/* ============================================================
   iOS 26 Liquid Glass — Weibo-Qiandao Web
   液态玻璃设计：光折射、虹彩光晕、多层深度、动态呼吸
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300..700&display=swap');

/* ---- 动画关键帧 ---- */
@keyframes liquidBreathe {
  0%, 100% { transform: scale(1) rotate(0deg); opacity: 0.5; }
  33% { transform: scale(1.05) rotate(0.5deg); opacity: 0.65; }
  66% { transform: scale(0.97) rotate(-0.3deg); opacity: 0.45; }
}

@keyframes iridescentShift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

@keyframes prismDrift {
  0% { transform: translate(0, 0) scale(1); }
  25% { transform: translate(30px, -20px) scale(1.1); }
  50% { transform: translate(-20px, 30px) scale(0.95); }
  75% { transform: translate(15px, -30px) scale(1.05); }
  100% { transform: translate(0, 0) scale(1); }
}

@keyframes glassShimmer {
  0% { transform: translateX(-100%) rotate(15deg); }
  100% { transform: translateX(200%) rotate(15deg); }
}

@keyframes floatUp {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

@keyframes fadeSlideIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes pulseGlow {
  0%, 100% { opacity: 0.6; }
  50% { opacity: 1; }
}

:root {
  color-scheme: light;
  --liquid-bg: rgba(255, 255, 255, 0.35);
  --liquid-bg-hover: rgba(255, 255, 255, 0.55);
  --liquid-border: rgba(255, 255, 255, 0.50);
  --liquid-border-strong: rgba(255, 255, 255, 0.70);
  --liquid-shadow: 0 8px 32px rgba(0, 0, 0, 0.06), 0 2px 8px rgba(0, 0, 0, 0.03), inset 0 1px 0 rgba(255,255,255,0.6);
  --liquid-blur: 24px;
  --liquid-radius: 28px;
  --liquid-radius-sm: 20px;
  --liquid-radius-xs: 14px;

  --text-primary: #1c1c1e;
  --text-secondary: #6c6c70;
  --text-tertiary: #aeaeb2;

  --accent: #007aff;
  --accent-hover: #0062d6;
  --accent-glow: rgba(0, 122, 255, 0.30);

  --green: #34c759;
  --green-bg: rgba(52, 199, 89, 0.15);
  --red: #ff3b30;
  --red-bg: rgba(255, 59, 48, 0.12);
  --orange: #ff9500;
  --orange-bg: rgba(255, 149, 0, 0.15);
  --yellow: #ffcc02;
  --purple: #af52de;
  --pink: #ff2d55;

  --danger: var(--red);
  --danger-hover: #d62d24;

  --log-bg: rgba(28, 28, 30, 0.92);
  --log-text: #30d158;
  --log-radius: 14px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Outfit", -apple-system, "Helvetica Neue", "SF Pro Display", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text-primary);
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  background: linear-gradient(170deg, #f5f5f7 0%, #e8ecf4 40%, #e0e5ef 100%);
  position: relative;
  overflow-x: hidden;
}

/* ---- 背景液态光晕 ---- */
body::before,
body::after {
  content: '';
  position: fixed;
  pointer-events: none;
  z-index: 0;
  border-radius: 50%;
  filter: blur(80px);
  will-change: transform;
}

body::before {
  width: 500px;
  height: 500px;
  top: -120px;
  right: -80px;
  background: radial-gradient(circle, rgba(0, 122, 255, 0.20), rgba(175, 82, 222, 0.15), transparent 70%);
  animation: prismDrift 18s ease-in-out infinite;
}

body::after {
  width: 450px;
  height: 450px;
  bottom: -100px;
  left: -100px;
  background: radial-gradient(circle, rgba(255, 149, 0, 0.15), rgba(255, 45, 85, 0.08), transparent 70%);
  animation: prismDrift 22s ease-in-out infinite reverse;
}

/* ---- 额外背景光晕层 (通过 JS 或额外伪元素) ---- */
.app {
  max-width: 1220px;
  margin: 0 auto;
  padding: 28px 20px;
  position: relative;
  z-index: 1;
}

