/* ============================================================
   RIGEL AI ENTERPRISE — Design System & Stylesheet
   ============================================================ */

/* ── Custom Properties ─────────────────────────────────────── */
:root {
  /* Colors */
  --color-bg:          #050B18;
  --color-surface:     #0D1526;
  --color-surface-2:   #132038;
  --color-border:      rgba(255,255,255,0.08);
  --color-border-hover:rgba(255,255,255,0.18);

  --color-primary:     #4F8EF7;
  --color-primary-dark:#3A72D8;
  --color-accent:      #00D4AA;
  --color-accent-dark: #00A882;

  --color-text:        #E8EDF5;
  --color-text-muted:  #7A8BA8;
  --color-text-subtle: #4A5A72;

  --color-white:       #FFFFFF;
  --color-error:       #F56565;
  --color-success:     #48BB78;

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  /* Scale */
  --text-xs:   0.75rem;
  --text-sm:   0.875rem;
  --text-base: 1rem;
  --text-lg:   1.125rem;
  --text-xl:   1.25rem;
  --text-2xl:  1.5rem;
  --text-3xl:  1.875rem;
  --text-4xl:  2.25rem;
  --text-5xl:  3rem;
  --text-6xl:  3.75rem;

  /* Spacing */
  --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;

  /* Layout */
  --container-max: 1200px;
  --container-wide: 1400px;
  --container-narrow: 800px;
  --gutter: 1.5rem;

  /* Radius */
  --radius-sm:  0.375rem;
  --radius-md:  0.75rem;
  --radius-lg:  1rem;
  --radius-xl:  1.5rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm:  0 1px 3px rgba(0,0,0,0.4);
  --shadow-md:  0 4px 16px rgba(0,0,0,0.5);
  --shadow-lg:  0 12px 40px rgba(0,0,0,0.6);
  --shadow-glow: 0 0 40px rgba(79,142,247,0.15);
  --shadow-glow-accent: 0 0 40px rgba(0,212,170,0.12);

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-base: 0.25s ease;
  --transition-slow: 0.4s ease;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  font-size: var(--text-base);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; border: none; background: none; font: inherit; }
ul, ol { list-style: none; }
input, textarea, select { font: inherit; }

/* ── Typography ─────────────────────────────────────────────── */
h1, h2, h3, h4, h5, h6 {
  line-height: 1.15;
  font-weight: 700;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.25rem, 5vw, var(--text-6xl)); }
h2 { font-size: clamp(1.75rem, 3.5vw, var(--text-4xl)); }
h3 { font-size: clamp(1.25rem, 2.5vw, var(--text-2xl)); }
h4 { font-size: var(--text-xl); }
h5 { font-size: var(--text-lg); }

p { line-height: 1.7; }

.text-gradient {
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.text-muted  { color: var(--color-text-muted); }
.text-subtle { color: var(--color-text-subtle); }
.text-accent { color: var(--color-accent); }
.text-primary { color: var(--color-primary); }

/* ── Layout ─────────────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.container--wide   { max-width: var(--container-wide); }
.container--narrow { max-width: var(--container-narrow); }

.section {
  padding-block: var(--space-24);
}
.section--sm { padding-block: var(--space-16); }
.section--lg { padding-block: var(--space-32); }

/* ── Navigation ─────────────────────────────────────────────── */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: var(--space-4) 0;
  transition: background var(--transition-base), box-shadow var(--transition-base);
}

.nav.scrolled {
  background: rgba(5,11,24,0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 1px 0 var(--color-border);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-8);
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-weight: 700;
  font-size: var(--text-lg);
  color: var(--color-white);
  flex-shrink: 0;
}

.nav__logo-icon {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.nav__link {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
  position: relative;
}

.nav__link:hover,
.nav__link.active {
  color: var(--color-white);
}

.nav__link.active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--color-primary);
  border-radius: var(--radius-full);
}

.nav__actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-2);
}

.nav__toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: var(--radius-full);
  transition: var(--transition-base);
}

/* Mobile nav */
.nav__mobile {
  display: none;
  position: fixed;
  top: 64px;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-surface);
  z-index: 99;
  padding: var(--space-8) var(--space-6);
  flex-direction: column;
  gap: var(--space-4);
  overflow-y: auto;
}

