/* ============================================
   AzaniaSCM Marketing Site — Core Styles
   Mobile-first, CSS custom properties, no frameworks
   ============================================ */

:root {
  --color-primary: #1a3a5c;
  --color-primary-light: #2a5a8c;
  --color-primary-dark: #0d1f33;
  --color-accent: #e8a838;
  --color-accent-hover: #d4952e;
  --color-text: #1a1a2e;
  --color-text-light: #4a4a6a;
  --color-bg: #ffffff;
  --color-bg-alt: #f4f6f8;
  --color-bg-dark: #1a1a2e;
  --color-border: #d1d5db;
  --color-success: #16a34a;
  --color-error: #dc2626;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-heading: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --max-width: 1200px;
  --radius: 8px;
  --shadow: 0 1px 3px rgba(0,0,0,0.1), 0 1px 2px rgba(0,0,0,0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);
  --transition: 200ms ease;
}

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

html { font-size: 16px; scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main { flex: 1; }

img { max-width: 100%; height: auto; display: block; }

a { color: var(--color-primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--color-primary-light); }

ul { list-style: none; }

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-primary-dark);
}

h1 { font-size: clamp(2rem, 5vw, 3rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2rem); }
h3 { font-size: clamp(1.25rem, 2.5vw, 1.5rem); }

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  text-align: center;
  line-height: 1.4;
}

.btn--primary {
  background: var(--color-accent);
  color: var(--color-primary-dark);
  border-color: var(--color-accent);
}

.btn--primary:hover {
  background: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
  color: var(--color-primary-dark);
}

.btn--outline {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn--outline:hover {
  background: var(--color-primary);
  color: #fff;
}

.btn--sm { padding: 0.5rem 1rem; font-size: 0.875rem; }
.btn--lg { padding: 1rem 2rem; font-size: 1.125rem; }

.site-header {
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0.75rem 1.5rem;
}

.nav__logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-primary-dark);
  text-decoration: none;
}

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

.nav__toggle {
  display: flex;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav__toggle-bar {
  width: 24px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform var(--transition);
}

.nav__menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  padding: 1rem 1.5rem;
  box-shadow: var(--shadow-lg);
}

.nav__menu.is-open {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.nav__menu a {
  display: block;
  padding: 0.5rem 0;
  color: var(--color-text);
  font-weight: 500;
}

.nav__menu a:hover { color: var(--color-primary); }

.nav__cta { margin-top: 0.5rem; }

@media (min-width: 768px) {
  .nav__toggle { display: none; }

  .nav__menu {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 0.25rem;
    position: static;
    background: none;
    border: none;
    padding: 0;
    box-shadow: none;
  }

  .nav__menu a { padding: 0.5rem 0.75rem; font-size: 0.9rem; }

  .nav__cta { margin-top: 0; margin-left: 0.5rem; }
}

.section { padding: 4rem 0; }
.section--alt { background: var(--color-bg-alt); }
.section--dark { background: var(--color-bg-dark); color: #fff; }
.section__title { text-align: center; margin-bottom: 1rem; }
.section__subtitle {
  text-align: center;
  color: var(--color-text-light);
  max-width: 640px;
  margin: 0 auto 3rem;
}

.hero { padding: 4rem 0; text-align: center; }
.hero__title { margin-bottom: 1.5rem; }
.hero__subtitle {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--color-text-light);
  max-width: 720px;
  margin: 0 auto 2rem;
  line-height: 1.7;
}
.hero__cta { display: flex; flex-wrap: wrap; gap: 1rem; justify-content: center; }

.card-grid { display: grid; grid-template-columns: 1fr; gap: 1.5rem; }
@media (min-width: 640px) { .card-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 960px) { .card-grid { grid-template-columns: repeat(3, 1fr); } }

.card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 2rem;
  box-shadow: var(--shadow);
  transition: box-shadow var(--transition), transform var(--transition);
}
.card:hover { box-shadow: var(--shadow-lg); transform: translateY(-2px); }
.card__icon { font-size: 2rem; margin-bottom: 1rem; }
.card__title { font-size: 1.125rem; margin-bottom: 0.75rem; }
.card__text { color: var(--color-text-light); font-size: 0.95rem; line-height: 1.6; margin-bottom: 1rem; }
.card__link { font-weight: 600; color: var(--color-primary); }
.card__link:hover { color: var(--color-primary-light); }

