:root {
  --ink: #111315;
  --ink-elev: #0f1012;
  --ink-soft: #161719;
  --paper: #f4f3ee;
  --mineral: #87908d;
  --signal: #bfdb46;
  --signal-soft: rgba(191, 219, 70, 0.14);
  --line: rgba(244, 243, 238, 0.08);
  --line-strong: rgba(244, 243, 238, 0.14);
  --danger-soft: rgba(201, 111, 62, 0.14);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --font: "Inter", system-ui, sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

::selection {
  background: var(--signal);
  color: var(--ink);
}

body {
  min-height: 100dvh;
  overflow-x: hidden;
}

.stage {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background: var(--ink);
}

.signal-wash {
  position: absolute;
  left: 50%;
  top: 42%;
  width: min(70vw, 560px);
  height: min(70vw, 560px);
  transform: translate(-50%, -50%);
  border-radius: 50%;
  background: rgba(191, 219, 70, 0.05);
  filter: blur(80px);
}

.shell {
  position: relative;
  z-index: 1;
  min-height: 100dvh;
  display: grid;
  place-items: center;
  padding: clamp(1.25rem, 4vw, 2.5rem);
}

.panel {
  width: min(100%, 420px);
  padding: clamp(1.6rem, 3.5vw, 2.1rem);
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--ink-elev);
  animation: rise 620ms var(--ease) both;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  .panel {
    animation: none;
  }
}

.brand {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.75rem;
  padding-bottom: 1.15rem;
  border-bottom: 1px solid var(--line);
}

.logo {
  display: block;
  width: auto;
  height: 28px;
}

.product {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--signal);
}

h1 {
  margin: 0 0 0.5rem;
  font-size: clamp(1.35rem, 3vw, 1.55rem);
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1.2;
  color: var(--paper);
}

.lede {
  margin: 0 0 1.55rem;
  max-width: 36ch;
  font-size: 0.925rem;
  line-height: 1.55;
  color: var(--mineral);
}

.form {
  display: grid;
  gap: 0.95rem;
}

.field {
  display: grid;
  gap: 0.4rem;
}

label {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--mineral);
}

input {
  width: 100%;
  appearance: none;
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  background: var(--ink-soft);
  color: var(--paper);
  font: 500 0.95rem/1.2 var(--font);
  padding: 0.85rem 0.95rem;
  outline: none;
  transition: border-color 150ms var(--ease), box-shadow 150ms var(--ease);
  caret-color: var(--signal);
}

input::placeholder {
  color: rgba(135, 144, 141, 0.7);
}

input:hover {
  border-color: rgba(244, 243, 238, 0.22);
}

input:focus {
  border-color: var(--signal);
  box-shadow: 0 0 0 3px var(--signal-soft);
}

.password-wrap {
  position: relative;
}

.password-wrap input {
  padding-right: 2.85rem;
}

.reveal {
  position: absolute;
  right: 0.3rem;
  top: 50%;
  transform: translateY(-50%);
  width: 2.25rem;
  height: 2.25rem;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: var(--mineral);
  display: grid;
  place-items: center;
  cursor: pointer;
  transition: color 140ms var(--ease), background 140ms var(--ease);
}

.reveal:hover,
.reveal[aria-pressed="true"] {
  color: var(--signal);
  background: var(--signal-soft);
}

.reveal:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 2px;
}

.icon-eye {
  width: 1.1rem;
  height: 1.1rem;
}

.error {
  margin: 0;
  padding: 0.7rem 0.85rem;
  border-radius: 10px;
  border: 1px solid rgba(201, 111, 62, 0.35);
  background: var(--danger-soft);
  color: #e8b59a;
  font-size: 0.875rem;
  line-height: 1.4;
}

.error[hidden] {
  display: none;
}

.submit {
  margin-top: 0.25rem;
  width: 100%;
  border: 1px solid var(--signal);
  border-radius: 10px;
  padding: 0.9rem 1rem;
  background: var(--signal);
  color: var(--ink);
  font-family: var(--font);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  cursor: pointer;
  transition: background 150ms var(--ease), transform 150ms var(--ease);
}

.submit:hover:not(:disabled) {
  background: #c9e65a;
}

.submit:active:not(:disabled) {
  transform: translateY(1px);
}

.submit:focus-visible {
  outline: 2px solid var(--paper);
  outline-offset: 3px;
}

.submit:disabled {
  cursor: wait;
  opacity: 0.88;
}

.submit-busy {
  display: none;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.submit.is-busy .submit-label {
  display: none;
}

.submit.is-busy .submit-busy {
  display: inline-flex;
}

.spinner {
  width: 0.95rem;
  height: 0.95rem;
  border-radius: 50%;
  border: 2px solid rgba(17, 19, 21, 0.25);
  border-top-color: var(--ink);
  animation: spin 0.7s linear infinite;
}

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

.foot {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  margin-top: 1.45rem;
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(135, 144, 141, 0.85);
}

.dot {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: currentColor;
}

@media (max-width: 420px) {
  .panel {
    padding: 1.35rem 1.15rem 1.45rem;
  }

  .logo {
    height: 24px;
  }

  .lede {
    max-width: none;
  }
}