/* ============================================================
   HPAHF Website — Main Stylesheet
   ============================================================
   This file controls the look and feel of every page.
   It is organized into sections (marked with === headers)
   so you can quickly find what you want to change.

   COLOR PALETTE (forest/earth theme):
     --green-dark   : deep forest canopy
     --green-mid    : mid-tone foliage
     --green-light  : fresh sage / highlight
     --earth-brown  : rich soil / bark
     --earth-tan    : warm sandstone
     --cream        : off-white background
     --text-dark    : near-black body text
     --text-mid     : secondary/muted text
   ============================================================ */

/* ============================================================
   1. CSS CUSTOM PROPERTIES (variables)
      Change a value here and it updates everywhere on the site.
   ============================================================ */
:root {
  /* Colors — botanical palette */
  --green-dark:   #3D2B1F;   /* primary dark: nav, hero, footer */
  --green-mid:    #6B8C3E;   /* accent green: buttons, links, icons */
  --green-light:  #8AAF52;   /* lighter green: card icons, highlights */
  --earth-brown:  #E8735A;   /* accent coral: donate button, tags */
  --earth-tan:    #7BABC4;   /* accent blue: secondary highlights */
  --cream:        #F2E8D9;   /* primary background */
  --white:        #ffffff;
  --text-dark:    #3D2B1F;   /* primary text */
  --text-mid:     #6B5040;   /* secondary/muted text */
  --text-light:   #9A7A68;   /* de-emphasized text */

  /* Named aliases for the new palette — use these for new code */
  --accent-coral: #E8735A;
  --accent-blue:  #7BABC4;

  /* Typography */
  --font-heading: 'Georgia', 'Times New Roman', serif;
  --font-body:    'Segoe UI', 'Helvetica Neue', Arial, sans-serif;

  /* Spacing scale — multiples of 8px */
  --space-xs:  0.5rem;   /*  8px */
  --space-sm:  1rem;     /* 16px */
  --space-md:  1.5rem;   /* 24px */
  --space-lg:  2.5rem;   /* 40px */
  --space-xl:  4rem;     /* 64px */

  /* Layout */
  --max-width: 1100px;
  --radius:    6px;

  /* Transitions */
  --transition: 0.25s ease;
}

/* ============================================================
   2. RESET & BASE
      Remove browser inconsistencies and set sensible defaults.
   ============================================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth; /* Smooth scrolling for anchor links */
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  color: var(--text-dark);
  background-color: var(--cream);
  line-height: 1.7;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: var(--green-mid);
  text-decoration: underline;
  transition: color var(--transition);
}

a:hover,
a:focus {
  color: var(--green-dark);
}

/* ============================================================
   3. TYPOGRAPHY
   ============================================================ */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  line-height: 1.25;
  color: var(--green-dark);
}

h1 { font-size: clamp(2rem, 5vw, 3rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.25rem); }
h3 { font-size: clamp(1.2rem, 2.5vw, 1.6rem); }
h4 { font-size: 1.15rem; }

p {
  margin-bottom: var(--space-sm);
  color: var(--text-mid);
}

/* Utility: visually hidden but accessible to screen readers */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ============================================================
   4. LAYOUT HELPERS
   ============================================================ */

/* Centers content and prevents it from getting too wide */
.container {
  width: 90%;
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
}

/* Standard section padding — gives each section breathing room */
.section {
  padding: var(--space-xl) 0;
}

/* Alternating section background for visual rhythm */
.section--alt {
  background-color: var(--white);
}

/* Flex row that wraps on small screens */
.flex-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
}

/* Auto-grid: columns automatically fit the available space */
.grid-auto {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-md);
}

/* ============================================================
   5. BUTTONS
   ============================================================ */
.btn {
  display: inline-block;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: background-color var(--transition), color var(--transition), transform var(--transition);
  border: 2px solid transparent;
}

/* Primary button — forest green fill */
.btn--primary {
  background-color: var(--green-mid);
  color: var(--white);
  border-color: var(--green-mid);
}

.btn--primary:hover,
.btn--primary:focus {
  background-color: var(--green-dark);
  border-color: var(--green-dark);
  color: var(--white);
  transform: translateY(-2px);
}

/* Secondary / outline button */
.btn--secondary {
  background-color: transparent;
  color: var(--green-mid);
  border-color: var(--green-mid);
}

.btn--secondary:hover,
.btn--secondary:focus {
  background-color: var(--green-mid);
  color: var(--white);
  transform: translateY(-2px);
}

