/* ============================================================
   VNFest 统一认证表单层
   适用: login.html 独立登录页 + index.html 账号弹窗
   风格参考: Galgame_events/galo_poster.html
   规则: 不改动各页面现有配色；组件形状/层级/动效统一。
   ============================================================ */

/* ── 组件令牌（默认 = 站点 --vn-* 语义值；页面可覆盖保持原配色） ── */
:root {
  --auth-radius-sm: 8px;
  --auth-radius-md: 12px;
  --auth-radius-lg: 16px;
  --auth-radius-full: 100px;

  --auth-primary: #e74c3c;
  --auth-primary-strong: #c0392b;
  --auth-danger: #c73545;
  --auth-success: #2d8f63;
  --auth-surface: #ffffff;
  --auth-surface-raised: #f0f0f0;
  --auth-surface-muted: #e8e8e8;
  --auth-text: #1a1a1a;
  --auth-text-muted: #666666;
  --auth-text-soft: #999999;
  --auth-border: rgba(0, 0, 0, 0.08);
  --auth-border-strong: rgba(0, 0, 0, 0.14);
  --auth-input-bg: rgba(69, 42, 32, 0.045);
  --auth-input-bg-focus: rgba(69, 42, 32, 0.07);
  --auth-shadow: rgba(0, 0, 0, 0.10);
  --auth-focus-ring: 0 0 0 3px rgba(231, 76, 60, 0.16);
  --auth-shadow-primary: 0 12px 28px rgba(231, 76, 60, 0.22);
  --auth-shadow-soft: 0 8px 24px rgba(0, 0, 0, 0.10);

  --auth-ease-spring: cubic-bezier(0.22, 1, 0.36, 1);
  --auth-ease-out: cubic-bezier(0.2, 0, 0, 1);
  --transition-theme: background 0.4s ease, color 0.4s ease, border-color 0.4s ease, box-shadow 0.4s ease;
}

:root[data-theme='dark'] {
  --auth-primary: #ff6b5c;
  --auth-primary-strong: #e74c3c;
  --auth-danger: #f05a68;
  --auth-success: #57c089;
  --auth-surface: #1a1a1c;
  --auth-surface-raised: #232325;
  --auth-surface-muted: #2c2c2e;
  --auth-text: #f0f0f0;
  --auth-text-muted: #9a9a9a;
  --auth-text-soft: #6b7280;
  --auth-border: rgba(255, 255, 255, 0.08);
  --auth-border-strong: rgba(255, 255, 255, 0.14);
  --auth-input-bg: rgba(255, 255, 255, 0.055);
  --auth-input-bg-focus: rgba(255, 255, 255, 0.09);
  --auth-shadow: rgba(0, 0, 0, 0.50);
  --auth-focus-ring: 0 0 0 3px rgba(255, 107, 92, 0.18);
  --auth-shadow-primary: 0 12px 28px rgba(231, 76, 60, 0.26);
  --auth-shadow-soft: 0 8px 24px rgba(0, 0, 0, 0.32);
}

/* ── 表单视图（登录/注册/找回 面板切换） ── */
.auth-view {
  animation: auth-view-in 0.38s var(--auth-ease-out) both;
}
.auth-view.inactive {
  display: none;
}
@keyframes auth-view-in {
  from { opacity: 0; transform: translateY(12px); }
}

/* ── 标题 ── */
.auth-title h2 {
  font-size: 24px;
  line-height: 1.2;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--auth-text);
  text-wrap: pretty;
  transition: var(--transition-theme);
}
.auth-title p {
  margin-top: 8px;
  color: var(--auth-text-muted);
  font-size: 13px;
  line-height: 1.7;
  text-wrap: pretty;
  transition: var(--transition-theme);
}

/* ── 字段 ── */
.auth-field {
  margin-bottom: 14px;
}
.auth-field > label {
  display: block;
  font-size: 12px;
  font-weight: 700;
  color: var(--auth-text-muted);
  margin-bottom: 7px;
  letter-spacing: 0.01em;
  transition: var(--transition-theme);
}
.auth-stack {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 16px;
}
.auth-stack .auth-field {
  margin-bottom: 0;
}
.auth-input-row {
  display: flex;
  gap: 8px;
}
.auth-input-row .auth-input {
  flex: 1;
  min-width: 0;
}
.auth-code-btn {
  flex: 0 0 auto;
  white-space: nowrap;
  font-size: 12px;
  min-height: 46px;
  padding-inline: 16px;
}

