/* ==========================================================================
   GEGEN DEN STROM – ELEKTROTECHNIK & SYSTEMINTEGRATION
   Stilvorgabe: Technisch & Ingenieursmäßig (Präzise, metallisch, strukturiert)
   ========================================================================== */

:root {
  /* Palette: Kühle Graphit-, Schiefer- und Stahlblautöne */
  --bg-obsidian: #070a0f;
  --bg-graphite: #0c111a;
  --bg-slate: #111827;
  --bg-panel: #161f30;
  --bg-panel-hover: #1c283d;
  --bg-metal-light: #f1f5f9;
  --bg-surface-steel: #1e293b;

  /* Borders & Grid Lines */
  --border-grid: rgba(148, 163, 184, 0.14);
  --border-strong: rgba(56, 189, 248, 0.35);
  --border-metallic: #283548;

  /* Accents: Steel Blue, Electric Cyan & High-Voltage Amber */
  --accent-cyan: #0ea5e9;
  --accent-cyan-bright: #38bdf8;
  --accent-steel: #64748b;
  --accent-amber: #f59e0b;
  --accent-emerald: #10b981;
  --whatsapp-green: #25D366;
  --whatsapp-green-hover: #20ba5a;

  /* Typography Colors */
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --text-mono: #7dd3fc;

  /* Fonts */
  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-display: 'Space Grotesk', 'Plus Jakarta Sans', sans-serif;
  --font-mono: 'JetBrains Mono', 'Courier New', monospace;

  /* Engineering Geometry */
  --radius-xs: 2px;
  --radius-sm: 4px;
  --radius-md: 6px;
  --shadow-panel: 0 12px 32px -8px rgba(0, 0, 0, 0.6), 0 0 0 1px rgba(148, 163, 184, 0.12);
  --shadow-glow: 0 0 25px rgba(14, 165, 233, 0.2);
  --transition-fast: 0.18s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-smooth: 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  background-color: var(--bg-obsidian);
  color: var(--text-primary);
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-obsidian);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  /* Subtiles technisches CAD-Gitternetz im Hintergrund */
  background-image: 
    linear-gradient(to right, rgba(148, 163, 184, 0.035) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(148, 163, 184, 0.035) 1px, transparent 1px);
  background-size: 48px 48px;
}

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

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

ul, ol {
  list-style: none;
}

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  background: none;
  border: none;
}

button {
  cursor: pointer;
}

/* ==========================================================================
   TECHNICAL UTILITY CLASSES & CAD DECORATIONS
   ========================================================================== */

.container {
  width: 100%;
  max-width: 1340px;
  margin: 0 auto;
  padding: 0 24px;
}

.mono-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-mono);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 4px 10px;
  background: rgba(14, 165, 233, 0.1);
  border: 1px solid rgba(56, 189, 248, 0.25);
  border-radius: var(--radius-xs);
}

.mono-tag::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--accent-cyan-bright);
  display: inline-block;
  box-shadow: 0 0 8px var(--accent-cyan-bright);
}

.mono-tag--amber {
  color: #fcd34d;
  background: rgba(245, 158, 11, 0.1);
  border-color: rgba(245, 158, 11, 0.3);
}

.mono-tag--amber::before {
  background: var(--accent-amber);
  box-shadow: 0 0 8px var(--accent-amber);
}

.section-padding {
  padding: 100px 0;
  position: relative;
  border-bottom: 1px solid var(--border-grid);
}

.section-header {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: end;
  gap: 24px;
  margin-bottom: 56px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border-grid);
  position: relative;
}

.section-header::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 120px;
  height: 2px;
  background: var(--accent-cyan);
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.85rem, 3.2vw, 2.75rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-top: 14px;
  color: var(--text-primary);
}

.section-subtitle {
  color: var(--text-secondary);
  font-size: 1.05rem;
  max-width: 640px;
  margin-top: 12px;
}

.section-meta {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  text-align: right;
  border-left: 2px solid var(--border-metallic);
  padding-left: 16px;
}

