/* ============================================
   ESCALABLE - DESIGN SYSTEM v2.0
   Professional B2B Agency Design
   ============================================ */

/* ============================================
   1. CSS CUSTOM PROPERTIES (TOKENS)
   ============================================ */
:root {
  /* Colors - Professional Tech Palette */
  --color-primary: #0A8EA8;
  --color-primary-dark: #086B7E;
  --color-primary-light: #12B8D6;
  --color-accent: #00EB6D;
  --color-accent-hover: #00CC62;

  /* Neutral Colors */
  --color-white: #FFFFFF;
  --color-gray-50: #FAFAFA;
  --color-gray-100: #F5F5F5;
  --color-gray-200: #E5E5E5;
  --color-gray-300: #D4D4D4;
  --color-gray-400: #A3A3A3;
  --color-gray-500: #737373;
  --color-gray-600: #525252;
  --color-gray-700: #404040;
  --color-gray-800: #262626;
  --color-gray-900: #171717;

  /* Semantic Colors */
  --color-success: #22C55E;
  --color-error: #EF4444;
  --color-warning: #F59E0B;
  --color-info: #0EA5E9;

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  --gradient-accent: linear-gradient(135deg, var(--color-accent) 0%, var(--color-primary) 100%);
  --gradient-dark: linear-gradient(135deg, var(--color-gray-900) 0%, var(--color-gray-800) 100%);
  --gradient-subtle: linear-gradient(135deg, var(--color-gray-50) 0%, var(--color-white) 100%);

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

  /* Font Sizes */
  --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: 1.875rem;
  --text-4xl: 2.25rem;
  --text-5xl: 3rem;

  /* Font Weights */
  --font-normal: 400;
  --font-medium: 500;
  --font-semibold: 600;
  --font-bold: 700;
  --font-extrabold: 800;

  /* Line Heights */
  --leading-tight: 1.25;
  --leading-snug: 1.375;
  --leading-normal: 1.6;
  --leading-relaxed: 1.75;

  /* 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;

  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-sm: 0 2px 4px 0 rgba(0, 0, 0, 0.05), 0 1px 2px 0 rgba(0, 0, 0, 0.03);
  --shadow-md: 0 4px 6px 0 rgba(0, 0, 0, 0.07), 0 2px 4px 0 rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 10px 15px 0 rgba(0, 0, 0, 0.1), 0 4px 6px 0 rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px 0 rgba(0, 0, 0, 0.1), 0 10px 10px 0 rgba(0, 0, 0, 0.04);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slower: 500ms cubic-bezier(0.4, 0, 0.2, 1);

  /* Z-Index */
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-fixed: 500;
  --z-modal: 1000;
  --z-popover: 1100;
  --z-tooltip: 1200;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--color-gray-700);
  background-color: var(--color-white);
  min-height: 100vh;
  overflow-x: hidden;
}

/* Focus Styles for Accessibility */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

:focus:not(:focus-visible) {
  outline: none;
}

/* Skip to Main Content Link */
.skip-to-content {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--color-primary);
  color: var(--color-white);
  padding: var(--space-3) var(--space-5);
  text-decoration: none;
  z-index: 10000;
  border-radius: 0 0 var(--radius-md) 0;
  font-weight: var(--font-semibold);
  transition: top var(--transition-base);
}

.skip-to-content:focus {
  top: 0;
}

/* ============================================
   3. TYPOGRAPHY
   ============================================ */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-sans);
  font-weight: var(--font-bold);
  line-height: var(--leading-tight);
  color: var(--color-gray-900);
  margin-bottom: var(--space-4);
}

h1 {
  font-size: var(--text-5xl);
  letter-spacing: -0.02em;
}

h2 {
  font-size: var(--text-4xl);
  letter-spacing: -0.01em;
}

h3 {
  font-size: var(--text-3xl);
  letter-spacing: -0.01em;
}

h4 {
  font-size: var(--text-2xl);
  font-weight: var(--font-semibold);
}

h5 {
  font-size: var(--text-xl);
  font-weight: var(--font-semibold);
}

h6 {
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
  color: var(--color-gray-600);
}

p {
  margin-bottom: var(--space-4);
  color: var(--color-gray-600);
}

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

a:hover {
  color: var(--color-primary-dark);
}

/* ============================================
   4. LAYOUT
   ============================================ */
.container {
  width: 100%;
  max-width: 1280px;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-6);
  padding-right: var(--space-6);
}

