:root {
  color-scheme: light;
  --accent: #c8102e;
  --accent-hover: #a70c25;
  --accent-text: #b70f32;
  --accent-soft: rgba(215, 25, 63, 0.12);
  --page-start: #f8fafc;
  --page-end: #e9eef5;
  --page-glow: rgba(215, 25, 63, 0.15);
  --text: #172033;
  --muted: #6c7689;
  --subtle: #4f5a70;
  --card: rgba(255, 255, 255, 0.9);
  --card-border: rgba(143, 157, 179, 0.28);
  --card-highlight: rgba(255, 255, 255, 0.92);
  --divider: #d8dee8;
  --input: rgba(255, 255, 255, 0.76);
  --input-border: #cbd4e1;
  --input-hover: #aeb9c9;
  --toggle: rgba(255, 255, 255, 0.76);
  --toggle-hover: rgba(255, 255, 255, 0.98);
  --shadow: rgba(24, 39, 69, 0.14);
  --shadow-deep: rgba(24, 39, 69, 0.1);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background: var(--page-end);
}

html[data-theme="dark"] {
  color-scheme: dark;
  --accent: #c8102e;
  --accent-hover: #a70c25;
  --accent-text: #ff647b;
  --accent-soft: rgba(239, 41, 74, 0.14);
  --page-start: #121214;
  --page-end: #080809;
  --page-glow: rgba(239, 41, 74, 0.17);
  --text: #f6f7f9;
  --muted: #989ca7;
  --subtle: #c3c5cb;
  --card: rgba(22, 22, 24, 0.9);
  --card-border: rgba(255, 255, 255, 0.12);
  --card-highlight: rgba(255, 255, 255, 0.09);
  --divider: #3a3a3e;
  --input: rgba(11, 11, 12, 0.62);
  --input-border: #55565c;
  --input-hover: #71727a;
  --toggle: rgba(22, 22, 24, 0.76);
  --toggle-hover: rgba(34, 34, 37, 0.98);
  --shadow: rgba(0, 0, 0, 0.48);
  --shadow-deep: rgba(0, 0, 0, 0.32);
}

* { box-sizing: border-box; }

html { min-width: 320px; background: var(--page-end); }

body {
  margin: 0;
  min-width: 320px;
  min-height: 100dvh;
}

button,
input { font: inherit; }

.auth-theme-toggle {
  position: fixed;
  z-index: 3;
  top: 22px;
  right: 22px;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  height: 38px;
  padding: 0 13px;
  border: 1px solid var(--card-border);
  border-radius: 999px;
  color: var(--subtle);
  background: var(--toggle);
  box-shadow: 0 8px 26px var(--shadow-deep);
  backdrop-filter: blur(18px);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.01em;
  cursor: pointer;
  transition: color 160ms ease, background 160ms ease, border-color 160ms ease, transform 160ms ease;
}

.auth-theme-toggle:hover {
  color: var(--text);
  background: var(--toggle-hover);
  border-color: var(--input-hover);
  transform: translateY(-1px);
}

.auth-theme-toggle:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--accent) 34%, transparent);
  outline-offset: 3px;
}

.theme-toggle-mark {
  display: grid;
  width: 13px;
  height: 13px;
  place-items: center;
}

.theme-toggle-mark svg {
  grid-area: 1 / 1;
  width: 16px;
  height: 16px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
}

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

.auth-shell {
  position: relative;
  isolation: isolate;
  min-height: 100dvh;
  display: grid;
  place-items: center;
  overflow: hidden;
  padding:
    max(68px, env(safe-area-inset-top))
    max(22px, env(safe-area-inset-right))
    max(42px, env(safe-area-inset-bottom))
    max(22px, env(safe-area-inset-left));
  background:
    radial-gradient(circle at 12% 7%, var(--page-glow), transparent 30rem),
    radial-gradient(circle at 88% 92%, color-mix(in srgb, var(--page-glow) 58%, transparent), transparent 28rem),
    linear-gradient(145deg, var(--page-start), var(--page-end));
}

.auth-shell::before {
  content: "";
  position: absolute;
  z-index: -1;
  inset: 0;
  opacity: 0.32;
  background-image:
    linear-gradient(color-mix(in srgb, var(--text) 4%, transparent) 1px, transparent 1px),
    linear-gradient(90deg, color-mix(in srgb, var(--text) 4%, transparent) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: linear-gradient(to bottom, black, transparent 72%);
}

