/* ============================================================
   TECNOVATEC — Enterprise Technology Website
   Design System: Dark Premium / Apple × Stripe × Vercel
   Author: Tecnovatec Senior Design Team
   ============================================================ */

/* ------------------------------------------------------------
   1. CSS Custom Properties (Design Tokens)
   ------------------------------------------------------------ */
:root {
  /* Colors */
  --color-bg: #050507;
  --color-surface: #0e0e14;
  --color-surface-elevated: #14141c;
  --color-surface-glass: rgba(14, 14, 20, 0.72);
  --color-border: rgba(255, 255, 255, 0.06);
  --color-border-hover: rgba(255, 255, 255, 0.12);

  --color-text-primary: #f0f0f5;
  --color-text-secondary: #9ca3af;
  --color-text-muted: #6b7280;

  --color-accent-cyan: #00d4ff;
  --color-accent-blue: #4f46e5;
  --color-accent-purple: #a855f7;
  --color-accent-green: #22c55e;

  --color-gradient-start: #00d4ff;
  --color-gradient-mid: #4f46e5;
  --color-gradient-end: #a855f7;

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'SF Mono', 'Fira Code', 'Cascadia Code', Consolas, monospace;

  --text-xs: clamp(0.75rem, 0.7rem + 0.2vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.2vw, 1rem);
  --text-base: clamp(1rem, 0.9rem + 0.3vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.4vw, 1.25rem);
  --text-xl: clamp(1.25rem, 1.1rem + 0.5vw, 1.5rem);
  --text-2xl: clamp(1.5rem, 1.2rem + 1vw, 2rem);
  --text-3xl: clamp(2rem, 1.5rem + 1.5vw, 3rem);
  --text-4xl: clamp(2.5rem, 1.8rem + 2.5vw, 4.5rem);
  --text-5xl: clamp(3rem, 2rem + 3.5vw, 6rem);

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Layout */
  --max-width: 1280px;
  --header-height: 120px;

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

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 40px rgba(0, 212, 255, 0.15);

  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

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

@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;
  }
}

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--color-text-primary);
  background-color: var(--color-bg);
  overflow-x: hidden;
  min-height: 100vh;
}

::selection {
  background: rgba(0, 212, 255, 0.25);
  color: var(--color-text-primary);
}

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

a {
  color: inherit;
  text-decoration: none;
}

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

ul, ol {
  list-style: none;
}

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

/* ------------------------------------------------------------
   3. Utilities
   ------------------------------------------------------------ */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

@media (min-width: 640px) {
  .container {
    padding: 0 var(--space-8);
  }
}

@media (min-width: 1024px) {
  .container {
    padding: 0 var(--space-12);
  }
}

.gradient-text {
  background: linear-gradient(135deg, var(--color-gradient-start), var(--color-gradient-mid), var(--color-gradient-end));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-4);
  padding: var(--space-3) var(--space-6);
  background: var(--color-accent-cyan);
  color: var(--color-bg);
  font-weight: 600;
  border-radius: var(--radius-md);
  z-index: 10000;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: var(--space-4);
}

/* ------------------------------------------------------------
   4. Buttons
   ------------------------------------------------------------ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-sm);
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
  white-space: nowrap;
}

.btn .icon {
  flex-shrink: 0;
  transition: transform var(--transition-base);
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-accent-blue), var(--color-accent-cyan));
  color: #fff;
  box-shadow: 0 4px 20px rgba(79, 70, 229, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(79, 70, 229, 0.4);
}

.btn-primary:hover .icon {
  transform: translateX(2px);
}

.btn-secondary {
  background: var(--color-surface-elevated);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
  backdrop-filter: blur(12px);
}

.btn-secondary:hover {
  border-color: var(--color-border-hover);
  background: rgba(255, 255, 255, 0.05);
}

.btn-secondary:hover .icon {
  transform: translateY(2px);
}

.btn-large {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-base);
  border-radius: var(--radius-lg);
}

.btn-full {
  width: 100%;
}

/* ------------------------------------------------------------
   5. Section Headers
   ------------------------------------------------------------ */
.section-header {
  margin-bottom: var(--space-16);
}

.section-header.center {
  text-align: center;
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
}

.section-eyebrow {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-accent-cyan);
  margin-bottom: var(--space-4);
}

.section-title {
  font-size: var(--text-3xl);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-4);
}

.section-desc {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  line-height: 1.7;
  max-width: 640px;
}

