/* ==========================================================================
   ENROVCHEM - Industrial Chemical Manufacturing & Formulation
   Modern, Clean Industrial Design System
   ========================================================================== */

:root {
  /* Brand Colors (derived directly from ENROVCHEM logo) */
  --blue-600: #005fa8;
  --blue-700: #004b87;
  --blue-800: #003764;
  --blue-900: #002240;
  --blue-50:  #eff6fc;
  --blue-100: #dbeafe;
  --blue-200: #bfdbfe;

  --green-600: #38a136;
  --green-700: #2b8229;
  --green-800: #1e631d;
  --green-50:  #f0fdf0;
  --green-100: #dcfce7;

  /* Neutrals & Slate */
  --slate-900: #0f172a;
  --slate-800: #1e293b;
  --slate-700: #334155;
  --slate-600: #475569;
  --slate-500: #64748b;
  --slate-400: #94a3b8;
  --slate-300: #cbd5e1;
  --slate-200: #e2e8f0;
  --slate-100: #f1f5f9;
  --slate-50:  #f8fafc;
  --white:     #ffffff;

  /* Functional mappings */
  --color-primary: var(--blue-600);
  --color-primary-hover: var(--blue-700);
  --color-accent: var(--green-600);
  --color-accent-hover: var(--green-700);
  --color-text: var(--slate-800);
  --color-heading: var(--slate-900);
  --color-text-muted: var(--slate-600);
  --color-bg: var(--white);
  --color-bg-alt: var(--slate-50);
  --color-border: var(--slate-200);

  /* Layout */
  --container-max-width: 1240px;
  --container-padding: 1.5rem;
  --header-height: 80px;

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

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.05);
  --shadow-md: 0 4px 12px rgba(15, 23, 42, 0.06);
  --shadow-lg: 0 10px 24px -3px rgba(15, 23, 42, 0.08);
  --shadow-card: 0 2px 8px rgba(15, 23, 42, 0.04), 0 0 1px rgba(15, 23, 42, 0.1);

  /* Radii */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-pill: 9999px;

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  overflow-x: hidden;
  width: 100%;
  max-width: 100%;
}

body {
  font-family: var(--font-family);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  overflow-x: hidden;
  width: 100%;
  max-width: 100%;
}

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

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

a:hover {
  color: var(--color-primary-hover);
}

h1, h2, h3, h4, h5, h6 {
  color: var(--color-heading);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.02em;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.35rem; }
h4 { font-size: 1.15rem; }

p {
  margin-bottom: 1rem;
}

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

ul, ol {
  list-style: none;
}

/* --------------------------------------------------------------------------
   Layout Containers & Utilities
   -------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--container-padding);
  padding-right: var(--container-padding);
}

.section {
  padding: 5rem 0;
}

.section-sm {
  padding: 3.5rem 0;
}

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

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 3.5rem auto;
}

.section-header-left {
  text-align: left;
  margin-bottom: 2.5rem;
}

.section-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-primary);
  background-color: var(--blue-50);
  border: 1px solid var(--blue-200);
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-pill);
  margin-bottom: 1rem;
}

.section-eyebrow.eyebrow-green {
  color: var(--green-700);
  background-color: var(--green-50);
  border-color: var(--green-100);
}

.section-title {
  margin-bottom: 1rem;
}

.section-subtitle {
  font-size: 1.125rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* --------------------------------------------------------------------------
   Header & Navigation
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
  height: var(--header-height);
  display: flex;
  align-items: center;
  transition: box-shadow var(--transition-fast);
}

.site-header.scrolled {
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.05);
}

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

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

.header-logo-img {
  height: 48px;
  width: auto;
  object-fit: contain;
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}

.nav-link {
  font-weight: 600;
  font-size: 0.9375rem;
  color: var(--slate-700);
  padding: 0.4rem 0.2rem;
  position: relative;
  transition: color var(--transition-fast);
}

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

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--color-primary);
  border-radius: 2px;
}

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

.menu-toggle {
  display: none;
  background: none;
  border: 1px solid var(--slate-200);
  padding: 0.5rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  color: var(--slate-800);
}

.menu-toggle:focus-visible {
  outline: 2px solid var(--color-primary);
}

.menu-toggle svg {
  width: 24px;
  height: 24px;
}

/* --------------------------------------------------------------------------
   Buttons & Links
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-weight: 600;
  font-size: 0.9375rem;
  padding: 0.75rem 1.4rem;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  line-height: 1.25;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--white);
  border-color: var(--color-primary);
}

