/* =============================================================
   BASE — design tokens, reset, typography defaults
   ============================================================= */

:root {
  /* Type scale — fluid */
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.75vw, 1.5rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);
  --text-2xl: clamp(2rem, 1.2rem + 2.5vw, 3.5rem);
  --text-3xl: clamp(2.5rem, 1rem + 4vw, 5rem);
  --text-hero: clamp(3rem, 0.5rem + 7vw, 7.5rem);

  /* Spacing — 4px base */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Color — premium private-bank palette */
  --color-navy: #0a1628;          /* deep midnight */
  --color-navy-2: #11203a;        /* one step lighter */
  --color-navy-3: #1a2c48;        /* card surfaces on dark */
  --color-ivory: #f5f1e8;         /* warm cream */
  --color-ivory-2: #efe9dc;       /* offset cream */
  --color-paper: #faf7f0;         /* warmest white */
  --color-gold: #c9a961;          /* refined gold accent */
  --color-gold-hover: #d9bc78;
  --color-gold-deep: #a88847;
  --color-text: #11203a;          /* near-black with navy temperature */
  --color-text-muted: #4a5670;
  --color-text-faint: #8a93a8;
  --color-text-on-dark: #e7e1d4;
  --color-text-on-dark-muted: #a8a395;
  --color-divider: rgba(17, 32, 58, 0.12);
  --color-divider-on-dark: rgba(245, 241, 232, 0.12);
  --color-border: rgba(17, 32, 58, 0.18);

  /* Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-interactive: 200ms cubic-bezier(0.16, 1, 0.3, 1);

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(10, 22, 40, 0.06);
  --shadow-md: 0 4px 16px rgba(10, 22, 40, 0.08);
  --shadow-lg: 0 16px 48px rgba(10, 22, 40, 0.18);
  --shadow-gold: 0 8px 24px rgba(201, 169, 97, 0.28);

  /* Layout widths */
  --content-narrow: 680px;
  --content-default: 1040px;
  --content-wide: 1240px;

  /* Fonts */
  --font-display: 'Source Serif 4', 'Source Serif Pro', 'Iowan Old Style', Georgia, serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Helvetica Neue', sans-serif;
}

/* Reset */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  -moz-text-size-adjust: none;
  -webkit-text-size-adjust: none;
  text-size-adjust: none;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  scroll-padding-top: 88px;
}

body {
  min-height: 100dvh;
  line-height: 1.6;
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background: var(--color-paper);
}

img, picture, video, canvas, svg {
  display: block;
  max-width: 100%;
  height: auto;
}

ul[role='list'], ol[role='list'] { list-style: none; }
input, button, textarea, select { font: inherit; color: inherit; }

h1, h2, h3, h4, h5, h6 {
  text-wrap: balance;
  line-height: 1.12;
  font-family: var(--font-display);
  font-weight: 500;
  letter-spacing: -0.015em;
}

p, li, figcaption {
  text-wrap: pretty;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-interactive);
}

::selection {
  background: var(--color-gold);
  color: var(--color-navy);
}

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

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

button {
  cursor: pointer;
  background: none;
  border: none;
  font-family: inherit;
}

a, button, [role='button'] {
  transition:
    color var(--transition-interactive),
    background var(--transition-interactive),
    border-color var(--transition-interactive),
    box-shadow var(--transition-interactive),
    transform var(--transition-interactive);
}

.skip-link {
  position: absolute;
  top: -40px;
  left: var(--space-4);
  background: var(--color-navy);
  color: var(--color-ivory);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  z-index: 100;
}
.skip-link:focus { top: var(--space-4); }

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}