/* ==========================================================================
   KFP GROUP — ENGINEERING DESIGN SYSTEM (v2.0)
   Aesthetic: High-End Silicon Valley / European Tech Studio
   Inspirations: Linear.app, Stripe, Vercel, Pentagram
   Principles: Zero Cliché Emojis, Hairline Precision, Deep Obsidian & Light Mode,
               Typographic Hierarchy, Real Hardware & Browser Chrome Mockups
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. COLOR TOKENS & SYSTEM THEMES
   -------------------------------------------------------------------------- */
:root {
  /* DARK THEME (Default: Deep Obsidian / Technical Slate) */
  --bg-canvas: #08090B;
  --bg-subtle: #0D0F13;
  --bg-surface: #12141A;
  --bg-surface-elevated: #181B22;
  --bg-surface-hover: #1E222B;
  --bg-glass: rgba(18, 20, 26, 0.78);
  --bg-glass-header: rgba(8, 9, 11, 0.82);
  --bg-input: #0D0F13;

  --border-hairline: rgba(255, 255, 255, 0.07);
  --border-subtle: rgba(255, 255, 255, 0.12);
  --border-card-hover: rgba(59, 130, 246, 0.45);
  --border-focus: #3B82F6;

  --accent-primary: #2563EB;
  --accent-hover: #3B82F6;
  --accent-glow: rgba(37, 99, 235, 0.22);
  --accent-subtle: rgba(37, 99, 235, 0.12);
  --accent-emerald: #10B981;
  --accent-amber: #F59E0B;
  --accent-cyan: #06B6D4;

  --text-primary: #FFFFFF;
  --text-secondary: #94A3B8;
  --text-muted: #64748B;
  --text-code: #38BDF8;

  --inner-highlight: inset 0 1px 0 0 rgba(255, 255, 255, 0.08);
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.35);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.45);
  --shadow-lg: 0 20px 48px rgba(0, 0, 0, 0.65);
  --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.4), inset 0 1px 0 0 rgba(255, 255, 255, 0.06);

  --radius-xs: 6px;
  --radius-sm: 10px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-heading: 'Manrope', 'Inter', -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', Menlo, Consolas, monospace;

  --transition-fast: 0.15s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-smooth: 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

/* LIGHT THEME (Pristine Architectural Off-White) */
html[data-theme="light"] {
  --bg-canvas: #FBFBFC;
  --bg-subtle: #F3F4F6;
  --bg-surface: #FFFFFF;
  --bg-surface-elevated: #F8FAFC;
  --bg-surface-hover: #F1F5F9;
  --bg-glass: rgba(255, 255, 255, 0.84);
  --bg-glass-header: rgba(251, 251, 252, 0.85);
  --bg-input: #F8FAFC;

  --border-hairline: rgba(0, 0, 0, 0.07);
  --border-subtle: rgba(0, 0, 0, 0.12);
  --border-card-hover: rgba(29, 78, 216, 0.35);
  --border-focus: #1D4ED8;

  --accent-primary: #1D4ED8;
  --accent-hover: #2563EB;
  --accent-glow: rgba(29, 78, 216, 0.14);
  --accent-subtle: rgba(29, 78, 216, 0.08);
  --accent-emerald: #059669;
  --accent-amber: #D97706;
  --accent-cyan: #0284C7;

  --text-primary: #0A0D14;
  --text-secondary: #4B5565;
  --text-muted: #8E9BAE;
  --text-code: #0369A1;

  --inner-highlight: inset 0 1px 0 0 rgba(255, 255, 255, 0.9);
  --shadow-sm: 0 1px 2px rgba(10, 13, 20, 0.03);
  --shadow-md: 0 6px 18px rgba(10, 13, 20, 0.05);
  --shadow-lg: 0 16px 36px rgba(10, 13, 20, 0.07);
  --shadow-card: 0 1px 3px rgba(10, 13, 20, 0.04), 0 8px 24px rgba(10, 13, 20, 0.03);
}

/* --------------------------------------------------------------------------
   2. RESET & FOUNDATIONS
   -------------------------------------------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-family: var(--font-sans);
  background-color: var(--bg-canvas);
  color: var(--text-primary);
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  background-color: var(--bg-canvas);
  color: var(--text-primary);
  line-height: 1.6;
  position: relative;
}

/* Precision Background Dot Grid */
.ambient-grid {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 900px;
  background-image: radial-gradient(rgba(255, 255, 255, 0.08) 1px, transparent 1px);
  background-size: 24px 24px;
  mask-image: radial-gradient(ellipse 65% 55% at 50% 0%, #000 30%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 65% 55% at 50% 0%, #000 30%, transparent 100%);
  pointer-events: none;
  z-index: 0;
}

html[data-theme="light"] .ambient-grid {
  background-image: radial-gradient(rgba(0, 0, 0, 0.05) 1px, transparent 1px);
}

