/* ═══════════════════════════════════════════
   Learn Way Education Technology — Style
   Makeblock-inspired, clean & professional
   ═══════════════════════════════════════════ */

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

:root {
  --primary: #005BAC;
  --primary-dark: #004080;
  --primary-light: #e8f0fe;
  --accent: #FF6B35;
  --accent-light: #fff0e8;
  --text: #1a1a2e;
  --text-light: #5a5a7a;
  --bg: #ffffff;
  --section-bg: #f8f9fc;
  --card-bg: #ffffff;
  --border: #e8e8f0;
  --shadow: 0 4px 24px rgba(0,0,0,0.06);
  --shadow-hover: 0 8px 40px rgba(0,0,0,0.10);
  --radius: 16px;
  --radius-sm: 8px;
  --transition: 0.3s ease;
  --max-width: 1200px;
  --font-sans: 'Segoe UI', -apple-system, BlinkMacSystemFont, 'Noto Sans HK', 'PingFang TC', sans-serif;
}

html { scroll-behavior: smooth; }
body { font-family: var(--font-sans); color: var(--text); line-height: 1.6; background: var(--bg); -webkit-font-smoothing: antialiased; }

.container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
.section { padding: 100px 0; }

.section-header { text-align: center; margin-bottom: 60px; }
.section-tag {
  display: inline-block;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 4px 16px;
  border-radius: 20px;
  letter-spacing: 0.5px;
  margin-bottom: 16px;
  text-transform: uppercase;
}
.section-header h2 {
  font-size: 2.4rem;
  font-weight: 800;
  margin-bottom: 12px;
  line-height: 1.3;
}
.section-header p {
  font-size: 1.15rem;
  color: var(--text-light);
  max-width: 600px;
  margin: 0 auto;
}

/* ─── Buttons ─── */
.btn {
  display: inline-block;
  padding: 14px 32px;
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  font-family: var(--font-sans);
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 4px 16px rgba(0,91,172,0.3); }
.btn-secondary { background: transparent; color: var(--primary); border: 2px solid var(--primary); }
.btn-secondary:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }
.btn-small { padding: 8px 20px; font-size: 0.9rem; background: var(--primary-light); color: var(--primary); border-radius: var(--radius-sm); font-weight: 600; text-decoration: none; transition: var(--transition); display: inline-block; }
.btn-small:hover { background: var(--primary); color: #fff; }

/* ════════════════════════════
   HEADER
   ════════════════════════════ */
.header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}
.header.scrolled { box-shadow: 0 2px 20px rgba(0,0,0,0.06); }
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  color: var(--text);
}
.logo-icon { font-size: 1.5rem; }
.logo-text {
  font-size: 1.3rem;
  font-weight: 800;
  display: flex;
  align-items: baseline;
  gap: 6px;
}
.logo-sub { font-size: 0.8rem; font-weight: 400; color: var(--text-light); letter-spacing: 0.5px; }

.nav { display: flex; align-items: center; gap: 32px; }
.nav-link {
  text-decoration: none;
  color: var(--text);
  font-size: 0.95rem;
  font-weight: 500;
  transition: var(--transition);
  position: relative;
}
.nav-link::after {
  content: '';
  position: absolute; bottom: -4px; left: 0; right: 0;
  height: 2px; background: var(--primary);
  transform: scaleX(0); transition: var(--transition);
}
.nav-link:hover::after { transform: scaleX(1); }
.nav-link:hover { color: var(--primary); }
.nav-link.contact-btn {
  background: var(--primary);
  color: #fff;
  padding: 10px 24px;
  border-radius: var(--radius-sm);
  font-weight: 600;
}
.nav-link.contact-btn::after { display: none; }
.nav-link.contact-btn:hover { background: var(--primary-dark); transform: translateY(-1px); }

