:root {
  --font-body: "Manrope", sans-serif;
  --font-heading: "Space Grotesk", sans-serif;
  --font-accent: "Space Grotesk", sans-serif;
  --bg: #08090d;
  --bg-card: rgba(18, 20, 31, 0.94);
  --text: #f5f7fb;
  --text-muted: #9aa3b2;
  --border: rgba(148, 163, 184, 0.18);
  --accent: #ff4d5a;
  --accent-hover: #ff6b73;
  --accent-2: #8b5cf6;
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
}

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--text);
  background:
    radial-gradient(circle at 14% 20%, rgba(255, 77, 90, 0.16), transparent 24%),
    radial-gradient(circle at 86% 10%, rgba(91, 79, 230, 0.18), transparent 22%),
    radial-gradient(circle at 50% 95%, rgba(255, 196, 61, 0.08), transparent 28%),
    linear-gradient(180deg, #08090d 0%, #0b0e14 42%, #08090d 100%);
  background-attachment: fixed;
  overflow-x: hidden;
}

body::before,
body::after {
  content: "";
  position: fixed;
  width: clamp(18rem, 28vw, 28rem);
  height: clamp(18rem, 28vw, 28rem);
  border-radius: 999px;
  filter: blur(16px);
  pointer-events: none;
  z-index: 0;
  animation: orbFloat 14s ease-in-out infinite alternate;
}

body::before {
  top: -8rem;
  left: -6rem;
  background: radial-gradient(circle, rgba(255, 77, 90, 0.24) 0%, rgba(255, 77, 90, 0.06) 45%, transparent 72%);
}

body::after {
  right: -6rem;
  bottom: -8rem;
  background: radial-gradient(circle, rgba(139, 92, 246, 0.2) 0%, rgba(139, 92, 246, 0.06) 45%, transparent 72%);
  animation-delay: -5s;
}

.auth-grid {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: radial-gradient(circle at center, rgba(0, 0, 0, 0.55), transparent 82%);
  opacity: 0.3;
}

.auth-shell {
  position: relative;
  z-index: 1;
  min-height: 100dvh;
  display: grid;
  place-items: center;
  padding: 24px;
  isolation: isolate;
}

.auth-card {
  position: relative;
  width: min(100%, 520px);
  padding: 30px;
  border-radius: 28px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  backdrop-filter: blur(18px);
  box-shadow:
    0 30px 60px -24px rgba(0, 0, 0, 0.72),
    0 0 0 1px rgba(255, 255, 255, 0.03);
  overflow: hidden;
  animation: cardIn 0.7s cubic-bezier(0.2, 0.8, 0.2, 1) both;
}

.auth-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 4px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
}

.auth-card::after {
  content: "";
  position: absolute;
  inset: -1px;
  background:
    radial-gradient(circle at top right, rgba(255, 77, 90, 0.12), transparent 24%),
    radial-gradient(circle at bottom left, rgba(139, 92, 246, 0.1), transparent 24%);
  pointer-events: none;
  z-index: -1;
}

.auth-brand-row {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-mark {
  width: 54px;
  height: 54px;
  display: grid;
  place-items: center;
  border-radius: 18px;
  background: linear-gradient(135deg, rgba(255, 77, 90, 0.2), rgba(139, 92, 246, 0.18));
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: 0 18px 30px -20px rgba(255, 77, 90, 0.55);
  font-family: var(--font-accent);
  font-size: 1.1rem;
  font-weight: 700;
}

.brand-name {
  margin: 0;
  font-family: var(--font-heading);
  font-size: 1.22rem;
  font-weight: 700;
  letter-spacing: -0.03em;
}

.brand-tagline {
  margin: 0.2rem 0 0;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.auth-header {
  margin-top: 1.65rem;
}

.auth-eyebrow {
  margin: 0 0 0.7rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.72rem;
  font-weight: 700;
}

.auth-title {
  margin: 0;
  font-family: var(--font-heading);
  font-size: clamp(2.1rem, 5vw, 3rem);
  line-height: 0.96;
  letter-spacing: -0.04em;
}

.auth-copy {
  margin: 0.95rem 0 0;
  color: var(--text-muted);
  line-height: 1.65;
  font-size: 0.98rem;
}