.auth-shell::after {
  content: "";
  position: absolute;
  z-index: -1;
  top: 13%;
  left: 50%;
  width: min(72vw, 720px);
  aspect-ratio: 1;
  border: 1px solid color-mix(in srgb, var(--accent) 12%, transparent);
  border-radius: 50%;
  transform: translateX(-50%);
  box-shadow:
    0 0 0 90px color-mix(in srgb, var(--accent) 2.8%, transparent),
    0 0 0 180px color-mix(in srgb, var(--accent) 1.8%, transparent);
}

.auth-card {
  position: relative;
  width: min(100%, 464px);
  padding: 42px;
  overflow: hidden;
  border: 1px solid var(--card-border);
  border-radius: 16px;
  background: var(--card);
  box-shadow:
    0 34px 90px var(--shadow),
    0 8px 28px var(--shadow-deep),
    inset 0 1px 0 var(--card-highlight);
  backdrop-filter: blur(22px);
  animation: auth-card-enter 520ms cubic-bezier(0.22, 1, 0.36, 1) both;
}

.auth-card::before {
  content: "";
  position: absolute;
  inset: 0 auto auto 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent 8%, color-mix(in srgb, var(--accent) 55%, transparent), transparent 92%);
}

.auth-brand {
  display: flex;
  align-items: center;
  gap: 16px;
  color: var(--text);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 21px;
  font-weight: 400;
  letter-spacing: -0.025em;
}

.auth-brand img {
  width: 146px;
  max-height: 38px;
  object-fit: contain;
  object-position: left center;
}

.auth-brand .logo-dark { display: none; }
html[data-theme="dark"] .auth-brand .logo-light { display: none; }
html[data-theme="dark"] .auth-brand .logo-dark { display: block; }

.auth-brand span {
  padding-left: 16px;
  border-left: 1px solid var(--divider);
}

.auth-heading { margin: 40px 0 30px; }

.eyebrow {
  margin: 0 0 10px;
  color: var(--accent-text);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  color: var(--text);
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(31px, 6vw, 38px);
  font-weight: 400;
  line-height: 1.06;
  letter-spacing: -0.04em;
}

.auth-heading > p:last-child {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.55;
}

form { display: grid; gap: 20px; }

label:not(.remember-row) {
  display: grid;
  gap: 8px;
  color: var(--subtle);
  font-size: 13px;
  font-weight: 720;
}

input[type="email"], input[type="password"], .password-field input {
  width: 100%;
  height: 52px;
  border: 1px solid var(--input-border);
  border-radius: 8px;
  padding: 0 14px;
  color: var(--text);
  background: var(--input);
  outline: none;
}

.field-control,
.password-field {
  position: relative;
  display: block;
  height: 52px;
  border: 1px solid var(--input-border);
  border-radius: 8px;
  background: var(--input);
  box-shadow: inset 0 1px 0 color-mix(in srgb, var(--card-highlight) 52%, transparent);
  transition: border-color 160ms ease, box-shadow 160ms ease, background 160ms ease;
}

.field-control:hover,
.password-field:hover { border-color: var(--input-hover); }

.field-control:focus-within,
.password-field:focus-within {
  border-color: var(--input-hover);
  background: color-mix(in srgb, var(--input) 94%, var(--accent) 6%);
  box-shadow:
    0 0 0 4px color-mix(in srgb, var(--accent) 13%, transparent),
    inset 0 1px 0 color-mix(in srgb, var(--card-highlight) 52%, transparent);
}

.field-control:has(input[aria-invalid="true"]),
.password-field:has(input[aria-invalid="true"]) {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 10%, transparent);
}

.field-control input,
.password-field input {
  height: 100%;
  border: 0;
  border-radius: inherit;
  background: transparent;
  box-shadow: none;
}

.field-control input:-webkit-autofill,
.password-field input:-webkit-autofill {
  -webkit-text-fill-color: var(--text);
  caret-color: var(--text);
  box-shadow: inset 0 0 0 1000px color-mix(in srgb, var(--input) 94%, var(--page-start)) !important;
}

.field-control .field-icon + input { padding-left: 46px; }
.password-field input { padding-right: 50px; }

.field-icon {
  position: absolute;
  z-index: 1;
  top: 50%;
  left: 15px;
  width: 19px;
  height: 19px;
  transform: translateY(-50%);
  fill: none;
  stroke: var(--muted);
  stroke-width: 1.65;
  stroke-linecap: round;
  stroke-linejoin: round;
  pointer-events: none;
  transition: stroke 160ms ease;
}

.field-control:focus-within .field-icon { stroke: var(--accent); }

.password-visibility {
  position: absolute;
  z-index: 1;
  top: 50%;
  right: 7px;
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  padding: 0;
  border: 0;
  border-radius: 9px;
  color: var(--muted);
  background: transparent;
  transform: translateY(-50%);
  cursor: pointer;
  transition: color 160ms ease, background 160ms ease;
}