.section {
  padding: var(--space-20) 0;
  position: relative;
}

.section-alt {
  background-color: var(--color-gray-50);
}

/* ============================================
   5. NAVBAR
   ============================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-fixed);
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-gray-200);
  transition: all var(--transition-base);
  padding: var(--space-4) 0;
}

.navbar-scrolled {
  box-shadow: var(--shadow-sm);
  padding: var(--space-3) 0;
}

.navbar-brand {
  font-size: var(--text-2xl);
  font-weight: var(--font-bold);
  color: var(--color-primary) !important;
  transition: all var(--transition-fast);
}

.navbar-brand:hover {
  transform: scale(1.02);
}

.nav-link {
  color: var(--color-gray-700) !important;
  font-weight: var(--font-medium);
  padding: var(--space-2) var(--space-4) !important;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  position: relative;
}

.nav-link::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: all var(--transition-base);
  transform: translateX(-50%);
}

.nav-link:hover {
  color: var(--color-primary) !important;
  background-color: rgba(10, 142, 168, 0.05);
}

.nav-link:hover::before {
  width: 80%;
}

.nav-link.active {
  color: var(--color-primary) !important;
  background-color: rgba(10, 142, 168, 0.05);
}

.nav-link.active::before {
  width: 80%;
}

/* ============================================
   6. BUTTONS
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-family: var(--font-sans);
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  line-height: var(--leading-tight);
  text-decoration: none;
  border-radius: var(--radius-lg);
  border: none;
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--gradient-primary);
  color: var(--color-white);
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-primary:active:not(:disabled) {
  transform: translateY(0);
}

.btn-outline {
  background: transparent;
  color: var(--color-white);
  border: 2px solid var(--color-white);
}

.btn-outline:hover {
  background: var(--color-white);
  color: var(--color-primary);
  transform: translateY(-2px);
}

.btn-outline-secondary {
  background: transparent;
  color: var(--color-gray-700);
  border: 2px solid var(--color-gray-300);
}

.btn-outline-secondary:hover {
  border-color: var(--color-gray-400);
  background-color: var(--color-gray-50);
}

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

.btn-sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
}

/* Button Ripple Effect */
.btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: width var(--transition-slow), height var(--transition-slow);
}

.btn:active::before {
  width: 200px;
  height: 200px;
}

/* ============================================
   7. HERO SECTION
   ============================================ */
.hero {
  padding-top: 100px;
  padding-bottom: var(--space-10);
  min-height: 55vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.hero[style*="background-image"] {
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
}

.hero[style*="background-image"]::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg,
      rgba(23, 23, 23, 0.92) 0%,
      rgba(64, 64, 64, 0.88) 50%,
      rgba(38, 38, 38, 0.92) 100%);
  z-index: 1;
}

/* Hero overlay fix - for pages with lighter backgrounds */
.hero::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(10, 30, 40, 0.35) 0%, rgba(10, 40, 50, 0.30) 50%, rgba(10, 50, 60, 0.35) 100%);
  z-index: 1;
  pointer-events: none;
}

.hero .container {
  position: relative;
  z-index: 2;
}

.hero[style*="background-image"]>.container {
  position: relative;
  z-index: 2;
}

.hero h1 {
  color: var(--color-white) !important;
  margin-bottom: var(--space-6);
}

.hero-lead {
  font-size: var(--text-xl);
  color: rgba(255, 255, 255, 0.95);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-8);
  max-width: 800px;
}

.hero .badge {
  display: inline-block;
  background: rgba(10, 142, 168, 0.2);
  color: var(--color-accent);
  border: 1px solid var(--color-accent);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-4);
}

/* ============================================
   8. CARDS
   ============================================ */
.card {
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
  overflow: hidden;
  height: 100%;
}

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

.card-body {
  padding: var(--space-8);
}

.card-title {
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  color: var(--color-gray-900);
  margin-bottom: var(--space-3);
}

.card-text {
  color: var(--color-gray-600);
  line-height: var(--leading-relaxed);
}

/* ============================================
   9. HERO STATS
   ============================================ */
.hero-stats {
  display: flex;
  gap: var(--space-8);
  flex-wrap: wrap;
  margin-top: var(--space-6);
}

