/* ==========================================================================
   TEMPO NEST STUDIO — SUSTAINABLE PACKAGING & MATERIALS INTELLIGENCE
   Design System: Contemporary Sustainable Materials Editorial
   ========================================================================== */

:root {
  --color-forest-ink: #17352D;
  --color-deep-moss: #294C40;
  --color-recycled-sage: #718776;
  --color-botanical: #4F765E;
  --color-natural-kraft: #C9B18A;
  --color-kraft-light: #DFD2BC;
  --color-recycled-paper: #E7DFCF;
  --color-warm-parchment: #F4EFE4;
  --color-mineral-stone: #B8B7AD;
  --color-charcoal: #252A27;
  --color-pure-white: #FBFAF6;
  --color-border: rgba(37, 42, 39, 0.12);
  --color-border-dark: rgba(23, 53, 45, 0.25);
  --color-accent-amber: #B97C47;
  
  --font-serif: "Playfair Display", Georgia, "Times New Roman", serif;
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: "JetBrains Mono", Consolas, "Courier New", monospace;
  
  --shadow-subtle: 0 2px 8px rgba(23, 53, 45, 0.05);
  --shadow-card: 0 6px 20px rgba(23, 53, 45, 0.08);
  --shadow-lift: 0 14px 32px rgba(23, 53, 45, 0.12);
  
  --radius-sm: 2px;
  --radius-md: 4px;
  --radius-lg: 6px;
  
  --transition-fast: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-smooth: 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  background-color: var(--color-warm-parchment);
  color: var(--color-charcoal);
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.65;
  font-weight: 400;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* --- TYPOGRAPHY --- */
h1, h2, h3, h4, .serif-heading {
  font-family: var(--font-serif);
  color: var(--color-forest-ink);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.015em;
}

h1 { font-size: clamp(2.4rem, 5vw, 4rem); }
h2 { font-size: clamp(1.8rem, 3.5vw, 2.6rem); }
h3 { font-size: clamp(1.3rem, 2.2vw, 1.8rem); }
h4 { font-size: 1.15rem; }

p {
  margin-bottom: 1.25rem;
}
p:last-child {
  margin-bottom: 0;
}

a {
  color: var(--color-forest-ink);
  text-decoration: none;
  transition: color var(--transition-fast);
}
a:hover {
  color: var(--color-botanical);
}
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--color-botanical);
  outline-offset: 3px;
}

.mono-tag {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-recycled-sage);
}

.container {
  width: 100%;
  max-width: 1320px;
  margin-left: auto;
  margin-right: auto;
  padding-left: clamp(1.25rem, 3vw, 2.5rem);
  padding-right: clamp(1.25rem, 3vw, 2.5rem);
}

/* --- HEADER (NON-STICKY) --- */
.site-header {
  height: 64px;
  background-color: var(--color-pure-white);
  border-bottom: 1px solid var(--color-border);
  position: static;
  width: 100%;
  z-index: 50;
}
.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-forest-ink);
  letter-spacing: -0.01em;
}
.brand-icon {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}
.nav-link {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--color-charcoal);
  padding: 0.4rem 0;
  position: relative;
}
.nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1.5px;
  background-color: var(--color-botanical);
  transition: width var(--transition-fast);
}
.nav-link:hover::after, .nav-link.active::after {
  width: 100%;
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}
.btn-header-cta {
  display: inline-flex;
  align-items: center;
  padding: 0.55rem 1.2rem;
  background-color: var(--color-forest-ink);
  color: var(--color-pure-white);
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  font-weight: 500;
  border: 1px solid var(--color-forest-ink);
  transition: background-color var(--transition-fast), transform var(--transition-fast);
}
.btn-header-cta:hover {
  background-color: var(--color-deep-moss);
  color: var(--color-pure-white);
}

.hamburger-btn {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  color: var(--color-forest-ink);
}

/* Mobile Nav Drawer */
.mobile-nav-drawer {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background-color: var(--color-pure-white);
  z-index: 100;
  padding: 2rem 1.5rem;
  flex-direction: column;
  overflow-y: auto;
}
.mobile-nav-drawer.open {
  display: flex;
}
.mobile-drawer-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--color-border);
}
.mobile-nav-links {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  margin-bottom: 2.5rem;
}
.mobile-nav-links a {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  color: var(--color-forest-ink);
}

