/* ============================================
   ORCHESTRAI - Design System & Styles
   ============================================ */

/* --- CSS Variables / Design Tokens --- */
:root {
  /* Colors - Dark Theme */
  --color-bg-primary: #0a0f1a;
  --color-bg-secondary: #0f1629;
  --color-bg-surface: #141c2e;
  --color-bg-card: #1a2340;
  --color-bg-card-hover: #1f2b4d;
  --color-bg-elevated: #243056;

  --color-border: #2a3550;
  --color-border-light: #334155;

  /* Accent Colors */
  --color-primary: #818cf8;
  --color-primary-bright: #6366f1;
  --color-primary-dark: #4f46e5;
  --color-secondary: #22d3ee;
  --color-secondary-dark: #06b6d4;
  --color-accent-warm: #f59e0b;
  --color-accent-green: #34d399;
  --color-accent-rose: #fb7185;

  /* Text */
  --color-text-primary: #f1f5f9;
  --color-text-secondary: #94a3b8;
  --color-text-tertiary: #64748b;
  --color-text-accent: #818cf8;

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #6366f1 0%, #22d3ee 100%);
  --gradient-hero: linear-gradient(135deg, #6366f1 0%, #818cf8 50%, #22d3ee 100%);
  --gradient-warm: linear-gradient(135deg, #f59e0b 0%, #fb7185 100%);
  --gradient-surface: linear-gradient(180deg, #0f1629 0%, #0a0f1a 100%);
  --gradient-card: linear-gradient(145deg, rgba(99, 102, 241, 0.08) 0%, rgba(34, 211, 238, 0.04) 100%);

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;
  --space-5xl: 8rem;

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 2rem;
  --text-4xl: 2.5rem;
  --text-5xl: 3.5rem;
  --text-6xl: 4.5rem;

  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -2px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -4px rgba(0, 0, 0, 0.2);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.3), 0 8px 10px -6px rgba(0, 0, 0, 0.2);
  --shadow-glow: 0 0 40px rgba(99, 102, 241, 0.15);
  --shadow-glow-cyan: 0 0 40px rgba(34, 211, 238, 0.15);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;

  /* Layout */
  --max-width: 1200px;
  --max-width-narrow: 800px;
  --header-height: 72px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg-primary);
  color: var(--color-text-primary);
  line-height: 1.6;
  font-size: var(--text-base);
  overflow-x: hidden;
}

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

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

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

ul, ol {
  list-style: none;
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--color-text-primary);
}

h1 { font-size: clamp(var(--text-4xl), 5vw, var(--text-6xl)); }
h2 { font-size: clamp(var(--text-3xl), 4vw, var(--text-4xl)); }
h3 { font-size: clamp(var(--text-xl), 2.5vw, var(--text-2xl)); }
h4 { font-size: var(--text-lg); }

p {
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.text-gradient {
  background: var(--gradient-hero);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.text-gradient-warm {
  background: var(--gradient-warm);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.text-accent { color: var(--color-primary); }
.text-secondary-accent { color: var(--color-secondary); }

/* --- Layout --- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

.container--narrow {
  max-width: var(--max-width-narrow);
}

.section {
  padding: var(--space-5xl) 0;
  position: relative;
}

.section--alt {
  background-color: var(--color-bg-secondary);
}

.section__header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto var(--space-4xl);
}

.section__label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-md);
}

.section__label::before {
  content: '';
  width: 8px;
  height: 8px;
  background: var(--color-primary);
  border-radius: 50%;
}

.section__title {
  margin-bottom: var(--space-lg);
}

.section__subtitle {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* --- Header --- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: var(--space-md) 0;
  transition: all var(--transition-base);
  background: rgba(10, 15, 26, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid transparent;
}

.header--scrolled {
  background: rgba(10, 15, 26, 0.95);
  border-bottom-color: var(--color-border);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: var(--text-xl);
  font-weight: 800;
  color: var(--color-text-primary);
  letter-spacing: -0.03em;
}

.logo span {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.logo-icon {
  width: 32px;
  height: 32px;
  background: var(--gradient-primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-sm);
  font-weight: 800;
  color: white;
  -webkit-text-fill-color: white;
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--space-2xl);
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.nav__link {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
  position: relative;
}

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

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

/* Mobile Menu Toggle */
.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-sm);
}

