/* Auth / sign-in page — full-page layout with gradient + geometric bg + form */
.auth-page {
  min-height: 100vh;
  margin: 0;
  position: relative;
  background: linear-gradient(105deg, #67e8f9 0%, #22d3ee 18%, #06b6d4 35%, #8b5cf6 65%, #a855f7 80%, #d946ef 95%, #ec4899 100%);
  background-attachment: fixed;
  background-size: cover;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  padding: var(--space-5);
  overflow-x: hidden;
  overflow-y: auto;
}

/* Signup page needs more vertical space for multi-step forms */
.signup-page {
  justify-content: flex-start;
  padding-top: var(--space-6);
  padding-bottom: var(--space-6);
}

/* Hide content while checking auth to prevent flash */
.auth-page--loading .auth-page__wrap,
.auth-page--loading .auth-page__footer {
  opacity: 0;
  visibility: hidden;
}
.auth-page__wrap,
.auth-page__footer {
  transition: opacity 0.15s ease-out, visibility 0.15s ease-out;
}

/* Subtle geometric shapes overlaid on gradient */
.auth-page::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.08) 0%, transparent 50%),
              linear-gradient(300deg, rgba(168,85,247,0.12) 0%, transparent 45%);
  pointer-events: none;
}

.auth-page::after {
  content: "";
  position: absolute;
  width: 80vmax;
  height: 80vmax;
  top: -30vmax;
  right: -20vmax;
  background: linear-gradient(180deg, rgba(34,211,238,0.15) 0%, transparent 60%);
  clip-path: polygon(30% 0%, 100% 0%, 70% 100%, 0% 100%);
  pointer-events: none;
}

/* ECG — single centered line, dot at end, left-to-right like real monitor */
.auth-page__ecg {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

.auth-page__ecg-svg {
  position: absolute;
  left: 0;
  width: 100%;
  height: 18vh;
  top: 50%;
  transform: translateY(-50%);
  filter: blur(0.4px);
}

.auth-page__ecg-line {
  fill: none;
  stroke: rgba(255, 255, 255, 0.45);
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-dasharray: 400;
  stroke-dashoffset: 400;
  animation: auth-ecg-draw 2.6s ease-in-out infinite;
}

/* Dot: small perfect circle, not in SVG so it doesn’t stretch */
.auth-page__ecg-dot {
  position: absolute;
  left: 0;
  top: 50%;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.9);
  transform: translate(-50%, -50%);
  animation: auth-ecg-dot-move 2.6s ease-in-out infinite,
             auth-ecg-dot-pulse 0.5s ease-in-out infinite;
}

@keyframes auth-ecg-draw {
  0% { stroke-dashoffset: 400; }
  78% { stroke-dashoffset: 0; }
  85% { stroke-dashoffset: 0; }
  100% { stroke-dashoffset: 400; }
}

@keyframes auth-ecg-dot-move {
  0% { left: 0; transform: translate(-50%, -50%); }
  78% { left: 100%; transform: translate(-100%, -50%); }
  85% { left: 100%; transform: translate(-100%, -50%); }
  100% { left: 0; transform: translate(-50%, -50%); }
}

@keyframes auth-ecg-dot-pulse {
  0%, 100% { opacity: 0.75; }
  50% { opacity: 1; }
}

.auth-page__wrap {
  position: relative;
  z-index: 1;
  flex: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  align-content: center;
  max-width: 1000px;
  width: 100%;
  align-items: start;
}

@media (min-width: 780px) {
  .auth-page__wrap {
    grid-template-columns: 1fr 380px;
    align-items: stretch;
  }
}

/* Shared frosted glass panel — same height as sibling, wraps content */
.auth-page__glass {
  background: rgba(255, 255, 255, 0.48);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-radius: var(--radius-lg);
  box-shadow:
    0 4px 6px rgba(0, 0, 0, 0.07),
    0 10px 25px rgba(0, 0, 0, 0.1),
    0 20px 50px rgba(0, 0, 0, 0.08),
    0 0 0 1px rgba(255, 255, 255, 0.4);
}

/* Sign-in box: less transparent, same height as Luma box */
.auth-page__form-card.auth-page__glass {
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