/* Corner Crosshairs for Technical Panels */
.tech-card {
  background: linear-gradient(180deg, rgba(22, 31, 48, 0.88) 0%, rgba(12, 17, 26, 0.95) 100%);
  border: 1px solid var(--border-metallic);
  border-radius: var(--radius-sm);
  position: relative;
  transition: transform var(--transition-smooth), border-color var(--transition-smooth), box-shadow var(--transition-smooth);
}

.tech-card::before,
.tech-card::after {
  content: '';
  position: absolute;
  width: 8px;
  height: 8px;
  border-color: var(--accent-cyan);
  border-style: solid;
  opacity: 0.45;
  transition: opacity var(--transition-fast), width var(--transition-fast), height var(--transition-fast);
  pointer-events: none;
}

.tech-card::before {
  top: -1px;
  left: -1px;
  border-width: 2px 0 0 2px;
}

.tech-card::after {
  bottom: -1px;
  right: -1px;
  border-width: 0 2px 2px 0;
}

.tech-card:hover {
  border-color: var(--border-strong);
  box-shadow: var(--shadow-panel), var(--shadow-glow);
  transform: translateY(-3px);
}

.tech-card:hover::before,
.tech-card:hover::after {
  opacity: 1;
  width: 14px;
  height: 14px;
}

/* ==========================================================================
   BUTTONS & CTAs
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 24px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.92rem;
  letter-spacing: 0.02em;
  border-radius: var(--radius-xs);
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent-cyan);
  color: #04070b;
  border: 1px solid var(--accent-cyan-bright);
  box-shadow: 0 4px 20px rgba(14, 165, 233, 0.3);
}

.btn-primary:hover {
  background: var(--accent-cyan-bright);
  box-shadow: 0 6px 25px rgba(56, 189, 248, 0.5);
  transform: translateY(-1px);
}

.btn-secondary {
  background: rgba(30, 41, 59, 0.7);
  color: var(--text-primary);
  border: 1px solid var(--border-metallic);
}

.btn-secondary:hover {
  background: var(--bg-panel-hover);
  border-color: var(--accent-cyan);
  color: var(--accent-cyan-bright);
}

.btn-amber {
  background: rgba(245, 158, 11, 0.14);
  color: #fbbf24;
  border: 1px solid rgba(245, 158, 11, 0.4);
}

.btn-amber:hover {
  background: var(--accent-amber);
  color: #070a0f;
}

.btn-whatsapp {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 22px;
  background: rgba(37, 211, 102, 0.14);
  color: #4ade80;
  border: 1px solid rgba(37, 211, 102, 0.45);
  border-radius: var(--radius-xs);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.92rem;
  transition: all var(--transition-fast);
}

.btn-whatsapp:hover {
  background: var(--whatsapp-green);
  color: #ffffff;
  border-color: var(--whatsapp-green);
  box-shadow: 0 6px 20px rgba(37, 211, 102, 0.35);
  transform: translateY(-1px);
}

/* ==========================================================================
   TOP TELEMETRY BAR & HEADER NAVIGATION
   ========================================================================== */

.telemetry-bar {
  background: #040609;
  border-bottom: 1px solid var(--border-grid);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--text-secondary);
  padding: 8px 0;
}

.telemetry-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.telemetry-group {
  display: flex;
  align-items: center;
  gap: 20px;
}

.telemetry-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent-emerald);
  box-shadow: 0 0 8px var(--accent-emerald);
  animation: pulseDot 2s infinite;
}

@keyframes pulseDot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(7, 10, 15, 0.88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-metallic);
  transition: all var(--transition-fast);
}

.site-header.is-scrolled {
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.7);
  border-bottom-color: rgba(56, 189, 248, 0.25);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
  gap: 24px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-emblem {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, #0ea5e9 0%, #0369a1 100%);
  border: 1px solid var(--accent-cyan-bright);
  border-radius: var(--radius-xs);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #04070b;
  font-weight: 800;
  position: relative;
  box-shadow: inset 0 0 10px rgba(255, 255, 255, 0.25);
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: 0.04em;
  color: var(--text-primary);
  line-height: 1.1;
}

