/* Shared Auth UI (glass + dark mode) - Modern Warm Biscuit Theme */
:root {
  --primary: #b87344;
  --primary-accent: #c88b54;
  --danger: #c8735f;
  --success: #7a8f55;
  --warning: #d9a574;
  --surface-glass: rgba(255, 254, 251, 0.78);
  --surface-border: rgba(232, 231, 227, 0.5);
  --grad: linear-gradient(135deg, #b87344 0%, #d9a574 100%);
  --radius: 18px;
  --radius-sm: 10px;
  --text: #2c2926;
  --text-dim: #7c7869;
  --font: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --transition: 0.35s cubic-bezier(0.65, 0.05, 0.36, 1);
}
body.dark {
  --surface-glass: rgba(44, 41, 38, 0.78);
  --surface-border: rgba(255, 255, 255, 0.08);
  --grad: linear-gradient(135deg, #b87344 0%, #d9a574 100%);
  --text: #fafaf8;
  --text-dim: #a8a599;
}
html,
body {
  height: 100%;
}
body {
  margin: 0;
  padding: 1.25rem;
  background: #ffffff;
  font-family: var(--font);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow-y: auto;
  line-height: 1.55;
  min-height: 100dvh;
  box-sizing: border-box;
}
/* Auth page specific layout variant allowing card body scroll without clipping */
body.auth-page {
  align-items: flex-start;
  justify-content: center;
}
body.auth-page .auth-wrapper {
  margin-top: 2.5rem;
  margin-bottom: 2.5rem;
}
@media (max-width: 640px) {
  body.auth-page .auth-wrapper {
    margin-top: 1.25rem;
    margin-bottom: 1.25rem;
  }
}
@media (min-height: 900px) {
  body.auth-page .auth-wrapper {
    margin-top: 4rem;
    margin-bottom: 3rem;
  }
}
.auth-wrapper {
  width: 100%;
  max-width: 520px;
  position: relative;
}
.auth-card {
  background: var(--surface-glass);
  backdrop-filter: blur(18px) saturate(150%);
  -webkit-backdrop-filter: blur(18px) saturate(150%);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius);
  box-shadow: 0 18px 40px -10px rgba(31, 41, 55, 0.35);
  animation: fadeSlide 0.65s ease;
  overflow: hidden;
  position: relative;
}
@keyframes fadeSlide {
  from {
    opacity: 0;
    transform: translateY(30px) scale(0.97);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}
.auth-header {
  padding: 2rem 2rem 1.25rem;
  text-align: center;
  position: relative;
}
.auth-header h1,
.auth-header h3 {
  margin: 0;
  font-weight: 700;
  letter-spacing: -0.5px;
  color: var(--text);
}
.auth-sub {
  margin: 0.5rem 0 0;
  font-size: 0.8rem;
  letter-spacing: 0.6px;
  text-transform: uppercase;
  color: var(--text-dim);
  font-weight: 600;
}
.auth-body {
  padding: 1.25rem 2rem 2.25rem;
}
/* Scroll containment: only make inner section scroll if content exceeds viewport */
@media (min-width: 768px) {
  body.auth-page .auth-card {
    max-height: calc(100vh - 5rem);
    display: flex;
    flex-direction: column;
  }
  body.auth-page .auth-card .auth-body {
    flex: 1 1 auto;
    overflow-y: auto;
    overscroll-behavior: contain;
  }
  body.auth-page .auth-card .auth-body::-webkit-scrollbar {
    width: 10px;
  }
  body.auth-page .auth-card .auth-body::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.05);
    border-radius: 20px;
  }
  body.dark.auth-page .auth-card .auth-body::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.05);
  }
  body.auth-page .auth-card .auth-body::-webkit-scrollbar-thumb {
    background: #b87344;
    border-radius: 20px;
  }
  body.auth-page .auth-card .auth-body::-webkit-scrollbar-thumb:hover {
    background: #9a5d3a;
  }
}
.mode-toggle {
  position: absolute;
  top: 14px;
  right: 14px;
  background: rgba(255, 255, 255, 0.55);