/* Left: brand + benefits — same glass theme, dark text */
.auth-page__brand {
  padding: var(--space-5) var(--space-5) var(--space-5) 0;
  position: relative;
  z-index: 1;
}

@media (min-width: 780px) {
  .auth-page__brand {
    padding: var(--space-6);
  }
}

.auth-page__brand .auth-page__title,
.auth-page__brand .auth-page__benefits strong {
  color: #1e293b;
}

.auth-page__brand .auth-page__tagline,
.auth-page__brand .auth-page__intro,
.auth-page__brand .auth-page__footer-copy {
  color: #475569;
}

.auth-page__brand .auth-page__benefits li {
  color: #334155;
}

.auth-page__brand .auth-page__benefits li::before {
  color: #0891b2;
}

.auth-page__logo-link {
  display: inline-block;
  margin-bottom: var(--space-3);
}

.auth-page__logo {
  width: 48px;
  height: 48px;
  border-radius: var(--radius);
  display: block;
}

.auth-page__title {
  font-size: 1.75rem;
  font-weight: var(--fw-bold);
  letter-spacing: var(--tracking-tight);
  margin: 0 0 var(--space-2);
  color: var(--text);
  line-height: var(--lh-tight);
}

.auth-page__tagline {
  font-size: var(--fs-small);
  color: var(--text-muted);
  margin: 0 0 var(--space-4);
  font-weight: var(--fw-medium);
  letter-spacing: var(--tracking-wide);
}

.auth-page__intro {
  font-size: var(--fs-body);
  line-height: var(--lh-relaxed);
  color: var(--text-secondary);
  margin: 0 0 var(--space-5);
  max-width: 42ch;
}

.auth-page__benefits {
  list-style: none;
  padding: 0;
  margin: 0 0 var(--space-5);
}

.auth-page__benefits li {
  position: relative;
  padding-left: 1.5em;
  margin-bottom: var(--space-3);
  font-size: var(--fs-small);
  line-height: var(--lh-body);
  color: var(--text);
}

.auth-page__benefits li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--good);
  font-weight: var(--fw-bold);
}

.auth-page__benefits strong {
  color: var(--text);
}

.auth-page__footer-copy {
  font-size: var(--fs-caption);
  color: var(--text-muted);
  margin: 0;
}

/* Page footer: Nakshatra AI */
.auth-page__footer {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 900px;
  margin: 0 auto;
  padding: var(--space-3) var(--space-2);
  text-align: center;
  font-size: var(--fs-caption);
  color: rgba(255, 255, 255, 0.75);
}

.auth-page__footer-brand {
  font-weight: 600;
  display: block;
  margin-bottom: 0.15em;
}

.auth-page__footer-byline {
  font-size: 0.9em;
  opacity: 0.9;
}

/* Right: form card — natural height, glass */
.auth-page__form-card {
  padding: var(--space-6);
  width: 100%;
  max-width: 400px;
  margin: 0 auto;
}

.auth-page__form-title {
  font-size: var(--fs-h1);
  font-weight: var(--fw-bold);
  margin: 0 0 var(--space-1);
  color: var(--text);
}

.auth-page__form-sub {
  font-size: var(--fs-small);
  color: var(--text-muted);
  margin: 0 0 var(--space-5);
  line-height: var(--lh-body);
}

.auth-page__step {
  margin-top: 0;
}

.auth-page__field {
  margin-bottom: var(--space-4);
}

.auth-page__label {
  display: block;
  font-size: var(--fs-caption);
  font-weight: var(--fw-semibold);
  color: var(--text-secondary);
  margin-bottom: var(--space-1);
  letter-spacing: var(--tracking-wide);
}

.auth-page__input {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: var(--fs-body);
  font-family: var(--font-sans);
  background: var(--bg-elevated);
  color: var(--text);
  box-sizing: border-box;
}

.auth-page__input::placeholder {
  color: var(--text-muted);
}

.auth-page__input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-subtle);
}

.auth-page__field-hint {
  font-size: var(--fs-caption);
  color: var(--text-muted);
  margin-top: var(--space-1);
}