.brand-sub {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--accent-cyan-bright);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-top: 2px;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav-link {
  padding: 8px 14px;
  font-size: 0.86rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-xs);
  border: 1px solid transparent;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.nav-link span.nav-idx {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent-cyan);
  opacity: 0.8;
}

.nav-link:hover,
.nav-link.active {
  color: var(--text-primary);
  background: rgba(30, 41, 59, 0.6);
  border-color: var(--border-metallic);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.mobile-menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--border-metallic);
  border-radius: var(--radius-xs);
  align-items: center;
  justify-content: center;
  color: var(--text-primary);
  background: var(--bg-panel);
}

/* ==========================================================================
   HERO SECTION (ENGINEERING BLUEPRINT & TELEMETRY HUD)
   ========================================================================== */

.hero-section {
  position: relative;
  padding: 72px 0 96px;
  border-bottom: 1px solid var(--border-metallic);
  overflow: hidden;
  background:
    radial-gradient(circle at 80% 20%, rgba(14, 165, 233, 0.14), transparent 45%),
    radial-gradient(circle at 15% 80%, rgba(30, 64, 175, 0.12), transparent 50%);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 48px;
  align-items: center;
}

.hero-kicker-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.35rem, 4.4vw, 3.85rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.025em;
  margin-bottom: 24px;
}

.hero-title .text-highlight {
  color: var(--accent-cyan-bright);
  text-shadow: 0 0 30px rgba(56, 189, 248, 0.25);
}

.hero-lead {
  font-size: 1.12rem;
  color: var(--text-secondary);
  max-width: 620px;
  margin-bottom: 36px;
  line-height: 1.7;
}

.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 44px;
}

/* Technical Spec Strip inside Hero */
.hero-telemetry-matrix {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border: 1px solid var(--border-metallic);
  background: rgba(12, 17, 26, 0.85);
  border-radius: var(--radius-xs);
}

.telemetry-cell {
  padding: 16px 18px;
  border-right: 1px solid var(--border-grid);
}

.telemetry-cell:last-child {
  border-right: none;
}

.telemetry-label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  text-transform: uppercase;
  color: var(--text-muted);
  display: block;
  margin-bottom: 4px;
}

.telemetry-value {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-primary);
}

.telemetry-unit {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent-cyan-bright);
  margin-left: 3px;
}

/* Right Column: Visual CAD Frame */
.hero-visual-frame {
  position: relative;
  border: 1px solid var(--border-metallic);
  background: var(--bg-graphite);
  padding: 14px;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-panel);
}

.cad-frame-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px;
  background: var(--bg-slate);
  border: 1px solid var(--border-grid);
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-secondary);
}

.hero-img-wrapper {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--border-grid);
  aspect-ratio: 4 / 3;
}

.hero-img-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: contrast(1.06) saturate(0.92);
}

.hero-img-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(7, 10, 15, 0.1) 0%, rgba(7, 10, 15, 0.75) 100%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 20px;
}

.schematic-readout {
  background: rgba(7, 10, 15, 0.9);
  border: 1px solid var(--border-strong);
  padding: 14px 16px;
  border-radius: var(--radius-xs);
  backdrop-filter: blur(8px);
}

.schematic-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  padding: 4px 0;
  border-bottom: 1px dashed rgba(148, 163, 184, 0.15);
}

.schematic-row:last-child {
  border-bottom: none;
}

/* Norm & Certification Strip (NO fake Google reviews!) */
.norm-bar {
  background: var(--bg-graphite);
  border-bottom: 1px solid var(--border-metallic);
  padding: 22px 0;
}

.norm-bar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
}

.norm-badge {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 16px;
  background: rgba(22, 31, 48, 0.6);
  border: 1px solid var(--border-grid);
  border-radius: var(--radius-xs);
}