.nav__mobile.open {
  display: flex;
}

.nav__mobile-link {
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--color-text-muted);
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-border);
  transition: color var(--transition-fast);
}

.nav__mobile-link:hover { color: var(--color-white); }

/* ── Buttons ────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.75rem 1.5rem;
  font-size: var(--text-sm);
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
  white-space: nowrap;
  cursor: pointer;
  letter-spacing: 0.01em;
}

.btn--primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: var(--color-white);
  box-shadow: 0 4px 16px rgba(79,142,247,0.3);
}
.btn--primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(79,142,247,0.4);
}

.btn--accent {
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
  color: #050B18;
  font-weight: 700;
  box-shadow: 0 4px 16px rgba(0,212,170,0.25);
}
.btn--accent:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(0,212,170,0.35);
}

.btn--ghost {
  background: transparent;
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}
.btn--ghost:hover {
  color: var(--color-white);
  border-color: var(--color-border-hover);
  background: rgba(255,255,255,0.04);
}

.btn--outline {
  background: transparent;
  color: var(--color-primary);
  border: 1px solid var(--color-primary);
}
.btn--outline:hover {
  background: rgba(79,142,247,0.08);
}

.btn--lg {
  padding: 0.875rem 2rem;
  font-size: var(--text-base);
  border-radius: var(--radius-lg);
}

.btn--sm {
  padding: 0.5rem 1rem;
  font-size: var(--text-xs);
  border-radius: var(--radius-sm);
}

/* ── Cards ──────────────────────────────────────────────────── */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  transition: border-color var(--transition-base), box-shadow var(--transition-base), transform var(--transition-base);
}

.card:hover {
  border-color: var(--color-border-hover);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.card--featured {
  border-color: rgba(79,142,247,0.3);
  background: linear-gradient(135deg, rgba(79,142,247,0.06), rgba(0,212,170,0.04));
  box-shadow: var(--shadow-glow);
}

/* ── Grid Utilities ─────────────────────────────────────────── */
.grid { display: grid; }
.grid--2 { grid-template-columns: repeat(2, 1fr); gap: var(--space-6); }
.grid--3 { grid-template-columns: repeat(3, 1fr); gap: var(--space-6); }
.grid--4 { grid-template-columns: repeat(4, 1fr); gap: var(--space-6); }
.grid--auto { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: var(--space-6); }

/* ── Flex Utilities ─────────────────────────────────────────── */
.flex { display: flex; }
.flex--center { align-items: center; justify-content: center; }
.flex--between { align-items: center; justify-content: space-between; }
.flex--gap-2 { gap: var(--space-2); }
.flex--gap-3 { gap: var(--space-3); }
.flex--gap-4 { gap: var(--space-4); }

/* ── Section Labels ─────────────────────────────────────────── */
.label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
  background: rgba(0,212,170,0.1);
  border: 1px solid rgba(0,212,170,0.2);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-4);
}

.label--blue {
  color: var(--color-primary);
  background: rgba(79,142,247,0.1);
  border-color: rgba(79,142,247,0.2);
}

/* ── Section Headers ────────────────────────────────────────── */
.section-header {
  margin-bottom: var(--space-12);
  max-width: 640px;
}

.section-header--center {
  text-align: center;
  margin-inline: auto;
}

.section-header h2 {
  margin-bottom: var(--space-4);
}

.section-header p {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* ── Dividers ───────────────────────────────────────────────── */
.divider {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: var(--space-8) 0;
}

/* ── Badges ─────────────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
}

.badge--green {
  background: rgba(72,187,120,0.12);
  color: #48BB78;
  border: 1px solid rgba(72,187,120,0.2);
}

.badge--blue {
  background: rgba(79,142,247,0.12);
  color: var(--color-primary);
  border: 1px solid rgba(79,142,247,0.2);
}

/* ── Check List ─────────────────────────────────────────────── */
.checklist {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.checklist li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
}

