/* ==========================================================================
   VOLTIX ENERGY - CORE DESIGN SYSTEM & STYLESHEET
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800;900&family=Syne:wght@700;800;900&family=Space+Grotesk:wght@500;700&display=swap');

:root {
  /* Flavor Theme: Default Electric Lime */
  --theme-primary: #00FF87;
  --theme-secondary: #60EFFF;
  --theme-glow: rgba(0, 255, 135, 0.45);
  --theme-glow-soft: rgba(0, 255, 135, 0.15);
  --theme-gradient: linear-gradient(135deg, #00FF87 0%, #60EFFF 100%);
  --theme-badge-bg: rgba(0, 255, 135, 0.12);
  --theme-badge-border: rgba(0, 255, 135, 0.35);

  /* Core Dark Palette */
  --bg-deep: #06080B;
  --bg-dark: #0B0E14;
  --bg-card: rgba(18, 22, 32, 0.75);
  --bg-card-hover: rgba(26, 33, 48, 0.85);
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(255, 255, 255, 0.2);

  /* Typography Colors */
  --text-white: #FFFFFF;
  --text-primary: #F0F4F8;
  --text-secondary: #94A3B8;
  --text-muted: #64748B;

  /* Accent Accents */
  --danger: #FF3366;
  --warning: #FFB800;
  --success: #00E676;

  /* Typography */
  --font-display: 'Syne', sans-serif;
  --font-body: 'Outfit', sans-serif;
  --font-mono: 'Space Grotesk', monospace;

  /* Sizing & Radius */
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-full: 9999px;
  --transition-fast: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-smooth: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-theme: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Flavor Theme Overrides */
[data-flavor="lime"] {
  --theme-primary: #00FF87;
  --theme-secondary: #00e1d9;
  --theme-glow: rgba(0, 255, 135, 0.5);
  --theme-glow-soft: rgba(0, 255, 135, 0.15);
  --theme-gradient: linear-gradient(135deg, #00FF87 0%, #00e1d9 100%);
  --theme-badge-bg: rgba(0, 255, 135, 0.12);
  --theme-badge-border: rgba(0, 255, 135, 0.35);
}

[data-flavor="berry"] {
  --theme-primary: #C026D3;
  --theme-secondary: #7C3AED;
  --theme-glow: rgba(192, 38, 211, 0.5);
  --theme-glow-soft: rgba(192, 38, 211, 0.16);
  --theme-gradient: linear-gradient(135deg, #E879F9 0%, #A855F7 50%, #6366F1 100%);
  --theme-badge-bg: rgba(192, 38, 211, 0.14);
  --theme-badge-border: rgba(192, 38, 211, 0.4);
}

[data-flavor="orange"] {
  --theme-primary: #FF5722;
  --theme-secondary: #FFA000;
  --theme-glow: rgba(255, 87, 34, 0.52);
  --theme-glow-soft: rgba(255, 87, 34, 0.16);
  --theme-gradient: linear-gradient(135deg, #FF6F00 0%, #FF3D00 50%, #FF9100 100%);
  --theme-badge-bg: rgba(255, 87, 34, 0.14);
  --theme-badge-border: rgba(255, 87, 34, 0.4);
}

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

html {
  scroll-behavior: smooth;
  font-family: var(--font-body);
  background-color: var(--bg-deep);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

body {
  position: relative;
  min-height: 100vh;
  background: radial-gradient(circle at 50% 10%, rgba(20, 30, 48, 0.4) 0%, var(--bg-deep) 70%);
  overflow-x: hidden;
}

/* Background Particle Canvas */
#particle-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  z-index: 1;
}

/* Ambient glow blobs */
.ambient-glow {
  position: fixed;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  filter: blur(140px);
  opacity: 0.18;
  pointer-events: none;
  z-index: 0;
  transition: background var(--transition-theme), transform 1s ease;
  background: var(--theme-primary);
}

.glow-top-right {
  top: -150px;
  right: -100px;
}

.glow-bottom-left {
  bottom: 10%;
  left: -200px;
}

/* Container */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 2;
}

/* Typography Helpers */
h1, h2, h3, h4, .brand-font {
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.1;
  color: var(--text-white);
  letter-spacing: -0.02em;
}