/* ============================================
   液态玻璃通用混合
   ============================================ */
.liquid-glass {
  background: var(--liquid-bg);
  border: 1px solid var(--liquid-border);
  border-radius: var(--liquid-radius);
  box-shadow: var(--liquid-shadow);
  backdrop-filter: blur(var(--liquid-blur));
  -webkit-backdrop-filter: blur(var(--liquid-blur));
  position: relative;
  overflow: hidden;
  transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* 顶部高光反射 */
.liquid-glass::before {
  content: '';
  position: absolute;
  top: -80%;
  left: -80%;
  width: 260%;
  height: 260%;
  background: radial-gradient(circle at 25% 20%, rgba(255,255,255,0.55) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}

/* 底部边缘光折射 */
.liquid-glass::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 10%;
  right: 10%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
  pointer-events: none;
  z-index: 0;
}

.liquid-glass > * {
  position: relative;
  z-index: 1;
}

.liquid-glass:hover {
  background: var(--liquid-bg-hover);
  border-color: var(--liquid-border-strong);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.08), 0 4px 12px rgba(0, 0, 0, 0.04), inset 0 1px 0 rgba(255,255,255,0.7);
}

/* ---- Header ---- */
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  margin-bottom: 28px;
  padding: 20px 24px;
  background: var(--liquid-bg);
  border: 1px solid var(--liquid-border);
  border-radius: var(--liquid-radius);
  box-shadow: var(--liquid-shadow);
  backdrop-filter: blur(var(--liquid-blur));
  -webkit-backdrop-filter: blur(var(--liquid-blur));
  position: relative;
  overflow: hidden;
}

/* header 高光 */
header::before {
  content: '';
  position: absolute;
  top: -60%;
  left: -60%;
  width: 220%;
  height: 220%;
  background: radial-gradient(circle at 20% 15%, rgba(255,255,255,0.50) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}

/* header 底部虹彩光晕 */
header::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg,
    transparent,
    rgba(0, 122, 255, 0.25),
    rgba(175, 82, 222, 0.20),
    rgba(255, 149, 0, 0.15),
    transparent
  );
  background-size: 200% 100%;
  animation: iridescentShift 6s ease-in-out infinite;
  pointer-events: none;
  z-index: 0;
}

header > * { position: relative; z-index: 1; }

header h1 {
  font-size: 26px;
  font-weight: 700;
  letter-spacing: -0.5px;
  margin: 0 0 4px;
  background: linear-gradient(135deg, #007aff 0%, #5856d6 50%, #af52de 100%);
  background-size: 200% 200%;
  animation: iridescentShift 4s ease-in-out infinite;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

header p {
  margin: 0;
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 400;
}

/* ---- Glass Panel ---- */
.panel {
  background: var(--liquid-bg);
  border: 1px solid var(--liquid-border);
  border-radius: var(--liquid-radius);
  padding: 22px 24px;
  box-shadow: var(--liquid-shadow);
  backdrop-filter: blur(var(--liquid-blur));
  -webkit-backdrop-filter: blur(var(--liquid-blur));
  margin-bottom: 20px;
  transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  position: relative;
  overflow: hidden;
}

/* 面板顶部微光 */
.panel::before {
  content: '';
  position: absolute;
  top: -80%;
  left: -80%;
  width: 260%;
  height: 260%;
  background: radial-gradient(circle at 20% 10%, rgba(255,255,255,0.45) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}

/* 面板底部边缘虹彩 */
.panel::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 5%;
  right: 5%;
  height: 2px;
  background: linear-gradient(90deg,
    transparent,
    rgba(0, 122, 255, 0.15),
    rgba(175, 82, 222, 0.12),
    rgba(255, 149, 0, 0.08),
    transparent
  );
  background-size: 200% 100%;
  animation: iridescentShift 8s ease-in-out infinite;
  pointer-events: none;
  z-index: 0;
}

.panel > * { position: relative; z-index: 1; }

.panel:hover {
  background: var(--liquid-bg-hover);
  border-color: var(--liquid-border-strong);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.08), 0 4px 12px rgba(0, 0, 0, 0.04), inset 0 1px 0 rgba(255,255,255,0.7);
}

/* ---- Typography ---- */
h1, h2, p { margin-top: 0; }
h1 { font-size: 28px; }
h2 {
  font-size: 19px;
  font-weight: 600;
  letter-spacing: -0.3px;
  color: var(--text-primary);
}
header p, .hint {
  color: var(--text-secondary);
  font-size: 13px;
}
.hint { line-height: 1.5; }

