@font-face {
  font-family: 'Inter';
  src: url('/fonts/inter-latin-wght-normal.woff2') format('woff2');
  font-weight: 300 700;
  font-display: swap;
}

:root {
  --color-background: #FAFAF9;
  --color-foreground: #0C0A09;
  --color-card: #FFFFFF;
  --color-primary: #1C1917;
  --color-on-primary: #FFFFFF;
  --color-accent: #A16207;
  --color-muted-foreground: #57534E;
  --color-border: #D6D3D1;
  --color-input-border: #78716C;
  --color-ring: #1C1917;
  --color-destructive: #DC2626;

  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 32px;
  --space-5: 48px;
  --space-6: 64px;
  --space-7: 96px;
  --transition: 200ms ease;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-background: #0C0A09;
    --color-foreground: #FAFAF9;
    --color-card: #1C1917;
    --color-primary: #FAFAF9;
    --color-on-primary: #0C0A09;
    --color-accent: #CA8A04;
    --color-muted-foreground: #A8A29E;
    --color-border: #44403C;
    --color-ring: #CA8A04;
    --color-destructive: #F87171;
  }
}

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

body {
  margin: 0;
  min-height: 100vh;
  background: var(--color-background);
  color: var(--color-foreground);
  font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
  font-size: 1rem;
  line-height: 1.5;
}

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

.wordmark {
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--color-foreground);
  text-decoration: none;
}
.wordmark::after { content: '.'; color: var(--color-accent); }

button {
  min-height: 44px;
  padding: 0 var(--space-3);
  border: 1px solid var(--color-primary);
  border-radius: 0;
  background: var(--color-primary);
  color: var(--color-on-primary);
  font: inherit;
  font-weight: 500;
  cursor: pointer;
  transition: background-color var(--transition), color var(--transition), opacity var(--transition);
}
button:hover { background: transparent; color: var(--color-foreground); }
button:disabled { opacity: 0.6; cursor: wait; }

/* Landing */
.landing {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  align-content: center;
  min-height: 100vh;
  max-width: 1100px;
  margin: 0 auto;
  padding: var(--space-5) var(--space-2);
}
.hero h1 {
  margin: var(--space-3) 0 var(--space-2);
  font-size: clamp(2.5rem, 8vw, 4.5rem);
  font-weight: 600;
  line-height: 1.05;
  letter-spacing: -0.02em;
}
.hero p {
  margin: 0;
  max-width: 28ch;
  color: var(--color-muted-foreground);
  font-size: 1.125rem;
}

.login { display: grid; gap: var(--space-3); max-width: 360px; width: 100%; }
.field { display: grid; gap: var(--space-1); }
.field label { font-size: 0.875rem; font-weight: 500; }
.field input {
  min-height: 44px;
  padding: 0 var(--space-2);
  border: 1px solid var(--color-input-border);
  border-radius: 0;
  background: var(--color-card);
  color: var(--color-foreground);
  font: inherit;
  transition: border-color var(--transition);
}
.field input:hover { border-color: var(--color-foreground); }
.error {
  min-height: 1.5em;
  margin: 0;
  color: var(--color-destructive);
  font-size: 0.875rem;
}

@media (min-width: 768px) {
  .landing { grid-template-columns: 1fr 360px; gap: var(--space-7); align-items: center; padding: var(--space-5) var(--space-4); }
}

/* Welcome */
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  max-width: 1100px;
  margin: 0 auto;
  padding: var(--space-3) var(--space-2);
  border-bottom: 1px solid var(--color-border);
}
.welcome {
  max-width: 1100px;
  margin: 0 auto;
  padding: var(--space-6) var(--space-2) var(--space-7);
}
.welcome h1 {
  margin: 0 0 var(--space-5);
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 600;
  letter-spacing: -0.02em;
}
.cards { display: grid; grid-template-columns: 1fr; gap: var(--space-3); }
.card {
  padding: var(--space-4);
  border: 1px solid var(--color-border);
  background: var(--color-card);
}
.card h2 { margin: 0 0 var(--space-1); font-size: 1.125rem; font-weight: 600; }
.card p { margin: 0; color: var(--color-muted-foreground); }

@media (min-width: 768px) {
  .nav, .welcome { padding-left: var(--space-4); padding-right: var(--space-4); }
  .cards { grid-template-columns: repeat(3, 1fr); }
}

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