/* ============================================================
   Signup — Dark Continuum auth reskin + Terms acceptance UI.
   Loads LAST, after tokens.css, inline signup styles and
   account-layout.css. Scoped to the canonical signup page.
   ============================================================ */

body[data-layout-page='signup'],
body[data-layout-page='signup'] * {
  box-sizing: border-box;
}

body[data-layout-page='signup'] {
  position: relative;
  isolation: isolate;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: safe center;
  width: 100%;
  min-height: 100dvh;
  margin: 0;
  padding: 32px 20px;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  overflow-x: hidden;
  overflow-y: auto;
}

/* Gecko-poster backdrop matching signin.html, dimmed hard so the
   auth card keeps contrast. */
body[data-layout-page='signup']::before,
body[data-layout-page='signup']::after {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

body[data-layout-page='signup']::before {
  background: url('../media/gecko-poster.jpg') center / cover no-repeat;
  opacity: 0.34;
  filter: saturate(0.7);
}

body[data-layout-page='signup']::after {
  background: radial-gradient(120% 90% at 50% 45%,
    rgba(5, 6, 10, 0.62) 0%,
    rgba(5, 6, 10, 0.92) 62%,
    var(--bg) 100%);
}

body[data-layout-page='signup'] > img.logo,
body[data-layout-page='signup'] > .auth-container {
  position: relative;
  z-index: 1;
}

body[data-layout-page='signup'] img.logo {
  width: 128px;
  height: auto;
  margin: 0 0 24px;
}

body[data-layout-page='signup'] .auth-container {
  width: min(100%, 560px);
  max-width: 100%;
  margin: 0;
  padding: 32px 28px;
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--r-4);
  box-shadow: var(--shadow-overlay), var(--highlight);
  text-align: center;
}

body[data-layout-page='signup'] .auth-container h2 {
  margin: 0 0 6px;
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 24px;
  font-weight: var(--w-heading);
  line-height: 1.2;
  letter-spacing: -0.01em;
}

body[data-layout-page='signup'] .auth-subtext {
  margin: 0 0 24px;
  color: var(--text-2);
  font-size: 14px;
}

body[data-layout-page='signup'] #signup-form {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  column-gap: 16px;
}

body[data-layout-page='signup'] #signup-form > * {
  grid-column: 1 / -1;
}

body[data-layout-page='signup'] #signup-form > .form-group:nth-child(-n+2) {
  grid-column: auto;
}

body[data-layout-page='signup'] .auth-container :is(form, input, .auth-btn) {
  min-width: 0;
  max-width: 100%;
}

body[data-layout-page='signup'] .form-group {
  position: relative;
  margin-bottom: 16px;
  text-align: left;
}

body[data-layout-page='signup'] .form-group label {
  display: block;
  margin-bottom: 6px;
  color: var(--text-2);
  font-size: 12px;
  font-weight: var(--w-medium);
  letter-spacing: 0.02em;
}

body[data-layout-page='signup'] .form-group input {
  width: 100%;
  min-height: 44px;
  padding: 10px 12px;
  background: var(--surface-2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--r-2);
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.4;
  transition: border-color var(--t-fast) var(--ease),
              box-shadow var(--t-fast) var(--ease),
              background var(--t-fast) var(--ease);
}

body[data-layout-page='signup'] .form-group input::placeholder {
  color: var(--text-2);
}

body[data-layout-page='signup'] .form-group input:hover {
  border-color: var(--border-strong);
}

body[data-layout-page='signup'] .form-group input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: var(--ring);
  background: var(--surface-2);
}

body[data-layout-page='signup'] .form-group input.error {
  border-color: var(--warn);
  box-shadow: 0 0 0 1px rgb(var(--amber-rgb) / 0.28);
}

body[data-layout-page='signup'] .form-group input.valid {
  border-color: var(--accent);
}

body[data-layout-page='signup'] .error-message {
  display: none;
  margin-top: 6px;
  color: var(--warn);
  font-size: 12px;
  overflow-wrap: anywhere;
}

/* Password requirement rail — dark surfaces, accent "met" state. */
body[data-layout-page='signup'] .password-requirements {
  margin: 10px 0 0;
  padding: 12px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--r-2);
  font-size: 0.85rem;
}

body[data-layout-page='signup'] .requirement {
  display: flex;
  align-items: center;
  margin: 5px 0;
  color: var(--text-2);
}

body[data-layout-page='signup'] .requirement.met {
  color: var(--text);
}

body[data-layout-page='signup'] .requirement-icon {
  display: inline-block;
  width: 16px;
  height: 16px;
  margin-right: 10px;
  border: 1px solid var(--text-2);
  border-radius: 50%;
  color: transparent;
  text-align: center;
  line-height: 14px;
  font-size: 10px;
}

body[data-layout-page='signup'] .requirement.met .requirement-icon {
  background: var(--accent-cta);
  border-color: var(--accent-cta);
  color: var(--paper-1);
}