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

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

button, input, textarea, select {
  font: inherit;
  color: inherit;
  border: none;
  background: none;
  outline: none;
}

button {
  cursor: pointer;
}

.container {
  width: 100%;
  max-width: 1220px;
  margin: 0 auto;
  padding: 0 28px;
  position: relative;
  z-index: 1;
}

/* --------------------------------------------------------------------------
   3. REFINED TYPOGRAPHY & TAGS
   -------------------------------------------------------------------------- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-primary);
  letter-spacing: -0.03em;
}

.mono-tag, .mono-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 12px;
  border-radius: var(--radius-full);
  background: var(--bg-surface);
  border: 1px solid var(--border-hairline);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-weight: 600;
  box-shadow: var(--shadow-sm);
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-emerald);
  box-shadow: 0 0 8px var(--accent-emerald);
  animation: pulseLight 2s infinite ease-in-out;
}

@keyframes pulseLight {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.45; transform: scale(0.85); }
}

.section-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent-primary);
  font-weight: 700;
  margin-bottom: 12px;
}

.section-heading-group {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 56px auto;
}

.section-heading-group h2 {
  font-size: clamp(2rem, 3.2vw, 2.75rem);
  margin-bottom: 14px;
}

.section-heading-group p {
  color: var(--text-secondary);
  font-size: 1.05rem;
  line-height: 1.6;
}

/* --------------------------------------------------------------------------
   4. BUTTONS & ACTIONS
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.9rem;
  letter-spacing: -0.01em;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--accent-primary);
  color: #FFFFFF;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.2), 0 2px 6px rgba(0, 0, 0, 0.2);
}

.btn-primary:hover {
  background-color: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.2), 0 4px 12px var(--accent-glow);
}

.btn-secondary {
  background: var(--bg-surface);
  color: var(--text-primary);
  border: 1px solid var(--border-hairline);
  box-shadow: var(--shadow-sm), var(--inner-highlight);
}

.btn-secondary:hover {
  background: var(--bg-surface-elevated);
  border-color: var(--border-subtle);
  transform: translateY(-1px);
}

.btn-lg {
  padding: 13px 26px;
  font-size: 0.98rem;
  border-radius: var(--radius-sm);
}

.btn-sm {
  padding: 6px 14px;
  font-size: 0.8rem;
}

/* --------------------------------------------------------------------------
   5. HEADER & NAVIGATION BAR
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg-glass-header);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-hairline);
  transition: background var(--transition-smooth), border-color var(--transition-smooth);
}

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

/* Geometric Logo Mark */
.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.03em;
}

.brand-monogram {
  width: 32px;
  height: 32px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xs);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--inner-highlight);
  color: var(--text-primary);
}

.brand-text {
  display: flex;
  align-items: baseline;
  gap: 6px;
}

.brand-title {
  color: var(--text-primary);
  font-weight: 800;
}

.brand-label {
  color: var(--text-muted);
  font-size: 0.72rem;
  font-family: var(--font-mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

.nav-link {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

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

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

/* Theme Toggle Button */
.theme-toggle-btn {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-xs);
  border: 1px solid var(--border-hairline);
  background: var(--bg-surface);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
  box-shadow: var(--inner-highlight);
}

.theme-toggle-btn:hover {
  color: var(--text-primary);
  border-color: var(--border-subtle);
  background: var(--bg-surface-elevated);
}

.theme-icon-sun, .theme-icon-moon {
  width: 17px;
  height: 17px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

html[data-theme="dark"] .theme-icon-sun { display: block; }
html[data-theme="dark"] .theme-icon-moon { display: none; }
html[data-theme="light"] .theme-icon-sun { display: none; }
html[data-theme="light"] .theme-icon-moon { display: block; }

/* Language Switcher */
.lang-switcher {
  display: inline-flex;
  align-items: center;
  background: var(--bg-surface);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-xs);
  padding: 2px;
  gap: 2px;
  box-shadow: var(--inner-highlight);
}

.lang-btn {
  padding: 4px 8px;
  font-size: 0.72rem;
  font-family: var(--font-mono);
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  border-radius: 4px;
  transition: all var(--transition-fast);
  cursor: pointer;
  line-height: 1;
}

.lang-btn:hover {
  color: var(--text-primary);
}

.lang-btn.active {
  background: var(--bg-surface-elevated);
  color: var(--accent-blue);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}

.mobile-menu-toggle {
  display: none;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-xs);
  border: 1px solid var(--border-hairline);
  background: var(--bg-surface);
  align-items: center;
  justify-content: center;
  color: var(--text-primary);
}

/* --------------------------------------------------------------------------
   6. HERO SECTION
   -------------------------------------------------------------------------- */
.hero-section {
  padding: 80px 0 60px 0;
  position: relative;
}

