/* 會員登入／註冊頁 — 共用樣式（login.html、register.html）
   原本是 React 元件(animated-sign-in/up.tsx)搭配 Tailwind 編譯，
   現在改為 Jinja 直接輸出的靜態 HTML + 純 CSS + 一般 <script>。 */

.auth-layout,
.auth-main {
  margin: 0;
  padding: 0;
  min-height: 100vh;
  min-height: 100dvh;
}

.auth-main {
  display: flex;
  flex-direction: column;
}

.login-container {
  --background: #fdfcfa;
  --foreground: #2b2320;
  --primary: #52c4c8;
  --primary-foreground: #2b2320;
  --accent: #eef9f9;
  --accent-foreground: #2b2320;
  --border: #d8f2f2;
  --ring: #8eedf0;
  --login-paper: #fdfcfa;
  --login-ink: #2b2320;
  --login-ink-soft: #5a524e;
  --login-ink-faint: #8a817b;
  --login-mint: #8eedf0;
  --login-mint-deep: #52c4c8;
  --login-mint-border: #d8f2f2;
  --login-card: #ffffff;
  --login-shadow: 0 18px 50px rgba(43, 35, 32, 0.08);
  font-family: "Noto Sans TC", "Microsoft JhengHei", sans-serif;
  letter-spacing: 0.05em;
  color: var(--login-ink);
  position: relative;
  flex: 1;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  align-items: safe center;
  justify-content: center;
  padding: 48px 20px 64px;
  background: linear-gradient(160deg, var(--login-paper) 0%, #f7f4f1 55%, #eef9f9 100%);
  overflow-x: hidden;
  overflow-y: auto;
}

.login-container *,
.login-container *::before,
.login-container *::after {
  box-sizing: border-box;
}

.login-container.dark {
  --background: #1e1917;
  --foreground: #f7f4f1;
  --primary: #52c4c8;
  --primary-foreground: #1e1917;
  --accent: #2b2320;
  --accent-foreground: #f7f4f1;
  --border: #3d3532;
  --ring: #8eedf0;
  --login-paper: #1e1917;
  --login-ink: #f7f4f1;
  --login-ink-soft: #d4cdc8;
  --login-ink-faint: #b5ada8;
  --login-mint: #8eedf0;
  --login-mint-deep: #52c4c8;
  --login-mint-border: #3d3532;
  --login-card: #2b2320;
  --login-shadow: 0 18px 50px rgba(0, 0, 0, 0.35);
  background: linear-gradient(160deg, #1e1917 0%, #2b2320 55%, #1a2e2e 100%);
}

.login-container .particles-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
}

.login-container .back-home {
  position: absolute;
  top: 20px;
  left: 20px;
  z-index: 3;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  font-size: 13px;
  font-family: inherit;
  border: 1px solid var(--login-mint-border);
  border-radius: 8px;
  background: var(--login-card);
  color: var(--login-ink-soft);
  text-decoration: none;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s, color 0.2s;
}

.login-container .back-home svg {
  width: 16px;
  height: 16px;
}

.login-container .back-home:hover {
  background: var(--login-mint);
  border-color: var(--login-mint-deep);
  color: var(--login-ink);
}

.login-container .theme-toggle {
  position: absolute;
  top: 20px;
  right: 20px;
  z-index: 3;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: 1px solid var(--login-mint-border);
  border-radius: 50%;
  background: var(--login-card);
  color: var(--login-mint-deep);
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s, transform 0.2s;
}

.login-container .theme-toggle:hover {
  background: var(--login-mint);
  border-color: var(--login-mint-deep);
  transform: scale(1.05);
}

.login-container .theme-toggle svg {
  width: 18px;
  height: 18px;
}

.login-container .theme-toggle svg[hidden] {
  display: none;
}

.login-container .login-card {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: 420px;
  /* visible so reCAPTCHA checkbox / challenge iframe is not clipped */
  overflow: visible;
  background: var(--login-card);
  border: 1px solid var(--login-mint-border);
  border-radius: 16px;
  box-shadow: var(--login-shadow);
  backdrop-filter: blur(8px);
  animation: login-card-in 0.6s ease-out;
}

