/* ============================================
   PRODUCTIVE LOGIC — Design System
   Palette: Modern Warm
   ============================================ */

:root {
  --ink:        #1C1A18;
  --warm-dark:  #2E2A25;
  --slate:      #5C5650;
  --mid:        #9A8F85;
  --rule:       #DDD8D2;
  --warm-bg:    #F7F4F0;
  --white:      #FFFFFF;
  --accent:     #2E6B5E;   /* deep teal — confident, international */
  --accent-lt:  #3D8C7C;
  --gold:       #B8923A;   /* warm credential marker */
  --gold-lt:    #F0E6D0;
}

/* ---- Reset ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }

/* ---- Typography ---- */
@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,400;0,500;0,600;1,400;1,500&family=Inter:wght@300;400;500;600&display=swap');

body {
  font-family: 'Inter', sans-serif;
  font-weight: 400;
  font-size: 1rem;
  line-height: 1.7;
  color: var(--ink);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: 'Cormorant Garamond', serif;
  font-weight: 500;
  line-height: 1.15;
  letter-spacing: -0.01em;
}

h1 { font-size: clamp(2.4rem, 5vw, 4rem); }
h2 { font-size: clamp(1.8rem, 3.5vw, 2.8rem); }
h3 { font-size: clamp(1.3rem, 2.5vw, 1.8rem); }
h4 { font-size: 1.2rem; }

p { color: var(--slate); max-width: 68ch; }

/* ---- Layout ---- */
.container {
  width: 90%;
  max-width: 1120px;
  margin: 0 auto;
}

section { padding: 6rem 0; }
section:first-of-type { padding-top: 0; }

.section-label {
  font-family: 'Inter', sans-serif;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold);
  display: block;
  margin-bottom: 1.2rem;
}

/* ---- Navigation ---- */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--rule);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  width: 90%;
  max-width: 1120px;
  margin: 0 auto;
}

.nav-logo {
  font-family: 'Cormorant Garamond', serif;
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: 0.01em;
}

.nav-logo span {
  color: var(--accent);
}

.nav-links {
  display: flex;
  gap: 2.5rem;
  list-style: none;
}

.nav-links a {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--slate);
  letter-spacing: 0.04em;
  transition: color 0.2s;
}

.nav-links a:hover,
.nav-links a.active { color: var(--accent); }

.nav-cta {
  background: var(--accent);
  color: var(--white) !important;
  padding: 0.55rem 1.3rem;
  border-radius: 3px;
  font-size: 0.82rem !important;
  font-weight: 600 !important;
  letter-spacing: 0.06em !important;
  transition: background 0.2s !important;
}

.nav-cta:hover { background: var(--accent-lt) !important; color: var(--white) !important; }

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--ink);
  transition: all 0.3s;
}

/* ---- Buttons ---- */
.btn {
  display: inline-block;
  padding: 0.85rem 2rem;
  font-family: 'Inter', sans-serif;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border-radius: 3px;
  transition: all 0.22s;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--accent);
  color: var(--white);
}
.btn-primary:hover { background: var(--accent-lt); }

.btn-outline {
  background: transparent;
  color: var(--accent);
  border: 1.5px solid var(--accent);
}
.btn-outline:hover {
  background: var(--accent);
  color: var(--white);
}

/* ---- Dividers ---- */
.rule { border: none; border-top: 1px solid var(--rule); margin: 0; }

/* ---- Footer ---- */
footer {
  background: var(--warm-dark);
  color: var(--mid);
  padding: 3rem 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.footer-logo {
  font-family: 'Cormorant Garamond', serif;
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--white);
}

.footer-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.footer-links a {
  font-size: 0.82rem;
  color: var(--mid);
  transition: color 0.2s;
}
.footer-links a:hover { color: var(--white); }

.footer-copy {
  font-size: 0.78rem;
  color: var(--mid);
  width: 100%;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255,255,255,0.08);
  margin-top: 1rem;
}

/* ---- Page wrapper (offset fixed nav) ---- */
.page-body { padding-top: 68px; }

/* ---- Responsive ---- */
@media (max-width: 768px) {
  section { padding: 4rem 0; }

  .nav-links { display: none; flex-direction: column; gap: 0; }
  .nav-links.open {
    display: flex;
    position: absolute;
    top: 68px; left: 0; right: 0;
    background: var(--white);
    border-bottom: 1px solid var(--rule);
    padding: 1rem 0;
  }
  .nav-links.open li a {
    display: block;
    padding: 0.75rem 5%;
    font-size: 1rem;
  }
  .nav-toggle { display: flex; }

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