.stat-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.stat-icon {
  width: 48px;
  height: 48px;
  background: rgba(0, 235, 109, 0.15);
  border: 2px solid var(--color-accent);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-xl);
  color: var(--color-accent);
  flex-shrink: 0;
}

.stat-text {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.stat-text strong {
  color: var(--color-white);
  font-size: var(--text-base);
}

.stat-text small {
  color: rgba(255, 255, 255, 0.8);
  font-size: var(--text-sm);
}

/* ============================================
   10. ICON BOX
   ============================================ */
.icon-box {
  width: 64px;
  height: 64px;
  background: var(--gradient-primary);
  color: var(--color-white);
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-5);
  font-size: var(--text-2xl);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
}

.card:hover .icon-box {
  transform: scale(1.1) rotate(5deg);
  box-shadow: var(--shadow-xl);
}

/* ============================================
   11. SOLUTION ITEMS
   ============================================ */
.solution-item {
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
}

.solution-icon {
  width: 48px;
  height: 48px;
  background: var(--gradient-primary);
  color: var(--color-white);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-xl);
  flex-shrink: 0;
  box-shadow: var(--shadow-sm);
}

.solution-item h5 {
  margin-bottom: var(--space-2);
  font-size: var(--text-lg);
}

/* ============================================
   11. FEATURE ITEMS
   ============================================ */
.feature-item {
  text-align: center;
  padding: var(--space-8);
  background: var(--color-white);
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-gray-200);
  transition: all var(--transition-base);
}

.feature-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary);
}

/* ============================================
   12. PROBLEM CARDS
   ============================================ */
.problem-card {
  background: var(--color-white);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  box-shadow: var(--shadow-sm);
  border-left: 4px solid var(--color-error);
  transition: all var(--transition-base);
}

.problem-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.problem-icon {
  width: 56px;
  height: 56px;
  background: rgba(239, 68, 68, 0.1);
  color: var(--color-error);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-2xl);
  margin-bottom: var(--space-4);
}

/* ============================================
   12. SERVICE CARDS
   ============================================ */
.service-card {
  background: var(--color-white);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  box-shadow: var(--shadow-sm);
  border: 2px solid transparent;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--gradient-primary);
  transform: scaleX(0);
  transition: transform var(--transition-base);
}

.service-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
  border-color: var(--color-primary);
}

.service-card:hover::before {
  transform: scaleX(1);
}

.service-icon {
  width: 72px;
  height: 72px;
  background: var(--gradient-primary);
  color: var(--color-white);
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-3xl);
  margin-bottom: var(--space-5);
  box-shadow: var(--shadow-md);
}

/* ============================================
   13. PROCESS STEPS
   ============================================ */
.process-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-6);
}

.process-step {
  background: var(--color-white);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  box-shadow: var(--shadow-sm);
  position: relative;
  transition: all var(--transition-base);
}

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

.step-number {
  position: absolute;
  top: -20px;
  left: var(--space-6);
  width: 56px;
  height: 56px;
  background: var(--gradient-primary);
  color: var(--color-white);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-xl);
  font-weight: var(--font-extrabold);
  box-shadow: var(--shadow-lg);
}

/* ============================================
   14. RESULT CARDS
   ============================================ */
.result-card {
  background: var(--color-white);
  border-radius: var(--radius-xl);
  padding: var(--space-10);
  text-align: center;
  box-shadow: var(--shadow-sm);
  border: 2px solid transparent;
  transition: all var(--transition-base);
}

.result-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
  border-color: var(--color-primary);
}

.result-icon {
  width: 64px;
  height: 64px;
  background: var(--gradient-accent);
  color: var(--color-white);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-2xl);
  margin: 0 auto var(--space-5);
}

.result-number {
  font-size: var(--text-5xl);
  font-weight: var(--font-extrabold);
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: var(--space-2);
}

.result-label {
  font-size: var(--text-xl);
  font-weight: var(--font-semibold);
  color: var(--color-gray-900);
  margin-bottom: var(--space-4);
}

/* ============================================
   15. STATS GRID
   ============================================ */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
}

.stat-card {
  background: var(--color-white);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  text-align: center;
  box-shadow: var(--shadow-sm);
  border: 2px solid transparent;
  transition: all var(--transition-base);
}

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

.stat-number {
  font-size: var(--text-5xl);
  font-weight: var(--font-extrabold);
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: var(--space-3);
}