.checklist li::before {
  content: '✓';
  display: flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  min-width: 20px;
  background: rgba(0,212,170,0.1);
  border: 1px solid rgba(0,212,170,0.25);
  border-radius: var(--radius-sm);
  color: var(--color-accent);
  font-size: 11px;
  font-weight: 700;
  margin-top: 1px;
}

/* ── Stats ──────────────────────────────────────────────────── */
.stat-card {
  text-align: center;
  padding: var(--space-8);
}

.stat-card__number {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: var(--space-2);
}

.stat-card__label {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* ── Process Steps ──────────────────────────────────────────── */
.step {
  display: flex;
  gap: var(--space-6);
  align-items: flex-start;
}

.step__number {
  width: 48px;
  height: 48px;
  min-width: 48px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(79,142,247,0.2), rgba(0,212,170,0.1));
  border: 1px solid rgba(79,142,247,0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: var(--text-sm);
  color: var(--color-primary);
  font-variant-numeric: tabular-nums;
}

.step__content h4 {
  margin-bottom: var(--space-2);
  font-size: var(--text-lg);
}

.step__content p {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

/* ── Forms ──────────────────────────────────────────────────── */
.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-group label {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
}

.form-control {
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-size: var(--text-sm);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  outline: none;
}

.form-control::placeholder { color: var(--color-text-subtle); }

.form-control:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(79,142,247,0.15);
}

textarea.form-control {
  resize: vertical;
  min-height: 120px;
}

select.form-control {
  -webkit-appearance: none;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%237A8BA8' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.5rem;
}

/* ── Alerts / Notices ───────────────────────────────────────── */
.notice {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  border-left: 3px solid;
}

.notice--info {
  background: rgba(79,142,247,0.08);
  border-color: var(--color-primary);
  color: var(--color-text-muted);
}

/* ── Testimonials ───────────────────────────────────────────── */
.testimonial {
  position: relative;
}

.testimonial__quote {
  font-size: var(--text-lg);
  line-height: 1.7;
  color: var(--color-text);
  margin-bottom: var(--space-6);
  font-style: italic;
}

.testimonial__author {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.testimonial__avatar {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: var(--text-sm);
  color: white;
  flex-shrink: 0;
}

.testimonial__name {
  font-weight: 600;
  font-size: var(--text-sm);
  color: var(--color-white);
}

.testimonial__role {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

/* ── CTA Strip ──────────────────────────────────────────────── */
.cta-section {
  background: linear-gradient(135deg, var(--color-surface), var(--color-surface-2));
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: -100px;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 300px;
  background: radial-gradient(ellipse, rgba(79,142,247,0.1), transparent 70%);
  pointer-events: none;
}

/* ── Footer ─────────────────────────────────────────────────── */
.footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding-block: var(--space-16);
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: var(--space-12);
}

.footer__brand p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-top: var(--space-4);
  max-width: 280px;
}

.footer__col h5 {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-subtle);
  margin-bottom: var(--space-4);
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer__links a {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}
.footer__links a:hover { color: var(--color-white); }

.footer__bottom {
  margin-top: var(--space-12);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.footer__bottom p {
  font-size: var(--text-xs);
  color: var(--color-text-subtle);
}

/* ── Page Hero ──────────────────────────────────────────────── */
.page-hero {
  padding-top: calc(var(--space-32) + 64px);
  padding-bottom: var(--space-20);
  text-align: center;
  position: relative;
}

.page-hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 50%;
  background: radial-gradient(ellipse at 50% 0%, rgba(79,142,247,0.1), transparent 70%);
  pointer-events: none;
}

.page-hero__subtitle {
  font-size: var(--text-xl);
  color: var(--color-text-muted);
  max-width: 640px;
  margin-inline: auto;
  margin-top: var(--space-4);
  line-height: 1.65;
}

/* ── Accordion / FAQ ────────────────────────────────────────── */
.faq-item {
  border-bottom: 1px solid var(--color-border);
}

.faq-item__question {
  width: 100%;
  text-align: left;
  padding: var(--space-5) 0;
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-text);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  transition: color var(--transition-fast);
  background: none;
  border: none;
}

