@import url('https://fonts.googleapis.com/css2?family=Sora:wght@300;400;500;600;700&display=swap');

*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --color-bg: #EDEAE4;
  --color-bg-light: #F5F3EF;
  --color-text: #1A1A1A;
  --color-text-secondary: #6B6560;
  --color-accent: #3D3833;
  --color-border: #D4D0C8;
  --color-white: #FFFFFF;
  --color-olive: #8B9A3B;
  --color-gold: #D4A843;
  --color-wine: #B56B6B;
  --font-main: 'Sora', sans-serif;
  --max-width: 1280px;
  --section-padding: 100px 60px;
  --radius: 16px;
  --radius-sm: 8px;
  --radius-lg: 24px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

a {
  color: inherit;
  text-decoration: none;
}

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

button {
  font-family: var(--font-main);
  cursor: pointer;
  border: none;
  background: none;
}

ul { list-style: none; }

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 60px;
}

/* ========== NAV ========== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 20px 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: background var(--transition), box-shadow var(--transition);
}

.nav--scrolled {
  background: rgba(237, 234, 228, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 var(--color-border);
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.nav__logo-icon {
  display: flex;
  gap: 2px;
  align-items: flex-end;
  height: 20px;
}

.nav__logo-bar {
  width: 3px;
  background: var(--color-text);
  border-radius: 2px;
}

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

.nav__link {
  padding: 10px 20px;
  font-size: 0.875rem;
  font-weight: 400;
  border-radius: 100px;
  transition: background var(--transition), color var(--transition);
  color: var(--color-text-secondary);
}

.nav__link:hover,
.nav__link--active {
  background: var(--color-accent);
  color: var(--color-white);
}

.nav__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 28px;
  padding: 4px 0;
}

.nav__hamburger span {
  display: block;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: var(--transition);
}

.nav__mobile-menu {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-bg);
  z-index: 99;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 24px;
}

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

.nav__mobile-link {
  font-size: 1.5rem;
  font-weight: 500;
  color: var(--color-text);
}

/* ========== HERO ========== */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 120px 60px 80px;
  position: relative;
  overflow: hidden;
}

.hero__title {
  font-size: clamp(4rem, 10vw, 9rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 0.9;
  color: var(--color-text);
}

.hero__subtitle {
  font-size: clamp(2rem, 5vw, 4.5rem);
  font-weight: 300;
  letter-spacing: -0.02em;
  color: var(--color-text-secondary);
  margin-top: 8px;
}

.hero__image {
  margin-top: 40px;
  max-width: 500px;
  width: 100%;
  animation: heroFloat 6s ease-in-out infinite;
}

@keyframes heroFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-16px); }
}

/* ========== CAROUSEL / COLOR PICKER ========== */
.carousel {
  padding: var(--section-padding);
  text-align: center;
}

.carousel__title {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 600;
  letter-spacing: -0.03em;
  margin-bottom: 12px;
}

.carousel__subtitle {
  font-size: 1rem;
  color: var(--color-text-secondary);
  max-width: 500px;
  margin: 0 auto 48px;
}

.carousel__image-wrapper {
  position: relative;
  max-width: 500px;
  margin: 0 auto 40px;
  height: 500px;
}

.carousel__image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  opacity: 0;
  transition: opacity 0.5s ease;
}

.carousel__image.active { opacity: 1; }

.carousel__colors {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-bottom: 16px;
}

.carousel__color-label {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  margin-bottom: 40px;
}

.carousel__dot {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 3px solid transparent;
  cursor: pointer;
  transition: border-color var(--transition), transform var(--transition);
  position: relative;
}

.carousel__dot::after {
  content: '';
  position: absolute;
  inset: 4px;
  border-radius: 50%;
}

.carousel__dot--olive::after { background: #8B9A3B; }
.carousel__dot--gold::after { background: #D4A843; }
.carousel__dot--wine::after { background: #B56B6B; }

.carousel__dot.active {
  border-color: var(--color-text);
  transform: scale(1.1);
}

/* ========== FEATURES ========== */
.features {
  padding: var(--section-padding);
}

.features__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.features__card {
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
  min-height: 400px;
  display: flex;
  align-items: flex-end;
  padding: 32px;
}

.features__card-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.features__card-text {
  position: relative;
  z-index: 1;
  font-size: 1.125rem;
  font-weight: 500;
  line-height: 1.4;
  color: var(--color-text);
  max-width: 320px;
}

.features__card--wide {
  grid-column: 1 / -1;
}

/* ========== DETAILS ========== */
.details {
  padding: var(--section-padding);
  text-align: center;
}

.details__title {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 600;
  letter-spacing: -0.03em;
  margin-bottom: 12px;
}

.details__subtitle {
  font-size: 1rem;
  color: var(--color-text-secondary);
  max-width: 440px;
  margin: 0 auto 48px;
}

.details__scroll {
  display: flex;
  gap: 16px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  padding-bottom: 16px;
  scrollbar-width: none;
}

.details__scroll::-webkit-scrollbar { display: none; }

.details__item {
  flex: 0 0 320px;
  scroll-snap-align: start;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 1;
}