.stat-label {
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
  color: var(--color-gray-900);
  margin-bottom: var(--space-2);
}

/* ============================================
   16. PORTFOLIO GRID
   ============================================ */
.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: var(--space-6);
}

.portfolio-item {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-xl);
  background: var(--color-white);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
}

.portfolio-item:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}

.portfolio-item a {
  display: block;
  text-decoration: none;
  color: inherit;
  position: relative;
  z-index: 2;
}

.portfolio-item img {
  width: 100%;
  height: auto;
  aspect-ratio: 4/3;
  object-fit: cover;
  display: block;
  transition: transform var(--transition-base);
}

.portfolio-item:hover img {
  transform: scale(1.05);
}

.portfolio-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(to bottom, transparent 50%, rgba(23, 23, 23, 0.8) 100%);
  opacity: 0;
  transition: opacity var(--transition-base);
  z-index: 1;
  pointer-events: none;
}

.portfolio-item:hover::before {
  opacity: 1;
}

/* ============================================
   17. SERVICE FILTERS
   ============================================ */
.service-filters {
  display: flex;
  justify-content: center;
  gap: var(--space-3);
  flex-wrap: wrap;
  margin-bottom: var(--space-10);
  padding: var(--space-4);
  background: var(--color-white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
}

.filter-btn {
  padding: var(--space-3) var(--space-6);
  background: var(--color-gray-100);
  border: 2px solid transparent;
  border-radius: var(--radius-lg);
  color: var(--color-gray-700);
  font-weight: var(--font-semibold);
  transition: all var(--transition-base);
  cursor: pointer;
  font-size: var(--text-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.filter-btn:hover {
  background: var(--color-gray-200);
  border-color: var(--color-gray-300);
}

.filter-btn.active {
  background: var(--gradient-primary);
  border-color: var(--color-primary);
  color: var(--color-white);
}

/* ============================================
   18. FORMS
   ============================================ */
.form-label {
  display: block;
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--color-gray-700);
  margin-bottom: var(--space-2);
}

.form-control {
  display: block;
  width: 100%;
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--color-gray-900);
  background-color: var(--color-white);
  border: 2px solid var(--color-gray-300);
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
}

.form-control:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(10, 142, 168, 0.1);
  outline: none;
}

.form-control::placeholder {
  color: var(--color-gray-400);
}

.form-floating {
  position: relative;
  margin-bottom: var(--space-4);
}

.form-floating>.form-control {
  padding: var(--space-5) var(--space-4);
}

.form-floating>label {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  padding: var(--space-5) var(--space-4);
  pointer-events: none;
  border: 2px solid transparent;
  transform-origin: 0 0;
  transition: all var(--transition-fast);
}

.form-floating>label::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  right: var(--space-4);
  border-left: 2px solid transparent;
  transition: all var(--transition-fast);
}

/* ============================================
   19. CHECKLIST
   ============================================ */
.checklist {
  list-style: none;
  padding: 0;
}

.checklist li {
  padding-left: var(--space-6);
  margin-bottom: var(--space-3);
  position: relative;
  color: var(--color-gray-600);
}

.checklist li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-weight: var(--font-bold);
  font-size: var(--text-lg);
}

/* ============================================
   20. ACCORDION
   ============================================ */
.accordion-item {
  border: 2px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-4);
  overflow: hidden;
}

.accordion-button {
  padding: var(--space-4) var(--space-6);
  font-weight: var(--font-semibold);
  background: var(--color-white);
  transition: all var(--transition-base);
}

.accordion-button:not(.collapsed) {
  background: rgba(10, 142, 168, 0.05);
  color: var(--color-primary);
}

.accordion-button:focus {
  box-shadow: 0 0 0 3px rgba(10, 142, 168, 0.1);
}

.accordion-body {
  padding: var(--space-6);
}

/* ============================================
   21. FOOTER
   ============================================ */
footer {
  background: var(--color-gray-900);
  color: var(--color-gray-400);
  padding: var(--space-16) 0 var(--space-8);
  border-top: 1px solid var(--color-gray-800);
}

footer h5 {
  color: var(--color-white);
  margin-bottom: var(--space-5);
  font-size: var(--text-lg);
}

footer a {
  color: var(--color-gray-400);
  transition: all var(--transition-fast);
  display: block;
  margin-bottom: var(--space-2);
}

footer a:hover {
  color: var(--color-accent);
  transform: translateX(var(--space-2));
}