.login-container .login-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(94, 207, 207, 0.06) 0%, rgba(43, 35, 32, 0.03) 100%);
  pointer-events: none;
}

@keyframes login-card-in {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.login-container .login-card-inner {
  position: relative;
  z-index: 1;
  padding: 40px 36px 32px;
}

.login-container .login-card:has([data-auth-login-root]) {
  max-width: 480px;
  background: transparent;
  border: 0;
  box-shadow: none;
  backdrop-filter: none;
}

.login-container .login-card:has([data-auth-login-root])::before {
  display: none;
}

.login-container .login-card:has([data-auth-login-root]) .login-card-inner {
  padding: 0;
}

.login-container .login-header {
  text-align: center;
  margin-bottom: 32px;
}

.login-container .login-header h1 {
  font-size: 24px;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--login-ink);
  margin: 0 0 10px;
}

.login-container .login-header p {
  font-size: 13px;
  line-height: 1.8;
  color: var(--login-ink-faint);
  margin: 0;
}

.login-container .login-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
  transition: transform 0.3s ease;
}

.login-container .login-form.form-success {
  animation: login-success-pulse 0.5s ease;
}

@keyframes login-success-pulse {
  0%,
  100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.01);
  }
}

.login-container .form-field {
  position: relative;
}

.login-container .form-field input {
  width: 100%;
  padding: 16px 14px 8px;
  font-size: 15px;
  font-family: inherit;
  color: var(--login-ink);
  background: var(--login-paper);
  border: 1.5px solid var(--login-mint-border);
  border-radius: 10px;
  outline: none;
  transition: border-color 0.25s, box-shadow 0.25s, background 0.25s;
}

.login-container .form-field input:focus {
  border-color: var(--login-mint-deep);
  box-shadow: 0 0 0 3px rgba(94, 207, 207, 0.2);
  background: #fff;
}

.login-container.dark .form-field input:focus {
  background: #3d3532;
}

.login-container .form-field label {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 14px;
  color: var(--login-ink-faint);
  pointer-events: none;
  transition: top 0.2s, font-size 0.2s, color 0.2s;
}

/* Floating label: CSS-only "has content" detection via the placeholder-shown
   trick — these inputs carry placeholder=" " (a single space) specifically
   so :placeholder-shown correctly reflects empty vs filled, no JS needed. */
.login-container .form-field input:focus + label,
.login-container .form-field input:not(:placeholder-shown) + label {
  top: 10px;
  font-size: 11px;
  color: var(--login-mint-deep);
  transform: none;
}

.login-container .form-field.invalid input {
  border-color: #e07070;
}

.login-container .form-field.invalid label {
  color: #c44;
}

.login-container .form-field .error-message {
  display: block;
  margin-top: 6px;
  font-size: 12px;
  color: #c44;
}

.login-container .form-field .error-message[hidden] {
  display: none;
}

.login-container .form-field .toggle-password {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 4px;
  border: none;
  background: none;
  color: var(--login-ink-faint);
  cursor: pointer;
  transition: color 0.2s;
}

.login-container .form-field .toggle-password:hover {
  color: var(--login-mint-deep);
}

.login-container .form-field .toggle-password svg {
  width: 18px;
  height: 18px;
}

.login-container .form-field .toggle-password svg[hidden] {
  display: none;
}

.login-container .form-options {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-size: 13px;
}

.login-container .remember-me,
.login-container .partner-check {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  color: var(--login-ink-soft);
  user-select: none;
}

.login-container .remember-me input,
.login-container .partner-check input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.login-container .remember-me .checkmark,
.login-container .partner-check .checkmark {
  position: relative;
  box-sizing: border-box;
  width: 22px;
  height: 22px;
  border: 1.5px solid var(--login-mint-border);
  border-radius: 6px;
  background: var(--login-paper);
  transition: background 0.3s, border-color 0.3s;
  flex-shrink: 0;
}