.nav__toggle-line {
  width: 24px;
  height: 2px;
  background: var(--color-text-primary);
  border-radius: 2px;
  transition: all var(--transition-base);
}

.nav__toggle--active .nav__toggle-line:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.nav__toggle--active .nav__toggle-line:nth-child(2) {
  opacity: 0;
}

.nav__toggle--active .nav__toggle-line:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 0.75rem 1.75rem;
  font-size: var(--text-sm);
  font-weight: 600;
  font-family: var(--font-sans);
  border-radius: var(--radius-lg);
  border: none;
  cursor: pointer;
  transition: all var(--transition-base);
  white-space: nowrap;
  text-decoration: none;
}

.btn--primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(99, 102, 241, 0.4);
  color: white;
}

.btn--secondary {
  background: transparent;
  color: var(--color-text-primary);
  border: 1px solid var(--color-border-light);
}

.btn--secondary:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: rgba(99, 102, 241, 0.05);
}

.btn--ghost {
  background: rgba(99, 102, 241, 0.1);
  color: var(--color-primary);
  border: 1px solid rgba(99, 102, 241, 0.2);
}

.btn--ghost:hover {
  background: rgba(99, 102, 241, 0.2);
  color: var(--color-primary);
}

.btn--large {
  padding: 1rem 2.25rem;
  font-size: var(--text-base);
  border-radius: var(--radius-xl);
}

.btn--small {
  padding: 0.5rem 1.25rem;
  font-size: var(--text-xs);
}

.btn-group {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
}

/* --- Cards --- */
.card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--gradient-primary);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.card:hover {
  border-color: rgba(99, 102, 241, 0.3);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}

.card:hover::before {
  opacity: 1;
}

.card__icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-xl);
  margin-bottom: var(--space-lg);
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid rgba(99, 102, 241, 0.2);
  color: var(--color-primary);
}

.card__icon--cyan {
  background: rgba(34, 211, 238, 0.1);
  border-color: rgba(34, 211, 238, 0.2);
  color: var(--color-secondary);
}

.card__icon--amber {
  background: rgba(245, 158, 11, 0.1);
  border-color: rgba(245, 158, 11, 0.2);
  color: var(--color-accent-warm);
}

.card__icon--green {
  background: rgba(52, 211, 153, 0.1);
  border-color: rgba(52, 211, 153, 0.2);
  color: var(--color-accent-green);
}

.card__icon--rose {
  background: rgba(251, 113, 133, 0.1);
  border-color: rgba(251, 113, 133, 0.2);
  color: var(--color-accent-rose);
}

.card__title {
  font-size: var(--text-lg);
  font-weight: 700;
  margin-bottom: var(--space-sm);
}

.card__text {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.card__list {
  margin-top: var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.card__list-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

.card__list-item::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--color-primary);
  border-radius: 50%;
  margin-top: 7px;
  flex-shrink: 0;
}

.card--featured {
  background: var(--gradient-card);
  border-color: rgba(99, 102, 241, 0.2);
}

.card--featured:hover {
  border-color: rgba(99, 102, 241, 0.4);
}

/* --- Grid Layouts --- */
.grid {
  display: grid;
  gap: var(--space-xl);
}

.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

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

.grid--features {
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-2xl);
}

/* --- Hero Section --- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  padding-top: var(--header-height);
  overflow: hidden;
}

.hero--short {
  min-height: auto;
  padding: calc(var(--header-height) + var(--space-5xl)) 0 var(--space-4xl);
}

.hero__bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
  z-index: 0;
}

.hero__bg-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.4;
}

.hero__bg-orb--1 {
  width: 600px;
  height: 600px;
  background: rgba(99, 102, 241, 0.3);
  top: -200px;
  right: -100px;
}

.hero__bg-orb--2 {
  width: 400px;
  height: 400px;
  background: rgba(34, 211, 238, 0.2);
  bottom: -100px;
  left: -100px;
}

.hero__bg-orb--3 {
  width: 300px;
  height: 300px;
  background: rgba(245, 158, 11, 0.1);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.hero__bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(99, 102, 241, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(99, 102, 241, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
}