.faq-item__question:hover { color: var(--color-primary); }

.faq-item__icon {
  width: 24px;
  height: 24px;
  min-width: 24px;
  border-radius: var(--radius-sm);
  background: rgba(79,142,247,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  font-size: 16px;
  transition: transform var(--transition-base), background var(--transition-base);
}

.faq-item.open .faq-item__icon {
  transform: rotate(45deg);
  background: rgba(79,142,247,0.2);
}

.faq-item__answer {
  display: none;
  padding-bottom: var(--space-5);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
}

.faq-item.open .faq-item__answer { display: block; }

/* ── Pricing / Engagement Cards ─────────────────────────────── */
.pricing-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  display: flex;
  flex-direction: column;
}

.pricing-card--featured {
  border-color: rgba(79,142,247,0.4);
  background: linear-gradient(180deg, rgba(79,142,247,0.08), var(--color-surface));
  position: relative;
}

.pricing-card__badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: white;
  font-size: var(--text-xs);
  font-weight: 700;
  padding: 4px 14px;
  border-radius: var(--radius-full);
  white-space: nowrap;
}

.pricing-card__price {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--color-white);
  margin-block: var(--space-4);
}

.pricing-card__price span {
  font-size: var(--text-sm);
  font-weight: 400;
  color: var(--color-text-muted);
  letter-spacing: 0;
}

/* ── Resource Cards ─────────────────────────────────────────── */
.resource-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: border-color var(--transition-base), box-shadow var(--transition-base), transform var(--transition-base);
}

.resource-card:hover {
  border-color: var(--color-border-hover);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.resource-card__image {
  height: 160px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  position: relative;
  overflow: hidden;
}

.resource-card__body {
  padding: var(--space-6);
}

.resource-card__tag {
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--color-accent);
  margin-bottom: var(--space-2);
}

.resource-card__title {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: var(--space-3);
  line-height: 1.3;
}

.resource-card__excerpt {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.65;
  margin-bottom: var(--space-5);
}

/* ── Case Study ─────────────────────────────────────────────── */
.case-stat {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  text-align: center;
}

.case-stat__value {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: var(--space-2);
}

.case-stat__label {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* ── Glow decorations ───────────────────────────────────────── */
.glow-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
  z-index: 0;
}

.glow-orb--blue {
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(79,142,247,0.12), transparent 70%);
}

.glow-orb--teal {
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(0,212,170,0.1), transparent 70%);
}

/* ── Utility ────────────────────────────────────────────────── */
.mt-2  { margin-top: var(--space-2); }
.mt-4  { margin-top: var(--space-4); }
.mt-6  { margin-top: var(--space-6); }
.mt-8  { margin-top: var(--space-8); }
.mt-12 { margin-top: var(--space-12); }
.mb-2  { margin-bottom: var(--space-2); }
.mb-4  { margin-bottom: var(--space-4); }
.mb-6  { margin-bottom: var(--space-6); }
.mb-8  { margin-bottom: var(--space-8); }
.mb-12 { margin-bottom: var(--space-12); }

.text-center { text-align: center; }
.text-left   { text-align: left; }

.relative { position: relative; }
.z-1 { z-index: 1; }

.hidden { display: none !important; }

/* ── Responsive ─────────────────────────────────────────────── */
@media (max-width: 1024px) {
  .footer__grid { grid-template-columns: 1.5fr 1fr 1fr; }
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  :root { --gutter: 1rem; }

  .section { padding-block: var(--space-16); }
  .section--lg { padding-block: var(--space-20); }

  .nav__links,
  .nav__actions { display: none; }
  .nav__toggle { display: flex; }

  .grid--2,
  .grid--3,
  .grid--4 { grid-template-columns: 1fr; }

  .footer__grid {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }

  .footer__bottom {
    flex-direction: column;
    align-items: flex-start;
  }

  .step { flex-direction: column; }
}

@media (max-width: 480px) {
  h1 { font-size: 2rem; }
  h2 { font-size: 1.625rem; }

  .btn--lg {
    width: 100%;
    justify-content: center;
  }
}

/* ── Google Fonts Import Placeholder ────────────────────────── */
/* Add this link in your HTML <head>:
   <link href="https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap" rel="stylesheet"> */

