/* ==========================================================================
   Signup / Login Page Styles
   Standalone styles for auth pages using v1.3 design tokens.
   No hardcoded colors, fonts, or spacing -- all values from tokens.css.
   Dark mode handled via data-theme attribute (set by inline head script)
   and the html[data-theme="dark"] block in tokens.css.
   ========================================================================== */

/* --- Screen reader only --- */

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* --- Layout --- */

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-subtle);
  font-family: var(--font-sans);
  color: var(--color-text);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.signup-container {
  width: 100%;
  padding: var(--space-4);
  box-sizing: border-box;
  position: relative;
}

/* --- Card --- */

.signup-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: var(--space-10) var(--space-8);
  width: 100%;
  max-width: 420px;
  margin: 0 auto;
  text-align: center;
  box-sizing: border-box;
}

/* --- Logo --- */

.signup-logo {
  margin-bottom: var(--space-6);
  color: var(--color-text);
}

.signup-logo-img {
  height: 36px;
  width: auto;
  display: block;
  margin: 0 auto;
}

/* --- Typography --- */

.signup-heading {
  font-family: var(--font-sans);
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text);
  margin: 0 0 var(--space-2) 0;
}

.signup-subtitle {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  margin: 0 0 var(--space-8) 0;
}

/* --- Messages --- */

.signup-message {
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  margin-bottom: var(--space-6);
  line-height: 1.5;
}

.signup-message.success {
  background: var(--color-success-bg);
  color: var(--color-success-text);
  border: 1px solid var(--color-success-border);
}

.signup-message.error {
  background: var(--color-error-bg);
  color: var(--color-error-text);
  border: 1px solid var(--color-error-border);
}

/* --- Form --- */

.signup-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.signup-form input[type="email"] {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-md);
  font-size: var(--text-base);
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  box-sizing: border-box;
}

.signup-form input[type="email"]::placeholder {
  color: var(--color-text-muted);
}

.signup-form input[type="email"]:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-subtle);
}

.signup-form button {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  background: var(--color-primary);
  color: var(--color-primary-text);
  border: none;
  border-radius: var(--radius-md);
  font-size: var(--text-base);
  font-family: var(--font-sans);
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition-fast);
}

.signup-form button:hover {
  background: var(--color-primary-hover);
}

.signup-form button:active {
  transform: translateY(1px);
}

/* --- Terms --- */

.signup-terms {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin: var(--space-4) 0 0 0;
  line-height: 1.6;
}

.signup-terms a {
  color: var(--color-text-muted);
  text-decoration: underline;
  transition: color var(--transition-fast);
}

.signup-terms a:hover {
  color: var(--color-text);
}

/* --- Theme toggle on auth pages --- */

.theme-toggle {
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  padding: var(--space-2);
  color: var(--color-text-muted);
  transition: all var(--transition-normal);
  display: flex;
  align-items: center;
  justify-content: center;
}

.theme-toggle:hover {
  color: var(--color-text);
  border-color: var(--color-border-strong);
}

.signup-container .theme-toggle {
  position: fixed;
  top: var(--space-4);
  right: var(--space-4);
  z-index: 10;
}

/* Theme icon show/hide (mirrors style.css for standalone pages) */

.theme-icon-sun { display: none; }
.theme-icon-moon { display: block; }
html[data-theme="dark"] .theme-icon-sun { display: block; }
html[data-theme="dark"] .theme-icon-moon { display: none; }

/* --- Auth page footer --- */

.auth-footer {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  padding: var(--space-4);
  text-align: center;
  color: var(--color-text-muted);
  font-size: var(--text-xs);
  box-sizing: border-box;
}

.auth-footer .footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-1);
}

.auth-footer .footer-content p {
  margin: 0;
}

.auth-footer .footer-tagline {
  font-style: italic;
}

.auth-footer .footer-links {
  display: flex;
  gap: var(--space-4);
}

.auth-footer .footer-links a {
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.auth-footer .footer-links a:hover {
  color: var(--color-text);
}

.auth-footer .footer-disclosure {
  color: var(--color-text-muted);
}