.hero__content {
  position: relative;
  z-index: 1;
  max-width: 750px;
}

.hero__content--center {
  text-align: center;
  max-width: 850px;
  margin: 0 auto;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 0.4rem 1rem;
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid rgba(99, 102, 241, 0.2);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--space-xl);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.hero__badge-dot {
  width: 6px;
  height: 6px;
  background: var(--color-accent-green);
  border-radius: 50%;
  animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.hero__title {
  margin-bottom: var(--space-xl);
  line-height: 1.1;
}

.hero__subtitle {
  font-size: clamp(var(--text-lg), 2vw, var(--text-xl));
  color: var(--color-text-secondary);
  margin-bottom: var(--space-2xl);
  line-height: 1.7;
  max-width: 600px;
}

.hero__content--center .hero__subtitle {
  max-width: none;
}

.hero__actions {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.hero__content--center .hero__actions {
  justify-content: center;
}

/* Hero Visual (right side) */
.hero__layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4xl);
  align-items: center;
}

.hero__visual {
  position: relative;
  z-index: 1;
}

/* --- Flow Diagram (Platform Visual) --- */
.flow-diagram {
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-2xl);
  padding: var(--space-2xl);
  position: relative;
}

.flow-diagram__title {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-xl);
}

.flow-nodes {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.flow-node {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md) var(--space-lg);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  font-size: var(--text-sm);
  transition: all var(--transition-base);
}

.flow-node:hover {
  border-color: var(--color-primary);
  background: rgba(99, 102, 241, 0.05);
}

.flow-node__icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-sm);
  flex-shrink: 0;
}

.flow-node__icon--erp {
  background: rgba(245, 158, 11, 0.15);
  color: var(--color-accent-warm);
}

.flow-node__icon--crm {
  background: rgba(52, 211, 153, 0.15);
  color: var(--color-accent-green);
}

.flow-node__icon--api {
  background: rgba(251, 113, 133, 0.15);
  color: var(--color-accent-rose);
}

.flow-node__icon--ai {
  background: rgba(99, 102, 241, 0.15);
  color: var(--color-primary);
}

.flow-node__icon--insight {
  background: rgba(34, 211, 238, 0.15);
  color: var(--color-secondary);
}

.flow-node__label {
  font-weight: 600;
  color: var(--color-text-primary);
}

.flow-node__desc {
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
}

.flow-connector {
  display: flex;
  justify-content: center;
  padding: var(--space-xs) 0;
  color: var(--color-text-tertiary);
  font-size: var(--text-sm);
}

/* --- Stats Section --- */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-xl);
}

.stat {
  text-align: center;
  padding: var(--space-2xl) var(--space-lg);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  transition: all var(--transition-base);
}

.stat:hover {
  border-color: rgba(99, 102, 241, 0.3);
  transform: translateY(-2px);
}

.stat__number {
  font-size: var(--text-4xl);
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: var(--space-sm);
}

.stat__label {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  font-weight: 500;
}

/* --- Steps / Process --- */
.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-xl);
  position: relative;
}

.steps::before {
  content: '';
  position: absolute;
  top: 36px;
  left: 10%;
  right: 10%;
  height: 2px;
  background: var(--color-border);
  z-index: 0;
}

.step {
  text-align: center;
  position: relative;
  z-index: 1;
}

.step__number {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-xl);
  font-weight: 800;
  margin: 0 auto var(--space-lg);
  background: var(--color-bg-card);
  border: 2px solid var(--color-border);
  color: var(--color-primary);
  transition: all var(--transition-base);
}

.step:hover .step__number {
  border-color: var(--color-primary);
  background: rgba(99, 102, 241, 0.1);
  box-shadow: 0 0 30px rgba(99, 102, 241, 0.2);
}

.step__title {
  font-size: var(--text-base);
  font-weight: 700;
  margin-bottom: var(--space-sm);
}

.step__text {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* --- Feature List --- */
.feature-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4xl);
  align-items: center;
  padding: var(--space-4xl) 0;
}

.feature-row:not(:last-child) {
  border-bottom: 1px solid var(--color-border);
}

.feature-row--reverse {
  direction: rtl;
}

.feature-row--reverse > * {
  direction: ltr;
}

.feature__label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-md);
}

.feature__title {
  font-size: var(--text-2xl);
  font-weight: 700;
  margin-bottom: var(--space-md);
}

.feature__text {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-xl);
  line-height: 1.7;
}