/* ============================================================
   EXTENSION — Trust, Authority & New Page Components
   Added for: Founders, Process, Audit Library, Why Rigel
   ============================================================ */

/* ── Nav Dropdown ──────────────────────────────────────────── */
.nav__group {
  position: relative;
}

.nav__group:hover .nav__dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.nav__dropdown {
  position: absolute;
  top: calc(100% + 12px);
  left: 50%;
  transform: translateX(-50%) translateY(-8px);
  width: 200px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-2);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base), transform var(--transition-base), visibility var(--transition-base);
  box-shadow: var(--shadow-lg);
  z-index: 200;
}

.nav__dropdown::before {
  content: '';
  position: absolute;
  top: -6px;
  left: 50%;
  transform: translateX(-50%) rotate(45deg);
  width: 10px;
  height: 10px;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-left: 1px solid var(--color-border);
}

.nav__dropdown a {
  display: block;
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background var(--transition-fast);
}

.nav__dropdown a:hover {
  color: var(--color-white);
  background: rgba(255,255,255,0.05);
}

/* ── Founder Cards ─────────────────────────────────────────── */
.founder-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-8);
  margin-top: var(--space-12);
}

.founder-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.founder-card:hover {
  border-color: var(--color-border-hover);
  box-shadow: var(--shadow-md);
}

.founder-card--featured {
  border-color: rgba(79,142,247,0.25);
  background: linear-gradient(180deg, rgba(79,142,247,0.04) 0%, var(--color-surface) 60%);
}

.founder-card__header {
  padding: var(--space-8) var(--space-8) var(--space-6);
  display: flex;
  gap: var(--space-5);
  align-items: flex-start;
  border-bottom: 1px solid var(--color-border);
}

.founder-avatar {
  width: 72px;
  height: 72px;
  min-width: 72px;
  border-radius: var(--radius-xl);
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 800;
  color: white;
  letter-spacing: -0.02em;
  box-shadow: 0 4px 20px rgba(79,142,247,0.3);
}

.founder-avatar--placeholder {
  background: linear-gradient(135deg, var(--color-surface-2), rgba(79,142,247,0.3));
  border: 2px dashed rgba(79,142,247,0.3);
  color: var(--color-text-muted);
  font-size: 1rem;
}

.founder-card__meta h3 {
  font-size: var(--text-xl);
  margin-bottom: var(--space-1);
  color: var(--color-white);
}

.founder-card__title {
  font-size: var(--text-sm);
  color: var(--color-accent);
  font-weight: 600;
  margin-bottom: var(--space-2);
}

.founder-card__body {
  padding: var(--space-6) var(--space-8);
}

.founder-card__bio {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.75;
  margin-bottom: var(--space-5);
}

.founder-card__expertise {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.expertise-tag {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 500;
  background: rgba(79,142,247,0.08);
  border: 1px solid rgba(79,142,247,0.15);
  color: var(--color-text-muted);
  transition: all var(--transition-fast);
}

.expertise-tag:hover {
  background: rgba(79,142,247,0.15);
  color: var(--color-primary);
}

.founder-card__placeholder-notice {
  background: rgba(79,142,247,0.06);
  border: 1px dashed rgba(79,142,247,0.2);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  font-size: var(--text-xs);
  color: var(--color-text-subtle);
  font-style: italic;
  margin-top: var(--space-4);
}

/* ── Process Timeline ──────────────────────────────────────── */
.process-timeline {
  position: relative;
  padding-left: 0;
}

.process-timeline::before {
  content: '';
  position: absolute;
  left: 23px;
  top: 48px;
  bottom: 48px;
  width: 2px;
  background: linear-gradient(180deg,
    var(--color-primary) 0%,
    var(--color-accent) 50%,
    rgba(0,212,170,0.2) 100%
  );
}

.timeline-step {
  display: flex;
  gap: var(--space-6);
  padding-bottom: var(--space-10);
  position: relative;
}

.timeline-step:last-child {
  padding-bottom: 0;
}

.timeline-step__marker {
  display: flex;
  flex-direction: column;
  align-items: center;
  flex-shrink: 0;
  z-index: 1;
}

