/* ============================================================
   GitCode — 夏日海洋主题 / 夜空星辰主题
   Light: 天空蓝 + 浅海蓝渐变，夏威夷闲适风
   Dark:  深海星空 + 银河紫蓝，夏威夷星夜
   ============================================================ */

/* --- Reset & Base --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --sky: #0EA5E9;
  --sky-light: #7DD3FC;
  --ocean: #38BDF8;
  --cyan: #06B6D4;
  --teal: #14B8A6;
  --ice: #F0F9FF;
  --ice2: #E0F2FE;
  --ice3: #ECFEFF;
  --white: #FFFFFF;
  --deep: #0C4A6E;
  --deep2: #0369A1;
  --slate: #64748B;
  --slate-light: #94A3B8;
  --amber: #F59E0B;
  --green: #10B981;
  --red: #EF4444;
  --coral: #FB923C;
  --gold: #FBBF24;
  --sand: #FEF3C7;
  --radius: 18px;
  --radius-sm: 10px;
  --shadow: 0 4px 24px rgba(14, 165, 233, 0.08);
  --shadow-lg: 0 8px 40px rgba(14, 165, 233, 0.12);
  --shadow-glow: 0 0 40px rgba(14, 165, 233, 0.08);
  --glass-bg: rgba(255, 255, 255, 0.65);
  --glass-border: rgba(255, 255, 255, 0.45);
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Noto Sans SC', sans-serif;
  --font-mono: 'SF Mono', 'Fira Code', 'JetBrains Mono', Consolas, monospace;
  --transition: 0.2s ease;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  color: var(--deep);
  background: linear-gradient(160deg, #E0F2FE 0%, #F0F9FF 30%, #ECFEFF 60%, #F0FDFA 100%);
  min-height: 100vh;
  line-height: 1.6;
  overflow-x: hidden;
}

/* --- Decorative Orbs (光斑) --- */
.decor-orb {
  position: fixed;
  border-radius: 50%;
  pointer-events: none;
  z-index: 0;
  filter: blur(60px);
}

.decor-orb-1 {
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(14, 165, 233, 0.12) 0%, transparent 70%);
  top: -100px;
  right: -100px;
}

.decor-orb-2 {
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(6, 182, 212, 0.10) 0%, transparent 70%);
  bottom: 10%;
  left: -80px;
}

.decor-orb-3 {
  width: 280px;
  height: 280px;
  background: radial-gradient(circle, rgba(251, 191, 36, 0.10) 0%, transparent 70%);
  top: 25%;
  left: -60px;
}

/* --- Wave Background --- */
.wave-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  pointer-events: none;
  overflow: hidden;
}

.wave-bg svg {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: auto;
  opacity: 0.30;
}

.wave-bg .wave-top {
  top: -2px;
  bottom: auto;
  opacity: 0.12;
  transform: rotate(180deg);
}

.wave-bg .wave-mid {
  bottom: 60px;
  opacity: 0.10;
}

/* --- Glass Card --- */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow), var(--shadow-glow);
}

/* --- Container --- */
.container {
  max-width: 540px;
  margin: 0 auto;
  padding: 8px 20px 48px;
  position: relative;
  z-index: 1;
}

/* --- Detail Nav --- */
.detail-nav {
  padding: 24px 0 8px;
}

.header-back {
  color: var(--sky);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: color var(--transition);
}

.header-back:hover {
  color: var(--cyan);
}

/* --- Footer --- */
.footer {
  text-align: center;
  padding: 32px 0 8px;
  color: var(--slate-light);
  font-size: 0.8rem;
  letter-spacing: 0.3px;
  opacity: 0.7;
}

/* --- Home Page --- */
.home {
  text-align: center;
  padding-top: 16px;
}

.home-icon {
  font-size: 2rem;
  margin-bottom: 8px;
  filter: drop-shadow(0 2px 8px rgba(251, 191, 36, 0.3));
}

.home-title {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--deep);
  margin-bottom: 8px;
}