.feature__visual {
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-2xl);
  padding: var(--space-2xl);
  min-height: 300px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* --- Industry Cards --- */
.industry-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
  transition: all var(--transition-base);
  display: flex;
  flex-direction: column;
}

.industry-card:hover {
  border-color: rgba(99, 102, 241, 0.3);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}

.industry-card__icon {
  font-size: var(--text-3xl);
  margin-bottom: var(--space-lg);
}

.industry-card__title {
  font-size: var(--text-lg);
  font-weight: 700;
  margin-bottom: var(--space-sm);
}

.industry-card__text {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-lg);
  flex: 1;
}

.industry-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.tag {
  display: inline-flex;
  padding: 0.25rem 0.75rem;
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--color-text-secondary);
  background: rgba(99, 102, 241, 0.08);
  border: 1px solid rgba(99, 102, 241, 0.15);
  border-radius: var(--radius-full);
}

/* --- Before/After Comparison --- */
.comparison {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: var(--space-xl);
  align-items: stretch;
}

.comparison__side {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
}

.comparison__side--before {
  border-color: rgba(251, 113, 133, 0.2);
}

.comparison__side--after {
  border-color: rgba(52, 211, 153, 0.2);
}

.comparison__divider {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-2xl);
  color: var(--color-text-tertiary);
}

.comparison__label {
  font-size: var(--text-sm);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-lg);
}

.comparison__label--before {
  color: var(--color-accent-rose);
}

.comparison__label--after {
  color: var(--color-accent-green);
}

.comparison__item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  padding: var(--space-sm) 0;
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

.comparison__item + .comparison__item {
  border-top: 1px solid var(--color-border);
}

/* --- Contact Form --- */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4xl);
}

.form {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.form__group {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.form__label {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-primary);
}

.form__input,
.form__textarea,
.form__select {
  padding: 0.875rem 1rem;
  font-size: var(--text-sm);
  font-family: var(--font-sans);
  color: var(--color-text-primary);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
  outline: none;
}

.form__input:focus,
.form__textarea:focus,
.form__select:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

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

.form__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--space-2xl);
}

.contact-info__item {
  display: flex;
  gap: var(--space-lg);
}

.contact-info__icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-lg);
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid rgba(99, 102, 241, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-lg);
  color: var(--color-primary);
  flex-shrink: 0;
}

.contact-info__label {
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-tertiary);
  margin-bottom: var(--space-xs);
}

.contact-info__value {
  font-size: var(--text-base);
  color: var(--color-text-primary);
  font-weight: 500;
}

/* --- Footer --- */
.footer {
  background: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border);
  padding: var(--space-4xl) 0 var(--space-2xl);
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-4xl);
  margin-bottom: var(--space-4xl);
}

.footer__brand {
  max-width: 300px;
}

.footer__brand .logo {
  margin-bottom: var(--space-lg);
}

.footer__brand-text {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.footer__heading {
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: var(--space-lg);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.footer__link {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
}

.footer__link:hover {
  color: var(--color-primary);
}

.footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-2xl);
  border-top: 1px solid var(--color-border);
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
}

/* --- CTA Banner --- */
.cta-banner {
  background: var(--gradient-card);
  border: 1px solid rgba(99, 102, 241, 0.2);
  border-radius: var(--radius-2xl);
  padding: var(--space-4xl);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-banner::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(ellipse at center, rgba(99, 102, 241, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.cta-banner__title {
  font-size: clamp(var(--text-2xl), 3vw, var(--text-4xl));
  margin-bottom: var(--space-md);
  position: relative;
}

.cta-banner__text {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-2xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  position: relative;
}

.cta-banner .btn-group {
  justify-content: center;
  position: relative;
}

/* --- Capability Metrics --- */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.metric-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  text-align: center;
  transition: all var(--transition-base);
}

.metric-card:hover {
  border-color: rgba(99, 102, 241, 0.3);
}

.metric-card__value {
  font-size: var(--text-2xl);
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: var(--space-xs);
}

.metric-card__label {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

/* --- Tabs --- */
.tabs {
  display: flex;
  gap: var(--space-sm);
  margin-bottom: var(--space-2xl);
  flex-wrap: wrap;
  justify-content: center;
}