/* ---- Grid ---- */
.grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 24px;
  align-items: start;
}

.accounts-panel, .qr-panel, .account-card, .empty-card {
  min-width: 0;
}

/* ---- Form Row ---- */
.form-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

/* ---- 液态玻璃输入框 ---- */
input {
  border: 1.5px solid rgba(60, 60, 67, 0.12);
  border-radius: var(--liquid-radius-xs);
  padding: 10px 14px;
  font-size: 15px;
  background: rgba(255, 255, 255, 0.65);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  color: var(--text-primary);
  outline: none;
  transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  font-family: inherit;
  box-shadow: inset 0 1px 3px rgba(0,0,0,0.04);
}

input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow), inset 0 1px 3px rgba(0,0,0,0.02);
  background: rgba(255, 255, 255, 0.85);
}

input::placeholder {
  color: var(--text-tertiary);
}

/* ---- 液态玻璃按钮 ---- */
button {
  border: 0;
  border-radius: var(--liquid-radius-xs);
  padding: 10px 20px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  font-family: inherit;
  background: var(--accent);
  color: white;
  letter-spacing: 0.3px;
  position: relative;
  overflow: hidden;
  -webkit-tap-highlight-color: transparent;
}

/* 按钮玻璃高光 */
button::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.20) 0%, transparent 45%);
  pointer-events: none;
  border-radius: inherit;
}

button:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px var(--accent-glow);
}

button:active {
  transform: scale(0.96);
  box-shadow: 0 2px 8px var(--accent-glow);
}

button.danger {
  background: linear-gradient(135deg, var(--danger), #e03028);
}

button.danger:hover {
  background: linear-gradient(135deg, var(--danger-hover), #c02520);
  box-shadow: 0 6px 20px rgba(255, 59, 48, 0.35);
}

button.ghost {
  background: rgba(0, 122, 255, 0.10);
  color: var(--accent);
  font-weight: 500;
  backdrop-filter: blur(4px);
}

button.ghost:hover {
  background: rgba(0, 122, 255, 0.18);
  box-shadow: none;
  transform: none;
}

button.small {
  padding: 6px 12px;
  font-size: 12px;
  border-radius: 10px;
}

/* ---- Settings Summary (details) ---- */
.settings-summary {
  cursor: pointer;
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  padding: 4px 0;
  user-select: none;
  transition: color 0.2s;
}

.settings-summary:hover {
  color: var(--accent);
}

.settings-row label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--text-secondary);
  font-size: 14px;
}

.summary-email-row {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid rgba(60, 60, 67, 0.08);
}

.summary-email-row input:not([type="checkbox"]) {
  min-width: 260px;
  flex: 1;
}

/* ---- Panel Title Row ---- */
.panel-title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}

.panel-title-row h2 { margin: 0; }

/* ---- Accounts List ---- */
.accounts {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

/* ---- 液态玻璃账号卡片 ---- */
.account-card, .empty-card {
  border: 1px solid rgba(255, 255, 255, 0.45);
  border-radius: 22px;
  padding: 16px 18px;
  background: rgba(255, 255, 255, 0.30);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: all 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  position: relative;
  overflow: hidden;
  box-shadow: 0 4px 16px rgba(0,0,0,0.04), inset 0 1px 0 rgba(255,255,255,0.5);
}

/* 卡片微光 */
.account-card::before {
  content: '';
  position: absolute;
  top: -60%;
  left: -60%;
  width: 220%;
  height: 220%;
  background: radial-gradient(circle at 25% 15%, rgba(255,255,255,0.35) 0%, transparent 45%);
  pointer-events: none;
  z-index: 0;
}

.account-card > * { position: relative; z-index: 1; }

.account-card:hover {
  background: rgba(255, 255, 255, 0.45);
  border-color: rgba(255, 255, 255, 0.65);
  box-shadow: 0 8px 24px rgba(0,0,0,0.06), 0 2px 8px rgba(0,0,0,0.03), inset 0 1px 0 rgba(255,255,255,0.6);
  transform: translateY(-1px);
}

.account-card.collapsed {
  border-color: rgba(52, 199, 89, 0.30);
  background: rgba(52, 199, 89, 0.08);
}