.mono-font {
  font-family: var(--font-mono);
}

.gradient-text {
  background: var(--theme-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
  transition: background var(--transition-theme);
}

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 80px;
  z-index: 100;
  transition: all var(--transition-smooth);
}

.navbar.scrolled {
  background: rgba(11, 14, 20, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  height: 70px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo-wrapper {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.logo-icon {
  width: 36px;
  height: 36px;
  background: var(--theme-gradient);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 18px var(--theme-glow);
  transition: box-shadow var(--transition-theme), background var(--transition-theme);
}

.logo-icon svg {
  width: 20px;
  height: 20px;
  fill: #000;
}

.logo-text {
  font-family: var(--font-display);
  font-size: 1.7rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  color: var(--text-white);
}

.logo-sub {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  padding: 2px 6px;
  border-radius: 4px;
  background: var(--theme-badge-bg);
  border: 1px solid var(--theme-badge-border);
  color: var(--theme-primary);
  margin-left: 4px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-link {
  text-decoration: none;
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.95rem;
  transition: color var(--transition-fast);
  position: relative;
  padding: 6px 0;
}

.nav-link:hover, .nav-link.active {
  color: var(--text-white);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--theme-primary);
  box-shadow: 0 0 8px var(--theme-primary);
  transition: width var(--transition-fast);
}

.nav-link:hover::after, .nav-link.active::after {
  width: 100%;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.sound-toggle-btn {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  padding: 8px 12px;
  border-radius: var(--radius-full);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  transition: all var(--transition-fast);
}

.sound-toggle-btn:hover {
  border-color: var(--theme-primary);
  color: var(--text-white);
  box-shadow: 0 0 12px var(--theme-glow-soft);
}

.sound-toggle-btn.sound-on {
  border-color: var(--theme-badge-border);
  background: var(--theme-badge-bg);
  color: var(--theme-primary);
}

.cart-icon-btn {
  position: relative;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  color: var(--text-white);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.cart-icon-btn:hover {
  border-color: var(--theme-primary);
  box-shadow: 0 0 16px var(--theme-glow-soft);
  transform: translateY(-2px);
}

.cart-badge {
  position: absolute;
  top: -4px;
  right: -4px;
  background: var(--theme-primary);
  color: #000;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.72rem;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 10px var(--theme-glow);
}

.mobile-nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-white);
  cursor: pointer;
  padding: 8px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 28px;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 0.95rem;
  text-decoration: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-smooth);
  border: none;
  outline: none;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--theme-gradient);
  color: #05080E;
  font-weight: 800;
  box-shadow: 0 4px 20px var(--theme-glow);
}

.btn-primary:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 8px 30px var(--theme-glow);
}

.btn-primary:active {
  transform: translateY(0) scale(0.99);
}

.btn-outline {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-white);
  border: 1px solid var(--border-hover);
  backdrop-filter: blur(8px);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.09);
  border-color: var(--theme-primary);
  color: var(--theme-primary);
  box-shadow: 0 0 20px var(--theme-glow-soft);
  transform: translateY(-2px);
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  background: var(--theme-badge-bg);
  border: 1px solid var(--theme-badge-border);
  color: var(--theme-primary);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  transition: all var(--transition-theme);
}

.badge-pulse {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--theme-primary);
  box-shadow: 0 0 10px var(--theme-primary);
  animation: pulseDot 2s infinite ease-in-out;
}

@keyframes pulseDot {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.6); opacity: 0.5; }
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */
.hero-section {
  min-height: 100vh;
  padding-top: 130px;
  padding-bottom: 80px;
  position: relative;
  display: flex;
  align-items: center;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.95fr;
  align-items: center;
  gap: 40px;
}

.hero-content {
  position: relative;
  z-index: 3;
}

.hero-title {
  font-size: clamp(2.8rem, 5.5vw, 4.8rem);
  line-height: 1.02;
  margin: 20px 0;
  text-transform: uppercase;
}

.hero-title .highlight {
  display: block;
}

.hero-description {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 540px;
  margin-bottom: 32px;
  font-weight: 400;
  line-height: 1.7;
}