/* Unit toggle buttons */
.auth-page__unit-toggle {
  display: flex;
  gap: 4px;
  margin-bottom: var(--space-2);
}

.auth-page__unit-btn {
  padding: var(--space-1) var(--space-3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
  color: var(--text-muted);
  font-size: var(--fs-caption);
  font-weight: var(--fw-medium);
  cursor: pointer;
  transition: all 0.15s ease;
}

.auth-page__unit-btn:hover {
  border-color: var(--text-muted);
  color: var(--text);
}

.auth-page__unit-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

.auth-page__input-row {
  display: flex;
  align-items: center;
}

.auth-page__unit-label {
  font-size: var(--fs-small);
  color: var(--text-muted);
  margin: 0 var(--space-1);
}

.auth-page__error {
  font-size: var(--fs-small);
  color: var(--danger);
  margin-bottom: var(--space-3);
  padding: var(--space-2);
  background: var(--danger-subtle);
  border-radius: var(--radius);
}

.auth-page__actions {
  display: flex;
  gap: var(--space-3);
  justify-content: flex-end;
  margin-top: var(--space-5);
  flex-wrap: wrap;
}

.auth-page__btn-primary {
  background: linear-gradient(90deg, #22d3ee 0%, #8b5cf6 50%, #ec4899 100%);
  border: none;
  color: #fff;
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius);
  font-weight: var(--fw-semibold);
  cursor: pointer;
  font-family: var(--font-sans);
  box-shadow: 0 2px 8px rgba(0,0,0,0.12);
}

.auth-page__btn-primary:hover {
  filter: brightness(1.08);
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.auth-page__btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: transparent;
  color: var(--text-secondary);
  font-size: var(--fs-body);
  font-weight: var(--fw-medium);
  font-family: var(--font-sans);
  text-decoration: none;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.auth-page__btn-secondary:hover {
  background: var(--border-light);
  border-color: var(--text-muted);
  color: var(--text);
}

.auth-page__onboard-intro {
  font-size: var(--fs-small);
  color: var(--text-muted);
  margin: 0 0 var(--space-4);
  line-height: var(--lh-body);
}

.auth-page__labs {
  margin-top: var(--space-4);
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  background: var(--bg);
}

.auth-page__labs summary {
  cursor: pointer;
  font-weight: var(--fw-semibold);
  color: var(--text);
  font-size: var(--fs-small);
}

.auth-page__labs-desc {
  font-size: var(--fs-caption);
  color: var(--text-muted);
  margin: var(--space-2) 0 var(--space-3);
}

.auth-page__labs .auth-page__field {
  margin-bottom: var(--space-2);
}

.auth-page__labs .auth-page__field:last-child {
  margin-bottom: 0;
}

.auth-page__actions#authActionsOnboard {
  margin-top: var(--space-5);
}

.auth-page__oauth {
  margin: var(--space-4) 0;
}

.auth-page__divider {
  font-size: var(--fs-caption);
  color: var(--text-muted);
  text-align: center;
  margin-bottom: var(--space-3);
  position: relative;
}

.auth-page__divider::before,
.auth-page__divider::after {
  content: "";
  position: absolute;
  top: 50%;
  width: 40%;
  height: 1px;
  background: var(--border);
}

.auth-page__divider::before { left: 0; }
.auth-page__divider::after { right: 0; }

.auth-page__google-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  width: 100%;
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-elevated);
  color: var(--text);
  font-size: var(--fs-body);
  font-weight: var(--fw-semibold);
  text-decoration: none;
  cursor: pointer;
  transition: background .15s ease, border-color .15s ease;
}

.auth-page__google-btn:hover {
  background: var(--border-light);
  border-color: var(--text-muted);
}