.hero-content {
  text-align: center;
  max-width: 900px;
  margin: 0 auto;
}

.hero-meta-bar {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 14px;
  background: var(--bg-surface);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-full);
  margin-bottom: 28px;
  box-shadow: var(--shadow-sm), var(--inner-highlight);
}

.hero-meta-text {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
}

.hero-title {
  font-size: clamp(2.4rem, 4.8vw, 3.8rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.1;
  margin-bottom: 22px;
}

.hero-subtitle {
  font-size: clamp(1.05rem, 1.8vw, 1.22rem);
  color: var(--text-secondary);
  line-height: 1.6;
  max-width: 780px;
  margin: 0 auto 36px auto;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 56px;
}

/* Key Metrics Strip */
.hero-metrics-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  max-width: 960px;
  margin: 0 auto 48px auto;
}

.hero-metric-item,
.hero-stat-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-md);
  padding: 24px;
  text-align: left;
  box-shadow: var(--shadow-card);
  transition: border-color var(--transition-fast), transform var(--transition-fast);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.hero-metric-item:hover,
.hero-stat-card:hover {
  border-color: var(--border-subtle);
  transform: translateY(-2px);
}

.metric-val,
.hero-stat-val {
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.15;
  margin-bottom: 6px;
  letter-spacing: -0.02em;
}

.metric-lbl,
.hero-stat-label {
  font-size: 0.86rem;
  color: var(--text-secondary);
  line-height: 1.45;
}

/* Interactive Hardware/Live Architecture Terminal & Widget */
.hero-widget-frame,
.architecture-terminal {
  background: var(--bg-surface);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg), var(--inner-highlight);
  max-width: 960px;
  margin: 0 auto;
  overflow: hidden;
  text-align: left;
}

.widget-header,
.terminal-header {
  padding: 12px 18px;
  background: var(--bg-subtle);
  border-bottom: 1px solid var(--border-hairline);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.widget-controls,
.terminal-controls {
  display: flex;
  align-items: center;
  gap: 7px;
}

.widget-controls span,
.terminal-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.15);
}

html[data-theme="light"] .widget-controls span,
html[data-theme="light"] .terminal-dot {
  background: rgba(0, 0, 0, 0.15);
}

.widget-title,
.terminal-title {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  letter-spacing: 0.08em;
  font-weight: 700;
  text-transform: uppercase;
}

.widget-status {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--accent-emerald);
  font-weight: 600;
}

.widget-pulse {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-emerald);
  box-shadow: 0 0 8px var(--accent-emerald);
  animation: pulseLight 1.5s infinite;
}

.widget-body,
.terminal-body {
  padding: 22px 24px;
  display: flex;
  flex-direction: column;
  gap: 18px;
  background: var(--bg-surface);
}

.pipeline-diagram {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr;
  align-items: center;
  gap: 12px;
  background: var(--bg-subtle);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-sm);
  padding: 14px 18px;
}

.pipe-node {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-xs);
  padding: 10px 14px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  transition: all var(--transition-fast);
}

.pipe-node.active {
  border-color: rgba(37, 99, 235, 0.5);
  box-shadow: 0 0 14px rgba(37, 99, 235, 0.15);
}

.node-tag {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--accent-hover);
}

.node-name {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
}

.pipe-arrow {
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 1.1rem;
  text-align: center;
}

.terminal-log-stream {
  background: #050608;
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-xs);
  padding: 14px 18px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  line-height: 1.7;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

html[data-theme="light"] .terminal-log-stream {
  background: #F1F5F9;
}

.log-line {
  display: flex;
  align-items: baseline;
  gap: 10px;
  flex-wrap: wrap;
  color: var(--text-secondary);
}

.log-time {
  color: var(--text-muted);
  font-size: 0.72rem;
}

.log-tag {
  color: var(--accent-hover);
  font-weight: 700;
  font-size: 0.72rem;
}

/* --------------------------------------------------------------------------
   7. BENTO GRID ARCHITECTURE (SERVICES)
   -------------------------------------------------------------------------- */
.services-section {
  padding: 90px 0;
}

.bento-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.bento-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-lg);
  padding: 32px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--shadow-card);
  transition: border-color var(--transition-fast), transform var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.bento-card:hover {
  border-color: var(--border-subtle);
  transform: translateY(-2px);
}

.bento-span-2 {
  grid-column: span 2;
}

.bento-top-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 22px;
}

.bento-icon-box {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-xs);
  background: var(--bg-subtle);
  border: 1px solid var(--border-hairline);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-primary);
  box-shadow: var(--inner-highlight);
}

.bento-index {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 0.1em;
}

.bento-card-title {
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 10px;
  line-height: 1.25;
}

.bento-card-desc {
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.6;
  margin-bottom: 24px;
}