/* --- BUTTONS --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.75rem;
  font-size: 0.95rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
  border: 1px solid transparent;
  text-decoration: none;
}
.btn-primary {
  background-color: var(--color-forest-ink);
  color: var(--color-pure-white);
  border-color: var(--color-forest-ink);
}
.btn-primary:hover {
  background-color: var(--color-deep-moss);
  color: var(--color-pure-white);
  transform: translateY(-1px);
}
.btn-secondary {
  background-color: transparent;
  color: var(--color-forest-ink);
  border-color: var(--color-forest-ink);
}
.btn-secondary:hover {
  background-color: var(--color-recycled-paper);
}
.btn-kraft {
  background-color: var(--color-natural-kraft);
  color: var(--color-forest-ink);
  font-weight: 600;
}
.btn-kraft:hover {
  background-color: #ba9f72;
}

/* --- HERO SECTION WITH 3D LAB --- */
.hero-section {
  background-color: var(--color-warm-parchment);
  border-bottom: 1px solid var(--color-border);
  padding: clamp(3rem, 6vw, 6rem) 0 2rem;
  position: relative;
  overflow: hidden;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: clamp(2rem, 4vw, 4rem);
  align-items: center;
}
.hero-copy {
  max-width: 620px;
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.85rem;
  background-color: rgba(79, 118, 94, 0.12);
  border: 1px solid rgba(79, 118, 94, 0.25);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-deep-moss);
  margin-bottom: 1.5rem;
}
.hero-title {
  margin-bottom: 1.25rem;
}
.hero-description {
  font-size: 1.15rem;
  color: #3f4742;
  margin-bottom: 2rem;
  line-height: 1.7;
}
.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2.5rem;
}

/* 3D Lab Container */
.lab-container {
  width: 100%;
  height: 480px;
  background-color: var(--color-pure-white);
  border: 1px solid var(--color-border-dark);
  border-radius: var(--radius-md);
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-card);
}
#webgl-canvas {
  width: 100%;
  height: 100%;
  display: block;
}
.lab-overlay-info {
  position: absolute;
  top: 1rem;
  left: 1rem;
  background: rgba(251, 250, 246, 0.92);
  backdrop-filter: blur(4px);
  padding: 0.6rem 0.9rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-forest-ink);
  pointer-events: none;
}
.lab-controls-hint {
  position: absolute;
  bottom: 1rem;
  right: 1rem;
  background: rgba(23, 53, 45, 0.85);
  color: var(--color-warm-parchment);
  padding: 0.4rem 0.8rem;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-family: var(--font-mono);
  pointer-events: none;
}
.lab-interactive-bar {
  position: absolute;
  bottom: 1rem;
  left: 1rem;
  display: flex;
  gap: 0.4rem;
  z-index: 5;
}
.lab-btn {
  background: var(--color-pure-white);
  border: 1px solid var(--color-border);
  padding: 0.35rem 0.7rem;
  font-size: 0.75rem;
  font-family: var(--font-mono);
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}
.lab-btn:hover, .lab-btn.active {
  background: var(--color-forest-ink);
  color: var(--color-pure-white);
}

/* Material Lab 2D Fallback for mobile */
.lab-fallback-view {
  display: none;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* --- MATERIAL DOSSIER CARDS (Card Architecture) --- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}
.dossier-card {
  background-color: var(--color-pure-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  display: flex;
  flex-direction: column;
  position: relative;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
  overflow: hidden;
}
.dossier-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lift);
  border-color: var(--color-recycled-sage);
}
.dossier-header-strip {
  background-color: var(--color-recycled-paper);
  border-bottom: 1px solid var(--color-border);
  padding: 0.5rem 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--color-deep-moss);
}
.dossier-image-wrapper {
  position: relative;
  width: 100%;
  height: 220px;
  background-color: #eae5d9;
  overflow: hidden;
}
.dossier-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-smooth);
}
.dossier-card:hover .dossier-img {
  transform: scale(1.03);
}
.dossier-badge {
  position: absolute;
  bottom: 0.75rem;
  left: 0.75rem;
  background-color: rgba(23, 53, 45, 0.9);
  color: var(--color-pure-white);
  padding: 0.25rem 0.6rem;
  font-size: 0.72rem;
  font-family: var(--font-mono);
  border-radius: 2px;
}
.dossier-body {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}
.dossier-category {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-botanical);
  margin-bottom: 0.35rem;
  text-transform: uppercase;
}
.dossier-title {
  font-size: 1.35rem;
  margin-bottom: 0.75rem;
  color: var(--color-forest-ink);
}
.dossier-summary {
  font-size: 0.92rem;
  color: #525a54;
  margin-bottom: 1.25rem;
  line-height: 1.55;
  flex-grow: 1;
}
.dossier-specs {
  border-top: 1px solid var(--color-border);
  padding-top: 0.85rem;
  margin-bottom: 1.25rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.6rem;
  font-size: 0.78rem;
}
.spec-item dt {
  color: var(--color-recycled-sage);
  font-family: var(--font-mono);
}
.spec-item dd {
  font-weight: 600;
  color: var(--color-charcoal);
}
.dossier-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  border-top: 1px solid var(--color-border);
  padding-top: 1rem;
}
.dossier-link {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-forest-ink);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}
.dossier-link:hover {
  color: var(--color-botanical);
}