.auth-page__google-icon {
  flex-shrink: 0;
}

.auth-page__error--oauth {
  margin-top: var(--space-2);
}

/* Signup page: step progress */
.signup-steps {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  margin-bottom: var(--space-2);
}
.signup-steps__dot {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: #fff;
  border: 1px solid #e2e8f0;
  color: #94a3b8;
  font-size: 12px;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s, color 0.2s, border-color 0.2s;
}
.signup-steps__dot[aria-current="true"] {
  background: var(--accent, #06b6d4);
  border-color: var(--accent, #06b6d4);
  color: #fff;
}
.signup-steps__dot.done {
  background: var(--accent, #06b6d4);
  border-color: var(--accent, #06b6d4);
  color: #fff;
}
.signup-steps__line {
  width: 24px;
  height: 2px;
  background: var(--border-light);
}
.signup-steps__label {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: var(--space-4);
  text-align: center;
}

.auth-page__signup-link {
  margin-top: var(--space-4);
  font-size: var(--fs-caption);
  color: var(--text-muted);
  text-align: center;
}
.auth-page__signup-link a {
  color: var(--primary);
  font-weight: var(--fw-medium);
  text-decoration: none;
}
.auth-page__signup-link a:hover {
  text-decoration: underline;
}

.auth-page__forgot-link {
  margin-top: var(--space-2);
  font-size: 12px;
  color: var(--text-muted);
  text-align: center;
}
.auth-page__forgot-link a {
  color: var(--text-secondary);
  text-decoration: none;
}
.auth-page__forgot-link a:hover {
  text-decoration: underline;
  color: var(--primary);
}

.auth-page__success {
  background: rgba(34, 197, 94, 0.1);
  color: #16a34a;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  font-size: var(--fs-small);
  margin-bottom: var(--space-3);
}

/* Smaller variant for secondary links like "Don't have an invite code?" */
.auth-page__signup-link--small {
  margin-top: var(--space-3);
  font-size: var(--fs-caption);
}

/* Terms and Conditions box */
.auth-page__terms-box {
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  background: var(--bg-surface);
  max-height: 280px;
  overflow: hidden;
}
.auth-page__terms-scroll {
  padding: var(--space-3);
  max-height: 280px;
  overflow-y: auto;
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-secondary);
}
.auth-page__terms-scroll h3 {
  color: var(--text-primary);
  font-size: 14px;
  margin-bottom: var(--space-2);
}
.auth-page__terms-scroll p {
  margin: var(--space-2) 0;
}
.auth-page__terms-scroll strong {
  color: var(--text-primary);
}

/* Terms acceptance checkbox - aligned left with terms box */
.auth-page__terms-accept {
  margin-top: var(--space-3);
  display: flex;
  align-items: flex-start;
  gap: 10px;
}
.auth-page__terms-accept input[type="checkbox"] {
  flex: 0 0 16px;
  width: 16px;
  height: 16px;
  min-width: 16px;
  max-width: 16px;
  margin: 2px 0 0 0;
  padding: 0;
  accent-color: var(--accent, #06b6d4);
  cursor: pointer;
}
.auth-page__terms-accept span {
  flex: 1;
  font-size: 13px;
  line-height: 1.5;
  color: var(--text-secondary);
}
.auth-page__terms-accept a {
  color: var(--primary);
}
.auth-page__terms-accept a:hover {
  text-decoration: underline;
}

/* Version tag in footer */
.auth-page__version {
  font-size: 10px;
  opacity: 0.5;
}

/* Unit toggle buttons (cm/ft, kg/lb) */
.auth-page__unit-toggle {
  display: flex;
  gap: 4px;
  margin-bottom: var(--space-2);
}
.auth-page__unit-btn {
  padding: 6px 12px;
  font-size: 13px;
  border: 1px solid rgba(0,0,0,0.15);
  border-radius: 6px;
  background: rgba(255,255,255,0.5);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.15s ease;
}
.auth-page__unit-btn:hover {
  background: rgba(255,255,255,0.8);
}
.auth-page__unit-btn.active {
  background: var(--primary, #06b6d4);
  color: white;
  border-color: var(--primary, #06b6d4);
}

/* Input row for ft/in or similar paired inputs */
.auth-page__input-row {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  max-width: 100%;
}
.auth-page__input-row .auth-page__input {
  flex: 0 0 auto;
  width: 70px;
  min-width: 60px;
}
.auth-page__unit-label {
  font-size: 13px;
  color: var(--text-secondary);
  white-space: nowrap;
}