.section-header.center .section-desc {
  margin-left: auto;
  margin-right: auto;
}

/* ------------------------------------------------------------
   6. Header / Navigation
   ------------------------------------------------------------ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  z-index: 1000;
  transition: background var(--transition-base), box-shadow var(--transition-base), backdrop-filter var(--transition-base);
}

.site-header.scrolled {
  background: var(--color-surface-glass);
  backdrop-filter: blur(20px) saturate(1.5);
  -webkit-backdrop-filter: blur(20px) saturate(1.5);
  box-shadow: 0 1px 0 var(--color-border);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

@media (min-width: 640px) {
  .header-container {
    padding: 0 var(--space-8);
  }
}

@media (min-width: 1024px) {
  .header-container {
    padding: 0 var(--space-12);
  }
}

.logo {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
}

.logo img {
  width: 228px;
  height: 78px;
}

.site-footer .logo img {
  width: 160px;
  height: 54px;
}

.main-nav {
  display: none;
}

@media (min-width: 1024px) {
  .main-nav {
    display: block;
  }
}

.nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.nav-link {
  display: inline-block;
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background var(--transition-fast);
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 20px;
  height: 2px;
  background: var(--color-accent-cyan);
  border-radius: var(--radius-full);
  transition: transform var(--transition-base);
}

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

.nav-link:hover::after,
.nav-link:focus::after {
  transform: translateX(-50%) scaleX(1);
}

.nav-cta {
  background: linear-gradient(135deg, var(--color-accent-blue), var(--color-accent-cyan));
  color: #fff !important;
  margin-left: var(--space-2);
}

.nav-cta::after {
  display: none;
}

.nav-cta:hover {
  box-shadow: 0 4px 16px rgba(79, 70, 229, 0.35);
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: var(--space-2);
  border-radius: var(--radius-md);
  transition: background var(--transition-fast);
}

.menu-toggle:hover {
  background: rgba(255, 255, 255, 0.05);
}

.menu-bar {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text-primary);
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
  transform-origin: center;
}

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

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

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

@media (min-width: 1024px) {
  .menu-toggle {
    display: none;
  }
}

/* Mobile Nav Overlay */
.main-nav.mobile-open {
  display: block;
  position: fixed;
  inset: var(--header-height) 0 0 0;
  background: var(--color-surface-glass);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  padding: var(--space-8);
  animation: fadeIn var(--transition-base) forwards;
}

.main-nav.mobile-open .nav-list {
  flex-direction: column;
  align-items: stretch;
  gap: var(--space-2);
}

.main-nav.mobile-open .nav-link {
  display: block;
  padding: var(--space-4);
  font-size: var(--text-lg);
  text-align: center;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* ------------------------------------------------------------
   7. Hero Section
   ------------------------------------------------------------ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: calc(var(--header-height) + var(--space-12)) var(--space-6) var(--space-16);
  overflow: hidden;
}

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

.gradient-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.45;
  animation: orbFloat 20s ease-in-out infinite;
}

.orb-1 {
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--color-accent-blue), transparent 70%);
  top: -10%;
  left: -10%;
  animation-delay: 0s;
}

.orb-2 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, var(--color-accent-cyan), transparent 70%);
  bottom: -5%;
  right: -5%;
  animation-delay: -7s;
}

.orb-3 {
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, var(--color-accent-purple), transparent 70%);
  top: 40%;
  left: 50%;
  transform: translateX(-50%);
  animation-delay: -14s;
}

@keyframes orbFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  25% { transform: translate(30px, -40px) scale(1.05); }
  50% { transform: translate(-20px, 20px) scale(0.95); }
  75% { transform: translate(40px, 30px) scale(1.02); }
}

#particle-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0.35;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 900px;
  text-align: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: rgba(0, 212, 255, 0.08);
  border: 1px solid rgba(0, 212, 255, 0.15);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-accent-cyan);
  margin-bottom: var(--space-8);
}

.badge-dot {
  width: 8px;
  height: 8px;
  background: var(--color-accent-cyan);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.85); }
}

.hero-title {
  font-size: var(--text-4xl);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-6);
}

.hero-subtitle {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  line-height: 1.7;
  max-width: 640px;
  margin: 0 auto var(--space-10);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  justify-content: center;
  margin-bottom: var(--space-16);
}

.hero-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-6);
  flex-wrap: wrap;
}

.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-1);
}

.stat-number,
.stat-suffix {
  font-size: var(--text-2xl);
  font-weight: 800;
  background: linear-gradient(135deg, #fff, #a5b4fc);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}

