/* ==========================================================================
   Nuvient Industrial Dryer - Modern Minimal White Design System
   ========================================================================== */

:root {
  /* Crisp Minimal White & Slate Palette
     Base Backgrounds:
       --color-bg:               #ffffff (Clean pure white)
       --color-surface:          #ffffff (Elevated white card surface)
       --color-surface-elevated: #ffffff (White cards)
       --color-surface-hover:    #f8fafc (Subtle cool gray hover)

     Borders & Dividers:
       --color-border:           #e2e8f0 (Light clean border)
       --color-border-bright:    #cbd5e1 (Defined border)

     Typography:
       --color-text-primary:     #0f172a (Deep Slate 900)
       --color-text-secondary:   #475569 (Slate 600)
       --color-text-muted:       #94a3b8 (Slate 400)

     Accents & Signals:
       --color-accent:           #0f172a (Slate 900 / High-end minimal)
       --color-accent-hover:     #1e293b (Slate 800)
       --color-accent-soft:      #f1f5f9 (Slate 100 soft pill)
       --color-accent-glow:      rgba(15, 23, 42, 0.08)

       --color-cyan:             #0284c7 (Precision Sky Blue)
       --color-cyan-soft:        rgba(2, 132, 199, 0.08)
       --color-green:            #16a34a (Clean Green)
       --color-green-soft:       rgba(22, 163, 74, 0.08)
       --color-red:              #e11d48 (Clean Rose)
  */

  --color-bg: #ffffff;
  --color-surface: #ffffff;
  --color-surface-elevated: #ffffff;
  --color-surface-hover: #f8fafc;
  --color-border: #e2e8f0;
  --color-border-bright: #cbd5e1;

  --color-text-primary: #0f172a;
  --color-text-secondary: #475569;
  --color-text-muted: #94a3b8;

  --color-accent: #0f172a;
  --color-accent-hover: #1e293b;
  --color-accent-soft: #f1f5f9;
  --color-accent-glow: rgba(15, 23, 42, 0.08);

  --color-cyan: #0284c7;
  --color-cyan-soft: rgba(2, 132, 199, 0.08);
  --color-green: #16a34a;
  --color-green-soft: rgba(22, 163, 74, 0.08);
  --color-red: #e11d48;

  /* Typography */
  --font-sans: 'Plus Jakarta Sans', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  /* Spacing */
  --container-max: 1240px;
  --header-height: 72px;

  /* Shadows & Radius */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --shadow-card: 0 4px 20px -2px rgba(15, 23, 42, 0.06), 0 2px 6px -1px rgba(15, 23, 42, 0.04);
  --shadow-glow: 0 0 25px -4px rgba(15, 23, 42, 0.05);
  
  /* Transitions */
  --transition-fast: 180ms cubic-bezier(0.16, 1, 0.3, 1);
  --transition-normal: 280ms cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 1.5rem);
  color-scheme: light;
}

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

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

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

button, input, textarea, select {
  font: inherit;
}

/* Layout Utilities */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: 5.5rem 0;
  position: relative;
}

.section-alt {
  background-color: #f8fafc;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

/* Typography Presets */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-secondary);
  background: var(--color-accent-soft);
  padding: 0.35rem 0.85rem;
  border-radius: 9999px;
  border: 1px solid var(--color-border);
  margin-bottom: 1rem;
}

.eyebrow-cyan {
  color: #0284c7;
  background: rgba(2, 132, 199, 0.06);
  border-color: rgba(2, 132, 199, 0.2);
}

.section-title {
  font-size: clamp(2rem, 3.5vw, 2.75rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.025em;
  color: var(--color-text-primary);
  margin-bottom: 1rem;
}

.section-desc {
  font-size: 1.125rem;
  color: var(--color-text-secondary);
  max-width: 680px;
  line-height: 1.7;
}

.text-center {
  text-align: center;
}

.mx-auto {
  margin-left: auto;
  margin-right: auto;
}

/* Header & Sticky Nav */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  transition: all var(--transition-normal);
}

