/* ============================================================
   app.css — 重构后的全局样式

   设计语言来自「动态背景集」设计包：深色底 + 衬线中文（Noto Serif SC）
   + 等宽点缀（JetBrains Mono）+ 烫金主色，玻璃拟态卡片，低调奢华。
============================================================ */

:root {
  --bg: #05070b;
  --gold: #d4af6e;
  --gold-bright: #e8c98f;
  --text: rgba(255, 255, 255, 0.92);
  --text-dim: rgba(255, 255, 255, 0.55);
  --text-faint: rgba(255, 255, 255, 0.4);
  --border: rgba(255, 255, 255, 0.12);
  --field: rgba(255, 255, 255, 0.045);
  --danger: #ff8f8f;
  --serif: "Noto Serif SC", "Songti SC", "Microsoft YaHei", serif;
  --mono: "JetBrains Mono", ui-monospace, "Cascadia Code", monospace;
}

* { box-sizing: border-box; }

html, body {
  height: 100%;
  margin: 0;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--serif);
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  /* 背景特效需要在卡片外的空白处按下拖动来交互（涟漪/拖尾/吸附等），
     浏览器默认会把这种拖动当成「选中页面文字」或「拖拽文字/图片」，
     于是一点背景就误选一片标题文案、还能把文字/图片拖出去。
     全局关掉文本选择与原生拖拽，仅在真正需要的输入框 / 结果文案处放开（见下）。 */
  user-select: none;
  -webkit-user-select: none;
  -webkit-touch-callout: none;
}

/* 输入框、可复制的结果/提示文案仍允许选中，保证账号密码可正常编辑、
   兑换结果等可被复制；其余区域一律不可选，避免误选。 */
input, textarea, .form-msg {
  user-select: text;
  -webkit-user-select: text;
}

/* 禁用图片 / 链接的原生拖拽（footer 的 QQ 群图标等），
   user-drag 仅 WebKit 支持，Firefox 由元素上的 draggable="false" 兜底。 */
img, a {
  -webkit-user-drag: none;
  user-drag: none;
}

/* ---------- 背景特效层 ---------- */
#bg-root {
  position: fixed;
  inset: 0;
  z-index: -2;
  background: var(--bg);
}
#bg-canvas {
  display: block;
  width: 100%;
  height: 100%;
}
/* 暗角薄纱：压暗背景边缘，让前景卡片更突出、更易读 */
#bg-veil {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background: radial-gradient(125% 85% at 50% 48%,
    rgba(5, 7, 11, 0) 30%,
    rgba(5, 7, 11, 0.45) 78%,
    rgba(5, 7, 11, 0.7) 100%);
}

/* ---------- 舞台 / 布局 ---------- */
.stage {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 18px 120px;
  overflow-y: auto;
}

/* ---------- 玻璃卡片 ---------- */
.panel {
  width: 372px;
  max-width: 100%;
  padding: 40px 36px 34px;
  text-align: center;
  border-radius: 20px;
  border: 1px solid rgba(212, 175, 110, 0.18);
  background: linear-gradient(180deg, rgba(18, 20, 28, 0.62), rgba(9, 11, 17, 0.74));
  backdrop-filter: blur(24px) saturate(125%);
  -webkit-backdrop-filter: blur(24px) saturate(125%);
  box-shadow:
    0 28px 90px rgba(0, 0, 0, 0.6),
    0 1px 0 rgba(255, 255, 255, 0.06) inset,
    0 0 0 1px rgba(255, 255, 255, 0.02) inset;
  animation: panel-in 0.55s cubic-bezier(0.2, 0.7, 0.3, 1);
}

@keyframes panel-in {
  from { opacity: 0; transform: translateY(16px) scale(0.99); }
  to   { opacity: 1; transform: none; }
}

.panel h1 {
  margin: 0;
  font-size: 27px;
  font-weight: 600;
  letter-spacing: 0.18em;
  line-height: 1.2;
  background: linear-gradient(180deg, #fbeed0, var(--gold));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* 标题下的金色细线 */
.panel .rule {
  width: 56px;
  height: 1px;
  margin: 16px auto 0;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
}

.tagline {
  margin: 16px 0 28px;
  font-size: 13px;
  letter-spacing: 0.32em;
  color: var(--text-faint);
  font-weight: 300;
}

