/* ============================================================
   Ourtennis 论坛 - 内嵌登录弹窗样式
   设计：court blue + tennis yellow + clay 调色板
   ============================================================ */

.f-auth-overlay {
  position: fixed; inset: 0; z-index: 12000;
  background:
    radial-gradient(ellipse 600px 400px at 50% 30%, rgba(31, 58, 104, .35), transparent 70%),
    rgba(15, 30, 61, .55);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex; align-items: center; justify-content: center;
  padding: 24px;
  animation: f-auth-overlay-in .25s ease-out;
}
.f-auth-overlay[hidden] { display: none !important; }
@keyframes f-auth-overlay-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}

.f-auth-card {
  width: 100%; max-width: 420px;
  background: var(--f-bg-elevated);
  border-radius: var(--f-radius-lg);
  border: 1px solid var(--f-border);
  box-shadow: var(--f-shadow-pop);
  position: relative;
  overflow: hidden;
  max-height: 92vh;
  display: flex; flex-direction: column;
  animation: f-auth-card-in .35s cubic-bezier(.34, 1.4, .64, 1);
}
.f-auth-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 4px;
  background: linear-gradient(90deg, var(--f-primary) 0%, var(--f-grass) 35%, var(--f-tennis) 70%, var(--f-clay) 100%);
}
@keyframes f-auth-card-in {
  from { opacity: 0; transform: translateY(8px) scale(.97); }
  to   { opacity: 1; transform: translateY(0)   scale(1); }
}

.f-auth-close {
  position: absolute; top: 12px; right: 14px;
  background: var(--f-bg-soft); border: none;
  width: 32px; height: 32px; border-radius: 50%;
  font-size: 20px; line-height: 1; color: var(--f-text-muted);
  cursor: pointer; transition: all .15s;
  display: flex; align-items: center; justify-content: center;
  z-index: 2;
}
.f-auth-close:hover {
  background: var(--f-primary-tint); color: var(--f-primary); transform: rotate(90deg);
}

/* —— 品牌 —— */
.f-auth-brand {
  display: flex; align-items: center; gap: 10px;
  padding: 22px 26px 14px;
  font-family: var(--f-font-display);
  font-weight: 800; font-size: 18px;
  color: var(--f-primary);
  letter-spacing: -0.015em;
}
.f-auth-brand-ball {
  width: 22px; height: 22px;
  background: radial-gradient(circle, var(--f-tennis) 0%, var(--f-tennis-deep) 80%);
  border-radius: 50%;
  box-shadow: inset 0 0 0 1.5px rgba(255,255,255,.7), 0 2px 6px rgba(181, 194, 52, .35);
  animation: ball-bounce 2.4s ease-in-out infinite;
}

/* —— 中英 tab（互斥）—— */
.f-auth-tabs {
  display: flex;
  padding: 0 26px;
  gap: 0;
  border-bottom: 1px solid var(--f-divider);
}
.f-auth-tab {
  flex: 1;
  background: none; border: none;
  padding: 12px 0; font-size: 14px; font-weight: 700;
  color: var(--f-text-muted); cursor: pointer;
  font-family: var(--f-font-display);
  letter-spacing: -0.01em;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: color .15s, border-color .15s;
}
.f-auth-tab:hover { color: var(--f-text); }
.f-auth-tab--active {
  color: var(--f-primary);
  border-bottom-color: var(--f-primary);
}

/* —— 表单 body —— */
.f-auth-body {
  padding: 22px 26px 26px;
  overflow-y: auto;
}
.f-auth-title {
  font-family: var(--f-font-display);
  font-size: 22px; font-weight: 800;
  color: var(--f-text); letter-spacing: -0.02em;
  margin: 0 0 4px;
}
.f-auth-sub {
  font-size: 13px; color: var(--f-text-muted);
  font-weight: 500; margin-bottom: 18px;
}