/* Flavor Selector Buttons */
.flavor-selector-box {
  background: rgba(18, 22, 32, 0.6);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  margin-bottom: 32px;
  max-width: 540px;
}

.flavor-selector-title {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 12px;
  display: flex;
  justify-content: space-between;
}

.flavor-buttons {
  display: flex;
  gap: 12px;
}

.flavor-btn {
  flex: 1;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  transition: all var(--transition-fast);
  color: var(--text-secondary);
}

.flavor-btn .flavor-color-pip {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  flex-shrink: 0;
}

.flavor-btn[data-select="lime"] .flavor-color-pip {
  background: #00FF87;
  box-shadow: 0 0 10px #00FF87;
}

.flavor-btn[data-select="berry"] .flavor-color-pip {
  background: #C026D3;
  box-shadow: 0 0 10px #C026D3;
}

.flavor-btn[data-select="orange"] .flavor-color-pip {
  background: #FF5722;
  box-shadow: 0 0 10px #FF5722;
}

.flavor-btn-info {
  display: flex;
  flex-direction: column;
  text-align: left;
}

.flavor-btn-name {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-white);
  line-height: 1.2;
}

.flavor-btn-tag {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-muted);
}

.flavor-btn:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--border-hover);
  transform: translateY(-2px);
}

.flavor-btn.active {
  background: var(--theme-badge-bg);
  border-color: var(--theme-primary);
  color: var(--text-white);
  box-shadow: 0 0 16px var(--theme-glow-soft);
}

/* Hero CTA group */
.hero-cta-group {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-guarantee {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--border-subtle);
  max-width: 540px;
}

.guarantee-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.guarantee-item svg {
  color: var(--theme-primary);
  width: 18px;
  height: 18px;
}

/* ==========================================================================
   HERO CAN 3D SHOWCASE STAGE
   ========================================================================== */
.hero-visual-stage {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 580px;
  perspective: 1200px;
}

.stage-glow-aura {
  position: absolute;
  width: 380px;
  height: 380px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--theme-primary) 0%, transparent 70%);
  opacity: 0.35;
  filter: blur(60px);
  z-index: 1;
  transition: all var(--transition-theme);
  animation: auraBreathe 4s infinite ease-in-out alternate;
}

@keyframes auraBreathe {
  0% { transform: scale(0.9) translate(-50%, -50%); opacity: 0.3; }
  100% { transform: scale(1.15) translate(-45%, -45%); opacity: 0.45; }
}

.stage-electric-rings {
  position: absolute;
  width: 440px;
  height: 440px;
  border-radius: 50%;
  border: 1px dashed var(--theme-primary);
  opacity: 0.3;
  z-index: 1;
  animation: rotateRing 25s linear infinite;
  transition: border-color var(--transition-theme);
}

.stage-electric-rings::before {
  content: '';
  position: absolute;
  inset: -20px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.05);
}

@keyframes rotateRing {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.can-3d-wrapper {
  position: relative;
  z-index: 3;
  width: 100%;
  max-width: 390px;
  transform-style: preserve-3d;
  cursor: grab;
  transition: transform 0.1s ease-out;
}

.can-3d-wrapper:active {
  cursor: grabbing;
}

.can-product-img {
  width: 100%;
  height: auto;
  display: block;
  filter: drop-shadow(0 25px 40px rgba(0, 0, 0, 0.8)) drop-shadow(0 0 35px var(--theme-glow));
  transition: filter var(--transition-theme), opacity 0.35s ease, transform 0.35s ease;
  user-select: none;
  -webkit-user-drag: none;
  border-radius: 18px;
}

.can-floating-particles {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 4;
}

/* Floating Metric Badges on Can Stage */
.floating-spec-badge {
  position: absolute;
  background: rgba(14, 18, 26, 0.85);
  backdrop-filter: blur(14px);
  border: 1px solid var(--border-hover);
  border-radius: var(--radius-md);
  padding: 10px 16px;
  z-index: 5;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.4);
  display: flex;
  align-items: center;
  gap: 12px;
  transition: all var(--transition-smooth);
  animation: floatSpec 4s infinite ease-in-out alternate;
}

.floating-spec-badge:hover {
  border-color: var(--theme-primary);
  box-shadow: 0 0 20px var(--theme-glow-soft);
  transform: scale(1.05);
}

