/* ============================================================
   PRAECO — Design System & Global Styles
   DM Sans · Linen · Forest Green · Gold
   ============================================================ */

/* --- Tokens ------------------------------------------------ */
:root {
  --bg:        #FFFFFF;
  --ink:       #1A1A18;
  --ink-muted: #6B6B68;
  --green:     #2D6A4F;
  --green-dk:  #1B4332;
  --gold:      #C9A961;
  --gold-lt:   #E8D9A8;
  --white:     #FFFFFF;
  --gray-lt:   #D4D1CC;
  --gray:      #9B9894;
  --radius:    16px;
  --radius-sm: 8px;
  --grid:      8px;
  --font:      'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- Reset ------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.6;
  overflow-x: hidden;
}
img, svg { display: block; max-width: 100%; }
a { color: var(--green); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--green-dk); }
button { font-family: var(--font); cursor: pointer; border: none; background: none; }
ul, ol { list-style: none; }

/* --- Typography -------------------------------------------- */
.t-hero    { font-size: clamp(2rem, 5vw, 3rem); font-weight: 500; line-height: 1.15; }
.t-section { font-size: clamp(1.5rem, 3.5vw, 2.25rem); font-weight: 600; line-height: 1.2; }
.t-card    { font-size: 1.125rem; font-weight: 500; line-height: 1.4; }
.t-body    { font-size: 1rem; font-weight: 400; line-height: 1.6; }
.t-small   { font-size: 0.875rem; font-weight: 400; line-height: 1.5; color: var(--ink-muted); }
.t-label   { font-size: 0.75rem; font-weight: 500; letter-spacing: 1px; text-transform: uppercase; color: var(--ink-muted); }

/* --- Layout ------------------------------------------------ */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 calc(var(--grid) * 3);
}
.section {
  padding: calc(var(--grid) * 12) 0;
}
.section--alt {
  background: var(--white);
}

/* --- Buttons ----------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: calc(var(--grid) * 2) calc(var(--grid) * 4);
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  transition: all var(--transition);
  min-width: 180px;
  text-align: center;
}
.btn--primary {
  background: var(--green);
  color: var(--white);
}
.btn--primary:hover {
  background: var(--green-dk);
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(45, 106, 79, 0.3);
}
.btn--outline {
  background: transparent;
  color: var(--green);
  border: 2px solid var(--green);
}
.btn--outline:hover {
  background: var(--green);
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(45, 106, 79, 0.3);
}
.btn-group {
  display: flex;
  gap: calc(var(--grid) * 2);
  flex-wrap: wrap;
  justify-content: center;
}

/* --- Cards ------------------------------------------------- */
.card {
  background: var(--white);
  border-radius: var(--radius);
  padding: calc(var(--grid) * 4);
  box-shadow: 0 1px 3px rgba(0,0,0,0.06), 0 4px 16px rgba(0,0,0,0.04);
  transition: transform var(--transition), box-shadow var(--transition);
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 32px rgba(0,0,0,0.08);
}
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: calc(var(--grid) * 4);
}

/* --- Stats Row --------------------------------------------- */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: calc(var(--grid) * 4);
  text-align: center;
}
.stat-number {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  color: var(--green);
  line-height: 1.1;
}
.stat-label {
  font-size: 0.9375rem;
  color: var(--ink-muted);
  margin-top: var(--grid);
}

/* --- Enterprise Features ----------------------------------- */
.feature-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: calc(var(--grid) * 3);
}
.feature-item {
  display: flex;
  align-items: center;
  gap: calc(var(--grid) * 2);
  font-size: 1.0625rem;
  font-weight: 500;
}
.feature-icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(45, 106, 79, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--green);
}

/* --- Navigation -------------------------------------------- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: calc(var(--grid) * 2) 0;
  transition: background var(--transition), box-shadow var(--transition);
}
.nav--scrolled {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 1px 3px rgba(0,0,0,0.06);
}
.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav__brand {
  display: flex;
  align-items: center;
  gap: var(--grid);
}
.nav__logo {
  width: 32px;
  height: 32px;
}
.nav__name {
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 2px;
  color: var(--green);
}
.nav__links {
  display: flex;
  align-items: center;
  gap: calc(var(--grid) * 3);
}
.nav__link {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--ink);
  transition: color var(--transition);
}
.nav__link:hover { color: var(--green); }

/* --- Hero -------------------------------------------------- */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: calc(var(--grid) * 16) calc(var(--grid) * 3) calc(var(--grid) * 12);
  position: relative;
}
.hero__mark {
  width: 80px;
  height: 80px;
  margin-bottom: calc(var(--grid) * 3);
}
.hero__title {
  font-size: 1.125rem;
  font-weight: 600;
  letter-spacing: 2px;
  color: var(--green);
  margin-bottom: calc(var(--grid) * 4);
}
.hero__tagline {
  margin-bottom: calc(var(--grid) * 2);
}
.hero__subtitle {
  font-size: 1.125rem;
  color: var(--ink-muted);
  margin-bottom: calc(var(--grid) * 5);
}
.hero__flow {
  margin-bottom: calc(var(--grid) * 6);
}
.hero__buttons {
  margin-top: calc(var(--grid) * 2);
}