.login-container .remember-me .checkmark::before,
.login-container .partner-check .checkmark::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 42%;
  width: 5px;
  height: 9px;
  border-bottom: 2px solid #fff;
  border-right: 2px solid #fff;
  transform: translate(-50%, -50%) rotate(45deg) scale(0);
  opacity: 0;
  transition: transform 0.15s ease-in, opacity 0.1s ease-in;
}

.login-container .remember-me:hover .checkmark,
.login-container .partner-check:hover .checkmark {
  border-color: var(--login-mint-deep);
}

.login-container .remember-me input:checked + .checkmark,
.login-container .partner-check input:checked + .checkmark {
  background: var(--login-mint-deep);
  border-color: var(--login-mint-deep);
}

.login-container .remember-me input:checked + .checkmark::before,
.login-container .partner-check input:checked + .checkmark::before {
  transform: translate(-50%, -50%) rotate(45deg) scale(1.3);
  opacity: 1;
  transition-delay: 0.05s;
}

.login-container .forgot-password {
  border: none;
  background: none;
  padding: 0;
  font-family: inherit;
  font-size: 12.5px;
  color: var(--login-mint-deep);
  text-decoration: underline;
  text-underline-offset: 2px;
  cursor: pointer;
}

.login-container .forgot-password:hover {
  color: #3ba8a8;
}

.login-container .login-button {
  width: 100%;
  padding: 13px 20px;
  font-size: 15px;
  font-family: inherit;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--login-ink);
  background: linear-gradient(135deg, var(--login-mint) 0%, var(--login-mint-deep) 100%);
  border: none;
  border-radius: 10px;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s, opacity 0.2s;
  box-shadow: 0 4px 16px rgba(94, 207, 207, 0.35);
}

.login-container .login-button:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(94, 207, 207, 0.45);
}

.login-container .login-button:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.login-container .form-msg {
  margin: 0;
  font-size: 13px;
  text-align: center;
  line-height: 1.6;
  color: var(--login-ink-faint);
}

.login-container .form-msg:empty {
  display: none;
}

.login-container .form-msg.is-err,
.login-container .form-msg.is-error {
  color: #c44;
}

.login-container .form-msg.is-ok {
  color: #2a8a6a;
}

.login-container .auth-divider {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 20px 0 16px;
  font-size: 12px;
  color: var(--login-ink-faint);
}

.login-container .auth-divider::before,
.login-container .auth-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: currentColor;
  opacity: 0.25;
}

.login-container .google-signin-btn {
  display: flex;
  justify-content: center;
  margin-bottom: 6px;
}

.login-container .signup-prompt {
  margin: 24px 0 0;
  text-align: center;
  font-size: 13px;
  color: var(--login-ink-soft);
}

.login-container .signup-prompt a {
  margin-left: 4px;
  color: var(--login-mint-deep);
  font-weight: 600;
  text-decoration: none;
}

.login-container .signup-prompt a:hover {
  text-decoration: underline;
  text-underline-offset: 2px;
}

.login-container .terms-check {
  align-items: flex-start;
  margin-top: 4px;
  line-height: 1.5;
}

.login-container .terms-check .checkmark {
  margin-top: 1px;
}

.login-container .terms-check-label {
  font-size: 13px;
  color: var(--login-ink-soft);
}

.login-container .terms-check-label a {
  color: var(--login-mint-deep);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.login-container .terms-check-hint {
  margin: -4px 0 8px 30px;
  font-size: 11px;
  color: var(--login-ink-faint);
  line-height: 1.4;
}

.login-container .terms-check.invalid {
  color: #c44;
}

.login-container .terms-check.invalid .terms-check-label,
.login-container .terms-check.invalid .terms-check-label a {
  color: #c44;
}

.login-container .terms-check .error-message {
  display: block;
  margin: 4px 0 0 30px;
  font-size: 12px;
  color: #c44;
}