.spec-badge-top-left {
  top: 10%;
  left: -20px;
  animation-delay: 0s;
}

.spec-badge-bottom-right {
  bottom: 12%;
  right: -20px;
  animation-delay: 2s;
}

@keyframes floatSpec {
  0% { transform: translateY(0px); }
  100% { transform: translateY(-12px); }
}

.spec-icon-box {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: var(--theme-badge-bg);
  color: var(--theme-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
}

.spec-text-val {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--text-white);
  line-height: 1.1;
}

.spec-text-lbl {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--text-secondary);
  text-transform: uppercase;
}

/* ==========================================================================
   METRICS MARQUEE STRIP
   ========================================================================== */
.marquee-strip {
  padding: 24px 0;
  background: rgba(255, 255, 255, 0.02);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  overflow: hidden;
  position: relative;
  z-index: 3;
}

.marquee-content {
  display: flex;
  gap: 48px;
  white-space: nowrap;
  animation: scrollMarquee 30s linear infinite;
}

.marquee-item {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  color: var(--text-primary);
  text-transform: uppercase;
}

.marquee-separator {
  color: var(--theme-primary);
  font-size: 1.4rem;
}

@keyframes scrollMarquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* ==========================================================================
   SECTION COMMON HEADERS
   ========================================================================== */
.section {
  padding: 120px 0;
  position: relative;
  z-index: 2;
}

.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 64px auto;
}

.section-header .badge {
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(2rem, 3.8vw, 3.2rem);
  margin-bottom: 18px;
  text-transform: uppercase;
}

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

/* ==========================================================================
   THE FORMULA & COMPARISON GRAPH
   ========================================================================== */
.formula-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
  margin-bottom: 60px;
}

.formula-card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 32px 24px;
  position: relative;
  overflow: hidden;
  transition: all var(--transition-smooth);
}

.formula-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--theme-gradient);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.formula-card:hover {
  transform: translateY(-8px);
  border-color: var(--theme-badge-border);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.4), 0 0 24px var(--theme-glow-soft);
  background: var(--bg-card-hover);
}

.formula-card:hover::before {
  opacity: 1;
}

.formula-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.05);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 1.8rem;
  border: 1px solid var(--border-subtle);
  transition: all var(--transition-fast);
}

.formula-card:hover .formula-icon {
  background: var(--theme-badge-bg);
  border-color: var(--theme-primary);
  box-shadow: 0 0 16px var(--theme-glow-soft);
  transform: scale(1.1);
}

.formula-dose {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--theme-primary);
  font-weight: 700;
  margin-bottom: 8px;
}

.formula-name {
  font-size: 1.3rem;
  margin-bottom: 12px;
}

.formula-desc {
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.6;
}

/* Energy Comparison Curve Chart */
.chart-container-box {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
}

.chart-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 30px;
  flex-wrap: wrap;
  gap: 20px;
}

.chart-title-group h3 {
  font-size: 1.5rem;
  margin-bottom: 6px;
}

.chart-title-group p {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.chart-legend {
  display: flex;
  gap: 24px;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  font-family: var(--font-mono);
}

.legend-line {
  width: 24px;
  height: 3px;
  border-radius: 2px;
}

.legend-voltix .legend-line {
  background: var(--theme-primary);
  box-shadow: 0 0 8px var(--theme-primary);
}

.legend-coffee .legend-line {
  background: #A855F7;
}

.legend-traditional .legend-line {
  background: #EF4444;
  border-bottom: 1px dashed #EF4444;
}

.canvas-chart-wrapper {
  position: relative;
  width: 100%;
  height: 280px;
}

#energy-curve-canvas {
  width: 100%;
  height: 100%;
  display: block;
}

/* ==========================================================================
   FLAVORS TRIO SHOWCASE
   ========================================================================== */
.flavors-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.flavor-product-card {
  background: var(--bg-card);
  backdrop-filter: blur(14px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 32px 24px 28px 24px;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
  transition: all var(--transition-smooth);
}

.flavor-product-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
}

.flavor-product-card[data-card-flavor="lime"]:hover {
  border-color: rgba(0, 255, 135, 0.4);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6), 0 0 30px rgba(0, 255, 135, 0.15);
}