.btn-primary:hover {
  background-color: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
  color: var(--white);
}

.btn-secondary {
  background-color: var(--white);
  color: var(--slate-800);
  border-color: var(--slate-300);
}

.btn-secondary:hover {
  background-color: var(--slate-50);
  border-color: var(--slate-400);
  color: var(--slate-900);
}

.btn-green {
  background-color: var(--color-accent);
  color: var(--white);
  border-color: var(--color-accent);
}

.btn-green:hover {
  background-color: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
  color: var(--white);
}

.btn-outline-primary {
  background-color: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn-outline-primary:hover {
  background-color: var(--blue-50);
  color: var(--color-primary-hover);
}

.btn-lg {
  padding: 0.9rem 1.75rem;
  font-size: 1rem;
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
}

.btn-icon {
  width: 18px;
  height: 18px;
}

/* --------------------------------------------------------------------------
   Hero Section
   -------------------------------------------------------------------------- */
.hero {
  padding: 4.5rem 0 4rem 0;
  background: linear-gradient(180deg, #f8fafc 0%, #ffffff 100%);
  border-bottom: 1px solid var(--color-border);
}

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

.hero-title {
  font-size: 3rem;
  line-height: 1.18;
  margin-bottom: 1.25rem;
  color: var(--slate-900);
}

.hero-description {
  font-size: 1.15rem;
  line-height: 1.65;
  color: var(--slate-600);
  margin-bottom: 2rem;
  max-width: 580px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  padding-top: 1.75rem;
  border-top: 1px solid var(--slate-200);
}

.hero-badge-item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--slate-700);
}

.hero-badge-item svg {
  color: var(--color-accent);
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-product-card {
  position: relative;
  background-color: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 480px;
  text-align: center;
}

.hero-product-img {
  width: 100%;
  max-height: 400px;
  object-fit: contain;
  margin: 0 auto 1.25rem auto;
  border-radius: var(--radius-md);
  background-color: #fafbfc;
}

.hero-product-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 1rem;
  border-top: 1px solid var(--slate-100);
  font-size: 0.875rem;
}

.hero-product-tag {
  font-weight: 700;
  color: var(--color-primary);
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.hero-product-grade {
  color: var(--slate-500);
  font-weight: 500;
}

/* --------------------------------------------------------------------------
   Feature Cards & Grids
   -------------------------------------------------------------------------- */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.card {
  background-color: var(--white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 2rem;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
}

.card:hover {
  border-color: var(--slate-300);
  box-shadow: var(--shadow-md);
}

.card-icon {
  width: 48px;
  height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  background-color: var(--blue-50);
  color: var(--color-primary);
  margin-bottom: 1.25rem;
}

.card-icon.icon-green {
  background-color: var(--green-50);
  color: var(--green-700);
}

.card-title {
  font-size: 1.2rem;
  margin-bottom: 0.75rem;
}

.card-description {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  line-height: 1.6;
}

/* --------------------------------------------------------------------------
   Featured Product Section
   -------------------------------------------------------------------------- */
.product-feature-grid {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  align-items: center;
  gap: 3.5rem;
  background-color: var(--white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 3rem;
  box-shadow: var(--shadow-card);
}

.product-feature-img-wrap {
  background-color: var(--slate-50);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  display: flex;
  justify-content: center;
  align-items: center;
}

.product-feature-img {
  width: 100%;
  max-height: 440px;
  object-fit: contain;
}

.product-feature-content h2 {
  margin-bottom: 1rem;
}

.product-feature-lead {
  font-size: 1.1rem;
  color: var(--slate-700);
  margin-bottom: 1.5rem;
  line-height: 1.65;
}

.feature-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.85rem;
  margin: 1.5rem 0 2rem 0;
}

.feature-list-item {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  font-size: 0.9375rem;
  color: var(--slate-700);
  font-weight: 500;
}

.feature-list-item svg {
  width: 18px;
  height: 18px;
  color: var(--green-700);
  flex-shrink: 0;
  margin-top: 2px;
}

/* --------------------------------------------------------------------------
   Packaging Cards
   -------------------------------------------------------------------------- */
.packaging-card {
  background-color: var(--white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  transition: all var(--transition-fast);
}

.packaging-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
}

.packaging-img-wrap {
  background-color: var(--slate-50);
  border-radius: var(--radius-sm);
  padding: 1.25rem;
  margin-bottom: 1.25rem;
  height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.packaging-img {
  max-height: 170px;
  width: auto;
  object-fit: contain;
}