/* --- Accordion (FAQ) --------------------------------------- */
.tabs {
  display: flex;
  gap: var(--grid);
  margin-bottom: calc(var(--grid) * 4);
  border-bottom: 2px solid var(--gray-lt);
}
.tab {
  padding: calc(var(--grid) * 1.5) calc(var(--grid) * 3);
  font-size: 1rem;
  font-weight: 600;
  color: var(--ink-muted);
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  transition: all var(--transition);
  cursor: pointer;
}
.tab--active {
  color: var(--green);
  border-bottom-color: var(--green);
}
.tab-panel { display: none; }
.tab-panel--active { display: block; }

.accordion-item {
  border-bottom: 1px solid var(--gray-lt);
}
.accordion-trigger {
  width: 100%;
  text-align: left;
  padding: calc(var(--grid) * 2.5) 0;
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--ink);
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: color var(--transition);
}
.accordion-trigger:hover { color: var(--green); }
.accordion-trigger::after {
  content: '+';
  font-size: 1.25rem;
  font-weight: 400;
  color: var(--ink-muted);
  transition: transform var(--transition);
  flex-shrink: 0;
  margin-left: var(--grid);
}
.accordion-item--open .accordion-trigger::after {
  transform: rotate(45deg);
}
.accordion-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.3s;
}
.accordion-item--open .accordion-body {
  max-height: 600px;
  padding-bottom: calc(var(--grid) * 3);
}
.accordion-content {
  display: flex;
  gap: calc(var(--grid) * 4);
  align-items: flex-start;
}
.accordion-text {
  flex: 1;
  color: var(--ink-muted);
  line-height: 1.7;
}
.accordion-animation {
  flex: 0 0 200px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* --- Page Header (inner pages) ----------------------------- */
.page-header {
  padding: calc(var(--grid) * 16) 0 calc(var(--grid) * 6);
  text-align: center;
}
.page-header__title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 600;
  color: var(--ink);
  margin-bottom: var(--grid);
}
.page-header__desc {
  font-size: 1.0625rem;
  color: var(--ink-muted);
  max-width: 600px;
  margin: 0 auto;
}

/* --- Legal Pages ------------------------------------------- */
.legal { padding-bottom: calc(var(--grid) * 12); }
.legal h2 {
  font-size: 1.25rem;
  font-weight: 600;
  margin: calc(var(--grid) * 4) 0 calc(var(--grid) * 1.5);
  color: var(--ink);
}
.legal h3 {
  font-size: 1.0625rem;
  font-weight: 600;
  margin: calc(var(--grid) * 3) 0 var(--grid);
  color: var(--ink);
}
.legal p, .legal li {
  color: var(--ink-muted);
  line-height: 1.7;
  margin-bottom: var(--grid);
}
.legal ul {
  padding-left: calc(var(--grid) * 3);
  list-style: disc;
}
.legal a { text-decoration: underline; }

/* --- Resources Page ---------------------------------------- */
.resource-section {
  margin-bottom: calc(var(--grid) * 5);
}
.resource-section h2 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: calc(var(--grid) * 2);
  padding-bottom: var(--grid);
  border-bottom: 1px solid var(--gray-lt);
}
.resource-list {
  display: flex;
  flex-direction: column;
  gap: calc(var(--grid) * 1.5);
}
.resource-link {
  display: flex;
  align-items: center;
  gap: calc(var(--grid) * 2);
  padding: calc(var(--grid) * 1.5) calc(var(--grid) * 2);
  border-radius: var(--radius-sm);
  transition: background var(--transition);
}
.resource-link:hover { background: var(--white); }
.resource-link__url {
  font-weight: 600;
  color: var(--green);
  min-width: 200px;
}
.resource-link__desc {
  color: var(--ink-muted);
}

/* --- Footer ------------------------------------------------ */
.footer {
  padding: calc(var(--grid) * 6) 0 calc(var(--grid) * 4);
  border-top: 1px solid var(--gray-lt);
  text-align: center;
}
.footer__mark {
  width: 32px;
  height: 32px;
  margin: 0 auto calc(var(--grid) * 2);
}
.footer__links {
  display: flex;
  justify-content: center;
  gap: calc(var(--grid) * 3);
  margin-bottom: calc(var(--grid) * 2);
}
.footer__link {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--ink-muted);
}
.footer__link:hover { color: var(--green); }
.footer__copy {
  font-size: 0.8125rem;
  color: var(--gray);
  margin-bottom: calc(var(--grid) * 0.5);
}
.footer__motto {
  font-size: 0.75rem;
  color: var(--gray);
  font-style: italic;
}

/* --- Scroll Reveal ----------------------------------------- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1), transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}
.reveal--visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }

/* --- Responsive -------------------------------------------- */
@media (max-width: 768px) {
  .hero { min-height: auto; padding-top: calc(var(--grid) * 14); }
  .section { padding: calc(var(--grid) * 8) 0; }
  .card-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-list { grid-template-columns: 1fr; }
  .nav__links { display: none; }
  .accordion-animation { display: none; }
  .resource-link { flex-direction: column; align-items: flex-start; gap: calc(var(--grid) * 0.5); }
  .resource-link__url { min-width: auto; }
  .btn-group { flex-direction: column; align-items: center; }
  .btn { width: 100%; max-width: 320px; }
}
@media (max-width: 480px) {
  .stats-grid { grid-template-columns: 1fr; }
  .container { padding: 0 calc(var(--grid) * 2); }
}
@media (min-width: 769px) and (max-width: 1024px) {
  .card-grid { grid-template-columns: repeat(2, 1fr); }
}