/* ============================================
   Kiddie Kinder Foundations - Stylesheet
   ============================================ */

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

:root {
  --purple-dark: #2f1c6a;
  --purple-main: #673de6;
  --purple-light: #8c85ff;
  --purple-bg: #f5f0ff;
  --indigo: #6366f1;
  --warm-orange: #f59e0b;
  --warm-pink: #ec4899;
  --teal: #14b8a6;
  --green: #22c55e;
  --white: #ffffff;
  --off-white: #faf9fe;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-500: #6b7280;
  --gray-700: #374151;
  --gray-900: #1f2937;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 4px 24px rgba(103, 61, 230, 0.10);
  --shadow-lg: 0 12px 40px rgba(103, 61, 230, 0.15);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--gray-900);
  line-height: 1.6;
  background: var(--white);
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* --- Typography --- */
h1, h2, h3, h4 { line-height: 1.2; font-weight: 700; }
h1 { font-size: clamp(2rem, 5vw, 3.2rem); }
h2 { font-size: clamp(1.6rem, 4vw, 2.4rem); }
h3 { font-size: clamp(1.2rem, 3vw, 1.5rem); }

.text-purple { color: var(--purple-main); }
.text-gradient {
  background: linear-gradient(135deg, var(--purple-main), var(--purple-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 1rem;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  text-align: center;
  justify-content: center;
}

.btn-primary {
  background: linear-gradient(135deg, var(--purple-main), var(--indigo));
  color: var(--white);
  box-shadow: 0 4px 16px rgba(103, 61, 230, 0.3);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(103, 61, 230, 0.4);
}

.btn-secondary {
  background: var(--white);
  color: var(--purple-main);
  border: 2px solid var(--purple-main);
}
.btn-secondary:hover {
  background: var(--purple-bg);
  transform: translateY(-2px);
}

.btn-warm {
  background: linear-gradient(135deg, var(--warm-orange), #f97316);
  color: var(--white);
  box-shadow: 0 4px 16px rgba(245, 158, 11, 0.3);
}
.btn-warm:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(245, 158, 11, 0.4);
}

.btn-lg {
  padding: 18px 40px;
  font-size: 1.1rem;
}

/* --- Header / Navbar --- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--gray-200);
  transition: var(--transition);
}

.header.scrolled {
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--purple-dark);
}

.nav-logo img {
  height: 44px;
  width: auto;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-links a {
  padding: 8px 18px;
  border-radius: 50px;
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--gray-700);
  transition: var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--purple-main);
  background: var(--purple-bg);
}

.nav-links .btn {
  margin-left: 8px;
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.mobile-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--gray-900);
  margin: 6px 0;
  transition: var(--transition);
  border-radius: 2px;
}

/* --- Hero Section --- */
.hero {
  padding: 120px 0 80px;
  background: linear-gradient(180deg, var(--purple-bg) 0%, var(--white) 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -100px;
  right: -100px;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(103, 61, 230, 0.08) 0%, transparent 70%);
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -50px;
  left: -100px;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(236, 72, 153, 0.06) 0%, transparent 70%);
}

.hero .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-content h1 {
  margin-bottom: 20px;
  color: var(--purple-dark);
}

.hero-content p {
  font-size: 1.15rem;
  color: var(--gray-700);
  margin-bottom: 32px;
  max-width: 500px;
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 32px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: var(--white);
  border-radius: 50px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--gray-700);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.hero-badge .icon { font-size: 1.2rem; }

.hero-buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-image {
  position: relative;
}

.hero-image img {
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
}

.hero-stat {
  position: absolute;
  bottom: -20px;
  left: -20px;
  background: var(--white);
  padding: 16px 24px;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow);
  display: flex;
  align-items: center;
  gap: 12px;
}

.hero-stat .number {
  font-size: 2rem;
  font-weight: 800;
  color: var(--purple-main);
  line-height: 1;
}

.hero-stat .label {
  font-size: 0.85rem;
  color: var(--gray-500);
  line-height: 1.3;
}

/* --- Section Helpers --- */
.section {
  padding: 80px 0;
}

.section-alt {
  background: var(--off-white);
}

.section-purple {
  background: linear-gradient(135deg, var(--purple-dark), #3b1f8e);
  color: var(--white);
}

.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 48px;
}

.section-header p {
  margin-top: 12px;
  color: var(--gray-500);
  font-size: 1.1rem;
}