.evidence-chain { overflow-x: auto; padding: 2rem 0; -webkit-overflow-scrolling: touch; }
.evidence-chain__track { display: flex; align-items: center; gap: 0; min-width: max-content; padding: 0 1rem; }
.evidence-chain__step { display: flex; flex-direction: column; align-items: center; text-align: center; min-width: 100px; flex-shrink: 0; }
.evidence-chain__icon {
  width: 48px; height: 48px; border-radius: 50%; background: var(--color-primary); color: #fff;
  display: flex; align-items: center; justify-content: center; font-size: 1.25rem; margin-bottom: 0.5rem;
}
.evidence-chain__label { font-size: 0.8rem; font-weight: 600; color: var(--color-text); max-width: 90px; }
.evidence-chain__arrow { font-size: 1.5rem; color: var(--color-primary-light); flex-shrink: 0; padding: 0 0.25rem; }

.cta-banner { background: var(--color-primary); color: #fff; text-align: center; padding: 4rem 0; }
.cta-banner h2 { color: #fff; margin-bottom: 1.5rem; }
.cta-banner .btn--primary { margin: 0 0.5rem; }

.site-footer { background: var(--color-bg-dark); color: #ccc; padding: 3rem 0 1.5rem; }
.footer__grid { display: grid; grid-template-columns: 1fr; gap: 2rem; margin-bottom: 2rem; }
@media (min-width: 640px) { .footer__grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 960px) { .footer__grid { grid-template-columns: 2fr 1fr 1fr 1fr; } }
.footer__logo { font-size: 1.5rem; font-weight: 800; color: #fff; text-decoration: none; display: inline-block; margin-bottom: 0.75rem; }
.footer__attribution { font-size: 0.9rem; line-height: 1.6; }
.footer__attribution a { color: var(--color-accent); }
.footer__attribution a:hover { color: var(--color-accent-hover); }
.footer__heading { font-size: 0.875rem; text-transform: uppercase; letter-spacing: 0.05em; color: #fff; margin-bottom: 1rem; }
.footer__links ul, .footer__contact ul { display: flex; flex-direction: column; gap: 0.5rem; }
.footer__links a, .footer__contact a { color: #aaa; font-size: 0.9rem; }
.footer__links a:hover, .footer__contact a:hover { color: #fff; }
.footer__bottom {
  border-top: 1px solid #333; padding-top: 1.5rem;
  display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 1rem; font-size: 0.85rem;
}
.footer__legal { display: flex; gap: 1.5rem; }
.footer__legal a { color: #888; }
.footer__legal a:hover { color: #fff; }

.form-group { margin-bottom: 1.5rem; }
.form-group label { display: block; font-weight: 600; margin-bottom: 0.5rem; font-size: 0.95rem; }
.form-group input, .form-group textarea, .form-group select {
  width: 100%; padding: 0.75rem 1rem; border: 1px solid var(--color-border);
  border-radius: var(--radius); font-size: 1rem; font-family: var(--font-body); transition: border-color var(--transition);
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
  outline: 2px solid var(--color-primary); outline-offset: 2px; border-color: var(--color-primary);
}
.form-group textarea { min-height: 150px; resize: vertical; }
.form__honeypot { position: absolute; left: -9999px; opacity: 0; height: 0; width: 0; overflow: hidden; }
.form__status { padding: 1rem; border-radius: var(--radius); margin-top: 1rem; display: none; }
.form__status--success { display: block; background: #dcfce7; color: var(--color-success); border: 1px solid #bbf7d0; }
.form__status--error { display: block; background: #fee2e2; color: var(--color-error); border: 1px solid #fecaca; }

.feature-hero { padding: 4rem 0 2rem; background: var(--color-bg-alt); }
.feature-hero__tag { display: inline-block; font-size: 0.8rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.05em; color: var(--color-accent); margin-bottom: 0.75rem; }
.feature-section { padding: 3rem 0; }
.feature-section h2 { margin-bottom: 1rem; }
.feature-section p { color: var(--color-text-light); max-width: 720px; line-height: 1.7; margin-bottom: 1rem; }
.feature-placeholder { background: var(--color-bg-alt); border: 2px dashed var(--color-border); border-radius: var(--radius); padding: 4rem 2rem; text-align: center; color: var(--color-text-light); margin: 2rem 0; }

.text-center { text-align: center; }
.mt-1 { margin-top: 0.5rem; } .mt-2 { margin-top: 1rem; } .mt-3 { margin-top: 1.5rem; } .mt-4 { margin-top: 2rem; }
.mb-1 { margin-bottom: 0.5rem; } .mb-2 { margin-bottom: 1rem; } .mb-3 { margin-bottom: 1.5rem; } .mb-4 { margin-bottom: 2rem; }

@media print {
  .site-header, .site-footer, .nav__toggle, .cta-banner { display: none; }
  body { color: #000; background: #fff; }
}