/* ============================================================
   认证页样式（登录 / 注册 / 改密）- 深色科技风
   自包含：复用 dashboard.css 的 CSS 变量配色，但不依赖外部样式
   ============================================================ */
:root {
  --bg-primary: #0a0d14;
  --bg-card: #121826;
  --bg-elevated: #1c2336;
  --border: rgba(58, 122, 254, 0.12);
  --border-gold: rgba(212, 175, 55, 0.3);
  --text-primary: #e8eaf0;
  --text-secondary: #9aa3b8;
  --text-tertiary: #5a6278;
  --red: #ff4d4f;
  --red-soft: #ff6b6d;
  --green: #00c988;
  --green-soft: #34d5a1;
  --gold: #d4af37;
  --gold-soft: #e6c865;
  --cyan: #3a7afe;
  --cyan-soft: #5e96ff;
  --cyan-light: #00d4ff;
  --font-mono: "JetBrains Mono", Consolas, "SF Mono", "Courier New", monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html, body { width: 100%; height: 100%; overflow: hidden; font-family: "PingFang SC", "Microsoft YaHei", sans-serif; }
/* 小屏允许滚动，避免内容被裁切 */
@media (max-width: 768px) {
  html, body { overflow: auto; -webkit-overflow-scrolling: touch; }
}
body {
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 13px;
}

/* ===== 背景（网格 + 渐变光晕，复用入口页风格） ===== */
.auth-bg {
  position: fixed; inset: 0;
  background:
    radial-gradient(ellipse at 20% 30%, rgba(255, 77, 79, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 70%, rgba(58, 122, 254, 0.10) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 100%, rgba(212, 175, 55, 0.06) 0%, transparent 60%),
    linear-gradient(180deg, #0a0d14 0%, #05070c 100%);
  z-index: 0;
}
.auth-bg::before {
  content: '';
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(58, 122, 254, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(58, 122, 254, 0.05) 1px, transparent 1px);
  background-size: 48px 48px;
  -webkit-mask-image: radial-gradient(ellipse at center, #000 30%, transparent 80%);
          mask-image: radial-gradient(ellipse at center, #000 30%, transparent 80%);
}

/* ===== 容器（居中卡片） ===== */
.auth-container {
  position: relative; z-index: 2;
  width: 100%; height: 100%;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  padding: 40px 20px;
}

/* ===== Logo（旋转圆环 + MA 字样，复用入口页） ===== */
.auth-logo {
  position: relative;
  width: 96px; height: 96px;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 24px;
}
.auth-logo-ring {
  position: absolute; inset: 0;
  border: 2px solid rgba(212, 175, 55, 0.4);
  border-radius: 50%;
  border-top-color: var(--gold);
  animation: spin 4s linear infinite;
}
.auth-logo-ring.ring2 {
  inset: 12px;
  border-color: rgba(58, 122, 254, 0.3);
  border-top-color: rgba(58, 122, 254, 0.9);
  animation: spin 6s linear infinite reverse;
}
.auth-logo-text {
  font-size: 30px; font-weight: 800; letter-spacing: 2px;
  color: var(--gold);
  text-shadow: 0 0 24px rgba(212, 175, 55, 0.5);
  font-family: var(--font-mono);
}
@keyframes spin {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

.auth-title {
  font-size: 28px; font-weight: 700;
  background: linear-gradient(135deg, #ffffff 0%, var(--gold) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: 4px;
  margin-bottom: 8px;
}
.auth-subtitle {
  font-size: 12px; color: var(--text-tertiary);
  letter-spacing: 2px;
  margin-bottom: 32px;
  font-family: var(--font-mono);
}

/* ===== 卡片 ===== */
.auth-card {
  width: 380px;
  background: rgba(20, 25, 40, 0.7);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 32px 32px 28px;
  backdrop-filter: blur(10px);
  position: relative;
  box-shadow: 0 12px 48px rgba(0, 0, 0, 0.5);
}
.auth-card::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(212, 175, 55, 0.5), transparent);
}