/* ── 输入框 ── */
.auth-input {
  width: 100%;
  min-height: 46px;
  padding: 11px 14px;
  background: var(--auth-input-bg);
  border: 1px solid var(--auth-border-strong);
  border-radius: var(--auth-radius-md);
  color: var(--auth-text);
  font: inherit;
  font-size: 14px;
  outline: none;
  transition: var(--transition-theme), box-shadow 0.25s ease;
}
.auth-input:hover {
  background: color-mix(in srgb, var(--auth-input-bg) 82%, var(--auth-surface));
}
.auth-input:focus {
  border-color: var(--auth-primary);
  background: var(--auth-input-bg-focus);
  box-shadow: var(--auth-focus-ring);
}
.auth-input::placeholder {
  color: var(--auth-text-soft);
}

/* ── 按钮（胶囊，参考 galo_poster） ── */
.auth-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: 44px;
  padding: 10px 22px;
  border: 1px solid var(--auth-border-strong);
  border-radius: var(--auth-radius-full);
  background: var(--auth-surface-raised);
  color: var(--auth-text);
  font: inherit;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  user-select: none;
  text-decoration: none;
  transition: var(--transition-theme), transform 0.2s var(--auth-ease-out);
}
.auth-btn:hover {
  transform: translateY(-1px);
  border-color: var(--auth-text-soft);
  box-shadow: var(--auth-shadow-soft);
}
.auth-btn:active {
  transform: translateY(0) scale(0.97);
}
.auth-btn:focus-visible {
  outline: 2px solid var(--auth-primary);
  outline-offset: 3px;
}
.auth-btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  pointer-events: none;
}

.auth-btn-primary {
  width: 100%;
  margin-top: 2px;
  background: var(--auth-primary);
  border-color: var(--auth-primary);
  color: #fff;
  font-size: 15px;
  letter-spacing: 2px;
  box-shadow: var(--auth-shadow-primary);
}
.auth-btn-primary:hover {
  background: var(--auth-primary-strong);
  border-color: var(--auth-primary-strong);
  box-shadow: 0 14px 32px color-mix(in srgb, var(--auth-primary) 30%, transparent);
}

.auth-btn-qq {
  border-color: rgba(18, 183, 245, 0.45);
  color: #12b7f5;
  background: color-mix(in srgb, #12b7f5 8%, var(--auth-surface-raised));
}
.auth-btn-qq:hover {
  background: rgba(18, 183, 245, 0.12);
  border-color: #12b7f5;
  box-shadow: 0 8px 20px rgba(18, 183, 245, 0.18);
}
.auth-btn-discord {
  border-color: rgba(88, 101, 242, 0.45);
  color: #7f8aff;
  background: color-mix(in srgb, #5865f2 8%, var(--auth-surface-raised));
}
.auth-btn-discord:hover {
  background: rgba(88, 101, 242, 0.12);
  border-color: #5865f2;
  box-shadow: 0 8px 20px rgba(88, 101, 242, 0.18);
}

/* ── 消息 ── */
.auth-msg {
  margin-top: 12px;
  padding: 10px 12px;
  border-radius: var(--auth-radius-sm);
  font-size: 13px;
  font-weight: 600;
  text-align: center;
  transition: opacity 0.3s ease, transform 0.3s ease;
}
.auth-msg.error {
  background: color-mix(in srgb, var(--auth-danger) 12%, transparent);
  color: var(--auth-danger);
  border: 1px solid color-mix(in srgb, var(--auth-danger) 24%, transparent);
}
.auth-msg.success {
  background: color-mix(in srgb, var(--auth-success) 14%, transparent);
  color: var(--auth-success);
  border: 1px solid color-mix(in srgb, var(--auth-success) 30%, transparent);
}

