/* Design System Variables */
:root {
   --color-black: #181a17;
   --color-dark-charcoal: #212520;
   --color-cream: #f6f3ea;
   --color-white: #ffffff;
   --color-sage: #98a892;
   --color-sage-dark: #798b72;
   --color-orange: #CF5C36;
   --color-orange-hover: #b34a26;
   --color-gray-100: #f6f3ea;
   --color-gray-200: #e2ded3;
   --color-gray-700: #474f44;

   --font-heading: 'Plus Jakarta Sans', sans-serif;
   --font-serif: 'Spectral', serif;
   --font-mono: 'Space Mono', monospace;

   --transition-smooth: all 0.5s cubic-bezier(0.16, 1, 0.3, 1);
   --transition-fast: all 0.2s ease;

   --container-width: 1200px;
   --header-height: 80px;
}

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

html {
   scroll-behavior: smooth;
   font-size: 16px;
   background-color: var(--color-black);
   color: var(--color-gray-100);
   -webkit-font-smoothing: antialiased;
}

body {
   font-family: var(--font-heading);
   line-height: 1.6;
   overflow-x: hidden;
}

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

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

/* Utility Layouts */
.container {
   width: 100%;
   max-width: var(--container-width);
   margin: 0 auto;
   padding: 0 2rem;
}

.section-padding {
   padding: 8rem 0;
}

@media (max-width: 768px) {
   .section-padding {
      padding: 5rem 0;
   }
}

/* Sections Styles & Color Alternations */
section {
   position: relative;
   overflow: hidden;
}

/* Navigation Header */
.main-header {
   position: fixed;
   top: 0;
   left: 0;
   width: 100%;
   height: var(--header-height);
   z-index: 1000;
   transition: var(--transition-smooth);
   background-color: transparent;
   border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.main-header.scrolled {
   background-color: rgba(5, 5, 5, 0.85);
   backdrop-filter: blur(15px);
   -webkit-backdrop-filter: blur(15px);
   height: 70px;
   border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.main-header.light-nav {
   border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.main-header.scrolled.light-nav {
   background-color: rgba(251, 250, 247, 0.9);
   border-bottom: 1px solid rgba(0, 0, 0, 0.08);
}

.header-container {
   max-width: var(--container-width);
   height: 100%;
   margin: 0 auto;
   padding: 0 2rem;
   display: flex;
   align-items: center;
   justify-content: space-between;
}

.logo-link {
   display: flex;
   align-items: center;
}

.logo {
   height: 32px;
   width: auto;
   object-fit: contain;
   transition: var(--transition-smooth);
}

/* In light navigation theme, invert the white logo to make it dark */
.main-header.light-nav .logo {
   filter: invert(1) brightness(0.1);
}

.nav-menu {
   display: flex;
   align-items: center;
   gap: 3rem;
}

.nav-item {
   font-size: 0.9rem;
   font-weight: 500;
   letter-spacing: 0.05em;
   text-transform: uppercase;
   color: rgba(255, 255, 255, 0.7);
   padding: 0.5rem 0;
   position: relative;
}

.nav-item::after {
   content: '';
   position: absolute;
   bottom: 0;
   left: 0;
   width: 0;
   height: 1px;
   background-color: var(--color-sage);
   transition: var(--transition-fast);
}

.nav-item:hover {
   color: var(--color-white);
}

.nav-item:hover::after {
   width: 100%;
}

/* Light Theme Navigation Item Colors */
.light-nav .nav-item {
   color: rgba(26, 28, 24, 0.7);
}

.light-nav .nav-item:hover {
   color: var(--color-dark-charcoal);
}

.nav-cta {
   background-color: var(--color-sage);
   color: var(--color-black) !important;
   padding: 0.75rem 1.5rem;
   border-radius: 4px;
   font-size: 0.85rem;
   font-weight: 600;
   text-transform: uppercase;
   letter-spacing: 0.05em;
   box-shadow: 0 4px 12px rgba(173, 188, 167, 0.15);
}

.nav-cta:hover {
   background-color: var(--color-sage-dark);
   transform: translateY(-2px);
   box-shadow: 0 6px 18px rgba(173, 188, 167, 0.25);
}