/* ---------- 表单 ---------- */
.panel form {
  width: 100%;
  margin: 0;
}

.field {
  width: 100%;
  height: 48px;
  margin-top: 14px;
  padding: 0 16px;
  background: var(--field);
  border: 1px solid var(--border);
  border-radius: 11px;
  color: var(--text);
  font-family: var(--serif);
  font-size: 14px;
  letter-spacing: 0.04em;
  transition: border-color 0.2s, background 0.2s, box-shadow 0.2s;
}
.field::placeholder { color: var(--text-faint); }
.field:focus {
  outline: none;
  border-color: rgba(212, 175, 110, 0.6);
  background: rgba(255, 255, 255, 0.06);
  box-shadow: 0 0 0 3px rgba(212, 175, 110, 0.14);
}

/* ---------- 滑动验证码（拖到末端即通过） ---------- */
/* 交互逻辑见 wwwroot/js/slider-captcha.js；DOM 由 JS 直接操作，组件标记保持全静态 */
.slider-captcha {
  position: relative;
  width: 100%;
  height: 48px;
  margin-top: 14px;
  user-select: none;
  -webkit-user-select: none;
  touch-action: none;          /* 触屏拖动时不触发页面滚动 */
}
.sc-track {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 11px;
  background: var(--field);
  border: 1px solid var(--border);
  overflow: hidden;
  transition: border-color 0.2s;
}
/* 已划过的填充条 */
.sc-fill {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 0;
  background: linear-gradient(90deg, rgba(212, 175, 110, 0.3), rgba(232, 201, 143, 0.5));
  transition: width 0.22s cubic-bezier(0.2, 0.7, 0.3, 1);
}
/* 居中提示文字（位于填充条之上、滑块之下） */
.sc-label {
  position: relative;
  z-index: 1;
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--text-faint);
  pointer-events: none;
}
/* 可拖动的滑块 */
.sc-handle {
  position: absolute;
  left: 0;
  top: 0;
  z-index: 2;
  width: 48px;
  height: 100%;
  border-radius: 11px;
  cursor: grab;
  background: linear-gradient(135deg, var(--gold-bright), var(--gold));
  box-shadow:
    0 4px 14px rgba(212, 175, 110, 0.3),
    0 1px 0 rgba(255, 255, 255, 0.45) inset;
  transition: left 0.22s cubic-bezier(0.2, 0.7, 0.3, 1);
}
/* 滑块上的箭头 */
.sc-handle::after {
  content: "❯";
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 700;
  color: #23170a;
}

/* 拖动时关闭过渡，做到跟手；松手/复位时恢复过渡平滑弹回 */
.slider-captcha.sc-dragging .sc-handle,
.slider-captcha.sc-dragging .sc-fill { transition: none; }
.slider-captcha.sc-dragging .sc-handle { cursor: grabbing; }

/* 验证通过态：整体转为青绿 + 对勾 */
.slider-captcha.sc-done .sc-track { border-color: rgba(120, 200, 150, 0.6); }
.slider-captcha.sc-done .sc-fill {
  width: 100% !important;
  background: linear-gradient(90deg, rgba(80, 180, 120, 0.4), rgba(120, 210, 150, 0.55));
}
.slider-captcha.sc-done .sc-label { color: #bfe9cf; }
.slider-captcha.sc-done .sc-handle {
  cursor: default;
  background: linear-gradient(135deg, #7fe0a3, #46c07a);
}
.slider-captcha.sc-done .sc-handle::after {
  content: "✓";
  color: #062012;
}

/* ---------- 操作结果：内联兜底文字 + 浮动 toast ----------
   常态（有 JS）：has-js 隐藏内联文字，结果只以 #toast-root 的浮动 toast 呈现
   （界面上不再有红字，见 toast.js / FormMessage.razor）。
   无 JS 兜底（整页 POST）：内联文字可见，配色柔和、不刺眼。 */
.form-msg {
  display: block;
  margin-top: 14px;
  font-size: 13px;
  letter-spacing: 0.05em;
  line-height: 1.5;
  color: var(--text-dim);
}
.form-msg[data-kind="error"]   { color: var(--danger); }
.form-msg[data-kind="success"] { color: #8fe6b3; }
.has-js .form-msg { display: none; }   /* 有 JS：内联文字隐藏，改由浮动 toast 呈现 */

/* 浮动 toast 容器：固定在顶部居中，整体不挡交互 */
#toast-root {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding: 22px 16px 0;
  pointer-events: none;
}

