:root {
  --bg-canvas: #ffffff;
  --bg-surface: #f8fafc;
  --bg-surface-alt: #f1f5f9;
  --text-primary: #1e293b;
  --text-muted: #475569;
  --accent-primary: #047857;
  --accent-hover: #065f46;
  --accent-light: #d1fae5;
  --accent-border: #10b981;
  --border-subtle: #cbd5e1;
  --border-strong: #94a3b8;
  --font-main: "Trebuchet MS", "Segoe UI", system-ui, sans-serif;
  --line-height-base: 1.7;
  --max-width: 1180px;
  --reading-width: 68ch;
}

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

body {
  font-family: var(--font-main);
  background-color: var(--bg-canvas);
  color: var(--text-primary);
  line-height: var(--line-height-base);
  overflow-wrap: anywhere;
  hyphens: auto;
  -webkit-font-smoothing: antialiased;
}

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

/* Header & Navigation (moves naturally on scroll) */
.site-header {
  position: static;
  background-color: #ffffff;
  border-bottom: 2px solid var(--text-primary);
  padding: 1rem 1.5rem;
  width: 100%;
}

.header-container {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.brand-badge {
  text-align: left;
  text-decoration: none;
  color: var(--text-primary);
  display: flex;
  flex-direction: column;
}

.brand-title {
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  text-transform: uppercase;
  color: var(--text-primary);
  line-height: 1.1;
}

.brand-sub {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent-primary);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.nav-desktop {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.nav-desktop a {
  color: var(--text-primary);
  text-decoration: none;
  font-weight: 700;
  font-size: 0.95rem;
  padding: 0.4rem 0.2rem;
  position: relative;
  transition: color 0.2s ease;
}

.nav-desktop a:hover,
.nav-desktop a.active {
  color: var(--accent-primary);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.nav-toggle-btn {
  display: none;
  background: var(--bg-surface-alt);
  border: 1px solid var(--border-subtle);
  font-size: 1.5rem;
  line-height: 1;
  padding: 0.4rem 0.75rem;
  cursor: pointer;
  color: var(--text-primary);
}

.mobile-nav-panel {
  display: none;
  background: #ffffff;
  border-bottom: 2px solid var(--accent-primary);
  padding: 1rem 1.5rem;
}

.mobile-nav-panel.open {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.mobile-nav-panel a {
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 700;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--bg-surface-alt);
}

/* Layout Utilities */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 3rem 1.5rem;
}

.container-narrow {
  max-width: var(--reading-width);
  margin: 0 auto;
  padding: 3rem 1.5rem;
}

.section-band {
  background-color: var(--bg-surface-alt);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  background-image: radial-gradient(var(--border-subtle) 1px, transparent 1px);
  background-size: 20px 20px;
}

.split-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
  margin: 2.5rem 0;
}

.split-section.reverse {
  direction: rtl;
}

.split-section.reverse > * {
  direction: ltr;
}

.split-text h2, .split-text h3 {
  font-size: 1.85rem;
  line-height: 1.25;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.split-text p {
  color: var(--text-muted);
  margin-bottom: 1.25rem;
}

.visual-container {
  border: 1px solid var(--border-subtle);
  background: #ffffff;
  position: relative;
}

.classification-tag {
  display: inline-block;
  background: var(--accent-primary);
  color: #ffffff;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.25rem 0.6rem;
  position: absolute;
  top: 12px;
  left: 12px;
  z-index: 2;
}

.visual-container img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.visual-caption {
  padding: 0.75rem 1rem;
  font-size: 0.85rem;
  color: var(--text-muted);
  background: #ffffff;
  border-top: 1px solid var(--border-subtle);
}

/* Hero Section */
.hero-wrapper {
  background: #ffffff;
  border-bottom: 1px solid var(--border-subtle);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 3rem;
  align-items: center;
  padding: 4rem 1.5rem;
  max-width: var(--max-width);
  margin: 0 auto;
}

.hero-content h1 {
  font-size: 2.6rem;
  line-height: 1.15;
  font-weight: 900;
  color: var(--text-primary);
  letter-spacing: -0.02em;
  margin-bottom: 1.25rem;
}