.packaging-title {
  font-size: 1.15rem;
  margin-bottom: 0.35rem;
}

.packaging-type {
  font-size: 0.875rem;
  color: var(--slate-500);
  margin-bottom: 0.75rem;
}

.packaging-desc {
  font-size: 0.85rem;
  color: var(--slate-600);
  margin-top: auto;
  padding-top: 0.75rem;
  border-top: 1px dashed var(--slate-200);
}

.packaging-notice {
  text-align: center;
  margin-top: 2rem;
  font-size: 0.875rem;
  color: var(--slate-500);
  font-style: italic;
}

/* --------------------------------------------------------------------------
   Industries Grid
   -------------------------------------------------------------------------- */
.industry-card {
  background-color: var(--white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 1.5rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  transition: all var(--transition-fast);
}

.industry-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.industry-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background-color: var(--blue-50);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.industry-name {
  font-size: 1rem;
  font-weight: 600;
  color: var(--slate-800);
}

/* --------------------------------------------------------------------------
   CTA Banner
   -------------------------------------------------------------------------- */
.cta-banner {
  background-color: var(--slate-900);
  color: var(--white);
  border-radius: var(--radius-lg);
  padding: 4rem 3rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-banner::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-accent) 100%);
}

.cta-title {
  color: var(--white);
  font-size: 2.25rem;
  margin-bottom: 1rem;
}

.cta-subtitle {
  color: var(--slate-300);
  font-size: 1.125rem;
  max-width: 650px;
  margin: 0 auto 2rem auto;
}

.cta-actions {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

/* --------------------------------------------------------------------------
   Technical Product Table & Characteristics
   -------------------------------------------------------------------------- */
.specs-table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  background-color: var(--white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.specs-table th,
.specs-table td {
  padding: 0.9rem 1.25rem;
  text-align: left;
  font-size: 0.9375rem;
  border-bottom: 1px solid var(--color-border);
}

.specs-table th {
  background-color: var(--slate-50);
  color: var(--slate-900);
  font-weight: 700;
  width: 35%;
}

.specs-table td {
  color: var(--slate-700);
}

.specs-table tr:last-child th,
.specs-table tr:last-child td {
  border-bottom: none;
}

/* --------------------------------------------------------------------------
   Approach Steps (About Page)
   -------------------------------------------------------------------------- */
.approach-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  position: relative;
}

.step-card {
  background-color: var(--white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 2rem 1.5rem;
  position: relative;
}

.step-number {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--color-primary);
  background-color: var(--blue-50);
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius-sm);
  display: inline-block;
  margin-bottom: 1rem;
}

.step-title {
  font-size: 1.15rem;
  margin-bottom: 0.6rem;
}

.step-desc {
  font-size: 0.875rem;
  color: var(--slate-600);
  line-height: 1.55;
}

/* --------------------------------------------------------------------------
   Contact Page Styles
   -------------------------------------------------------------------------- */
.contact-grid {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 3.5rem;
  align-items: flex-start;
}

.contact-info-card {
  background-color: var(--white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: var(--shadow-card);
}

.contact-detail-list {
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
  margin: 2rem 0;
}

.contact-detail-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.contact-icon-box {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background-color: var(--blue-50);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-detail-label {
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--slate-500);
  margin-bottom: 0.2rem;
}

.contact-detail-value {
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--slate-800);
}

.contact-actions-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
  margin-top: 2rem;
}

.form-card {
  background-color: var(--white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: var(--shadow-card);
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--slate-700);
  margin-bottom: 0.4rem;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  font-family: inherit;
  font-size: 16px; /* Prevents auto-zoom on iOS Safari */
  color: var(--slate-800);
  background-color: var(--white);
  border: 1px solid var(--slate-300);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  -webkit-appearance: none;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(0, 95, 168, 0.15);
}

.form-textarea {
  min-height: 120px;
  resize: vertical;
}

.form-help {
  font-size: 0.8125rem;
  color: var(--slate-500);
  margin-top: 0.35rem;
}

.form-status-alert {
  padding: 1rem;
  border-radius: var(--radius-sm);
  margin-top: 1rem;
  font-size: 0.9rem;
  display: none;
}

.form-status-alert.success {
  background-color: var(--green-50);
  border: 1px solid var(--green-100);
  color: var(--green-800);
  display: block;
}

