:root {
  --ink: #1A2E27;
  --moss: #3E6650;
  --moss-dark: #2C4B3C;
  --mist: #C9D6D2;
  --brass: #B8863B;
  --brass-dark: #9C6F2C;
  --paper: #F7F5EF;
  --paper-dim: #EFEBE1;
  --text: #21302A;
  --text-muted: #62716A;
  --error: #B4432F;
  --error-bg: #FBEBE7;

  --font-display: "Fraunces", Georgia, serif;
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--text);
  background: var(--paper);
}

.login-screen {
  min-height: 100vh;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
}

/* ---------- Left: hero ---------- */

.login-hero {
  position: relative;
  overflow: hidden;
  background: var(--ink);
  min-height: 100vh;
}

.login-hero__ridges {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}

.login-hero__content {
  position: relative;
  z-index: 1;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 4rem 4.5rem;
  max-width: 30rem;
}

.login-hero__mark {
  display: block;
  margin-bottom: 1.75rem;
  filter: brightness(0) invert(1);
  opacity: 0.92;
}

.login-hero__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 2.75rem;
  letter-spacing: 0.01em;
  color: var(--paper);
  margin: 0 0 0.9rem;
  line-height: 1.05;
}

.login-hero__tagline {
  font-size: 1.0625rem;
  line-height: 1.55;
  color: var(--mist);
  margin: 0;
  max-width: 24rem;
}

/* ---------- Right: form panel ---------- */

.login-panel {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--paper);
  padding: 3rem 2.5rem;
}

.login-panel__inner {
  width: 100%;
  max-width: 24rem;
}

.login-panel__header h2 {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 1.75rem;
  color: var(--ink);
  margin: 0 0 0.4rem;
}

.login-panel__header p {
  font-size: 0.9375rem;
  color: var(--text-muted);
  margin: 0 0 2rem;
}

.alert {
  padding: 0.75rem 1rem;
  border-radius: 6px;
  font-size: 0.875rem;
  margin-bottom: 1.5rem;
}

.alert-error {
  background: var(--error-bg);
  color: var(--error);
  border: 1px solid rgba(180, 67, 47, 0.25);
}

.login-form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-group label {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text);
}

.form-group input {
  font-family: var(--font-body);
  font-size: 0.9375rem;
  padding: 0.7rem 0.85rem;
  border: 1px solid #D8D3C6;
  border-radius: 6px;
  background: #fff;
  color: var(--text);
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
  width: 100%;
}

.form-group input::placeholder {
  color: #9CA39B;
}

.form-group input:focus {
  border-color: var(--moss);
  box-shadow: 0 0 0 3px rgba(62, 102, 80, 0.15);
}

.password-field {
  position: relative;
  display: flex;
  align-items: center;
}

.password-field input {
  padding-right: 2.6rem;
}

.password-toggle {
  position: absolute;
  right: 0.5rem;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.4rem;
  display: flex;
  align-items: center;
  color: var(--text-muted);
  border-radius: 4px;
}

.password-toggle:hover {
  color: var(--text);
}

.password-toggle:focus-visible {
  outline: 2px solid var(--moss);
  outline-offset: 2px;
}

.btn {
  font-family: var(--font-body);
  font-size: 0.9375rem;
  font-weight: 600;
  padding: 0.8rem 1rem;
  border-radius: 6px;
  border: none;
  cursor: pointer;
  transition: background-color 0.15s ease, transform 0.05s ease;
  margin-top: 0.35rem;
}

.btn-primary {
  background: var(--moss-dark);
  color: var(--paper);
}

.btn-primary:hover {
  background: var(--ink);
}

.btn-primary:active {
  transform: translateY(1px);
}

.btn-primary:focus-visible {
  outline: 2px solid var(--brass);
  outline-offset: 2px;
}

.login-panel__footer {
  margin-top: 2.5rem;
}

.login-panel__footer p {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin: 0;
}

/* ---------- Responsive ---------- */

@media (max-width: 860px) {
  .login-screen {
    grid-template-columns: 1fr;
  }

  .login-hero {
    min-height: 15rem;
  }

  .login-hero__content {
    padding: 2.5rem 1.75rem;
    justify-content: flex-end;
    padding-bottom: 2.25rem;
  }

  .login-hero__title {
    font-size: 2.1rem;
  }

  .login-panel {
    padding: 2.25rem 1.75rem 3rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    transition: none !important;
  }
}