/* Pipeline Flow Simulator */
.pipeline-flow {
  background: var(--bg-subtle);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-sm);
  padding: 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-top: auto;
}

.pipeline-step {
  background: var(--bg-surface);
  border: 1px solid var(--border-hairline);
  padding: 6px 12px;
  border-radius: var(--radius-xs);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--text-primary);
  font-weight: 600;
  white-space: nowrap;
}

.pipeline-arrow {
  color: var(--text-muted);
  font-size: 0.8rem;
}

/* Process Cycle Timeline in Bento */
.metric-highlight-bar {
  background: var(--bg-subtle);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-sm);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: auto;
}

.bar-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.82rem;
}

.bar-label {
  color: var(--text-secondary);
}

.bar-val {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--accent-emerald);
}

/* JSON Document Preview in Bento */
.json-preview-box {
  background: var(--bg-subtle);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-xs);
  padding: 12px 14px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  line-height: 1.5;
  color: var(--text-secondary);
  margin-top: auto;
}

.json-key { color: var(--accent-cyan); }
.json-val { color: var(--accent-emerald); }

/* Spotlight Mock in Second Brain Bento */
.spotlight-mock {
  background: var(--bg-subtle);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-secondary);
  margin-top: auto;
}

.kbd-pill {
  padding: 2px 6px;
  border-radius: 4px;
  background: var(--bg-surface);
  border: 1px solid var(--border-hairline);
  font-size: 0.68rem;
  color: var(--text-muted);
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}

.clean-tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  padding: 3px 8px;
  background: var(--bg-subtle);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-xs);
  color: var(--text-secondary);
}

/* --------------------------------------------------------------------------
   8. TARGET AUDIENCE ("ДЛЯ КОГО")
   -------------------------------------------------------------------------- */
.audience-section {
  padding: 80px 0;
  background: var(--bg-subtle);
  border-top: 1px solid var(--border-hairline);
  border-bottom: 1px solid var(--border-hairline);
}

.audience-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.audience-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-md);
  padding: 26px 22px;
  box-shadow: var(--shadow-card);
  transition: border-color var(--transition-fast), transform var(--transition-fast);
}

.audience-card:hover {
  border-color: var(--border-subtle);
  transform: translateY(-2px);
}

.audience-num {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--text-muted);
  letter-spacing: 0.08em;
  margin-bottom: 12px;
}

.audience-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.audience-desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* --------------------------------------------------------------------------
   9. PROCESS ROADMAP ("ЭТАПЫ РАБОТЫ")
   -------------------------------------------------------------------------- */
.process-section {
  padding: 90px 0;
}

.process-timeline {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
}

.process-step {
  background: var(--bg-surface);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-md);
  padding: 24px 20px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--shadow-card);
  transition: all var(--transition-fast);
}

.process-step:hover {
  border-color: var(--border-subtle);
  transform: translateY(-2px);
}

.process-step-num {
  font-family: var(--font-mono);
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.process-step-title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.process-step-desc {
  font-size: 0.84rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 16px;
}

.process-step-sla {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--accent-primary);
  font-weight: 600;
  letter-spacing: 0.04em;
}

/* --------------------------------------------------------------------------
   10. INTERACTIVE ROI CALCULATOR
   -------------------------------------------------------------------------- */
.calc-section {
  padding: 80px 0;
}

.calculator-card,
.calc-box {
  background: var(--bg-surface);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-xl);
  padding: 44px;
  box-shadow: var(--shadow-lg), var(--inner-highlight);
}

.calc-layout {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 48px;
  align-items: start;
}

.calc-controls,
.calc-sliders {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.calc-group,
.calc-control-group {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.calc-label-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.calc-label {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-primary);
}

.calc-val-badge,
.calc-val-display {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--accent-hover);
  background: var(--accent-subtle);
  padding: 4px 10px;
  border-radius: var(--radius-xs);
  border: 1px solid var(--border-hairline);
}

.calc-range {
  -webkit-appearance: none;
  width: 100%;
  height: 6px;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-hairline);
  border-radius: 4px;
  outline: none;
}

.calc-range::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--accent-primary);
  cursor: pointer;
  box-shadow: 0 0 10px var(--accent-glow);
  transition: transform var(--transition-fast);
}

.calc-range::-webkit-slider-thumb:hover {
  transform: scale(1.18);
}

.calc-results-panel,
.calc-results {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-md);
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.calc-result-metric {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-hairline);
}

.calc-result-metric:last-of-type {
  border-bottom: none;
  padding-bottom: 0;
}

.calc-result-lbl {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 500;
}

.calc-result-number {
  font-size: 2.2rem;
  font-weight: 800;
  font-family: var(--font-mono);
  color: var(--text-primary);
  line-height: 1.15;
  letter-spacing: -0.03em;
}