/* Submit + spinner */
body[data-layout-page='signup'] .auth-btn-wrapper {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

body[data-layout-page='signup'] .auth-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  min-height: 44px;
  padding: 10px 20px;
  background: var(--accent-cta);
  color: var(--paper-1);
  border: 1px solid transparent;
  border-radius: var(--r-2);
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: var(--w-medium);
  cursor: pointer;
  transition: background var(--t-fast) var(--ease),
              border-color var(--t-fast) var(--ease);
}

body[data-layout-page='signup'] .auth-btn:hover {
  background: var(--accent-cta-hover);
}

body[data-layout-page='signup'] .auth-btn:focus-visible {
  outline: none;
  box-shadow: var(--ring);
}

body[data-layout-page='signup'] .auth-btn:disabled {
  opacity: 0.6;
  pointer-events: none;
}

body[data-layout-page='signup'] .spinner {
  display: none;
  width: 20px;
  height: 20px;
  margin-left: 0;
  border: 3px solid var(--border-strong);
  border-radius: 50%;
  border-top-color: var(--accent-cta);
  animation: spin 1s ease-in-out infinite;
  vertical-align: middle;
}

body[data-layout-page='signup'] .switch-auth {
  margin-top: 16px;
  color: var(--text-2);
  font-size: 14px;
  text-align: center;
  overflow-wrap: anywhere;
}

body[data-layout-page='signup'] .switch-auth a {
  color: var(--accent-text);
  font-weight: var(--w-medium);
  text-decoration: none;
}

body[data-layout-page='signup'] .switch-auth a:hover {
  text-decoration: underline;
}

body[data-layout-page='signup'] .switch-auth a:focus-visible {
  outline: none;
  box-shadow: var(--ring);
  border-radius: var(--r-1);
}

/* Success modal */
body[data-layout-page='signup'] .modal {
  background: rgba(5, 6, 10, 0.72);
  overflow-y: auto;
}

body[data-layout-page='signup'] .modal-content {
  position: relative;
  top: auto;
  left: auto;
  transform: none;
  height: auto;
  width: min(90%, 500px);
  max-width: 500px;
  max-height: 84dvh;
  margin: 8dvh auto;
  padding: 32px 24px;
  overflow: auto;
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--r-4);
  box-shadow: var(--shadow-overlay);
  text-align: center;
}

body[data-layout-page='signup'] .success-icon {
  margin-bottom: 16px;
  color: var(--accent-text);
  font-size: 48px;
  line-height: 1;
}

body[data-layout-page='signup'] .modal-content h3 {
  margin: 0 0 8px;
  color: var(--text);
  font-size: 20px;
}

body[data-layout-page='signup'] .modal-content p {
  margin: 0 0 8px;
  color: var(--text-2);
  font-size: 14px;
}

body[data-layout-page='signup'] .btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  margin-top: 16px;
  padding: 10px 24px;
  background: var(--accent-cta);
  color: var(--paper-1);
  border: 1px solid transparent;
  border-radius: var(--r-2);
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: var(--w-medium);
  cursor: pointer;
}

body[data-layout-page='signup'] .btn-primary:hover {
  background: var(--accent-cta-hover);
}

body[data-layout-page='signup'] .btn-primary:focus,
body[data-layout-page='signup'] .btn-primary:focus-visible {
  outline: none;
  box-shadow: var(--ring);
}

/* Terms acceptance: preserve the 24x24 checkbox hit area. */
body[data-layout-page='signup'] .terms-acceptance {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: 24px 1fr;
  column-gap: 8px;
  align-items: start;
  margin: 0 0 16px;
  color: var(--text-2);
  font-size: 14px;
  line-height: 1.4;
  text-align: left;
}

body[data-layout-page='signup'] .terms-acceptance .terms-checkbox-hit {
  width: 24px;
  height: 24px;
  display: grid;
  place-items: center;
  cursor: pointer;
}

body[data-layout-page='signup'] .terms-acceptance input[type='checkbox'] {
  width: 18px;
  height: 18px;
  margin: 0;
  accent-color: var(--accent);
  cursor: pointer;
}

body[data-layout-page='signup'] .terms-acceptance input[type='checkbox'].error {
  accent-color: var(--warn);
}

body[data-layout-page='signup'] .terms-acceptance label {
  cursor: pointer;
}

body[data-layout-page='signup'] .terms-copy {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  column-gap: 4px;
}

body[data-layout-page='signup'] .terms-acceptance a {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  margin: -2px 0;
  color: var(--accent-text);
  line-height: 24px;
  text-decoration: underline;
  text-underline-offset: 2px;
}

body[data-layout-page='signup'] .terms-acceptance a:hover {
  text-decoration: underline;
}

body[data-layout-page='signup'] .terms-acceptance input[type='checkbox']:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