.auth-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 1.4rem 0 1.75rem;
}

.auth-chip {
  padding: 0.55rem 0.88rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-muted);
  font-size: 0.84rem;
  line-height: 1;
}

.auth-message[hidden] {
  display: none;
}

.auth-message {
  margin-bottom: 1rem;
  padding: 0.95rem 1rem;
  border-radius: 16px;
  border: 1px solid transparent;
  font-size: 0.95rem;
  line-height: 1.45;
}

.auth-message.is-error {
  color: #ff9ca5;
  background: rgba(255, 77, 90, 0.12);
  border-color: rgba(255, 77, 90, 0.28);
}

.auth-message.is-success {
  color: #8ce8a9;
  background: rgba(34, 197, 94, 0.12);
  border-color: rgba(34, 197, 94, 0.28);
}

.auth-form {
  display: grid;
  gap: 1rem;
}

.field {
  display: grid;
  gap: 0.55rem;
}

.field-label {
  color: var(--text-muted);
  font-size: 0.92rem;
  font-weight: 600;
}

.field-input {
  width: 100%;
  min-height: 54px;
  border: 1px solid rgba(148, 163, 184, 0.16);
  border-radius: 16px;
  padding: 0.95rem 1rem;
  background: rgba(255, 255, 255, 0.03);
  color: var(--text);
  font: inherit;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease, background 0.2s ease;
}

.field-input::placeholder {
  color: rgba(154, 163, 178, 0.9);
}

.field-input:focus {
  outline: none;
  border-color: rgba(255, 77, 90, 0.78);
  box-shadow:
    0 0 0 4px rgba(255, 77, 90, 0.16),
    0 18px 30px -22px rgba(255, 77, 90, 0.55);
  transform: translateY(-1px);
  background: rgba(255, 255, 255, 0.04);
}

.field-hint {
  color: var(--text-muted);
  font-size: 0.8rem;
  line-height: 1.45;
}

.field-feedback {
  min-height: 1.2em;
}

.field-feedback.is-error {
  color: #ff9ca5;
}

.field-feedback.is-success {
  color: #8ce8a9;
}

.field-feedback.is-pending {
  color: #fbbf24;
}

.field-input.is-invalid {
  border-color: rgba(255, 77, 90, 0.72);
}

.field-input.is-valid {
  border-color: rgba(34, 197, 94, 0.72);
}

.field-input.is-pending {
  border-color: rgba(251, 191, 36, 0.72);
}

.auth-button {
  width: 100%;
  min-height: 54px;
  border: 0;
  border-radius: 16px;
  background: linear-gradient(135deg, var(--accent), #ff6877);
  color: white;
  font: inherit;
  font-size: 0.98rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  cursor: pointer;
  box-shadow: 0 20px 34px -20px rgba(255, 77, 90, 0.75);
  transition: transform 0.2s ease, box-shadow 0.2s ease, filter 0.2s ease, opacity 0.2s ease;
}

.auth-button:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 24px 38px -18px rgba(255, 77, 90, 0.95);
  filter: saturate(1.05);
}

.auth-button:disabled {
  cursor: not-allowed;
  opacity: 0.72;
  box-shadow: none;
}

.auth-footer {
  margin-top: 1.45rem;
  padding-top: 1.2rem;
  border-top: 1px solid rgba(148, 163, 184, 0.16);
  text-align: center;
}

.auth-footer p {
  margin: 0;
}

.auth-footer p + p {
  margin-top: 0.6rem;
}

.auth-footer a {
  color: white;
  font-weight: 700;
  text-decoration: none;
}

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

.auth-note {
  color: var(--text-muted);
  font-size: 0.82rem;
  line-height: 1.5;
}

.site-footer {
  width: min(100%, 520px);
  margin: 1.4rem auto 0;
  padding: 1.15rem 0 0;
  border-top: 1px solid var(--border);
  text-align: center;
  position: relative;
  z-index: 1;
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0 0 0.6rem;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.2rem 1.5rem;
}

.footer-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.86rem;
  transition: color 0.2s;
}