.calc-result-number.accent-green {
  color: var(--accent-emerald);
}

/* --------------------------------------------------------------------------
   11. REAL CASE STUDIES & BROWSER MOCKUPS
   -------------------------------------------------------------------------- */
.cases-section {
  padding: 90px 0;
  background: var(--bg-subtle);
  border-top: 1px solid var(--border-hairline);
  border-bottom: 1px solid var(--border-hairline);
}

.cases-filter-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 7px 16px;
  border-radius: var(--radius-full);
  font-size: 0.82rem;
  font-weight: 600;
  font-family: var(--font-mono);
  color: var(--text-secondary);
  border: 1px solid var(--border-hairline);
  background: var(--bg-surface);
  transition: all var(--transition-fast);
}

.filter-btn:hover {
  color: var(--text-primary);
  border-color: var(--border-subtle);
}

.filter-btn.active {
  background: var(--text-primary);
  color: var(--bg-canvas);
  border-color: var(--text-primary);
}

.cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.case-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--shadow-card);
  transition: all var(--transition-fast);
  height: 100%;
  overflow: hidden;
  position: relative;
}

.case-card:hover {
  transform: translateY(-3px);
  border-color: var(--border-subtle);
  box-shadow: var(--shadow-md);
}

/* High-End Browser / Viewport Frame */
.case-mockup-browser,
.browser-frame {
  width: 100%;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-hairline);
  overflow: hidden;
  background: var(--bg-subtle);
  margin-bottom: 20px;
}

.browser-header {
  padding: 8px 12px;
  background: var(--bg-surface-elevated);
  border-bottom: 1px solid var(--border-hairline);
  display: flex;
  align-items: center;
  gap: 8px;
}

.browser-dots {
  display: flex;
  align-items: center;
  gap: 5px;
}

.browser-dots i,
.browser-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
}

html[data-theme="light"] .browser-dots i,
html[data-theme="light"] .browser-dot {
  background: rgba(0, 0, 0, 0.2);
}

.browser-url,
.browser-url-pill {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
  letter-spacing: 0.03em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.browser-viewport,
.case-card-img-wrapper {
  position: relative;
  width: 100%;
  height: 190px;
  overflow: hidden;
  background: #000;
}

.case-card-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  transition: transform 0.4s ease;
}

.case-card:hover .case-card-img {
  transform: scale(1.04);
}

.case-content {
  display: flex;
  flex-direction: column;
  flex: 1;
}

.case-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
  gap: 10px;
  flex-wrap: wrap;
}

.case-tags-mini {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.case-badge {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--accent-hover);
  background: var(--accent-subtle);
  padding: 3px 8px;
  border-radius: 4px;
  display: inline-block;
  margin-bottom: 10px;
}

.case-title {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 10px;
  color: var(--text-primary);
}

.case-desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 20px;
  flex: 1;
}

.case-metrics-strip,
.case-metrics-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  padding: 14px 0;
  border-top: 1px solid var(--border-hairline);
  border-bottom: 1px solid var(--border-hairline);
  margin-bottom: 18px;
}

.case-stat,
.case-metric-item {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.case-stat-val,
.case-metric-val {
  font-family: var(--font-mono);
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.2;
}

.case-stat-lbl,
.case-metric-lbl {
  font-size: 0.72rem;
  color: var(--text-muted);
  line-height: 1.35;
}

.case-actions {
  margin-top: auto;
}

/* --------------------------------------------------------------------------
   12. DIRECT CONTACT SECTION
   -------------------------------------------------------------------------- */
.contact-section {
  padding: 90px 0;
}

.contact-box {
  background: var(--bg-surface);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-xl);
  padding: 48px;
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 56px;
  box-shadow: var(--shadow-lg), var(--inner-highlight);
}

.contact-info-col h2 {
  font-size: 2.2rem;
  margin-bottom: 14px;
}

.contact-info-col p {
  color: var(--text-secondary);
  font-size: 1rem;
  margin-bottom: 32px;
}

.direct-channels {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 28px;
}

.channel-btn {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 13px 18px;
  background: var(--bg-subtle);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.9rem;
  transition: all var(--transition-fast);
}

.channel-btn:hover {
  background: var(--bg-surface-elevated);
  border-color: var(--border-subtle);
  color: var(--accent-primary);
}

.channel-icon {
  width: 22px;
  height: 22px;
  flex-shrink: 0;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-label {
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--text-primary);
}

.form-input, .form-textarea, .form-select {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-input);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-xs);
  color: var(--text-primary);
  font-size: 0.92rem;
  transition: border-color var(--transition-fast);
}

.form-input:focus, .form-textarea:focus, .form-select:focus {
  border-color: var(--border-focus);
}

.form-textarea {
  min-height: 100px;
  resize: vertical;
}

.form-status-msg {
  padding: 12px 16px;
  border-radius: var(--radius-xs);
  font-size: 0.88rem;
  display: none;
}