.menu-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 4px; }
.menu-toggle span { display: block; width: 24px; height: 2.5px; background: var(--text); border-radius: 2px; transition: var(--transition); }
.menu-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.menu-toggle.active span:nth-child(2) { opacity: 0; }
.menu-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ════════════════════════════
   HERO
   ════════════════════════════ */
.hero {
  padding: 160px 0 80px;
  background: linear-gradient(180deg, #f0f7ff 0%, #ffffff 100%);
  position: relative;
  overflow: hidden;
}
.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.hero-text h1 {
  font-size: 3.2rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 20px;
}
.hero-text .highlight { color: var(--primary); }
.hero-text p {
  font-size: 1.15rem;
  color: var(--text-light);
  margin-bottom: 32px;
  max-width: 480px;
  line-height: 1.7;
}
.hero-cta { display: flex; gap: 16px; }

/* ─── Hero Illustration ─── */
.hero-visual { display: flex; align-items: center; justify-content: center; }
.hero-illustration {
  position: relative;
  width: 340px;
  height: 340px;
}
.cube {
  position: absolute;
  border-radius: 12px;
  opacity: 0.9;
  animation: float 6s ease-in-out infinite;
}
.cube-1 {
  width: 100px; height: 100px;
  background: var(--primary);
  top: 50%; left: 50%;
  transform: translate(-50%, -50%) rotate(45deg);
  animation-delay: 0s;
}
.cube-2 {
  width: 60px; height: 60px;
  background: var(--accent);
  top: 20%; right: 10%;
  border-radius: 50%;
  animation-delay: 1s;
}
.cube-3 {
  width: 40px; height: 40px;
  background: #00C9A7;
  bottom: 15%; left: 15%;
  animation-delay: 2s;
}
.orbit-ring {
  position: absolute;
  top: 50%; left: 50%;
  width: 280px; height: 280px;
  transform: translate(-50%, -50%);
  border: 2px dashed rgba(0,91,172,0.15);
  border-radius: 50%;
  animation: spin 20s linear infinite;
}
@keyframes float {
  0%, 100% { transform: translateY(0px) rotate(45deg); }
  50% { transform: translateY(-20px) rotate(45deg); }
}
@keyframes spin {
  from { transform: translate(-50%, -50%) rotate(0deg); }
  to { transform: translate(-50%, -50%) rotate(360deg); }
}

.hero-wave { position: absolute; bottom: -2px; left: 0; right: 0; line-height: 0; }
.hero-wave svg { width: 100%; height: 80px; display: block; }

/* ════════════════════════════
   PRODUCTS
   ════════════════════════════ */
.products { background: var(--bg); }

.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 30px;
}
.product-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
  border: 1px solid var(--border);
}
.product-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-6px);
}
.product-img {
  height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.product-emoji { font-size: 4rem; filter: drop-shadow(0 4px 8px rgba(0,0,0,0.1)); }
.product-body {
  padding: 24px;
}
.product-body h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 10px;
}
.product-body p {
  font-size: 0.9rem;
  color: var(--text-light);
  margin-bottom: 16px;
  line-height: 1.6;
}
.product-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 18px; }
.product-tags span {
  background: var(--primary-light);
  color: var(--primary);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 12px;
}

/* ════════════════════════════
   STATS
   ════════════════════════════ */
.stats {
  background: var(--primary);
  color: #fff;
  padding: 80px 0;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
  text-align: center;
}
.stat-number {
  display: block;
  font-size: 3rem;
  font-weight: 800;
  margin-bottom: 4px;
}
.stat-label { font-size: 1rem; opacity: 0.85; font-weight: 500; }

/* ════════════════════════════
   EDUCATION
   ════════════════════════════ */
.education { background: var(--section-bg); }
.edu-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 30px;
}
.edu-card {
  background: var(--card-bg);
  padding: 40px 30px;
  border-radius: var(--radius);
  text-align: center;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  transition: var(--transition);
}
.edu-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.edu-icon { font-size: 3rem; margin-bottom: 20px; }
.edu-card h3 { font-size: 1.2rem; font-weight: 700; margin-bottom: 10px; }
.edu-card p { font-size: 0.9rem; color: var(--text-light); line-height: 1.6; }