.tab {
  padding: 0.625rem 1.25rem;
  font-size: var(--text-sm);
  font-weight: 500;
  font-family: var(--font-sans);
  color: var(--color-text-secondary);
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.tab:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.tab--active {
  background: rgba(99, 102, 241, 0.15);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

/* --- Animations --- */
.animate-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-in--visible {
  opacity: 1;
  transform: translateY(0);
}

.animate-in--delay-1 { transition-delay: 100ms; }
.animate-in--delay-2 { transition-delay: 200ms; }
.animate-in--delay-3 { transition-delay: 300ms; }
.animate-in--delay-4 { transition-delay: 400ms; }

/* --- Integration Logos Grid --- */
.integrations-visual {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}

.integration-node {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-lg);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-text-secondary);
  text-align: center;
  transition: all var(--transition-base);
}

.integration-node:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.integration-node__icon {
  font-size: var(--text-2xl);
}

/* --- Page Specific: Services detail cards --- */
.service-detail {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-2xl);
  overflow: hidden;
  transition: all var(--transition-base);
}

.service-detail:hover {
  border-color: rgba(99, 102, 241, 0.3);
  box-shadow: var(--shadow-glow);
}

.service-detail__header {
  padding: var(--space-2xl);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.service-detail__body {
  padding: var(--space-2xl);
}

.service-detail__features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}

.service-detail__feature {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  padding: var(--space-sm);
}

.service-detail__feature::before {
  content: '\2713';
  color: var(--color-accent-green);
  font-weight: 700;
  flex-shrink: 0;
}

/* --- Approach / Principles --- */
.principle {
  display: flex;
  gap: var(--space-xl);
  padding: var(--space-2xl);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  transition: all var(--transition-base);
}

.principle:hover {
  border-color: rgba(99, 102, 241, 0.3);
}

.principle__number {
  font-size: var(--text-3xl);
  font-weight: 800;
  color: var(--color-primary);
  opacity: 0.5;
  line-height: 1;
  flex-shrink: 0;
}

.principle__title {
  font-size: var(--text-lg);
  font-weight: 700;
  margin-bottom: var(--space-sm);
}

.principle__text {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* --- Responsive --- */
@media (max-width: 1024px) {
  .hero__layout {
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
  }

  .hero__visual {
    display: none;
  }

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

  .steps::before {
    display: none;
  }

  .footer__grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2xl);
  }

  .feature-row {
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
  }

  .feature-row--reverse {
    direction: ltr;
  }

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

  .comparison__divider {
    transform: rotate(90deg);
    padding: var(--space-md) 0;
  }

  .contact-layout {
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
  }

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

@media (max-width: 768px) {
  :root {
    --space-4xl: 4rem;
    --space-5xl: 5rem;
  }

  .nav__links {
    display: none;
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--color-bg-primary);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-2xl);
    z-index: 999;
  }

  .nav__links--open {
    display: flex;
  }

  .nav__link {
    font-size: var(--text-xl);
  }

  .nav__toggle {
    display: flex;
  }

  .nav .btn {
    display: none;
  }

  .grid--2,
  .grid--3,
  .grid--services {
    grid-template-columns: 1fr;
  }

  .stats,
  .steps,
  .grid--4 {
    grid-template-columns: 1fr;
  }

  .footer__grid {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }

  .footer__bottom {
    flex-direction: column;
    gap: var(--space-md);
    text-align: center;
  }

  .hero {
    min-height: auto;
    padding-top: calc(var(--header-height) + var(--space-3xl));
    padding-bottom: var(--space-3xl);
  }

  .hero__actions {
    flex-direction: column;
  }

  .hero__actions .btn {
    width: 100%;
    text-align: center;
  }

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

  .cta-banner {
    padding: var(--space-2xl);
  }

  .service-detail__features {
    grid-template-columns: 1fr;
  }

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

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

  .principle {
    flex-direction: column;
    gap: var(--space-md);
  }

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

/* --- Utility --- */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.mb-0 { margin-bottom: 0; }
.mt-xl { margin-top: var(--space-xl); }
.mt-2xl { margin-top: var(--space-2xl); }
.mt-3xl { margin-top: var(--space-3xl); }
.text-center { text-align: center; }
.text-sm { font-size: var(--text-sm); }

/* Divider */
.divider {
  height: 1px;
  background: var(--color-border);
  margin: var(--space-4xl) 0;
}