.form-status-msg.success {
  display: block;
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.25);
  color: var(--accent-emerald);
}

/* --------------------------------------------------------------------------
   13. FOOTER
   -------------------------------------------------------------------------- */
.site-footer {
  background: var(--bg-subtle);
  border-top: 1px solid var(--border-hairline);
  padding: 56px 0 28px 0;
  margin-top: auto;
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: 40px;
  margin-bottom: 44px;
}

.footer-brand p {
  color: var(--text-secondary);
  font-size: 0.88rem;
  margin-top: 12px;
  max-width: 320px;
}

.footer-col-title {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 16px;
  color: var(--text-primary);
}

.footer-nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-nav-list a {
  color: var(--text-secondary);
  font-size: 0.88rem;
}

.footer-nav-list a:hover {
  color: var(--text-primary);
}

.footer-bottom {
  border-top: 1px solid var(--border-hairline);
  padding-top: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.82rem;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 16px;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-surface);
  border: 1px solid var(--border-hairline);
  padding: 4px 10px;
  border-radius: var(--radius-full);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 0.74rem;
}

/* --------------------------------------------------------------------------
   14. SLEEK COMMAND COPILOT (AI ASSISTANT)
   -------------------------------------------------------------------------- */
.ai-widget-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 999;
}

/* Pill Trigger */
.ai-trigger-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 16px;
  background: var(--bg-surface-elevated);
  color: var(--text-primary);
  border-radius: var(--radius-full);
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-md), var(--inner-highlight);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.ai-trigger-btn:hover {
  transform: translateY(-2px);
  border-color: var(--accent-primary);
}

.ai-trigger-icon-box {
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-primary);
}

.ai-trigger-text {
  font-weight: 600;
  font-size: 0.86rem;
  letter-spacing: -0.01em;
}

.ai-trigger-shortcut {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  background: var(--bg-subtle);
  padding: 2px 6px;
  border-radius: 4px;
  border: 1px solid var(--border-hairline);
}

/* Copilot Window */
.ai-chat-drawer {
  position: fixed;
  bottom: 76px;
  right: 24px;
  width: 420px;
  max-width: calc(100vw - 32px);
  height: 580px;
  max-height: calc(100vh - 100px);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg), var(--inner-highlight);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  opacity: 0;
  transform: translateY(16px) scale(0.98);
  pointer-events: none;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  z-index: 1000;
}

.ai-chat-drawer.open {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}

.ai-chat-header {
  padding: 14px 18px;
  background: var(--bg-subtle);
  border-bottom: 1px solid var(--border-hairline);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.ai-header-name {
  font-weight: 700;
  font-size: 0.88rem;
  letter-spacing: -0.01em;
}

.ai-header-status {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--accent-emerald);
  display: flex;
  align-items: center;
  gap: 6px;
}

.ai-icon-btn {
  width: 28px;
  height: 28px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.ai-icon-btn:hover {
  background: var(--bg-surface);
  color: var(--text-primary);
}

.ai-chat-body {
  flex: 1;
  padding: 18px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.ai-msg {
  display: flex;
  flex-direction: column;
  max-width: 90%;
  gap: 4px;
}

.ai-msg.bot { align-self: flex-start; }
.ai-msg.user { align-self: flex-end; }

.ai-msg-bubble {
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  line-height: 1.5;
}

.ai-msg.bot .ai-msg-bubble {
  background: var(--bg-subtle);
  color: var(--text-primary);
  border: 1px solid var(--border-hairline);
}

.ai-msg.user .ai-msg-bubble {
  background: var(--accent-primary);
  color: #FFFFFF;
}

.ai-msg-time {
  font-size: 0.68rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.ai-quick-options {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: 10px;
}

.ai-chip-btn {
  text-align: left;
  padding: 8px 12px;
  border-radius: var(--radius-xs);
  background: var(--bg-surface);
  border: 1px solid var(--border-hairline);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: all var(--transition-fast);
}

.ai-chip-btn:hover {
  border-color: var(--accent-primary);
  color: var(--accent-primary);
  transform: translateX(3px);
}

.ai-lead-box {
  background: var(--bg-surface);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-xs);
  padding: 12px;
  margin-top: 10px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.ai-lead-input {
  background: var(--bg-input);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-xs);
  padding: 9px 12px;
  font-size: 0.85rem;
  color: var(--text-primary);
}

.ai-lead-submit {
  padding: 9px;
  background: var(--accent-primary);
  color: #FFFFFF;
  border-radius: var(--radius-xs);
  font-size: 0.85rem;
  font-weight: 600;
  transition: background var(--transition-fast);
}

.ai-typing-indicator {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 10px 14px;
  background: var(--bg-subtle);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-sm);
  width: fit-content;
}

.ai-typing-dot {
  width: 5px;
  height: 5px;
  background: var(--text-muted);
  border-radius: 50%;
  animation: bounceDot 1.4s infinite ease-in-out;
}