/* Mobile Toggle */
.menu-toggle {
   display: none;
   flex-direction: column;
   justify-content: space-between;
   width: 24px;
   height: 16px;
   background: transparent;
   border: none;
   cursor: pointer;
}

.menu-toggle .bar {
   width: 100%;
   height: 2px;
   background-color: var(--color-white);
   transition: var(--transition-fast);
}

.light-nav .menu-toggle .bar {
   background-color: var(--color-dark-charcoal);
}

@media (max-width: 768px) {
   .menu-toggle {
      display: flex;
   }

   .nav-menu {
      position: fixed;
      top: 0;
      right: -100%;
      width: 80%;
      height: 100vh;
      background-color: var(--color-dark-charcoal);
      flex-direction: column;
      justify-content: center;
      gap: 2.5rem;
      transition: var(--transition-smooth);
      box-shadow: -10px 0 30px rgba(0, 0, 0, 0.5);
   }

   .light-nav .nav-menu {
      background-color: var(--color-cream);
   }

   .nav-menu.active {
      right: 0;
   }

   .nav-item {
      font-size: 1.2rem;
   }
}

/* Section Common Titles & Headers */
.section-header {
   max-width: 700px;
}

.section-label {
   font-family: var(--font-mono);
   font-size: 0.8rem;
   letter-spacing: 0.15em;
   color: var(--color-sage);
   display: block;
   margin-bottom: 1rem;
}

.section-label.dark-text {
   color: var(--color-sage-dark);
}

.section-title {
   font-family: var(--font-serif);
   font-size: 3.5rem;
   font-weight: 400;
   line-height: 1.15;
   margin-bottom: 0;
   letter-spacing: -0.02em;
   color: var(--color-white);
}

.dark-text {
   color: var(--color-dark-charcoal) !important;
}

.section-lead {
   font-size: 1.25rem;
   font-weight: 300;
   line-height: 1.6;
   color: var(--color-gray-200);
}

@media (max-width: 768px) {
   .section-title {
      font-size: 2.5rem;
   }

   .section-lead {
      font-size: 1.1rem;
   }
}

/* 1. Hero Section */
.hero-section {
   height: 100vh;
   min-height: 650px;
   display: flex;
   align-items: center;
   color: var(--color-white);
   background-color: var(--color-black);
   position: relative;
   background-image:
      linear-gradient(180deg, rgba(5, 5, 5, 0.6) 0%, rgba(5, 5, 5, 0.9) 100%),
      url('images/bg_micrograph.jpg');
   background-size: cover;
   background-position: center;
   background-repeat: no-repeat;
}

.hero-bg-overlay {
   position: absolute;
   top: 0;
   left: 0;
   width: 100%;
   height: 100%;
   background: linear-gradient(180deg, rgba(5, 5, 5, 0.4) 0%, rgba(5, 5, 5, 0.9) 100%);
   pointer-events: none;
}

.hero-content {
   position: relative;
   z-index: 10;
   max-width: 800px;
}

.tagline-badge {
   font-family: var(--font-mono);
   font-size: 0.8rem;
   letter-spacing: 0.2em;
   color: var(--color-sage);
   border: 1px solid rgba(173, 188, 167, 0.3);
   padding: 0.4rem 1rem;
   border-radius: 50px;
   display: inline-block;
   margin-bottom: 2rem;
   background-color: rgba(173, 188, 167, 0.05);
}

.hero-title {
   font-size: 5rem;
   font-weight: 700;
   line-height: 1.05;
   letter-spacing: -0.03em;
   margin-bottom: 2rem;
}

.hero-title .text-highlight {
   font-family: var(--font-serif);
   font-style: italic;
   font-weight: 400;
   color: var(--color-orange);
}

.hero-subtitle {
   font-size: 1.35rem;
   font-weight: 300;
   line-height: 1.6;
   color: var(--color-gray-200);
   margin-bottom: 3rem;
   max-width: 650px;
}