.form-status-alert.error {
  background-color: #fef2f2;
  border: 1px solid #fee2e2;
  color: #991b1b;
  display: block;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

@media (max-width: 640px) {
  .form-row {
    grid-template-columns: 1fr;
    gap: 0;
  }
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.site-footer {
  margin-top: auto;
  background-color: var(--slate-900);
  color: var(--slate-300);
  padding: 4.5rem 0 2rem 0;
  border-top: 1px solid var(--slate-800);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 3rem;
  margin-bottom: 3.5rem;
}

.footer-logo {
  height: 44px;
  width: auto;
  margin-bottom: 1.25rem;
  background-color: #ffffff;
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  display: inline-block;
}

.footer-desc {
  font-size: 0.9375rem;
  color: var(--slate-400);
  line-height: 1.6;
  max-width: 320px;
}

.footer-heading {
  font-size: 0.875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--white);
  margin-bottom: 1.25rem;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-link {
  color: var(--slate-400);
  font-size: 0.9375rem;
  transition: color var(--transition-fast);
}

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

.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  font-size: 0.9375rem;
  color: var(--slate-400);
  margin-bottom: 0.75rem;
}

.footer-contact-item svg {
  width: 18px;
  height: 18px;
  color: var(--color-primary);
  flex-shrink: 0;
  margin-top: 3px;
}

.footer-contact-item a {
  color: var(--slate-300);
}

.footer-contact-item a:hover {
  color: var(--white);
}

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  font-size: 0.85rem;
  color: var(--slate-500);
}


/* --------------------------------------------------------------------------
   Floating WhatsApp Button
   -------------------------------------------------------------------------- */
.whatsapp-float {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 999;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  background-color: #25D366;
  color: var(--white);
  padding: 0.75rem 1.15rem;
  border-radius: var(--radius-pill);
  box-shadow: 0 4px 14px rgba(37, 211, 102, 0.4);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.875rem;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-fast);
}

.whatsapp-float:hover {
  background-color: #20ba5a;
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(37, 211, 102, 0.5);
}

.whatsapp-float svg {
  width: 22px;
  height: 22px;
  fill: currentColor;
}

/* --------------------------------------------------------------------------
   Portfolio Development Cards
   -------------------------------------------------------------------------- */
.portfolio-card {
  background-color: var(--white);
  border: 1px dashed var(--slate-300);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  background: linear-gradient(180deg, #ffffff 0%, #fafbfc 100%);
}

.portfolio-badge {
  display: inline-block;
  align-self: flex-start;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius-pill);
  background-color: var(--blue-50);
  color: var(--blue-700);
  border: 1px solid var(--blue-200);
  margin-bottom: 1rem;
}

/* --------------------------------------------------------------------------
   Storytelling Layout & Typography (About Page)
   -------------------------------------------------------------------------- */
.story-container {
  max-width: 860px;
  margin: 0 auto;
}

.story-block {
  margin-bottom: 3.5rem;
  padding-bottom: 3rem;
  border-bottom: 1px solid var(--slate-200);
}

.story-block:last-child {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: none;
}

.story-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-primary);
  margin-bottom: 0.75rem;
}

.story-tag.tag-green {
  color: var(--green-700);
}

.story-heading {
  font-size: 1.85rem;
  line-height: 1.3;
  margin-bottom: 1.25rem;
  color: var(--slate-900);
}

.story-lead {
  font-size: 1.15rem;
  line-height: 1.7;
  color: var(--slate-800);
  margin-bottom: 1.25rem;
  font-weight: 500;
}

.story-text {
  font-size: 1.025rem;
  line-height: 1.75;
  color: var(--slate-600);
  margin-bottom: 1.25rem;
}

.story-quote-card {
  background-color: var(--blue-50);
  border-left: 4px solid var(--color-primary);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: 1.5rem 1.75rem;
  margin: 2rem 0;
}

.story-quote-text {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--slate-900);
  line-height: 1.6;
}

/* --------------------------------------------------------------------------
   Responsive Media Queries
   -------------------------------------------------------------------------- */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .hero-visual {
    order: -1;
    max-width: 520px;
    margin: 0 auto;
  }

  .product-feature-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
    padding: 2rem;
  }

  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .contact-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

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

@media (max-width: 768px) {
  :root {
    --header-height: 68px;
    --container-padding: 1.25rem;
  }