/* ── 分隔线与社交登录 ── */
.auth-divider {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 20px 0 14px;
  color: var(--auth-text-soft);
  font-size: 12px;
}
.auth-divider::before,
.auth-divider::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--auth-border);
}
.auth-social-row {
  display: flex;
  gap: 10px;
}
.auth-social-row .auth-btn {
  flex: 1;
  font-size: 13px;
}

/* ── 底部切换 / 辅助链接 ── */
.auth-switch {
  text-align: center;
  margin-top: 18px;
  font-size: 13px;
  color: var(--auth-text-muted);
}
.auth-switch a {
  color: var(--auth-primary);
  font-weight: 600;
  cursor: pointer;
}
.auth-switch a:hover {
  text-decoration: underline;
}
.auth-link-row {
  display: flex;
  justify-content: flex-end;
  margin: -4px 0 12px;
  font-size: 12px;
}
.auth-link-row a {
  color: var(--auth-text-muted);
  cursor: pointer;
  font-weight: 700;
}
.auth-link-row a:hover {
  color: var(--auth-primary);
}

/* ============================================================
   index.html 账号弹窗：与登录页同构
   ============================================================ */
#accountModal {
  --auth-primary: var(--vn-primary);
  --auth-primary-strong: var(--vn-primary-strong);
  --auth-danger: var(--vn-danger);
  --auth-success: var(--vn-success);
  --auth-surface: var(--vn-surface);
  --auth-surface-raised: var(--vn-surface-raised);
  --auth-surface-muted: var(--vn-surface-muted);
  --auth-text: var(--vn-text);
  --auth-text-muted: var(--vn-text-muted);
  --auth-text-soft: var(--vn-text-soft);
  --auth-border: var(--vn-border);
  --auth-border-strong: var(--vn-border-strong);
  --auth-bg: var(--vn-bg);
  --auth-shadow: var(--vn-shadow);
  --auth-input-bg: rgba(127, 127, 127, 0.06);
  --auth-input-bg-focus: rgba(127, 127, 127, 0.10);
  --auth-focus-ring: 0 0 0 3px color-mix(in srgb, var(--vn-primary) 16%, transparent);
  --auth-shadow-primary: 0 12px 28px color-mix(in srgb, var(--vn-primary) 22%, transparent);
  --auth-shadow-soft: 0 8px 24px var(--vn-shadow);
}

#accountModal .calendar-modal-card {
  padding: 24px;
  background:
    linear-gradient(180deg, color-mix(in srgb, var(--vn-primary-container) 42%, var(--vn-surface)), var(--vn-surface));
}
#accountModal .calendar-modal-scroll {
  border-radius: 16px;
}
#accountModal .auth-title {
  margin-top: 8px;
}
#accountModal .auth-title h2 {
  font-size: 22px;
}

/* 弹窗打开时内容错峰入场 */
#accountModal.open .auth-view > * {
  animation: auth-fade-up 0.5s ease both;
}
#accountModal.open .auth-view > *:nth-child(1) { animation-delay: 0.03s; }
#accountModal.open .auth-view > *:nth-child(2) { animation-delay: 0.07s; }
#accountModal.open .auth-view > *:nth-child(3) { animation-delay: 0.11s; }
#accountModal.open .auth-view > *:nth-child(4) { animation-delay: 0.15s; }
#accountModal.open .auth-view > *:nth-child(5) { animation-delay: 0.19s; }
#accountModal.open .auth-view > *:nth-child(6) { animation-delay: 0.23s; }
#accountModal.open .auth-view > *:nth-child(7) { animation-delay: 0.27s; }
#accountModal.open .auth-view > *:nth-child(8) { animation-delay: 0.31s; }
#accountModal.open .auth-view > *:nth-child(9) { animation-delay: 0.35s; }

@keyframes auth-fade-up {
  from { opacity: 0; transform: translateY(10px); }
}

/* ── 动效降级 ── */
@media (prefers-reduced-motion: reduce) {
  .auth-view,
  #accountModal.open .auth-view > * {
    animation: none !important;
    transition-duration: 0.01ms !important;
  }
}