/* ============================================
   IonRidge — Style v2
   Art Direction: Quantitative / Authoritative / Precise
   Palette: Deep navy + warm gold accent
   ============================================ */

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

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  scroll-padding-top: 5rem;
}

/* --- Design Tokens --- */
:root, [data-theme="light"] {
  --font-display: 'DM Serif Display', Georgia, serif;
  --font-body: 'Switzer', 'Helvetica Neue', sans-serif;

  --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-hero: clamp(2.5rem,   1rem    + 4vw,    4.5rem);

  --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-bg:              #f5f6f8;
  --color-surface:         #ffffff;
  --color-surface-alt:     #eef0f4;
  --color-divider:         #d8dce3;
  --color-border:          #c8cdd6;

  --color-text:            #0f2a3d;
  --color-text-muted:      #5a6a7a;
  --color-text-faint:      #9aa5b2;
  --color-text-inverse:    #f5f6f8;

  --color-accent:          #c9a96e;
  --color-accent-hover:    #b8944e;
  --color-accent-active:   #a07e3a;
  --color-accent-glow:     rgba(201, 169, 110, 0.15);

  --color-grid:            #d8dce3;
  --color-navy:            #0f2a3d;
  --color-navy-hover:      #1a3f58;

  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;

  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);

  --shadow-sm: 0 1px 3px rgba(15, 42, 61, 0.06);
  --shadow-md: 0 4px 16px rgba(15, 42, 61, 0.08);
  --shadow-lg: 0 12px 40px rgba(15, 42, 61, 0.12);

  --content-default: 960px;
  --content-wide: 1120px;
}

[data-theme="dark"] {
  --color-bg:              #0a141c;
  --color-surface:         #0f1f2d;
  --color-surface-alt:     #132636;
  --color-divider:         #1a3248;
  --color-border:          #243e56;

  --color-text:            #d4dbe3;
  --color-text-muted:      #8a9aab;
  --color-text-faint:      #4a6070;
  --color-text-inverse:    #0a141c;

  --color-accent:          #d4b87a;
  --color-accent-hover:    #e0c88e;
  --color-accent-active:   #c9a96e;
  --color-accent-glow:     rgba(212, 184, 122, 0.1);

  --color-grid:            #1a3248;
  --color-navy:            #d4dbe3;
  --color-navy-hover:      #ffffff;

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.5);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg:              #0a141c;
    --color-surface:         #0f1f2d;
    --color-surface-alt:     #132636;
    --color-divider:         #1a3248;
    --color-border:          #243e56;
    --color-text:            #d4dbe3;
    --color-text-muted:      #8a9aab;
    --color-text-faint:      #4a6070;
    --color-text-inverse:    #0a141c;
    --color-accent:          #d4b87a;
    --color-accent-hover:    #e0c88e;
    --color-accent-active:   #c9a96e;
    --color-accent-glow:     rgba(212, 184, 122, 0.1);
    --color-grid:            #1a3248;
    --color-navy:            #d4dbe3;
    --color-navy-hover:      #ffffff;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.5);
  }
}

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

img, picture, video, canvas, svg { display: block; max-width: 100%; height: auto; }
input, button, textarea, select { font: inherit; color: inherit; }
h1, h2, h3, h4, h5, h6 { text-wrap: balance; line-height: 1.15; }
p, li, figcaption { text-wrap: pretty; max-width: 72ch; }
button { cursor: pointer; background: none; border: none; }

::selection {
  background: rgba(201, 169, 110, 0.25);
  color: var(--color-text);
}

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

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  #heroCanvas { display: none; }
}

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

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

.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;
}

/* --- Header --- */
.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--color-bg) 90%, transparent);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1),
              box-shadow 0.3s cubic-bezier(0.16, 1, 0.3, 1),
              border-color 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.header--scrolled {
  border-bottom-color: var(--color-divider);
  box-shadow: var(--shadow-sm);
}

.header--hidden { transform: translateY(-100%); }

.header__inner {
  max-width: var(--content-wide);
  margin: 0 auto;
  padding: var(--space-4) var(--space-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
}

.logo__img {
  display: block;
  height: 28px;
  max-height: 28px;
  width: auto;
  max-width: 120px;
  object-fit: contain;
}