/* 单条 toast：与卡片同款玻璃拟态，左侧圆形图标分色 */
.toast {
  pointer-events: auto;
  display: flex;
  align-items: center;
  gap: 11px;
  max-width: min(90vw, 400px);
  padding: 13px 17px;
  border-radius: 13px;
  border: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(22, 25, 34, 0.88), rgba(12, 14, 21, 0.92));
  backdrop-filter: blur(20px) saturate(125%);
  -webkit-backdrop-filter: blur(20px) saturate(125%);
  box-shadow:
    0 18px 50px rgba(0, 0, 0, 0.55),
    0 1px 0 rgba(255, 255, 255, 0.06) inset;
  color: var(--text);
  font-family: var(--serif);
  font-size: 14px;
  letter-spacing: 0.04em;
  line-height: 1.5;
  cursor: pointer;
  animation: toast-in 0.42s cubic-bezier(0.2, 0.7, 0.3, 1);
}
.toast.toast-out {
  animation: toast-out 0.3s cubic-bezier(0.4, 0, 1, 1) forwards;
}
@keyframes toast-in {
  from { opacity: 0; transform: translateY(-18px) scale(0.96); }
  to   { opacity: 1; transform: none; }
}
@keyframes toast-out {
  to { opacity: 0; transform: translateY(-12px) scale(0.96); }
}

.toast-icon {
  flex: 0 0 auto;
  width: 22px;
  height: 22px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 700;
  line-height: 1;
}
.toast-text { flex: 1 1 auto; }

.toast--success { border-color: rgba(120, 200, 150, 0.45); }
.toast--success .toast-icon { background: rgba(80, 180, 120, 0.2); color: #8fe6b3; }
.toast--error { border-color: rgba(224, 122, 122, 0.45); }
.toast--error .toast-icon { background: rgba(224, 100, 100, 0.2); color: #ff9b9b; }

@media (prefers-reduced-motion: reduce) {
  .toast,
  .toast.toast-out { animation-duration: 0.01ms; }
}

/* ---------- 按钮 ---------- */
.btn-primary {
  width: 100%;
  height: 48px;
  margin-top: 24px;   /* 提示移到浮动 toast 后，补足与上方表单的呼吸间距 */
  border: none;
  border-radius: 11px;
  cursor: pointer;
  font-family: var(--serif);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.3em;
  color: #23170a;
  background: linear-gradient(135deg, var(--gold-bright), var(--gold));
  box-shadow:
    0 10px 28px rgba(212, 175, 110, 0.28),
    0 1px 0 rgba(255, 255, 255, 0.45) inset;
  transition: transform 0.15s, box-shadow 0.2s, filter 0.2s;
}
.btn-primary:hover {
  filter: brightness(1.06);
  transform: translateY(-1px);
  box-shadow:
    0 14px 34px rgba(212, 175, 110, 0.4),
    0 1px 0 rgba(255, 255, 255, 0.5) inset;
}
.btn-primary:active { transform: translateY(0); }

/* 次级导航按钮，自动换行成两列 */
.nav-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}
.btn-ghost {
  display: inline-flex;          /* 既用于 <button> 也用于 <a>，统一盒模型与居中 */
  align-items: center;
  justify-content: center;
  text-decoration: none;
  flex: 1 1 auto;
  min-width: calc(50% - 5px);
  height: 40px;
  border-radius: 10px;
  cursor: pointer;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  color: var(--text-dim);
  font-family: var(--serif);
  font-size: 13px;
  letter-spacing: 0.1em;
  transition: border-color 0.2s, color 0.2s, background 0.2s;
}
.btn-ghost:hover {
  border-color: rgba(212, 175, 110, 0.5);
  color: var(--gold-bright);
  background: rgba(212, 175, 110, 0.06);
}

/* ---------- 底部状态栏（在线人数 + QQ 群） ---------- */
.site-footer {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 18px;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  text-align: center;
  pointer-events: none;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--text-dim);
}
.site-footer .online em {
  color: var(--gold-bright);
  font-style: normal;
  font-weight: 600;
  padding: 0 5px;
}
.site-footer a {
  pointer-events: auto;
  opacity: 0.85;
  transition: opacity 0.2s, transform 0.2s;
}
.site-footer a:hover { opacity: 1; transform: translateY(-1px); }
.site-footer img { border: 0; display: block; }

/* ---------- 小屏适配 ---------- */
@media (max-width: 480px) {
  .panel { padding: 32px 22px 28px; border-radius: 16px; }
  .panel h1 { font-size: 23px; }
  .stage { padding: 28px 14px 120px; }
}