/* ==========================================================================
   EMERIVO DESIGN SYSTEM
   Tokens + base reset + typography. Every page inherits from this file.
   ========================================================================== */

:root {
  /* ---- Brand color tokens ---- */
  --navy-950: #0E0C33;
  --navy-900: #14123F;
  --navy-800: #1A1750;
  --navy-700: #262062;
  --navy-600: #34307C;
  --navy-500: #4A4499;

  --gold-600: #B87B27;
  --gold-500: #D99A3F;
  --gold-400: #E6B466;
  --gold-100: #FBEEDC;

  --paper: #FFFFFF;
  --gray-25: #FBFBFD;
  --gray-50: #F6F6FA;
  --gray-100: #EEEDF5;
  --gray-200: #E2E0EF;
  --gray-300: #CBC8E0;
  --gray-400: #9C98BE;
  --gray-500: #726E96;
  --gray-600: #55507A;
  --gray-700: #423E63;

  --text-primary: var(--navy-900);
  --text-secondary: #4B4870;
  --text-muted: #726E96;
  --text-on-dark: #FFFFFF;
  --text-on-dark-muted: #B9B6DA;

  --border-subtle: var(--gray-200);
  --border-strong: var(--gray-300);

  --success: #1C7C4C;
  --error: #C43D3D;

  /* ---- Typography ---- */
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-display: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

  /* Fluid type scale */
  --fs-display: clamp(2.6rem, 2rem + 2.6vw, 4.6rem);
  --fs-h1: clamp(2.2rem, 1.8rem + 1.8vw, 3.4rem);
  --fs-h2: clamp(1.7rem, 1.5rem + 1vw, 2.4rem);
  --fs-h3: clamp(1.3rem, 1.2rem + 0.5vw, 1.6rem);
  --fs-h4: 1.15rem;
  --fs-lead: clamp(1.1rem, 1rem + 0.4vw, 1.35rem);
  --fs-body: 1.0625rem;
  --fs-small: 0.9rem;
  --fs-micro: 0.78rem;

  --lh-tight: 1.12;
  --lh-snug: 1.3;
  --lh-normal: 1.6;

  /* ---- Spacing scale ---- */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 2.5rem;
  --space-8: 3.5rem;
  --space-9: 5rem;
  --space-10: 7rem;
  --space-11: 9rem;

  /* ---- Layout ---- */
  --container-max: 1240px;
  --container-narrow: 820px;
  --container-pad: clamp(1.25rem, 4vw, 3rem);

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-full: 999px;

  --shadow-sm: 0 1px 2px rgba(20, 18, 63, 0.06);
  --shadow-md: 0 8px 24px rgba(20, 18, 63, 0.08);
  --shadow-lg: 0 24px 64px rgba(20, 18, 63, 0.14);

  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --dur-fast: 160ms;
  --dur-med: 320ms;
}

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

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: var(--lh-normal);
  color: var(--text-primary);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img, svg { max-width: 100%; display: block; }

h1, h2, h3, h4, h5 {
  font-family: var(--font-display);
  color: var(--text-primary);
  font-weight: 700;
  line-height: var(--lh-tight);
  letter-spacing: -0.02em;
  margin: 0 0 var(--space-4);
}
h1 { font-size: var(--fs-h1); }
h2 { font-size: var(--fs-h2); }
h3 { font-size: var(--fs-h3); }
h4 { font-size: var(--fs-h4); }

p { margin: 0 0 var(--space-4); color: var(--text-secondary); }
p.lead { font-size: var(--fs-lead); line-height: var(--lh-snug); color: var(--text-secondary); }

a { color: inherit; text-decoration: none; }

ul, ol { margin: 0; padding: 0; list-style: none; }

button { font-family: inherit; cursor: pointer; }

::selection { background: var(--gold-100); color: var(--navy-900); }

:focus-visible {
  outline: 2px solid var(--gold-500);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---- Layout primitives ---- */
.container {
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}
.container-narrow {
  max-width: var(--container-narrow);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

.section { padding-block: var(--space-10); }
.section-tight { padding-block: var(--space-8); }
@media (max-width: 720px) {
  .section { padding-block: var(--space-9); }
  .section-tight { padding-block: var(--space-7); }
}