.ai-typing-dot:nth-child(1) { animation-delay: -0.32s; }
.ai-typing-dot:nth-child(2) { animation-delay: -0.16s; }

@keyframes bounceDot {
  0%, 80%, 100% { transform: scale(0.6); opacity: 0.4; }
  40% { transform: scale(1); opacity: 1; }
}

.ai-chat-footer {
  padding: 12px 16px;
  background: var(--bg-subtle);
  border-top: 1px solid var(--border-hairline);
  display: flex;
  align-items: center;
  gap: 8px;
}

.ai-chat-input {
  flex: 1;
  background: var(--bg-input);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-full);
  padding: 9px 16px;
  font-size: 0.88rem;
  color: var(--text-primary);
}

.ai-chat-send-btn {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--accent-primary);
  color: #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all var(--transition-fast);
}

/* --------------------------------------------------------------------------
   15. MODAL WINDOWS
   -------------------------------------------------------------------------- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}

.modal-overlay.open,
.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-dialog {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 580px;
  max-height: 90vh;
  overflow-y: auto;
  padding: 36px;
  box-shadow: var(--shadow-lg), var(--inner-highlight);
  transform: translateY(16px) scale(0.98);
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
}

.modal-dialog-lg {
  max-width: 840px;
}

.modal-overlay.open .modal-dialog,
.modal-overlay.active .modal-dialog {
  transform: translateY(0) scale(1);
}

/* Deep-dive Case Modal Details */
.modal-case-header {
  margin-bottom: 20px;
  padding-right: 40px;
}

.modal-case-img-box {
  width: 100%;
  max-height: 380px;
  overflow: hidden;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-hairline);
  margin-bottom: 24px;
}

.modal-case-img-box img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
}

.modal-case-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 20px;
}

.modal-case-block {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-xs);
  padding: 20px;
}

.modal-block-lbl {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-hover);
  margin-bottom: 8px;
}

.modal-block-text {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.modal-metrics-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 10px;
}

.modal-metric-card {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-xs);
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.modal-metric-val {
  font-family: var(--font-mono);
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--text-primary);
}

.modal-metric-lbl {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.modal-close-btn {
  position: absolute;
  top: 18px;
  right: 18px;
  width: 32px;
  height: 32px;
  border-radius: 6px;
  background: var(--bg-subtle);
  border: 1px solid var(--border-hairline);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  font-size: 1.1rem;
  transition: all var(--transition-fast);
}

.modal-close-btn:hover {
  color: var(--text-primary);
}

/* --------------------------------------------------------------------------
   16. RESPONSIVE BREAKPOINTS (Mobile, Tablet, Desktop)
   -------------------------------------------------------------------------- */

/* General utility */
.w-full {
  width: 100% !important;
}

/* Mobile Nav Drawer base styles */
.mobile-nav-drawer {
  position: fixed;
  top: 68px;
  left: 0;
  width: 100%;
  max-height: calc(100vh - 68px);
  overflow-y: auto;
  background: var(--bg-glass-header);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-bottom: 1px solid var(--border-hairline);
  padding: 20px 24px 28px 24px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  transform: translateY(-100%);
  opacity: 0;
  pointer-events: none;
  transition: transform 0.28s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.25s ease;
  z-index: 99;
  box-shadow: var(--shadow-lg);
}

.mobile-nav-drawer.open {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}

.mobile-nav-item {
  font-size: 1.05rem;
  font-weight: 600;
  padding: 12px 0;
  border-bottom: 1px solid var(--border-hairline);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: color var(--transition-fast);
  text-decoration: none;
}

.mobile-nav-item:hover,
.mobile-nav-item.active {
  color: var(--text-primary);
}

.mobile-drawer-actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--border-hairline);
}

.mobile-drawer-actions .btn {
  width: 100%;
  justify-content: center;
  padding: 12px 20px;
}

/* Tablet & Smaller Desktops (< 1024px) */
@media (max-width: 1024px) {
  .bento-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .bento-span-2 {
    grid-column: span 1;
  }
  .audience-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .process-timeline {
    grid-template-columns: repeat(2, 1fr);
  }
  .cases-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-top {
    grid-template-columns: repeat(2, 1fr);
    gap: 36px;
  }
  .about-stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .team-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .tech-matrix {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Tablet Transition (< 960px) - clean header without link crowding */
@media (max-width: 960px) {
  .site-header .nav-links {
    display: none !important;
  }
  .site-header .nav-actions .btn {
    display: none !important;
  }
  .mobile-menu-toggle {
    display: flex !important;
  }
  .pipeline-diagram {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .pipe-arrow {
    transform: rotate(90deg);
    margin: 6px auto;
  }
  .calc-layout {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  .contact-box {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  .modal-case-grid {
    grid-template-columns: 1fr;
  }
  .modal-metrics-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .comparison-table-wrapper {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }
}

