body {
  margin: 0;
  height: 100dvh;
  background-color: var(--color-sub-bg);
  display: flex;
  flex-direction: column;
  font-family: var(--font-sans);
  color: var(--color-ink);
  padding: 1.5rem;
}

main.loginPage {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

footer {
  margin: 0;
  text-align: center;
}

/* ── Login Window ────────────────────────────── */
#app {
  width: min(45rem, 100%);
  max-height: 100%;
  min-height: 35rem;
  background: var(--color-paper);
  border: 1px solid var(--color-line);
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-areas: "sidebar loginSignup";
  box-shadow:
    0 1px 3px rgba(0, 0, 0, 0.08),
    0 6px 24px rgba(0, 0, 0, 0.08);
}

/* ── Left Login Panel ─────────────────── */
#loginFlavorText {
  grid-area: sidebar;
  background-color: var(--color-sub-bg);
  border-right: 1px solid var(--color-line);
  padding: 2.5rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 1.5rem;
}

#loginFlavorText .logo {
  font-family: var(--font-mono);
  font-size: xx-large;
  font-weight: 500;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--color-mute);
}

.tagline p {
  margin: 0;
}

.tagline p:first-child {
  font-family: var(--font-sans);
  font-size: 1.5rem;
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.4px;
  color: var(--color-ink);
}

.tagline p:last-child {
  margin-top: 1rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.6px;
  color: var(--color-mute);
}

/* ── Right Login Panel ──────────────────── */
.loginContainer {
  grid-area: loginSignup;
  padding: 2.5rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 0.875rem;
}

.mainForm {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.mainForm label {
  margin-top: 0.25rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.8px;
  text-transform: uppercase;
  color: var(--color-mute);
}

.mainForm input[type="text"],
.mainForm input[type="password"] {
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--color-ink);
  border-radius: 0;
  background: var(--color-input-bg);
  font-family: var(--font-sans);
  font-size: 0.875rem;
  color: var(--color-ink);
  outline: none;
  transition:
    border-color 150ms ease,
    box-shadow 150ms ease;
}

.mainForm input::placeholder {
  color: var(--color-mute);
}

.mainForm input:focus-visible {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 2px var(--color-accent-soft);
}

.mainForm .formSubmit {
  margin-top: 0.5rem;
  padding: 0.75rem 1.25rem;
  border: none;
  background: var(--color-accent);
  color: #ffffff;
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.2px;
  cursor: pointer;
  transition:
    filter 150ms ease,
    transform 80ms ease;
}

.mainForm .formSubmit:hover {
  filter: brightness(1.05);
}

.mainForm .formSubmit:active {
  transform: translateY(1px);
}

.mainForm .formSubmit:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.loginContainer > button {
  margin-top: 0.25rem;
  padding: 0.25rem 0;
  border: none;
  background: transparent;
  color: var(--color-mute);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.4px;
  text-align: left;
  cursor: pointer;
  transition: color 150ms ease;
}

.loginContainer > button:hover {
  color: var(--color-accent);
}

.loginContainer > button:focus-visible {
  outline: 1px dashed var(--color-accent);
  outline-offset: 2px;
  color: var(--color-accent);
}

#errorMessage {
  margin: 0;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--color-error);
  background: var(--color-error-soft);
  color: var(--color-error);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.4px;
}

@media (max-width: 40em) {
  body {
    padding: 0;
  }

  #app {
    width: 100%;
    min-height: 0;
    max-height: 100%;
    grid-template-columns: 1fr;
    grid-template-rows: auto 1fr;
    grid-template-areas:
      "sidebar"
      "loginSignup";
    border: none;
    box-shadow: none;
    overflow: hidden;
  }

  #loginFlavorText {
    border-right: none;
    border-bottom: 1px solid var(--color-line);
    padding: 1.75rem;
    gap: 1rem;
  }

  .loginContainer {
    padding: 1.75rem;
    overflow: auto;
  }

  footer {
    padding: 0.5rem 1rem;
    font-size: 0.75rem;
  }
}