:root {
  --bg: hsl(0 0% 0%);
  --fg: rgba(255, 255, 255, 0.93);
  --muted: rgba(255, 255, 255, 0.6);
  --surface-alt: rgba(255, 255, 255, 0.043);
  --panel-solid: rgb(14, 14, 14);
  --accent: #3b82f6;
  --accent-fill: #2563eb;
  --accent-fill-hover: #1d4ed8;
  --accent-fg: #fff;
  --accent-weak: color-mix(in srgb, var(--accent) 14%, transparent);
  --danger: #e66767;
  --success: #1aa878;
  --shadow-modal: 0 24px 64px rgba(0, 0, 0, 0.34);
  --rad-tag: 8px;
  --rad-ctl: 12px;
  --rad-card: 12px;
  --rad-panel: 24px;
  color-scheme: dark;
}

:root[data-mode="dark"] {
  --bg: hsl(0 0% 0%);
  --panel-solid: rgb(14, 14, 14);
}

:root[data-mode="grey"] {
  --bg: hsl(0 0% 7%);
  --panel-solid: rgb(26, 26, 26);
}

:root[data-mode="ash"] {
  --bg: hsl(0 0% 12%);
  --panel-solid: rgb(38, 38, 38);
}

:root[data-mode="light"] {
  --bg: hsl(0 0% 100%);
  --fg: rgba(0, 0, 0, 0.9);
  --muted: rgba(0, 0, 0, 0.58);
  --surface-alt: rgba(0, 0, 0, 0.045);
  --panel-solid: rgb(244, 244, 244);
  --accent: #3b82f6;
  --danger: #e04442;
  --success: #0f9d64;
  --shadow-modal: 0 24px 64px rgba(0, 0, 0, 0.16);
  color-scheme: light;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  min-height: 100vh;
  padding: 20px 0;
  overflow-x: hidden;
  overflow-y: auto;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  color: var(--fg);
  font-family: 'Poppins', -apple-system, sans-serif;
}

.login-wrapper,
.card-wrap {
  position: relative;
  width: 100%;
  max-width: 420px;
  padding: 20px;
  animation: auth-enter 300ms cubic-bezier(.25, 1, .5, 1);
}

.login-wrapper { max-width: 400px; }

@keyframes auth-enter {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

.login-card,
.card {
  padding: 40px 36px 32px;
  background: var(--panel-solid);
  border: 0;
  border-radius: var(--rad-card);
  box-shadow: var(--shadow-modal);
}

.card { text-align: initial; }
.card-wrap .card { padding-top: 36px; padding-bottom: 28px; }

.logo { text-align: center; margin-bottom: 24px; }
.login-card .logo { margin-bottom: 28px; }
.logo img { height: 40px; margin-bottom: 10px; }
.login-card .logo img { height: 44px; margin-bottom: 12px; }
:root[data-mode="light"] .logo img { filter: invert(1); }

h1 {
  margin-bottom: 8px;
  color: var(--fg);
  font-size: 1.25rem;
  /* 600, not 700. At 20-22px on a small card, 700 Poppins reads as a shout —
     the heading is already the largest thing here, so it does not need weight
     to win too. */
  font-weight: 600;
  letter-spacing: -0.5px;
  text-align: center;
}

.login-card h1 { margin-bottom: 0; font-size: 1.375rem; letter-spacing: -0.8px; }
.logo p { margin-top: 4px; color: var(--muted); font-size: 0.75rem; letter-spacing: 0.3px; }
.desc { margin-bottom: 24px; color: var(--muted); font-size: 0.8125rem; line-height: 1.5; text-align: center; }
.desc strong { color: var(--fg); }

.role-badge {
  display: inline-block;
  padding: 4px 12px;
  border: 0;
  border-radius: var(--rad-tag);
  background: var(--accent-weak);
  color: var(--accent);
  font-size: 0.75rem;
  font-weight: 600;
}

.field { margin-bottom: 18px; }
.card-wrap .field { margin-bottom: 16px; }
.field label {
  display: block;
  margin-bottom: 7px;
  color: var(--muted);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.8px;
  text-transform: uppercase;
}