.stat-label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.stat-divider {
  width: 1px;
  height: 40px;
  background: var(--color-border);
}

.scroll-indicator {
  position: absolute;
  bottom: var(--space-8);
  left: 50%;
  transform: translateX(-50%);
  opacity: 0.4;
  animation: bounce 2s ease-in-out infinite;
}

.scroll-mouse {
  width: 24px;
  height: 40px;
  border: 2px solid var(--color-text-muted);
  border-radius: var(--radius-full);
  position: relative;
}

.scroll-wheel {
  width: 4px;
  height: 8px;
  background: var(--color-text-muted);
  border-radius: var(--radius-full);
  position: absolute;
  top: 8px;
  left: 50%;
  transform: translateX(-50%);
  animation: scrollWheel 2s ease-in-out infinite;
}

@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

@keyframes scrollWheel {
  0%, 100% { opacity: 1; top: 8px; }
  50% { opacity: 0.3; top: 18px; }
}

/* ------------------------------------------------------------
   8. Services Section
   ------------------------------------------------------------ */
.services {
  padding: var(--space-32) 0;
  position: relative;
}

.services::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  max-width: var(--max-width);
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-border), transparent);
}

.services-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

@media (min-width: 640px) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .services-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.service-card {
  padding: var(--space-8);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: all var(--transition-slow);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-accent-cyan), transparent);
  opacity: 0;
  transition: opacity var(--transition-slow);
}

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

.service-card:hover::before {
  opacity: 0.6;
}

.service-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.1), rgba(79, 70, 229, 0.1));
  border-radius: var(--radius-md);
  color: var(--color-accent-cyan);
  margin-bottom: var(--space-6);
  transition: all var(--transition-base);
}

.service-card:hover .service-icon {
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.2), rgba(79, 70, 229, 0.2));
  transform: scale(1.05);
}

.service-title {
  font-size: var(--text-xl);
  font-weight: 700;
  margin-bottom: var(--space-3);
  color: var(--color-text-primary);
}

.service-desc {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: var(--space-6);
}

.service-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.service-tags li {
  font-size: var(--text-xs);
  font-weight: 500;
  padding: var(--space-1) var(--space-3);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  color: var(--color-text-muted);
  transition: all var(--transition-fast);
}

.service-card:hover .service-tags li {
  background: rgba(0, 212, 255, 0.06);
  border-color: rgba(0, 212, 255, 0.12);
  color: var(--color-text-secondary);
}

/* ------------------------------------------------------------
   9. Why Us Section
   ------------------------------------------------------------ */
.why-us {
  padding: var(--space-32) 0;
  background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-surface) 50%, var(--color-bg) 100%);
}

.why-us-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-12);
  align-items: start;
}

@media (min-width: 1024px) {
  .why-us-grid {
    grid-template-columns: 1.2fr 0.8fr;
    gap: var(--space-16);
  }
}

.feature-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  margin-top: var(--space-10);
}

@media (min-width: 640px) {
  .feature-list {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-4);
  }
}

@media (min-width: 1024px) {
  .feature-list {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }
}

.feature-item {
  display: flex;
  gap: var(--space-4);
  padding: var(--space-5);
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
}

.feature-item:hover {
  background: rgba(255, 255, 255, 0.04);
  border-color: var(--color-border-hover);
  transform: translateX(4px);
}

.feature-icon {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-accent-blue), var(--color-accent-cyan));
  border-radius: var(--radius-sm);
  color: #fff;
}

.feature-text h4 {
  font-size: var(--text-base);
  font-weight: 700;
  margin-bottom: var(--space-1);
}

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

/* Why Us Stats */
.why-us-stats {
  display: flex;
  justify-content: center;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
  width: 100%;
}

@media (min-width: 640px) and (max-width: 1023px) {
  .stat-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.stat-box {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-6) var(--space-4);
  background: var(--color-surface-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
}

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

.stat-box-number {
  font-size: var(--text-2xl);
  font-weight: 800;
  background: linear-gradient(135deg, var(--color-accent-cyan), var(--color-accent-blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: var(--space-2);
}

.stat-box-label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  line-height: 1.4;
}

/* ------------------------------------------------------------
   10. Tech Stack Section
   ------------------------------------------------------------ */
.tech-stack {
  padding: var(--space-32) 0;
}

