/* BHAI CHARITABLE TRUST — Emerald Green Theme & Modern NGO Tokens */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@500;600;700;800&family=Inter:wght@400;500;600;700&display=swap');

:root {
  /* Surface & Background Colors — Crisp Whitish-Gray Canvas */
  --color-bg: #F8FAFC;               /* Clean modern whitish-gray background */
  --color-bg-alt: #F1F5F9;           /* Secondary subtle cool-gray section background */
  --color-card-bg: #FFFFFF;          /* Pure crisp white card surface */
  
  /* Primary Brand Navy & Dark Palette */
  --color-navy: #0F172A;              /* Deep executive slate navy */
  --color-navy-light: #1E293B;        /* Slate navy */
  --color-navy-hover: #334155;        /* Royal navy hover */
  --color-navy-dark: #020617;         /* Deepest midnight slate */
  
  /* Rich Emerald Green Accents (Matching Social Welfare Theme) */
  --color-accent: #059669;            /* Rich vibrant emerald green */
  --color-accent-hover: #047857;      /* Deep forest green hover */
  --color-accent-soft: rgba(5, 150, 105, 0.08); /* Soft emerald tint */
  --color-gold: #D97706;              /* Gold accent */

  /* Text & Neutral Hierarchy */
  --color-text: #1E293B;             /* Primary charcoal text */
  --color-muted: #475569;            /* Secondary muted text */
  --color-light: #64748B;            /* Sub-label caption text */
  --color-border: #E2E8F0;           /* Clean border stroke */
  --color-border-hover: #CBD5E1;     /* Active border stroke */

  /* Elevation Shadows */
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.04), 0 1px 2px rgba(15, 23, 42, 0.02);
  --shadow-md: 0 4px 16px rgba(15, 23, 42, 0.06), 0 2px 4px rgba(15, 23, 42, 0.03);
  --shadow-hover: 0 10px 25px -5px rgba(15, 23, 42, 0.08), 0 8px 10px -6px rgba(15, 23, 42, 0.03);

  /* Typography */
  --font-heading: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --font-body: 'Inter', system-ui, -apple-system, sans-serif;

  /* Border Radii & Spacing */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --max-w: 1240px;
  --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  font-family: var(--font-body);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body { overflow-x: hidden; min-height: 100vh; }

/* — Typography — */
h1, h2, h3, h4 {
  font-family: var(--font-heading);
  color: var(--color-navy);
  line-height: 1.15;
  font-weight: 700;
  letter-spacing: -0.02em;
}

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

/* — Container — */
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 24px; }
@media (min-width: 768px) { .container { padding: 0 40px; } }
@media (min-width: 1024px) { .container { padding: 0 48px; } }

/* — Section Spacing — */
.section { padding: 90px 0; }
.section-lg { padding: 120px 0; }
@media (max-width: 767px) { .section { padding: 60px 0; } .section-lg { padding: 80px 0; } }

/* — Meta Sub-Label — */
.section-meta {
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 12px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.section-meta::before {
  content: '';
  display: inline-block;
  width: 14px; height: 2px;
  background: var(--color-accent);
}

/* — Cards with Subtle Borders & Soft Shadow — */
.card-clean {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}
.card-clean:hover {
  border-color: var(--color-border-hover);
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}

/* — Buttons — Emerald Green & Slate Navy — */
.btn-primary {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 14px 28px;
  background: var(--color-accent);
  color: #FFFFFF;
  font-family: var(--font-body);
  font-size: 0.875rem; font-weight: 600;
  border: none; border-radius: var(--radius-sm); cursor: pointer;
  box-shadow: 0 2px 10px rgba(5, 150, 105, 0.25);
  transition: var(--transition);
  line-height: 1;
}
.btn-primary:hover {
  background: var(--color-accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(5, 150, 105, 0.35);
}
.btn-primary svg, .btn-primary i { transition: transform 0.25s ease; }
.btn-primary:hover svg, .btn-primary:hover i { transform: translateX(3px); }

.btn-secondary {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 28px;
  background: transparent;
  color: var(--color-navy);
  font-family: var(--font-body);
  font-size: 0.875rem; font-weight: 600;
  border: 1.5px solid var(--color-border); border-radius: var(--radius-sm); cursor: pointer;
  transition: var(--transition);
  line-height: 1;
}
.btn-secondary:hover {
  border-color: var(--color-navy);
  color: var(--color-navy);
  background: #FFFFFF;
}

/* — Top Notice Bar — */
.top-notice-bar {
  background: var(--color-navy-dark);
  color: rgba(255, 255, 255, 0.85);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  padding: 9.5px 0;
  text-align: center;
}
.top-notice-bar strong { color: #FFFFFF; }

/* — Sticky Navbar — */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(248, 250, 252, 0.96);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow 0.3s ease;
}
.site-header.scrolled {
  box-shadow: 0 4px 20px rgba(15, 23, 42, 0.05);
}

/* — Form Inputs — */
.form-input {
  width: 100%; padding: 14px 16px;
  background: #FFFFFF; border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: var(--font-body); font-size: 0.875rem;
  color: var(--color-text);
  transition: border-color 0.2s ease;
}
.form-input:focus { outline: none; border-color: var(--color-accent); }
.form-label {
  display: block; font-size: 0.75rem; font-weight: 700;
  color: var(--color-muted); letter-spacing: 0.06em;
  text-transform: uppercase; margin-bottom: 6px;
}

/* — Toast Notification — */
.toast-notification {
  position: fixed; bottom: 32px; left: 50%; transform: translateX(-50%) translateY(100px);
  background: var(--color-navy); color: #FFFFFF;
  padding: 14px 28px; border-radius: var(--radius-md);
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.15);
  font-size: 0.875rem; font-weight: 500; z-index: 10000;
  opacity: 0; transition: transform 0.35s ease, opacity 0.35s ease;
  display: flex; align-items: center; gap: 10px;
}
.toast-notification.active {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

/* — Floating WhatsApp — */
.wa-float {
  position: fixed; bottom: 28px; right: 28px; z-index: 90;
  width: 50px; height: 50px; border-radius: 50%;
  background: #25D366; color: #FFFFFF;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 4px 16px rgba(37, 211, 102, 0.3);
  transition: transform 0.25s ease;
}
.wa-float:hover { transform: scale(1.08); }