.norm-code {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--accent-cyan-bright);
  padding: 4px 8px;
  background: rgba(14, 165, 233, 0.12);
  border: 1px solid rgba(56, 189, 248, 0.25);
}

.norm-desc {
  font-size: 0.83rem;
  color: var(--text-secondary);
  font-weight: 500;
}

/* ==========================================================================
   SERVICES / SYSTEM ARCHITECTURE GRID
   ========================================================================== */

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.service-card {
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.service-card-top {
  position: relative;
  height: 200px;
  overflow: hidden;
  border-bottom: 1px solid var(--border-metallic);
}

.service-card-top img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.service-card:hover .service-card-top img {
  transform: scale(1.05);
}

.service-code-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  background: rgba(7, 10, 15, 0.88);
  border: 1px solid var(--border-strong);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--accent-cyan-bright);
  padding: 4px 10px;
  backdrop-filter: blur(6px);
}

.service-body {
  padding: 26px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.service-title {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text-primary);
}

.service-desc {
  color: var(--text-secondary);
  font-size: 0.94rem;
  margin-bottom: 20px;
}

.service-spec-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: auto;
  margin-bottom: 20px;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  background: rgba(7, 10, 15, 0.55);
  border: 1px solid var(--border-grid);
}

.service-spec-table td {
  padding: 8px 10px;
  border-bottom: 1px solid var(--border-grid);
}

.service-spec-table td:first-child {
  color: var(--text-muted);
}

.service-spec-table td:last-child {
  text-align: right;
  color: var(--text-primary);
  font-weight: 600;
}

.service-link {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent-cyan-bright);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.service-link:hover {
  color: #ffffff;
  gap: 12px;
}

/* ==========================================================================
   INTERACTIVE LOAD & SYSTEM CONFIGURATOR (NETZLAST-RECHNER)
   ========================================================================== */

.calculator-wrapper {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 32px;
  background: var(--bg-graphite);
  border: 1px solid var(--border-metallic);
  padding: 36px;
  border-radius: var(--radius-sm);
}

.calc-modules-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin-top: 20px;
}

.calc-module-btn {
  text-align: left;
  padding: 16px 18px;
  background: var(--bg-slate);
  border: 1px solid var(--border-metallic);
  border-radius: var(--radius-xs);
  transition: all var(--transition-fast);
  display: flex;
  flex-direction: column;
  gap: 6px;
  position: relative;
}

.calc-module-btn:hover {
  border-color: var(--accent-cyan);
}

.calc-module-btn.is-active {
  background: rgba(14, 165, 233, 0.12);
  border-color: var(--accent-cyan-bright);
  box-shadow: inset 0 0 15px rgba(14, 165, 233, 0.15);
}

.calc-module-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
}

.calc-module-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.96rem;
  color: var(--text-primary);
}

.calc-module-kw {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent-cyan-bright);
  background: rgba(7, 10, 15, 0.7);
  padding: 2px 8px;
  border: 1px solid var(--border-grid);
}

.calc-module-sub {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.calc-output-panel {
  background: #070a0f;
  border: 1px solid var(--border-strong);
  padding: 28px;
  border-radius: var(--radius-xs);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.calc-meter-bar {
  width: 100%;
  height: 10px;
  background: var(--bg-slate);
  border: 1px solid var(--border-grid);
  margin: 14px 0 22px;
  position: relative;
  overflow: hidden;
}

.calc-meter-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-cyan) 0%, var(--accent-amber) 100%);
  width: 35%;
  transition: width 0.35s ease;
}

.calc-readout-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-bottom: 24px;
}

.calc-readout-box {
  background: var(--bg-graphite);
  border: 1px solid var(--border-grid);
  padding: 12px 14px;
}

.calc-readout-box span {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
  text-transform: uppercase;
}

.calc-readout-box strong {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  color: var(--accent-cyan-bright);
}