/* 卡片标题 */
.auth-card-title {
  font-size: 16px; font-weight: 700;
  color: var(--gold-soft);
  letter-spacing: 2px;
  margin-bottom: 6px;
  text-align: center;
}
.auth-card-desc {
  font-size: 11px; color: var(--text-tertiary);
  letter-spacing: 1px;
  margin-bottom: 20px;
  text-align: center;
  line-height: 1.6;
}

/* ===== 表单 ===== */
.auth-field {
  margin-bottom: 16px;
}
.auth-field:last-of-type { margin-bottom: 20px; }
.auth-label {
  display: block;
  font-size: 11px;
  color: var(--text-tertiary);
  letter-spacing: 1.2px;
  margin-bottom: 6px;
  font-weight: 600;
}
.auth-input-wrap {
  position: relative;
}
.auth-input {
  width: 100%;
  padding: 10px 14px;
  font-size: 13px;
  font-family: var(--font-mono);
  background: rgba(58, 122, 254, 0.06);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-primary);
  outline: none;
  transition: all 0.2s;
  letter-spacing: 1px;
}
.auth-input::placeholder { color: var(--text-tertiary); }
.auth-input:focus {
  border-color: var(--cyan);
  background: rgba(58, 122, 254, 0.12);
  box-shadow: 0 0 0 3px rgba(58, 122, 254, 0.15);
}
.auth-pwd-toggle {
  position: absolute;
  right: 10px; top: 50%;
  transform: translateY(-50%);
  background: none; border: none;
  color: var(--text-tertiary);
  cursor: pointer;
  font-size: 14px;
  padding: 2px 6px;
  border-radius: 4px;
  transition: color 0.2s;
}
.auth-pwd-toggle:hover { color: var(--cyan-light); }

/* ===== 按钮 ===== */
.auth-btn {
  width: 100%;
  padding: 11px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 2px;
  transition: all 0.2s;
  margin-top: 4px;
  cursor: pointer;
  border: none;
  font-family: inherit;
}
.auth-btn-gold {
  background: linear-gradient(135deg, #c79a25 0%, var(--gold) 100%);
  color: #1a1200;
  box-shadow: 0 4px 16px rgba(212, 175, 55, 0.3);
}
.auth-btn-gold:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(212, 175, 55, 0.5);
}
.auth-btn-cyan {
  background: linear-gradient(135deg, var(--cyan) 0%, var(--cyan-light) 100%);
  color: #fff;
  box-shadow: 0 4px 16px rgba(58, 122, 254, 0.3);
}
.auth-btn-cyan:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(58, 122, 254, 0.5);
}

/* ===== 提示条 ===== */
.auth-alert {
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 12px;
  letter-spacing: 0.5px;
  margin-bottom: 16px;
  line-height: 1.6;
  display: flex; align-items: center; gap: 8px;
}
.auth-alert-error {
  background: linear-gradient(135deg, rgba(255, 77, 79, 0.12), rgba(255, 77, 79, 0.04));
  border: 1px solid rgba(255, 77, 79, 0.35);
  color: var(--red-soft);
  border-left: 3px solid var(--red-soft);
}
.auth-alert-success {
  background: linear-gradient(135deg, rgba(0, 201, 136, 0.12), rgba(0, 201, 136, 0.04));
  border: 1px solid rgba(0, 201, 136, 0.35);
  color: var(--green-soft);
  border-left: 3px solid var(--green-soft);
}
.auth-alert-warn {
  background: linear-gradient(135deg, rgba(212, 175, 55, 0.10), rgba(212, 175, 55, 0.03));
  border: 1px solid rgba(212, 175, 55, 0.35);
  color: var(--gold-soft);
  border-left: 3px solid var(--gold);
}

/* ===== 底部链接 ===== */
.auth-footer-link {
  text-align: center;
  margin-top: 20px;
  font-size: 12px;
  color: var(--text-tertiary);
  letter-spacing: 0.5px;
}
.auth-footer-link a {
  color: var(--cyan-soft);
  text-decoration: none;
  margin-left: 4px;
  transition: color 0.2s;
}
.auth-footer-link a:hover { color: var(--cyan-light); }