.social-links {
  display: flex;
  gap: var(--space-4);
  margin-top: var(--space-4);
}

.social-links a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-full);
  color: var(--color-gray-400);
  font-size: var(--text-lg);
  transition: all var(--transition-base);
}

.social-links a:hover {
  background: var(--color-primary);
  color: var(--color-white);
  transform: translateY(-2px);
}

.copyright {
  margin-top: var(--space-8);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-gray-800);
  text-align: center;
  font-size: var(--text-sm);
}

.copyright a {
  color: var(--color-gray-400);
  display: inline;
}

.copyright a:hover {
  color: var(--color-accent);
  transform: none;
}

/* ============================================
   22. BADGES
   ============================================ */
.badge {
  display: inline-flex;
  align-items: center;
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: var(--radius-md);
  gap: var(--space-2);
}

.badge-secondary {
  background: var(--color-gray-100);
  color: var(--color-gray-700);
  border: 1px solid var(--color-gray-200);
}

/* ============================================
   23. UTILITIES
   ============================================ */
.bg-primary-custom {
  background: var(--gradient-accent);
}

.text-primary {
  color: var(--color-primary) !important;
}

.text-muted {
  color: var(--color-gray-500) !important;
}

.d-flex {
  display: flex;
}

.gap-2 {
  gap: var(--space-2);
}

.gap-3 {
  gap: var(--space-3);
}

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

.gap-5 {
  gap: var(--space-5);
}

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

.justify-content-between {
  justify-content: space-between;
}

.align-items-center {
  align-items: center;
}

.align-items-start {
  align-items: flex-start;
}

.align-items-stretch {
  align-items: stretch;
}

.text-center {
  text-align: center;
}

.text-end {
  text-align: right;
}

.text-start {
  text-align: left;
}

.mt-4 {
  margin-top: var(--space-4);
}

.mt-5 {
  margin-top: var(--space-5);
}

.mb-2 {
  margin-bottom: var(--space-2);
}

.mb-3 {
  margin-bottom: var(--space-3);
}

.mb-4 {
  margin-bottom: var(--space-4);
}

.mb-5 {
  margin-bottom: var(--space-5);
}

.ms-auto {
  margin-left: auto;
}

.ms-lg-3 {
  margin-left: var(--space-3);
}

.w-100 {
  width: 100%;
}

.text-decoration-none {
  text-decoration: none;
}

/* ============================================
   24. ANIMATIONS
   ============================================ */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in-up {
  animation: fadeInUp 0.6s ease-out forwards;
}

/* ============================================
   25. RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 1024px) {
  .container {
    padding-left: var(--space-4);
    padding-right: var(--space-4);
  }

  h1 {
    font-size: var(--text-4xl);
  }

  h2 {
    font-size: var(--text-3xl);
  }

  h3 {
    font-size: var(--text-2xl);
  }
}

@media (max-width: 768px) {
  .section {
    padding: var(--space-16) 0;
  }

  /* Reduce logo on mobile */
  .navbar-brand img {
    height: 40px !important;
    max-height: 40px !important;
  }

  .hero {
    padding-top: 110px;
    padding-bottom: var(--space-8);
    min-height: 45vh;
  }

  /* Hero image hidden on mobile */
  .hero-image {
    display: none;
  }

  /* Hero stats responsive */
  .hero-stats {
    flex-direction: column;
    gap: var(--space-4);
  }

  .stat-item {
    justify-content: flex-start;
  }

  h1 {
    font-size: var(--text-3xl);
  }

  h2 {
    font-size: var(--text-2xl);
  }

  .portfolio-grid {
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--space-4);
  }

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

  .process-steps {
    grid-template-columns: 1fr;
  }

  .service-filters {
    flex-direction: column;
  }

  .filter-btn {
    width: 100%;
  }

  /* CTA sections responsive */
  .cta-diagnostico-premium h2 {
    font-size: var(--text-2xl) !important;
  }

  .cta-diagnostico-premium p {
    font-size: var(--text-base) !important;
  }
}

@media (max-width: 480px) {
  .container {
    padding-left: var(--space-3);
    padding-right: var(--space-3);
  }

  h1 {
    font-size: var(--text-2xl);
  }

  .btn-lg {
    width: 100%;
  }

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

  .hero {
    padding-top: 100px;
  }
}

/* ============================================
   26. CATEGORY CARDS
   ============================================ */
.category-card {
  background: var(--color-white);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
  border: 2px solid transparent;
  transition: all var(--transition-base);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.category-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--gradient-primary);
  transform: scaleX(0);
  transition: transform var(--transition-base);
}