/* ==========================================================================
   PROJECT GALLERY & FILTERABLE REFERENCE MATRIX
   ========================================================================== */

.filter-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 36px;
}

.filter-btn {
  padding: 10px 18px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: var(--bg-slate);
  border: 1px solid var(--border-metallic);
  color: var(--text-secondary);
  border-radius: var(--radius-xs);
  transition: all var(--transition-fast);
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--accent-cyan);
  color: #04070b;
  border-color: var(--accent-cyan-bright);
  font-weight: 700;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.project-card {
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.project-card.is-hidden {
  display: none;
}

.project-img-box {
  position: relative;
  height: 230px;
  overflow: hidden;
  border-bottom: 1px solid var(--border-metallic);
}

.project-img-box img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.project-card:hover .project-img-box img {
  transform: scale(1.06);
}

.project-tag-overlay {
  position: absolute;
  bottom: 12px;
  left: 12px;
  right: 12px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.project-content {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.project-title {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.project-summary {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 18px;
}

.project-metrics {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
  padding-top: 14px;
  border-top: 1px solid var(--border-grid);
  margin-top: auto;
  font-family: var(--font-mono);
  font-size: 0.75rem;
}

.project-metrics div span {
  color: var(--text-muted);
  display: block;
  font-size: 0.68rem;
}

/* ==========================================================================
   ABOUT US & ENGINEERING TEAM
   ========================================================================== */

.about-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  margin-bottom: 72px;
}

.about-checklist {
  display: grid;
  gap: 16px;
  margin-top: 28px;
}

.about-check-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px;
  background: var(--bg-graphite);
  border: 1px solid var(--border-grid);
  border-left: 3px solid var(--accent-cyan);
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.team-card-img {
  height: 280px;
  overflow: hidden;
  border-bottom: 1px solid var(--border-metallic);
  position: relative;
}

.team-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(20%) contrast(1.05);
}

.team-card-body {
  padding: 22px;
}

.team-role {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-cyan-bright);
  text-transform: uppercase;
  margin-bottom: 4px;
}

.team-name {
  font-family: var(--font-display);
  font-size: 1.22rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.team-qual {
  font-size: 0.86rem;
  color: var(--text-secondary);
}

/* ==========================================================================
   PRICING & TECHNICAL SERVICE PACKAGES
   ========================================================================== */

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.pricing-card {
  padding: 32px;
  display: flex;
  flex-direction: column;
}

.pricing-card.featured {
  border-color: var(--accent-cyan);
  box-shadow: var(--shadow-panel), var(--shadow-glow);
  background: linear-gradient(180deg, rgba(14, 165, 233, 0.1) 0%, rgba(12, 17, 26, 0.96) 100%);
}

.pricing-price {
  font-family: var(--font-display);
  font-size: 2.3rem;
  font-weight: 800;
  color: var(--text-primary);
  margin: 18px 0 6px;
}

.pricing-price small {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 400;
  color: var(--text-muted);
}

.pricing-features {
  margin: 24px 0 32px;
  display: grid;
  gap: 12px;
  flex-grow: 1;
}

.pricing-features li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.pricing-features li::before {
  content: '›';
  font-family: var(--font-mono);
  color: var(--accent-cyan-bright);
  font-weight: 700;
}

/* ==========================================================================
   CLIENT PROTOCOLS / TESTIMONIALS (ZERO FAKE GOOGLE STARS!)
   ========================================================================== */

.protocols-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.protocol-card {
  padding: 28px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.protocol-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 14px;
  margin-bottom: 18px;
  border-bottom: 1px solid var(--border-grid);
  font-family: var(--font-mono);
  font-size: 0.74rem;
}

.protocol-status {
  color: var(--accent-emerald);
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.3);
  padding: 2px 8px;
}

.protocol-quote {
  font-size: 0.96rem;
  color: var(--text-primary);
  line-height: 1.7;
  margin-bottom: 22px;
  font-style: normal;
}