.flavor-product-card[data-card-flavor="berry"]:hover {
  border-color: rgba(192, 38, 211, 0.4);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6), 0 0 30px rgba(192, 38, 211, 0.15);
}

.flavor-product-card[data-card-flavor="orange"]:hover {
  border-color: rgba(255, 87, 34, 0.4);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6), 0 0 30px rgba(255, 87, 34, 0.15);
}

.flavor-card-pill {
  position: absolute;
  top: 20px;
  right: 20px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  text-transform: uppercase;
}

.card-pill-lime {
  background: rgba(0, 255, 135, 0.15);
  border: 1px solid rgba(0, 255, 135, 0.4);
  color: #00FF87;
}

.card-pill-berry {
  background: rgba(192, 38, 211, 0.15);
  border: 1px solid rgba(192, 38, 211, 0.4);
  color: #F0ABFC;
}

.card-pill-orange {
  background: rgba(255, 87, 34, 0.15);
  border: 1px solid rgba(255, 87, 34, 0.4);
  color: #FF8A65;
}

.flavor-card-image-box {
  width: 100%;
  height: 320px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 10px 0 24px 0;
  position: relative;
}

.flavor-card-img {
  max-height: 100%;
  width: auto;
  max-width: 90%;
  object-fit: contain;
  transition: transform var(--transition-smooth);
  filter: drop-shadow(0 15px 25px rgba(0,0,0,0.7));
  border-radius: 12px;
}

.flavor-product-card:hover .flavor-card-img {
  transform: scale(1.06) rotate(-2deg);
}

.flavor-card-name {
  font-size: 1.5rem;
  margin-bottom: 8px;
}

.flavor-card-notes {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 18px;
  min-height: 44px;
}

.flavor-stats-row {
  display: flex;
  justify-content: space-between;
  padding: 12px 0;
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  margin-bottom: 20px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
}

.flavor-stat-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.stat-key {
  color: var(--text-muted);
}

.stat-val {
  color: var(--text-white);
  font-weight: 700;
}

.flavor-card-footer {
  margin-top: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.flavor-price {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--text-white);
}

.flavor-price-unit {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-family: var(--font-body);
}

/* ==========================================================================
   CUSTOM 12-PACK BUNDLE BUILDER
   ========================================================================== */
.bundle-builder-container {
  background: var(--bg-card);
  backdrop-filter: blur(14px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 48px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 48px;
  align-items: center;
}

.bundle-left-title {
  font-size: 2rem;
  margin-bottom: 12px;
}

.bundle-progress-header {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  margin-bottom: 10px;
}

.bundle-progress-bar-bg {
  width: 100%;
  height: 10px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin-bottom: 32px;
}

.bundle-progress-bar-fill {
  height: 100%;
  width: 0%;
  background: var(--theme-gradient);
  border-radius: var(--radius-full);
  transition: width 0.3s ease;
  box-shadow: 0 0 10px var(--theme-glow);
}

.bundle-items-selector {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.bundle-flavor-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.bundle-flavor-row:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: var(--border-hover);
}

.bundle-row-info {
  display: flex;
  align-items: center;
  gap: 14px;
}

.bundle-thumb {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
  object-fit: cover;
}

.bundle-row-name {
  font-weight: 700;
  font-size: 0.95rem;
}

.bundle-row-sub {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.bundle-counter {
  display: flex;
  align-items: center;
  gap: 12px;
}

.counter-btn {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--border-subtle);
  color: var(--text-white);
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.counter-btn:hover:not(:disabled) {
  background: var(--theme-primary);
  color: #000;
  border-color: var(--theme-primary);
  box-shadow: 0 0 10px var(--theme-glow);
}

.counter-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.counter-num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.1rem;
  width: 20px;
  text-align: center;
}

/* Bundle summary box */
.bundle-summary-box {
  background: rgba(11, 14, 20, 0.9);
  border: 1px solid var(--border-hover);
  border-radius: var(--radius-md);
  padding: 32px;
  display: flex;
  flex-direction: column;
}

.summary-title {
  font-size: 1.3rem;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 12px;
}

