/**
 * Layout Styles
 */

/* ============================================
   HEADER
   ============================================ */

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height-mobile);
  background-color: var(--color-primary);
  border-bottom: 1px solid var(--color-gray-700);
  z-index: var(--z-sticky);
  padding-top: var(--safe-area-top);
}

@media (min-width: 1024px) {
  .header {
    height: var(--header-height);
  }
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-4);
}

.header-logo {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--color-white);
}

.header-logo span {
  color: var(--color-accent);
}

/* Desktop Navigation */
.desktop-nav {
  display: none;
}

@media (min-width: 1024px) {
  .desktop-nav {
    display: flex;
    align-items: center;
    gap: var(--space-8);
  }
}

.nav-link {
  font-size: var(--text-sm);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-gray-100);
  transition: color var(--transition-fast);
}

.nav-link:hover {
  color: var(--color-accent);
}

/* Header Actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

/* Cart Button */
.cart-btn {
  position: relative;
}

.cart-badge {
  position: absolute;
  top: 2px;
  right: 2px;
  min-width: 18px;
  height: 18px;
  font-size: 10px;
}

/* Mobile Menu Button */
.mobile-menu-btn {
  display: flex;
}

@media (min-width: 1024px) {
  .mobile-menu-btn {
    display: none;
  }
}

/* ============================================
   MOBILE NAVIGATION DRAWER
   ============================================ */

.mobile-nav {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: 280px;
  max-width: 80vw;
  background-color: var(--color-primary);
  border-right: 1px solid var(--color-gray-700);
  z-index: calc(var(--z-drawer) + 1);
  transform: translateX(-100%);
  padding-top: var(--safe-area-top);
  display: flex;
  flex-direction: column;
  visibility: hidden;
}

/* Only enable transitions after page load */
.transitions-ready .mobile-nav {
  transition: transform var(--transition-base), visibility var(--transition-base);
  visibility: hidden;
}

.mobile-nav.open {
  transform: translateX(0);
  visibility: visible;
}

.transitions-ready .mobile-nav.open {
  visibility: visible;
}

.mobile-nav-header {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding: var(--space-4);
  border-bottom: 1px solid var(--color-gray-700);
}

.mobile-nav-links {
  flex: 1;
  padding: var(--space-4);
}

.mobile-nav-link {
  display: block;
  padding: var(--space-4) 0;
  font-size: var(--text-lg);
  font-weight: 500;
  color: var(--color-white);
  border-bottom: 1px solid var(--color-gray-700);
  min-height: 48px;
}

.mobile-nav-link:hover {
  color: var(--color-accent);
}

.mobile-nav-footer {
  padding: var(--space-4);
  padding-bottom: calc(var(--space-4) + var(--safe-area-bottom));
}

/* ============================================
   MAIN CONTENT
   ============================================ */

.main {
  padding-top: var(--header-height-mobile);
}

@media (min-width: 1024px) {
  .main {
    padding-top: var(--header-height);
  }
}

/* ============================================
   HERO SECTION
   ============================================ */

.hero {
  min-height: calc(100vh - var(--header-height-mobile));
  display: flex;
  align-items: center;
  padding: var(--space-8) 0;
  position: relative;
  background-color: var(--color-primary);
  /* Default: abstract relief pattern (mist/cooling effect) */
  background-image:
    radial-gradient(ellipse at 10% 90%, rgba(255, 255, 255, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 90% 10%, rgba(255, 255, 255, 0.12) 0%, transparent 45%),
    radial-gradient(ellipse at 50% 50%, rgba(0, 230, 118, 0.06) 0%, transparent 55%),
    radial-gradient(ellipse at 70% 70%, rgba(255, 255, 255, 0.05) 0%, transparent 40%),
    radial-gradient(ellipse at 30% 30%, rgba(200, 200, 200, 0.04) 0%, transparent 35%),
    linear-gradient(170deg, rgba(40, 40, 40, 1) 0%, rgba(15, 15, 15, 1) 50%, rgba(10, 10, 10, 1) 100%);
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

/* When a real hero image is added, use this class */
.hero.has-bg-image {
  background-image: url('../images/hero-bg.jpg');
}

/* Dark overlay for text readability over photo (only when real image is used) */
.hero.has-bg-image::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(10, 10, 10, 0.9) 0%,
    rgba(10, 10, 10, 0.65) 50%,
    rgba(10, 10, 10, 0.8) 100%
  );
  z-index: 1;
}

.hero > .container {
  position: relative;
  z-index: 2;
}

@media (min-width: 1024px) {
  .hero {
    min-height: calc(100vh - var(--header-height));
    padding: var(--space-16) 0;
  }
}

/* Container inside hero needs to be flex for side-by-side layout */
.hero > .container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-8);
  width: 100%;
}

@media (min-width: 768px) {
  .hero > .container {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

