/* ============================================================
   SDMS Login — Design Tokens
   ============================================================ */
:root {
  --ink-navy: #14336B;
  --ink-navy-deep: #0A1F4D;
  --paper: #F4F7FC;
  --paper-raised: #FFFFFF;
  --brass: #E2711D;
  --brass-light: #F5A15C;
  --clay: #C1392B;
  --charcoal: #1F2430;
  --charcoal-soft: #5B6272;
  --line: #E1E7F2;
  --line-on-navy: rgba(255, 255, 255, 0.16);

  --font-display: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'IBM Plex Mono', 'Courier New', monospace;

  --radius: 10px;
  --transition: 180ms ease;
}

@media (prefers-reduced-motion: reduce) {
  :root { --transition: 0ms; }
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
}

body {
  font-family: var(--font-body);
  color: var(--charcoal);
  background: var(--paper);
}

/* ============================================================
   Layout
   ============================================================ */
.page {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  min-height: 100vh;
}

@media (max-width: 900px) {
  .page {
    grid-template-columns: 1fr;
  }
}

/* ============================================================
   Branding panel
   ============================================================ */
.panel-brand {
  background: linear-gradient(160deg, var(--ink-navy) 0%, var(--ink-navy-deep) 100%);
  color: var(--paper);
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 56px;
  padding: 72px 64px;
  position: relative;
  overflow: hidden;
}

@media (max-width: 900px) {
  .panel-brand {
    padding: 40px 32px 32px;
    gap: 28px;
  }
}

.brand-copy__logo {
  width: 220px;
  height: auto;
  display: block;
  margin: 0 0 24px;
}

@media (max-width: 900px) {
  .brand-copy__logo {
    width: 168px;
    margin: 0 0 16px;
  }
}

.brand-copy__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(28px, 3.4vw, 40px);
  line-height: 1.15;
  margin: 0 0 18px;
}

.brand-copy__tagline {
  font-size: 15px;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.68);
  max-width: 34ch;
  margin: 0;
}

/* Ledger — signature element */
.ledger {
  max-width: 220px;
}

.ledger__caption {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.5);
  margin: 0 0 12px;
}

.ledger__scale {
  display: flex;
  flex-direction: column;
  border-left: 1px solid var(--line-on-navy);
  padding-left: 16px;
}

.ledger__tick {
  display: flex;
  align-items: center;
  height: 22px;
  position: relative;
}

.ledger__tick::before {
  content: "";
  position: absolute;
  left: -17px;
  width: 10px;
  height: 1px;
  background: var(--line-on-navy);
}

.ledger__value {
  font-family: var(--font-mono);
  font-size: 12px;
  color: rgba(255, 255, 255, 0.38);
}

.ledger__tick--peak {
  height: 34px;
}

.ledger__tick--peak::before {
  width: 16px;
  height: 2px;
  background: var(--brass);
}

.ledger__tick--peak .ledger__value {
  font-size: 20px;
  font-weight: 500;
  color: var(--brass-light);
}

@media (max-width: 900px) {
  .ledger { display: none; }
}

/* ============================================================
   Form panel
   ============================================================ */
.panel-form {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 48px 32px;
  gap: 24px;
}

.form-card {
  width: 100%;
  max-width: 380px;
  background: var(--paper-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 40px 36px;
}

@media (max-width: 480px) {
  .form-card { padding: 32px 24px; }
}

.form-card__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 26px;
  margin: 0 0 6px;
  color: var(--ink-navy);
}

.form-card__subtitle {
  font-size: 14px;
  color: var(--charcoal-soft);
  margin: 0 0 32px;
}

/* ============================================================
   Form fields
   ============================================================ */
.login-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.login-form[hidden] {
  display: none;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.field__label {
  font-size: 13px;
  font-weight: 500;
  color: var(--charcoal);
}

.field__input {
  font-family: var(--font-body);
  font-size: 15px;
  color: var(--charcoal);
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px 14px;
  width: 100%;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.field__input:focus-visible {
  outline: none;
  border-color: var(--brass);
  box-shadow: 0 0 0 3px rgba(226, 113, 29, 0.22);
}

.field__input-wrap {
  position: relative;
  display: flex;
  align-items: center;
}

.field__input-wrap .field__input {
  padding-right: 64px;
}

.field__toggle {
  position: absolute;
  right: 6px;
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 500;
  color: var(--charcoal-soft);
  background: transparent;
  border: none;
  padding: 8px 10px;
  cursor: pointer;
  border-radius: 6px;
  transition: color var(--transition), background var(--transition);
}

.field__toggle:hover {
  color: var(--ink-navy);
  background: var(--line);
}

.field__toggle:focus-visible {
  outline: 2px solid var(--brass);
  outline-offset: 1px;
}

/* ============================================================
   Submit + states
   ============================================================ */
.submit-btn {
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 500;
  color: var(--paper);
  background: var(--ink-navy);
  border: none;
  border-radius: 8px;
  padding: 13px 20px;
  cursor: pointer;
  margin-top: 4px;
  transition: background var(--transition), opacity var(--transition);
}

.submit-btn:hover { background: var(--ink-navy-deep); }

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

.submit-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.form-error {
  font-size: 13px;
  color: var(--clay);
  background: rgba(193, 57, 43, 0.08);
  border: 1px solid rgba(193, 57, 43, 0.2);
  border-radius: 8px;
  padding: 11px 13px;
  line-height: 1.5;
}

.help-text {
  font-size: 13px;
  color: var(--charcoal-soft);
  text-align: center;
  margin: 4px 0 0;
}

.footer-note {
  font-size: 12px;
  color: var(--charcoal-soft);
  text-align: center;
  margin: 0;
}