.protocol-client {
  padding-top: 14px;
  border-top: 1px dashed var(--border-grid);
}

.protocol-client strong {
  display: block;
  font-family: var(--font-display);
  font-size: 0.98rem;
}

.protocol-client span {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* ==========================================================================
   INTERACTIVE ONLINE APPOINTMENT BOOKING
   ========================================================================== */

.booking-container {
  background: var(--bg-graphite);
  border: 1px solid var(--border-metallic);
  padding: 40px;
  border-radius: var(--radius-sm);
}

.booking-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 40px;
}

.slot-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-top: 10px;
}

.slot-btn {
  padding: 10px;
  border: 1px solid var(--border-metallic);
  background: var(--bg-slate);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  text-align: center;
  border-radius: var(--radius-xs);
  transition: all var(--transition-fast);
}

.slot-btn:hover,
.slot-btn.selected {
  background: rgba(14, 165, 233, 0.2);
  border-color: var(--accent-cyan-bright);
  color: #ffffff;
  font-weight: 700;
}

/* ==========================================================================
   FAQ ACCORDION
   ========================================================================== */

.faq-list {
  max-width: 920px;
  margin: 0 auto;
  display: grid;
  gap: 14px;
}

.faq-item {
  background: var(--bg-graphite);
  border: 1px solid var(--border-metallic);
  border-radius: var(--radius-xs);
}

.faq-trigger {
  width: 100%;
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  text-align: left;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--text-primary);
}

.faq-trigger:hover {
  color: var(--accent-cyan-bright);
}

.faq-icon {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  color: var(--accent-cyan);
  transition: transform var(--transition-fast);
}

.faq-item.is-open .faq-icon {
  transform: rotate(45deg);
}

.faq-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.faq-content-inner {
  padding: 0 24px 22px;
  color: var(--text-secondary);
  font-size: 0.95rem;
  border-top: 1px solid var(--border-grid);
  padding-top: 16px;
}

/* ==========================================================================
   CONTACT & GOOGLE MAPS SECTION
   ========================================================================== */

.contact-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 40px;
}

.form-group {
  margin-bottom: 18px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.form-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.form-control {
  width: 100%;
  padding: 13px 16px;
  background: var(--bg-obsidian);
  border: 1px solid var(--border-metallic);
  border-radius: var(--radius-xs);
  color: var(--text-primary);
  transition: border-color var(--transition-fast);
}

.form-control:focus {
  outline: none;
  border-color: var(--accent-cyan-bright);
  box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.15);
}

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

.form-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 24px;
}

.map-frame-box {
  border: 1px solid var(--border-metallic);
  background: var(--bg-graphite);
  padding: 12px;
  border-radius: var(--radius-xs);
  height: 320px;
  margin-top: 24px;
}

.map-frame-box iframe {
  width: 100%;
  height: 100%;
  border: 0;
  filter: invert(90%) hue-rotate(180deg) contrast(95%);
}

.form-feedback {
  margin-top: 16px;
  padding: 14px 18px;
  border-radius: var(--radius-xs);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  display: none;
}

.form-feedback.success {
  display: block;
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid var(--accent-emerald);
  color: #34d399;
}

/* ==========================================================================
   FOOTER & LEGAL SUBPAGES
   ========================================================================== */

.site-footer {
  background: #040609;
  border-top: 1px solid var(--border-metallic);
  padding: 72px 0 36px;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 48px;
  border-bottom: 1px solid var(--border-grid);
}

.footer-heading {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-primary);
  margin-bottom: 18px;
}

.footer-links {
  display: grid;
  gap: 10px;
}

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

.footer-bottom {
  padding-top: 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--text-muted);
}

.page-hero {
  padding: 64px 0;
  background: var(--bg-graphite);
  border-bottom: 1px solid var(--border-metallic);
}

.legal-content {
  max-width: 860px;
  margin: 0 auto;
}

.legal-content h2 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  margin: 32px 0 12px;
  color: var(--text-primary);
}