.home-desc {
  color: var(--slate);
  font-size: 0.95rem;
  margin-bottom: 32px;
  line-height: 1.7;
}

.code-input-wrap {
  display: flex;
  gap: 10px;
  max-width: 380px;
  margin: 0 auto 20px;
}

.code-input {
  flex: 1;
  padding: 14px 18px;
  border: 2px solid rgba(14, 165, 233, 0.15);
  border-radius: var(--radius);
  font-size: 1.1rem;
  font-family: var(--font-mono);
  letter-spacing: 2px;
  text-align: center;
  color: var(--deep);
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.code-input::placeholder {
  color: var(--slate-light);
  letter-spacing: 0;
  font-family: var(--font-sans);
  font-size: 0.95rem;
}

.code-input:focus {
  border-color: var(--sky);
  box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.15), 0 0 20px rgba(14, 165, 233, 0.08);
}

.btn-go {
  padding: 14px 28px;
  background: linear-gradient(135deg, var(--sky), var(--cyan), var(--teal));
  color: white;
  border: none;
  border-radius: var(--radius);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition);
  white-space: nowrap;
}

.btn-go:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(14, 165, 233, 0.35);
}

.btn-go:active {
  transform: translateY(0);
}

.home-hint {
  color: var(--slate-light);
  font-size: 0.85rem;
  margin-bottom: 40px;
}

.home-hint code {
  color: var(--sky);
  font-family: var(--font-mono);
  background: rgba(14, 165, 233, 0.08);
  padding: 2px 6px;
  border-radius: 4px;
}

/* Home info card */
.home-info {
  border-radius: var(--radius);
  padding: 24px;
  text-align: left;
}

.home-info h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--deep);
  margin-bottom: 8px;
}

.home-info p {
  color: var(--slate);
  font-size: 0.9rem;
  line-height: 1.7;
}

/* --- Home Divider & TOTP Entry --- */
.home-divider {
  width: 60px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--ocean), transparent);
  margin: 36px auto;
  opacity: 0.5;
}

.home-totp-entry {
  text-align: center;
  margin-bottom: 8px;
}

/* --- Account Detail Page --- */
.detail {
  padding-top: 8px;
}

.account-header {
  text-align: center;
  margin-bottom: 20px;
}

.account-username {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--deep);
}

.account-meta {
  color: var(--slate);
  font-size: 0.875rem;
  margin-top: 4px;
  line-height: 1.5;
}

.account-ghid {
  color: var(--slate-light);
  font-size: 0.75rem;
  font-family: var(--font-mono);
  margin-top: 2px;
}

/* --- Memo Bar --- */
.memo-bar {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  padding: 12px 16px;
  margin-bottom: 16px;
  border-radius: var(--radius-sm);
  background: var(--sand);
  border-left: 3px solid var(--gold);
  font-size: 0.875rem;
  color: #92400E;
  line-height: 1.5;
}

.memo-icon {
  flex-shrink: 0;
  font-size: 0.9rem;
}

.memo-text {
  flex: 1;
  min-width: 0;
  word-break: break-word;
  white-space: pre-line;
}

[data-theme="dark"] .memo-bar {
  background: rgba(251, 191, 36, 0.1);
  color: var(--gold);
}

/* --- Credential Card --- */
.card {
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 20px;
}

.card-row {
  padding: 16px 20px;
  border-bottom: 1px solid rgba(14, 165, 233, 0.08);
}

.card-row:last-child {
  border-bottom: none;
}

.card-label {
  font-size: 0.78rem;
  color: var(--slate);
  font-weight: 600;
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.card-hint {
  font-size: 0.75rem;
  color: var(--slate-light);
  margin-top: 6px;
  line-height: 1.4;
}

.card-value-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.card-value {
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--deep);
  word-break: break-all;
  flex: 1;
  min-width: 0;
}

