/* ================================================================
   Union Sign-in System — Theme Styles (Tech-Inspired)
   科技感全局主题样式
   版本: v2.0 / 2026-05-16

   此文件在 variables.css 之后加载。
   提供玻璃拟态、渐变、动效等科技感全局覆盖。
   必须配合 variables.css 使用。
   ================================================================ */

/* ═══════════════════════════════════════════════════
   BASE — 全局基础
   ═══════════════════════════════════════════════════ */

/* 背景渐变 + 纹理 */
body {
  background:
    radial-gradient(ellipse 80% 60% at 50% -20%, var(--primary-glow), transparent),
    radial-gradient(ellipse 60% 50% at 80% 80%, rgba(6, 182, 212, 0.08), transparent),
    linear-gradient(180deg, var(--bg-alt) 0%, var(--bg) 100%);
  background-attachment: fixed;
  color: var(--text);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

[data-theme="dark"] body {
  background:
    radial-gradient(ellipse 80% 60% at 50% -20%, var(--primary-glow), transparent),
    radial-gradient(ellipse 60% 50% at 80% 80%, rgba(99, 102, 241, 0.12), transparent),
    linear-gradient(180deg, #0B1120 0%, var(--bg) 100%);
  background-attachment: fixed;
}

/* 几何装饰线 (右上角、左下角) */
body::before {
  content: '';
  position: fixed;
  top: -120px;
  right: -120px;
  width: 400px;
  height: 400px;
  border: 1px solid rgba(79, 70, 229, 0.08);
  border-radius: 50%;
  pointer-events: none;
  z-index: 0;
  animation: orbitSlow 60s linear infinite;
}

body::after {
  content: '';
  position: fixed;
  bottom: -80px;
  left: -80px;
  width: 300px;
  height: 300px;
  border: 1px solid rgba(6, 182, 212, 0.06);
  border-radius: 50%;
  pointer-events: none;
  z-index: 0;
  animation: orbitSlow 45s linear infinite reverse;
}

/* ═══════════════════════════════════════════════════
   APP CONTAINER — 应用容器
   ═══════════════════════════════════════════════════ */
.app {
  position: relative;
  z-index: 1;
}

/* ═══════════════════════════════════════════════════
   CARD — 玻璃拟态卡片
   ═══════════════════════════════════════════════════ */
.card {
  background: var(--card);
  backdrop-filter: var(--card-backdrop);
  -webkit-backdrop-filter: var(--card-backdrop);
  border: var(--card-border);
  border-radius: var(--radius-lg);
  padding: var(--card-padding);
  box-shadow: var(--shadow-card);
  transition:
    transform var(--transition-base),
    box-shadow var(--transition-base);
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

/* 特殊卡片: 强调 */
.card-accent {
  background: var(--card);
  backdrop-filter: var(--card-backdrop);
  -webkit-backdrop-filter: var(--card-backdrop);
  border: 0.5px solid rgba(79, 70, 229, 0.15);
  border-radius: var(--radius-lg);
  padding: var(--card-padding);
  box-shadow: var(--shadow-card), inset 0 0 0 1px rgba(79, 70, 229, 0.05);
}

/* 特殊卡片: 成功态 */
.card-success {
  border-color: rgba(16, 185, 129, 0.2);
  box-shadow: var(--shadow-card), 0 0 24px rgba(16, 185, 129, 0.08);
}

/* ═══════════════════════════════════════════════════
   BUTTONS — 按钮
   ═══════════════════════════════════════════════════ */
button, .btn {
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

/* 主按钮 */
.btn-primary {
  background: var(--primary-gradient);
  color: #fff;
  border: none;
  border-radius: var(--btn-radius);
  padding: 0 var(--btn-padding-x);
  height: var(--btn-height);
  font-size: var(--btn-font-size);
  font-weight: var(--btn-font-weight);
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition:
    transform var(--transition-fast),
    box-shadow var(--transition-fast);
  box-shadow: 0 2px 8px var(--primary-glow);
}