.hero-actions {
   display: flex;
   gap: 1.5rem;
}

.btn {
   display: inline-block;
   padding: 1rem 2rem;
   border-radius: 4px;
   font-size: 0.9rem;
   font-weight: 600;
   text-transform: uppercase;
   letter-spacing: 0.08em;
   transition: var(--transition-smooth);
   cursor: pointer;
}

.btn-primary {
   background-color: var(--color-orange);
   color: var(--color-black);
}

.btn-primary:hover {
   background-color: var(--color-orange-hover);
   transform: translateY(-3px);
   box-shadow: 0 10px 20px rgba(173, 188, 167, 0.2);
}

.btn-secondary {
   background-color: transparent;
   color: var(--color-white);
   border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-secondary:hover {
   background-color: rgba(255, 255, 255, 0.05);
   border-color: var(--color-white);
   transform: translateY(-3px);
}

.hero-scroll-indicator {
   position: absolute;
   bottom: 2rem;
   left: 50%;
   transform: translateX(-50%);
   display: flex;
   flex-direction: column;
   align-items: center;
   gap: 0.5rem;
   font-family: var(--font-mono);
   font-size: 0.75rem;
   letter-spacing: 0.1em;
   opacity: 0.6;
   animation: bounce 2s infinite;
}

@keyframes bounce {

   0%,
   20%,
   50%,
   80%,
   100% {
      transform: translate(-50%, 0);
   }

   40% {
      transform: translate(-50%, -10px);
   }

   60% {
      transform: translate(-50%, -5px);
   }
}

@media (max-width: 768px) {
   .hero-title {
      font-size: 3.2rem;
   }

   .hero-subtitle {
      font-size: 1.1rem;
   }

   .hero-actions {
      flex-direction: column;
      gap: 1rem;
   }
}

/* 2. The Science Section */
.science-section {
   background-color: var(--color-dark-charcoal);
   border-top: 1px solid rgba(255, 255, 255, 0.03);
}

.science-section .bullets {
   display: grid;
   grid-template-columns: repeat(3, 1fr);
   gap: 3rem;
   margin-top: 3.5rem;
}

.science-visual {
   margin-top: 2rem;
   text-align: center;
}

.science-samples-img {
   width: 100%;
   height: auto;
   border-radius: 8px;
   border: 1px solid rgba(255, 255, 255, 0.08);
   box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
   margin-bottom: 0 auto 2rem;
}

@media (max-width: 992px) {
   .science-section .bullets {
      grid-template-columns: 1fr;
      gap: 2rem;
   }
}

/* 3. Sustainability Section */
.sustainability-section {
   background-color: var(--color-cream);
   background-image:
      linear-gradient(rgba(251, 250, 247, 0.88), rgba(251, 250, 247, 0.88)),
      url('images/bg_woodgrain.jpg');
   background-size: cover;
   background-position: center;
   background-repeat: no-repeat;
   color: var(--color-dark-charcoal);
}

.sustainability-wrapper {
   max-width: 800px;
   margin: 0 auto;
}

.sustain-metrics {
   display: grid;
   grid-template-columns: repeat(3, 1fr);
   gap: 2rem;
   margin: 3rem 0;
   border-top: 1px solid var(--color-gray-200);
   border-bottom: 1px solid var(--color-gray-200);
   padding: 2rem 0;
}

.metric-item {
   text-align: left;
}

.metric-number {
   display: block;
   font-family: var(--font-serif);
   font-size: 3rem;
   line-height: 1;
   font-weight: 400;
   color: var(--color-sage-dark);
   margin-bottom: 0.5rem;
}

.metric-label {
   font-family: var(--font-mono);
   font-size: 0.75rem;
   letter-spacing: 0.05em;
   color: var(--color-gray-700);
   text-transform: uppercase;
}

.bullets {
   display: flex;
   flex-direction: column;
   gap: 2rem;
   margin-top: 2rem;
}

.bullet-point {
   display: flex;
   gap: 1.5rem;
}

.bullet-icon {
   font-size: 1.5rem;
   color: var(--color-sage-dark);
   margin-top: 0.25rem;
}

.bullet-point h4 {
   font-size: 1.1rem;
   font-weight: 600;
   margin-bottom: 0.25rem;
}

