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

:root {
  --primary: #e94560;
  --primary-dark: #c0392b;
  --primary-light: #ff6b81;
  --bg-light: #f0f2f5;
  --bg-white: #ffffff;
  --text-dark: #1a1a2e;
  --text-light: #555;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --transition: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --glass-bg: rgba(255, 255, 255, 0.6);
  --glass-border: rgba(255, 255, 255, 0.3);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
}

body.dark-mode {
  --bg-light: #121212;
  --bg-white: #1e1e1e;
  --text-dark: #e0e0e0;
  --text-light: #aaa;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
  --glass-bg: rgba(30, 30, 30, 0.7);
  --glass-border: rgba(255, 255, 255, 0.1);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  line-height: 1.7;
  color: var(--text-dark);
  background: var(--bg-light);
  transition: background var(--transition), color var(--transition);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: var(--primary-dark);
  text-decoration: underline;
}

h1, h2, h3 {
  font-weight: 700;
  line-height: 1.3;
}

h1 {
  font-size: clamp(1.8rem, 5vw, 2.6rem);
}

h2 {
  font-size: clamp(1.4rem, 4vw, 1.9rem);
  margin-bottom: 1.2rem;
  position: relative;
  display: inline-block;
}

h2::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0;
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--primary-light));
  border-radius: 4px;
}

h3 {
  font-size: 1.2rem;
  margin-bottom: 0.6rem;
}

p {
  margin-bottom: 1rem;
  color: var(--text-light);
}

ul, ol {
  margin-bottom: 1rem;
  padding-left: 1.5rem;
}

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

/* ===== Scroll Animations ===== */
[data-animate] {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-animate].animate-in {
  opacity: 1;
  transform: translateY(0);
}

/* ===== Header & Navigation ===== */
header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
  transition: background var(--transition), box-shadow var(--transition);
}

body.dark-mode header {
  background: rgba(30, 30, 30, 0.85);
}

header.sticky {
  box-shadow: var(--shadow-md);
}

nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0.7rem 1.5rem;
}

.logo a {
  display: inline-flex;
  align-items: center;
  transition: transform var(--transition);
}

.logo a:hover {
  transform: scale(1.05);
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 0.5rem;
}

.nav-menu a {
  color: var(--text-dark);
  font-weight: 500;
  padding: 0.5rem 0.8rem;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
  position: relative;
}

.nav-menu a::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 70%;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
  transition: transform var(--transition);
}

.nav-menu a:hover::after,
.nav-menu a[aria-current="page"]::after {
  transform: translateX(-50%) scaleX(1);
}

.nav-menu a:hover {
  background: rgba(233, 69, 96, 0.08);
  color: var(--primary);
}

.nav-menu a[aria-current="page"] {
  color: var(--primary);
  background: rgba(233, 69, 96, 0.1);
}

.nav-actions {
  display: flex;
  gap: 0.4rem;
  align-items: center;
}

.nav-actions button {
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  border-radius: 50%;
  color: var(--text-dark);
  transition: all var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
}

.nav-actions button:hover {
  background: rgba(233, 69, 96, 0.1);
  color: var(--primary);
  transform: scale(1.1);
}

.menu-toggle {
  display: none;
}

/* ===== Search Bar ===== */
.search-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 0.75rem 1.5rem;
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--glass-border);
  animation: slideDown 0.3s ease;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.search-bar form {
  display: flex;
  gap: 0.5rem;
  flex: 1;
  max-width: 500px;
}

.search-bar input {
  flex: 1;
  padding: 0.6rem 1rem;
  border: 2px solid transparent;
  border-radius: var(--radius-sm);
  background: var(--bg-white);
  color: var(--text-dark);
  font-size: 0.95rem;
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}

.search-bar input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(233, 69, 96, 0.15);
}

.search-bar button[type="submit"] {
  padding: 0.6rem 1.2rem;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background var(--transition), transform var(--transition);
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-weight: 600;
}

.search-bar button[type="submit"]:hover {
  background: var(--primary-dark);
  transform: scale(1.03);
}

.search-close {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 1.3rem;
  color: var(--text-dark);
  padding: 0.4rem 0.6rem;
  border-radius: 50%;
  transition: all var(--transition);
}

.search-close:hover {
  background: rgba(0, 0, 0, 0.05);
  color: var(--primary);
  transform: rotate(90deg);
}

/* ===== Main Layout ===== */
main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 6rem 1.5rem 3rem;
}

section {
  margin-bottom: 4rem;
  padding: 2rem 0;
}

/* ===== Hero Section with Gradient Banner ===== */
.hero {
  display: flex;
  align-items: center;
  gap: 3rem;
  padding: 3rem 0;
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
  color: #fff;
  padding: 3rem 2.5rem;
  margin-top: 0.5rem;
  box-shadow: var(--shadow-lg);
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at 30% 50%, rgba(233, 69, 96, 0.15), transparent 60%),
              radial-gradient(circle at 70% 50%, rgba(255, 107, 129, 0.1), transparent 60%);
  animation: heroGlow 8s ease-in-out infinite alternate;
}