  border: 1px solid var(--surface-border);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-radius: 40px;
  padding: 0.5rem 0.9rem;
  font-size: 0.7rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  gap: 0.5rem;
  align-items: center;
  color: var(--text);
  transition: background 0.3s, color 0.3s;
}
body.dark .mode-toggle {
  background: rgba(255, 255, 255, 0.08);
}
.mode-toggle:hover {
  background: rgba(255, 255, 255, 0.75);
}
body.dark .mode-toggle:hover {
  background: rgba(255, 255, 255, 0.14);
}
.logo-badge {
  width: 70px;
  height: 70px;
  border-radius: 20px;
  background: linear-gradient(135deg, #b87344 0%, #d9a574 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1rem;
  font-size: 2rem;
  color: #fff;
  box-shadow: 0 8px 20px -8px rgba(184, 115, 68, 0.65);
  position: relative;
}
.logo-badge:after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(135deg, #b87344 0%, #d9a574 100%);
}
.form-label {
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 1.1px;
  font-weight: 600;
  color: var(--text-dim);
  display: block;
  margin: 0 0 0.4rem;
}
.form-control {
  width: 100%;
  padding: 0.85rem 1rem;
  border: 2px solid rgba(148, 163, 184, 0.35);
  background: rgba(255, 255, 255, 0.68);
  border-radius: 12px;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text);
  transition: border-color 0.25s, box-shadow 0.25s, background 0.4s;
}
body.dark .form-control {
  background: rgba(255, 255, 255, 0.06);
  border-color: #334155;
}
.form-control:focus {
  outline: none;
  border-color: var(--primary-accent);
  box-shadow: 0 0 0 4px rgba(184, 115, 68, 0.2);
}
.hint {
  font-size: 0.65rem;
  color: var(--text-dim);
  margin: 0.35rem 0 0;
  display: flex;
  align-items: center;
  gap: 0.35rem;
  line-height: 1.3;
}
.hint i {
  font-size: 0.6rem;
  color: var(--primary-accent);
}
.hint.invalid i {
  color: var(--danger);
}
.hint.valid i {
  color: var(--success);
}
.validation-checklist {
  margin: 0.5rem 0 0.75rem;
  padding: 0.6rem 0.75rem;
  border: 1px dashed rgba(148, 163, 184, 0.45);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.45);
  font-size: 0.65rem;
  display: grid;
  gap: 0.35rem;
}
body.dark .validation-checklist {
  background: rgba(255, 255, 255, 0.05);
  border-color: #475569;
}
.validation-checklist .rule {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  color: var(--text-dim);
  font-weight: 500;
}
.validation-checklist .rule i {
  font-size: 0.65rem;
  opacity: 0.9;
}
.validation-checklist .rule.pass {
  color: var(--success);
}
.validation-checklist .rule.fail {
  color: var(--danger);
}
.btn-auth {
  background: linear-gradient(135deg, #b87344 0%, #d9a574 100%);
  border: none;
  color: #fff;
  width: 100%;
  padding: 0.95rem 1rem;
  border-radius: 14px;
  font-weight: 600;
  font-size: 0.9rem;
  letter-spacing: 0.4px;
  position: relative;
  overflow: hidden;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.55rem;
  transition: transform 0.35s, box-shadow 0.4s;
}
.btn-auth:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 25px -10px rgba(184, 115, 68, 0.6);
}
.btn-auth:active {
  transform: translateY(0);
}
.btn-auth:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}
.alert {
  border-radius: 12px;
  padding: 0.85rem 1rem;
  font-size: 0.75rem;
  font-weight: 500;
  display: flex;
  gap: 0.6rem;
  align-items: center;
  margin-bottom: 1rem;
  border: 1px solid transparent;
}
.alert-danger {
  background: #fef2f2;
  color: #991b1b;
  border-color: #fecaca;
}