body[data-layout-page='signup'] .terms-acceptance a:focus-visible,
body[data-layout-page='signup'] .terms-dialog button:focus,
body[data-layout-page='signup'] .terms-dialog button:focus-visible {
  outline: none;
  box-shadow: var(--ring);
}

body[data-layout-page='signup'] .terms-error {
  grid-column: 2;
  margin-top: 4px;
  color: var(--warn);
  font-size: 12px;
}

body[data-layout-page='signup'] .terms-error[hidden] {
  display: none;
}

/* Terms of Service dialog */
body[data-layout-page='signup'] .terms-dialog {
  display: flex;
  flex-direction: column;
  width: min(520px, calc(100% - 28px));
  max-width: 520px;
  max-height: calc(100dvh - 28px);
  padding: 0;
  overflow: hidden;
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border-strong);
  border-radius: var(--r-4);
  box-shadow: var(--shadow-overlay);
}

body[data-layout-page='signup'] .terms-dialog:not([open]) {
  display: none;
}

body[data-layout-page='signup'] .terms-dialog::backdrop {
  background: rgba(0, 0, 0, 0.68);
}

body[data-layout-page='signup'] .terms-dialog-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 16px 16px 24px;
  border-bottom: 1px solid var(--border);
}

body[data-layout-page='signup'] .terms-dialog-header h2 {
  margin: 0;
  color: var(--text);
  font-size: 20px;
  line-height: 1.2;
  text-align: left;
}

body[data-layout-page='signup'] .terms-dialog-close {
  flex: none;
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  padding: 0;
  background: transparent;
  color: var(--text-2);
  border: 0;
  border-radius: var(--r-2);
  font-size: 24px;
  line-height: 1;
  cursor: pointer;
}

body[data-layout-page='signup'] .terms-dialog-close:hover {
  background: var(--surface-2);
  color: var(--text);
}

body[data-layout-page='signup'] .terms-dialog-body {
  min-height: 0;
  overflow-y: auto;
  flex: 1 1 auto;
  padding: 16px 24px 20px;
  color: var(--text-2);
  font-size: 14px;
  line-height: 1.5;
}

body[data-layout-page='signup'] .terms-dialog-body h3 {
  margin: 18px 0 6px;
  padding-top: 14px;
  color: var(--text);
  border-top: 1px solid var(--border);
  font-size: 16px;
}

body[data-layout-page='signup'] .terms-dialog-body ul {
  padding-left: 1.4rem;
}

body[data-layout-page='signup'] .terms-dialog-body li {
  margin-bottom: 0.5rem;
}

body[data-layout-page='signup'] .terms-dialog-body p {
  margin: 0 0 12px;
  color: var(--text-2);
}

body[data-layout-page='signup'] .terms-dialog-body strong {
  color: var(--text);
}

body[data-layout-page='signup'] .terms-dialog-footer {
  display: flex;
  justify-content: flex-end;
  padding: 16px 24px;
  border-top: 1px solid var(--border);
}

body[data-layout-page='signup'] .terms-dialog-done {
  min-height: 44px;
  padding: 0 24px;
  background: var(--accent-cta);
  color: var(--paper-1);
  border: 1px solid transparent;
  border-radius: var(--r-2);
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: var(--w-medium);
  cursor: pointer;
}

body[data-layout-page='signup'] .terms-dialog-done:hover {
  background: var(--accent-cta-hover);
}

/* Narrow mobile: single-column, no horizontal overflow, scrollable tall form. */
@media (max-width: 480px) {
  body[data-layout-page='signup'] {
    padding: 20px 16px;
  }

  body[data-layout-page='signup'] .auth-container {
    padding: 24px 20px;
  }

  body[data-layout-page='signup'] #signup-form {
    grid-template-columns: minmax(0, 1fr);
  }

  body[data-layout-page='signup'] #signup-form > * {
    grid-column: 1 / -1;
  }

  body[data-layout-page='signup'] .modal-content {
    margin: 5dvh auto;
    padding: 24px 20px;
  }

  body[data-layout-page='signup'] .terms-dialog-header,
  body[data-layout-page='signup'] .terms-dialog-footer {
    padding-left: 18px;
    padding-right: 18px;
  }

  body[data-layout-page='signup'] .terms-dialog-body {
    padding-left: 18px;
    padding-right: 18px;
  }
}

@media (prefers-reduced-motion: reduce) {
  body[data-layout-page='signup'] *,
  body[data-layout-page='signup'] *::before,
  body[data-layout-page='signup'] *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Keep the current signup card below the shared navigation, including wrapped links. */
.fg-nav-auth-page body[data-layout-page='signup'] {
  padding-top: calc(var(--fg-nav-offset) + 24px);
}
body[data-layout-page='signup'] > .fg-nav {
  position: fixed;
  left: 0;
  top: 0;
  width: 100%;
}
@media (max-width: 640px) {
  .fg-nav-auth-page body[data-layout-page='signup'] .auth-container {
    width: min(440px, calc(100vw - 48px));
  }
}