/* =========================================================
   Canadian Network for Complex Systems (CNCS)
   ========================================================= */

:root {
  /* Palette — cool, scientific, Canadian */
  --bg: #f7f8fa;
  --bg-card: #ffffff;
  --bg-subtle: #eef1f5;
  --bg-dark: #0a2540;
  --bg-dark-soft: #123559;

  --text: #0a2540;
  --text-secondary: #344456;
  --text-muted: #6b7a8c;
  --text-inverse: #f7f8fa;

  --border: #dde3ea;
  --border-strong: #c6cfd9;

  --accent: #2c7a7b;         /* teal — depth */
  --accent-hover: #226364;
  --accent-subtle: #e6f2f2;
  --accent-warm: #c05621;    /* muted amber — rare emphasis */

  --radius: 10px;
  --radius-lg: 14px;
  --shadow-sm: 0 1px 2px rgba(10, 37, 64, 0.04), 0 1px 3px rgba(10, 37, 64, 0.06);
  --shadow-md: 0 4px 6px rgba(10, 37, 64, 0.04), 0 10px 24px rgba(10, 37, 64, 0.08);
  --shadow-lg: 0 20px 60px rgba(10, 37, 64, 0.12);

  --transition: all 0.3s cubic-bezier(0.25, 0.1, 0.25, 1);

  --container: 1200px;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

/* Typography */
h1, h2, h3, h4 {
  font-family: 'Source Serif 4', 'New York', Georgia, serif;
  color: var(--text);
  font-weight: 500;
  letter-spacing: -0.01em;
  margin: 0 0 0.75rem;
  line-height: 1.2;
}
h1 { font-size: clamp(2.25rem, 4.5vw, 3.5rem); font-weight: 400; letter-spacing: -0.02em; }
h2 { font-size: clamp(1.75rem, 3vw, 2.5rem); font-weight: 400; }
h3 { font-size: 1.375rem; font-weight: 500; }
h4 { font-size: 1.125rem; font-weight: 600; }

p {
  color: var(--text-secondary);
  margin: 0 0 1rem;
}

a { color: var(--accent); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--accent-hover); }

strong { color: var(--text); font-weight: 600; }

em { font-family: 'Source Serif 4', Georgia, serif; font-style: italic; }

.label {
  font-family: 'JetBrains Mono', 'SF Mono', Menlo, monospace;
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
  margin: 0 0 1rem;
  display: block;
}

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

/* ================= Navigation ================= */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(247, 248, 250, 0.85);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
  gap: 2rem;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--text);
  font-family: 'Source Serif 4', Georgia, serif;
  font-weight: 500;
  font-size: 1.0625rem;
  letter-spacing: -0.01em;
}

.nav-logo-img {
  height: 40px;
  width: 40px;
  object-fit: contain;
}

.nav-logo-text { line-height: 1.1; }
.nav-logo-text small {
  display: block;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.625rem;
  font-weight: 400;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-top: 2px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-link {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  font-weight: 500;
  text-decoration: none;
  position: relative;
  padding: 0.25rem 0;
}
.nav-link:hover { color: var(--text); }
.nav-link.active {
  color: var(--accent);
}
.nav-link.active::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: -4px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
}

.nav-mobile-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.5rem;
  cursor: pointer;
  color: var(--text);
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-mobile-toggle { display: flex; align-items: center; justify-content: center; }
  .nav-links.open {
    display: flex;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    background: var(--bg-card);
    border-bottom: 1px solid var(--border);
    padding: 1rem 1.5rem;
    box-shadow: var(--shadow-md);
  }
  .nav-links.open .nav-link {
    width: 100%;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border);
  }
  .nav-links.open .nav-link:last-child { border-bottom: none; }
}

/* ================= Buttons ================= */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  font-family: 'Inter', sans-serif;
  font-size: 0.9375rem;
  font-weight: 500;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: var(--transition);
}
.btn-primary {
  background: var(--bg-dark);
  color: var(--text-inverse);
  border-color: var(--bg-dark);
}
.btn-primary:hover {
  background: var(--bg-dark-soft);
  color: var(--text-inverse);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}
.btn-secondary {
  background: transparent;
  color: var(--text);
  border-color: var(--border-strong);
}
.btn-secondary:hover {
  background: var(--bg-card);
  border-color: var(--text);
  transform: translateY(-1px);
}

/* ================= Hero ================= */
.hero {
  position: relative;
  padding: 5rem 0 4.5rem;
  overflow: hidden;
  border-bottom: 1px solid var(--border);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 3rem;
  align-items: center;
}

.hero-content { position: relative; z-index: 2; }
.hero-eyebrow {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--accent);
  margin-bottom: 1.25rem;
}
.hero-title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  line-height: 1.08;
  letter-spacing: -0.025em;
  font-weight: 400;
  margin: 0 0 1.25rem;
}
.hero-title em {
  color: var(--accent);
  font-style: italic;
}
.hero-description {
  font-size: 1.125rem;
  line-height: 1.6;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  max-width: 34rem;
}
.hero-actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