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

/* ========== DESERT CTA ========== */
.desert-cta {
  margin: 0 60px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
  min-height: 600px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  padding: 80px 40px;
  text-align: center;
}

.desert-cta__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.desert-cta__content {
  position: relative;
  z-index: 1;
}

.desert-cta__title {
  font-size: clamp(2.5rem, 6vw, 5rem);
  font-weight: 700;
  color: var(--color-white);
  letter-spacing: -0.03em;
  margin-bottom: 16px;
}

.desert-cta__price {
  font-size: 1.125rem;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 28px;
}

.desert-cta__btn {
  display: inline-block;
  padding: 14px 36px;
  background: var(--color-white);
  color: var(--color-text);
  font-size: 0.9375rem;
  font-weight: 500;
  border-radius: 100px;
  transition: transform var(--transition), box-shadow var(--transition);
}

.desert-cta__btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

/* ========== BRAND FOOTER ========== */
.brand-footer {
  padding: 80px 60px;
  text-align: center;
}

.brand-footer__title {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 600;
  letter-spacing: -0.03em;
  margin-bottom: 16px;
}

.brand-footer__text {
  font-size: 1rem;
  color: var(--color-text-secondary);
  max-width: 480px;
  margin: 0 auto 32px;
  line-height: 1.7;
}

.brand-footer__products {
  display: flex;
  justify-content: center;
  gap: 12px;
}

.brand-footer__product-link {
  padding: 10px 24px;
  border: 1px solid var(--color-border);
  border-radius: 100px;
  font-size: 0.875rem;
  font-weight: 500;
  transition: background var(--transition), color var(--transition);
}

.brand-footer__product-link:hover {
  background: var(--color-accent);
  color: var(--color-white);
  border-color: var(--color-accent);
}

/* ========== FOOTER ========== */
.footer {
  padding: 32px 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--color-border);
}

.footer__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.125rem;
  font-weight: 600;
}

.footer__logo-icon {
  display: flex;
  gap: 2px;
  align-items: flex-end;
  height: 18px;
}

.footer__logo-bar {
  width: 2.5px;
  background: var(--color-text);
  border-radius: 2px;
}

.footer__copy {
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
}

/* ========== COMPARE PAGE ========== */
.compare-hero {
  padding: 140px 60px 60px;
  text-align: center;
}

.compare-hero__title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 600;
  letter-spacing: -0.03em;
  margin-bottom: 12px;
}

.compare-hero__subtitle {
  font-size: 1rem;
  color: var(--color-text-secondary);
}

.compare-grid {
  padding: 0 60px 80px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  max-width: var(--max-width);
  margin: 0 auto;
}

.product-card {
  background: var(--color-bg-light);
  border-radius: var(--radius-lg);
  overflow: hidden;
  padding: 40px;
}

.product-card__image-wrap {
  display: flex;
  justify-content: center;
  margin-bottom: 24px;
}

.product-card__image {
  max-width: 240px;
  width: 100%;
}

.product-card__name {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.product-card__price {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  margin-bottom: 20px;
}

.product-card__btn {
  display: inline-block;
  padding: 12px 28px;
  background: var(--color-accent);
  color: var(--color-white);
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: 100px;
  transition: transform var(--transition);
  margin-bottom: 32px;
}

.product-card__btn:hover {
  transform: translateY(-2px);
}

.product-card__features {
  display: flex;
  flex-direction: column;
  gap: 16px;
  border-top: 1px solid var(--color-border);
  padding-top: 24px;
}

.product-card__feature {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.product-card__feature-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  margin-top: 2px;
}

.product-card__feature-text {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

.product-card__feature--none {
  opacity: 0.4;
}

/* ========== TECH SPECS PAGE ========== */
.specs-hero {
  padding: 140px 60px 60px;
  text-align: center;
}

.specs-hero__title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 600;
  letter-spacing: -0.03em;
  margin-bottom: 12px;
}

.specs-hero__subtitle {
  font-size: 1rem;
  color: var(--color-text-secondary);
}

.specs-color {
  padding: 0 60px 60px;
  text-align: center;
}

.specs-color__image {
  max-width: 400px;
  margin: 0 auto 32px;
}

.specs-color__options {
  display: flex;
  justify-content: center;
  gap: 16px;
}

.specs-list {
  padding: 0 60px 80px;
  max-width: var(--max-width);
  margin: 0 auto;
}

.specs-list__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border-top: 1px solid var(--color-border);
}

.specs-list__item {
  padding: 24px 0;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.specs-list__item:nth-child(odd) {
  padding-right: 40px;
  border-right: 1px solid var(--color-border);
}

.specs-list__item:nth-child(even) {
  padding-left: 40px;
}

.specs-list__label {
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.specs-list__value {
  font-size: 1rem;
  font-weight: 500;
}

/* ========== AI CHATBOT ========== */
.chatbot-toggle {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--color-accent);
  color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
  transition: transform var(--transition);
}