.card-value.masked {
  letter-spacing: 2px;
}

.btn-copy {
  padding: 6px 14px;
  background: rgba(14, 165, 233, 0.10);
  color: var(--sky);
  border: 1px solid rgba(14, 165, 233, 0.15);
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
  flex-shrink: 0;
}

.btn-copy:hover {
  background: var(--sky);
  color: white;
  border-color: var(--sky);
  box-shadow: 0 2px 12px rgba(14, 165, 233, 0.25);
}

.btn-copy.copied {
  background: var(--green);
  color: white;
  border-color: var(--green);
}

.btn-show {
  padding: 6px 10px;
  background: transparent;
  color: var(--slate-light);
  border: 1px solid rgba(14, 165, 233, 0.15);
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  cursor: pointer;
  transition: all var(--transition);
  flex-shrink: 0;
}

.btn-show:hover {
  border-color: var(--sky);
  color: var(--sky);
}

/* --- TOTP Section --- */
.totp-section {
  text-align: center;
  padding: 20px 20px 16px;
  background: linear-gradient(180deg, rgba(14, 165, 233, 0.03) 0%, transparent 100%);
}

.totp-code {
  font-family: var(--font-mono);
  font-size: 2.2rem;
  font-weight: 700;
  letter-spacing: 6px;
  color: var(--deep);
  margin: 8px 0 14px;
  text-shadow: 0 1px 2px rgba(14, 165, 233, 0.08);
}

.totp-code span {
  margin: 0 2px;
}

.totp-timer-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-bottom: 14px;
}

.totp-bar-wrap {
  flex: 1;
  max-width: 200px;
  height: 6px;
  background: rgba(14, 165, 233, 0.10);
  border-radius: 3px;
  overflow: hidden;
}

.totp-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--teal), var(--cyan), var(--sky));
  border-radius: 3px;
  transition: width 0.3s linear;
}

.totp-bar.urgent {
  background: linear-gradient(90deg, var(--amber), var(--coral), var(--red));
}

.totp-seconds {
  font-size: 0.85rem;
  color: var(--slate);
  font-variant-numeric: tabular-nums;
  min-width: 40px;
}

.totp-seconds.urgent {
  color: var(--amber);
  font-weight: 600;
}

/* --- Guide Section --- */
.guide {
  border-radius: var(--radius);
  padding: 24px 20px;
  margin-bottom: 20px;
}

.guide h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--deep);
  margin-bottom: 16px;
}

.guide-step {
  display: flex;
  gap: 12px;
  margin-bottom: 18px;
}

.guide-step:last-child {
  margin-bottom: 0;
}

.step-num {
  width: 28px;
  height: 28px;
  background: linear-gradient(135deg, var(--sky), var(--cyan));
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 1px;
  box-shadow: 0 2px 8px rgba(14, 165, 233, 0.25);
}

.step-text {
  font-size: 0.9rem;
  color: var(--slate);
  line-height: 1.65;
}

.step-text strong {
  color: var(--deep);
}

.step-link {
  color: var(--sky);
  text-decoration: none;
  font-weight: 500;
}

.step-link:hover {
  text-decoration: underline;
  color: var(--deep2);
}

.step-warn {
  color: var(--amber);
  font-size: 0.85rem;
  font-weight: 500;
}

/* --- Net Tip --- */
.net-tip {
  border-radius: var(--radius);
  padding: 20px 20px;
  margin-bottom: 20px;
  border-left: 3px solid var(--amber);
}

.net-tip h3 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--deep);
  margin-bottom: 8px;
}

.net-tip p {
  font-size: 0.875rem;
  color: var(--slate);
  line-height: 1.7;
}

.net-tip p strong {
  color: var(--deep);
}

/* --- Links Section --- */
.links {
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 20px;
}

.links h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--deep);
  padding: 20px 20px 12px;
}

.link-item {
  display: flex;
  align-items: center;
  padding: 14px 20px;
  color: var(--sky);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  border-top: 1px solid rgba(14, 165, 233, 0.08);
  transition: background var(--transition);
  gap: 10px;
}

