/* ========================================================================
   Beyond Limits Care Foundation — V2 Stylesheet
   Warm, nature-inspired, donation-optimized palette
   ======================================================================== */

/* ---------- CSS Custom Properties ---------- */
:root {
  /* Nature greens — trust, growth, healing */
  --sage: #2D6A4F;
  --sage-light: #40916C;
  --sage-pale: #E8F5EE;
  --sage-glow: rgba(45, 106, 79, 0.12);

  /* Brand teal from logo */
  --brand: #8dd0bc;
  --brand-deep: #6bb9a0;
  --brand-pale: #E6F5F0;

  /* Warm orange CTA — proven highest donation conversion */
  --cta: #E07A2F;
  --cta-hover: #D06820;
  --cta-glow: rgba(224, 122, 47, 0.2);
  --cta-pale: #FEF3E8;

  /* Warm neutrals */
  --bg: #FDFAF6;
  --bg-alt: #F7F3ED;
  --bg-card: #FFFFFF;
  --bg-dark: #1B2E28;
  --bg-dark-elevated: #243830;

  /* Text */
  --text: #1B1B1B;
  --text-secondary: #5A5A52;
  --text-muted: #8A8A7E;
  --text-on-dark: #F0EDE6;
  --text-on-dark-muted: #A8B5AE;

  /* Borders */
  --border: #E5E0D8;
  --border-hover: #D0C9BF;

  /* Tokens */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 40px;

  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease-smooth: cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

/* ---------- Reset & Base ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: 'DM Sans', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  overflow-x: hidden;
}

::selection {
  background: var(--brand);
  color: var(--bg-dark);
}

/* ---------- Typography ---------- */
h1, h2, h3, h4, h5 {
  font-family: 'Lora', serif;
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--text);
}

.font-accent {
  font-family: 'Lora', serif;
  font-style: italic;
}

/* ---------- Subtle Texture Overlay ---------- */
.texture-overlay {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.02;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 512 512' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='512' height='512' filter='url(%23n)' opacity='1'/%3E%3C/svg%3E");
  background-size: 256px;
}

/* ---------- Hero Backgrounds ---------- */
.bg-hero-light {
  background:
    radial-gradient(ellipse 80% 60% at 30% 20%, rgba(141, 208, 188, 0.15) 0%, transparent 60%),
    radial-gradient(ellipse 60% 70% at 80% 80%, rgba(224, 122, 47, 0.05) 0%, transparent 50%),
    var(--bg);
}

.bg-section-warm {
  background: var(--bg-alt);
}

.bg-section-green {
  background:
    radial-gradient(ellipse 80% 50% at 80% 20%, rgba(45, 106, 79, 0.04) 0%, transparent 60%),
    var(--bg);
}

.bg-dark-section {
  background:
    radial-gradient(ellipse 80% 60% at 20% 30%, rgba(141, 208, 188, 0.08) 0%, transparent 60%),
    var(--bg-dark);
  color: var(--text-on-dark);
}

.bg-dark-section h1, .bg-dark-section h2, .bg-dark-section h3, .bg-dark-section h4 {
  color: var(--text-on-dark);
}

/* ---------- Card ---------- */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: 0 1px 3px rgba(0,0,0,0.04), 0 4px 12px rgba(0,0,0,0.02);
  transition: transform 0.35s var(--ease-spring), box-shadow 0.35s var(--ease-smooth), border-color 0.3s;
}

.card:hover {
  transform: translateY(-4px);
  border-color: var(--brand);
  box-shadow: 0 8px 30px rgba(45, 106, 79, 0.08), 0 2px 8px rgba(0,0,0,0.04);
}

/* ---------- Buttons ---------- */
.btn-donate {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 16px 40px;
  background: linear-gradient(135deg, var(--cta) 0%, #CC6D28 100%);
  color: #FFFFFF;
  font-family: 'DM Sans', sans-serif;
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: 0.01em;
  border: none;
  border-radius: var(--radius-xl);
  cursor: pointer;
  text-decoration: none;
  box-shadow: 0 4px 16px var(--cta-glow), 0 1px 3px rgba(0,0,0,0.1);
  transform: translateY(0);
  transition: transform 0.3s var(--ease-spring), box-shadow 0.3s var(--ease-smooth);
}
.btn-donate:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(224, 122, 47, 0.3), 0 2px 6px rgba(0,0,0,0.1);
}
.btn-donate:active {
  transform: translateY(0);
}
.btn-donate:focus-visible {
  outline: 3px solid var(--cta);
  outline-offset: 3px;
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 36px;
  background: transparent;
  color: var(--sage);
  font-family: 'DM Sans', sans-serif;
  font-weight: 600;
  font-size: 0.95rem;
  border: 2px solid var(--sage);
  border-radius: var(--radius-xl);
  cursor: pointer;
  text-decoration: none;
  transform: translateY(0);
  transition: transform 0.3s var(--ease-spring), background 0.2s, color 0.2s;
}
.btn-secondary:hover {
  transform: translateY(-2px);
  background: var(--sage);
  color: #fff;
}
.btn-secondary:active { transform: translateY(0); }
.btn-secondary:focus-visible {
  outline: 3px solid var(--sage);
  outline-offset: 3px;
}