.bullet-point p {
   font-size: 0.95rem;
}

.sustainability-image-card {
   background-color: var(--color-white);
   padding: 1.5rem;
   border-radius: 8px;
   box-shadow: 0 15px 40px rgba(0, 0, 0, 0.04);
}

.sustain-img {
   border-radius: 4px;
   width: 100%;
   aspect-ratio: 4/3;
   object-fit: cover;
   margin-bottom: 1.5rem;
}

.image-caption {
   font-size: 1rem;
   color: var(--color-white);
   margin-bottom: 0.25rem;
}

@media (max-width: 992px) {
   .sustainability-wrapper {
      grid-template-columns: 1fr;
      gap: 3rem;
   }
}



/* 5. Press Section */
.press-section {
   background-color: var(--color-dark-charcoal);
   border-top: 1px solid rgba(255, 255, 255, 0.03);
}

.press-grid {
   display: grid;
   grid-template-columns: repeat(2, 1fr);
   gap: 2.5rem;
   margin-top: 2rem;
}

.press-card {
   background-color: rgba(255, 255, 255, 0.01);
   border: 1px solid rgba(255, 255, 255, 0.04);
   border-radius: 6px;
   padding: 2rem;
   display: flex;
   flex-direction: column;
   transition: var(--transition-smooth);
}

.press-card:hover {
   background-color: rgba(255, 255, 255, 0.03);
   border-color: rgba(173, 188, 167, 0.15);
   transform: translateY(-5px);
}

.press-source {
   font-family: var(--font-serif);
   font-size: 1.8rem;
   font-weight: 400;
   line-height: 1.3;
   margin-bottom: 0.5rem;
   color: var(--color-white);
}

.press-excerpt {
   color: var(--color-gray-200);
   font-size: 0.95rem;
   line-height: 1.6;
   margin-bottom: 1rem;
   flex-grow: 1;
}

.press-link {
   font-size: 0.9rem;
   font-weight: 600;
   color: var(--color-sage);
   display: inline-flex;
   align-items: center;
   gap: 0.5rem;
   transition: var(--transition-fast);
}

.press-link:hover {
   color: var(--color-white);
}

@media (max-width: 992px) {
   .press-grid {
      grid-template-columns: 1fr;
   }

   .press-card {
      padding: 2rem;
   }
}

/* 6. Inquiry Section */
.inquiry-section {
   background-color: var(--color-black);
   background-image:
      linear-gradient(180deg, rgba(5, 5, 5, 0.85) 0%, rgba(5, 5, 5, 0.95) 100%),
      url('images/bg_balsa.jpg');
   background-size: cover;
   background-position: center;
   background-repeat: no-repeat;
}

.inquiry-content {
   max-width: 650px;
   margin: 0 auto;
}

.inquiry-headline {
   font-family: var(--font-serif);
   font-size: 3.5rem;
   font-weight: 400;
   line-height: 1.2;
   margin-bottom: 1.5rem;
   color: var(--color-white);
}

.inquiry-text {
   font-size: 1.15rem;
   color: var(--color-gray-200);
   margin-bottom: 3.5rem;
}



.email-btn {
   display: inline-flex;
   align-items: center;
   justify-content: center;
   gap: 1rem;
   color: var(--color-black);
   padding: 1.25rem 2.5rem;
   border-radius: 4px;
   font-family: var(--font-mono);
   font-size: 1.3rem;
   font-weight: 700;
   width: 100%;
   max-width: 480px;
   transition: var(--transition-smooth);
   box-shadow: 0 10px 30px rgba(173, 188, 167, 0.15);
}

.email-btn:hover {
   background-color: var(--color-white);
   color: var(--color-black);
   transform: translateY(-3px);
   box-shadow: 0 15px 40px rgba(255, 255, 255, 0.15);
}



@media (max-width: 768px) {
   .inquiry-headline {
      font-size: 2.5rem;
   }

   .email-btn {
      font-size: 1.1rem;
      padding: 1rem 1.5rem;
   }
}



/* Animation Utilities (JavaScript Triggered) */
.reveal {
   opacity: 0;
   transform: translateY(30px);
   transition: opacity 0.8s ease, transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.active {
   opacity: 1;
   transform: translateY(0);
}