.legal-content h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  margin: 24px 0 8px;
  color: var(--accent-cyan-bright);
}

.legal-content p,
.legal-content ul {
  color: var(--text-secondary);
  margin-bottom: 16px;
}

/* ==========================================================================
   WHATSAPP FLOATING ACTION BUTTON (EXACT SPECIFICATION)
   ========================================================================== */

.whatsapp-float-btn {
  position: fixed;
  bottom: 25px;
  right: 25px;
  z-index: 9999;
  display: flex;
  align-items: center;
  gap: 8px;
  background: #25D366;
  color: #ffffff;
  padding: 12px 18px;
  border-radius: 50px;
  box-shadow: 0 4px 15px rgba(37,211,102,0.4);
  text-decoration: none;
  font-weight: 600;
  font-family: sans-serif;
  transition: all 0.3s ease;
}

.whatsapp-float-btn:hover {
  transform: scale(1.05);
  background: #20ba5a;
  box-shadow: 0 6px 20px rgba(37,211,102,0.6);
  color: #ffffff;
}

/* ==========================================================================
   RESPONSIVE BREAKPOINTS (TABLET & SMARTPHONE)
   ========================================================================== */

@media (max-width: 1080px) {
  .hero-grid,
  .calculator-wrapper,
  .about-split,
  .booking-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .services-grid,
  .projects-grid,
  .team-grid,
  .pricing-grid,
  .protocols-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .main-nav {
    display: none;
    position: absolute;
    top: 80px;
    left: 0;
    right: 0;
    background: var(--bg-graphite);
    border-bottom: 1px solid var(--border-metallic);
    flex-direction: column;
    align-items: stretch;
    padding: 20px;
    gap: 8px;
  }

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

  .mobile-menu-toggle {
    display: inline-flex;
  }
}

@media (max-width: 640px) {
  .container {
    padding: 0 16px;
  }

  .header-inner {
    gap: 16px;
  }

  .header-actions > .btn {
    display: none;
  }

  .hero-kicker-row {
    flex-wrap: wrap;
  }

  .mono-tag {
    max-width: 100%;
    min-width: 0;
    white-space: normal;
  }

  .calculator-wrapper > *,
  .booking-grid > *,
  .contact-grid > *,
  .about-split > *,
  .hero-grid > *,
  .calc-modules-grid,
  .calc-module-btn,
  .calc-module-top,
  .calc-output-panel,
  .tech-card,
  .form-control,
  .slot-grid,
  .slot-btn {
    min-width: 0;
    max-width: 100%;
  }

  .calc-module-top {
    flex-wrap: wrap;
  }

  .norm-badge {
    max-width: 100%;
    min-width: 0;
    flex-wrap: wrap;
  }

  .norm-desc {
    min-width: 0;
    overflow-wrap: anywhere;
  }

  .calc-readout-grid {
    grid-template-columns: 1fr;
  }

  .calc-readout-box {
    min-width: 0;
  }

  .calc-readout-box span,
  .calc-readout-box strong {
    overflow-wrap: anywhere;
  }

  .service-spec-table {
    table-layout: fixed;
  }

  .service-spec-table td {
    overflow-wrap: anywhere;
  }

  .section-padding {
    padding: 64px 0;
  }

  .section-header {
    grid-template-columns: 1fr;
  }

  .section-meta {
    text-align: left;
  }

  .hero-telemetry-matrix,
  .services-grid,
  .projects-grid,
  .team-grid,
  .pricing-grid,
  .protocols-grid,
  .calc-modules-grid,
  .form-row,
  .slot-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .telemetry-cell {
    border-right: none;
    border-bottom: 1px solid var(--border-grid);
  }

  .calculator-wrapper,
  .booking-container {
    padding: 22px;
  }

  .whatsapp-float-btn {
    width: 56px;
    height: 56px;
    padding: 0;
    justify-content: center;
  }

  .whatsapp-float-text {
    display: none;
  }
}