/* Tablets Portrait & Large Mobile (< 768px) */
@media (max-width: 768px) {
  .container {
    padding: 0 18px;
  }
  .section-title {
    font-size: clamp(1.8rem, 5vw, 2.4rem);
    line-height: 1.2;
  }
  .section-subtitle {
    font-size: 0.95rem;
    margin-bottom: 32px;
  }
  .bento-grid {
    grid-template-columns: 1fr;
  }
  .bento-card {
    padding: 24px 20px;
  }
  .audience-grid {
    grid-template-columns: 1fr;
  }
  .process-timeline {
    grid-template-columns: 1fr;
  }
  .cases-grid {
    grid-template-columns: 1fr;
  }
  .calc-box {
    padding: 28px 20px;
  }
  .contact-box {
    padding: 28px 20px;
  }
  .footer-top {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
  }
  .about-stats-grid {
    grid-template-columns: 1fr;
  }
  .team-grid {
    grid-template-columns: 1fr;
  }
  .tech-matrix {
    grid-template-columns: 1fr;
  }
  .timeline-item {
    flex-direction: column;
    gap: 8px;
  }
  .services-detail-card {
    padding: 24px 20px;
  }
}

/* Mobile Handhelds (< 640px) */
@media (max-width: 640px) {
  .container {
    padding: 0 16px;
  }
  .hero-section {
    padding: 44px 0 32px 0;
  }
  .hero-title {
    font-size: clamp(1.75rem, 7vw, 2.25rem);
    line-height: 1.15;
    letter-spacing: -0.03em;
  }
  .hero-subtitle {
    font-size: 0.95rem;
    line-height: 1.55;
    margin-bottom: 24px;
  }
  .hero-cta-group {
    flex-direction: column;
    width: 100%;
    gap: 12px;
  }
  .hero-cta-group .btn {
    width: 100%;
    justify-content: center;
  }
  .hero-metrics-strip {
    grid-template-columns: 1fr;
    gap: 10px;
    margin-top: 36px;
  }
  .hero-metric-item {
    padding: 16px 18px;
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    text-align: left;
  }
  .hero-metric-item .metric-number {
    font-size: 1.7rem;
    margin-bottom: 0;
  }
  .terminal-window {
    margin-top: 24px;
    border-radius: var(--radius-sm);
  }
  .terminal-bar {
    padding: 10px 14px;
    font-size: 0.72rem;
  }
  .terminal-log-stream {
    font-size: 0.72rem;
    padding: 14px;
    line-height: 1.55;
    max-height: 220px;
  }
  .case-metrics-strip,
  .case-metrics-row {
    grid-template-columns: 1fr;
    gap: 10px;
  }
  .case-preview-frame {
    height: 160px;
  }
  .case-card {
    padding: 20px 16px;
  }
  .calc-box {
    padding: 22px 16px;
  }
  .calc-results-panel,
  .calc-results {
    padding: 20px 16px;
  }
  .calc-result-number {
    font-size: 1.9rem;
  }
  .contact-box {
    padding: 22px 16px;
  }
  .channel-btn {
    padding: 12px 14px;
    font-size: 0.9rem;
  }
  .modal-dialog {
    width: calc(100vw - 20px);
    max-width: calc(100vw - 20px);
    padding: 22px 16px;
    margin: 10px;
    border-radius: var(--radius-md);
  }
  .modal-metrics-grid {
    grid-template-columns: 1fr;
  }
  
  /* Full-screen bottom sheet feel for Copilot on mobile */
  .ai-widget-container {
    bottom: 16px;
    right: 16px;
  }
  .ai-trigger-shortcut {
    display: none;
  }
  .ai-chat-drawer {
    position: fixed;
    top: auto;
    bottom: 8px;
    left: 8px;
    right: 8px;
    width: calc(100vw - 16px);
    max-width: calc(100vw - 16px);
    height: calc(100dvh - 16px);
    max-height: calc(100dvh - 16px);
    border-radius: var(--radius-md);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4);
  }
}

/* Small Handhelds & Foldables (< 380px) */
@media (max-width: 380px) {
  .site-header .brand-label {
    display: none;
  }
  .site-header .brand-title {
    font-size: 0.92rem;
  }
  .brand-logo {
    gap: 6px;
  }
  .brand-monogram {
    width: 28px;
    height: 28px;
  }
  .site-header .nav-actions {
    gap: 6px;
  }
  .lang-btn {
    padding: 3px 6px;
    font-size: 0.68rem;
  }
  .theme-toggle-btn {
    width: 32px;
    height: 32px;
  }
  .mobile-menu-toggle {
    width: 32px;
    height: 32px;
  }
  .calc-result-number {
    font-size: 1.65rem;
  }
}