/* ============================================================
   global.css — charitablegiving.ca Design System
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400;0,700;1,700&family=DM+Sans:wght@300;400;500;600&family=DM+Mono:wght@400&display=swap');

/* ── Custom Properties ── */
:root {
  --color-navy: #1B2F6E;
  --color-navy-dark: #111E4A;
  --color-navy-light: #2D4494;
  --color-teal: #2A9D8F;
  --color-teal-light: #4DC4B8;
  --color-teal-pale: #E6F5F4;
  --color-green: #5BAD4E;
  --color-green-light: #82C977;
  --color-green-pale: #EDF7EB;
  --color-cream: #FAF7F2;
  --color-linen: #F0F4F8;
  --color-ink: #1A1A1A;
  --color-muted: #6B7280;
  --color-white: #FFFFFF;
  --color-border: #D1DCE8;
  --color-success: #3A9B30;
  --color-error: #9B2226;
  --font-display: 'Playfair Display', Georgia, serif;
  --font-body: 'DM Sans', system-ui, sans-serif;
  --font-mono: 'DM Mono', monospace;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.10);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.12);
  --transition: 0.25s ease;
  --max-width: 1200px;
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-body);
  color: var(--color-ink);
  background: var(--color-white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
body.menu-open { overflow: hidden; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
input, textarea, select { font-family: inherit; }

/* ── Typography ── */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  line-height: 1.2;
  color: var(--color-ink);
}
h1 { font-size: clamp(2rem, 5vw, 3.5rem); font-weight: 700; }
h2 { font-size: clamp(1.5rem, 3vw, 2.25rem); font-weight: 700; }
h3 { font-size: clamp(1.2rem, 2.5vw, 1.5rem); font-weight: 700; }
h4 { font-size: 1.1rem; font-weight: 700; }
p { line-height: 1.75; }
.text-muted { color: var(--color-muted); }
.text-green { color: var(--color-green); }
.text-teal { color: var(--color-teal); }
.text-white { color: var(--color-white); }
.text-navy { color: var(--color-navy); }
.italic { font-style: italic; }

/* ── Layout ── */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}
.section-padding { padding: 80px 0; }
@media (max-width: 768px) { .section-padding { padding: 56px 0; } }

/* ── Navigation ── */
.site-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: transparent;
  transition: background var(--transition), box-shadow var(--transition);
}
.site-nav.scrolled {
  background: var(--color-white);
  box-shadow: var(--shadow-md);
}
.site-nav.scrolled .nav-links a,
.site-nav.scrolled .nav-logo-text {
  color: var(--color-navy);
}
.nav-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  height: 88px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.nav-logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}
.nav-logo img {
  height: 72px;
  width: auto;
  display: block;
  /* White version on dark nav — logo colours show on light nav */
  filter: brightness(0) invert(1);
  transition: filter var(--transition), height var(--transition);
}
.site-nav.scrolled .nav-logo img {
  filter: none;
  height: 64px;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav-links a {
  font-size: 0.925rem;
  font-weight: 500;
  color: var(--color-white);
  transition: color var(--transition);
  position: relative;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0; right: 0;
  height: 2px;
  background: var(--color-green);
  transform: scaleX(0);
  transition: transform var(--transition);
}
.nav-links a:hover::after,
.nav-links a.active::after { transform: scaleX(1); }
.nav-links a:hover { color: var(--color-green-light); }
.nav-links a.active { color: var(--color-green); }
.site-nav.scrolled .nav-links a { color: var(--color-navy); }
.site-nav.scrolled .nav-links a:hover { color: var(--color-teal); }
.site-nav.scrolled .nav-links a.active { color: var(--color-teal); }
.nav-cta { margin-left: 8px; }
.nav-hamburger {
  display: none;
  align-items: center;
  justify-content: center;
  width: 44px; height: 44px;
  border-radius: var(--radius-sm);
  color: var(--color-white);
  transition: background var(--transition);
}
.nav-hamburger:hover { background: rgba(255,255,255,0.15); }
.site-nav.scrolled .nav-hamburger { color: var(--color-navy); }
.site-nav.scrolled .nav-hamburger:hover { background: var(--color-linen); }