/* Earth-tone accent button */
.btn--earth {
  background-color: var(--earth-brown);
  color: var(--white);
  border-color: var(--earth-brown);
}

.btn--earth:hover,
.btn--earth:focus {
  background-color: #4e3019;
  border-color: #4e3019;
  color: var(--white);
  transform: translateY(-2px);
}

/* ============================================================
   6. HEADER & NAVIGATION
   ============================================================ */
.site-header {
  background-color: var(--green-dark);
  color: var(--white);
  position: sticky;     /* Stays at top when scrolling */
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-sm);
  padding-bottom: var(--space-sm);
}

/* Logo / organization name */
.site-logo {
  display: flex;
  flex-direction: column;
  text-decoration: none;
}

.site-logo__name {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: bold;
  color: var(--white);
  letter-spacing: 0.03em;
}

.site-logo__tagline {
  font-size: 0.75rem;
  color: var(--earth-tan);
  letter-spacing: 0.04em;
}

/* Main navigation links */
.site-nav__list {
  list-style: none;
  display: flex;
  gap: var(--space-md);
  align-items: center;
}

.site-nav__list a {
  color: var(--white);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  padding: 0.25rem 0;
  border-bottom: 2px solid transparent;
  transition: border-color var(--transition), color var(--transition);
}

.site-nav__list a:hover,
.site-nav__list a:focus,
.site-nav__list a[aria-current="page"] {
  color: var(--earth-tan);
  border-bottom-color: var(--earth-tan);
}

/* "Donate" link stands out as a button in the nav */
.site-nav__list .nav-donate {
  background-color: var(--earth-brown);
  color: var(--white);
  padding: 0.4rem 1.1rem;
  border-radius: var(--radius);
  border-bottom: none;
  transition: background-color var(--transition);
}

.site-nav__list .nav-donate:hover,
.site-nav__list .nav-donate:focus {
  background-color: #4e3019;
  color: var(--white);
  border-bottom-color: transparent;
}

/* Hamburger button — hidden on desktop, visible on mobile */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-xs);
  color: var(--white);
}

.nav-toggle__icon,
.nav-toggle__icon::before,
.nav-toggle__icon::after {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--white);
  transition: transform var(--transition), opacity var(--transition);
}

.nav-toggle__icon {
  position: relative;
}

.nav-toggle__icon::before,
.nav-toggle__icon::after {
  content: '';
  position: absolute;
  left: 0;
}

.nav-toggle__icon::before { top: -7px; }
.nav-toggle__icon::after  { top:  7px; }

/* Animate hamburger → X when nav is open */
.nav-toggle[aria-expanded="true"] .nav-toggle__icon {
  background-color: transparent;
}
.nav-toggle[aria-expanded="true"] .nav-toggle__icon::before {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__icon::after {
  transform: translateY(-7px) rotate(-45deg);
}

/* ============================================================
   7. HERO SECTION
      Large banner at the top of a page.
   ============================================================ */
.hero {
  background-color: var(--green-dark);
  color: var(--white);
  padding: var(--space-xl) 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

/* Subtle leaf-pattern overlay using CSS — no image required */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(ellipse at 20% 50%, rgba(90, 158, 111, 0.15) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 20%, rgba(196, 168, 122, 0.1) 0%, transparent 50%);
  pointer-events: none;
}

.hero__content {
  position: relative; /* Sits above the ::before overlay */
  max-width: 700px;
  margin: 0 auto;
}

.hero__eyebrow {
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--earth-tan);
  margin-bottom: var(--space-xs);
}

.hero h1 {
  color: var(--white);
  margin-bottom: var(--space-sm);
}

.hero__subtitle {
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: var(--space-lg);
}

.hero__ctas {
  display: flex;
  gap: var(--space-sm);
  justify-content: center;
  flex-wrap: wrap;
}

/* ============================================================
   8. CARDS
      Reusable card component used across multiple pages.
   ============================================================ */
.card {
  background-color: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
  transition: transform var(--transition), box-shadow var(--transition);
  display: flex;
  flex-direction: column;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.12);
}

.card__icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background-color: var(--green-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;   /* Emoji or text icon */
  margin-bottom: var(--space-sm);
}

.card__body {
  padding: var(--space-md);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.card__body h3 {
  margin-bottom: var(--space-xs);
}

.card__body p {
  flex: 1;
}

.card__body .btn {
  align-self: flex-start;
  margin-top: var(--space-sm);
}

/* ============================================================
   9. SECTION TITLES
   ============================================================ */
.section-title {
  text-align: center;
  margin-bottom: var(--space-lg);
}