/* 按钮光泽 */
.btn-primary::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.15), transparent);
  transition: left 0.5s;
}

.btn-primary:hover::after {
  left: 100%;
}

.btn-primary:hover {
  transform: translateY(-1px) scale(1.01);
  box-shadow: var(--glow-primary);
}

.btn-primary:active {
  transform: translateY(0) scale(0.98);
  box-shadow: 0 1px 4px var(--primary-glow);
}

.btn-primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

/* 次要按钮 */
.btn-secondary {
  background: transparent;
  color: var(--primary);
  border: 1.5px solid var(--primary);
  border-radius: var(--btn-radius);
  padding: 0 var(--btn-padding-x);
  height: var(--btn-height);
  font-size: var(--btn-font-size);
  font-weight: var(--btn-font-weight);
  cursor: pointer;
  transition:
    background var(--transition-fast),
    color var(--transition-fast),
    transform var(--transition-fast);
}

.btn-secondary:hover {
  background: var(--primary);
  color: #fff;
  transform: translateY(-1px);
}

.btn-secondary:active {
  transform: translateY(0) scale(0.98);
}

/* 成功按钮 */
.btn-success {
  background: linear-gradient(135deg, var(--success) 0%, #059669 100%);
  color: #fff;
  border: none;
  border-radius: var(--btn-radius);
  padding: 0 var(--btn-padding-x);
  height: var(--btn-height);
  font-size: var(--btn-font-size);
  font-weight: var(--btn-font-weight);
  cursor: pointer;
  transition:
    transform var(--transition-fast),
    box-shadow var(--transition-fast);
  box-shadow: 0 2px 8px rgba(16, 185, 129, 0.25);
}

.btn-success:hover {
  transform: translateY(-1px);
  box-shadow: var(--glow-success);
}

/* 危险按钮 */
.btn-danger {
  background: linear-gradient(135deg, var(--danger) 0%, #DC2626 100%);
  color: #fff;
  border: none;
  border-radius: var(--btn-radius);
  padding: 0 var(--btn-padding-x);
  height: var(--btn-height);
  font-size: var(--btn-font-size);
  font-weight: var(--btn-font-weight);
  cursor: pointer;
}

.btn-danger:hover {
  box-shadow: var(--glow-danger);
}

/* 文字按钮（无背景） */
.btn-text {
  background: none;
  color: var(--primary);
  border: none;
  padding: 0;
  font-size: var(--btn-font-size);
  font-weight: var(--weight-medium);
  cursor: pointer;
  min-height: var(--touch-min);
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  transition: opacity var(--transition-fast);
}

.btn-text:hover {
  opacity: 0.8;
}

/* ═══════════════════════════════════════════════════
   NAVIGATION BAR — 导航栏
   ═══════════════════════════════════════════════════ */
.header {
  background: var(--nav-bg);
  backdrop-filter: blur(var(--nav-blur));
  -webkit-backdrop-filter: blur(var(--nav-blur));
  border-bottom: 1px solid var(--nav-border);
}

/* 导航按钮 */
.nav-tab {
  transition:
    color var(--transition-fast),
    border-color var(--transition-fast),
    background var(--transition-fast);
}

.nav-tab:hover {
  background: rgba(79, 70, 229, 0.04);
}

.nav-tab.active {
  color: var(--primary);
  border-color: var(--primary);
  font-weight: var(--weight-semibold);
}