.summary-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 24px;
  font-size: 0.9rem;
}

.summary-line {
  display: flex;
  justify-content: space-between;
  color: var(--text-secondary);
}

.summary-total-line {
  display: flex;
  justify-content: space-between;
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--text-white);
  border-top: 1px solid var(--border-subtle);
  padding-top: 14px;
  margin-top: 8px;
}

.summary-per-can {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--theme-primary);
  margin-top: 4px;
}

/* ==========================================================================
   PERFORMANCE & LIFESTYLE SHOWCASE
   ========================================================================== */
.performance-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: center;
}

.perf-img-container {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.6);
  border: 1px solid var(--border-subtle);
}

.perf-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform var(--transition-smooth);
}

.perf-img-container:hover .perf-img {
  transform: scale(1.03);
}

.perf-overlay-badge {
  position: absolute;
  bottom: 24px;
  left: 24px;
  background: rgba(11, 14, 20, 0.85);
  backdrop-filter: blur(12px);
  padding: 12px 20px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-hover);
  display: flex;
  align-items: center;
  gap: 12px;
}

.stats-counter-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-top: 36px;
}

.stat-box {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 24px 20px;
  transition: all var(--transition-fast);
}

.stat-box:hover {
  border-color: var(--theme-primary);
  box-shadow: 0 0 20px var(--theme-glow-soft);
  transform: translateY(-4px);
}

.stat-number {
  font-family: var(--font-display);
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--theme-primary);
  line-height: 1;
  margin-bottom: 8px;
}

.stat-label {
  font-size: 0.88rem;
  color: var(--text-secondary);
}

/* ==========================================================================
   REVIEWS & SOCIAL PROOF
   ========================================================================== */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}

.review-card {
  background: var(--bg-card);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 28px;
  transition: all var(--transition-fast);
}

.review-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: 0 16px 32px rgba(0, 0, 0, 0.4);
}

.review-stars {
  color: #FFB800;
  margin-bottom: 14px;
  display: flex;
  gap: 4px;
}

.review-text {
  font-size: 0.95rem;
  color: var(--text-primary);
  line-height: 1.6;
  margin-bottom: 20px;
  font-style: italic;
}

.review-author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.author-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--theme-badge-bg);
  border: 1px solid var(--theme-badge-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: var(--theme-primary);
  font-family: var(--font-mono);
}

.author-name {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--text-white);
}

.author-role {
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* ==========================================================================
   FAQ ACCORDION
   ========================================================================== */
.faq-accordion {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: var(--bg-card);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all var(--transition-fast);
}

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

.faq-question {
  width: 100%;
  background: none;
  border: none;
  padding: 22px 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  text-align: left;
  font-family: var(--font-body);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-white);
}

.faq-icon {
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.3s ease;
  color: var(--theme-primary);
}

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

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.16, 1, 0.3, 1), padding 0.3s ease;
  padding: 0 28px;
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
}

.faq-item.active .faq-answer {
  max-height: 200px;
  padding: 0 28px 24px 28px;
}

/* ==========================================================================
   NEWSLETTER DROP BANNER
   ========================================================================== */
.newsletter-banner {
  background: radial-gradient(circle at 50% 50%, rgba(20, 26, 40, 0.9) 0%, var(--bg-dark) 100%);
  border: 1px solid var(--border-hover);
  border-radius: var(--radius-lg);
  padding: 60px 40px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.newsletter-banner::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--theme-gradient);
}

.newsletter-form {
  display: flex;
  max-width: 500px;
  margin: 32px auto 0 auto;
  gap: 12px;
}

.newsletter-input {
  flex: 1;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  padding: 14px 24px;
  color: var(--text-white);
  font-family: var(--font-body);
  font-size: 0.95rem;
  outline: none;
  transition: all var(--transition-fast);
}

.newsletter-input:focus {
  border-color: var(--theme-primary);
  box-shadow: 0 0 16px var(--theme-glow-soft);
}

/* ==========================================================================
   CART SLIDEOUT DRAWER
   ========================================================================== */
.cart-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
  z-index: 200;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-smooth);
}