.hero-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: var(--space-4);
}

@media (min-width: 768px) {
  .hero-content {
    align-items: flex-start;
    text-align: left;
    padding-right: var(--space-8);
  }
}

.hero-image {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
}

.hero-image img {
  max-width: 300px;
  width: 100%;
  height: auto;
}

@media (min-width: 1024px) {
  .hero-image img {
    max-width: 400px;
  }
}

.hero-title {
  font-size: clamp(2.5rem, 8vw, 4rem);
  margin-bottom: var(--space-3);
  line-height: 1;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  background: linear-gradient(
    135deg,
    var(--color-white) 0%,
    var(--color-white) 40%,
    var(--color-accent) 100%
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: 0 0 80px rgba(0, 230, 118, 0.3);
  position: relative;
}

.hero-title::after {
  content: '';
  display: block;
  width: 80px;
  height: 4px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-secondary));
  margin-top: var(--space-4);
  border-radius: 2px;
}

@media (min-width: 768px) {
  .hero-title::after {
    margin-left: 0;
  }
}

@media (max-width: 767px) {
  .hero-title::after {
    margin-left: auto;
    margin-right: auto;
  }
}

.hero-tagline {
  font-size: var(--text-base);
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-4);
  font-weight: 500;
}

.hero-subtitle {
  font-size: var(--text-lg);
  color: var(--color-gray-100);
  margin-bottom: var(--space-6);
  max-width: 500px;
}

/* ============================================
   PRODUCT SECTION
   ============================================ */

.product-section {
  padding: var(--space-12) 0;
  background-color: var(--color-primary-light);
}

.product-grid {
  display: grid;
  gap: var(--space-8);
}

@media (min-width: 768px) {
  .product-grid {
    grid-template-columns: 1fr 1fr;
    align-items: center;
  }
}

.product-image-wrapper {
  display: flex;
  justify-content: center;
}

.product-image {
  max-width: 350px;
  width: 100%;
}

.product-info {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.product-title {
  font-size: var(--text-3xl);
}

.product-description {
  color: var(--color-gray-100);
}

.product-actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  margin-top: var(--space-4);
}

@media (min-width: 640px) {
  .product-actions {
    flex-direction: row;
    align-items: center;
  }
}

/* ============================================
   HOW IT WORKS SECTION
   ============================================ */

.how-it-works {
  padding: var(--space-16) 0;
}

.steps-grid {
  display: grid;
  gap: var(--space-8);
  margin-top: var(--space-8);
}

@media (min-width: 768px) {
  .steps-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.step {
  text-align: center;
  padding: var(--space-6);
}

.step-number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 60px;
  height: 60px;
  margin: 0 auto var(--space-4);
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  color: var(--color-black);
  background-color: var(--color-accent);
  border-radius: var(--radius-full);
}

.step-title {
  font-size: var(--text-xl);
  margin-bottom: var(--space-2);
}

.step-description {
  font-size: var(--text-sm);
  color: var(--color-gray-300);
}

/* ============================================
   INGREDIENTS SECTION
   ============================================ */

.ingredients-section {
  padding: var(--space-16) 0;
  background-color: var(--color-primary-light);
}

.ingredients-grid {
  display: grid;
  gap: var(--space-6);
  margin-top: var(--space-8);
}

@media (min-width: 768px) {
  .ingredients-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.ingredient-card {
  padding: var(--space-6);
  border: 1px solid var(--color-gray-700);
  border-radius: var(--radius-md);
  text-align: center;
}

.ingredient-card.featured {
  border-color: var(--color-accent);
  background-color: rgba(0, 230, 118, 0.05);
}

.ingredient-name {
  font-size: var(--text-xl);
  margin-bottom: var(--space-2);
}

.ingredient-purpose {
  font-size: var(--text-sm);
  color: var(--color-gray-300);
}

/* ============================================
   FAQ SECTION
   ============================================ */

.faq-section {
  padding: var(--space-16) 0;
}

.faq-list {
  max-width: 800px;
  margin: var(--space-8) auto 0;
}

.faq-item {
  border-bottom: 1px solid var(--color-gray-700);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: var(--space-5) 0;
  font-size: var(--text-lg);
  font-weight: 500;
  text-align: left;
  color: var(--color-white);
  background: none;
  cursor: pointer;
}

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

.faq-icon {
  font-size: var(--text-2xl);
  color: var(--color-accent);
  transition: transform var(--transition-fast);
}

.faq-item.open .faq-icon {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-base);
}

.faq-item.open .faq-answer {
  max-height: 500px;
}

.faq-answer-inner {
  padding-bottom: var(--space-5);
  color: var(--color-gray-100);
}

/* ============================================
   FOOTER
   ============================================ */

.footer {
  padding: var(--space-12) 0;
  padding-bottom: calc(var(--space-12) + var(--safe-area-bottom));
  background-color: var(--color-primary-dark);
  border-top: 1px solid var(--color-gray-700);
}