.timeline-step__num {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: var(--text-sm);
  position: relative;
  z-index: 2;
  flex-shrink: 0;
  transition: transform var(--transition-base);
}

.timeline-step:hover .timeline-step__num {
  transform: scale(1.08);
}

.timeline-step__num--1 { background: linear-gradient(135deg, #4F8EF7, #6B9FF8); color: white; box-shadow: 0 4px 16px rgba(79,142,247,0.4); }
.timeline-step__num--2 { background: linear-gradient(135deg, #5B8BF9, #4FAFF4); color: white; box-shadow: 0 4px 16px rgba(79,175,244,0.35); }
.timeline-step__num--3 { background: linear-gradient(135deg, #39B8D4, #2EC9C4); color: white; box-shadow: 0 4px 16px rgba(46,201,196,0.35); }
.timeline-step__num--4 { background: linear-gradient(135deg, #10CAB5, #00D4AA); color: #050B18; box-shadow: 0 4px 16px rgba(0,212,170,0.35); }
.timeline-step__num--5 { background: linear-gradient(135deg, #00D4AA, #00BF96); color: #050B18; box-shadow: 0 4px 16px rgba(0,212,170,0.3); }
.timeline-step__num--6 { background: linear-gradient(135deg, #48BB78, #38A169); color: white; box-shadow: 0 4px 16px rgba(72,187,120,0.35); }

.timeline-step__content {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6) var(--space-8);
  flex: 1;
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
  margin-top: 4px;
}

.timeline-step:hover .timeline-step__content {
  border-color: var(--color-border-hover);
  box-shadow: var(--shadow-sm);
}

.timeline-step__phase {
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-2);
}

.timeline-step__title {
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: var(--space-3);
}

.timeline-step__desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.75;
  margin-bottom: var(--space-4);
}

.timeline-step__deliverables {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.deliverable-pill {
  font-size: var(--text-xs);
  font-weight: 500;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--color-border);
  color: var(--color-text-subtle);
}

/* ── Audit Sample Cards ────────────────────────────────────── */
.audit-sample-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: border-color var(--transition-base), box-shadow var(--transition-base), transform var(--transition-base);
}

.audit-sample-card:hover {
  border-color: var(--color-border-hover);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.audit-sample-card__header {
  padding: var(--space-6) var(--space-6) var(--space-5);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
}

.audit-industry-icon {
  width: 44px;
  height: 44px;
  min-width: 44px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  flex-shrink: 0;
}

.audit-sample-card__industry {
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-subtle);
  margin-bottom: 4px;
}

.audit-sample-card__name {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-white);
  line-height: 1.3;
}

.audit-sample-card__body {
  padding: var(--space-5) var(--space-6);
}

.audit-opportunity {
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-border);
  font-size: var(--text-sm);
}

.audit-opportunity:last-of-type { border-bottom: none; }

.audit-opportunity__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
  margin-top: 6px;
}

.audit-opportunity__text { color: var(--color-text-muted); line-height: 1.5; }

.audit-sample-card__footer {
  padding: var(--space-4) var(--space-6) var(--space-5);
  background: rgba(255,255,255,0.02);
  border-top: 1px solid var(--color-border);
}

.audit-services-label {
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-subtle);
  margin-bottom: var(--space-2);
}

.audit-service-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.audit-service-tag {
  font-size: var(--text-xs);
  padding: 3px 8px;
  border-radius: var(--radius-full);
  background: rgba(0,212,170,0.08);
  border: 1px solid rgba(0,212,170,0.15);
  color: var(--color-accent);
  font-weight: 500;
}

/* ── Educational disclaimer badge ─────────────────────────── */
.edu-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 6px 14px;
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
  background: rgba(236,201,75,0.08);
  border: 1px solid rgba(236,201,75,0.2);
  color: #ECC94B;
  letter-spacing: 0.04em;
}

/* ── Comparison Table (Why Rigel) ──────────────────────────── */
.comparison-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.comparison-table th,
.comparison-table td {
  padding: var(--space-4) var(--space-5);
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

.comparison-table th {
  background: var(--color-surface-2);
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-subtle);
}

