/* ===================================
   BeardedDragon Shop — Style Sheet
   Phong cách: Tối giản, Tự nhiên, Cao cấp
   =================================== */

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

:root {
  /* Earthy, natural palette */
  --clr-bg: #0d0f0e;
  --clr-bg-alt: #141917;
  --clr-surface: #1a1f1c;
  --clr-surface-hover: #222923;
  --clr-border: rgba(167, 189, 134, 0.12);
  --clr-border-hover: rgba(167, 189, 134, 0.25);

  --clr-text: #e8ece5;
  --clr-text-secondary: #9ca89a;
  --clr-text-muted: #6b7769;

  --clr-accent: #a7bd86;
  --clr-accent-bright: #c4d9a0;
  --clr-accent-dark: #7a9454;

  --clr-warm: #c9a96e;
  --clr-warm-bright: #dfc48e;

  /* Gradients */
  --grad-hero: linear-gradient(135deg, #0d0f0e 0%, #1a2518 50%, #0d0f0e 100%);
  --grad-card: linear-gradient(145deg, rgba(26, 31, 28, 0.8) 0%, rgba(20, 25, 23, 0.95) 100%);
  --grad-accent: linear-gradient(135deg, var(--clr-accent-dark), var(--clr-accent));

  /* Typography */
  --ff-main: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;

  /* Spacing */
  --section-padding: 100px 0;

  /* Border radius */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;

  /* Transitions */
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--ff-main);
  background-color: var(--clr-bg);
  color: var(--clr-text);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

ul {
  list-style: none;
}

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

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 32px;
  border-radius: 50px;
  font-family: var(--ff-main);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  letter-spacing: 0.3px;
}

.btn-primary {
  background: var(--grad-accent);
  color: #0d0f0e;
  box-shadow: 0 4px 20px rgba(167, 189, 134, 0.25);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(167, 189, 134, 0.4);
}

.btn-outline {
  background: transparent;
  color: var(--clr-accent);
  border: 1.5px solid var(--clr-border-hover);
}

.btn-outline:hover {
  background: rgba(167, 189, 134, 0.08);
  border-color: var(--clr-accent);
  transform: translateY(-2px);
}

/* --- HEADER --- */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 0 40px;
  background: rgba(13, 15, 14, 0.7);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--clr-border);
  transition: var(--transition);
}

header.scrolled {
  background: rgba(13, 15, 14, 0.92);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  font-size: 1.2rem;
  font-weight: 800;
  letter-spacing: 2px;
  color: var(--clr-accent);
}

nav ul {
  display: flex;
  gap: 8px;
}

nav a {
  display: block;
  padding: 8px 20px;
  border-radius: 50px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--clr-text-secondary);
  transition: var(--transition);
}

nav a:hover,
nav a.active {
  color: var(--clr-text);
  background: rgba(167, 189, 134, 0.1);
}

.mobile-menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.mobile-menu-btn span {
  width: 24px;
  height: 2px;
  background: var(--clr-text);
  border-radius: 2px;
  transition: var(--transition);
}

/* --- HERO --- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 120px 40px 80px;
  background: var(--grad-hero);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -200px;
  right: -200px;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(167, 189, 134, 0.08) 0%, transparent 70%);
  animation: floatOrb 8s ease-in-out infinite;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -150px;
  left: -150px;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(201, 169, 110, 0.06) 0%, transparent 70%);
  animation: floatOrb 10s ease-in-out infinite reverse;
}

@keyframes floatOrb {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(30px, -30px) scale(1.05); }
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 720px;
}

.hero-badge {
  display: inline-block;
  padding: 8px 20px;
  border-radius: 50px;
  background: rgba(167, 189, 134, 0.1);
  border: 1px solid var(--clr-border);
  color: var(--clr-accent);
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 28px;
  animation: fadeInUp 0.8s ease-out;
}

.hero h1 {
  font-size: clamp(3rem, 7vw, 5.5rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 24px;
  letter-spacing: -1px;
  animation: fadeInUp 0.8s ease-out 0.2s both;
}

.hero h1 .accent {
  background: var(--grad-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 1.15rem;
  color: var(--clr-text-secondary);
  line-height: 1.8;
  margin-bottom: 40px;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
  animation: fadeInUp 0.8s ease-out 0.4s both;
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  margin-bottom: 60px;
  animation: fadeInUp 0.8s ease-out 0.6s both;
}

.hero-stats {
  display: flex;
  gap: 48px;
  justify-content: center;
  animation: fadeInUp 0.8s ease-out 0.8s both;
}

.stat {
  text-align: center;
}

.stat-number {
  display: block;
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--clr-accent);
  margin-bottom: 4px;
}

.stat-label {
  font-size: 0.8rem;
  color: var(--clr-text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* --- Section Headers --- */
.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-tag {
  display: inline-block;
  padding: 6px 16px;
  border-radius: 50px;
  background: rgba(167, 189, 134, 0.1);
  border: 1px solid var(--clr-border);
  color: var(--clr-accent);
  font-size: 0.8rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 16px;
}

.section-header h2 {
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 700;
  margin-bottom: 12px;
  letter-spacing: -0.5px;
}

.section-header p {
  font-size: 1.05rem;
  color: var(--clr-text-secondary);
}

/* --- PRODUCTS --- */
.products-section {
  padding: var(--section-padding);
  padding-left: 40px;
  padding-right: 40px;
  max-width: 1280px;
  margin: 0 auto;
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

/* Product Card */
.product-card {
  background: var(--grad-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition-slow);
  cursor: pointer;
  position: relative;
}

