:root {
  --bg-primary: #0a0d14;
  --bg-secondary: #121824;
  --bg-card: rgba(18, 24, 38, 0.72);
  --bg-card-hover: rgba(26, 35, 54, 0.85);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-glow: rgba(56, 189, 248, 0.25);
  
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  --accent-cyan: #38bdf8;
  --accent-blue: #3b82f6;
  --accent-indigo: #6366f1;
  --accent-purple: #a855f7;
  --accent-emerald: #10b981;
  --accent-rose: #f43f5e;

  --gradient-brand: linear-gradient(135deg, #38bdf8 0%, #6366f1 50%, #a855f7 100%);
  --gradient-card: linear-gradient(180deg, rgba(255, 255, 255, 0.04) 0%, rgba(255, 255, 255, 0.01) 100%);
  --shadow-glow: 0 0 35px -8px rgba(56, 189, 248, 0.25);
  --shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.5);

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --transition-smooth: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.5;
  overflow-x: hidden;
  position: relative;
  background-image: 
    radial-gradient(circle at 15% 15%, rgba(56, 189, 248, 0.08) 0%, transparent 40%),
    radial-gradient(circle at 85% 75%, rgba(99, 102, 241, 0.09) 0%, transparent 45%);
  background-attachment: fixed;
}

/* 顶部流光背景粒子效果 */
.bg-ambient {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  pointer-events: none;
  z-index: 0;
  opacity: 0.7;
}

/* 顶栏 Header */
.app-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  background: rgba(10, 13, 20, 0.75);
  border-bottom: 1px solid var(--border-color);
  padding: 0.85rem 1.75rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-wrapper {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
}

.brand-icon {
  width: 36px;
  height: 36px;
  background: var(--gradient-brand);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 14px rgba(56, 189, 248, 0.3);
}

.brand-icon svg {
  width: 20px;
  height: 20px;
  color: #fff;
}

.brand-title {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, #ffffff 0%, #cbd5e1 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-badge {
  font-size: 0.7rem;
  padding: 2px 8px;
  background: rgba(56, 189, 248, 0.12);
  color: var(--accent-cyan);
  border: 1px solid rgba(56, 189, 248, 0.25);
  border-radius: var(--radius-full);
  font-weight: 500;
}

/* 用户状态区域 */
.user-menu {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.user-badge {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.85rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  font-size: 0.85rem;
}

.user-avatar {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: linear-gradient(135deg, #6366f1, #38bdf8);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 600;
}

.admin-tag {
  background: rgba(245, 158, 11, 0.15);
  color: #fbbf24;
  font-size: 0.7rem;
  padding: 1px 6px;
  border-radius: 4px;
  border: 1px solid rgba(245, 158, 11, 0.3);
  font-weight: 600;
}

/* 按钮规范 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: var(--transition-smooth);
  text-decoration: none;
}

.btn-primary {
  background: var(--gradient-brand);
  color: #ffffff;
  border: none;
  box-shadow: 0 4px 15px rgba(56, 189, 248, 0.25);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(56, 189, 248, 0.35);
  filter: brightness(1.08);
}

.btn-outline {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.18);
}

.btn-danger {
  background: rgba(244, 63, 94, 0.12);
  color: var(--accent-rose);
  border: 1px solid rgba(244, 63, 94, 0.3);
}

.btn-danger:hover {
  background: rgba(244, 63, 94, 0.2);
}

/* 主容器 */
.main-container {
  position: relative;
  z-index: 10;
  max-width: 1200px;
  margin: 0 auto;
  padding: 3rem 1.5rem;
}

/* 欢迎 Hero */
.hero-section {
  text-align: center;
  margin-bottom: 3.5rem;
}

.hero-title {
  font-size: 2.5rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 0.75rem;
  background: linear-gradient(135deg, #ffffff 10%, #94a3b8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* 应用网格布局 */
.apps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.75rem;
}

/* 单个应用卡片 */
.app-card {
  position: relative;
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: var(--transition-smooth);
  box-shadow: var(--shadow-card);
  overflow: hidden;
}

.app-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-brand);
  opacity: 0;
  transition: var(--transition-smooth);
}

.app-card:hover {
  transform: translateY(-4px);
  background: var(--bg-card-hover);
  border-color: var(--border-glow);
  box-shadow: var(--shadow-glow), var(--shadow-card);
}

.app-card:hover::before {
  opacity: 1;
}

.card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 1.25rem;
}

.card-icon-box {
  width: 50px;
  height: 50px;
  border-radius: var(--radius-md);
  background: rgba(56, 189, 248, 0.08);
  border: 1px solid rgba(56, 189, 248, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-cyan);
}

.card-icon-box svg {
  width: 26px;
  height: 26px;
}

.status-indicator {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.75rem;
  color: var(--accent-emerald);
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: var(--accent-emerald);
  box-shadow: 0 0 8px var(--accent-emerald);
}

.card-body {
  margin-bottom: 1.5rem;
}

.card-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 0.45rem;
}

.card-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.55;
  min-height: 42px;
}