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

.footer-copy {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.82rem;
}

[data-theme="light"] {
  --font-body: "Manrope", sans-serif;
  --font-heading: "Space Grotesk", sans-serif;
  --font-accent: "Space Grotesk", sans-serif;
  --bg: #f3f4f8;
  --bg-card: rgba(255, 255, 255, 0.94);
  --text: #12141b;
  --text-muted: #5b6473;
  --border: rgba(17, 24, 39, 0.12);
  --accent: #d83b4f;
  --accent-hover: #ff5164;
  --accent-2: #5b4ee6;
}

[data-theme="light"] body {
  background:
    radial-gradient(circle at 14% 20%, rgba(255, 77, 90, 0.08), transparent 24%),
    radial-gradient(circle at 86% 10%, rgba(91, 79, 230, 0.08), transparent 22%),
    linear-gradient(180deg, #f9fafc 0%, #eef1f7 52%, #f8f9fb 100%);
}

[data-theme="light"] body::before {
  background: radial-gradient(circle, rgba(255, 77, 90, 0.16) 0%, rgba(255, 77, 90, 0.04) 45%, transparent 72%);
}

[data-theme="light"] body::after {
  background: radial-gradient(circle, rgba(139, 92, 246, 0.14) 0%, rgba(139, 92, 246, 0.04) 45%, transparent 72%);
}

[data-theme="light"] .auth-grid {
  background-image:
    linear-gradient(rgba(17, 24, 39, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(17, 24, 39, 0.03) 1px, transparent 1px);
  opacity: 0.24;
}

[data-theme="light"] .auth-card {
  background: rgba(255, 255, 255, 0.94);
  border-color: rgba(17, 24, 39, 0.12);
  box-shadow:
    0 30px 60px -24px rgba(15, 23, 42, 0.22),
    0 0 0 1px rgba(255, 255, 255, 0.65);
}

[data-theme="light"] .auth-card::before {
  background: linear-gradient(90deg, #d83b4f, #5b4ee6);
}

[data-theme="light"] .auth-card::after {
  background:
    radial-gradient(circle at top right, rgba(255, 77, 90, 0.08), transparent 24%),
    radial-gradient(circle at bottom left, rgba(139, 92, 246, 0.08), transparent 24%);
}

[data-theme="light"] .brand-mark {
  background: linear-gradient(135deg, rgba(255, 77, 90, 0.16), rgba(139, 92, 246, 0.14));
  box-shadow: 0 18px 30px -20px rgba(255, 77, 90, 0.28);
}

[data-theme="light"] .auth-chip {
  background: rgba(255, 255, 255, 0.72);
  border-color: rgba(17, 24, 39, 0.12);
  color: var(--text-muted);
}

[data-theme="light"] .field-input {
  background: rgba(255, 255, 255, 0.9);
  border-color: rgba(17, 24, 39, 0.12);
  color: var(--text);
}

[data-theme="light"] .field-input::placeholder {
  color: rgba(91, 100, 115, 0.8);
}

[data-theme="light"] .field-input:focus {
  border-color: rgba(216, 59, 79, 0.78);
  box-shadow:
    0 0 0 4px rgba(216, 59, 79, 0.14),
    0 18px 30px -22px rgba(91, 79, 230, 0.28);
  background: rgba(255, 255, 255, 0.96);
}

[data-theme="light"] .auth-button {
  background: linear-gradient(135deg, #d83b4f, #5b4ee6);
  box-shadow: 0 22px 36px -20px rgba(91, 79, 230, 0.38);
}

[data-theme="light"] .auth-button:hover:not(:disabled) {
  box-shadow: 0 26px 42px -18px rgba(91, 79, 230, 0.52);
}

[data-theme="light"] .auth-footer {
  border-top-color: rgba(17, 24, 39, 0.12);
}

[data-theme="light"] .auth-footer a {
  color: #d83b4f;
}

[data-theme="light"] .auth-note {
  color: var(--text-muted);
}

[data-theme="manhwa"] {
  --font-body: "Noto Sans KR", "Manrope", sans-serif;
  --font-heading: "Noto Sans KR", "Space Grotesk", sans-serif;
  --font-accent: "Space Grotesk", "Noto Sans KR", sans-serif;
}