.category-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
  border-color: var(--color-primary);
}

.category-card:hover::before {
  transform: scaleX(1);
}

.category-icon {
  width: 72px;
  height: 72px;
  background: var(--gradient-primary);
  color: var(--color-white);
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-3xl);
  margin-bottom: var(--space-4);
  transition: all var(--transition-base);
}

.category-card:hover .category-icon {
  transform: scale(1.15) rotate(5deg);
  box-shadow: var(--shadow-xl);
}

.category-card h5 {
  margin-bottom: var(--space-2);
  font-weight: var(--font-bold);
  color: var(--color-gray-900);
}

.category-card p {
  color: var(--color-gray-600);
  line-height: var(--leading-relaxed);
}

.category-card .badge {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
}

/* ============================================
   27. ICON GRADIENTES
   ============================================ */
.icon-gradient-marketing {
  background: linear-gradient(135deg, #22C55E 0%, #16A34A 100%);
}

.icon-gradient-data {
  background: linear-gradient(135deg, #0EA5E9 0%, #06B6D4 100%);
}

.icon-gradient-dev {
  background: linear-gradient(135deg, #3B82F6 0%, #2563EB 100%);
}

.icon-gradient-tech {
  background: linear-gradient(135deg, #F59E0B 0%, #D97706 100%);
}

.icon-gradient-design {
  background: linear-gradient(135deg, #8B5CF6 0%, #7C3AED 100%);
}

.icon-gradient-media {
  background: linear-gradient(135deg, #EC4899 0%, #DB2777 100%);
}

/* ============================================
   28. ACCESSIBILITY
   ============================================ */
@media (prefers-reduced-motion: reduce) {

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

/* High Contrast Mode */
@media (prefers-contrast: high) {
  :root {
    --color-gray-100: #E0E0E0;
    --color-gray-200: #C0C0C0;
  }
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
  /* Uncomment to enable dark mode
  body {
    background-color: var(--color-gray-900);
    color: var(--color-gray-200);
  }
  
  .card {
    background: var(--color-gray-800);
    border-color: var(--color-gray-700);
  }
  */
}

/* ============================================
   29. CONTACT OPTION CARDS
   ============================================ */
.contact-option-card {
  transition: all 0.3s ease !important;
}

.contact-option-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.12);
  border-color: var(--color-primary) !important;
}

.contact-option-card:hover .bi {
  transform: scale(1.1);
}

/* ============================================
   30. MISSION VISION CARDS
   ============================================ */
.mission-vision-card {
  background: var(--color-white);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  box-shadow: var(--shadow-sm);
  border: 2px solid transparent;
  transition: all var(--transition-base);
}

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

/* ============================================
   31. VALUE, APPROACH, PROCESS, TECH CARDS
   ============================================ */
.value-card,
.approach-card,
.process-card,
.tech-card {
  background: var(--color-white);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
  border: 2px solid transparent;
  transition: all var(--transition-base);
}

.value-card:hover,
.approach-card:hover,
.process-card:hover,
.tech-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary);
}

/* ============================================
   32. SERVICE TABS
   ============================================ */
#serviciosTab .nav-link {
  background: var(--color-gray-100);
  color: var(--color-gray-700);
  border: 2px solid transparent;
  transition: all var(--transition-base);
  padding: var(--space-3) var(--space-6);
}

#serviciosTab .nav-link:hover {
  background: rgba(10, 142, 168, 0.1);
  color: var(--color-primary);
  border-color: var(--color-primary);
}

#serviciosTab .nav-link.active {
  background: var(--gradient-primary);
  color: var(--color-white);
  border-color: transparent;
  box-shadow: var(--shadow-md);
}

#serviciosTab .nav-link i {
  transition: transform var(--transition-base);
}

#serviciosTab .nav-link:hover i,
#serviciosTab .nav-link.active i {
  transform: scale(1.1);
}

.tab-pane {
  animation: fadeIn 0.3s ease-in-out;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ============================================
   CTA BUTTON ANIMATIONS
   ============================================ */