.login-container .terms-check .error-message[hidden] {
  display: none;
}

.register-terms-dialog:not([open]) {
  display: none;
}

.register-terms-dialog[open] {
  display: flex;
  flex-direction: column;
  width: min(520px, calc(100vw - 32px));
  max-height: min(80vh, 640px);
  padding: 0;
  border: 1px solid #e5ddd4;
  border-radius: 14px;
  background: #fff;
  color: var(--login-ink, #2b2320);
  box-shadow: 0 24px 60px rgba(43, 35, 32, 0.22);
}

.register-terms-dialog::backdrop {
  background: rgba(30, 24, 20, 0.45);
}

.register-terms-header {
  padding: 20px 22px 12px;
  border-bottom: 1px solid #efe9e3;
}

.register-terms-header h2 {
  margin: 0;
  font-size: 18px;
  letter-spacing: 0.04em;
}

.register-terms-desc {
  margin: 8px 0 0;
  font-size: 13px;
  color: var(--login-ink-soft, #6b6058);
  line-height: 1.5;
}

.register-terms-scroll {
  flex: 1 1 auto;
  overflow: auto;
  padding: 16px 22px;
  overscroll-behavior: contain;
}

.register-terms-sections {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.register-terms-section p {
  margin: 0 0 6px;
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--login-ink-soft, #6b6058);
}

.register-terms-section p strong {
  color: var(--login-ink, #2b2320);
}

.register-terms-footer {
  padding: 12px 22px 18px;
  border-top: 1px solid #efe9e3;
  background: #faf8f5;
}

.register-terms-scroll-hint {
  margin: 0 0 10px;
  font-size: 12px;
  color: #a07a3a;
}

.register-terms-scroll-hint[hidden] {
  display: none;
}

.register-terms-actions {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
}

.register-terms-btn {
  min-width: 96px;
  padding: 10px 16px;
  border-radius: 8px;
  font-family: inherit;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid transparent;
}

.register-terms-btn--outline {
  background: #fff;
  border-color: #ddd5cc;
  color: var(--login-ink, #2b2320);
}

.register-terms-btn--primary {
  background: linear-gradient(135deg, var(--login-mint, #9cefe0) 0%, var(--login-mint-deep, #5ecfcf) 100%);
  color: var(--login-ink, #2b2320);
}

.register-terms-btn--primary:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

/* TOTP / account security */
.totp-security-panel {
  max-width: 520px;
  margin: 0 auto;
  padding: 24px 0 48px;
}

.totp-banner {
  padding: 12px 16px;
  border-radius: 10px;
  margin-bottom: 20px;
  font-size: 0.95rem;
}

.totp-banner--warn {
  background: #fff4e5;
  border: 1px solid #f0c987;
  color: #5a3e00;
}

.totp-security-head h1 {
  margin: 0 0 8px;
  font-size: 1.5rem;
}

.totp-security-head p {
  margin: 0 0 24px;
  color: var(--login-ink-soft, #5a524e);
}

.totp-steps {
  margin: 0 0 20px 1.2rem;
  line-height: 1.7;
}

.totp-setup-panel,
.totp-backup-panel {
  margin-top: 20px;
}

.totp-qr {
  display: block;
  margin: 0 auto 16px;
  border-radius: 8px;
  background: #fff;
  padding: 8px;
}

.totp-secret {
  display: block;
  word-break: break-all;
  padding: 10px 12px;
  background: var(--accent, #eef9f9);
  border-radius: 8px;
  margin-bottom: 16px;
  font-size: 0.9rem;
}

.totp-form .form-field {
  margin-bottom: 16px;
}

.totp-backup-list {
  list-style: none;
  padding: 0;
  margin: 16px 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.totp-backup-list code {
  display: block;
  padding: 8px 10px;
  background: var(--accent, #eef9f9);
  border-radius: 6px;
  text-align: center;
}

