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

html { color-scheme: dark; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  min-height: 100dvh;
  background: var(--color-bg-page);
  color: var(--color-text-primary);
  font: var(--type-body);
  -webkit-font-smoothing: antialiased;
}

button, input { font: inherit; }
button { color: inherit; }

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

.login-shell {
  min-height: 100dvh;
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(390px, 0.75fr);
  background:
    linear-gradient(90deg, transparent 49.9%, var(--color-border-default) 50%, transparent 50.1%),
    radial-gradient(circle at 24% 36%, color-mix(in srgb, var(--color-accent-primary) 14%, transparent), transparent 25rem),
    var(--color-bg-page);
}

.login-intro {
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: clamp(28px, 5vw, 72px);
  position: relative;
  overflow: hidden;
}

.login-intro::after {
  content: "AIB";
  position: absolute;
  right: -0.08em;
  bottom: -0.22em;
  color: color-mix(in srgb, var(--color-text-primary) 3%, transparent);
  font: 800 clamp(180px, 28vw, 460px)/0.8 var(--font-sans);
  letter-spacing: -0.1em;
  pointer-events: none;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-3);
  width: max-content;
  color: inherit;
  text-decoration: none;
  position: relative;
  z-index: 1;
}
.brand img { display: block; }
.brand span { display: flex; flex-direction: column; gap: 2px; }
.brand strong { font: var(--type-title-small); letter-spacing: 0.04em; }
.brand small {
  color: var(--color-accent-primary-hover);
  font: var(--type-caption);
  letter-spacing: 0.12em;
}

.intro-copy { max-width: 720px; position: relative; z-index: 1; }
.eyebrow, .panel-index {
  margin: 0 0 var(--spacing-3);
  color: var(--color-accent-primary-hover);
  font: var(--type-mono-caption);
  letter-spacing: 0.16em;
}
.intro-copy h1 {
  margin: 0;
  font: 700 clamp(44px, 6vw, 84px)/1.03 var(--font-sans);
  letter-spacing: -0.055em;
}
.lede {
  max-width: 32em;
  margin: var(--spacing-5) 0 0;
  color: var(--color-text-secondary);
  font-size: 16px;
  line-height: 1.75;
}

.trust-line {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-5);
  color: var(--color-text-tertiary);
  font: var(--type-caption);
  position: relative;
  z-index: 1;
}
.trust-line span { display: inline-flex; align-items: center; gap: var(--spacing-2); }
.trust-line i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--color-feedback-success);
  box-shadow: 0 0 0 5px color-mix(in srgb, var(--color-feedback-success) 12%, transparent);
}

.login-panel {
  min-height: 100dvh;
  display: grid;
  place-items: center;
  padding: clamp(28px, 5vw, 72px);
  background: color-mix(in srgb, var(--color-bg-sidebar) 80%, transparent);
}
.panel-inner { width: min(100%, 420px); }
.panel-inner header { margin-bottom: var(--spacing-6); }
.panel-inner h2 { margin: 0; font: var(--type-display); letter-spacing: -0.025em; }
.panel-inner header > p:last-child {
  margin: var(--spacing-2) 0 0;
  color: var(--color-text-secondary);
}

form { display: grid; gap: var(--spacing-2); }
label { color: var(--color-text-secondary); font: var(--type-label); }
input {
  width: 100%;
  min-height: 50px;
  margin-bottom: var(--spacing-3);
  padding: 0 var(--spacing-3);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-md);
  background: var(--color-bg-card);
  color: var(--color-text-primary);
  transition: border-color 120ms ease, background 120ms ease;
}
input:hover { background: var(--color-bg-card-hover); }
input:focus { border-color: var(--color-focus); outline: 0; }
input::placeholder { color: var(--color-text-tertiary); }

.password-label { display: flex; align-items: center; justify-content: space-between; }
.text-button {
  border: 0;
  padding: 4px;
  background: transparent;
  color: var(--color-accent-primary-hover);
  cursor: pointer;
  font: var(--type-caption);
}
.text-button:hover { text-decoration: underline; }

.form-error {
  min-height: 21px;
  margin: 0 0 var(--spacing-2);
  color: var(--color-feedback-error);
  font: var(--type-label);
}
.submit-button {
  min-height: 52px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--spacing-4);
  border: 1px solid var(--color-accent-primary);
  border-radius: var(--radius-md);
  background: var(--color-accent-primary);
  color: var(--color-text-primary);
  cursor: pointer;
  font: var(--type-body-strong);
  transition: background 120ms ease, border-color 120ms ease, transform 120ms ease;
}
.submit-button:hover { background: var(--color-accent-primary-hover); border-color: var(--color-accent-primary-hover); color: var(--color-bg-page); }
.submit-button:active { transform: translateY(1px); }
.submit-button:disabled { cursor: wait; opacity: 0.7; }
.submit-button[data-pending="true"] span:last-child { animation: pulse 800ms ease-in-out infinite alternate; }

.panel-foot {
  margin: var(--spacing-5) 0 0;
  padding-top: var(--spacing-4);
  border-top: 1px solid var(--color-border-default);
  color: var(--color-text-tertiary);
  font: var(--type-caption);
}

@keyframes pulse { to { opacity: 0.3; transform: translateX(4px); } }

@media (max-width: 820px) {
  .login-shell { grid-template-columns: 1fr; background: var(--color-bg-page); }
  .login-intro { min-height: 42dvh; padding: var(--spacing-5) var(--spacing-4); }
  .intro-copy { margin: var(--spacing-7) 0; }
  .intro-copy h1 { font-size: clamp(38px, 12vw, 58px); }
  .lede { margin-top: var(--spacing-3); }
  .trust-line { gap: var(--spacing-3); }
  .trust-line span:not(:first-child) { display: none; }
  .login-panel { min-height: 58dvh; place-items: start center; padding: var(--spacing-6) var(--spacing-4); border-top: 1px solid var(--color-border-default); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}