:root {
  --portal-bg: oklch(18.8% 0.008 285);
  --portal-surface: oklch(25% 0.006 285);
  --portal-fg: oklch(91.3% 0.042 79);
  --portal-muted: oklch(70.5% 0.02 75);
  --portal-border: oklch(38% 0.01 80);
  --portal-accent: oklch(72.8% 0.09 76);
  --portal-danger: oklch(62% 0.19 27);
  --portal-font: Poppins, "Avenir Next", "Segoe UI", system-ui, sans-serif;
  --portal-mono: "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;
}

html {
  min-block-size: 100%;
  background: var(--portal-bg);
}

body.portal-login-page {
  min-block-size: 100svh;
  margin: 0;
  overflow-x: hidden;
  color: var(--portal-fg);
  background: var(--portal-bg) url("../images/tunnel-login-bg-spring-v3.png") center center / cover no-repeat fixed;
  font-family: var(--portal-font);
  -webkit-font-smoothing: antialiased;
}

body.portal-login-page::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    linear-gradient(90deg, rgb(0 0 0 / 0.34) 0%, rgb(0 0 0 / 0.16) 29%, transparent 52%),
    linear-gradient(to bottom, rgb(0 0 0 / 0.06), transparent 38%, rgb(0 0 0 / 0.1));
}

.portal-shell {
  position: relative;
  z-index: 1;
  display: grid;
  inline-size: 100%;
  min-inline-size: 0;
  min-block-size: 100svh;
  place-items: end start;
  padding-block: max(24px, env(safe-area-inset-top)) max(38px, env(safe-area-inset-bottom));
  padding-inline: clamp(28px, 7vw, 132px);
}

.portal-panel {
  inline-size: min(388px, calc(100vw - 32px));
  max-inline-size: 388px;
  min-inline-size: 0;
  margin-block-end: clamp(34px, 6vh, 74px);
  padding: 20px 26px 18px;
  border: 1px solid color-mix(in oklch, var(--portal-accent) 22%, transparent);
  border-radius: 12px;
  background: rgb(18 18 20 / 0.94);
  box-shadow: 0 24px 70px rgb(0 0 0 / 0.42), inset 0 1px 0 rgb(255 255 255 / 0.045);
  backdrop-filter: blur(18px) saturate(0.82);
  animation: portal-arrive 760ms cubic-bezier(0.22, 1, 0.36, 1) both;
}

.portal-brand-mark {
  display: block;
  inline-size: 264px;
  max-inline-size: 100%;
  block-size: auto;
  margin-block-end: 14px;
  user-select: none;
}

.portal-panel h1 {
  margin: 0 0 14px;
  color: var(--portal-fg);
  font-size: clamp(24px, 3vw, 29px);
  font-weight: 600;
  letter-spacing: -0.035em;
  line-height: 1.2;
}

.portal-field {
  margin-block-end: 10px;
}

.portal-field label {
  display: block;
  margin-block-end: 5px;
  color: var(--portal-fg);
  font-size: 12px;
  font-weight: 500;
}

.portal-input {
  inline-size: 100%;
  min-block-size: 44px;
  padding: 0 14px;
  border: 1px solid var(--portal-border);
  border-radius: 8px;
  outline: 0;
  color: var(--portal-fg);
  caret-color: var(--portal-accent);
  background: rgb(13 13 15 / 0.76);
  font: 15px var(--portal-font);
  transition: border-color 180ms ease, background-color 180ms ease, box-shadow 180ms ease;
}

.portal-input::placeholder {
  color: color-mix(in oklch, var(--portal-muted) 68%, transparent);
}

.portal-input:hover {
  border-color: color-mix(in oklch, var(--portal-border) 55%, var(--portal-fg));
}

.portal-input:focus-visible {
  border-color: var(--portal-accent);
  background: rgb(9 9 11 / 0.92);
  box-shadow: 0 0 0 3px color-mix(in oklch, var(--portal-accent) 18%, transparent);
}

.portal-option-row {
  display: flex;
  align-items: center;
  min-block-size: 44px;
  margin-block: -2px 5px;
}

.portal-remember {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--portal-muted);
  font-size: 12px;
  cursor: pointer;
  user-select: none;
}

.portal-remember input {
  inline-size: 17px;
  block-size: 17px;
  margin: 0;
  accent-color: var(--portal-fg);
}

.portal-login-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  inline-size: 100%;
  min-block-size: 49px;
  border: 1px solid color-mix(in oklch, var(--portal-accent) 70%, white);
  border-radius: 8px;
  color: var(--portal-bg);
  background: var(--portal-accent);
  font: 700 14px var(--portal-font);
  letter-spacing: 0.02em;
  cursor: pointer;
  box-shadow: 0 8px 20px rgb(0 0 0 / 0.22);
  transition: transform 160ms ease, filter 160ms ease;
}

.portal-login-button:hover {
  filter: brightness(1.06);
}

.portal-login-button:active {
  transform: translateY(1px);
  filter: brightness(0.97);
}

.portal-login-button:focus-visible,
.portal-help-link:focus-visible {
  outline: 3px solid color-mix(in oklch, var(--portal-fg) 80%, transparent);
  outline-offset: 3px;
}

.portal-login-button:disabled {
  cursor: wait;
  filter: saturate(0.35);
}

.portal-error {
  margin: 0 0 12px;
  color: oklch(78% 0.11 30);
  font-size: 12px;
  line-height: 1.5;
}

.portal-status {
  min-block-size: 18px;
  margin: 10px 0 0;
  color: var(--portal-muted);
  font-size: 11px;
  line-height: 1.5;
  text-align: center;
}

.portal-status[hidden] {
  display: none;
}

.portal-help-link {
  display: block;
  min-block-size: 44px;
  padding-block: 12px 0;
  color: var(--portal-muted);
  font-size: 12px;
  text-align: center;
  text-decoration: none;
}

.portal-help-link:hover {
  color: var(--portal-fg);
}

.portal-security-note {
  position: absolute;
  inset-block-end: max(14px, env(safe-area-inset-bottom));
  inset-inline-end: clamp(18px, 4vw, 56px);
  margin: 0;
  color: rgb(232 217 184 / 0.45);
  font: 9px var(--portal-mono);
  letter-spacing: 0.07em;
}

@keyframes portal-arrive {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 560px) {
  body.portal-login-page {
    background-attachment: scroll;
    background-position: 64% bottom;
    background-size: auto 112%;
  }

  body.portal-login-page::before {
    background: linear-gradient(to bottom, rgb(8 8 9 / 0.04), transparent 34%, rgb(8 8 9 / 0.38) 72%);
  }

  .portal-shell {
    place-items: end center;
    padding-inline: 16px;
    padding-block-end: max(24px, env(safe-area-inset-bottom));
  }

  .portal-panel {
    margin-block-end: 0;
    padding: 20px 20px 17px;
    border-radius: 10px;
  }

  .portal-brand-mark {
    inline-size: 245px;
    margin-block-end: 12px;
  }

  .portal-security-note {
    display: none;
  }
}

@media (max-height: 740px) {
  .portal-shell {
    padding-block: 18px;
  }

  .portal-panel {
    margin-block-end: 0;
    padding-block: 16px;
  }

  .portal-brand-mark {
    margin-block-end: 8px;
  }

  .portal-panel h1 {
    margin-block-end: 10px;
  }

  .portal-security-note {
    display: none;
  }
}

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