/* —— 子菜单（登录/注册/忘记） —— */
.f-auth-submenu {
  display: flex; gap: 4px;
  background: var(--f-bg-soft);
  padding: 4px;
  border-radius: var(--f-radius);
  margin-bottom: 16px;
}
.f-auth-submenu-btn {
  flex: 1;
  background: none; border: none;
  padding: 8px 10px; font-size: 13px; font-weight: 700;
  color: var(--f-text-muted); cursor: pointer;
  border-radius: calc(var(--f-radius) - 4px);
  font-family: inherit;
  transition: all .15s;
}
.f-auth-submenu-btn:hover { color: var(--f-text); }
.f-auth-submenu-btn.is-active {
  background: var(--f-bg-elevated); color: var(--f-primary);
  box-shadow: var(--f-shadow-soft);
}

/* —— 表单字段 —— */
.f-auth-label {
  display: block; font-size: 11px; font-weight: 700;
  margin: 14px 0 6px; color: var(--f-text-muted);
  text-transform: uppercase; letter-spacing: .08em;
}
.f-auth-label:first-of-type { margin-top: 4px; }
.f-auth-input {
  width: 100%;
  padding: 10px 14px; font-size: 14.5px;
  border: 1px solid var(--f-border); border-radius: var(--f-radius);
  background: var(--f-bg);
  color: var(--f-text);
  font-family: inherit; font-weight: 500;
  transition: border-color .15s, box-shadow .15s;
}
.f-auth-input:focus {
  outline: none; border-color: var(--f-primary);
  box-shadow: 0 0 0 3px var(--f-primary-tint);
}
.f-auth-input-row {
  display: flex; gap: 8px;
}
.f-auth-input-row .f-auth-input { flex: 1; }
.f-auth-send-code {
  white-space: nowrap;
  padding: 8px 14px; font-size: 13px;
}
.f-auth-send-code[disabled] {
  opacity: .55; cursor: not-allowed;
}
.f-auth-submit {
  width: 100%; margin-top: 22px;
  padding: 12px 0; font-size: 15px;
}

/* —— Google 区块 —— */
.f-auth-google {
  margin-bottom: 16px;
}
.f-auth-google-fallback {
  display: flex; align-items: center; justify-content: center;
  gap: 10px; width: 100%;
  padding: 11px 16px;
  background: #fff; color: #3c4043;
  border: 1px solid #dadce0;
  border-radius: var(--f-radius);
  font-family: 'Roboto', 'Plus Jakarta Sans', sans-serif;
  font-size: 14px; font-weight: 600;
  cursor: pointer;
  transition: background .15s, box-shadow .15s;
}
.f-auth-google-fallback:hover {
  background: #f8f9fa;
  box-shadow: 0 1px 3px rgba(60,64,67,.15);
}
.f-auth-google-mount {
  display: flex; justify-content: center;
}
.f-auth-google-note {
  font-size: 11.5px; color: var(--f-text-muted);
  text-align: center; margin-top: 8px; font-weight: 500;
}
.f-auth-google-disabled {
  text-align: center; padding: 10px 14px;
  font-size: 12.5px; color: var(--f-text-muted); font-weight: 600;
  background: var(--f-bg-soft);
  border-radius: var(--f-radius);
  margin-bottom: 14px;
}

/* —— 分隔线 —— */
.f-auth-divider {
  display: flex; align-items: center;
  gap: 12px; margin: 4px 0 18px;
  color: var(--f-text-muted); font-size: 12px; font-weight: 700;
  text-transform: uppercase; letter-spacing: .1em;
}
.f-auth-divider::before, .f-auth-divider::after {
  content: ''; flex: 1; height: 1px; background: var(--f-divider);
}

/* —— 移动端 —— */
@media (max-width: 600px) {
  .f-auth-overlay { padding: 0; align-items: flex-end; }
  .f-auth-card {
    max-width: 100%;
    border-radius: var(--f-radius-lg) var(--f-radius-lg) 0 0;
    max-height: 92vh;
    animation: f-auth-card-in-mobile .35s cubic-bezier(.34, 1.4, .64, 1);
  }
  @keyframes f-auth-card-in-mobile {
    from { opacity: 0; transform: translateY(40px); }
    to   { opacity: 1; transform: translateY(0); }
  }
  .f-auth-brand { padding: 18px 20px 12px; }
  .f-auth-tabs { padding: 0 20px; }
  .f-auth-body { padding: 18px 20px 24px; }
}