.tech-categories {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

@media (min-width: 640px) {
  .tech-categories {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .tech-categories {
    grid-template-columns: repeat(3, 1fr);
  }
}

.tech-category {
  padding: var(--space-8);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
}

.tech-category:hover {
  border-color: var(--color-border-hover);
  transform: translateY(-2px);
}

.tech-cat-title {
  font-size: var(--text-lg);
  font-weight: 700;
  margin-bottom: var(--space-5);
  color: var(--color-text-primary);
}

.tech-items {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.tech-item {
  font-size: var(--text-sm);
  font-weight: 500;
  padding: var(--space-2) var(--space-4);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
}

.tech-item:hover {
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.1), rgba(79, 70, 229, 0.1));
  border-color: rgba(0, 212, 255, 0.2);
  color: var(--color-text-primary);
}

/* ------------------------------------------------------------
   11. Process Section
   ------------------------------------------------------------ */
.process {
  padding: var(--space-32) 0;
  background: linear-gradient(180deg, var(--color-bg), var(--color-surface), var(--color-bg));
}

.process-timeline {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  max-width: 800px;
  margin: 0 auto;
}

@media (min-width: 768px) {
  .process-timeline {
    grid-template-columns: repeat(2, 1fr);
  }
}

.process-step {
  padding: var(--space-8);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  position: relative;
  transition: all var(--transition-base);
}

.process-step:hover {
  border-color: var(--color-border-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.step-number {
  font-size: var(--text-3xl);
  font-weight: 900;
  background: linear-gradient(135deg, var(--color-accent-cyan), var(--color-accent-blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: var(--space-4);
  opacity: 0.6;
}

.step-content h3 {
  font-size: var(--text-xl);
  font-weight: 700;
  margin-bottom: var(--space-3);
}

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

/* ------------------------------------------------------------
   12. About Section
   ------------------------------------------------------------ */
.about {
  padding: var(--space-32) 0;
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-16);
  align-items: center;
}

@media (min-width: 1024px) {
  .about-grid {
    grid-template-columns: 1.2fr 0.8fr;
    gap: var(--space-20);
  }
}

.about-content p {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: var(--space-6);
}

.about-content p strong {
  color: var(--color-text-primary);
}

.about-values {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  margin-top: var(--space-10);
}

@media (min-width: 640px) {
  .about-values {
    grid-template-columns: 1fr 1fr;
  }
}

.value {
  padding: var(--space-6);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
}

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

.value strong {
  display: block;
  font-size: var(--text-base);
  font-weight: 700;
  margin-bottom: var(--space-2);
  color: var(--color-accent-cyan);
}

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

/* About Visual */
.about-visual {
  display: flex;
  justify-content: center;
}

.about-card {
  width: 100%;
  max-width: 360px;
  background: var(--color-surface-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-10);
  text-align: center;
  box-shadow: var(--shadow-lg);
}

.about-year {
  margin-bottom: var(--space-8);
}

.year-number {
  display: block;
  font-size: var(--text-5xl);
  font-weight: 900;
  background: linear-gradient(135deg, var(--color-accent-cyan), var(--color-accent-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}

.year-label {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.15em;
}

.about-divider {
  width: 60px;
  height: 2px;
  background: linear-gradient(90deg, var(--color-accent-cyan), var(--color-accent-purple));
  margin: 0 auto var(--space-8);
  border-radius: var(--radius-full);
}

.clients-label {
  display: block;
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-4);
}

.client-logos {
  display: flex;
  justify-content: center;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.client-logo {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
}

.client-logo:hover {
  border-color: var(--color-accent-cyan);
  color: var(--color-accent-cyan);
  transform: translateY(-2px);
}

/* ------------------------------------------------------------
   13. Contact Section
   ------------------------------------------------------------ */
.contact {
  padding: var(--space-32) 0;
  background: linear-gradient(180deg, var(--color-bg), var(--color-surface));
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-16);
  align-items: start;
}

@media (min-width: 1024px) {
  .contact-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-20);
  }
}

.contact-methods {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  margin-top: var(--space-10);
}

.contact-method {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-5);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
}

.contact-method:hover {
  border-color: var(--color-border-hover);
  transform: translateX(4px);
}

.contact-whatsapp {
  background: linear-gradient(135deg, rgba(34, 197, 94, 0.1), rgba(34, 197, 94, 0.05));
  border-color: rgba(34, 197, 94, 0.2);
}