.password-visibility:hover { color: var(--text); background: var(--toggle-hover); }

.password-visibility:focus-visible {
  color: var(--accent);
  outline: 2px solid color-mix(in srgb, var(--accent) 58%, transparent);
  outline-offset: 1px;
}

.password-visibility svg,
.button-arrow {
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.password-visibility svg {
  width: 19px;
  height: 19px;
  stroke-width: 1.7;
}

.password-icon-hide { display: none; }
.password-visibility[aria-pressed="true"] .password-icon-show { display: none; }
.password-visibility[aria-pressed="true"] .password-icon-hide { display: block; }

.remember-row {
  display: flex;
  gap: 11px;
  align-items: center;
  width: fit-content;
  color: var(--subtle);
  font-size: 13px;
  line-height: 1.4;
  cursor: pointer;
  user-select: none;
}

.remember-row input {
  appearance: none;
  width: 18px;
  height: 18px;
  flex: 0 0 18px;
  margin: 0;
  border: 1px solid var(--input-hover);
  border-radius: 5px;
  background-color: var(--input);
  background-position: center;
  background-repeat: no-repeat;
  cursor: pointer;
  transition: border-color 160ms ease, background-color 160ms ease, box-shadow 160ms ease;
}

.remember-row:hover input { border-color: var(--accent); }

.remember-row input:checked {
  border-color: var(--accent);
  background-color: var(--accent);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='m3.5 8.2 2.8 2.8 6.2-6.3' fill='none' stroke='white' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
}

.remember-row input:focus-visible {
  outline: none;
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 16%, transparent);
}

form > button {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  height: 52px;
  overflow: hidden;
  border: 0;
  border-radius: 8px;
  color: #fff;
  background: linear-gradient(135deg, color-mix(in srgb, var(--accent) 88%, white 12%), var(--accent));
  box-shadow:
    0 12px 24px color-mix(in srgb, var(--accent) 26%, transparent),
    inset 0 1px 0 rgba(255, 255, 255, 0.25);
  font-size: 14px;
  font-weight: 780;
  letter-spacing: -0.01em;
  cursor: pointer;
  transition: background 160ms ease, box-shadow 160ms ease, transform 160ms ease;
}

form > button:hover {
  background: linear-gradient(135deg, var(--accent), var(--accent-hover));
  box-shadow:
    0 15px 28px color-mix(in srgb, var(--accent) 32%, transparent),
    inset 0 1px 0 rgba(255, 255, 255, 0.22);
  transform: translateY(-1px);
}

form > button:active { transform: translateY(0); }

form > button:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--accent) 30%, transparent);
  outline-offset: 3px;
}

form > button:disabled { opacity: 0.78; cursor: wait; transform: none; }

.button-arrow {
  width: 18px;
  height: 18px;
  stroke-width: 1.8;
  transition: transform 160ms ease;
}

form > button:hover .button-arrow { transform: translateX(2px); }

.button-spinner {
  display: none;
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255, 255, 255, 0.36);
  border-top-color: #fff;
  border-radius: 50%;
  animation: button-spin 700ms linear infinite;
}

#submitButton[data-loading="true"] .button-spinner { display: block; }
#submitButton[data-loading="true"] .button-arrow { display: none; }

.form-message {
  margin: -2px 0 0;
  padding: 12px 13px;
  border-radius: 8px;
  font-size: 13px;
  line-height: 1.45;
}

.form-message.error { color: #9c2031; background: #fff0f2; border: 1px solid #f3c8ce; }

html[data-theme="dark"] .form-message.error {
  color: #ff9aaa;
  background: rgba(227, 38, 62, 0.12);
  border-color: rgba(227, 38, 62, 0.34);
}

@keyframes auth-card-enter {
  from { opacity: 0; transform: translateY(12px) scale(0.988); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

@keyframes button-spin { to { transform: rotate(360deg); } }

@media (max-width: 520px) {
  .auth-theme-toggle { top: 14px; right: 14px; width: 38px; padding: 0; justify-content: center; }
  .auth-theme-toggle [data-theme-label] { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
  .auth-shell { place-items: start center; padding: 76px 14px 24px; overflow: auto; }
  .auth-shell::after { top: 20%; width: 94vw; }
  .auth-card { padding: 30px 24px; border-radius: 14px; }
  .auth-heading { margin: 34px 0 27px; }
  h1 { font-size: clamp(28px, 9vw, 34px); }
}

@media (max-height: 720px) and (min-width: 521px) {
  .auth-shell { place-items: start center; padding-top: 74px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}