/* Dark section button variant */
.bg-dark-section .btn-secondary {
  color: var(--brand);
  border-color: var(--brand);
}
.bg-dark-section .btn-secondary:hover {
  background: var(--brand);
  color: var(--bg-dark);
}

/* ---------- Navigation ---------- */
.nav-main {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 16px 0;
  background: rgba(253, 250, 246, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: padding 0.3s var(--ease-smooth), border-color 0.3s, box-shadow 0.3s;
}
.nav-main.scrolled {
  padding: 10px 0;
  border-bottom-color: var(--border);
  box-shadow: 0 1px 8px rgba(0,0,0,0.04);
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  padding: 6px 0;
  position: relative;
  transition: color 0.2s;
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--sage);
  border-radius: 1px;
  transition: width 0.3s var(--ease-spring);
}
.nav-link:hover { color: var(--sage); }
.nav-link:hover::after { width: 100%; }
.nav-link:focus-visible {
  outline: 2px solid var(--sage);
  outline-offset: 4px;
  border-radius: 2px;
}

/* ---------- Stat Counter ---------- */
.stat-number {
  font-family: 'Lora', serif;
  font-size: 3rem;
  font-weight: 700;
  letter-spacing: -0.04em;
  color: var(--sage);
  line-height: 1;
}
.stat-divider {
  width: 40px;
  height: 2px;
  background: linear-gradient(90deg, var(--brand), transparent);
  margin: 10px 0;
}

/* ---------- Scroll Reveal ---------- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}
.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; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* ---------- Image Treatment ---------- */
.img-treatment {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-md);
}
.img-treatment img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease-smooth);
}
.img-treatment:hover img {
  transform: scale(1.03);
}
.img-treatment::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(27, 46, 40, 0.35) 0%, transparent 40%);
  pointer-events: none;
}

/* ---------- Form Inputs ---------- */
.form-input {
  width: 100%;
  padding: 14px 18px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-family: 'DM Sans', sans-serif;
  font-size: 0.95rem;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.form-input::placeholder {
  color: var(--text-muted);
}
.form-input:focus {
  border-color: var(--sage);
  box-shadow: 0 0 0 3px var(--sage-glow);
}
.form-input:hover:not(:focus) {
  border-color: var(--border-hover);
}

textarea.form-input {
  resize: vertical;
  min-height: 120px;
}

select.form-input {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1.5L6 6.5L11 1.5' stroke='%238A8A7E' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 40px;
}

/* ---------- Donation Amount Selector ---------- */
.amount-btn {
  padding: 12px 24px;
  background: var(--bg);
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-family: 'DM Sans', sans-serif;
  font-weight: 600;
  font-size: 1.1rem;
  cursor: pointer;
  transition: transform 0.2s var(--ease-spring), border-color 0.2s, background 0.2s, box-shadow 0.2s;
}
.amount-btn:hover {
  transform: translateY(-2px);
  border-color: var(--sage);
  background: var(--sage-pale);
}
.amount-btn.selected {
  border-color: var(--sage);
  background: var(--sage-pale);
  box-shadow: 0 0 16px var(--sage-glow);
  color: var(--sage);
}
.amount-btn:focus-visible {
  outline: 3px solid var(--sage);
  outline-offset: 3px;
}

/* ---------- Benefit Icon ---------- */
.benefit-icon {
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--sage-pale);
  margin: 0 auto 1rem;
}

/* ---------- Footer ---------- */
.footer-dark {
  background: var(--bg-dark);
  color: var(--text-on-dark);
}

/* ---------- Mobile Menu ---------- */
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 999;
  background: var(--bg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 28px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.35s var(--ease-smooth);
}
.mobile-menu.open {
  opacity: 1;
  pointer-events: auto;
}
.mobile-menu .nav-link {
  font-size: 1.4rem;
  font-family: 'Lora', serif;
  font-weight: 600;
  color: var(--text);
}

/* ---------- Hamburger ---------- */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  z-index: 1001;
}
.hamburger span {
  display: block;
  width: 26px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.3s var(--ease-spring), opacity 0.3s;
}
.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ---------- Sticky Donate Bar ---------- */
.sticky-donate {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 998;
  padding: 12px 20px;
  background: rgba(253, 250, 246, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-top: 1px solid var(--border);
  transform: translateY(100%);
  transition: transform 0.5s var(--ease-spring);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
}
.sticky-donate.visible {
  transform: translateY(0);
}

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
  .hamburger { display: flex; }
  .nav-links-desktop { display: none !important; }
  .stat-number { font-size: 2.2rem; }
  h1 { font-size: 2.2rem !important; }
  h2 { font-size: 1.8rem !important; }
}

@media (max-width: 480px) {
  h1 { font-size: 1.8rem !important; }
  .btn-donate { padding: 14px 28px; font-size: 0.9rem; }
}

/* ---------- Accessibility ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .reveal { opacity: 1; transform: none; }
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}