/* Hero logo — animated network leaf */
.hero-logo {
  position: relative;
  aspect-ratio: 1 / 1;
  max-width: 500px;
  width: 100%;
  margin-left: auto;
}
.hero-logo-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  animation: logo-breathe 7s ease-in-out infinite;
}
@keyframes logo-breathe {
  0%, 100% {
    filter: drop-shadow(0 0 18px rgba(192, 86, 33, 0.12))
            drop-shadow(0 0 2px rgba(44, 122, 123, 0.08));
  }
  50% {
    filter: drop-shadow(0 0 34px rgba(192, 86, 33, 0.32))
            drop-shadow(0 0 6px rgba(44, 122, 123, 0.18));
  }
}

/* Signal pulse dots — positioned over key node locations in the leaf */
.hero-logo-pulse {
  position: absolute;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent-warm);
  transform: translate(-50%, -50%) scale(0.5);
  opacity: 0;
  pointer-events: none;
  box-shadow:
    0 0 0 2px rgba(192, 86, 33, 0.25),
    0 0 16px 4px rgba(192, 86, 33, 0.55);
  animation: logo-pulse 5s ease-in-out infinite;
}
@keyframes logo-pulse {
  0%, 100% { opacity: 0;    transform: translate(-50%, -50%) scale(0.5); }
  20%      { opacity: 0.95; transform: translate(-50%, -50%) scale(1.3); }
  60%      { opacity: 0;    transform: translate(-50%, -50%) scale(2.2); }
}
/* Ripple ring on the center node */
.hero-logo-core {
  position: absolute;
  left: 50%; top: 52%;
  width: 22px; height: 22px;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
  box-shadow: 0 0 0 0 rgba(192, 86, 33, 0.55);
  animation: logo-core 5s ease-out infinite;
}
@keyframes logo-core {
  0%   { box-shadow: 0 0 0 0   rgba(192, 86, 33, 0.55); }
  70%  { box-shadow: 0 0 0 48px rgba(192, 86, 33, 0);   }
  100% { box-shadow: 0 0 0 0   rgba(192, 86, 33, 0);   }
}

@media (max-width: 880px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-logo { max-width: 360px; margin: 0 auto; }
  .hero-logo-pulse { width: 11px; height: 11px; }
}

/* ================= Section ================= */
.section {
  padding: 5rem 0;
}
.section.bg-white { background: var(--bg-card); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.section.bg-dark  { background: var(--bg-dark); color: var(--text-inverse); }
.section.bg-dark h1, .section.bg-dark h2, .section.bg-dark h3 { color: var(--text-inverse); }
.section.bg-dark p { color: rgba(247, 248, 250, 0.82); }
.section.bg-dark .label { color: #5eb6b7; }

.section-header {
  max-width: 40rem;
  margin: 0 auto 3rem;
  text-align: center;
}
.section-header.left { text-align: left; margin-left: 0; }
.section-header h2 { margin-bottom: 0.5rem; }
.section-header p { font-size: 1.0625rem; color: var(--text-muted); }

/* ================= Content Grid (prose w/ sidebar label) ================= */
.content-grid {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 3rem;
  max-width: 960px;
  margin: 0 auto;
}
.content-body > *:first-child { margin-top: 0; }
.content-body p { font-size: 1.0625rem; line-height: 1.7; }
.content-body h3 { margin-top: 0; margin-bottom: 1rem; font-size: 1.625rem; font-family: 'Source Serif 4', Georgia, serif; font-weight: 400; }
.content-body h4 { margin-top: 2rem; margin-bottom: 0.75rem; }
.content-sidebar .label { margin-bottom: 0; }

@media (max-width: 768px) {
  .content-grid { grid-template-columns: 1fr; gap: 1rem; }
}

/* ================= Capability cards ================= */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.card::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}
.card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--border-strong);
}
.card:hover::before { transform: scaleX(1); }

.card-num {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 0.1em;
  margin-bottom: 0.75rem;
  display: block;
}
.card h3 {
  font-size: 1.1875rem;
  margin-bottom: 0.5rem;
  font-family: 'Source Serif 4', Georgia, serif;
  font-weight: 500;
}
.card p {
  font-size: 0.9375rem;
  margin-bottom: 0;
  color: var(--text-muted);
  line-height: 1.6;
}

/* Checklist (for Why Now / Get Involved bullets) */
.checklist {
  list-style: none;
  padding: 0;
  margin: 0 0 1.5rem;
  display: grid;
  gap: 0.75rem;
}
.checklist li {
  position: relative;
  padding-left: 1.75rem;
  color: var(--text-secondary);
  line-height: 1.55;
}
.checklist li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-subtle);
}
.section.bg-dark .checklist li { color: rgba(247, 248, 250, 0.85); }
.section.bg-dark .checklist li::before { box-shadow: 0 0 0 3px rgba(44, 122, 123, 0.2); }