.footer-grid {
  display: grid;
  gap: var(--space-8);
}

@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr;
  }
}

.footer-brand {
  max-width: 300px;
}

.footer-logo {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  margin-bottom: var(--space-4);
}

.footer-logo span {
  color: var(--color-accent);
}

.footer-tagline {
  font-size: var(--text-sm);
  color: var(--color-gray-300);
}

.footer-heading {
  font-size: var(--text-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-secondary);
  margin-bottom: var(--space-4);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer-link {
  font-size: var(--text-sm);
  color: var(--color-gray-300);
}

.footer-link:hover {
  color: var(--color-accent);
}

.footer-bottom {
  margin-top: var(--space-8);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-gray-700);
  text-align: center;
}

.footer-disclaimer {
  font-size: var(--text-xs);
  color: var(--color-gray-500);
  max-width: 600px;
  margin: 0 auto var(--space-4);
}

.footer-copyright {
  font-size: var(--text-sm);
  color: var(--color-gray-500);
}

/* ============================================
   CART DRAWER
   ============================================ */

.cart-drawer {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  max-height: 80vh;
  background-color: var(--color-primary);
  border-top: 1px solid var(--color-gray-700);
  border-top-left-radius: var(--radius-lg);
  border-top-right-radius: var(--radius-lg);
  z-index: calc(var(--z-drawer) + 1);
  transform: translateY(100%);
  display: flex;
  flex-direction: column;
  visibility: hidden;
}

/* Only enable transitions after page load */
.transitions-ready .cart-drawer {
  transition: transform var(--transition-base), visibility var(--transition-base);
}

.cart-drawer.open {
  transform: translateY(0);
  visibility: visible;
}

@media (min-width: 768px) {
  .cart-drawer {
    top: 0;
    bottom: 0;
    left: auto;
    right: 0;
    max-height: none;
    width: 400px;
    border-top-left-radius: 0;
    border-top-right-radius: 0;
    border-left: 1px solid var(--color-gray-700);
    border-top: none;
    transform: translateX(100%);
  }

  .cart-drawer.open {
    transform: translateX(0);
  }
}

.cart-drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-6);
  border-bottom: 1px solid var(--color-gray-700);
}

.cart-drawer-title {
  font-size: var(--text-xl);
}

.cart-drawer-body {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-4) var(--space-6);
}

.cart-empty {
  text-align: center;
  padding: var(--space-8);
  color: var(--color-gray-300);
}

.cart-item {
  display: flex;
  gap: var(--space-4);
  padding: var(--space-4) 0;
  border-bottom: 1px solid var(--color-gray-700);
}

.cart-item-image {
  width: 80px;
  height: 80px;
  background-color: var(--color-primary-light);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}

.cart-item-image img {
  max-width: 60px;
  max-height: 60px;
}

.cart-item-details {
  flex: 1;
}

.cart-item-name {
  font-weight: 600;
  margin-bottom: var(--space-1);
}

.cart-item-price {
  font-size: var(--text-sm);
  color: var(--color-gray-300);
  margin-bottom: var(--space-2);
}

.cart-item-actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.cart-item-remove {
  font-size: var(--text-sm);
  color: var(--color-error);
  background: none;
  border: none;
  cursor: pointer;
}

.cart-item-remove:hover {
  text-decoration: underline;
}

.cart-drawer-footer {
  padding: var(--space-4) var(--space-6);
  padding-bottom: calc(var(--space-4) + var(--safe-area-bottom));
  border-top: 1px solid var(--color-gray-700);
}

.cart-subtotal {
  display: flex;
  justify-content: space-between;
  margin-bottom: var(--space-4);
  font-size: var(--text-lg);
  font-weight: 600;
}

/* ============================================
   STICKY ADD TO CART (MOBILE)
   ============================================ */

.sticky-atc {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-3) var(--space-4);
  padding-bottom: calc(var(--space-3) + var(--safe-area-bottom));
  background-color: var(--color-primary);
  border-top: 1px solid var(--color-gray-700);
  z-index: var(--z-sticky);
  transform: translateY(100%);
}

/* Only enable transitions after page load */
.transitions-ready .sticky-atc {
  transition: transform var(--transition-base);
}

.sticky-atc.visible {
  transform: translateY(0);
}

.sticky-atc-price {
  font-size: var(--text-xl);
  font-weight: 700;
}

.sticky-atc .btn {
  flex: 1;
  max-width: 200px;
}

@media (min-width: 1024px) {
  .sticky-atc {
    display: none;
  }
}

/* ============================================
   SECTION UTILITIES
   ============================================ */

.section-header {
  text-align: center;
  margin-bottom: var(--space-8);
}

.section-title {
  font-size: var(--text-4xl);
  margin-bottom: var(--space-2);
}

.section-subtitle {
  font-size: var(--text-lg);
  color: var(--color-gray-300);
  max-width: 600px;
  margin: 0 auto;
}