:root {
  --login-bg: #edf2fb;
  --login-surface: #ffffff;
  --login-border: rgba(21, 34, 58, 0.16);
  --login-text: #182236;
  --login-muted: #64718a;
  --login-brand: #ed3023;
  --login-brand-hover: #d4281c;
  --login-brand-soft: rgba(237, 48, 35, 0.1);
  --login-shadow: 0 22px 52px rgba(18, 28, 45, 0.16);
  --card-grad-start: rgba(255, 255, 255, 0.82);
  --card-grad-end: rgba(255, 255, 255, 0.68);
  --card-stroke-start: rgba(255, 255, 255, 0.8);
  --card-stroke-mid: rgba(255, 255, 255, 0.2);
  --card-stroke-end: rgba(237, 48, 35, 0.22);
  --soft-control-bg: rgba(255, 255, 255, 0.78);
  --soft-control-border: rgba(21, 34, 58, 0.16);
  --brand-logo-border: rgba(21, 34, 58, 0.16);
  --remember-title: #1c2537;
  --focus-ring: rgba(32, 77, 165, 0.55);
  --help-link: #d33a2c;
}

html[data-theme="dark"] {
  --login-bg: #090b11;
  --login-surface: #0f1320;
  --login-border: rgba(255, 255, 255, 0.22);
  --login-text: #f3f6ff;
  --login-muted: rgba(226, 234, 255, 0.7);
  --login-brand: #ed3023;
  --login-brand-hover: #ff4a3d;
  --login-brand-soft: rgba(237, 48, 35, 0.16);
  --login-shadow: 0 28px 75px rgba(0, 0, 0, 0.58);
  --card-grad-start: rgba(255, 255, 255, 0.12);
  --card-grad-end: rgba(255, 255, 255, 0.05);
  --card-stroke-start: rgba(255, 255, 255, 0.32);
  --card-stroke-mid: rgba(255, 255, 255, 0.06);
  --card-stroke-end: rgba(255, 124, 85, 0.3);
  --soft-control-bg: rgba(10, 14, 22, 0.4);
  --soft-control-border: rgba(255, 255, 255, 0.2);
  --brand-logo-border: rgba(255, 255, 255, 0.26);
  --remember-title: #f8f9ff;
  --focus-ring: rgba(255, 255, 255, 0.82);
  --help-link: #ff8f80;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-width: 320px;
  min-height: 100vh;
  font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--login-text);
  background: var(--login-bg);
  overflow: hidden;
}

.auth-page {
  position: relative;
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: clamp(1rem, 3vw, 2.2rem);
}

#musicWaveCanvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

.auth-form-wrap {
  position: relative;
  z-index: 3;
  display: grid;
  width: min(100%, 520px);
}

.card {
  position: relative;
  width: 100%;
  padding: clamp(1.2rem, 2.2vw, 2.1rem);
  border: 1px solid var(--login-border);
  border-radius: 6px;
  background: var(--login-surface);
  box-shadow: var(--login-shadow);
}

.card::before {
  content: none;
}

.card-header {
  margin-bottom: 1.2rem;
}

.brand-row {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 1rem;
}

.brand-name {
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--login-muted);
}

.brand-logo {
  display: inline-grid;
  place-items: center;
  width: 34px;
  height: 34px;
  margin: 0;
  border: 1px solid var(--brand-logo-border);
  border-radius: 4px;
  background: var(--login-brand-soft);
}

.brand-logo img {
  width: 20px;
  height: 20px;
  object-fit: contain;
}

.card-title {
  margin: 0;
  font-size: clamp(2.1rem, 3.3vw, 2.9rem);
  line-height: 0.98;
  letter-spacing: -0.01em;
}

.card-description {
  margin: 0.75rem 0 0;
  font-size: 0.84rem;
  line-height: 1.7;
  color: var(--login-muted);
  max-width: 390px;
}

.card-content,
.card-content form {
  display: grid;
  gap: 0.95rem;
}

.recaptcha-container {
  display: flex;
  justify-content: center;
  min-height: 78px;
  padding: 0.6rem;
  overflow: hidden;
  border: 1px solid var(--soft-control-border);
  border-radius: 4px;
  background: var(--soft-control-bg);
}

.remember-me-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.9rem;
  padding: 0.75rem 0.95rem;
  border: 1px solid var(--soft-control-border);
  border-radius: 4px;
  background: var(--soft-control-bg);
  cursor: pointer;
}

.remember-copy {
  display: grid;
  gap: 0.15rem;
}

.remember-copy strong {
  font-size: 0.78rem;
  color: var(--remember-title);
}

.remember-copy span {
  font-size: 0.67rem;
  line-height: 1.35;
  color: var(--login-muted);
}

.remember-me-row input {
  width: 18px;
  height: 18px;
  margin: 0;
  accent-color: var(--login-brand);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  min-height: 46px;
  border: 1px solid transparent;
  border-radius: 4px;
  cursor: pointer;
  font: inherit;
  font-size: 0.87rem;
  font-weight: 700;
  transition: background 0.15s ease, border-color 0.15s ease, transform 0.15s ease, opacity 0.15s ease;
}

.btn-content {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
}

.google-logo {
  width: 18px;
  height: 18px;
  flex: 0 0 18px;
}

.btn-primary {
  border-color: var(--login-brand);
  background: var(--login-brand);
  color: #fff;
}

.btn-primary:hover:not(:disabled) {
  border-color: var(--login-brand-hover);
  background: var(--login-brand-hover);
  transform: translateY(-1px);
}

.btn-primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-primary:focus-visible,
.remember-me-row:focus-within {
  outline: 2px solid var(--focus-ring);
  outline-offset: 3px;
}

.alert {
  margin: 0 0 1rem;
  padding: 0.85rem 0.95rem;
  border: 1px solid #fecaca;
  border-radius: 4px;
  background: #fef2f2;
  color: #b42318;
  font-size: 0.78rem;
  line-height: 1.45;
}

.card-footer {
  margin-top: 1.35rem;
  padding-top: 1rem;
  border-top: 1px solid var(--soft-control-border);
  color: var(--login-muted);
  font-size: 0.72rem;
}

.auth-support {
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
}

.auth-support a {
  color: var(--help-link);
  font-weight: 700;
  text-decoration: none;
}

.auth-support a:hover {
  text-decoration: underline;
}

@media (max-width: 600px) {
  .card {
    padding: 1.05rem;
    border-radius: 6px;
  }

  .g-recaptcha {
    transform: scale(0.88);
    transform-origin: center;
  }
}

@media (max-width: 360px) {
  .g-recaptcha {
    transform: scale(0.78);
  }
}