/* auth.css — 登入 / 註冊 / consent modal / password field
 * Split from product-mvp/styles.css on 2026-05-15.
 */
@layer base {
.login-shell {
  min-height: 100vh;
  display: grid;
  align-items: center;
  padding: 2rem 1.5rem;
  background: var(--client-bg);
}

.login-layout {
  width: min(100%, 440px);
  margin: 0 auto;
}

.login-card {
  border: none;
  border-radius: 16px;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.login-card {
  display: grid;
  gap: 1rem;
  background: #ffffff;
  padding: 1.75rem;
  box-shadow: var(--shadow-strong);
}

.login-copy {
  display: grid;
  gap: 0.55rem;
}

.login-copy h2 {
  margin: 0;
  font-size: 1.7rem;
  letter-spacing: 0.03em;
  font-family: var(--serif);
  font-weight: 300;
  line-height: 1.35;
}

.login-copy small {
  color: var(--client-primary);
  font-weight: 500;
  font-size: 0.75rem;
  letter-spacing: 0.06em;
}

.login-form {
  display: grid;
  gap: 0.75rem;
}

.login-form {
  padding: 0.15rem 0;
}

.google-auth-entry {
  display: grid;
  gap: 0.65rem;
  min-width: 0;
}

.google-auth-entry[hidden],
.google-auth-button[hidden] {
  display: none;
}

.google-auth-button {
  min-height: 40px;
  overflow: hidden;
}

.google-auth-button > div,
.google-auth-button iframe {
  max-width: 100%;
}

.google-auth-status {
  margin: 0;
  color: var(--muted);
  font-size: 0.78rem;
  line-height: 1.55;
}

.google-auth-status:empty {
  display: none;
}

.google-auth-status[data-tone="danger"] {
  color: var(--danger);
}

.auth-method-divider {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 0.65rem;
  color: var(--muted);
  font-size: 0.75rem;
}

.auth-method-divider::before,
.auth-method-divider::after {
  content: "";
  height: 1px;
  background: var(--client-line, rgba(0, 0, 0, 0.12));
}

.consent-check {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--muted);
  line-height: 1.55;
  cursor: pointer;
}

.consent-check input[type="checkbox"] {
  margin-top: 0.2rem;
}

.consent-check > span,
.consent-copy {
  flex: 1 1 auto;
  min-width: 0;
}

.consent-copy {
  display: grid;
  gap: 0.15rem;
}

.consent-main {
  color: var(--muted);
}

.consent-note {
  display: block;
  color: var(--muted);
  font-size: 0.76rem;
  line-height: 1.45;
}

.consent-check a {
  color: var(--text);
  text-decoration: underline;
  text-underline-offset: 0.15em;
}

.signup-consent-modal-shell {
  z-index: 2400;
}

.signup-consent-modal-card {
  width: min(760px, calc(100vw - 2rem));
  height: min(90vh, 900px);
  max-height: min(90vh, 900px);
  overflow: hidden;
  padding: 1.1rem 1.1rem 1rem;
  gap: 0.7rem;
  display: flex;
  flex-direction: column;
}

.signup-consent-modal-head {
  align-items: flex-start;
}

.signup-consent-modal-eyebrow {
  color: var(--client-primary);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.signup-consent-modal-status {
  margin: 0;
  font-size: 0.84rem;
  color: rgba(26, 26, 26, 0.72);
}

.signup-consent-modal-status[hidden] {
  display: none;
}

.signup-consent-modal-scroll {
  min-height: 0;
  flex: 1 1 auto;
  overflow: auto;
  border: 1px solid rgba(26, 26, 26, 0.12);
  border-radius: 14px;
  padding: 1rem 1rem 1.35rem;
  background: linear-gradient(180deg, rgba(248, 251, 255, 0.9), rgba(255, 255, 255, 0.98));
}

.signup-consent-modal-scroll:focus {
  outline: 2px solid rgba(191, 63, 47, 0.28);
  outline-offset: 2px;
}

.signup-consent-modal-content {
  display: grid;
  gap: 0.85rem;
  color: var(--text);
  line-height: 1.72;
}

.signup-consent-modal-content h1,
.signup-consent-modal-content h2,
.signup-consent-modal-content h3 {
  margin: 0;
}

.signup-consent-modal-content p,
.signup-consent-modal-content ul,
.signup-consent-modal-content ol,
.signup-consent-modal-content li,
.signup-consent-modal-content blockquote,
.signup-consent-modal-content table,
.signup-consent-modal-content hr,
.signup-consent-modal-content footer,
.signup-consent-modal-content .meta,
.signup-consent-modal-content .placeholder-banner {
  margin: 0;
}

.signup-consent-modal-content ul,
.signup-consent-modal-content ol {
  padding-left: 1.25rem;
}

.signup-consent-modal-content :is(p, li, td, th, footer) {
  color: var(--text);
}

.signup-consent-modal-content .meta {
  font-size: 0.82rem;
  color: rgba(26, 26, 26, 0.65);
}

.signup-consent-modal-content .placeholder-banner {
  padding: 0.9rem 1rem;
  border-radius: 12px;
  background: rgba(69, 96, 107, 0.08);
  color: #231f1c;
}

.signup-consent-modal-content blockquote {
  padding: 0.85rem 1rem;
  border-left: 4px solid rgba(69, 96, 107, 0.42);
  background: rgba(69, 96, 107, 0.08);
  color: #231f1c;
}

.signup-consent-modal-content hr {
  border: 0;
  border-top: 1px solid rgba(26, 26, 26, 0.12);
}

.signup-consent-modal-content table {
  width: 100%;
  border-collapse: collapse;
  border-spacing: 0;
}

