/* ===================================
   APPSERV — Main Stylesheet
   Light theme | #ff4b39 primary
   =================================== */

/* ===================================
   1. CSS Custom Properties
   =================================== */
:root {
  /* Colors */
  --color-bg: #ffffff;
  --color-bg-elevated: #f8f8f8;
  --color-bg-card: #ffffff;
  --color-bg-card-hover: #fafafa;
  --color-border: #e8e8e8;
  --color-border-light: #d0d0d0;
  --color-text: #1a1a1a;
  --color-text-secondary: #555555;
  --color-text-muted: #888888;
  --color-primary: #ff4b39;
  --color-primary-hover: #ff6b5a;
  --color-primary-dark: #e6432f;
  --color-primary-glow: rgba(255, 75, 57, 0.08);
  --color-primary-glow-strong: rgba(255, 75, 57, 0.15);
  --color-success: #10b981;
  --color-error: #ef4444;
  --color-overlay: rgba(255, 255, 255, 0.9);

  /* Typography */
  --font-heading: 'Space Grotesk', -apple-system, sans-serif;
  --font-body: 'Inter', -apple-system, sans-serif;

  /* Spacing */
  --space-2xs: 0.125rem;
  --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;

  /* Sizes */
  --container-max: 1200px;
  --container-padding: 1.5rem;
  --nav-height: 72px;

  /* Border radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 300ms ease;
  --transition-slow: 500ms ease;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
  --shadow-glow: 0 0 40px var(--color-primary-glow);
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  scroll-padding-top: var(--nav-height);
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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 {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}

input, textarea {
  font-family: inherit;
  font-size: inherit;
}

::selection {
  background-color: var(--color-primary);
  color: #ffffff;
}

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

/* ===================================
   3. Typography
   =================================== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.25rem, 5vw, 4rem); }
h2 { font-size: clamp(1.75rem, 3.5vw, 2.75rem); }
h3 { font-size: clamp(1.25rem, 2vw, 1.5rem); }

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

.text-gradient {
  background: linear-gradient(135deg, var(--color-primary) 0%, #e6432f 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ===================================
   4. Layout
   =================================== */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}
.container2 {
  width: 40%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

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

/* ===================================
   5. Utilities
   =================================== */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  top: -100%;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10000;
  padding: var(--space-sm) var(--space-lg);
  background: var(--color-primary);
  color: #ffffff;
  font-weight: 600;
  border-radius: var(--radius-sm);
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: var(--space-md);
}

/* ===================================
   6. Buttons
   =================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 0.75rem 1.5rem;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  font-weight: 600;
  line-height: 1;
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
  white-space: nowrap;
  cursor: pointer;
  border: none;
}

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

.btn-primary:hover {
  background-color: var(--color-primary-hover);
  box-shadow: var(--shadow-glow);
  transform: translateY(-1px);
}

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

.btn-outline:hover {
  border-color: var(--color-text-secondary);
  background: rgba(0, 0, 0, 0.03);
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: 1rem;
}

.btn-full {
  width: 100%;
}

.btn-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border-light);
  transition: all var(--transition-base);
}

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

/* Tags */
.tag {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  background: rgba(0, 0, 0, 0.03);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
}

/* ===================================
   7. Background Animation
   =================================== */
.bg-animation {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
}

.gradient-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.2;
}

.orb-1 {
  width: 600px;
  height: 600px;
  top: -200px;
  right: -100px;
  background: radial-gradient(circle, var(--color-primary-glow-strong) 0%, transparent 70%);
  animation: orbFloat1 20s ease-in-out infinite;
}

.orb-2 {
  width: 400px;
  height: 400px;
  bottom: 20%;
  left: -100px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.08) 0%, transparent 70%);
  animation: orbFloat2 25s ease-in-out infinite;
}

.orb-3 {
  width: 300px;
  height: 300px;
  top: 50%;
  right: 20%;
  background: radial-gradient(circle, var(--color-primary-glow) 0%, transparent 70%);
  animation: orbFloat3 18s ease-in-out infinite;
}

@keyframes orbFloat1 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(-50px, 30px) scale(1.1); }
  66% { transform: translate(30px, -20px) scale(0.95); }
}

@keyframes orbFloat2 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(40px, -30px) scale(1.05); }
  66% { transform: translate(-20px, 40px) scale(0.9); }
}