.section-purple .section-header p {
  color: rgba(255, 255, 255, 0.7);
}

/* --- Values / Pillars Grid --- */
.pillars-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.pillar-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 32px;
  text-align: center;
  box-shadow: var(--shadow);
  transition: var(--transition);
  border: 1px solid var(--gray-200);
}

.pillar-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.pillar-icon {
  width: 64px;
  height: 64px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  margin: 0 auto 20px;
}

.pillar-icon.purple { background: var(--purple-bg); }
.pillar-icon.pink { background: #fce7f3; }
.pillar-icon.teal { background: #ccfbf1; }
.pillar-icon.orange { background: #fef3c7; }
.pillar-icon.green { background: #dcfce7; }
.pillar-icon.blue { background: #dbeafe; }

.pillar-card h3 {
  margin-bottom: 10px;
  color: var(--purple-dark);
}

.pillar-card p {
  color: var(--gray-500);
  font-size: 0.95rem;
}

/* --- About / Mission Section --- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-content h2 { margin-bottom: 20px; }

.about-content p {
  color: var(--gray-700);
  margin-bottom: 16px;
}

.about-highlights {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 24px;
}

.highlight-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.highlight-item .icon {
  font-size: 1.4rem;
  flex-shrink: 0;
  margin-top: 2px;
}

.highlight-item strong {
  display: block;
  font-size: 0.95rem;
  color: var(--purple-dark);
}

.highlight-item span {
  font-size: 0.85rem;
  color: var(--gray-500);
}

.about-image img {
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

/* --- Books Grid --- */
.books-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 28px;
}

.book-card {
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
  border: 1px solid var(--gray-200);
}

.book-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.book-cover {
  height: 320px;
  background: var(--purple-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
}

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

.book-badge {
  position: absolute;
  top: 12px;
  right: 12px;
  background: var(--green);
  color: var(--white);
  padding: 4px 14px;
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 600;
}

.book-info {
  padding: 20px;
}

.book-info h3 {
  margin-bottom: 8px;
  color: var(--purple-dark);
}

.book-info .book-meta {
  font-size: 0.85rem;
  color: var(--gray-500);
  margin-bottom: 12px;
}

.book-info p {
  font-size: 0.9rem;
  color: var(--gray-700);
  margin-bottom: 16px;
}

.book-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.book-tag {
  padding: 4px 12px;
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 500;
  background: var(--purple-bg);
  color: var(--purple-main);
}

/* --- Testimonials --- */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.testimonial-card {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius);
  padding: 28px;
}

.testimonial-stars {
  color: var(--warm-orange);
  font-size: 1.1rem;
  margin-bottom: 12px;
}

.testimonial-card p {
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: 16px;
  color: rgba(255, 255, 255, 0.9);
  font-style: italic;
}

.testimonial-author {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--purple-light);
}

/* --- Donate Section --- */
.donate-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 40px;
}

.donate-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 32px;
  text-align: center;
  box-shadow: var(--shadow);
  border: 2px solid var(--gray-200);
  transition: var(--transition);
}

.donate-card:hover {
  border-color: var(--purple-main);
  transform: translateY(-2px);
}

.donate-card.featured {
  border-color: var(--purple-main);
  position: relative;
}

.donate-card.featured::before {
  content: 'Most Popular';
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--purple-main);
  color: var(--white);
  padding: 4px 16px;
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 600;
}

.donate-amount {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--purple-main);
  margin-bottom: 8px;
}

.donate-card h3 {
  margin-bottom: 12px;
  color: var(--purple-dark);
}

.donate-card p {
  color: var(--gray-500);
  font-size: 0.9rem;
  margin-bottom: 20px;
}

/* --- Impact Stats --- */
.impact-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}

.impact-item .number {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--purple-light);
}

.impact-item .label {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.7);
  margin-top: 4px;
}

/* --- FAQ --- */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
  overflow: hidden;
  background: var(--white);
}

.faq-question {
  width: 100%;
  padding: 18px 24px;
  background: none;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 1rem;
  font-weight: 600;
  color: var(--gray-900);
  text-align: left;
  transition: var(--transition);
}

.faq-question:hover { color: var(--purple-main); }

.faq-question .arrow {
  transition: var(--transition);
  font-size: 1.2rem;
  color: var(--gray-500);
  flex-shrink: 0;
}

.faq-item.open .faq-question .arrow {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}

