  background: var(--field);
  color: var(--text);
  font: 14px var(--font);
  transition: border-color .25s;
}
.s-ask-row input:focus, .s-propose input:focus, .s-mail input:focus { border-color: var(--text-3); }
.s-ask textarea::placeholder, .s-ask-row input::placeholder, .s-propose input::placeholder, .s-mail input::placeholder { color: var(--text-3); }

/* ---------- 代码块和复制 ---------- */

/* 复制框：提示词、命令 */
.s-code { display: flex; align-items: flex-start; gap: 12px; padding: 12px 12px 12px 16px; border: 1px solid var(--line); border-radius: 12px; background: var(--code); }
.s-code code { flex: 1; min-width: 0; padding-top: 3px; font: 13px/1.75 var(--mono); color: var(--text); white-space: pre-wrap; word-break: break-all; }
.s-copy {
  flex: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 30px;
  padding: 0 11px;
  border: 1px solid var(--line-2);
  border-radius: 8px;
  background: transparent;
  color: var(--text-2);
  font: 12.5px var(--font);
  cursor: pointer;
  transition: color .25s, border-color .25s;
}
.s-copy .ic { width: 14px; height: 14px; }
.s-copy:hover { color: var(--text); border-color: var(--text-3); }
.s-copy.done { color: var(--green); border-color: color-mix(in srgb, var(--green) 50%, transparent); }

/* ---------- 二维码 ---------- */

.s-qr {
  display: grid;
  place-content: center;
  gap: 4px;
  width: 168px;
  aspect-ratio: 1;
  border: 1px dashed var(--line-2);
  border-radius: 16px;
  background: radial-gradient(var(--line-2) 1px, transparent 1.4px) 0 0 / 10px 10px, var(--card);
  text-align: center;
}
.s-qr span { font-size: 13px; color: var(--text-2); }
.s-qr small { font-size: 11px; color: var(--text-3); }
/* 传了真的二维码：白底，图片铺满 */
.s-qr.has-img { display: block; padding: 6px; border-style: solid; background: #fff; }
.s-qr.has-img img { display: block; width: 100%; height: 100%; border-radius: 10px; object-fit: contain; }

/* ---------- 分段选择 ---------- */

/* 问答：匿名提问 / 用账号提问 */
.s-seg { display: inline-flex; flex: none; padding: 3px; border: 1px solid var(--line); border-radius: 11px; background: var(--field); }
.s-seg label { cursor: pointer; }
.s-seg input { position: absolute; opacity: 0; pointer-events: none; }
.s-seg span { display: block; padding: 7px 12px; border-radius: 8px; font-size: 13px; color: var(--text-3); white-space: nowrap; transition: color .25s, background .25s; }
.s-seg input:checked + span { background: var(--btn-bg); color: var(--btn-ink); }
.s-seg input:focus-visible + span { outline: 2px solid rgba(140, 160, 255, .7); outline-offset: 2px; }

/* ---------- 外链 ---------- */

.s-link { display: inline-flex; align-items: center; gap: 10px; max-width: 100%; margin-top: 24px; padding: 12px 16px; border: 1px solid var(--line); border-radius: 12px; background: rgba(255, 255, 255, .04); color: var(--text-2); text-decoration: none; font-size: 14px; }
.s-link span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.s-link:hover { color: var(--text); border-color: var(--line-2); }
body.day .s-link { background: rgba(255, 255, 255, .7); }

/* ---------- 高亮一条 ---------- */

/* 从「我的台阶」的下拉跳过来的那一条：闪两下 */
.is-focus { border-radius: 14px; animation: focus-flash 1.3s ease 2; }

/* ---------- 动画 ---------- */

@keyframes rise { from { opacity: 0; transform: translateY(18px); filter: blur(8px); } }
@keyframes fade { from { opacity: 0; } }
@keyframes spin { to { --ang: 360deg; } }
@keyframes shake { 20% { transform: translateX(-7px); } 40% { transform: translateX(6px); } 60% { transform: translateX(-4px); } 80% { transform: translateX(2px); } }
@keyframes blink { 50% { opacity: .35; } }
@keyframes up { from { opacity: 0; transform: translateY(10px); } }
@keyframes focus-flash {
  0%, 100% { background: transparent; box-shadow: 0 0 0 0 rgba(91, 140, 255, 0); }
  40% { background: color-mix(in srgb, var(--blue) 8%, transparent); box-shadow: 0 0 0 3px rgba(91, 140, 255, .5); }
}

@media (min-width: 821px) and (max-height: 760px) {
  .s-foot .theme-btn { height: 30px; }
}

@media (max-width: 820px) {
  .m-bar .theme-btn { padding: 0 10px; }
  .m-bar .theme-btn span { display: none; }
  .s-seg label { flex: 1; text-align: center; }
}

@media (max-width: 480px) {
  .s-bar .theme-btn .t-night, .s-bar .theme-btn .t-day, body.day .s-bar .theme-btn .t-day { display: none; }
  .s-bar .theme-btn { padding: 0 10px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}