@keyframes orbFloat3 {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(-30px, -30px); }
}

/* ===================================
   8. Navigation
   =================================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition-base), background var(--transition-base);
}

.site-header.scrolled {
  border-bottom-color: var(--color-border);
  background: rgba(255, 255, 255, 0.95);
}

.site-header > .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.site-header > .container2 {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Logo */
.nav-logo {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.03em;
  transition: opacity var(--transition-fast);
}

.nav-logo:hover {
  opacity: 0.8;
}

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

/* Nav Menu */
.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.nav-menu[hidden] {
  display: flex;
}

.nav-link {
  padding: 0.5rem 1rem;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  border-radius: var(--radius-full);
  transition: color var(--transition-fast);
}

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

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

.nav-link.btn {
  color: #ffffff;
  margin-left: var(--space-sm);
}

/* Hamburger */
.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  z-index: 1001;
}

.hamburger-icon {
  display: flex;
  flex-direction: column;
  gap: 5px;
  width: 22px;
}

.hamburger-line {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all var(--transition-base);
  transform-origin: center;
}

.menu-toggle[aria-expanded="true"] .hamburger-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.menu-toggle[aria-expanded="true"] .hamburger-line:nth-child(2) {
  opacity: 0;
}

.menu-toggle[aria-expanded="true"] .hamburger-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ===================================
   9. Hero Section
   =================================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: calc(var(--nav-height) + var(--space-3xl));
  padding-bottom: var(--space-3xl);
  overflow: hidden;
}

.hero > .container {
  position: relative;
  z-index: 1;
}
.hero > .container2 {
  position: relative;
  z-index: 1;
}

.hero__content {
  max-width: 720px;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 0.5rem 1rem;
  margin-bottom: var(--space-xl);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  background: rgba(0, 0, 0, 0.03);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  opacity: 0;
  transform: translateY(20px);
}

.hero__badge-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  background: var(--color-primary);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 var(--color-primary-glow-strong); }
  50% { opacity: 0.8; box-shadow: 0 0 0 6px transparent; }
}

.hero__title {
  margin-bottom: var(--space-lg);
  opacity: 0;
  transform: translateY(30px);
}

.hero__subtitle {
  font-size: 1.125rem;
  max-width: 560px;
  margin-bottom: var(--space-2xl);
  opacity: 0;
  transform: translateY(30px);
}

.hero__ctas {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  margin-bottom: var(--space-3xl);
  opacity: 0;
  transform: translateY(30px);
}

.hero__stats {
  display: flex;
  gap: var(--space-3xl);
  opacity: 0;
  transform: translateY(30px);
}

.hero__stat {
  display: flex;
  flex-direction: column;
}

.hero__stat-value {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1;
}

.hero__stat-suffix {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1;
}

.hero__stat-label {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-top: var(--space-xs);
}

/* Hero visual decoration */
.hero__visual {
  position: absolute;
  top: 50%;
  right: -5%;
  transform: translateY(-50%);
  width: 500px;
  height: 500px;
  pointer-events: none;
}

.hero__glow {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: radial-gradient(circle, var(--color-primary-glow-strong) 0%, transparent 60%);
  filter: blur(60px);
  animation: heroGlow 8s ease-in-out infinite alternate;
}

@keyframes heroGlow {
  0% { transform: scale(1); opacity: 0.15; }
  100% { transform: scale(1.2); opacity: 0.25; }
}

/* ===================================
   10. Trusted By
   =================================== */
.trusted {
  padding: var(--space-3xl) 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  overflow: hidden;
}

.trusted__label {
  text-align: center;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-muted);
  margin-bottom: var(--space-xl);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.trusted__track {
  overflow: hidden;
  mask-image: linear-gradient(to right, transparent 0%, black 15%, black 85%, transparent 100%);
  -webkit-mask-image: linear-gradient(to right, transparent 0%, black 15%, black 85%, transparent 100%);
}

.trusted__logos {
  display: flex;
  gap: var(--space-4xl);
  animation: marquee 30s linear infinite;
  width: max-content;
}

.trusted__logo {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text-muted);
  white-space: nowrap;
  opacity: 0.5;
  transition: opacity var(--transition-base);
}

.trusted__logo:hover {
  opacity: 0.8;
}

@keyframes marquee {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* ===================================
   11. Section Headers
   =================================== */
.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto var(--space-3xl);
}