.contact-whatsapp:hover {
  border-color: rgba(34, 197, 94, 0.4);
  box-shadow: 0 4px 20px rgba(34, 197, 94, 0.1);
}

.contact-icon {
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.04);
  border-radius: var(--radius-md);
  color: var(--color-accent-cyan);
}

.contact-whatsapp .contact-icon {
  color: var(--color-accent-green);
}

.contact-info {
  display: flex;
  flex-direction: column;
}

.contact-label {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.contact-value {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-text-primary);
}

/* Contact Form */
.contact-form-wrapper {
  background: var(--color-surface-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  box-shadow: var(--shadow-lg);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-group label {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-secondary);
}

.form-group input,
.form-group textarea,
.form-group select {
  padding: var(--space-3) var(--space-10) var(--space-3) var(--space-4);
  background: rgba(255, 255, 255, 0.03);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%236b7280' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  background-size: 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  color: var(--color-text-primary);
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.form-group select option {
  background: var(--color-surface-elevated);
  color: var(--color-text-primary);
  padding: var(--space-2) var(--space-4);
}

.form-group select option:first-child {
  color: var(--color-text-muted);
}

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

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--color-accent-cyan);
  background: rgba(0, 212, 255, 0.03);
  box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

.form-group input:user-invalid,
.form-group textarea:user-invalid,
.form-group select:user-invalid {
  border-color: #ef4444;
  background: rgba(239, 68, 68, 0.05);
}

.form-group input:user-invalid:focus,
.form-group textarea:user-invalid:focus,
.form-group select:user-invalid:focus {
  border-color: #ef4444;
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.15);
}

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

.form-note {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-top: var(--space-2);
}

/* ------------------------------------------------------------
   14. CTA Banner
   ------------------------------------------------------------ */
.cta-banner {
  padding: var(--space-24) 0;
  position: relative;
  overflow: hidden;
}

.cta-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(79, 70, 229, 0.1), rgba(0, 212, 255, 0.08), rgba(168, 85, 247, 0.06));
  filter: blur(80px);
}

.cta-content {
  position: relative;
  text-align: center;
  max-width: 720px;
  margin: 0 auto;
}

.cta-title {
  font-size: var(--text-3xl);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: var(--space-4);
}

.cta-desc {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: var(--space-8);
}

/* ------------------------------------------------------------
   15. Footer
   ------------------------------------------------------------ */
.site-footer {
  padding: var(--space-20) 0 var(--space-10);
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-12);
  margin-bottom: var(--space-12);
}

@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: 1.5fr 1fr;
  }
}

@media (min-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1.5fr 1fr;
  }
}

.footer-brand .logo {
  margin-bottom: var(--space-4);
}

.footer-desc {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: 1.7;
  max-width: 360px;
  margin-bottom: var(--space-6);
}

.footer-social {
  display: flex;
  gap: var(--space-3);
}

.footer-social a {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
}

.footer-social a:hover {
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.1), rgba(79, 70, 229, 0.1));
  border-color: rgba(0, 212, 255, 0.2);
  color: var(--color-accent-cyan);
  transform: translateY(-2px);
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-8);
}

@media (min-width: 640px) {
  .footer-nav {
    grid-template-columns: repeat(3, 1fr);
  }
}

.footer-heading {
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: var(--space-4);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

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

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

.footer-bottom {
  padding-top: var(--space-8);
  border-top: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  text-align: center;
}

.footer-bottom p {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

@media (min-width: 768px) {
  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

/* ------------------------------------------------------------
   16. WhatsApp Float Button
   ------------------------------------------------------------ */
.whatsapp-float {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #25d366, #128c7e);
  border-radius: 50%;
  color: #fff;
  box-shadow: 0 4px 20px rgba(37, 211, 102, 0.3);
  z-index: 999;
  transition: all var(--transition-base);
  animation: whatsappPulse 3s ease-in-out infinite;
}

.whatsapp-float:hover {
  transform: scale(1.1) translateY(-4px);
  box-shadow: 0 8px 30px rgba(37, 211, 102, 0.4);
}

@keyframes whatsappPulse {
  0%, 100% { box-shadow: 0 4px 20px rgba(37, 211, 102, 0.3); }
  50% { box-shadow: 0 4px 30px rgba(37, 211, 102, 0.5); }
}

/* ------------------------------------------------------------
   17. Scroll Animations
   ------------------------------------------------------------ */
[data-animate] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1), transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-animate="fade-left"] {
  transform: translateX(-24px);
}