/* Interactive hover effect for all CTA buttons */
section a[href*="diagnostico.html"],
section a[href*="contacto.html"],
section a[href*="servicios.html"],
.btn-primary,
.btn-lg {
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  transform: translateZ(0);
}

/* Jump/Bounce effect on hover */
section a[href*="diagnostico.html"]:hover,
section a[href*="contacto.html"]:hover,
section a[href*="servicios.html"]:hover,
.btn-primary:hover,
.btn-lg:hover {
  transform: translateY(-4px) scale(1.02);
  box-shadow: 0 20px 40px rgba(0, 235, 109, 0.3) !important;
}

/* Pulse animation for CTA buttons */
@keyframes ctaPulse {

  0%,
  100% {
    transform: scale(1);
  }

  50% {
    transform: scale(1.03);
  }
}

/* Subtle continuous pulse for standout CTAs */
.btn-primary:not(:hover):not(:active),
section a[href*="diagnostico.html"]:not(:hover):not(:active) {
  animation: ctaPulse 3s ease-in-out infinite;
}

/* Enhanced hover states */
.btn-primary:active,
.btn-lg:active,
section a[href*="diagnostico.html"]:active,
section a[href*="contacto.html"]:active {
  transform: translateY(-2px) scale(0.98);
  box-shadow: 0 10px 25px rgba(0, 235, 109, 0.2) !important;
}

/* Smooth transition for all interactive elements */
.btn,
a {
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================================
   PORTFOLIO COMPONENTS
   ============================================ */

/* Portfolio Filter Tabs - Modern Design */
.portfolio-filter-tabs {
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.portfolio-filter-tabs .filter-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  background: var(--color-gray-100);
  border: 2px solid transparent;
  border-radius: 50px;
  color: var(--color-gray-700);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all 0.3s ease;
}

.portfolio-filter-tabs .filter-btn i {
  font-size: 1.1rem;
}

.portfolio-filter-tabs .filter-btn:hover {
  background: var(--color-gray-200);
  border-color: var(--color-gray-300);
  transform: translateY(-2px);
}

.portfolio-filter-tabs .filter-btn.active {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  border-color: var(--color-primary);
  color: white;
  box-shadow: 0 4px 15px rgba(10, 142, 168, 0.3);
}

@media (max-width: 768px) {
  .portfolio-filter-tabs {
    gap: 0.5rem;
  }

  .portfolio-filter-tabs .filter-btn {
    padding: 0.6rem 1rem;
    font-size: 0.85rem;
  }
}

/* Lightbox Styles */
.lightbox-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.95);
  z-index: 10000;
  cursor: pointer;
  animation: fadeInLightbox 0.3s ease;
}

.lightbox-overlay.active {
  display: flex;
  align-items: center;
  justify-content: center;
}

.lightbox-content {
  position: relative;
  max-width: 90%;
  max-height: 90%;
  animation: zoomInLightbox 0.3s ease;
}

.lightbox-content img {
  max-width: 100%;
  max-height: 85vh;
  object-fit: contain;
  border-radius: 8px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.lightbox-close {
  position: absolute;
  top: -50px;
  right: 0;
  background: none;
  border: none;
  color: white;
  font-size: 2.5rem;
  cursor: pointer;
  transition: transform 0.2s;
  padding: 0;
  line-height: 1;
}

.lightbox-close:hover {
  transform: scale(1.2);
}

.lightbox-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255, 255, 255, 0.15);
  border: none;
  color: white;
  font-size: 2rem;
  cursor: pointer;
  padding: 1rem 1.25rem;
  border-radius: 50%;
  transition: all 0.2s;
  backdrop-filter: blur(10px);
}

.lightbox-nav:hover {
  background: rgba(255, 255, 255, 0.25);
  transform: translateY(-50%) scale(1.1);
}

.lightbox-prev {
  left: 20px;
}

.lightbox-next {
  right: 20px;
}

.lightbox-counter {
  position: absolute;
  bottom: -40px;
  left: 50%;
  transform: translateX(-50%);
  color: rgba(255, 255, 255, 0.8);
  font-size: 0.9rem;
}

@keyframes fadeInLightbox {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

@keyframes zoomInLightbox {
  from {
    transform: scale(0.9);
    opacity: 0;
  }

  to {
    transform: scale(1);
    opacity: 1;
  }
}

/* Video Portfolio Styles */
.video-item {
  position: relative;
  cursor: pointer;
  overflow: hidden;
  border-radius: 8px;
}