@keyframes heroGlow {
  0% { transform: translate(0, 0); }
  100% { transform: translate(5%, 5%); }
}

.hero-content {
  flex: 1;
  position: relative;
  z-index: 1;
}

.hero-content h1 {
  color: #fff;
  margin-bottom: 0.8rem;
  font-size: clamp(1.8rem, 5vw, 2.8rem);
  line-height: 1.2;
}

.hero-content p {
  color: rgba(255, 255, 255, 0.85);
  font-size: 1.05rem;
  max-width: 600px;
}

.hero-actions {
  margin-top: 1.5rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
}

.btn-primary,
.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.8rem 2rem;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: all var(--transition);
  cursor: pointer;
  border: none;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff;
  box-shadow: 0 4px 15px rgba(233, 69, 96, 0.3);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(233, 69, 96, 0.4);
  text-decoration: none;
  color: #fff;
}

.btn-secondary {
  background: transparent;
  border: 2px solid rgba(255, 255, 255, 0.6);
  color: #fff;
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: #fff;
  transform: translateY(-3px);
  text-decoration: none;
  color: #fff;
}

.hero-visual {
  flex: 1;
  text-align: center;
  position: relative;
  z-index: 1;
}

.hero-visual svg {
  max-width: 100%;
  height: auto;
  animation: float 6s ease-in-out infinite;
  filter: drop-shadow(0 10px 30px rgba(233, 69, 96, 0.2));
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-15px); }
}

/* ===== About Section ===== */
.about {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
}

.about:hover {
  box-shadow: var(--shadow-md);
}

.about-details {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
  margin-top: 1.5rem;
}

.about-item {
  background: var(--bg-light);
  padding: 1.8rem;
  border-radius: var(--radius-md);
  transition: all var(--transition);
  border: 1px solid transparent;
}

.about-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary-light);
  background: var(--bg-white);
}

.about-item h3 {
  color: var(--primary);
}

/* ===== Products Section ===== */
.products h2 {
  margin-bottom: 1.5rem;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.8rem;
}

.product-card {
  background: var(--bg-white);
  padding: 2rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  border: 1px solid transparent;
  position: relative;
  overflow: hidden;
}

.product-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--primary-light));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}

.product-card:hover::before {
  transform: scaleX(1);
}

.product-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(233, 69, 96, 0.15);
}

.product-card h3 {
  color: var(--primary);
  margin-bottom: 0.8rem;
}

.product-card ul {
  list-style: none;
  padding: 0;
}

.product-card ul li {
  padding: 0.4rem 0;
  padding-left: 1.5rem;
  position: relative;
}

.product-card ul li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--primary);
  font-weight: bold;
}

/* ===== Features Section ===== */
.features {
  background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
  border-radius: var(--radius-lg);
  padding: 3rem 2.5rem;
  color: #fff;
}

.features h2 {
  color: #fff;
}

.features h2::after {
  background: linear-gradient(90deg, var(--primary-light), #fff);
}

.features-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
  margin-top: 1.5rem;
}

.feature-item {
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  padding: 2rem;
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: all var(--transition);
}

.feature-item:hover {
  background: rgba(255, 255, 255, 0.15);
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

.feature-item h3 {
  color: var(--primary-light);
  font-size: 1.3rem;
  margin-bottom: 0.8rem;
}

.feature-item p {
  color: rgba(255, 255, 255, 0.8);
}

/* ===== Resources Section ===== */
.resource-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}

.resource-card {
  background: var(--bg-white);
  padding: 2rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  border: 1px solid transparent;
}

.resource-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  border-color: rgba(233, 69, 96, 0.2);
}

.resource-card h3 {
  color: var(--text-dark);
  transition: color var(--transition);
}

.resource-card:hover h3 {
  color: var(--primary);
}

.resource-card a {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-weight: 600;
  margin-top: 0.5rem;
  transition: gap var(--transition);
}

.resource-card a:hover {
  gap: 0.6rem;
}

/* ===== Guide Section ===== */
.guide {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: var(--shadow-sm);
}

.guide ol {
  max-width: 650px;
  margin: 1.5rem auto;
  counter-reset: step;
  list-style: none;
  padding: 0;
}

.guide li {
  counter-increment: step;
  padding: 1rem 1rem 1rem 3.5rem;
  position: relative;
  margin-bottom: 0.8rem;
  background: var(--bg-light);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}

.guide li:hover {
  transform: translateX(5px);
  box-shadow: var(--shadow-sm);
}

.guide li::before {
  content: counter(step);
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  width: 30px;
  height: 30px;
  background: var(--primary);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.9rem;
}

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

.faq-item {
  margin-bottom: 0.8rem;
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: var(--radius-sm);
  overflow: hidden;
  transition: all var(--transition);
}

body.dark-mode .faq-item {
  border-color: rgba(255, 255, 255, 0.08);
}

.faq-item:hover {
  border-color: var(--primary-light);
  box-shadow: var(--shadow-sm);
}

.faq-item summary {
  padding: 1.2rem 1.5rem;
  background: var(--bg-white);
  cursor: pointer;
  font-weight: 600;
  color: var(--text-dark);
  transition: all var(--transition);
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: '+';
  font-size: 1.4rem;
  font-weight: 300;
  color: var(--primary);
  transition: transform var(--transition);
}