.chatbot-toggle:hover { transform: scale(1.08); }

.chatbot-toggle svg {
  width: 24px;
  height: 24px;
}

.chatbot {
  position: fixed;
  bottom: 96px;
  right: 28px;
  width: 380px;
  max-height: 520px;
  background: var(--color-white);
  border-radius: var(--radius);
  box-shadow: 0 12px 48px rgba(0, 0, 0, 0.12);
  z-index: 200;
  display: none;
  flex-direction: column;
  overflow: hidden;
}

.chatbot.active { display: flex; }

.chatbot__header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.chatbot__header-title {
  font-size: 0.9375rem;
  font-weight: 600;
}

.chatbot__header-sub {
  font-size: 0.75rem;
  color: var(--color-text-secondary);
}

.chatbot__close {
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: background var(--transition);
}

.chatbot__close:hover { background: var(--color-bg); }

.chatbot__messages {
  flex: 1;
  overflow-y: auto;
  padding: 20px 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  min-height: 300px;
  max-height: 360px;
}

.chatbot__message {
  max-width: 85%;
  padding: 12px 16px;
  border-radius: 16px;
  font-size: 0.875rem;
  line-height: 1.5;
  animation: msgFade 0.3s ease;
}

@keyframes msgFade {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.chatbot__message--bot {
  align-self: flex-start;
  background: var(--color-bg);
  color: var(--color-text);
  border-bottom-left-radius: 4px;
}

.chatbot__message--user {
  align-self: flex-end;
  background: var(--color-accent);
  color: var(--color-white);
  border-bottom-right-radius: 4px;
}

.chatbot__message--typing {
  align-self: flex-start;
  background: var(--color-bg);
  padding: 16px 20px;
  border-bottom-left-radius: 4px;
}

.chatbot__typing-dots {
  display: flex;
  gap: 4px;
}

.chatbot__typing-dots span {
  width: 6px;
  height: 6px;
  background: var(--color-text-secondary);
  border-radius: 50%;
  animation: dotBounce 1.4s infinite;
}

.chatbot__typing-dots span:nth-child(2) { animation-delay: 0.2s; }
.chatbot__typing-dots span:nth-child(3) { animation-delay: 0.4s; }

@keyframes dotBounce {
  0%, 60%, 100% { transform: translateY(0); }
  30% { transform: translateY(-6px); }
}

.chatbot__input-area {
  padding: 16px 24px;
  border-top: 1px solid var(--color-border);
  display: flex;
  gap: 8px;
}

.chatbot__input {
  flex: 1;
  padding: 10px 16px;
  border: 1px solid var(--color-border);
  border-radius: 100px;
  font-family: var(--font-main);
  font-size: 0.875rem;
  outline: none;
  transition: border-color var(--transition);
  background: transparent;
}

.chatbot__input:focus { border-color: var(--color-accent); }

.chatbot__send {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--color-accent);
  color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: transform var(--transition);
}

.chatbot__send:hover { transform: scale(1.05); }

.chatbot__send svg {
  width: 18px;
  height: 18px;
}

/* ========== RESPONSIVE ========== */
@media (max-width: 768px) {
  :root {
    --section-padding: 60px 24px;
  }

  .container { padding: 0 24px; }

  .nav {
    padding: 16px 24px;
  }

  .nav__links { display: none; }

  .nav__hamburger { display: flex; }

  .hero {
    padding: 100px 24px 60px;
    min-height: auto;
  }

  .hero__title { font-size: 3.5rem; }
  .hero__subtitle { font-size: 1.75rem; }
  .hero__image { max-width: 300px; }

  .carousel { padding: 60px 24px; }
  .carousel__image-wrapper { height: 320px; }

  .features { padding: 60px 24px; }
  .features__grid {
    grid-template-columns: 1fr;
  }

  .features__card { min-height: 300px; }

  .details { padding: 60px 24px; }
  .details__item { flex: 0 0 260px; }

  .desert-cta {
    margin: 0 24px;
    min-height: 450px;
    padding: 60px 24px;
  }

  .brand-footer { padding: 60px 24px; }

  .footer {
    padding: 24px;
    flex-direction: column;
    gap: 12px;
  }

  .compare-hero { padding: 100px 24px 40px; }

  .compare-grid {
    padding: 0 24px 60px;
    grid-template-columns: 1fr;
  }

  .product-card { padding: 28px; }

  .specs-hero { padding: 100px 24px 40px; }
  .specs-color { padding: 0 24px 40px; }
  .specs-color__image { max-width: 280px; }
  .specs-list { padding: 0 24px 60px; }

  .specs-list__grid {
    grid-template-columns: 1fr;
  }

  .specs-list__item:nth-child(odd) {
    padding-right: 0;
    border-right: none;
  }

  .specs-list__item:nth-child(even) {
    padding-left: 0;
  }

  .chatbot {
    right: 16px;
    left: 16px;
    bottom: 88px;
    width: auto;
  }

  .chatbot-toggle {
    bottom: 20px;
    right: 20px;
  }
}

@media (max-width: 420px) {
  .hero__title { font-size: 2.5rem; }
  .hero__subtitle { font-size: 1.25rem; }
  .carousel__image-wrapper { height: 260px; }
  .details__item { flex: 0 0 220px; }
}