.section-label {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  margin-bottom: var(--space-md);
}

.section-title {
  margin-bottom: var(--space-lg);
  color: var(--color-text);
}

.section-subtitle {
  font-size: 1.0625rem;
  color: var(--color-text-secondary);
  max-width: 560px;
  margin: 0 auto;
}

/* ===================================
   12. Services
   =================================== */
.services__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}

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

.service-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  padding: 1px;
  background: linear-gradient(135deg, transparent 0%, transparent 40%, var(--color-primary-glow) 100%);
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask-composite: exclude;
  -webkit-mask-composite: xor;
  opacity: 0;
  transition: opacity var(--transition-base);
}

.service-card:hover {
  transform: translateY(-4px);
  background: var(--color-bg-card-hover);
  border-color: var(--color-border-light);
}

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

.service-card__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  margin-bottom: var(--space-xl);
  background: var(--color-primary-glow);
  border-radius: var(--radius-md);
  color: var(--color-primary);
}

.service-card__title {
  margin-bottom: var(--space-md);
  color: var(--color-text);
}

.service-card__description {
  margin-bottom: var(--space-xl);
  font-size: 0.9375rem;
}

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

/* ===================================
   13. Overview (Mockup 3 style)
   =================================== */
.overview {
  background: var(--color-bg-elevated);
}

.overview__header {
  max-width: 800px;
  margin-bottom: var(--space-2xl);
}

.overview__title {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  text-transform: uppercase;
  letter-spacing: -0.01em;
  line-height: 1.2;
  margin-bottom: var(--space-xl);
}

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

.overview__divider {
  width: 100%;
  height: 1px;
  background: linear-gradient(to right, var(--color-primary), var(--color-border), transparent);
  margin-bottom: var(--space-3xl);
}

.overview__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}

.overview-card {
  padding: var(--space-xl);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  transition: border-color var(--transition-base);
}

.overview-card:hover {
  border-color: var(--color-border-light);
}

/* Overview card visuals */
.overview-card__visual {
  height: 140px;
  margin-bottom: var(--space-xl);
  border-radius: var(--radius-sm);
  overflow: hidden;
  display: flex;
  align-items: center;
  position: relative;
}

.overview-card__visual--flows {
  flex-direction: column;
  justify-content: center;
  gap: var(--space-md);
  padding: var(--space-lg);
}

.visual-line {
  height: 4px;
  border-radius: 2px;
  background: var(--color-border-light);
}

.visual-line:nth-child(1) { width: 100%; }
.visual-line:nth-child(2) { width: 75%; }
.visual-line:nth-child(3) { width: 50%; }

.overview-card:hover .visual-line:nth-child(1) {
  background: linear-gradient(to right, var(--color-primary), var(--color-border-light));
  transition: background 0.6s ease;
}

.overview-card__visual--nodes {
  gap: var(--space-sm);
  padding: var(--space-lg);
}

.visual-block {
  flex: 1;
  height: 80px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border-light);
  transition: all var(--transition-base);
}

.visual-block--active {
  background: var(--color-primary);
  border-color: var(--color-primary);
}

.overview-card:hover .visual-block:nth-child(2) {
  background: rgba(0, 0, 0, 0.05);
}

.overview-card__visual--logic {
  padding: var(--space-lg);
}

.visual-chart {
  width: 100%;
  height: 100%;
}

.overview-card__title {
  font-size: clamp(1.25rem, 2vw, 1.75rem);
  text-transform: uppercase;
  letter-spacing: -0.01em;
  margin-bottom: var(--space-md);
  line-height: 1.2;
}

.overview-card__description {
  font-size: 0.875rem;
  margin-bottom: auto;
  padding-bottom: var(--space-xl);
}

.overview-card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-border);
}

.overview-card__label {
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
}

.overview-card__actions {
  display: flex;
  gap: var(--space-xs);
}

.overview-card__btn {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border-light);
  color: var(--color-text-muted);
  transition: all var(--transition-fast);
}

.overview-card__btn:hover {
  color: var(--color-text);
  border-color: var(--color-text-secondary);
}

/* ===================================
   14. Process
   =================================== */
.process__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-xl);
}

.process-step {
  position: relative;
  padding: var(--space-2xl);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
}

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

.process-step__number {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-lg);
}

.process-step__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  margin-bottom: var(--space-lg);
  background: var(--color-primary-glow);
  border-radius: var(--radius-md);
  color: var(--color-primary);
}