.account-card.collapsed:hover {
  background: rgba(52, 199, 89, 0.14);
}

.account-card.duplicate {
  border-color: rgba(255, 59, 48, 0.25);
  background: rgba(255, 59, 48, 0.06);
}

.account-card.duplicate:hover {
  background: rgba(255, 59, 48, 0.12);
}

/* ---- Account Main Row ---- */
.account-main {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
}

.identity {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
  flex: 1;
}

/* ---- 液态玻璃头像 ---- */
.avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: white;
  font-weight: 700;
  font-size: 17px;
  background: linear-gradient(135deg, #007aff, #5856d6, #af52de);
  background-size: 200% 200%;
  animation: iridescentShift 5s ease-in-out infinite;
  box-shadow: 0 4px 16px rgba(0, 122, 255, 0.35), 0 0 0 2px rgba(255,255,255,0.3);
  flex-shrink: 0;
  position: relative;
}

/* 头像玻璃高光 */
.avatar::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 25%, rgba(255,255,255,0.35) 0%, transparent 50%);
  pointer-events: none;
}

/* ---- Name Edit ---- */
.name-edit {
  font-size: 16px;
  font-weight: 600;
  flex: 1;
  width: 100%;
  min-width: 160px;
  border: 1.5px solid transparent;
  background: transparent;
  padding: 6px 8px;
  border-radius: 10px;
  transition: all 0.25s ease;
}

.name-edit:focus {
  border-color: var(--accent);
  background: rgba(255, 255, 255, 0.80);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.account-sub {
  margin-top: 4px;
  color: var(--text-secondary);
  font-size: 12px;
}

/* ---- Switch ---- */
.switch {
  white-space: nowrap;
  color: var(--text-secondary);
  font-size: 13px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.switch input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--green);
  cursor: pointer;
}

/* ---- Meta Grid ---- */
.meta {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  color: var(--text-secondary);
  margin: 12px 0;
  font-size: 13px;
}

.meta input {
  padding: 6px 10px;
  font-size: 13px;
  border-radius: 10px;
}

/* ---- Actions ---- */
.actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

/* ---- 液态玻璃通知配置框 / 日志框 ---- */
.notify-config, .account-log-box {
  margin-top: 14px;
  padding: 14px 16px;
  border: 1px solid rgba(255, 255, 255, 0.35);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.25);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.4);
  transition: background 0.3s ease;
}

.notify-config h3, .account-log-box h3 {
  margin: 0 0 8px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
}

.account-log-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}

.account-log-head h3 { margin: 0; }

.notify-config .hint {
  margin-bottom: 10px;
  font-size: 12px;
}

.notify-config input:not([type="checkbox"]) {
  min-width: 160px;
  flex: 1;
}

.email-row {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid rgba(60, 60, 67, 0.06);
}

/* ---- Utility ---- */
.hidden { display: none; }

/* ---- 液态玻璃徽章 ---- */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.2px;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  border: 0.5px solid rgba(255,255,255,0.3);
}

.badge.ok {
  color: #047857;
  background: var(--green-bg);
}

.badge.warn {
  color: #a16207;
  background: var(--orange-bg);
}

.badge.bad {
  color: #b91c1c;
  background: var(--red-bg);
}

/* ---- 液态玻璃 QR Box ---- */
.qr-box {
  min-height: 360px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  border: 1.5px dashed rgba(255, 255, 255, 0.40);
  border-radius: var(--liquid-radius-sm);
  background: rgba(255, 255, 255, 0.20);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  padding: 20px;
  position: relative;
  overflow: hidden;
  transition: all 0.35s ease;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.3);
}

.qr-box::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at 30% 20%, rgba(255,255,255,0.25) 0%, transparent 45%);
  pointer-events: none;
  z-index: 0;
}

.qr-box > * { position: relative; z-index: 1; }

.qr-box.empty {
  color: var(--text-tertiary);
  font-size: 15px;
  gap: 10px;
  justify-content: center;
  align-items: center;
}

.qr-box.empty::after {
  content: '📱';
  font-size: 36px;
  opacity: 0.4;
}

.qr-box:not(.empty) {
  border-style: solid;
  border-color: var(--liquid-border);
  background: var(--liquid-bg);
  backdrop-filter: blur(var(--liquid-blur));
  -webkit-backdrop-filter: blur(var(--liquid-blur));
  padding: 20px;
  gap: 10px;
  justify-content: center;
  align-items: center;
  min-height: 420px;
}