.link-item:hover {
  background: rgba(14, 165, 233, 0.06);
}

.link-item svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.link-item .link-arrow {
  margin-left: auto;
  color: var(--slate-light);
}

/* --- Expiry Notice (subtle footer line) --- */
.expiry {
  text-align: center;
  color: var(--slate-light);
  font-size: 0.72rem;
  padding: 12px 0 20px;
  opacity: 0.55;
  letter-spacing: 0.02em;
  line-height: 1.6;
}

.expiry .date {
  color: var(--slate);
  font-weight: 500;
}

.expiry .sep {
  margin: 0 4px;
  opacity: 0.6;
}

/* --- Error State --- */
.error-page {
  text-align: center;
  padding: 60px 20px;
}

.error-icon {
  font-size: 3rem;
  margin-bottom: 16px;
  opacity: 0.6;
}

.error-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--deep);
  margin-bottom: 8px;
}

.error-desc {
  color: var(--slate);
  font-size: 0.9rem;
  margin-bottom: 24px;
}

.btn-home {
  display: inline-block;
  padding: 12px 28px;
  background: linear-gradient(135deg, var(--sky), var(--cyan));
  color: white;
  text-decoration: none;
  border: none;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition);
}

.btn-home:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(14, 165, 233, 0.35);
}

/* --- Loading --- */
.loading {
  text-align: center;
  padding: 80px 20px;
  color: var(--slate);
}

.spinner {
  width: 36px;
  height: 36px;
  border: 3px solid rgba(14, 165, 233, 0.15);
  border-top-color: var(--sky);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 0 auto 16px;
}

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

/* --- Rate Limited --- */
.rate-limited .error-icon {
  color: var(--amber);
  opacity: 1;
}

/* --- Toast --- */
.toast {
  position: fixed;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%) translateY(80px);
  background: var(--deep);
  color: white;
  padding: 10px 24px;
  border-radius: 24px;
  font-size: 0.85rem;
  font-weight: 500;
  box-shadow: 0 4px 20px rgba(0,0,0,0.15);
  transition: transform 0.3s ease;
  z-index: 100;
  pointer-events: none;
}

.toast.show {
  transform: translateX(-50%) translateY(0);
}

/* --- Responsive --- */

/* 桌面端加宽 */
@media (min-width: 768px) {
  .container {
    max-width: 620px;
  }

  .code-input-wrap {
    max-width: 420px;
  }

  .totp-code {
    font-size: 2.5rem;
    letter-spacing: 8px;
  }
}

@media (min-width: 1024px) {
  .container {
    max-width: 680px;
    padding: 32px 24px 56px;
  }

  .home {
    padding-top: 24px;
  }

  .home-title {
    font-size: 1.8rem;
  }

  .card-row {
    padding: 18px 24px;
  }

  .guide, .links h3 {
    padding-left: 24px;
    padding-right: 24px;
  }

  .link-item {
    padding: 14px 24px;
  }
}

/* 移动端 */
@media (max-width: 640px) {
  .container {
    padding: 16px 16px 40px;
    max-width: 100%;
  }

  .home {
    padding-top: 12px;
  }

  .home-title {
    font-size: 1.3rem;
  }

  .code-input-wrap {
    max-width: 100%;
  }

  .code-input {
    padding: 12px 14px;
    font-size: 1rem;
  }

  .btn-go {
    padding: 12px 22px;
  }

  .account-username {
    font-size: 1.2rem;
  }

  .totp-code {
    font-size: 1.7rem;
    letter-spacing: 4px;
  }

  .card-row {
    padding: 14px 16px;
  }

  .guide {
    padding: 20px 16px;
  }

  .links h3 {
    padding-left: 16px;
    padding-right: 16px;
  }

  .link-item {
    padding: 12px 16px;
  }

  .decor-orb {
    display: none;
  }
}

/* --- Animations --- */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

.fade-in {
  animation: fadeIn 0.35s ease;
}

/* --- Hidden utility --- */
.hidden {
  display: none !important;
}

/* ============================================================
   Navbar
   ============================================================ */
.navbar {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  background: rgba(240, 249, 255, 0.7);
  border-bottom: 1px solid rgba(14, 165, 233, 0.08);
}