.process-step__title {
  margin-bottom: var(--space-md);
}

.process-step__description {
  font-size: 0.9375rem;
  margin-bottom: var(--space-lg);
}

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

.process-step__list li {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

.process-step__list li::before {
  content: '';
  width: 6px;
  height: 6px;
  flex-shrink: 0;
  background: var(--color-primary);
  border-radius: 50%;
}

/* ===================================
   15. Portfolio
   =================================== */
.portfolio__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}

.portfolio-card {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  transition: all var(--transition-base);
}

.portfolio-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-border-light);
  box-shadow: var(--shadow-lg);
}

.portfolio-card a {
  display: block;
}

.portfolio-card__image {
  position: relative;
  height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.portfolio-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.portfolio-card:hover .portfolio-card__image {
  filter: brightness(1.1);
}

.portfolio-card__content {
  padding: var(--space-xl);
}

.portfolio-card__type {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.portfolio-card__title {
  margin: var(--space-sm) 0 var(--space-md);
}

.portfolio-card__description {
  font-size: 0.9375rem;
  margin-bottom: var(--space-lg);
}

.portfolio-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}

.portfolio-card__results {
  display: flex;
  gap: var(--space-md);
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-border);
}

.portfolio-card__result {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-success);
}

/* ===================================
   16. Benefits
   =================================== */
.benefits {
  background: var(--color-bg-elevated);
}

.benefits__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}

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

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

.benefit-card__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  margin-bottom: var(--space-lg);
  background: var(--color-primary-glow);
  border-radius: var(--radius-md);
  color: var(--color-primary);
}

.benefit-card__title {
  font-size: 1.125rem;
  margin-bottom: var(--space-md);
}

.benefit-card__description {
  font-size: 0.9375rem;
}

/* ===================================
   17. Testimonials
   =================================== */
.testimonials__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}

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

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

.testimonial-card__stars {
  display: flex;
  gap: 2px;
  margin-bottom: var(--space-lg);
}

.testimonial-card__quote {
  margin-bottom: auto;
  padding-bottom: var(--space-xl);
}

.testimonial-card__quote p {
  font-size: 1rem;
  font-style: italic;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.testimonial-card__author {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-border);
}

.testimonial-card__avatar {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--color-primary-glow);
  color: var(--color-primary);
  font-family: var(--font-heading);
  font-size: 0.875rem;
  font-weight: 700;
  flex-shrink: 0;
}

.testimonial-card__info {
  display: flex;
  flex-direction: column;
}

.testimonial-card__name {
  font-weight: 600;
  font-size: 0.9375rem;
  color: var(--color-text);
}

.testimonial-card__role {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

/* ===================================
   18. Contact
   =================================== */
.contact__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4xl);
  align-items: start;
}

.contact__content .section-title {
  text-align: left;
}

.contact__text {
  font-size: 1.0625rem;
  margin-bottom: var(--space-2xl);
}

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

.contact__info-item {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
}

.contact__info-item svg {
  color: var(--color-primary);
  flex-shrink: 0;
}

/* Contact Form */
.contact__form-wrapper {
  padding: var(--space-2xl);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

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

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

.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-sm);
}

.required {
  color: var(--color-primary);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.875rem 1rem;
  background: var(--color-bg);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  color: var(--color-text);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--color-text-muted);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-glow);
}

.form-group input.invalid,
.form-group textarea.invalid {
  border-color: var(--color-error);
}

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

.form-message {
  margin-top: var(--space-md);
  padding: var(--space-md);
  border-radius: var(--radius-md);
  font-size: 0.9375rem;
  display: none;
}

.form-message.visible {
  display: block;
}

.form-message--success {
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: var(--color-success);
}

.form-message--error {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: var(--color-error);
}

/* ===================================
   19. CTA Banner
   =================================== */
.cta-banner {
  padding: var(--space-5xl) 0;
  background: linear-gradient(135deg, var(--color-bg-elevated) 0%, var(--color-bg) 50%, var(--color-bg-elevated) 100%);
  position: relative;
  overflow: hidden;
}

.cta-banner::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 600px;
  height: 600px;
  transform: translate(-50%, -50%);
  background: radial-gradient(circle, var(--color-primary-glow) 0%, transparent 60%);
  filter: blur(80px);
  pointer-events: none;
}