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

.brand-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 900;
  font-size: 1.4rem;
  letter-spacing: -0.02em;
  color: var(--color-text-primary);
}

.brand-badge {
  background: var(--color-text-primary);
  color: #ffffff;
  font-size: 0.7rem;
  font-weight: 800;
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

.nav-link {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  position: relative;
  padding: 0.5rem 0;
}

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

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

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

.nav-cta {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-weight: 700;
  font-size: 0.9375rem;
  padding: 0.75rem 1.4rem;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-text-primary);
  color: #ffffff;
  box-shadow: 0 2px 8px rgba(15, 23, 42, 0.12);
}

.btn-primary:hover {
  background: #334155;
  transform: translateY(-2px);
  box-shadow: 0 4px 14px rgba(15, 23, 42, 0.18);
}

.btn-secondary {
  background: #ffffff;
  color: var(--color-text-primary);
  border-color: var(--color-border);
}

.btn-secondary:hover {
  background: var(--color-surface-hover);
  border-color: var(--color-border-bright);
  transform: translateY(-2px);
}

.btn-whatsapp {
  background: #25d366;
  color: #ffffff;
}

.btn-whatsapp:hover {
  background: #1eb857;
  transform: translateY(-2px);
}

/* Hero Section */
.hero-section {
  padding: 4.5rem 0 5.5rem;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 3.5rem;
  align-items: center;
}

.hero-title {
  font-size: clamp(2.5rem, 4.2vw, 3.75rem);
  font-weight: 900;
  line-height: 1.12;
  letter-spacing: -0.03em;
  color: var(--color-text-primary);
  margin-bottom: 1.25rem;
}

.hero-title-highlight {
  color: #0284c7;
}

.hero-lead {
  font-size: 1.1875rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: 2rem;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 3rem;
}

/* Metrics Ribbon */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
  margin-top: 2rem;
}

.metric-card {
  background: #ffffff;
  border: 1px solid var(--color-border);
  padding: 1.25rem;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.04);
}

.metric-card:hover {
  border-color: var(--color-border-bright);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.06);
}

.metric-value {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--color-text-primary);
  line-height: 1.2;
}

.metric-label {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--color-text-primary);
  margin-top: 0.25rem;
}

.metric-detail {
  font-size: 0.75rem;
  color: var(--color-text-secondary);
  margin-top: 0.25rem;
  line-height: 1.4;
}

/* Hero Showcase Frame */
.hero-visual {
  position: relative;
}

.hero-image-wrapper {
  position: relative;
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 1.5rem;
  box-shadow: var(--shadow-card);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-image-wrapper img {
  max-height: 480px;
  width: auto;
  object-fit: contain;
  filter: drop-shadow(0 10px 20px rgba(15, 23, 42, 0.08));
  transition: transform var(--transition-normal);
}

.hero-image-wrapper:hover img {
  transform: scale(1.02);
}

/* Feature Comparison Cards: Low Temp vs Conventional */
.comparison-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
  margin-top: 3rem;
}

.card-comparison {
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  border: 1px solid var(--color-border);
  position: relative;
  background: #ffffff;
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.04);
}

.card-conventional {
  background: #ffffff;
  border-color: var(--color-border);
}

.card-nuvient {
  background: #ffffff;
  border-color: #cbd5e1;
  box-shadow: var(--shadow-card);
}

.comparison-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--color-border);
}

.comparison-title {
  font-size: 1.35rem;
  font-weight: 800;
}

.comparison-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.comparison-item {
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
}

.comparison-icon {
  font-size: 1.15rem;
  line-height: 1.4;
  font-weight: 800;
}

.comparison-text strong {
  display: block;
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: 0.15rem;
}

.comparison-text p {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

/* Technical Dimensions & Visual Callouts */
.specs-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
  align-items: stretch;
  margin-top: 3rem;
}

