* {
  box-sizing: border-box;
}

body {
  display: grid;
  align-content: start;
  justify-items: center;
  min-height: 100vh;
  margin: 0;
  padding: clamp(40px, 14vh, 144px) 24px 24px;
  color: var(--color-text);
  background:
    radial-gradient(
      circle at top left,
      color-mix(in srgb, var(--color-accent) 16%, transparent),
      transparent 32%
    ),
    radial-gradient(
      circle at top right,
      color-mix(in srgb, var(--color-warning) 10%, transparent),
      transparent 28%
    ),
    linear-gradient(
      180deg,
      var(--color-background),
      var(--color-background-deep)
    );
}

body::before {
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(56, 189, 248, 0.11) 1px, transparent 1px),
    linear-gradient(90deg, rgba(56, 189, 248, 0.11) 1px, transparent 1px),
    linear-gradient(rgba(148, 163, 184, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 163, 184, 0.055) 1px, transparent 1px);
  background-position: center top;
  background-size:
    160px 160px,
    160px 160px,
    32px 32px,
    32px 32px;
  mask-image: linear-gradient(180deg, black, rgba(0, 0, 0, 0.72) 52%, transparent 96%);
  pointer-events: none;
  content: "";
}

main {
  position: relative;
  z-index: 1;
  width: min(420px, 100%);
}

.card {
  padding: 24px;
  border: 1px solid var(--color-border);
  border-radius: 20px;
  background:
    linear-gradient(
      180deg,
      color-mix(in srgb, var(--color-surface) 92%, transparent),
      color-mix(in srgb, var(--color-surface-strong) 96%, transparent)
    );
  box-shadow: var(--shadow-panel);
  backdrop-filter: blur(16px);
}

.eyebrow,
.section-label,
label span {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.accent {
  color: var(--color-accent);
}

.eyebrow {
  color: var(--color-text);
}

h1 {
  margin: 8px 0 0;
  font-size: clamp(2rem, 4vw, 3.3rem);
  line-height: 0.98;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.intro {
  margin: 0;
  color: var(--color-muted);
  font-size: 1rem;
  line-height: 1.65;
}

.section-label,
label span {
  color: var(--color-muted);
}

.panel {
  display: grid;
  gap: 18px;
}

.signin-head h2 {
  margin: 8px 0 0;
  font-size: 1.6rem;
  line-height: 1.1;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.signin-head p {
  margin: 10px 0 0;
  color: var(--color-muted);
  line-height: 1.55;
}

form {
  display: grid;
  gap: 14px;
}

label {
  display: grid;
  gap: 8px;
}

.password-field {
  position: relative;
}

input {
  width: 100%;
  padding: 13px 14px;
  border: 1px solid var(--color-border);
  border-radius: 14px;
  color: var(--color-text);
  background: color-mix(in srgb, var(--color-surface-strong) 78%, transparent);
  font: inherit;
  transition:
    border-color 140ms ease,
    box-shadow 140ms ease,
    background-color 140ms ease;
}

input::placeholder {
  color: color-mix(in srgb, var(--color-muted) 78%, transparent);
}

input:focus {
  border-color: var(--color-accent);
  outline: none;
  background: var(--color-surface-strong);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-accent) 16%, transparent);
}

.password-field input {
  padding-right: 48px;
}

.caps-lock-indicator {
  position: absolute;
  top: 50%;
  right: 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  margin-top: -11px;
  border: 1px solid color-mix(in srgb, var(--color-warning) 44%, transparent);
  border-radius: 7px;
  color: var(--color-warning);
  background: color-mix(in srgb, var(--color-warning) 14%, transparent);
  opacity: 0;
  pointer-events: none;
  transform: scale(0.9);
  transition:
    opacity 140ms ease,
    transform 140ms ease;
}

.caps-lock-indicator svg {
  display: block;
  width: 13px;
  height: 13px;
}

.caps-lock-indicator.is-visible {
  opacity: 1;
  transform: scale(1);
}

button {
  width: 100%;
  min-height: 28px;
  padding: 0 18px;
  border: 0;
  border-radius: 14px;
  color: var(--color-accent-contrast);
  background: var(--color-accent);
  box-shadow:
    0 9px 20px color-mix(in srgb, var(--color-accent) 22%, transparent);
  font: inherit;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  transition:
    transform 140ms ease,
    box-shadow 140ms ease,
    filter 140ms ease;
}

button:hover {
  box-shadow: 0 12px 24px color-mix(in srgb, var(--color-text) 20%, transparent);
  filter: brightness(1.03);
  transform: translateY(-1px);
}

.error {
  padding: 12px 14px;
  border: 1px solid color-mix(in srgb, var(--color-danger) 28%, transparent);
  border-radius: 14px;
  color: var(--color-danger);
  background: color-mix(in srgb, var(--color-danger) 9%, transparent);
  font-size: 0.93rem;
  line-height: 1.45;
}

.hint {
  color: var(--color-muted);
  font-size: 0.8rem;
  line-height: 1.5;
}

@media (max-width: 560px) {
  body {
    padding: clamp(24px, 10vh, 56px) 16px 16px;
  }

  .card {
    padding: 18px;
    border-radius: 18px;
  }

  h1 {
    font-size: 2.2rem;
  }
}