.cart-overlay.open {
  opacity: 1;
  visibility: visible;
}

.cart-drawer {
  position: fixed;
  top: 0;
  right: 0;
  width: 100%;
  max-width: 440px;
  height: 100vh;
  background: #0B0E15;
  border-left: 1px solid var(--border-hover);
  z-index: 201;
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform var(--transition-smooth);
  box-shadow: -15px 0 40px rgba(0, 0, 0, 0.8);
}

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

.cart-header {
  padding: 24px 28px;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.cart-title {
  font-size: 1.3rem;
  display: flex;
  align-items: center;
  gap: 10px;
}

.close-cart-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 1.6rem;
  cursor: pointer;
  transition: color var(--transition-fast);
}

.close-cart-btn:hover {
  color: var(--text-white);
}

.cart-body {
  flex: 1;
  overflow-y: auto;
  padding: 24px 28px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.cart-empty-message {
  text-align: center;
  margin: auto;
  color: var(--text-muted);
}

.cart-item-card {
  display: flex;
  align-items: center;
  gap: 16px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 12px 16px;
}

.cart-item-img {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-sm);
  object-fit: cover;
}

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

.cart-item-name {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-white);
}

.cart-item-price {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--theme-primary);
}

.cart-item-qty-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 6px;
}

.cart-qty-btn {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  border: none;
  color: var(--text-white);
  cursor: pointer;
}

.cart-qty-val {
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

.cart-remove-item {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px;
  font-size: 1rem;
}

.cart-remove-item:hover {
  color: var(--danger);
}

.cart-footer {
  padding: 24px 28px;
  border-top: 1px solid var(--border-subtle);
  background: rgba(6, 8, 11, 0.95);
}

.cart-subtotal-row {
  display: flex;
  justify-content: space-between;
  margin-bottom: 8px;
  font-size: 0.95rem;
  color: var(--text-secondary);
}

.cart-total-row {
  display: flex;
  justify-content: space-between;
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--text-white);
  margin-bottom: 20px;
}

/* Toast Notification */
.toast-notice {
  position: fixed;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: #0B0E14;
  border: 1px solid var(--theme-primary);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.8), 0 0 20px var(--theme-glow);
  padding: 14px 24px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  gap: 12px;
  z-index: 300;
  opacity: 0;
  pointer-events: none;
  transition: all var(--transition-smooth);
}

.toast-notice.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.footer {
  background: #030507;
  border-top: 1px solid var(--border-subtle);
  padding: 80px 0 30px 0;
  position: relative;
  z-index: 2;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.4fr repeat(3, 1fr);
  gap: 40px;
  margin-bottom: 60px;
}

.footer-brand-desc {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-top: 16px;
  max-width: 320px;
  line-height: 1.7;
}

.footer-col-title {
  font-family: var(--font-display);
  font-size: 1rem;
  color: var(--text-white);
  margin-bottom: 20px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer-links-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-links-list a {
  text-decoration: none;
  color: var(--text-secondary);
  font-size: 0.9rem;
  transition: color var(--transition-fast);
}

.footer-links-list a:hover {
  color: var(--theme-primary);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.04);
  font-size: 0.85rem;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 16px;
}

/* ==========================================================================
   RESPONSIVE MEDIA QUERIES
   ========================================================================== */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .hero-content {
    display: flex;
    flex-direction: column;
    align-items: center;
  }
  .flavor-selector-box {
    width: 100%;
  }
  .hero-cta-group {
    justify-content: center;
  }
  .hero-guarantee {
    justify-content: center;
  }
  .flavors-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .bundle-builder-container {
    grid-template-columns: 1fr;
  }
  .performance-split {
    grid-template-columns: 1fr;
  }
  .footer-top {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  .mobile-nav-toggle {
    display: block;
  }
  .flavors-grid {
    grid-template-columns: 1fr;
  }
  .hero-visual-stage {
    min-height: 440px;
  }
  .can-3d-wrapper {
    max-width: 290px;
  }
  .spec-badge-top-left, .spec-badge-bottom-right {
    position: static;
    margin: 8px auto;
  }
  .hero-stage-badges-mobile {
    display: flex;
    gap: 12px;
    margin-top: 16px;
    justify-content: center;
  }
  .footer-top {
    grid-template-columns: 1fr;
  }
}