.alert-success {
  background: #e6f4ed;
  color: #034e28;
  border-color: #99d4b7;
}
.link-area {
  text-align: center;
  margin-top: 1.25rem;
  font-size: 0.7rem;
  color: var(--text-dim);
}
.link-area a {
  color: var(--primary-accent);
  text-decoration: none;
  font-weight: 600;
}
.link-area a:hover {
  text-decoration: underline;
}
.section-divider {
  margin: 1.25rem 0 0.75rem;
  text-align: center;
  position: relative;
}
.section-divider:before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  height: 1px;
  background: #e8e8e8;
}
.section-divider span {
  position: relative;
  z-index: 2;
  background: var(--surface-glass);
  padding: 0 0.6rem;
  font-size: 0.6rem;
  letter-spacing: 1px;
  font-weight: 700;
  color: var(--text-dim);
  border: 1px solid var(--surface-border);
  border-radius: 30px;
}
body.dark .section-divider span {
  background: rgba(31, 41, 55, 0.9);
}
.loading-overlay {
  position: absolute;
  inset: 0;
  background: rgba(255, 255, 255, 0.68);
  backdrop-filter: blur(6px);
  display: none;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 1rem;
  z-index: 25;
}
body.dark .loading-overlay {
  background: rgba(17, 24, 39, 0.55);
}
.loading-overlay.active {
  display: flex;
}
.spinner-lg {
  width: 2.4rem;
  height: 2.4rem;
  border: 3px solid rgba(0, 0, 0, 0.15);
  border-top-color: var(--primary-accent);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}
@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}
@media (prefers-reduced-motion: reduce) {
  .auth-card,
  .btn-auth,
  .form-control,
  .logo-badge,
  .validation-checklist .rule {
    transition: none !important;
    animation: none !important;
  }
}
@media (max-width: 560px) {
  html,
  body {
    height: auto;
    min-height: 100dvh;
  }
  body {
    padding: calc(env(safe-area-inset-top, 0) + 0.9rem) 0.85rem 1.3rem;
    align-items: flex-start;
  }
  .auth-wrapper {
    margin: 0 auto;
  }
  .auth-card {
    margin: 0 auto;
    max-height: calc(100dvh - 2rem - env(safe-area-inset-top, 0));
    overflow-y: auto;
  }
  .auth-header {
    padding: 1.45rem 1.25rem 0.65rem;
  }
  .auth-body {
    padding: 1rem 1.25rem 1.3rem;
  }
  .logo-badge {
    width: 60px;
    height: 60px;
    font-size: 1.5rem;
    margin-bottom: 0.75rem;
  }
}
@media (max-height: 700px) {
  body {
    align-items: flex-start;
    padding-top: calc(env(safe-area-inset-top, 0) + 1rem);
  }
  .auth-card {
    margin-top: 0.5rem;
    max-height: calc(100dvh - 1rem - env(safe-area-inset-top, 0));
    overflow-y: auto;
  }
}
@media (max-height: 600px) {
  .auth-header {
    padding: 1.15rem 1.1rem 0.55rem;
  }
  .logo-badge {
    width: 54px;
    height: 54px;
    font-size: 1.3rem;
  }
  .auth-body {
    padding: 0.9rem 1.05rem 1.15rem;
  }
}

/* Simple dark focus ring */
:is(input, select, button):focus-visible {
  outline: 2px solid var(--primary-accent);
  outline-offset: 2px;
}

/* Plan glider selector */
.plan-glider-wrapper {
  margin: 1rem 0 1.1rem;
}
.plan-glider-group {
  position: relative;
  display: flex;
  gap: 0.5rem;
  padding: 6px;
  background: rgba(255, 255, 255, 0.55);
  border: 1px solid var(--surface-border);
  border-radius: 16px;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  overflow: hidden;
}
body.dark .plan-glider-group {
  background: rgba(255, 255, 255, 0.07);
}
.plan-glider-group button {
  flex: 1;
  padding: 0.7rem 0.55rem;
  font-size: 0.62rem;
  letter-spacing: 0.7px;
  text-transform: uppercase;
  font-weight: 600;