.totp-back-link {
  margin-top: 32px;
}

.account-member-card__totp-warn {
  color: #9a4d00;
  font-size: 0.9rem;
}

/* Forgot-password wizard + OTP digit inputs */
.login-container .fp-wizard {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.login-container .fp-steps {
  display: flex;
  justify-content: center;
  gap: 8px;
  list-style: none;
  margin: 0 0 8px;
  padding: 0;
}

.login-container .fp-step-indicator {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  color: var(--login-ink-faint);
  letter-spacing: 0.04em;
}

.login-container .fp-step-indicator span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  border: 1.5px solid var(--login-mint-border);
  font-size: 11px;
  font-weight: 600;
  transition: background 0.2s, border-color 0.2s, color 0.2s;
}

.login-container .fp-step-indicator.is-active {
  color: var(--login-ink);
  font-weight: 600;
}

.login-container .fp-step-indicator.is-active span,
.login-container .fp-step-indicator.is-done span {
  background: var(--login-mint-deep);
  border-color: var(--login-mint-deep);
  color: #fff;
}

.login-container .fp-step-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.login-container .fp-step-actions .login-button {
  flex: 1;
}

.login-container .btn-link {
  border: none;
  background: none;
  padding: 0;
  font-family: inherit;
  font-size: 13px;
  color: var(--login-mint-deep);
  text-decoration: underline;
  text-underline-offset: 2px;
  cursor: pointer;
}

.login-container .btn-link:hover {
  color: #3ba8a8;
}

.login-container .otp-field {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.login-container .otp-label {
  margin: 0;
  font-size: 13px;
  color: var(--login-ink-soft);
  text-align: center;
}

.login-container .otp-input-group {
  display: flex;
  justify-content: center;
  gap: 8px;
}

.login-container .otp-input-group.is-complete .otp-digit {
  border-color: var(--login-mint-deep);
  background: rgba(142, 237, 240, 0.12);
}

.login-container .otp-digit {
  width: 42px;
  height: 48px;
  padding: 0;
  text-align: center;
  font-size: 20px;
  font-family: inherit;
  font-weight: 600;
  letter-spacing: 0;
  color: var(--login-ink);
  background: var(--login-paper);
  border: 1.5px solid var(--login-mint-border);
  border-radius: 10px;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s, background 0.2s;
}

.login-container .otp-digit:focus,
.login-container .otp-digit.is-active {
  border-color: var(--login-mint-deep);
  box-shadow: 0 0 0 3px rgba(94, 207, 207, 0.2);
  background: #fff;
}

.login-container.dark .otp-digit:focus,
.login-container.dark .otp-digit.is-active {
  background: #3d3532;
}

.login-container .otp-digit.is-filled {
  border-color: var(--login-mint-deep);
}

.login-container .fp-backup-field {
  margin-top: 4px;
}

.login-container .recaptcha-field {
  margin: 0;
  min-height: 0;
  overflow: visible;
}

/* Google allows hiding the badge when a visible disclosure + policy links are shown. */
.grecaptcha-badge {
  visibility: hidden !important;
  opacity: 0 !important;
  pointer-events: none !important;
}

.login-container .recaptcha-disclosure {
  position: absolute;
  left: 20px;
  bottom: 16px;
  z-index: 3;
  margin: 0;
  max-width: min(280px, calc(100% - 40px));
  font-size: 11px;
  line-height: 1.45;
  letter-spacing: 0.02em;
  text-align: left;
  color: var(--login-ink-faint);
}

.login-container .recaptcha-disclosure a {
  color: inherit;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.login-container .recaptcha-disclosure a:hover {
  color: var(--login-ink-soft);
}

@media (max-width: 420px) {
  .login-container .fp-step-indicator {
    font-size: 0;
    gap: 4px;
  }

  .login-container .fp-step-indicator span {
    font-size: 11px;
  }

  .login-container .otp-digit {
    width: 38px;
    height: 44px;
    font-size: 18px;
  }

  .login-container .otp-input-group {
    gap: 6px;
  }
}