.faq-item[open] summary::after {
  content: '−';
  transform: rotate(180deg);
}

.faq-item summary:hover {
  background: rgba(233, 69, 96, 0.04);
  color: var(--primary);
}

.faq-item p {
  padding: 0 1.5rem 1.2rem;
  margin: 0;
}

.faq-item[open] {
  border-color: var(--primary);
}

/* ===== Contact Section ===== */
.contact-details {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
  margin-top: 1.5rem;
}

.contact-item {
  background: var(--bg-white);
  padding: 2rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  text-align: center;
  border: 1px solid transparent;
}

.contact-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary-light);
}

.contact-item h3 {
  color: var(--primary);
  margin-bottom: 0.8rem;
}

.contact-item a {
  font-weight: 600;
}

/* ===== Footer ===== */
footer {
  background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
  color: rgba(255, 255, 255, 0.7);
  padding: 3rem 1.5rem 2rem;
  text-align: center;
  margin-top: 2rem;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
}

.footer-brand p {
  color: rgba(255, 255, 255, 0.8);
  font-size: 1.1rem;
  font-weight: 600;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin: 1.5rem 0;
  flex-wrap: wrap;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.95rem;
  transition: all var(--transition);
}

.footer-links a:hover {
  color: var(--primary-light);
  text-decoration: none;
}

.footer-info p {
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.85rem;
  margin-bottom: 0.3rem;
}

/* ===== Back to Top Button ===== */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: 50%;
  width: 50px;
  height: 50px;
  display: none;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 4px 15px rgba(233, 69, 96, 0.3);
  z-index: 999;
  transition: all var(--transition);
  opacity: 0;
  transform: scale(0.8);
}

.back-to-top.visible {
  display: flex;
  opacity: 1;
  transform: scale(1);
}

.back-to-top:hover {
  background: var(--primary-dark);
  transform: scale(1.1) translateY(-3px);
  box-shadow: 0 8px 25px rgba(233, 69, 96, 0.4);
}

/* ===== Responsive Design ===== */
@media (max-width: 1024px) {
  .hero {
    flex-direction: column;
    text-align: center;
    padding: 2.5rem 1.5rem;
  }

  .hero-content p {
    margin: 0 auto 1rem;
  }

  .hero-actions {
    justify-content: center;
  }

  .hero-visual svg {
    max-width: 280px;
  }
}

@media (max-width: 768px) {
  nav {
    padding: 0.6rem 1rem;
  }

  .nav-menu {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 1rem;
    box-shadow: var(--shadow-md);
    border-bottom: 1px solid var(--glass-border);
    gap: 0.3rem;
    animation: slideDown 0.3s ease;
  }

  .nav-menu.active {
    display: flex;
  }

  .nav-menu a {
    padding: 0.8rem 1rem;
    border-radius: var(--radius-sm);
  }

  .menu-toggle {
    display: flex;
  }

  main {
    padding: 5rem 1rem 2rem;
  }

  section {
    margin-bottom: 2.5rem;
    padding: 1.5rem 0;
  }

  .hero {
    padding: 2rem 1.5rem;
    border-radius: var(--radius-md);
  }

  .hero-content h1 {
    font-size: 1.6rem;
  }

  .hero-visual svg {
    max-width: 200px;
  }

  .about,
  .guide {
    padding: 1.5rem;
  }

  .about-details,
  .features-list,
  .contact-details {
    grid-template-columns: 1fr;
  }

  .product-grid,
  .resource-grid {
    grid-template-columns: 1fr;
  }

  .features {
    padding: 2rem 1.5rem;
  }

  .feature-item {
    padding: 1.5rem;
  }

  .contact-item {
    padding: 1.5rem;
  }

  .footer-links {
    gap: 1rem;
    flex-direction: column;
    align-items: center;
  }

  .back-to-top {
    bottom: 1.5rem;
    right: 1.5rem;
    width: 44px;
    height: 44px;
  }
}

@media (max-width: 480px) {
  .hero-content h1 {
    font-size: 1.3rem;
  }

  .hero-content p {
    font-size: 0.95rem;
  }

  .btn-primary,
  .btn-secondary {
    padding: 0.7rem 1.4rem;
    font-size: 0.9rem;
  }

  .search-bar input {
    min-width: 140px;
  }
}

/* ===== Utility Classes ===== */
.glass-effect {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
}

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

/* ===== Print Styles ===== */
@media print {
  header,
  .back-to-top,
  .search-bar {
    display: none !important;
  }

  main {
    padding-top: 1rem;
  }

  .hero {
    background: none !important;
    color: #000 !important;
    box-shadow: none !important;
  }

  .hero-content h1 {
    color: #000 !important;
  }

  .hero-content p {
    color: #555 !important;
  }

  .features {
    background: none !important;
    color: #000 !important;
  }

  .feature-item {
    background: #f5f5f5 !important;
    border: 1px solid #ddd !important;
  }

  .feature-item h3 {
    color: #e94560 !important;
  }

  .feature-item p {
    color: #555 !important;
  }
}