.hero-content p {
  font-size: 1.15rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 2rem;
}

.btn-pill {
  display: inline-block;
  background-color: var(--accent-primary);
  color: #ffffff;
  font-weight: 700;
  font-size: 1rem;
  padding: 0.85rem 2rem;
  border-radius: 9999px;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: background-color 0.2s ease, transform 0.15s ease;
}

.btn-pill:hover {
  background-color: var(--accent-hover);
  color: #ffffff;
}

.btn-secondary {
  background-color: transparent;
  color: var(--text-primary);
  border: 2px solid var(--text-primary);
  margin-left: 0.75rem;
}

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

/* Feature Cards & Bento Layouts */
.grid-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin: 2.5rem 0;
}

.card-workshop {
  background: #ffffff;
  border: 1px solid var(--border-subtle);
  padding: 0;
  display: flex;
  flex-direction: column;
}

.card-workshop .card-body {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.card-workshop h3 {
  font-size: 1.35rem;
  margin-bottom: 0.75rem;
  line-height: 1.3;
}

.card-workshop p {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 1.25rem;
  flex-grow: 1;
}

.card-link {
  font-weight: 700;
  color: var(--accent-primary);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.card-link:hover {
  text-decoration: underline;
}

/* Data Tables */
.table-responsive {
  width: 100%;
  overflow-x: auto;
  margin: 2rem 0;
  border: 1px solid var(--border-subtle);
}

table.scree-specs {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.95rem;
  background: #ffffff;
}

table.scree-specs th,
table.scree-specs td {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border-subtle);
}

table.scree-specs th {
  background: var(--bg-surface-alt);
  font-weight: 800;
  text-transform: uppercase;
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  color: var(--text-primary);
}

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

/* Interactive Calculator Tool */
.calculator-box {
  background: #ffffff;
  border: 2px solid var(--text-primary);
  padding: 2rem;
  margin: 2.5rem 0;
}

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

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

.form-group label {
  display: block;
  font-weight: 700;
  font-size: 0.9rem;
  margin-bottom: 0.4rem;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--border-subtle);
  background: var(--bg-surface);
  font-family: inherit;
  font-size: 1rem;
  color: var(--text-primary);
}

.calc-results {
  background: var(--bg-surface-alt);
  border: 1px solid var(--border-subtle);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.metric-badge {
  font-size: 2rem;
  font-weight: 900;
  color: var(--accent-primary);
  line-height: 1;
  margin: 0.5rem 0;
}

.metric-label {
  font-size: 0.85rem;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--text-muted);
}

/* Contact Tool Styles */
.message-preview {
  background: #ffffff;
  border: 1px solid var(--border-subtle);
  padding: 1.25rem;
  white-space: pre-wrap;
  font-family: monospace;
  font-size: 0.9rem;
  margin: 1rem 0;
  min-height: 120px;
}

/* Footer Specifications */
.site-footer {
  background: #ffffff;
  border-top: 2px solid var(--text-primary);
  padding: 4rem 1.5rem 2rem 1.5rem;
  margin-top: 4rem;
}

.footer-grid {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 2.5rem;
  margin-bottom: 3rem;
}

.footer-col h4 {
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1.2rem;
  color: var(--text-primary);
}

.footer-col ul {
  list-style: none;
}

.footer-col ul li {
  margin-bottom: 0.6rem;
}

.footer-col ul li a {
  text-decoration: none;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.footer-col ul li a:hover {
  color: var(--accent-primary);
  text-decoration: underline;
}

.footer-legal-bar {
  max-width: var(--max-width);
  margin: 0 auto;
  padding-top: 2rem;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: var(--text-muted);
  gap: 1rem;
}

/* Responsive Rules */
@media (max-width: 900px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  .split-section {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  .split-section.reverse {
    direction: ltr;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .calc-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 650px) {
  .nav-desktop {
    display: none;
  }
  .nav-toggle-btn {
    display: block;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .hero-content h1 {
    font-size: 2rem;
  }
}

@media (prefers-reduced-motion: reduce){*,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}}