/* Mobile Nav Overlay */
.nav-mobile {
  position: fixed;
  inset: 0;
  background: var(--color-navy-dark);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 32px;
  transform: translateX(100%);
  transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 999;
}
.nav-mobile.open { transform: translateX(0); }
.nav-mobile-close {
  position: absolute;
  top: 20px; right: 20px;
  width: 44px; height: 44px;
  display: flex; align-items: center; justify-content: center;
  color: var(--color-white);
  border-radius: var(--radius-sm);
  transition: background var(--transition);
}
.nav-mobile-close:hover { background: rgba(255,255,255,0.1); }
.nav-mobile-links {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
}
.nav-mobile-links a {
  font-size: 1.5rem;
  font-weight: 500;
  color: var(--color-white);
  transition: color var(--transition);
}
.nav-mobile-links a:hover,
.nav-mobile-links a.active { color: var(--color-green-light); }

@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-cta { display: none; }
  .nav-hamburger { display: flex; }
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  transition: background var(--transition), color var(--transition), transform var(--transition), box-shadow var(--transition);
  cursor: pointer;
  border: 2px solid transparent;
  line-height: 1;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); box-shadow: var(--shadow-md); }
.btn:active { transform: translateY(0); }
.btn-primary {
  background: var(--color-green);
  color: var(--color-white);
  border-color: var(--color-green);
}
.btn-primary:hover { background: var(--color-green-light); border-color: var(--color-green-light); }
.btn-secondary {
  background: var(--color-teal);
  color: var(--color-white);
  border-color: var(--color-teal);
}
.btn-secondary:hover { background: var(--color-teal-light); border-color: var(--color-teal-light); }
.btn-outline {
  background: transparent;
  color: var(--color-navy);
  border-color: var(--color-navy);
}
.btn-outline:hover { background: var(--color-navy); color: var(--color-white); }
.btn-outline-white {
  background: transparent;
  color: var(--color-white);
  border-color: var(--color-white);
}
.btn-outline-white:hover { background: var(--color-white); color: var(--color-navy); }
.btn-ghost {
  background: transparent;
  color: var(--color-teal);
  border-color: transparent;
  padding-left: 0; padding-right: 0;
}
.btn-ghost:hover { color: var(--color-teal-light); box-shadow: none; transform: none; }
.btn-sm { padding: 8px 18px; font-size: 0.85rem; }
.btn-lg { padding: 16px 40px; font-size: 1.05rem; }

/* ── Cards ── */
.card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  transition: transform var(--transition), box-shadow var(--transition);
  overflow: hidden;
}
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); }
.card-body { padding: 24px; }
.card-header { padding: 24px 24px 0; }
.card-footer { padding: 0 24px 24px; }

/* ── Badges ── */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 600;
  font-family: var(--font-body);
  letter-spacing: 0.02em;
  text-transform: uppercase;
}
.badge-navy { background: var(--color-navy); color: var(--color-white); }
.badge-teal { background: var(--color-teal-pale); color: var(--color-teal); }
.badge-green { background: var(--color-green-pale); color: var(--color-success); }
.badge-muted { background: var(--color-linen); color: var(--color-muted); }
.badge-advanced { background: var(--color-navy); color: var(--color-white); }
.badge-intermediate { background: var(--color-teal-pale); color: var(--color-teal); }
.badge-beginner { background: var(--color-green-pale); color: var(--color-success); }

/* ── Forms ── */
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-ink);
}
.form-control {
  padding: 12px 16px;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--color-ink);
  background: var(--color-white);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
  width: 100%;
}
.form-control:focus {
  border-color: var(--color-teal);
  box-shadow: 0 0 0 3px rgba(42,157,143,0.15);
}
.form-control::placeholder { color: var(--color-muted); }
textarea.form-control { resize: vertical; min-height: 120px; }
select.form-control { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%236B7280' stroke-width='2' fill='none' stroke-linecap='round'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 16px center; padding-right: 44px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 600px) { .form-row { grid-template-columns: 1fr; } }
.form-hint { font-size: 0.8rem; color: var(--color-muted); }
.form-error { font-size: 0.8rem; color: var(--color-error); }
.form-success {
  background: var(--color-green-pale);
  border: 1px solid var(--color-green);
  color: var(--color-success);
  padding: 16px 20px;
  border-radius: var(--radius-md);
  font-weight: 500;
  display: none;
}
.form-success.visible { display: block; }