/* ═══════════════════════════════════════════════════
   FORM INPUTS — 表单输入
   ═══════════════════════════════════════════════════ */
input[type="text"],
input[type="tel"],
input[type="number"],
input[type="password"],
input[type="email"],
input[type="search"],
textarea,
select {
  background: var(--surface);
  border: var(--input-border-width) solid var(--border);
  border-radius: var(--input-radius);
  padding: 0 14px;
  height: var(--input-height);
  font-size: var(--text-base);
  color: var(--text);
  outline: none;
  transition:
    border-color var(--transition-fast),
    box-shadow var(--transition-fast),
    background var(--transition-fast);
  width: 100%;
}

input:focus,
textarea:focus,
select:focus {
  border-color: var(--primary);
  box-shadow: var(--input-focus-ring);
  background: var(--bg-alt);
}

input.error,
textarea.error,
select.error {
  border-color: var(--danger);
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.15);
}

/* Search input 特殊 */
input[type="search"] {
  border-radius: var(--radius-full);
  padding-left: 42px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='18' height='18' viewBox='0 0 24 24' fill='none' stroke='%236B7280' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='11' cy='11' r='8'%3E%3C/circle%3E%3Cline x1='21' y1='21' x2='16.65' y2='16.65'%3E%3C/line%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: 14px center;
}

/* ═══════════════════════════════════════════════════
   TOAST — 消息提示
   ═══════════════════════════════════════════════════ */
.toast {
  background: linear-gradient(135deg, #1F2937 0%, #111827 100%);
  color: #fff;
  border-radius: var(--toast-radius);
  padding: 14px 24px;
  font-size: var(--text-sm);
  box-shadow: var(--toast-shadow);
  backdrop-filter: blur(12px);
  border: 0.5px solid rgba(255, 255, 255, 0.1);
}

.toast.success {
  background: linear-gradient(135deg, var(--success) 0%, #059669 100%);
}

.toast.error {
  background: linear-gradient(135deg, var(--danger) 0%, #DC2626 100%);
}

.toast.warning {
  background: linear-gradient(135deg, var(--warning) 0%, #D97706 100%);
  color: #1E1B4B;
}

/* ═══════════════════════════════════════════════════
   BADGES / TAGS — 标签 / 徽章
   ═══════════════════════════════════════════════════ */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 10px;
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  white-space: nowrap;
}

.badge-primary {
  background: var(--info-light);
  color: var(--primary);
}

.badge-success {
  background: var(--success-light);
  color: #065F46;
}

.badge-danger {
  background: var(--danger-light);
  color: #991B1B;
}

.badge-warning {
  background: var(--warning-light);
  color: #92400E;
}

.badge-glass {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 0.5px solid var(--glass-border);
  color: var(--text);
}

/* ═══════════════════════════════════════════════════
   LOADING — 加载状态
   ═══════════════════════════════════════════════════ */
.loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-8);
  color: var(--text-secondary);
  font-size: var(--text-sm);
}

/* 科技感旋转器 */
.spinner {
  width: 32px;
  height: 32px;
  border: 2.5px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  margin-bottom: var(--space-3);
}

/* 双环 spinner（更有科技感） */
.spinner-double {
  position: relative;
  width: 40px;
  height: 40px;
  margin-bottom: var(--space-3);
}

.spinner-double::before,
.spinner-double::after {
  content: '';
  position: absolute;
  border-radius: 50%;
  border: 2px solid transparent;
}

.spinner-double::before {
  inset: 0;
  border-top-color: var(--primary);
  animation: spin 0.8s linear infinite;
}

.spinner-double::after {
  inset: 6px;
  border-bottom-color: #7C3AED;
  animation: spin 1.2s linear infinite reverse;
}

/* 骨架屏 (skeleton) */
.skeleton {
  background: linear-gradient(90deg, var(--border-light) 25%, var(--border) 50%, var(--border-light) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-sm);
}

/* ═══════════════════════════════════════════════════
   PROGRESS — 进度条
   ═══════════════════════════════════════════════════ */
.progress-bar {
  height: 6px;
  background: var(--border-light);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  background: var(--primary-gradient);
  border-radius: var(--radius-full);
  transition: width var(--transition-slow);
  position: relative;
}

.progress-bar-fill::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
  animation: shimmer 2s infinite;
}