[data-animate="fade-right"] {
  transform: translateX(24px);
}

[data-animate].animate-visible {
  opacity: 1;
  transform: translate(0, 0);
}

/* Stagger delays */
[data-delay="0"] { transition-delay: 0ms; }
[data-delay="80"] { transition-delay: 80ms; }
[data-delay="100"] { transition-delay: 100ms; }
[data-delay="160"] { transition-delay: 160ms; }
[data-delay="200"] { transition-delay: 200ms; }
[data-delay="240"] { transition-delay: 240ms; }
[data-delay="280"] { transition-delay: 280ms; }
[data-delay="300"] { transition-delay: 300ms; }
[data-delay="320"] { transition-delay: 320ms; }
[data-delay="360"] { transition-delay: 360ms; }
[data-delay="400"] { transition-delay: 400ms; }
[data-delay="440"] { transition-delay: 440ms; }

/* ------------------------------------------------------------
   18. Responsive Adjustments
   ------------------------------------------------------------ */
@media (max-width: 639px) {
  .hero-title {
    font-size: var(--text-3xl);
  }

  .hero-stats {
    gap: var(--space-4);
  }

  .stat-divider {
    display: none;
  }

  .stat-item {
    min-width: 100px;
  }

  .section-title {
    font-size: var(--text-2xl);
  }

  .contact-grid {
    gap: var(--space-10);
  }

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

@media (max-width: 1023px) {
  .why-us-grid {
    grid-template-columns: 1fr;
  }

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

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

/* High DPI screens */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
  body {
    -webkit-font-smoothing: antialiased;
  }
}

/* Print styles */
@media print {
  .site-header,
  .hero-bg,
  .scroll-indicator,
  .whatsapp-float,
  .site-footer {
    display: none !important;
  }

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

/* ============================================================
   ADDENDUM: Logo visibility & Client logos
   ============================================================ */

/* Logo with white background so it pops on dark */
.logo img {
  display: block;
  object-fit: contain;
}

/* Clients / Trust section */
.clients {
  padding: var(--space-24) 0;
  background: linear-gradient(180deg, #f8f9fc 0%, #ffffff 50%, #f8f9fc 100%);
  color: #0f0f1a;
}

.clients .section-title {
  color: #0f0f1a;
}

.clients .section-desc {
  color: #4b5563;
}

.clients-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
  margin-top: var(--space-12);
}

@media (min-width: 640px) {
  .clients-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1024px) {
  .clients-grid {
    grid-template-columns: repeat(6, 1fr);
  }
}

@media (min-width: 768px) and (max-width: 1023px) {
  .clients-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.client-card {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-6);
  background: #ffffff;
  border: 1px solid rgba(0,0,0,0.06);
  border-radius: var(--radius-lg);
  box-shadow: 0 2px 12px rgba(0,0,0,0.04);
  transition: all var(--transition-base);
  min-height: 140px;
}

.client-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.08);
  border-color: rgba(0,0,0,0.1);
}

.client-card img {
  max-width: 100%;
  max-height: 80px;
  width: auto;
  height: auto;
  object-fit: contain;
  filter: grayscale(100%);
  opacity: 0.75;
  transition: all var(--transition-base);
}

.client-card:hover img {
  filter: grayscale(0%);
  opacity: 1;
}

/* Sectors in about card */
.about-sectors {
  margin-top: var(--space-4);
}

.sectors-label {
  display: block;
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-4);
}

.sectors-list {
  display: flex;
  justify-content: center;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.sector-tag {
  font-size: var(--text-xs);
  font-weight: 600;
  padding: var(--space-2) var(--space-4);
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.08), rgba(79, 70, 229, 0.08));
  border: 1px solid rgba(0, 212, 255, 0.15);
  border-radius: var(--radius-full);
  color: var(--color-accent-cyan);
  transition: all var(--transition-fast);
}

.sector-tag:hover {
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.15), rgba(79, 70, 229, 0.15));
  border-color: rgba(0, 212, 255, 0.3);
  transform: translateY(-2px);
}

/* Logo responsive scaling */
@media (max-width: 1023px) {
  :root {
    --header-height: 100px;
  }
  .logo img {
    width: 170px;
    height: 59px;
  }
}

@media (max-width: 639px) {
  :root {
    --header-height: 80px;
  }
  .logo img {
    width: 136px;
    height: 47px;
  }
  .site-footer .logo img {
    width: 120px;
    height: 41px;
  }
}