/* --- SECTION PADDING & UTILITIES --- */
.section-py {
  padding: clamp(3.5rem, 7vw, 6rem) 0;
}
.section-bg-light {
  background-color: var(--color-pure-white);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}
.section-header {
  margin-bottom: clamp(2rem, 4vw, 3.5rem);
}
.section-header.centered {
  text-align: center;
  max-width: 760px;
  margin-left: auto;
  margin-right: auto;
}
.section-subtitle {
  font-size: 1.1rem;
  color: #555e58;
  margin-top: 0.75rem;
}

/* --- INTERACTIVE TOOLS CONTAINER --- */
.tool-surface {
  background: var(--color-pure-white);
  border: 1px solid var(--color-border-dark);
  border-radius: var(--radius-sm);
  padding: clamp(1.5rem, 3vw, 2.5rem);
  box-shadow: var(--shadow-card);
}
.tool-grid-2col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}
.form-group {
  margin-bottom: 1.25rem;
}
.form-label {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
  color: var(--color-forest-ink);
}
.form-helper {
  display: block;
  font-size: 0.75rem;
  color: #717d75;
  margin-top: 0.25rem;
}
.form-select, .form-input, .form-textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--color-border-dark);
  border-radius: var(--radius-sm);
  background-color: var(--color-warm-parchment);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  color: var(--color-charcoal);
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
}
.form-select:focus, .form-input:focus, .form-textarea:focus {
  background-color: var(--color-pure-white);
  border-color: var(--color-botanical);
}
.result-box {
  background-color: var(--color-warm-parchment);
  border: 1px solid var(--color-border);
  padding: 1.5rem;
  border-radius: var(--radius-sm);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.result-header {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  color: var(--color-forest-ink);
  margin-bottom: 0.75rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px dashed var(--color-border-dark);
}
.spec-output-list {
  list-style: none;
  font-size: 0.9rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  margin-bottom: 1.5rem;
}
.spec-output-list li {
  display: flex;
  justify-content: space-between;
  border-bottom: 1px solid rgba(37, 42, 39, 0.06);
  padding-bottom: 0.35rem;
}
.spec-output-list li span:first-child {
  color: var(--color-recycled-sage);
  font-family: var(--font-mono);
  font-size: 0.8rem;
}
.spec-output-list li span:last-child {
  font-weight: 600;
  text-align: right;
}

/* Disclaimer Note */
.disclaimer-note {
  font-size: 0.78rem;
  color: #79837d;
  font-style: italic;
  margin-top: 0.75rem;
  line-height: 1.4;
}

/* Material Comparison Matrix Table */
.table-responsive {
  width: 100%;
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-pure-white);
}
.comparison-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.9rem;
}
.comparison-table th, .comparison-table td {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--color-border);
}
.comparison-table th {
  background-color: var(--color-recycled-paper);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  text-transform: uppercase;
  color: var(--color-forest-ink);
  letter-spacing: 0.05em;
}
.comparison-table tr:hover td {
  background-color: rgba(244, 239, 228, 0.5);
}

/* Checklist Styling */
.checklist-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1.2rem;
  background: var(--color-pure-white);
  border: 1px solid var(--color-border);
  margin-bottom: 0.75rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}
.checklist-item:hover {
  border-color: var(--color-botanical);
}
.checklist-checkbox {
  width: 20px;
  height: 20px;
  accent-color: var(--color-botanical);
  cursor: pointer;
  margin-top: 0.2rem;
}
.checklist-item.checked {
  background-color: #f1f6f2;
  border-color: var(--color-botanical);
}
.checklist-content h4 {
  margin-bottom: 0.25rem;
  font-size: 1.05rem;
}
.checklist-content p {
  font-size: 0.88rem;
  color: #555e58;
}