  .section {
    padding: 3.25rem 0;
  }

  .section-sm {
    padding: 2.5rem 0;
  }

  .section-header {
    margin-bottom: 2.5rem;
  }

  .section-title {
    font-size: 1.75rem;
  }

  .section-subtitle {
    font-size: 1rem;
  }

  .hero-title {
    font-size: 2.1rem;
    line-height: 1.25;
  }

  .hero-subtitle {
    font-size: 1.05rem;
  }

  .header-logo-img {
    max-width: 175px;
    height: auto;
  }

  .menu-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    padding: 0;
    border-radius: var(--radius-sm);
    background: transparent;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
  }

  .header-nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    bottom: 0;
    height: calc(100vh - var(--header-height));
    background-color: var(--white);
    border-top: 1px solid var(--slate-100);
    padding: 1.5rem 1.25rem 2.5rem 1.25rem;
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: 1.5rem;
    box-shadow: var(--shadow-lg);
    display: none;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    z-index: 999;
  }

  .header-nav.is-open {
    display: flex;
  }

  .nav-links {
    flex-direction: column;
    align-items: stretch;
    gap: 0.25rem;
    width: 100%;
  }

  .nav-link {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--slate-800);
    width: 100%;
    padding: 0.85rem 0.5rem;
    border-bottom: 1px solid var(--slate-100);
    display: flex;
    align-items: center;
    justify-content: space-between;
  }

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

  .nav-actions {
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    margin-top: 0.5rem;
  }

  .nav-actions .btn {
    width: 100%;
    padding: 0.85rem 1.25rem;
    font-size: 1rem;
    justify-content: center;
  }

  .grid-2,
  .grid-3,
  .grid-4,
  .approach-steps,
  .feature-list {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }

  .packaging-card {
    padding: 1.25rem;
  }

  .packaging-img-wrap {
    height: 170px;
    padding: 1rem;
  }

  .story-block {
    margin-bottom: 2.5rem;
    padding-bottom: 2rem;
  }

  .story-heading {
    font-size: 1.5rem;
  }

  .story-lead {
    font-size: 1.05rem;
  }

  .story-text {
    font-size: 0.95rem;
  }

  .story-quote-card {
    padding: 1.25rem;
    margin: 1.5rem 0;
  }

  .contact-actions-grid {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }

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

  .cta-banner {
    padding: 2.5rem 1.25rem;
    border-radius: var(--radius-md);
  }

  .cta-title {
    font-size: 1.65rem;
  }

  .cta-subtitle {
    font-size: 0.95rem;
  }

  .cta-actions {
    flex-direction: column;
    width: 100%;
  }

  .cta-actions .btn {
    width: 100%;
    justify-content: center;
  }

  .whatsapp-text {
    display: none;
  }

  .whatsapp-float {
    padding: 0.85rem;
    border-radius: 50%;
    bottom: calc(1.25rem + env(safe-area-inset-bottom, 0px));
    right: 1.25rem;
    box-shadow: 0 4px 14px rgba(37, 211, 102, 0.45);
  }
}

@media (max-width: 480px) {
  :root {
    --header-height: 64px;
    --container-padding: 1rem;
  }

  .hero-title {
    font-size: 1.75rem;
    letter-spacing: -0.02em;
  }

  .hero-badge {
    font-size: 0.75rem;
    padding: 0.3rem 0.75rem;
  }

  .hero-actions {
    flex-direction: column;
    width: 100%;
    gap: 0.75rem;
  }

  .hero-actions .btn {
    width: 100%;
    justify-content: center;
  }

  .header-logo-img {
    max-width: 155px;
  }

  .form-card {
    padding: 1.5rem 1.15rem;
    border-radius: var(--radius-md);
  }

  .form-card h2 {
    font-size: 1.5rem !important;
  }

  /* Responsive card-based display for specs table */
  .specs-table,
  .specs-table tbody,
  .specs-table tr,
  .specs-table th,
  .specs-table td {
    display: block;
    width: 100%;
  }

  .specs-table tr {
    margin-bottom: 0.85rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    overflow: hidden;
    background: var(--white);
  }

  .specs-table th {
    background-color: var(--slate-100);
    padding: 0.6rem 0.85rem;
    font-size: 0.8rem;
    color: var(--slate-800);
    border-bottom: 1px solid var(--color-border);
    width: 100%;
  }

  .specs-table td {
    padding: 0.75rem 0.85rem;
    font-size: 0.875rem;
    border-bottom: none;
    color: var(--slate-700);
  }

  .specs-table tr:last-child {
    margin-bottom: 0;
  }
}