.section-title h2 {
  margin-bottom: var(--space-xs);
}

.section-title p {
  max-width: 600px;
  margin: 0 auto;
}

/* Decorative underline beneath section headings */
.section-title h2::after {
  content: '';
  display: block;
  width: 60px;
  height: 3px;
  background-color: var(--earth-tan);
  margin: var(--space-xs) auto 0;
  border-radius: 2px;
}

/* ============================================================
   10. IMPACT / STATS BAR
       Full-width strip showing key numbers.
   ============================================================ */
.impact-bar {
  background-color: var(--green-mid);
  color: var(--white);
  padding: var(--space-lg) 0;
  text-align: center;
}

.impact-bar__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: var(--space-md);
}

.impact-stat__number {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: bold;
  color: var(--earth-tan);
  display: block;
}

.impact-stat__label {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.85);
}

/* ============================================================
   11. TESTIMONIAL / QUOTE BLOCK
   ============================================================ */
.testimonial {
  background-color: var(--green-dark);
  color: var(--white);
  padding: var(--space-xl) 0;
  text-align: center;
}

.testimonial blockquote {
  max-width: 700px;
  margin: 0 auto;
}

.testimonial__text {
  font-family: var(--font-heading);
  font-size: clamp(1.15rem, 2.5vw, 1.5rem);
  font-style: italic;
  color: var(--white);
  margin-bottom: var(--space-md);
  line-height: 1.6;
}

.testimonial__text::before { content: '\201C'; }
.testimonial__text::after  { content: '\201D'; }

.testimonial__cite {
  font-size: 0.9rem;
  color: var(--earth-tan);
  font-style: normal;
}

/* ============================================================
   12. ABOUT PAGE — TEAM GRID
   ============================================================ */
.team-card {
  text-align: center;
  padding: var(--space-md);
}

.team-card__avatar {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  background-color: var(--green-light);
  margin: 0 auto var(--space-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  color: var(--white);
  overflow: hidden;
}

.team-card__avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.team-card__name {
  font-weight: 700;
  color: var(--green-dark);
  margin-bottom: 0.25rem;
}

.team-card__title {
  font-size: 0.85rem;
  color: var(--text-light);
}

/* ============================================================
   13. PROGRAMS PAGE — PROGRAM DETAIL BLOCK
   ============================================================ */
.program-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
  align-items: center;
  padding: var(--space-lg) 0;
  border-bottom: 1px solid rgba(0, 0, 0, 0.08);
}

/* Alternate image side for visual variety */
.program-block:nth-child(even) .program-block__image {
  order: 2;
}

.program-block:nth-child(even) .program-block__text {
  order: 1;
}

.program-block__image {
  border-radius: var(--radius);
  overflow: hidden;
  background-color: var(--green-light);
  min-height: 260px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 5rem;  /* Placeholder emoji when no real image is available */
}

.program-block__tag {
  display: inline-block;
  background-color: var(--earth-tan);
  color: var(--earth-brown);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  margin-bottom: var(--space-xs);
}

.program-block__text h3 {
  margin-bottom: var(--space-xs);
}

.program-block__text ul {
  padding-left: var(--space-md);
  color: var(--text-mid);
  margin-bottom: var(--space-sm);
}

.program-block__text li {
  margin-bottom: 0.35rem;
}

/* ============================================================
   14. CONTACT PAGE — FORM
   ============================================================ */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: var(--space-xl);
  align-items: start;
}

.contact-info h3 {
  margin-bottom: var(--space-sm);
}

.contact-info-item {
  display: flex;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
}

.contact-info-item__icon {
  font-size: 1.4rem;
  flex-shrink: 0;
}

.contact-info-item__text strong {
  display: block;
  color: var(--green-dark);
}

/* Form layout */
.contact-form {
  background-color: var(--white);
  padding: var(--space-lg);
  border-radius: var(--radius);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.07);
}

.form-group {
  margin-bottom: var(--space-md);
}

.form-group label {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 0.4rem;
  color: var(--green-dark);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.7rem 1rem;
  border: 1.5px solid #ccc;
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--text-dark);
  background-color: var(--cream);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--green-mid);
  box-shadow: 0 0 0 3px rgba(46, 107, 69, 0.2);
}