.cta-banner__content {
  position: relative;
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
}

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

.cta-banner__text {
  font-size: 1.125rem;
  margin-bottom: var(--space-2xl);
}

/* ===================================
   20. Footer
   =================================== */
.site-footer {
  padding: var(--space-4xl) 0 var(--space-xl);
  border-top: 1px solid var(--color-border);
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-3xl);
  margin-bottom: var(--space-3xl);
}

.footer__tagline {
  font-size: 0.9375rem;
  max-width: 320px;
  margin-top: var(--space-md);
}

.footer__nav h4,
.footer__contact h4 {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-lg);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer__nav ul,
.footer__contact ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.footer__nav a,
.footer__contact li {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
}

.footer__nav a:hover {
  color: var(--color-text);
}

.footer__bottom {
  padding-top: var(--space-xl);
  border-top: 1px solid var(--color-border);
}

.footer__bottom p {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

/* ===================================
   21. Portfolio Detail Pages
   =================================== */
.project-hero {
  padding: calc(var(--nav-height) + var(--space-3xl)) 0 var(--space-3xl);
  position: relative;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-xl);
  transition: color var(--transition-fast);
}

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

.project-hero__type {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  margin-bottom: var(--space-md);
}

.project-hero__title {
  font-size: clamp(2rem, 4vw, 3.25rem);
  margin-bottom: var(--space-lg);
}

.project-hero__badges {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}

.badge {
  display: inline-block;
  padding: 0.375rem 1rem;
  font-size: 0.8125rem;
  font-weight: 500;
  border-radius: var(--radius-full);
}

.badge--primary {
  background: var(--color-primary-glow);
  color: var(--color-primary);
  border: 1px solid rgba(255, 75, 57, 0.3);
}

.badge--secondary {
  background: rgba(0, 0, 0, 0.03);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border-light);
}

.project-hero__subtitle {
  font-size: 1.125rem;
  max-width: 640px;
  color: var(--color-text-secondary);
}

/* Project Showcase */
.project-showcase {
  padding: var(--space-xl) 0 var(--space-3xl);
}

.project-showcase__image {
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
}

.project-showcase__image img {
  width: 100%;
  height: auto;
  display: none;
}

/* Project Summary */
.project-summary__grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--space-3xl);
  align-items: start;
}

.project-summary__lead {
  font-size: 1.25rem;
  line-height: 1.7;
  color: var(--color-text-secondary);
}

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

.project-summary__facts-title {
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-lg);
  color: var(--color-text);
}

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

.project-fact {
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--color-border);
}

.project-fact:last-child {
  padding-bottom: 0;
  border-bottom: none;
}

.project-fact dt {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-xs);
}

.project-fact dd {
  font-size: 0.9375rem;
  color: var(--color-text);
}

/* Project Sections */
.section--alt {
  background: var(--color-bg-elevated);
}

.project-section__title {
  font-size: clamp(1.5rem, 3vw, 2rem);
  margin-bottom: var(--space-xl);
}

.project-section__content {
  max-width: 720px;
}

.project-section__content p {
  margin-bottom: var(--space-md);
}

.project-section__content p:last-child {
  margin-bottom: 0;
}

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

.project-section__list li {
  display: flex;
  align-items: baseline;
  gap: var(--space-md);
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
}

.project-section__list li::before {
  content: '';
  width: 6px;
  height: 6px;
  flex-shrink: 0;
  background: var(--color-primary);
  border-radius: 50%;
  margin-top: 0.5em;
}

/* Project Gallery */
.project-gallery__text {
  margin-bottom: var(--space-2xl);
}

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

.project-gallery__item {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
}

.project-gallery__item img {
  width: 100%;
  display: block;
}

.project-gallery__item figcaption {
  padding: var(--space-md) var(--space-lg);
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

/* Project Results */
.project-results__metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
  margin-top: var(--space-2xl);
}

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

.result-metric__value {
  display: block;
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: var(--space-sm);
}

.result-metric__label {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
}

/* Project CTA */
.project-cta__content {
  text-align: center;
  max-width: 560px;
  margin: 0 auto;
}

.project-cta__title {
  font-size: clamp(1.5rem, 3vw, 2rem);
  margin-bottom: var(--space-md);
}