/* ═══════════════════════════════════════════════════
   DIVIDER — 分割线（几何科技风）
   ═══════════════════════════════════════════════════ */
.divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border) 20%, var(--border) 80%, transparent);
  margin: var(--space-4) 0;
}

.divider-dot {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--text-tertiary);
  font-size: var(--text-xs);
  margin: var(--space-4) 0;
}

.divider-dot::before,
.divider-dot::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

/* ═══════════════════════════════════════════════════
   ANIMATION KEYFRAMES — 关键帧动画
   ═══════════════════════════════════════════════════ */

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

/* 骨架屏扫光 */
@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

/* 淡入上移 */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* 淡入 */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* 缩放入场 */
@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* 底部抽屉滑入 */
@keyframes slideUp {
  from { transform: translateY(100%); }
  to { transform: translateY(0); }
}

/* 顶部滑入 */
@keyframes slideDown {
  from { transform: translateY(-100%); }
  to { transform: translateY(0); }
}

/* 脉冲光晕 */
@keyframes pulseGlow {
  0%, 100% { box-shadow: 0 0 8px var(--primary-glow); }
  50% { box-shadow: 0 0 24px var(--primary-glow), 0 0 48px rgba(79, 70, 229, 0.15); }
}

/* 浮动效果（用于装饰元素） */
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

/* 慢速轨道旋转（装饰环） */
@keyframes orbitSlow {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* 呼吸光晕 */
@keyframes breathe {
  0%, 100% { opacity: 0.6; }
  50% { opacity: 1; }
}

/* 计数弹出 */
@keyframes countPop {
  0% { transform: scale(1); }
  50% { transform: scale(1.3); }
  100% { transform: scale(1); }
}

/* 成功勾画 */
@keyframes checkDraw {
  from { stroke-dashoffset: 24; }
  to { stroke-dashoffset: 0; }
}

/* 摇动（错误反馈） */
@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20%, 60% { transform: translateX(-6px); }
  40%, 80% { transform: translateX(6px); }
}

/* ═══════════════════════════════════════════════════
   UTILITY CLASSES — 工具类
   ═══════════════════════════════════════════════════ */

/* 动画附着 */
.animate-fadeInUp {
  animation: fadeInUp var(--transition-slow) forwards;
}

.animate-fadeIn {
  animation: fadeIn var(--transition-base) forwards;
}

.animate-scaleIn {
  animation: scaleIn var(--transition-spring) forwards;
}

.animate-slideUp {
  animation: slideUp var(--transition-base) forwards;
}

.animate-shake {
  animation: shake 0.4s ease;
}

/* 玻璃面板 */
.glass-panel {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 0.5px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
  border-radius: var(--radius-lg);
}

/* 渐变文字 */
.text-gradient {
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* 分隔间距 */
.mt-auto { margin-top: auto; }
.flex-1 { flex: 1; }
.shrink-0 { flex-shrink: 0; }

/* ═══════════════════════════════════════════════════
   RESPONSIVE — 响应式微调
   ═══════════════════════════════════════════════════ */
@media (max-width: 500px) {
  .card {
    border-radius: var(--radius);
    padding: 16px;
  }

  body::before,
  body::after {
    width: 200px;
    height: 200px;
  }
}

/* ═══════════════════════════════════════════════════
   DARK MODE TOGGLE — 暗色模式切换按钮
   ═══════════════════════════════════════════════════ */
.theme-toggle {
  width: var(--touch-min);
  height: var(--touch-min);
  border-radius: var(--radius-full);
  border: none;
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  transition:
    background var(--transition-fast),
    transform var(--transition-fast);
}

.theme-toggle:hover {
  transform: scale(1.1);
}

.theme-toggle:active {
  transform: scale(0.95);
}

/* ═══════════════════════════════════════════════════
   PRINT / REDUCED MOTION
   ═══════════════════════════════════════════════════ */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}