/* ================================
   ClauseHub Website — Global Styles
   Based on ClauseHub Brand & Style Guide v1.0
================================ */

:root {
  /* === Brand Tokens === */
  --ch-navy:        #0B1F3A;
  --ch-navy-mid:    #122845;
  --ch-navy-light:  #1C3A5C;
  --ch-slate:       #2C3E50;
  --ch-slate-mid:   #3D5166;
  --ch-green:       #1A7A4A;
  --ch-green-light: #2AAD6A;
  --ch-green-pale:  #AFECD0;
  --ch-white:       #FFFFFF;
  --ch-offwhite:    #F4F6F8;
  --ch-light-grey:  #E2E8EF;
  --ch-mid-grey:    #94A3B8;
  --ch-text-muted:  #6B8BAE;

  /* === Typography === */
  --font-display: 'DM Serif Display', Georgia, serif;
  --font-sans:    'DM Sans', system-ui, sans-serif;
  --font-mono:    'DM Mono', 'Courier New', monospace;

  /* === Spacing === */
  --space-xs:  4px;
  --space-sm:  8px;
  --space-md:  16px;
  --space-lg:  24px;
  --space-xl:  40px;
  --space-2xl: 64px;
  --space-3xl: 96px;

  /* === Radius === */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;

  /* === Transitions === */
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  background: var(--ch-white);
  color: var(--ch-navy);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul { list-style: none; }

/* ================================
   SITE HEADER / NAV
================================ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(11, 31, 58, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--ch-navy-light);
  transition: background 0.3s var(--ease);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-xl);
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.nav-logo-icon {
  width: 28px;
  height: 28px;
  background: var(--ch-green);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.nav-logo-icon svg { width: 16px; height: 16px; }

.nav-wordmark {
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 600;
  color: var(--ch-white);
  letter-spacing: -0.02em;
}

.nav-wordmark span { color: var(--ch-green-light); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--ch-mid-grey);
  transition: color 0.2s var(--ease);
}

.nav-links a:hover { color: var(--ch-white); }
.nav-links a.active { color: var(--ch-green-light); }

/* Nav dropdown */
.nav-dropdown {
  position: relative;
}

.nav-dropdown-trigger {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 14px;
  font-weight: 500;
  color: var(--ch-mid-grey);
  cursor: pointer;
  transition: color 0.2s var(--ease);
}

.nav-dropdown-trigger:hover { color: var(--ch-white); }

.nav-dropdown-trigger svg {
  width: 12px;
  height: 12px;
  transition: transform 0.2s var(--ease);
}

.nav-dropdown:hover .nav-dropdown-trigger svg {
  transform: rotate(180deg);
}

.nav-dropdown-menu {
  position: absolute;
  top: 100%;
  left: -12px;
  padding-top: 12px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-4px);
  transition: opacity 0.2s var(--ease), transform 0.2s var(--ease), visibility 0.2s;
}

.nav-dropdown:hover .nav-dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.nav-dropdown-inner {
  background: var(--ch-navy-mid);
  border: 1px solid var(--ch-navy-light);
  border-radius: var(--radius-md);
  padding: 8px 0;
  min-width: 200px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.3);
}

.nav-dropdown-inner a {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  font-size: 13px;
  font-weight: 500;
  color: var(--ch-mid-grey);
  transition: background 0.15s var(--ease), color 0.15s var(--ease);
}

.nav-dropdown-inner a:hover {
  background: var(--ch-navy-light);
  color: var(--ch-white);
}

.nav-dropdown-inner a.disabled {
  opacity: 0.4;
  cursor: not-allowed;
  pointer-events: none;
}

.nav-dropdown-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  flex-shrink: 0;
}

.nav-dropdown-dot--live { background: var(--ch-green-light); }
.nav-dropdown-dot--planned { background: var(--ch-mid-grey); }

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--ch-white) !important;
  background: var(--ch-green);
  padding: 8px 20px;
  border-radius: 8px;
  transition: background 0.2s var(--ease), transform 0.15s var(--ease);
}

.nav-cta:hover {
  background: var(--ch-green-light);
  transform: translateY(-1px);
  color: var(--ch-white) !important;
}

/* ================================
   BUTTONS
================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 600;
  padding: 12px 28px;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: all 0.2s var(--ease);
  text-decoration: none;
}

.btn-primary {
  background: var(--ch-green);
  color: var(--ch-white);
}

.btn-primary:hover {
  background: var(--ch-green-light);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(26, 122, 74, 0.25);
}

.btn-secondary {
  background: transparent;
  color: var(--ch-white);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-secondary:hover {
  border-color: var(--ch-green-light);
  color: var(--ch-green-light);
}

.btn-outline {
  background: transparent;
  color: var(--ch-navy);
  border: 1px solid var(--ch-light-grey);
}

.btn-outline:hover {
  border-color: var(--ch-green);
  color: var(--ch-green);
}

.btn-sm {
  font-size: 13px;
  padding: 8px 20px;
}

.btn-lg {
  font-size: 16px;
  padding: 16px 36px;
  border-radius: var(--radius-lg);
}