.qr-frame {
  width: 100%;
  max-width: 260px;
  aspect-ratio: 1 / 1;
  object-fit: contain;
  display: block;
  border: 0;
  border-radius: 18px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12), 0 2px 8px rgba(0, 0, 0, 0.04);
  background: white;
  flex-shrink: 0;
}

.qr-box .qr-account-id {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  margin: 0;
}

.qr-box .qr-open-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: white;
  background: var(--accent);
  font-weight: 600;
  font-size: 13px;
  text-decoration: none;
  padding: 8px 18px;
  border-radius: 999px;
  transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  position: relative;
  overflow: hidden;
}

.qr-box .qr-open-link::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.20) 0%, transparent 45%);
  pointer-events: none;
  border-radius: inherit;
}

.qr-box .qr-open-link:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px var(--accent-glow);
  text-decoration: none;
}

.qr-box .qr-hint {
  font-size: 12px;
  line-height: 1.5;
  color: var(--text-tertiary);
  margin: 0;
  max-width: 280px;
}

/* ---- 液态玻璃日志框 ---- */
.logs {
  min-height: 260px;
  max-height: 420px;
  overflow: auto;
  max-width: 100%;
  margin: 0;
  background: var(--log-bg);
  color: var(--log-text);
  border-radius: var(--log-radius);
  padding: 16px;
  font-size: 12.5px;
  line-height: 1.7;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  word-break: break-all;
  font-family: "SF Mono", "Menlo", "Consolas", monospace;
  border: 1px solid rgba(255, 255, 255, 0.06);
  box-shadow: inset 0 2px 12px rgba(0,0,0,0.2);
}

.account-logs {
  min-height: 120px;
  max-height: 260px;
}

/* ---- Scrollbar ---- */
.logs::-webkit-scrollbar {
  width: 4px;
}

.logs::-webkit-scrollbar-track {
  background: transparent;
}

.logs::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.15);
  border-radius: 4px;
}

/* ---- Checkbox ---- */
input[type="checkbox"] {
  accent-color: var(--accent);
  width: 16px;
  height: 16px;
  cursor: pointer;
}

/* ---- Animations ---- */
@keyframes fadeSlideIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.account-card {
  animation: fadeSlideIn 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94) both;
}

.account-card:nth-child(2) { animation-delay: 0.06s; }
.account-card:nth-child(3) { animation-delay: 0.12s; }
.account-card:nth-child(4) { animation-delay: 0.18s; }
.account-card:nth-child(5) { animation-delay: 0.24s; }

/* ---- Refresh Button ---- */
#refreshBtn {
  background: rgba(0, 122, 255, 0.10);
  color: var(--accent);
  font-weight: 500;
  padding: 10px 20px;
  backdrop-filter: blur(4px);
}

#refreshBtn:hover {
  background: rgba(0, 122, 255, 0.18);
  box-shadow: none;
}

/* ---- Checkin All Button ---- */
#checkinAllBtn {
  background: linear-gradient(135deg, var(--green), #28a745);
}

#checkinAllBtn:hover {
  background: linear-gradient(135deg, #2db84e, #219a3a);
  box-shadow: 0 6px 20px rgba(52, 199, 89, 0.40);
}

/* ---- Responsive ---- */
@media (max-width: 820px) {
  header, .account-main { flex-direction: column; align-items: stretch; }
  .grid { grid-template-columns: 1fr; }
  .meta { grid-template-columns: 1fr; }
  header {
    gap: 12px;
    padding: 16px 18px;
    border-radius: 22px;
  }
  header h1 { font-size: 22px; }
  .panel { padding: 18px; border-radius: 22px; }
  .account-card { border-radius: 18px; }
}

/* ---- 小屏额外适配 ---- */
@media (max-width: 480px) {
  .app { padding: 16px 12px; }
  header h1 { font-size: 19px; }
  .panel { padding: 14px 16px; }
  .account-card { padding: 12px 14px; }
  button { padding: 8px 14px; font-size: 14px; }
  input { font-size: 14px; padding: 8px 12px; }
  .qr-frame { max-width: 100%; border-radius: 14px; }
  .qr-box:not(.empty) { min-height: 360px; padding: 14px; }
}