.card-meta {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1rem;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.app-link-btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.65rem 1rem;
  background: rgba(56, 189, 248, 0.1);
  color: var(--accent-cyan);
  border: 1px solid rgba(56, 189, 248, 0.25);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  transition: var(--transition-smooth);
}

.app-link-btn:hover {
  background: var(--gradient-brand);
  color: #fff;
  border-color: transparent;
  box-shadow: 0 4px 15px rgba(56, 189, 248, 0.35);
}

/* 登录弹窗与容器：采用与 TiamoPortal 卡片完全一致的白透磨砂玻璃拟态 */
.login-wrapper {
  max-width: 440px;
  margin: 3.5rem auto;
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(28px) saturate(180%);
  -webkit-backdrop-filter: blur(28px) saturate(180%);
  border: 1px solid rgba(255, 255, 255, 0.9);
  border-radius: 24px;
  padding: 2.75rem 2.5rem;
  box-shadow: 0 30px 60px -15px rgba(15, 23, 42, 0.28), 0 0 0 1px rgba(255, 255, 255, 0.7);
  position: relative;
  transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.login-header {
  text-align: center;
  margin-bottom: 2rem;
}

.login-logo {
  width: 58px;
  height: 58px;
  margin: 0 auto 1.25rem;
  background: linear-gradient(135deg, #0284c7 0%, #38bdf8 100%);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 10px 25px -4px rgba(2, 132, 199, 0.4);
}

.login-logo svg {
  width: 30px;
  height: 30px;
  color: #fff;
}

.login-title {
  font-size: 1.55rem;
  font-weight: 700;
  color: #0f172a;
  letter-spacing: -0.02em;
  margin-bottom: 0.35rem;
}

.login-subtitle {
  font-size: 0.875rem;
  color: #64748b;
  line-height: 1.5;
}

.form-group {
  margin-bottom: 1.35rem;
}

.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: #334155;
  margin-bottom: 0.5rem;
}

.input-box {
  position: relative;
  display: flex;
  align-items: center;
}

.input-box svg {
  position: absolute;
  left: 14px;
  width: 18px;
  height: 18px;
  color: #94a3b8;
  pointer-events: none;
}

.form-input {
  width: 100%;
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid rgba(15, 23, 42, 0.14);
  border-radius: 12px;
  padding: 0.75rem 0.95rem 0.75rem 2.65rem;
  color: #0f172a;
  font-size: 0.95rem;
  font-weight: 500;
  outline: none;
  box-shadow: inset 0 2px 4px rgba(15, 23, 42, 0.03);
  transition: all 0.25s ease;
}

.form-input::placeholder {
  color: #94a3b8;
  font-weight: 400;
}

.form-input:focus {
  background: #ffffff;
  border-color: #0284c7;
  box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.16), inset 0 2px 4px rgba(15, 23, 42, 0.02);
}

.pwd-toggle-btn {
  position: absolute;
  right: 12px;
  background: transparent;
  border: none;
  color: #94a3b8;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 6px;
  border-radius: 6px;
  transition: all 0.2s ease;
}

.pwd-toggle-btn:hover {
  color: #0284c7;
  background: rgba(2, 132, 199, 0.08);
}

.login-wrapper .btn-primary {
  width: 100%;
  padding: 0.85rem;
  font-size: 1rem;
  font-weight: 600;
  border-radius: 12px;
  background: linear-gradient(135deg, #0284c7 0%, #0369a1 100%);
  color: #ffffff;
  border: none;
  box-shadow: 0 10px 25px -5px rgba(2, 132, 199, 0.45);
  cursor: pointer;
  transition: all 0.25s ease;
  letter-spacing: 0.02em;
}

.login-wrapper .btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 30px -6px rgba(2, 132, 199, 0.55);
  filter: brightness(1.05);
}

.login-wrapper .btn-primary:active {
  transform: translateY(0);
}

.form-hint {
  font-size: 0.775rem;
  color: #64748b;
  margin-top: 0.4rem;
}

.alert-box {
  padding: 0.75rem 1rem;
  border-radius: 10px;
  font-size: 0.85rem;
  margin-bottom: 1.25rem;
  display: none;
}

.alert-error {
  background: rgba(254, 226, 226, 0.95);
  border: 1px solid #fca5a5;
  color: #991b1b;
  font-weight: 500;
}

.alert-success {
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: #a7f3d0;
}

/* 动效抖动 */
@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20%, 60% { transform: translateX(-6px); }
  40%, 80% { transform: translateX(6px); }
}

.shake {
  animation: shake 0.4s ease-in-out;
}

/* 底部 Footer */
.app-footer {
  text-align: center;
  padding: 2.5rem 1.5rem;
  color: var(--text-muted);
  font-size: 0.8rem;
  border-top: 1px solid var(--border-color);
  margin-top: 4rem;
}

/* 响应式调整 */
@media (max-width: 640px) {
  .hero-title {
    font-size: 2rem;
  }
  .apps-grid {
    grid-template-columns: 1fr;
  }
  .login-wrapper {
    padding: 1.75rem;
    margin: 2rem 1rem;
  }
}