.header__nav {
  display: flex;
  gap: var(--space-8);
}

.nav-link {
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--color-text-muted);
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1.5px;
  background: var(--color-accent);
  transition: width var(--transition-interactive);
}

.nav-link:hover { color: var(--color-text); }
.nav-link:hover::after { width: 100%; }

.theme-toggle {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
}

.theme-toggle:hover {
  color: var(--color-text);
  background: var(--color-surface-alt);
}

/* --- Hero --- */
.hero {
  position: relative;
  min-height: 85vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

#heroCanvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  opacity: 0.6;
}

.hero__content {
  position: relative;
  z-index: 2;
  max-width: var(--content-wide);
  margin: 0 auto;
  padding: var(--space-20) var(--space-6);
  width: 100%;
}

.hero__eyebrow {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-6);
}

.hero__title {
  font-family: var(--font-display);
  font-size: var(--text-hero);
  font-weight: 400;
  line-height: 1.08;
  color: var(--color-text);
  margin-bottom: var(--space-6);
  max-width: 14ch;
}

.hero__subtitle {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.7;
  max-width: 56ch;
  margin-bottom: var(--space-12);
}

.hero__stats {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  padding-top: var(--space-8);
  border-top: 1px solid var(--color-divider);
}

.hero__stat-label {
  display: block;
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-faint);
  margin-bottom: var(--space-1);
}

.hero__stat-value {
  display: block;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
}

.hero__stat-divider {
  width: 1px;
  height: 36px;
  background: var(--color-divider);
}

/* --- Section Divider --- */
.section-divider {
  max-width: var(--content-wide);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.section-divider__line {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-accent) 50%, transparent);
  opacity: 0.3;
}

/* --- Sections --- */
.section {
  padding: clamp(var(--space-16), 8vw, var(--space-24)) var(--space-6);
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

.section.visible {
  opacity: 1;
  transform: translateY(0);
}

.section--alt {
  background: var(--color-surface-alt);
}

.section__inner {
  max-width: var(--content-default);
  margin: 0 auto;
}

.section__label {
  display: block;
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-3);
}

.section__title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 400;
  color: var(--color-text);
  margin-bottom: var(--space-10);
}

.section__content p {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.7;
}

.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-10);
}

/* --- Pillars / Approach --- */
.pillars {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
}

.pillar {
  padding: var(--space-8);
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  position: relative;
  overflow: hidden;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.5s cubic-bezier(0.16, 1, 0.3, 1),
              box-shadow 0.3s cubic-bezier(0.16, 1, 0.3, 1),
              border-color 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.pillar.visible {
  opacity: 1;
  transform: translateY(0);
}

.pillar:nth-child(2) { transition-delay: 0.08s; }
.pillar:nth-child(3) { transition-delay: 0.16s; }
.pillar:nth-child(4) { transition-delay: 0.24s; }

.pillar:hover {
  box-shadow: var(--shadow-lg);
  border-color: var(--color-accent);
}

.pillar::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-accent), transparent);
  opacity: 0;
  transition: opacity 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.pillar:hover::before {
  opacity: 1;
}

.pillar__icon {
  width: 48px;
  height: 48px;
  margin-bottom: var(--space-5);
}

.pillar__icon svg {
  width: 48px;
  height: 48px;
}

.pillar__number {
  display: block;
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-accent);
  letter-spacing: 0.05em;
  margin-bottom: var(--space-3);
}

.pillar__title {
  font-family: var(--font-body);
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-3);
}

.pillar__text {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* --- Footer --- */
.footer {
  border-top: 1px solid var(--color-divider);
  padding: var(--space-8) var(--space-6);
}

.footer__inner {
  max-width: var(--content-wide);
  margin: 0 auto;
  text-align: center;
}

.footer__copy {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  letter-spacing: 0.02em;
}

/* --- Responsive --- */
@media (max-width: 768px) {
  .hero {
    min-height: 70vh;
  }

  .hero__stats {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-4);
  }

  .hero__stat-divider {
    width: 40px;
    height: 1px;
  }

  .two-col {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }

  .pillars {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }

  .header__nav {
    gap: var(--space-5);
  }
}