.navbar-inner {
  max-width: 680px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 20px;
}

.navbar-brand {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--deep);
  text-decoration: none;
  letter-spacing: 0;
  transition: color var(--transition);
}

.navbar-brand:hover {
  color: var(--sky);
}

.navbar-right {
  display: flex;
  align-items: center;
  gap: 8px;
}

.lang-switch {
  display: flex;
  background: rgba(14, 165, 233, 0.08);
  border-radius: 8px;
  overflow: hidden;
}

.lang-btn {
  padding: 4px 10px;
  border: none;
  background: transparent;
  color: var(--slate);
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
}

.lang-btn.active {
  background: var(--sky);
  color: white;
}

.lang-btn:hover:not(.active) {
  color: var(--sky);
}

.theme-btn {
  width: 32px;
  height: 32px;
  border: none;
  background: rgba(14, 165, 233, 0.08);
  border-radius: 8px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  transition: all var(--transition);
}

.theme-btn:hover {
  background: rgba(14, 165, 233, 0.15);
}

/* ============================================================
   Stars Background (Dark Mode)
   ============================================================ */
/* 三层星空：近景亮星（稀疏）+ 中景 + 远景微星（密但暗） */
.stars-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -2;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.8s ease;
}

.stars-bg::before,
.stars-bg::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

/* 近景：少量亮星 + 闪烁 */
.stars-bg::before {
  background:
    radial-gradient(1.5px 1.5px at 8% 12%, rgba(255,255,255,0.9), transparent),
    radial-gradient(1px 1px at 32% 28%, rgba(200,220,255,0.7), transparent),
    radial-gradient(2px 2px at 65% 8%, rgba(255,250,230,0.85), transparent),
    radial-gradient(1px 1px at 85% 35%, rgba(200,215,255,0.6), transparent),
    radial-gradient(1.5px 1.5px at 18% 62%, rgba(255,255,255,0.7), transparent),
    radial-gradient(1px 1px at 72% 70%, rgba(220,230,255,0.5), transparent),
    radial-gradient(2px 2px at 45% 88%, rgba(255,250,240,0.8), transparent),
    radial-gradient(1px 1px at 92% 78%, rgba(200,220,255,0.6), transparent);
  animation: twinkle-slow 8s ease-in-out infinite alternate;
}

/* 远景：微小暗星，营造深邃感 */
.stars-bg::after {
  background:
    radial-gradient(0.5px 0.5px at 5% 35%, rgba(255,255,255,0.25), transparent),
    radial-gradient(0.5px 0.5px at 15% 80%, rgba(255,255,255,0.2), transparent),
    radial-gradient(0.5px 0.5px at 28% 50%, rgba(200,210,255,0.2), transparent),
    radial-gradient(0.5px 0.5px at 38% 15%, rgba(255,255,255,0.15), transparent),
    radial-gradient(0.5px 0.5px at 52% 42%, rgba(255,255,255,0.2), transparent),
    radial-gradient(0.5px 0.5px at 60% 55%, rgba(200,215,255,0.18), transparent),
    radial-gradient(0.5px 0.5px at 75% 22%, rgba(255,255,255,0.2), transparent),
    radial-gradient(0.5px 0.5px at 82% 58%, rgba(255,255,255,0.15), transparent),
    radial-gradient(0.5px 0.5px at 48% 72%, rgba(200,220,255,0.2), transparent),
    radial-gradient(0.5px 0.5px at 95% 90%, rgba(255,255,255,0.18), transparent),
    radial-gradient(0.5px 0.5px at 22% 95%, rgba(255,255,255,0.15), transparent),
    radial-gradient(0.5px 0.5px at 68% 92%, rgba(200,210,255,0.2), transparent);
  animation: twinkle-faint 12s ease-in-out infinite alternate-reverse;
}