.comparison-table th:first-child { width: 35%; }

.comparison-table tr:last-child td { border-bottom: none; }

.comparison-table td:first-child {
  color: var(--color-text);
  font-weight: 500;
  font-size: var(--text-sm);
}

.comparison-table td:nth-child(2) {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

.comparison-table td:nth-child(3) {
  color: var(--color-accent);
  font-size: var(--text-sm);
  font-weight: 500;
}

.comparison-table tr:nth-child(odd) td {
  background: rgba(255,255,255,0.01);
}

.comparison-table__col-rigel {
  background: rgba(0,212,170,0.04) !important;
}

/* ── Why Rigel: Differentiator Cards ─────────────────────── */
.diff-card {
  padding: var(--space-7);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.diff-card:hover {
  border-color: var(--color-border-hover);
  box-shadow: var(--shadow-sm);
}

.diff-card__icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  margin-bottom: var(--space-4);
}

.diff-card h4 {
  font-size: var(--text-lg);
  margin-bottom: var(--space-3);
  color: var(--color-white);
}

.diff-card p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.75;
}

/* ── Trust Placeholder Sections ────────────────────────────── */
.trust-placeholder {
  background: var(--color-surface);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-12);
  text-align: center;
  position: relative;
}

.trust-placeholder__icon {
  font-size: 2rem;
  margin-bottom: var(--space-4);
  opacity: 0.4;
}

.trust-placeholder__label {
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-text-subtle);
  margin-bottom: var(--space-2);
}

.trust-placeholder__desc {
  font-size: var(--text-sm);
  color: var(--color-text-subtle);
  max-width: 300px;
  margin-inline: auto;
  line-height: 1.65;
}

.trust-placeholder-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
}

.partner-placeholder {
  height: 72px;
  background: var(--color-surface-2);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-xs);
  color: var(--color-text-subtle);
  font-weight: 500;
}

/* ── Expanded Footer (5-column) ────────────────────────────── */
.footer__expanded {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr 1.3fr;
  gap: var(--space-10);
}

.footer__newsletter-strip {
  border-bottom: 1px solid var(--color-border);
  padding-bottom: var(--space-10);
  margin-bottom: var(--space-10);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-8);
  flex-wrap: wrap;
}

.footer__newsletter-copy h4 {
  font-size: var(--text-lg);
  margin-bottom: var(--space-1);
  color: var(--color-white);
}

.footer__newsletter-copy p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.footer__newsletter-form {
  display: flex;
  gap: var(--space-2);
  flex-shrink: 0;
}

.footer__newsletter-form input {
  width: 220px;
  padding: 0.625rem 1rem;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-size: var(--text-sm);
  outline: none;
  transition: border-color var(--transition-fast);
}

.footer__newsletter-form input:focus {
  border-color: var(--color-primary);
}

.footer__newsletter-form input::placeholder { color: var(--color-text-subtle); }

.footer__social {
  display: flex;
  gap: var(--space-3);
  margin-top: var(--space-5);
}

.social-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  color: var(--color-text-muted);
  transition: all var(--transition-fast);
  text-decoration: none;
}

.social-icon:hover {
  color: var(--color-white);
  background: rgba(255,255,255,0.08);
  border-color: var(--color-border-hover);
}

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

/* ── Responsive additions ──────────────────────────────────── */
@media (max-width: 1100px) {
  .footer__expanded { grid-template-columns: 1.4fr 1fr 1fr 1fr; }
  .footer__expanded > *:last-child { grid-column: 1 / -1; }
  .founder-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .footer__expanded { grid-template-columns: 1fr 1fr; gap: var(--space-8); }
  .footer__newsletter-strip { flex-direction: column; align-items: flex-start; }
  .footer__newsletter-form { width: 100%; }
  .footer__newsletter-form input { flex: 1; width: auto; }
  .trust-placeholder-grid { grid-template-columns: repeat(2, 1fr); }
  .comparison-table { display: block; overflow-x: auto; }
  .process-timeline::before { display: none; }
}

@media (max-width: 480px) {
  .footer__expanded { grid-template-columns: 1fr; }
  .trust-placeholder-grid { grid-template-columns: 1fr 1fr; }
}