/* Questions list (About > Our Approach) */
.questions {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 1.25rem;
  counter-reset: q;
}
.questions li {
  counter-increment: q;
  padding: 1.25rem 1.5rem 1.25rem 3.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  position: relative;
  font-family: 'Source Serif 4', Georgia, serif;
  font-style: italic;
  font-size: 1.125rem;
  color: var(--text);
  line-height: 1.5;
}
.questions li::before {
  content: counter(q, decimal-leading-zero);
  position: absolute;
  left: 1.25rem;
  top: 1.25rem;
  font-family: 'JetBrains Mono', monospace;
  font-style: normal;
  font-size: 0.6875rem;
  color: var(--accent);
  letter-spacing: 0.1em;
}

/* ================= CTA Section ================= */
.cta {
  padding: 5rem 0;
  background: var(--bg-dark);
  color: var(--text-inverse);
  text-align: center;
  border-top: 1px solid var(--border);
}
.cta h2 { color: var(--text-inverse); margin-bottom: 1rem; }
.cta p { color: rgba(247, 248, 250, 0.78); max-width: 36rem; margin: 0 auto 2rem; font-size: 1.0625rem; }
.cta .btn-primary {
  background: var(--accent);
  border-color: var(--accent);
}
.cta .btn-primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); }
.cta .btn-secondary {
  background: transparent;
  color: var(--text-inverse);
  border-color: rgba(247, 248, 250, 0.3);
}
.cta .btn-secondary:hover {
  background: rgba(247, 248, 250, 0.08);
  border-color: var(--text-inverse);
}

/* ================= Footer ================= */
.footer {
  padding: 3.5rem 0 2rem;
  background: var(--bg-card);
  border-top: 1px solid var(--border);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 2.5rem;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
}
.footer-brand img { height: 38px; width: 38px; object-fit: contain; }
.footer-brand-text {
  font-family: 'Source Serif 4', Georgia, serif;
  font-size: 1rem;
  font-weight: 500;
}
.footer-about {
  font-size: 0.9375rem;
  color: var(--text-muted);
  max-width: 24rem;
  line-height: 1.6;
}
.footer-heading {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text);
  margin: 0 0 1rem;
  font-weight: 600;
}
.footer-link {
  display: block;
  font-size: 0.9375rem;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
  text-decoration: none;
}
.footer-link:hover { color: var(--accent); }
.footer-acknowledgment {
  padding: 1.5rem 0;
  border-top: 1px solid var(--border);
  font-size: 0.8125rem;
  color: var(--text-muted);
  line-height: 1.6;
  max-width: 56rem;
}
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border);
  font-size: 0.8125rem;
  color: var(--text-muted);
}
.footer-bottom p { margin: 0; }

@media (max-width: 768px) {
  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
  .footer-bottom { flex-direction: column; gap: 0.5rem; text-align: center; }
}

/* ================= Page Hero (for non-home pages) ================= */
.page-hero {
  padding: 4rem 0 3rem;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}
.page-hero-inner { max-width: 48rem; }
.page-hero h1 {
  font-size: clamp(2.25rem, 4vw, 3.25rem);
  margin-bottom: 1rem;
  line-height: 1.1;
}
.page-hero p {
  font-size: 1.125rem;
  color: var(--text-secondary);
  line-height: 1.65;
  max-width: 38rem;
}

/* ================= Contact box ================= */
.contact-box {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  max-width: 38rem;
  margin: 0 auto;
  text-align: center;
}
.contact-box h3 {
  font-family: 'Source Serif 4', Georgia, serif;
  font-weight: 400;
  font-size: 1.5rem;
  margin-bottom: 1rem;
}
.contact-box .email-link {
  display: inline-block;
  font-family: 'JetBrains Mono', monospace;
  font-size: 1rem;
  padding: 0.875rem 1.5rem;
  background: var(--bg-subtle);
  border-radius: 8px;
  margin-top: 0.75rem;
  color: var(--text);
  border: 1px solid var(--border);
  transition: var(--transition);
}
.contact-box .email-link:hover {
  background: var(--accent-subtle);
  border-color: var(--accent);
  color: var(--accent);
}

/* ================= Forms ================= */
.form {
  max-width: 40rem;
  margin: 0 auto;
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}
.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
  margin-bottom: 1.25rem;
}
.form-label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text);
}
.form-label .optional {
  font-weight: 400;
  color: var(--text-muted);
  font-size: 0.8125rem;
}
.form-input,
.form-select,
.form-textarea {
  font-family: 'Inter', sans-serif;
  font-size: 0.9375rem;
  color: var(--text);
  padding: 0.75rem 1rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg-card);
  transition: border-color 0.2s, box-shadow 0.2s;
  outline: none;
  width: 100%;
}
.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-subtle);
}
.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--text-muted);
  opacity: 0.7;
}
.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' fill='none' stroke='%236b7a8c' stroke-width='1.5'%3E%3Cpath d='M1 1.5l5 5 5-5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.5rem;
  cursor: pointer;
}
.form-textarea {
  resize: vertical;
  min-height: 7rem;
  line-height: 1.6;
}
.form-submit {
  margin-top: 0.5rem;
}

/* Success page */
.success-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--accent-subtle);
  color: var(--accent);
  margin-bottom: 1.25rem;
}

@media (max-width: 600px) {
  .form-row { grid-template-columns: 1fr; }
}