.faq-answer-inner {
  padding: 0 24px 18px;
  color: var(--gray-700);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* --- Contact Form --- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}

.contact-form {
  background: var(--white);
  border-radius: var(--radius);
  padding: 36px;
  box-shadow: var(--shadow);
  border: 1px solid var(--gray-200);
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  margin-bottom: 6px;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--gray-700);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-family: inherit;
  transition: var(--transition);
  background: var(--off-white);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--purple-main);
  box-shadow: 0 0 0 3px rgba(103, 61, 230, 0.1);
  background: var(--white);
}

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

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.contact-info h2 { margin-bottom: 16px; }

.contact-info > p {
  color: var(--gray-700);
  margin-bottom: 32px;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.contact-item .icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--purple-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  flex-shrink: 0;
}

.contact-item strong {
  display: block;
  font-size: 0.95rem;
  margin-bottom: 2px;
}

.contact-item span {
  color: var(--gray-500);
  font-size: 0.9rem;
}

/* --- CTA Banner --- */
.cta-banner {
  padding: 80px 0;
  background: linear-gradient(135deg, var(--purple-dark), #3b1f8e);
  text-align: center;
  color: var(--white);
}

.cta-banner h2 {
  margin-bottom: 16px;
}

.cta-banner p {
  color: rgba(255, 255, 255, 0.7);
  font-size: 1.1rem;
  margin-bottom: 32px;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

.cta-banner .btn-warm {
  font-size: 1.1rem;
  padding: 16px 40px;
}

/* --- Footer --- */
.footer {
  background: var(--gray-900);
  color: var(--gray-200);
  padding: 60px 0 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand p {
  color: var(--gray-500);
  font-size: 0.9rem;
  margin-top: 12px;
  line-height: 1.7;
}

.footer h4 {
  font-size: 0.95rem;
  margin-bottom: 16px;
  color: var(--white);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer-links a {
  display: block;
  padding: 4px 0;
  color: var(--gray-500);
  font-size: 0.9rem;
  transition: var(--transition);
}

.footer-links a:hover { color: var(--purple-light); }

.footer-newsletter p {
  color: var(--gray-500);
  font-size: 0.9rem;
  margin-bottom: 16px;
}

.newsletter-form {
  display: flex;
  gap: 8px;
}

.newsletter-form input {
  flex: 1;
  padding: 10px 16px;
  border: 1.5px solid #374151;
  border-radius: 50px;
  background: transparent;
  color: var(--white);
  font-size: 0.9rem;
}

.newsletter-form input::placeholder { color: var(--gray-500); }

.newsletter-form input:focus {
  outline: none;
  border-color: var(--purple-light);
}

.newsletter-form button {
  padding: 10px 20px;
  border-radius: 50px;
  background: var(--purple-main);
  color: var(--white);
  border: none;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}

.newsletter-form button:hover { background: var(--indigo); }

.footer-bottom {
  border-top: 1px solid #374151;
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: var(--gray-500);
}

.footer-tax {
  text-align: center;
  font-size: 0.8rem;
  color: var(--gray-500);
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid #374151;
}

/* --- Mobile Responsive --- */
@media (max-width: 1024px) {
  .pillars-grid, .testimonials-grid, .donate-grid { grid-template-columns: repeat(2, 1fr); }
  .impact-grid { grid-template-columns: repeat(2, 1fr); gap: 32px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .mobile-toggle { display: block; }

  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--white);
    padding: 16px 24px;
    border-bottom: 1px solid var(--gray-200);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
  }

  .nav-links.open a { padding: 12px 0; }

  .hero .container {
    grid-template-columns: 1fr;
    gap: 40px;
    text-align: center;
  }

  .hero-content p { margin-left: auto; margin-right: auto; }
  .hero-badges { justify-content: center; }
  .hero-buttons { justify-content: center; }
  .hero-stat { left: 50%; transform: translateX(-50%); }

  .about-grid, .contact-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .pillars-grid, .testimonials-grid, .donate-grid, .books-grid {
    grid-template-columns: 1fr;
  }

  .impact-grid { grid-template-columns: repeat(2, 1fr); }

  .form-row { grid-template-columns: 1fr; }

  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }

  .about-highlights { grid-template-columns: 1fr; }
}

/* --- Animations --- */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

.animate-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-in.visible {
  opacity: 1;
  transform: translateY(0);
}