/* ================================
   BADGES
================================ */
.badge {
  font-size: 11px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 20px;
  letter-spacing: 0.04em;
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.badge-green  { background: rgba(26, 122, 74, 0.12); color: var(--ch-green); }
.badge-navy   { background: var(--ch-navy); color: var(--ch-green-light); }
.badge-light  { background: var(--ch-offwhite); color: var(--ch-slate); border: 1px solid var(--ch-light-grey); }

/* ================================
   SECTION CONTAINERS
================================ */
.section {
  padding: var(--space-3xl) var(--space-xl);
}

.section--navy {
  background: var(--ch-navy);
  color: var(--ch-white);
}

.section--offwhite {
  background: var(--ch-offwhite);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ch-green-light);
  margin-bottom: var(--space-md);
}

.section-heading {
  font-family: var(--font-display);
  font-size: 40px;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-md);
}

.section-heading em {
  font-style: italic;
  color: var(--ch-green-light);
}

.section-subheading {
  font-size: 17px;
  color: var(--ch-mid-grey);
  max-width: 560px;
  line-height: 1.6;
  margin-bottom: var(--space-2xl);
}

/* ================================
   CARD SYSTEM
================================ */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.card-grid--2 { grid-template-columns: repeat(2, 1fr); }
.card-grid--4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: var(--ch-white);
  border: 1px solid var(--ch-light-grey);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition: border-color 0.2s var(--ease), box-shadow 0.2s var(--ease), transform 0.2s var(--ease);
}

.card:hover {
  border-color: var(--ch-green-light);
  box-shadow: 0 4px 20px rgba(42, 173, 106, 0.08);
  transform: translateY(-2px);
}

.card--dark {
  background: var(--ch-navy-mid);
  border-color: var(--ch-navy-light);
}

.card--dark:hover {
  border-color: var(--ch-green-light);
  box-shadow: 0 4px 20px rgba(42, 173, 106, 0.12);
}

.card-icon {
  width: 44px;
  height: 44px;
  background: var(--ch-navy);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-md);
}

.card--dark .card-icon {
  background: var(--ch-navy-light);
}

.card-icon svg { width: 22px; height: 22px; }

.card-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--ch-navy);
  margin-bottom: 6px;
}

.card--dark .card-title { color: var(--ch-white); }

.card-desc {
  font-size: 14px;
  color: var(--ch-mid-grey);
  line-height: 1.6;
}

.card-meta {
  font-size: 12px;
  color: var(--ch-text-muted);
  margin-top: var(--space-md);
  font-family: var(--font-mono);
}

/* ================================
   DATA TABLES
================================ */
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  background: var(--ch-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--ch-light-grey);
}

.data-table th {
  text-align: left;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ch-mid-grey);
  padding: 12px 16px;
  border-bottom: 1px solid var(--ch-light-grey);
  background: var(--ch-offwhite);
}

.data-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--ch-offwhite);
  color: var(--ch-slate);
}

.data-table tr:last-child td { border-bottom: none; }
.data-table tr:hover td { background: rgba(42, 173, 106, 0.03); }

/* ================================
   SITE FOOTER
================================ */
.site-footer {
  background: var(--ch-navy);
  color: var(--ch-mid-grey);
  padding: var(--space-3xl) var(--space-xl) var(--space-2xl);
  border-top: 1px solid var(--ch-navy-light);
}

.footer-grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-2xl);
  margin-bottom: var(--space-2xl);
}

.footer-brand-col .nav-wordmark {
  font-size: 18px;
  margin-bottom: var(--space-md);
}

.footer-brand-desc {
  font-size: 14px;
  color: var(--ch-text-muted);
  line-height: 1.6;
  max-width: 280px;
}

.footer-col-title {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ch-text-muted);
  margin-bottom: var(--space-md);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  font-size: 14px;
  color: var(--ch-mid-grey);
  transition: color 0.15s var(--ease);
}

.footer-links a:hover { color: var(--ch-white); }

.footer-bottom {
  max-width: 1200px;
  margin: 0 auto;
  padding-top: var(--space-lg);
  border-top: 1px solid var(--ch-navy-light);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: var(--ch-text-muted);
}

/* ================================
   RESPONSIVE
================================ */
@media (max-width: 1024px) {
  .card-grid { grid-template-columns: repeat(2, 1fr); }
  .card-grid--4 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: var(--space-xl); }
}

@media (max-width: 768px) {
  .section { padding: var(--space-2xl) var(--space-lg); }
  .section-heading { font-size: 32px; }
  .card-grid { grid-template-columns: 1fr; }
  .card-grid--2 { grid-template-columns: 1fr; }
  .card-grid--4 { grid-template-columns: 1fr 1fr; }
  .nav-links { display: none; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero-stats { flex-direction: column; gap: var(--space-lg); }
}

@media (max-width: 480px) {
  .card-grid--4 { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; }
  .btn-lg { width: 100%; justify-content: center; }
}