.project-cta__text {
  font-size: 1.0625rem;
  margin-bottom: var(--space-xl);
}

/* ===================================
   22. GSAP Animation Classes
   =================================== */
.gs-reveal {
  opacity: 0;
  transform: translateY(40px);
  will-change: transform, opacity;
}

.gs-reveal-left {
  opacity: 0;
  transform: translateX(-40px);
  will-change: transform, opacity;
}

.gs-reveal-right {
  opacity: 0;
  transform: translateX(40px);
  will-change: transform, opacity;
}

.gs-reveal-scale {
  opacity: 0;
  transform: scale(0.95);
  will-change: transform, opacity;
}

/* ===================================
   23. Responsive Design
   =================================== */

/* Tablet: 1024px and below */
@media (max-width: 1024px) {
  .services__grid,
  .overview__grid,
  .portfolio__grid,
  .benefits__grid,
  .testimonials__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero__visual {
    display: none;
  }

  .hero__content {
    max-width: 100%;
  }

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

  .footer__brand {
    grid-column: 1 / -1;
  }

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

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

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

/* Mobile: 768px and below */
@media (max-width: 768px) {
  :root {
    --container-padding: 1.25rem;
    --space-5xl: 5rem;
    --space-4xl: 3.5rem;
  }

  /* Navigation mobile */
  .menu-toggle {
    display: flex;
  }

  .nav-menu {
    display: none;
    position: fixed;
    inset: 0;
    top: var(--nav-height);
    background: var(--color-bg);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-lg);
    z-index: 999;
    border-top: 1px solid var(--color-border);
  }

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

  .nav-menu[hidden] {
    display: none;
  }

  .nav-link {
    font-size: 1.25rem;
    padding: var(--space-md) var(--space-xl);
  }

  .nav-link.btn {
    color: #ffffff;
    margin-left: 0;
    margin-top: var(--space-md);
  }

  /* Hero mobile */
  .hero {
    min-height: auto;
    padding-top: calc(var(--nav-height) + var(--space-3xl));
    padding-bottom: var(--space-3xl);
  }

  .hero__title {
    font-size: clamp(2rem, 8vw, 3rem);
  }

  .hero__stats {
    gap: var(--space-2xl);
    flex-wrap: wrap;
  }

  .hero__stat-value {
    font-size: 1.75rem;
  }

  .hero__stat-suffix {
    font-size: 1.75rem;
  }

  /* Grids mobile */
  .services__grid,
  .overview__grid,
  .portfolio__grid,
  .benefits__grid,
  .testimonials__grid,
  .process__grid {
    grid-template-columns: 1fr;
  }

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

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

  .project-gallery__grid {
    grid-template-columns: 1fr;
  }

  .project-results__metrics {
    grid-template-columns: 1fr;
  }

  .project-hero__title {
    font-size: clamp(1.75rem, 6vw, 2.5rem);
  }

  /* Section spacing mobile */
  .section-header {
    margin-bottom: var(--space-2xl);
  }
}

/* Small mobile: 480px and below */
@media (max-width: 480px) {
  :root {
    --container-padding: 1rem;
    --space-5xl: 4rem;
    --space-4xl: 3rem;
  }

  .hero__ctas {
    flex-direction: column;
  }

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

  .hero__stats {
    gap: var(--space-xl);
  }

  .hero__stat-value {
    font-size: 1.5rem;
  }

  .hero__stat-suffix {
    font-size: 1.5rem;
  }

  .service-card,
  .process-step,
  .benefit-card,
  .testimonial-card {
    padding: var(--space-xl);
  }

  .contact__form-wrapper {
    padding: var(--space-xl);
  }
}

/* Prefers reduced motion */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .gradient-orb {
    animation: none;
  }

  .hero__glow {
    animation: none;
  }

  .trusted__logos {
    animation: none;
  }

  .gs-reveal,
  .gs-reveal-left,
  .gs-reveal-right,
  .gs-reveal-scale {
    opacity: 1;
    transform: none;
  }
}

/* High contrast mode */
@media (prefers-contrast: high) {
  :root {
    --color-border: #999999;
    --color-border-light: #777777;
    --color-text-secondary: #333333;
    --color-text-muted: #555555;
  }
}

/* Print styles */
@media print {
  .bg-animation,
  .site-header,
  .hero__visual,
  .trusted,
  .cta-banner {
    display: none;
  }

  body {
    background: #fff;
    color: #000;
  }

  .section {
    padding: 2rem 0;
  }
}