/* ===== 页脚版权 ===== */
.auth-page-footer {
  position: absolute;
  bottom: 24px;
  font-size: 11px; color: var(--text-tertiary);
  letter-spacing: 1px;
  text-align: center;
  padding: 0 16px;
}

/* ============================================================
   响应式适配：移动端 (<= 768px)
   ============================================================ */
@media (max-width: 768px) {
  .auth-container { padding: 24px 16px 40px; justify-content: flex-start; }
  .auth-logo { width: 72px; height: 72px; margin-bottom: 16px; }
  .auth-logo-text { font-size: 24px; }
  .auth-title { font-size: 22px; letter-spacing: 2px; margin-bottom: 4px; }
  .auth-subtitle { font-size: 10px; letter-spacing: 1.5px; margin-bottom: 24px; }
  .auth-card {
    width: 100%;
    max-width: 100%;
    padding: 24px 22px 22px;
    border-radius: 12px;
  }
  .auth-card-title { font-size: 15px; }
  .auth-card-desc { font-size: 10px; margin-bottom: 16px; }
  .auth-field { margin-bottom: 14px; }
  .auth-label { font-size: 10px; }
  .auth-input { padding: 12px 14px; font-size: 14px; }  /* iOS 输入框字号 >=16px 防止自动缩放，此处用 14 配合 viewport */
  .auth-btn { padding: 12px; font-size: 13px; letter-spacing: 1.5px; }
  .auth-alert { font-size: 11px; padding: 8px 12px; }
  .auth-footer-link { font-size: 11px; margin-top: 16px; }
  .auth-page-footer {
    position: static;
    margin-top: 24px;
    font-size: 10px;
    line-height: 1.8;
  }
}

/* ============================================================
   超小屏适配：<= 374px (iPhone SE 等)
   ============================================================ */
@media (max-width: 374px) {
  .auth-container { padding: 20px 12px 32px; }
  .auth-logo { width: 60px; height: 60px; margin-bottom: 12px; }
  .auth-logo-text { font-size: 20px; }
  .auth-title { font-size: 18px; letter-spacing: 1px; }
  .auth-subtitle { font-size: 9px; margin-bottom: 18px; }
  .auth-card { padding: 20px 16px 18px; border-radius: 10px; }
  .auth-card-title { font-size: 14px; }
  .auth-input { padding: 10px 12px; font-size: 13px; }
  .auth-btn { padding: 11px; font-size: 12px; }
}

/* ============================================================
   平板适配：769px ~ 1024px
   ============================================================ */
@media (min-width: 769px) and (max-width: 1024px) {
  .auth-card { width: 360px; }
  .auth-title { font-size: 26px; }
}

/* ============================================================
   超宽屏适配：>= 1600px
   ============================================================ */
@media (min-width: 1600px) {
  .auth-logo { width: 112px; height: 112px; margin-bottom: 28px; }
  .auth-logo-text { font-size: 34px; }
  .auth-title { font-size: 34px; letter-spacing: 5px; }
  .auth-subtitle { font-size: 14px; letter-spacing: 3px; margin-bottom: 40px; }
  .auth-card { width: 440px; padding: 40px 40px 36px; }
  .auth-card-title { font-size: 18px; }
  .auth-input { padding: 12px 16px; font-size: 14px; }
  .auth-btn { padding: 13px; font-size: 15px; }
}

/* ============================================================
   横屏移动端适配：高度紧张
   ============================================================ */
@media (max-width: 900px) and (max-height: 500px) and (orientation: landscape) {
  .auth-container { padding: 16px 16px 24px; justify-content: center; }
  .auth-logo { width: 48px; height: 48px; margin-bottom: 8px; }
  .auth-logo-text { font-size: 18px; }
  .auth-title { font-size: 18px; margin-bottom: 2px; }
  .auth-subtitle { margin-bottom: 14px; }
  .auth-card { padding: 18px 18px 16px; }
  .auth-field { margin-bottom: 10px; }
  .auth-input { padding: 9px 12px; font-size: 12px; }
  .auth-btn { padding: 10px; font-size: 12px; }
  .auth-page-footer { display: none; }
}