/* ── Wave Divider ── */
.wave-divider {
  display: block;
  width: 100%;
  overflow: hidden;
  line-height: 0;
  margin: -1px 0;
}
.wave-divider svg { display: block; width: 100%; }

/* ── Scroll Animations ── */
.fade-in { opacity: 0; transition: opacity 0.6s ease; }
.fade-in.visible { opacity: 1; }
.slide-up { opacity: 0; transform: translateY(24px); transition: opacity 0.6s ease, transform 0.6s ease; }
.slide-up.visible { opacity: 1; transform: translateY(0); }
.slide-up:nth-child(2) { transition-delay: 0.1s; }
.slide-up:nth-child(3) { transition-delay: 0.2s; }
.slide-up:nth-child(4) { transition-delay: 0.3s; }

/* ── FAQ Accordion ── */
.accordion-item {
  border-bottom: 1px solid var(--color-border);
}
.accordion-trigger {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 0;
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-ink);
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  gap: 16px;
  transition: color var(--transition);
}
.accordion-trigger:hover { color: var(--color-teal); }
.accordion-icon {
  flex-shrink: 0;
  width: 24px; height: 24px;
  display: flex; align-items: center; justify-content: center;
  color: var(--color-teal);
  transition: transform var(--transition);
}
.accordion-item.open .accordion-icon { transform: rotate(180deg); }
.accordion-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding var(--transition);
}
.accordion-item.open .accordion-content { max-height: 800px; }
.accordion-content-inner { padding-bottom: 20px; color: var(--color-muted); line-height: 1.75; }

/* ── Section Headers ── */
.section-header { margin-bottom: 48px; }
.section-header .section-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-teal);
  margin-bottom: 8px;
}
.section-header h2 { margin-bottom: 16px; }
.section-header p { color: var(--color-muted); max-width: 600px; font-size: 1.05rem; }

/* ── CRA Number ── */
.cra-number {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-muted);
  letter-spacing: 0.05em;
}

/* ── Footer ── */
.site-footer {
  background: var(--color-navy-dark);
  color: var(--color-white);
  padding-top: 64px;
}
.footer-top {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 64px;
  padding-bottom: 48px;
}
.footer-brand { display: flex; flex-direction: column; gap: 16px; }
.footer-logo {
  height: 80px;
  width: auto;
  display: block;
  filter: brightness(0) invert(1);
}
.footer-tagline {
  color: rgba(255,255,255,0.65);
  font-size: 0.95rem;
  line-height: 1.6;
}
.footer-nav-columns {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}
.footer-col h4 {
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-teal-light);
  margin-bottom: 16px;
}
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col a {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.65);
  transition: color var(--transition);
}
.footer-col a:hover { color: var(--color-white); }
.footer-divider {
  height: 1px;
  background: rgba(255,255,255,0.12);
  margin: 0 0 24px;
}
.footer-disclaimer {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.45);
  line-height: 1.65;
  padding-bottom: 20px;
}
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 0;
  border-top: 1px solid rgba(255,255,255,0.08);
  font-size: 0.85rem;
  color: rgba(255,255,255,0.45);
}
.footer-bottom a { transition: color var(--transition); }
.footer-bottom a:hover { color: var(--color-white); }
.footer-maple { font-size: 0.85rem; }

@media (max-width: 1024px) {
  .footer-top { grid-template-columns: 1fr; gap: 32px; }
  .footer-nav-columns { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
  .footer-nav-columns { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
}

/* ── Utility grids ── */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
@media (max-width: 1024px) { .grid-4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 768px) {
  .grid-3 { grid-template-columns: 1fr; }
  .grid-2 { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: 1fr; }
}

/* ── Scroll padding for fixed nav ── */
html { scroll-padding-top: 80px; }

/* ── Disclaimer box ── */
.disclaimer-box {
  background: var(--color-linen);
  border-left: 4px solid var(--color-teal);
  padding: 16px 20px;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-size: 0.85rem;
  color: var(--color-muted);
  line-height: 1.65;
}

/* ── Callouts ── */
.callout-tip {
  background: var(--color-green-pale);
  border-left: 4px solid var(--color-green);
  padding: 16px 20px;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin: 24px 0;
}
.callout-warning {
  background: var(--color-linen);
  border-left: 4px solid var(--color-teal);
  padding: 16px 20px;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin: 24px 0;
}