/* Filter controls */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 2rem;
  align-items: center;
}
.filter-chip {
  padding: 0.5rem 1rem;
  border: 1px solid var(--color-border-dark);
  background: var(--color-pure-white);
  border-radius: 40px;
  font-size: 0.82rem;
  font-family: var(--font-mono);
  cursor: pointer;
  color: var(--color-charcoal);
  transition: all var(--transition-fast);
}
.filter-chip:hover, .filter-chip.active {
  background: var(--color-forest-ink);
  color: var(--color-pure-white);
  border-color: var(--color-forest-ink);
}
.search-input-wrap {
  position: relative;
  flex-grow: 1;
  min-width: 240px;
}
.search-input-wrap input {
  width: 100%;
  padding: 0.55rem 1rem 0.55rem 2.25rem;
  border: 1px solid var(--color-border-dark);
  border-radius: 40px;
  font-size: 0.88rem;
  background: var(--color-pure-white);
}
.search-icon {
  position: absolute;
  left: 0.85rem;
  top: 50%;
  transform: translateY(-50%);
  width: 16px;
  height: 16px;
  color: var(--color-recycled-sage);
}

/* --- FOOTER --- */
.site-footer {
  background-color: var(--color-forest-ink);
  color: var(--color-recycled-paper);
  padding: 5rem 0 2rem;
  border-top: 1px solid #0f241e;
}
.footer-top-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1.2fr;
  gap: 2.5rem;
  margin-bottom: 4rem;
}
.footer-brand h3 {
  color: var(--color-pure-white);
  margin-bottom: 1rem;
}
.footer-bio {
  font-size: 0.9rem;
  color: var(--color-mineral-stone);
  line-height: 1.6;
  max-width: 320px;
  margin-bottom: 1.5rem;
}
.footer-nav-col h4 {
  color: var(--color-natural-kraft);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  margin-bottom: 1.25rem;
  text-transform: uppercase;
}
.footer-nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}
.footer-nav-list a {
  color: var(--color-recycled-paper);
  font-size: 0.88rem;
}
.footer-nav-list a:hover {
  color: var(--color-natural-kraft);
}
.footer-bottom {
  border-top: 1px solid rgba(231, 223, 207, 0.15);
  padding-top: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  font-size: 0.82rem;
  color: var(--color-mineral-stone);
}
.footer-legal-links {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
}
.footer-legal-links a {
  color: var(--color-mineral-stone);
}
.footer-legal-links a:hover {
  color: var(--color-pure-white);
}

/* --- COOKIE CONSENT BANNER --- */
.cookie-banner {
  position: fixed;
  bottom: 1.5rem;
  left: 1.5rem;
  right: 1.5rem;
  max-width: 580px;
  background-color: var(--color-forest-ink);
  color: var(--color-pure-white);
  padding: 1.5rem;
  border-radius: var(--radius-sm);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
  border: 1px solid var(--color-deep-moss);
  z-index: 999;
  display: none;
}
.cookie-banner.visible {
  display: block;
}
.cookie-banner p {
  font-size: 0.85rem;
  line-height: 1.5;
  margin-bottom: 1rem;
  color: var(--color-recycled-paper);
}
.cookie-banner a {
  color: var(--color-natural-kraft);
  text-decoration: underline;
}
.cookie-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}
.btn-cookie {
  padding: 0.45rem 0.9rem;
  font-size: 0.8rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  cursor: pointer;
  border: none;
}
.btn-cookie-accept {
  background-color: var(--color-natural-kraft);
  color: var(--color-forest-ink);
}
.btn-cookie-reject {
  background-color: transparent;
  border: 1px solid var(--color-mineral-stone);
  color: var(--color-pure-white);
}
.btn-cookie-prefs {
  background: none;
  border: none;
  color: var(--color-mineral-stone);
  text-decoration: underline;
  cursor: pointer;
}

/* --- RESPONSIVE ADJUSTMENTS --- */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }
  .lab-container {
    height: 400px;
  }
  .footer-top-grid {
    grid-template-columns: 1fr 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .site-header {
    height: 52px;
  }
  .main-nav, .header-actions .btn-header-cta {
    display: none;
  }
  .hamburger-btn {
    display: block;
  }
  .tool-grid-2col {
    grid-template-columns: 1fr;
  }
  .footer-top-grid {
    grid-template-columns: 1fr 1fr;
  }
  .card-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .footer-top-grid {
    grid-template-columns: 1fr;
  }
  .cookie-banner {
    left: 0.75rem;
    right: 0.75rem;
    bottom: 0.75rem;
  }
}