.form-group textarea {
  resize: vertical;
  min-height: 130px;
}

/* Inline error message beneath a field */
.form-error {
  display: none;           /* Shown via JavaScript when validation fails */
  color: #c0392b;
  font-size: 0.82rem;
  margin-top: 0.3rem;
}

.form-group.has-error input,
.form-group.has-error textarea,
.form-group.has-error select {
  border-color: #c0392b;
}

.form-group.has-error .form-error {
  display: block;
}

/* Success message shown after form submission */
.form-success {
  display: none;
  background-color: #e8f5e9;
  border: 1px solid var(--green-light);
  color: var(--green-dark);
  border-radius: var(--radius);
  padding: var(--space-md);
  text-align: center;
  font-weight: 600;
}

/* ============================================================
   15. FOOTER
   ============================================================ */
.site-footer {
  background-color: var(--green-dark);
  color: rgba(255, 255, 255, 0.8);
  padding: var(--space-xl) 0 var(--space-md);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-lg);
  margin-bottom: var(--space-lg);
}

.footer-brand__name {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  color: var(--white);
  margin-bottom: var(--space-xs);
}

.footer-brand__desc {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.65);
  margin-bottom: var(--space-md);
}

.footer-col h4 {
  color: var(--earth-tan);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-sm);
}

.footer-col ul {
  list-style: none;
}

.footer-col li {
  margin-bottom: 0.4rem;
}

.footer-col a {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color var(--transition);
}

.footer-col a:hover {
  color: var(--white);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding-top: var(--space-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-sm);
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.5);
}

.footer-bottom a {
  color: rgba(255, 255, 255, 0.6);
  text-decoration: underline;
}

/* Social icon links */
.social-links {
  display: flex;
  gap: var(--space-sm);
  margin-top: var(--space-sm);
}

.social-links a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.1);
  color: var(--white);
  text-decoration: none;
  font-size: 1rem;
  transition: background-color var(--transition);
}

.social-links a:hover {
  background-color: var(--green-mid);
}

/* ============================================================
   16. PAGE BANNER (inner pages)
       Shorter hero used on About, Programs, Contact pages.
   ============================================================ */
.page-banner {
  background-color: var(--green-dark);
  color: var(--white);
  padding: var(--space-lg) 0;
  text-align: center;
}

.page-banner h1 {
  color: var(--white);
  margin-bottom: var(--space-xs);
}

.page-banner p {
  color: rgba(255, 255, 255, 0.75);
  max-width: 580px;
  margin: 0 auto;
}

/* Breadcrumb trail beneath the banner */
.breadcrumb {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  margin-top: var(--space-sm);
  color: rgba(255, 255, 255, 0.55);
}

.breadcrumb a {
  color: var(--earth-tan);
  text-decoration: none;
}

.breadcrumb a:hover { text-decoration: underline; }

.breadcrumb__sep { color: rgba(255, 255, 255, 0.4); }

/* ============================================================
   17. UTILITY CLASSES
   ============================================================ */
.text-center { text-align: center; }
.text-right  { text-align: right; }
.mt-sm  { margin-top: var(--space-sm); }
.mt-md  { margin-top: var(--space-md); }
.mt-lg  { margin-top: var(--space-lg); }
.mb-sm  { margin-bottom: var(--space-sm); }
.mb-md  { margin-bottom: var(--space-md); }

/* Color-accent text */
.text-green { color: var(--green-mid); }
.text-earth { color: var(--earth-brown); }

/* ============================================================
   18. RESPONSIVE — MOBILE STYLES
       These rules take effect on screens narrower than 768px.
   ============================================================ */
@media (max-width: 768px) {

  /* Show the hamburger button */
  .nav-toggle {
    display: block;
  }

  /* Stack nav links vertically in a dropdown panel */
  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--green-dark);
    padding: var(--space-sm);
    display: none;      /* Toggled via JS */
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
  }

  .site-nav.is-open {
    display: block;
  }

  .site-nav__list {
    flex-direction: column;
    gap: 0;
  }

  .site-nav__list li {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
  }

  .site-nav__list a {
    display: block;
    padding: 0.75rem var(--space-sm);
    border-bottom: none;
  }

  /* Stack program blocks vertically */
  .program-block {
    grid-template-columns: 1fr;
  }

  .program-block:nth-child(even) .program-block__image,
  .program-block:nth-child(even) .program-block__text {
    order: unset;
  }

  /* Stack contact grid */
  .contact-grid {
    grid-template-columns: 1fr;
  }

  /* Stack footer */
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 480px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .hero__ctas {
    flex-direction: column;
    align-items: center;
  }
}