.dim-box {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  position: relative;
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  height: 100%;
}

.dim-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin: 1.5rem 0;
  text-align: center;
}

.dim-item {
  background: #f8fafc;
  border-radius: var(--radius-md);
  padding: 1rem 0.75rem;
  border: 1px solid var(--color-border);
}

.dim-val {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-text-primary);
}

.dim-lbl {
  font-size: 0.75rem;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-top: 0.25rem;
  font-weight: 600;
}

/* Specifications Table */
.table-responsive {
  width: 100%;
  overflow-x: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  background: #ffffff;
  margin-top: 2.5rem;
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.04);
}

.spec-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.spec-table th, .spec-table td {
  padding: 1.15rem 1.5rem;
  border-bottom: 1px solid var(--color-border);
}

.spec-table th {
  background: #f8fafc;
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-primary);
  font-weight: 800;
}

.spec-table tr:last-child td {
  border-bottom: none;
}

.spec-table tr:hover td {
  background: #f8fafc;
}

.spec-param {
  font-weight: 700;
  color: var(--color-text-primary);
  width: 28%;
}

.spec-val {
  font-weight: 700;
  color: var(--color-text-primary);
  width: 32%;
}

.spec-note {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

/* Produce Grid */
.produce-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 3rem;
}

.produce-card {
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  transition: all var(--transition-fast);
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.04);
}

.produce-card:hover {
  border-color: var(--color-border-bright);
  transform: translateY(-4px);
  background: #ffffff;
  box-shadow: var(--shadow-card);
}

.produce-title {
  font-size: 1.15rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
  color: var(--color-text-primary);
}

.produce-examples {
  font-size: 0.875rem;
  color: #0284c7;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.produce-benefit {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* Inquiry Form */
.inquiry-wrapper {
  margin: 3rem auto 0;
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 2.75rem;
  box-shadow: var(--shadow-card);
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--color-text-primary);
}

.form-control {
  width: 100%;
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 0.85rem 1.15rem;
  color: var(--color-text-primary);
  transition: border-color var(--transition-fast);
}

.form-control:focus {
  outline: none;
  border-color: var(--color-text-primary);
  box-shadow: 0 0 0 3px rgba(15, 23, 42, 0.08);
  background: #ffffff;
}

.form-control::placeholder {
  color: var(--color-text-muted);
}

.form-hint {
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  margin-top: 0.4rem;
}

.form-status {
  padding: 1rem;
  border-radius: var(--radius-md);
  margin-bottom: 1.5rem;
  display: none;
}

.form-status.success {
  display: block;
  background: rgba(22, 163, 74, 0.08);
  border: 1px solid rgba(22, 163, 74, 0.25);
  color: #15803d;
}

/* Site Footer */
.site-footer {
  background: #f8fafc;
  border-top: 1px solid var(--color-border);
  padding: 4rem 0 2rem;
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1.5fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}


.footer-brand {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-text-primary);
  margin-bottom: 0.75rem;
}

.footer-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: 1rem;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

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

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid var(--color-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
}

/* Mobile Toggle & Responsive Breakpoints */
.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: var(--color-text-primary);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 0.5rem;
}

@media (max-width: 992px) {
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .hero-cta-group {
    justify-content: center;
  }

  .metrics-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .comparison-grid {
    grid-template-columns: 1fr;
  }

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

  .produce-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

@media (max-width: 768px) {
  .produce-grid {
    grid-template-columns: 1fr;
  }

  .mobile-menu-btn {
    display: block;
  }

  .nav-links {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(16px);
    flex-direction: column;
    padding: 2rem;
    gap: 1.5rem;
    border-bottom: 1px solid var(--color-border);
    transform: translateY(-150%);
    transition: transform var(--transition-normal);
  }

  .nav-links.open {
    transform: translateY(0);
  }

  .inquiry-wrapper {
    padding: 2rem 1.5rem;
  }

  .dim-grid {
    grid-template-columns: 1fr;
  }
}