/* ════════════════════════════
   ABOUT
   ════════════════════════════ */
.about { background: var(--bg); }
.about-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.about-text h2 { font-size: 2rem; font-weight: 800; margin-bottom: 20px; }
.about-text h2 small { font-size: 1rem; font-weight: 400; color: var(--text-light); }
.about-text p { font-size: 1rem; color: var(--text-light); margin-bottom: 16px; line-height: 1.7; }
.about-features { margin-top: 24px; }
.about-feature { font-size: 1rem; margin-bottom: 8px; font-weight: 500; color: var(--text); }

.about-card {
  background: var(--primary);
  color: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 8px 32px rgba(0,91,172,0.25);
}
.about-card-header {
  background: rgba(255,255,255,0.1);
  padding: 16px 24px;
  font-weight: 700;
  font-size: 1rem;
}
.about-card-body { padding: 32px 24px; }
.about-card-body p { margin-bottom: 12px; line-height: 1.6; color: rgba(255,255,255,0.9); }
.about-card-body p strong { color: #fff; font-size: 1.1rem; }
.about-motto { font-style: italic; opacity: 0.8; font-size: 0.9rem; margin-top: 16px; padding-top: 16px; border-top: 1px solid rgba(255,255,255,0.2); }

/* ════════════════════════════
   CONTACT
   ════════════════════════════ */
.contact { background: var(--section-bg); }
.contact-content {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 50px;
  max-width: 900px;
  margin: 0 auto;
}
.contact-info { display: flex; flex-direction: column; gap: 24px; justify-content: center; }
.contact-item { display: flex; gap: 16px; align-items: center; }
.contact-icon { font-size: 1.5rem; }
.contact-item div strong { display: block; font-size: 0.85rem; color: var(--text-light); font-weight: 600; }
.contact-item a, .contact-item span { font-size: 1.05rem; color: var(--text); text-decoration: none; }

.contact-form { display: flex; flex-direction: column; gap: 16px; }
.contact-form input,
.contact-form textarea {
  padding: 14px 18px;
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-family: var(--font-sans);
  transition: var(--transition);
  background: var(--card-bg);
}
.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(0,91,172,0.08);
}

/* ════════════════════════════
   FOOTER
   ════════════════════════════ */
.footer { background: var(--text); color: rgba(255,255,255,0.7); padding: 60px 0 30px; }
.footer-inner { display: grid; grid-template-columns: 1.5fr 1fr; gap: 60px; margin-bottom: 40px; }
.footer-brand .logo-text { color: #fff; }
.footer-brand .logo-sub { color: rgba(255,255,255,0.5); }
.footer-brand p { margin-top: 12px; font-size: 0.95rem; }
.footer-links { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.footer-col h4 { color: #fff; font-size: 1rem; font-weight: 700; margin-bottom: 16px; }
.footer-col a { display: block; color: rgba(255,255,255,0.6); text-decoration: none; font-size: 0.9rem; margin-bottom: 8px; transition: var(--transition); }
.footer-col a:hover { color: #fff; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); padding-top: 24px; text-align: center; font-size: 0.85rem; }

/* ════════════════════════════
   RESPONSIVE
   ════════════════════════════ */
@media (max-width: 968px) {
  .hero-inner { grid-template-columns: 1fr; text-align: center; gap: 40px; }
  .hero-text p { margin: 0 auto 32px; }
  .hero-cta { justify-content: center; }
  .hero-visual { display: none; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .about-inner { grid-template-columns: 1fr; }
  .contact-content { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; gap: 40px; }
  .hero { padding: 140px 0 60px; }
  .section { padding: 70px 0; }
  .hero-text h1 { font-size: 2.4rem; }
  .section-header h2 { font-size: 2rem; }
  .nav { display: none; }
  .nav.open { display: flex; flex-direction: column; position: absolute; top: 68px; left: 0; right: 0; background: rgba(255,255,255,0.98); padding: 24px; gap: 20px; border-bottom: 1px solid var(--border); }
  .menu-toggle { display: flex; }
}

@media (max-width: 600px) {
  .stat-number { font-size: 2.2rem; }
  .product-grid { grid-template-columns: 1fr; }
  .edu-grid { grid-template-columns: 1fr; }
  .footer-links { grid-template-columns: 1fr; }
}