  border: none;
  background: transparent;
  cursor: pointer;
  position: relative;
  z-index: 2;
  color: var(--text-dim);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
  transition: color 0.35s;
}
.plan-glider-group button .price {
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  color: var(--text);
}
body.dark .plan-glider-group button .price {
  color: var(--text);
}
.plan-glider-group button .interval {
  font-size: 0.55rem;
  font-weight: 600;
  opacity: 0.8;
}
.plan-glider-group button:focus-visible {
  outline: 2px solid var(--primary-accent);
  outline-offset: 2px;
  border-radius: 10px;
}
.plan-glider {
  position: absolute;
  top: 6px;
  left: 6px;
  height: calc(100% - 12px);
  width: 120px;
  border-radius: 12px;
  background: linear-gradient(135deg, #b87344 0%, #d9a574 100%);
  box-shadow: 0 6px 18px -6px rgba(184, 115, 68, 0.55);
  transition: transform 0.55s cubic-bezier(0.65, 0.05, 0.36, 1), width 0.45s,
    background 0.5s;
  z-index: 1;
}
body.dark .plan-glider {
  background: linear-gradient(135deg, #b87344 0%, #d9a574 100%);
}
.plan-glider-group button.active {
  color: #fff;
}
.plan-glider-group button.active .interval {
  opacity: 0.95;
}
.plan-meta {
  margin: 0.35rem 0 0.9rem;
  font-size: 0.7rem;
  line-height: 1.45;
  color: var(--text-dim);
  font-weight: 500;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
}
.plan-badge {
  background: rgba(255, 255, 255, 0.75);
  padding: 0.35rem 0.6rem;
  border-radius: 30px;
  font-size: 0.55rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  color: var(--text-dim);
  border: 1px solid var(--surface-border);
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  backdrop-filter: blur(6px);
}
body.dark .plan-badge {
  background: rgba(255, 255, 255, 0.1);
  color: #9ca3af;
}
.plan-select-fallback {
  display: none !important;
} /* keep select for no-js if needed */
@media (max-width: 560px) {
  .plan-glider-group {
    flex-wrap: nowrap;
  }
  .plan-glider-group button {
    padding: 0.65rem 0.35rem;
    font-size: 0.55rem;
  }
}

/* Extra small viewport refinements for plan selector */
@media (max-width: 420px) {
  .plan-glider-wrapper {
    margin: 0.75rem 0 0.9rem;
  }
  .plan-glider-group {
    gap: 0.4rem;
    padding: 6px 6px;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
  }
  .plan-glider-group button {
    flex: 0 0 auto;
    min-width: 118px;
    scroll-snap-align: center;
    padding: 0.55rem 0.55rem;
  }
  .plan-glider-group button .price {
    font-size: clamp(0.78rem, 0.9rem + 0.2vw, 1rem);
    line-height: 1.05;
    font-weight: 700;
  }
  .plan-glider-group button .interval {
    font-size: 0.5rem;
    letter-spacing: 0.6px;
  }
  .plan-glider {
    transition: transform 0.45s cubic-bezier(0.65, 0.05, 0.36, 1), width 0.35s;
  }
}
@media (max-width: 360px) {
  .plan-glider-group button {
    min-width: 105px;
    padding: 0.5rem 0.45rem;
  }
  .plan-glider-group button .price {
    font-size: 0.82rem;
  }
}

/* Desktop enhancements */
@media (min-width: 992px) {
  .auth-wrapper {
    max-width: 760px;
  }
  .auth-card.wide {
    max-width: 780px;
  }
  .plan-glider-group {
    gap: 0.9rem;
    padding: 8px;
  }
  .plan-glider-group button {
    padding: 1rem 0.9rem;
  }
  .plan-glider-group button .price {
    font-size: 1.12rem;
  }
  .plan-glider {
    box-shadow: 0 12px 34px -10px rgba(184, 115, 68, 0.55);
  }
  body.auth-page .auth-card .auth-body {
    scrollbar-gutter: stable both-edges;
  }
}