[data-theme="manhwa"] body {
  background:
    radial-gradient(circle at 14% 18%, rgba(125, 231, 255, 0.22), transparent 22%),
    radial-gradient(circle at 84% 12%, rgba(143, 123, 255, 0.22), transparent 24%),
    radial-gradient(circle at 50% 92%, rgba(255, 216, 107, 0.08), transparent 26%),
    repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.022) 0 1px, transparent 1px 108px),
    repeating-linear-gradient(180deg, rgba(255, 255, 255, 0.016) 0 1px, transparent 1px 164px),
    linear-gradient(180deg, #050713 0%, #0d1224 44%, #050713 100%);
}

[data-theme="manhwa"] body::before {
  background: radial-gradient(circle, rgba(125, 231, 255, 0.32) 0%, rgba(125, 231, 255, 0.08) 45%, transparent 72%);
}

[data-theme="manhwa"] body::after {
  background: radial-gradient(circle, rgba(143, 123, 255, 0.28) 0%, rgba(143, 123, 255, 0.08) 45%, transparent 72%);
}

[data-theme="manhwa"] .auth-grid {
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  opacity: 0.36;
}

[data-theme="manhwa"] .auth-card {
  background: rgba(12, 16, 30, 0.92);
  border-color: rgba(125, 231, 255, 0.22);
  box-shadow:
    0 34px 72px -28px rgba(16, 15, 34, 0.82),
    0 0 0 1px rgba(255, 255, 255, 0.04);
}

[data-theme="manhwa"] .auth-card::before {
  background: linear-gradient(90deg, #7de7ff, #ffcb6b, #8f7bff);
}

[data-theme="manhwa"] .auth-card::after {
  background:
    radial-gradient(circle at top right, rgba(125, 231, 255, 0.14), transparent 24%),
    radial-gradient(circle at bottom left, rgba(143, 123, 255, 0.12), transparent 24%);
}

[data-theme="manhwa"] .brand-mark {
  background: linear-gradient(135deg, rgba(125, 231, 255, 0.24), rgba(143, 123, 255, 0.20));
  box-shadow: 0 18px 30px -20px rgba(125, 231, 255, 0.55);
}

[data-theme="manhwa"] .auth-eyebrow {
  color: #a8ecff;
}

[data-theme="manhwa"] .auth-chip {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(125, 231, 255, 0.18);
  color: #dff9ff;
}

[data-theme="manhwa"] .field-input {
  background: rgba(255, 255, 255, 0.04);
  border-color: rgba(125, 231, 255, 0.18);
}

[data-theme="manhwa"] .field-input::placeholder {
  color: rgba(199, 194, 227, 0.76);
}

[data-theme="manhwa"] .field-input:focus {
  border-color: rgba(125, 231, 255, 0.82);
  box-shadow:
    0 0 0 4px rgba(125, 231, 255, 0.16),
    0 18px 30px -22px rgba(143, 123, 255, 0.55);
  background: rgba(255, 255, 255, 0.05);
}

[data-theme="manhwa"] .auth-button {
  background: linear-gradient(135deg, #7de7ff, #8f7bff);
  box-shadow: 0 22px 36px -20px rgba(125, 231, 255, 0.7);
}

[data-theme="manhwa"] .auth-button:hover:not(:disabled) {
  box-shadow: 0 26px 42px -18px rgba(125, 231, 255, 0.92);
}

[data-theme="manhwa"] .auth-footer {
  border-top-color: rgba(156, 163, 255, 0.16);
}

[data-theme="manhwa"] .auth-footer a {
  color: #fff6f9;
}

[data-theme="manhwa"] .auth-note {
  color: #c0bbdb;
}

@keyframes cardIn {
  from {
    opacity: 0;
    transform: translateY(18px) scale(0.975);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes orbFloat {
  from {
    transform: translateY(-10px) scale(0.98);
  }
  to {
    transform: translateY(12px) scale(1.03);
  }
}

@media (max-width: 640px) {
  .auth-shell {
    padding: 16px;
  }

  .auth-card {
    padding: 22px;
    border-radius: 24px;
  }

  .brand-mark {
    width: 48px;
    height: 48px;
    border-radius: 16px;
  }

  .auth-copy {
    font-size: 0.95rem;
  }
}