.section-dark {
  background: var(--navy-900);
  color: var(--text-on-dark);
}

/* ---- Dark-surface text/button contrast ----
   Any container that sits on a dark/navy background should carry
   either .section-dark or the lighter-weight .on-dark utility class.
   All dark-surface contrast rules are defined ONCE here so every
   button, heading and label stays legible wherever it's reused. */
.section-dark h1, .section-dark h2, .section-dark h3, .section-dark h4,
.on-dark h1, .on-dark h2, .on-dark h3, .on-dark h4 { color: var(--text-on-dark); }
.section-dark p, .on-dark p { color: var(--text-on-dark-muted); }
.section-dark .lead, .on-dark .lead { color: var(--text-on-dark-muted); }

.section-tint { background: var(--gray-50); }

.grid { display: grid; gap: var(--space-6); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 980px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}

.stack { display: flex; flex-direction: column; }
.cluster { display: flex; align-items: center; flex-wrap: wrap; }

/* ---- Eyebrow / kicker ---- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--fs-micro);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gold-600);
  margin-bottom: var(--space-4);
}
.section-dark .eyebrow, .on-dark .eyebrow { color: var(--gold-400); }
.eyebrow::before {
  content: "";
  width: 22px;
  height: 2px;
  background: var(--gold-500);
  display: inline-block;
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.9rem 1.6rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.98rem;
  border: 1px solid transparent;
  transition: background var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease), transform var(--dur-fast) var(--ease);
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }

.btn-primary {
  background: var(--gold-500);
  color: var(--navy-950);
}
.btn-primary:hover { background: var(--gold-600); }

.btn-secondary {
  background: transparent;
  color: var(--navy-900);
  border-color: var(--border-strong);
}
.btn-secondary:hover { border-color: var(--navy-900); background: var(--gray-50); }

.section-dark .btn-secondary, .on-dark .btn-secondary {
  color: var(--text-on-dark);
  border-color: rgba(255,255,255,0.4);
}
.section-dark .btn-secondary:hover, .on-dark .btn-secondary:hover { border-color: #fff; background: rgba(255,255,255,0.08); }

.btn-ghost {
  background: transparent;
  color: var(--navy-900);
  padding-inline: 0.25rem;
  border-bottom: 1px solid var(--border-strong);
  border-radius: 0;
}
.btn-ghost:hover { border-color: var(--navy-900); }
.section-dark .btn-ghost, .on-dark .btn-ghost { color: var(--text-on-dark); border-color: rgba(255,255,255,0.3); }

.btn-sm { padding: 0.6rem 1.1rem; font-size: 0.88rem; }
.btn-block { width: 100%; }

/* ---- Cards ---- */
.card {
  background: var(--paper);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: var(--space-6);
  transition: box-shadow var(--dur-med) var(--ease), transform var(--dur-med) var(--ease), border-color var(--dur-med) var(--ease);
}
.card-hover:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
  border-color: var(--border-strong);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.3rem 0.75rem;
  border-radius: var(--radius-full);
  font-size: var(--fs-micro);
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  background: var(--gray-100);
  color: var(--navy-800);
}
.badge-gold { background: var(--gold-100); color: var(--gold-600); }
.badge-outline { background: transparent; border: 1px solid var(--border-strong); color: var(--text-secondary); }
.badge-dark { background: rgba(255,255,255,0.1); color: #fff; }

/* ---- Reveal-on-scroll utility ---- */
[data-reveal] { opacity: 0; transform: translateY(18px); transition: opacity 700ms var(--ease), transform 700ms var(--ease); }
[data-reveal].is-visible { opacity: 1; transform: none; }

/* ---- Divider ---- */
.rule { height: 1px; background: var(--border-subtle); border: none; margin: var(--space-8) 0; }
.section-dark .rule, .on-dark .rule { background: rgba(255,255,255,0.14); }

/* ---- Skip link ---- */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--navy-900);
  color: #fff;
  padding: 0.75rem 1.25rem;
  z-index: 200;
  border-radius: 0 0 8px 0;
}
.skip-link:focus { left: 0; }

.text-accent { color: var(--gold-400); }
.text-center { text-align: center; }
.mx-auto { margin-inline: auto; }
.mt-0 { margin-top: 0; }
.visually-hidden {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}