.field input,
.otp-input {
  width: 100%;
  padding: 13px 16px;
  border: 1.5px solid transparent;
  border-radius: var(--rad-ctl);
  background: var(--surface-alt);
  color: var(--fg);
  font: 0.9375rem 'Poppins', sans-serif;
  transition: border-color 160ms ease, box-shadow 160ms ease;
}

.card-wrap .field input { padding-block: 12px; font-size: 0.875rem; }
.field input::placeholder,
.otp-input::placeholder { color: color-mix(in srgb, var(--fg) 30%, transparent); }
.field input:focus,
.otp-input:focus {
  outline: none;
}
.field input[readonly] { opacity: 0.6; cursor: not-allowed; }
.field .hint { margin-top: 4px; color: var(--muted); font-size: 0.6875rem; opacity: 0.7; }

.otp-input {
  display: block;
  width: 200px;
  margin: 0 auto 20px;
  padding: 16px;
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: 10px;
  text-align: center;
}

.remember-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  /* space-between alone leaves the two ends touching once the card is narrow
     enough that the label and the link fill the row — which is every phone.
     The gap is the floor they can never close past. */
  gap: 16px;
  margin-bottom: 20px;
  font-size: 0.8125rem;
}
.remember-row label {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  color: var(--muted);
  cursor: pointer;
  font-size: 0.8125rem;
  font-weight: 400;
  letter-spacing: 0;
  text-transform: none;
}
.remember-row input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--accent);
  cursor: pointer;
}

.btn-submit,
.btn {
  width: 100%;
  min-height: 48px;
  padding: 14px;
  border: 0;
  border-radius: var(--rad-ctl);
  background: var(--accent-fill);
  color: var(--accent-fg);
  cursor: pointer;
  /* 500. A full-width accent-filled button is already the loudest element on
     the card; 600 on top of the fill made the label look bolder than the
     heading above it. */
  font: 500 0.9375rem 'Poppins', sans-serif;
  letter-spacing: 0.2px;
  transition: background 160ms ease;
}
.btn { margin-top: 4px; }
.btn-submit:hover,
.btn:hover {
  background: var(--accent-fill-hover);
  filter: none;
  transform: none;
  box-shadow: none;
}
.btn-submit:focus-visible,
.btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.error-msg,
.success {
  margin-bottom: 18px;
  padding: 11px 16px;
  border: 0;
  border-radius: var(--rad-ctl);
  font-size: 0.8125rem;
  font-weight: 400;
  line-height: 1.5;
  text-align: center;
}
.error-msg { background: color-mix(in srgb, var(--danger) 10%, transparent); color: var(--danger); }
.success { padding-block: 14px; background: color-mix(in srgb, var(--success) 10%, transparent); color: var(--success); }

.footer-link,
.footer,
.back,
.resend { color: var(--muted); font-size: 0.8125rem; text-align: center; }
.footer-link { margin-top: 20px; }
.footer { margin-top: 18px; }
.back { margin-top: 20px; }
.resend { margin-top: 20px; }
.resend + .back { margin-top: 12px; }

.footer-link a,
.footer a,
.back a,
.resend a,
.forgot-link { color: var(--accent); font-weight: 400; text-decoration: none; }
.footer-link a:hover,
.footer a:hover,
.back a:hover,
.resend a:hover,
.forgot-link:hover { text-decoration: underline; }

.icon { margin-bottom: 16px; font-size: 2.5rem; }
.card:has(.otp-input) { text-align: center; }

@media (max-width: 480px) {
  body { align-items: flex-start; padding: 12px 0; }
  .login-wrapper,
  .card-wrap { padding: 12px; }
  .login-card,
  .card { padding: 32px 24px 28px; }
  .field input { padding: 14px 16px; font-size: 1rem; }
}

@media (prefers-reduced-motion: reduce) {
  .login-wrapper,
  .card-wrap { animation: none; }
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: 0.01ms !important; }
}