.signup-consent-modal-content th,
.signup-consent-modal-content td {
  padding: 0.72rem 0.78rem;
  border: 1px solid rgba(26, 26, 26, 0.12);
  text-align: left;
  vertical-align: top;
}

.signup-consent-modal-content th {
  background: rgba(26, 26, 26, 0.06);
}

.signup-consent-modal-progress {
  margin: 0;
}

.signup-consent-modal-foot {
  margin-top: 0.1rem;
  padding-top: 0.95rem;
  background: #ffffff;
}

.consent-check[data-invalid="true"] {
  color: var(--danger);
  border-radius: 8px;
  outline: 1px solid var(--danger);
  outline-offset: 4px;
}

.consent-check[data-invalid="true"] a {
  color: var(--danger);
}

.password-field-wrap {
  position: relative;
  display: flex;
}

.password-field-wrap input {
  flex: 1;
  padding-right: 4rem;
}

.password-toggle-btn {
  position: absolute;
  right: 0.5rem;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  cursor: pointer;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 700;
  padding: 0.25rem 0.4rem;
  border-radius: 6px;
  line-height: 1;
  min-height: 28px;
}

.password-toggle-btn:hover {
  color: var(--text);
  background: rgba(41, 53, 88, 0.06);
}

.login-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--touch-gap-min);
  justify-content: stretch;
}

.login-actions .btn {
  flex: 1 1 calc(33.33% - var(--touch-gap-min));
}

.login-status {
  margin: 0;
  border-radius: 12px;
  padding: 0.72rem 0.8rem;
  border: 1px solid transparent;
  background: transparent;
}

.login-status:empty {
  display: none;
}

.login-status[data-tone="neutral"] {
  border-color: transparent;
  background: #f3f3f3;
  color: var(--muted);
}

.login-status[data-tone="loading"] {
  border-color: transparent;
  background: #eeeeee;
  color: var(--muted);
}

.login-status[data-tone="success"] {
  border-color: #b8dfc2;
  background: #eef9f0;
  color: #1c5b2f;
}

.login-status[data-tone="danger"] {
  border-color: #efc1bd;
  background: #fff2f1;
  color: var(--danger);
}

.signup-continuity-note {
  margin: 14px 0 22px;
  padding: 12px 14px;
  border-left: 3px solid var(--copper-600, #9a4838);
  background: color-mix(in srgb, var(--copper-100, #f3dfd7) 54%, transparent);
  color: var(--ink-700, #414643);
  font-size: 0.88rem;
  line-height: 1.65;
}

.signup-continuity-note[hidden] {
  display: none;
}

.login-switch {
  margin: -0.2rem 0 0;
  color: var(--muted);
}

.login-switch-tight {
  margin-top: 0;
}

.link-btn {
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
  color: var(--muted);
  font-size: 0.8rem;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.link-btn:hover {
  color: var(--text);
}

.login-switch a {
  color: var(--client-primary);
  font-weight: 700;
}

.login-switch a:hover,
.login-switch a:focus-visible {
  color: var(--client-primary-hover);
}

/* === Stitch P2：Auth guide panel（step indicator + benefits + trust） ======= */

.auth-guide-panel {
  display: grid;
  gap: 1.4rem;
  align-content: center;
}

.auth-guide-steps {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.auth-guide-step {
  display: inline-flex;
  align-items: center;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--client-text-muted, #555D5A);
  padding: 0.3rem 0.65rem;
  border-radius: 999px;
  border: 1px solid var(--client-line, rgba(0,0,0,0.12));
  background: transparent;
  white-space: nowrap;
  transition: color 0.15s, background 0.15s, border-color 0.15s;
}

.auth-guide-step.is-active {
  color: var(--client-primary, #b95b3f);
  background: var(--client-primary-soft, rgba(185,91,63,0.09));
  border-color: rgba(191, 63, 47, 0.32);
  font-weight: 700;
}

.auth-guide-step.is-done {
  color: var(--client-trust, #2f5d62);
  background: var(--client-trust-soft, rgba(47,93,98,0.08));
  border-color: rgba(69, 96, 107, 0.24);
  text-decoration: line-through;
  text-decoration-color: rgba(69, 96, 107, 0.4);
  opacity: 0.72;
}

.auth-guide-step-sep {
  color: var(--client-text-muted, #555D5A);
  font-size: 0.75rem;
  font-weight: 400;
}

.auth-guide-copy {
  display: grid;
  gap: 0.5rem;
}

.auth-guide-copy h2 {
  margin: 0;
}

.auth-guide-copy p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--client-text-muted);
  line-height: 1.6;
}

.auth-guide-benefits {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.55rem;
}

.auth-guide-benefits li {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  font-size: 0.88rem;
  color: var(--client-text);
  line-height: 1.5;
}

.auth-guide-check {
  flex-shrink: 0;
  font-size: 0.82rem;
  font-weight: 800;
  color: var(--client-trust);
  margin-top: 0.05em;
}

.auth-guide-trust {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem;
  padding-top: 0.8rem;
  border-top: 1px solid var(--client-line, rgba(0,0,0,0.1));
}

.auth-guide-trust-item {
  font-size: 0.76rem;
  color: var(--client-text-muted);
  font-weight: 500;
}

.auth-guide-trust-dot {
  color: var(--client-line, rgba(0,0,0,0.2));
  font-size: 0.9rem;
}

/* Mobile：auth-side 不顯示 step + trust（卡片佈局單欄，guide 壓縮到只剩標題 copy） */
@media (max-width: 720px) {
  .auth-guide-steps,
  .auth-guide-benefits,
  .auth-guide-trust {
    display: none;
  }

  .auth-guide-panel {
    gap: 0.75rem;
  }
}

}