.product-card:hover {
  transform: translateY(-8px);
  border-color: var(--clr-border-hover);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3),
              0 0 40px rgba(167, 189, 134, 0.06);
}

.product-card .card-image {
  position: relative;
  height: 260px;
  overflow: hidden;
}

.product-card .card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-slow);
}

.product-card:hover .card-image img {
  transform: scale(1.08);
}

.product-card .card-badge {
  position: absolute;
  top: 16px;
  left: 16px;
  padding: 5px 14px;
  border-radius: 50px;
  background: rgba(13, 15, 14, 0.75);
  backdrop-filter: blur(10px);
  color: var(--clr-accent);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.product-card .card-body {
  padding: 24px;
}

.product-card .card-title {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.product-card .card-desc {
  font-size: 0.88rem;
  color: var(--clr-text-secondary);
  line-height: 1.6;
  margin-bottom: 20px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.product-card .card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.product-card .card-price {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--clr-warm-bright);
}

.product-card .card-price .unit {
  font-size: 0.8rem;
  font-weight: 400;
  color: var(--clr-text-muted);
}

.product-card .card-btn {
  padding: 10px 22px;
  border-radius: 50px;
  background: var(--grad-accent);
  color: #0d0f0e;
  font-family: var(--ff-main);
  font-size: 0.82rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: var(--transition);
}

.product-card .card-btn:hover {
  box-shadow: 0 4px 16px rgba(167, 189, 134, 0.35);
  transform: translateY(-1px);
}

/* --- SERVICES --- */
.services-section {
  padding: var(--section-padding);
  padding-left: 40px;
  padding-right: 40px;
  max-width: 1100px;
  margin: 0 auto;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 20px;
}

.service-card {
  background: var(--grad-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  text-align: center;
  transition: var(--transition);
}

.service-card:hover {
  border-color: var(--clr-border-hover);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.2);
}

.service-icon {
  font-size: 2.5rem;
  margin-bottom: 20px;
}

.service-card h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 10px;
}

.service-card p {
  font-size: 0.88rem;
  color: var(--clr-text-secondary);
  line-height: 1.7;
}

/* --- CONTACT --- */
.contact-section {
  padding: var(--section-padding);
  padding-left: 40px;
  padding-right: 40px;
  max-width: 1100px;
  margin: 0 auto;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 20px;
  border-radius: var(--radius-md);
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  margin-bottom: 16px;
  transition: var(--transition);
}

.contact-item:hover {
  border-color: var(--clr-border-hover);
}

.contact-icon {
  font-size: 1.6rem;
  flex-shrink: 0;
  margin-top: 2px;
}

.contact-item h4 {
  font-size: 0.92rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.contact-item p {
  font-size: 0.88rem;
  color: var(--clr-text-secondary);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 16px 20px;
  border-radius: var(--radius-md);
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  color: var(--clr-text);
  font-family: var(--ff-main);
  font-size: 0.92rem;
  transition: var(--transition);
  outline: none;
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
  color: var(--clr-text-muted);
}

.contact-form input:focus,
.contact-form textarea:focus {
  border-color: var(--clr-accent);
  box-shadow: 0 0 0 3px rgba(167, 189, 134, 0.1);
}

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

.contact-form .btn {
  align-self: flex-start;
}

/* --- FOOTER --- */
footer {
  background: var(--clr-bg-alt);
  border-top: 1px solid var(--clr-border);
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 60px 40px 40px;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
}

.footer-brand .logo {
  margin-bottom: 12px;
}

.footer-brand p {
  font-size: 0.9rem;
  color: var(--clr-text-secondary);
}

.footer-links h4,
.footer-social h4 {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--clr-text);
}

.footer-links ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  font-size: 0.88rem;
  color: var(--clr-text-secondary);
}

.footer-links a:hover {
  color: var(--clr-accent);
}

.social-icons {
  display: flex;
  gap: 12px;
}

.social-icons a {
  font-size: 1.4rem;
  transition: var(--transition);
}

.social-icons a:hover {
  transform: scale(1.2);
}

.footer-bottom {
  text-align: center;
  padding: 20px 40px;
  border-top: 1px solid var(--clr-border);
}

.footer-bottom p {
  font-size: 0.82rem;
  color: var(--clr-text-muted);
}

/* --- Scroll animations --- */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

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

/* --- RESPONSIVE --- */
@media (max-width: 768px) {
  header {
    padding: 0 20px;
  }

  .mobile-menu-btn {
    display: flex;
  }

  nav {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    width: 100%;
    background: rgba(13, 15, 14, 0.95);
    backdrop-filter: blur(20px);
    padding: 20px;
    border-bottom: 1px solid var(--clr-border);
  }

  nav.open {
    display: block;
  }

  nav ul {
    flex-direction: column;
    gap: 4px;
  }

  nav a {
    padding: 12px 20px;
  }

  .hero {
    padding: 120px 24px 60px;
    min-height: auto;
  }

  .hero h1 {
    font-size: 2.8rem;
  }

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

  .hero-stats {
    gap: 24px;
  }

  .products-section,
  .services-section,
  .contact-section {
    padding: 60px 20px;
  }

  .products-grid {
    grid-template-columns: 1fr;
  }

  .services-grid {
    grid-template-columns: 1fr 1fr;
  }

  .contact-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 40px 20px;
  }
}

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

  .hero h1 {
    font-size: 2.2rem;
  }

  .hero-stats {
    flex-direction: column;
    gap: 16px;
  }
}