@keyframes twinkle-slow {
  0% { opacity: 0.7; }
  100% { opacity: 1; }
}

@keyframes twinkle-faint {
  0% { opacity: 0.5; }
  100% { opacity: 0.8; }
}

/* ============================================================
   Dark Theme — Hawaiian Starry Night
   ============================================================ */
[data-theme="dark"] {
  --sky: #38BDF8;
  --sky-light: #7DD3FC;
  --ocean: #0EA5E9;
  --cyan: #22D3EE;
  --teal: #2DD4BF;
  --ice: #0F172A;
  --ice2: #1E293B;
  --ice3: #0F172A;
  --white: #1E293B;
  --deep: #E2E8F0;
  --deep2: #7DD3FC;
  --slate: #94A3B8;
  --slate-light: #64748B;
  --glass-bg: rgba(30, 41, 59, 0.75);
  --glass-border: rgba(56, 189, 248, 0.12);
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.2);
  --shadow-glow: 0 0 40px rgba(56, 189, 248, 0.06);
}

[data-theme="dark"] body {
  background:
    radial-gradient(ellipse at 20% 80%, rgba(56, 100, 180, 0.06) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 20%, rgba(100, 60, 160, 0.04) 0%, transparent 50%),
    linear-gradient(170deg, #080E1A 0%, #0B1120 25%, #0D1528 50%, #0A0F1E 100%);
  color: #E2E8F0;
}

[data-theme="dark"] .wave-bg { opacity: 0.05; }
[data-theme="dark"] .stars-bg { opacity: 1; }

[data-theme="dark"] .navbar {
  background: rgba(15, 23, 42, 0.8);
  border-bottom-color: rgba(56, 189, 248, 0.1);
}

[data-theme="dark"] .lang-switch {
  background: rgba(56, 189, 248, 0.1);
}

[data-theme="dark"] .theme-btn {
  background: rgba(56, 189, 248, 0.1);
}

[data-theme="dark"] .code-input {
  background: rgba(30, 41, 59, 0.8);
  border-color: rgba(56, 189, 248, 0.2);
  color: #E2E8F0;
}

[data-theme="dark"] .code-input::placeholder {
  color: #64748B;
}

[data-theme="dark"] .btn-copy {
  background: rgba(56, 189, 248, 0.12);
  border-color: rgba(56, 189, 248, 0.2);
}

[data-theme="dark"] .btn-show {
  border-color: rgba(56, 189, 248, 0.2);
  color: #64748B;
}

[data-theme="dark"] .totp-section {
  background: linear-gradient(180deg, rgba(56, 189, 248, 0.05) 0%, transparent 100%);
}

[data-theme="dark"] .card-row {
  border-bottom-color: rgba(56, 189, 248, 0.08);
}

[data-theme="dark"] .link-item {
  border-top-color: rgba(56, 189, 248, 0.08);
}

[data-theme="dark"] .link-item:hover {
  background: rgba(56, 189, 248, 0.06);
}

[data-theme="dark"] .net-tip {
  border-left-color: var(--amber);
}

[data-theme="dark"] .home-hint code {
  background: rgba(56, 189, 248, 0.1);
}

[data-theme="dark"] .toast {
  background: #E2E8F0;
  color: #0F172A;
}

[data-theme="dark"] .decor-orb-1 {
  background: radial-gradient(circle, rgba(56, 189, 248, 0.04) 0%, transparent 70%);
}
[data-theme="dark"] .decor-orb-2 {
  background: radial-gradient(circle, rgba(120, 80, 200, 0.04) 0%, transparent 70%);
}
[data-theme="dark"] .decor-orb-3 {
  background: radial-gradient(circle, rgba(45, 212, 191, 0.03) 0%, transparent 70%);
}

[data-theme="dark"] .spinner {
  border-color: rgba(56, 189, 248, 0.15);
  border-top-color: var(--sky);
}