.video-thumbnail {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.video-item:hover .video-thumbnail {
  transform: scale(1.05);
}

.play-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.3s ease;
}

.video-item:hover .play-overlay {
  background: rgba(0, 0, 0, 0.4);
}

.play-button {
  width: 70px;
  height: 70px;
  background: rgba(255, 255, 255, 0.95);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.video-item:hover .play-button {
  transform: scale(1.1);
  box-shadow: 0 6px 30px rgba(0, 0, 0, 0.4);
}

.play-button i {
  color: var(--color-primary);
  font-size: 1.75rem;
  margin-left: 4px;
}

/* Video Modal */
.video-modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.95);
  z-index: 10001;
  align-items: center;
  justify-content: center;
  animation: fadeInLightbox 0.3s ease;
  padding: 20px;
}

.video-modal.active {
  display: flex;
}

.video-modal-content {
  position: relative;
  width: 90%;
  max-width: 1200px;
  height: auto;
  max-height: 85vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.video-modal-close {
  position: absolute;
  top: -50px;
  right: 0;
  background: none;
  border: none;
  color: white;
  font-size: 2.5rem;
  cursor: pointer;
  transition: transform 0.2s;
  padding: 0;
  line-height: 1;
  z-index: 10;
}

.video-modal-close:hover {
  transform: scale(1.2);
}

#video-container {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.video-modal iframe {
  width: 100%;
  height: 0;
  padding-bottom: 56.25%;
  /* 16:9 aspect ratio */
  border-radius: 8px;
  border: none;
}

.video-modal video {
  max-width: 100%;
  max-height: 85vh;
  width: auto;
  height: auto;
  border-radius: 8px;
  border: none;
  background: #000;
}

/* Local Video Thumbnail */
.video-thumb {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 8px;
  pointer-events: none;
  background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
}

.local-video {
  position: relative;
  overflow: hidden;
  border-radius: 8px;
  background: #1a1a2e;
  aspect-ratio: 4/3;
}

.local-video:hover .video-thumb {
  transform: scale(1.05);
}

.local-video .video-thumb {
  transition: transform 0.3s ease;
}

/* Website Preview Styles */
.website-item {
  cursor: pointer;
  overflow: hidden;
  border-radius: 8px;
  transition: transform 0.3s ease;
  background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
}

.website-item:hover {
  transform: scale(1.02);
}

.website-preview {
  position: relative;
  width: 100%;
  height: 100%;
  aspect-ratio: 4/3;
  display: flex;
  align-items: center;
  justify-content: center;
}

.website-thumbnail {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  display: block;
}

.website-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(180deg, rgba(0, 0, 0, 0.3) 0%, rgba(0, 0, 0, 0.8) 100%);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-end;
  padding-bottom: 1.5rem;
  gap: 0.5rem;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.website-item:hover .website-overlay {
  opacity: 1;
}

.browser-frame {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  padding: 0.5rem 1rem;
  border-radius: 20px;
}

.browser-dots {
  display: flex;
  gap: 0.35rem;
}

.browser-dots span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #ddd;
}

.browser-dots span:nth-child(1) {
  background: #ff5f57;
}

.browser-dots span:nth-child(2) {
  background: #ffbd2e;
}

.browser-dots span:nth-child(3) {
  background: #28c840;
}

.browser-url {
  font-size: 0.75rem;
  color: #fff;
  font-weight: 500;
  opacity: 0.9;
}

.visit-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: #fff;
  color: var(--color-primary);
  padding: 0.75rem 1.5rem;
  border-radius: 25px;
  font-weight: 600;
  font-size: 0.9rem;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.visit-btn:hover {
  transform: scale(1.05);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

.visit-btn i {
  font-size: 1.1rem;
}

/* Portfolio Items - Prevent selection and drag */
.portfolio-item {
  cursor: pointer;
  user-select: none;
  -webkit-user-select: none;
}

.portfolio-item img {
  pointer-events: none;
  user-select: none;
  -webkit-user-drag: none;
}

/* Botón Agenda Hoy del menú */
.btn-agenda {
  background: #1f7a5b !important;
  color: #fff !important;
  border: none;
  font-weight: 600;
}

.btn-agenda:hover {
  background: #165c45 !important;
  transform: translateY(-1px);
}