/* CSS Variables */
:root {
  --color-primary: #7c3aed;
  --color-primary-light: #a855f7;
  --color-primary-dark: #6d28d9;
  --color-accent: #06b6d4;
  --color-accent-light: #22d3ee;
  --color-accent-dark: #0891b2;
  --color-dark: #0a0e17;
  --color-dark-light: #1e293b;
  --color-light: #f5f7fb;
  --color-light-dark: #e2e8f0;
  --color-text: #0f172a;
  --color-text-light: #475569;
  --color-text-muted: #64748b;
  --color-white: #ffffff;
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-error: #ef4444;

  --font-heading: "Inter", system-ui, sans-serif;
  --font-body: "Source Sans 3", system-ui, sans-serif;

  --border-radius: 16px;
  --border-radius-sm: 8px;
  --border-radius-lg: 24px;

  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);

  --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Dark Mode Variables */
[data-theme="dark"] {
  --color-light: #0f172a;
  --color-light-dark: #1e293b;
  --color-text: #f1f5f9;
  --color-text-light: #cbd5e1;
  --color-text-muted: #94a3b8;
  --color-white: #1e293b;
}

/* Base Styles */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  font-weight: 400;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-light);
  transition: var(--transition);
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-text);
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
}
h2 {
  font-size: clamp(2rem, 4vw, 3rem);
}
h3 {
  font-size: clamp(1.5rem, 3vw, 2rem);
}
h4 {
  font-size: 1.25rem;
}

p {
  margin-bottom: 1rem;
  color: var(--color-text-light);
}

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

/* Layout */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1rem;
}

.section {
  padding: 5rem 0;
}

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

.section-header {
  text-align: center;
  margin-bottom: 4rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.section-title {
  margin-bottom: 1rem;
}

.section-subtitle {
  font-size: 1.125rem;
  color: var(--color-text-muted);
}

/* Header */
.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-light-dark);
  transition: var(--transition);
}

[data-theme="dark"] .header {
  background: rgba(15, 23, 42, 0.95);
  border-bottom-color: var(--color-dark-light);
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
}

.logo-text {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-primary);
}

.nav {
  display: flex;
  gap: 2rem;
}

.nav-link {
  text-decoration: none;
  color: var(--color-text);
  font-weight: 500;
  transition: var(--transition);
  position: relative;
}

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

.nav-link.active::after {
  content: "";
  position: absolute;
  bottom: -0.5rem;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--color-primary);
  border-radius: 1px;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.dark-mode-toggle {
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  border-radius: var(--border-radius-sm);
  transition: var(--transition);
}

.dark-mode-toggle:hover {
  background: var(--color-light-dark);
}

.toggle-icon {
  font-size: 1.25rem;
}

.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  flex-direction: column;
  gap: 4px;
}

.hamburger {
  width: 24px;
  height: 2px;
  background: var(--color-text);
  transition: var(--transition);
}

.hamburger::before,
.hamburger::after {
  content: "";
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  transition: var(--transition);
  margin: 4px 0;
}

/* Mobile Navigation */
.mobile-nav-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 9999;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
}

.mobile-nav-overlay.active {
  opacity: 1;
  visibility: visible;
}

.mobile-nav {
  position: absolute;
  right: 0;
  top: 0;
  bottom: 0;
  width: 280px;
  background: var(--color-white);
  padding: 2rem;
  transform: translateX(100%);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  padding-top: 5rem;
}

.mobile-nav-overlay.active .mobile-nav {
  transform: translateX(0);
}

.mobile-nav-link {
  text-decoration: none;
  color: var(--color-text);
  font-weight: 500;
  font-size: 1.125rem;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--color-light-dark);
  transition: var(--transition);
}

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

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: var(--border-radius);
  font-weight: 600;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  font-size: 1rem;
  line-height: 1;
  white-space: nowrap;
}

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

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

.btn-accent {
  background: var(--color-accent);
  color: white;
}

.btn-accent:hover {
  background: var(--color-accent-dark);
  transform: translateY(-1px);
}

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

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

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

/* Hero Section */
.hero {
  padding: 8rem 0 6rem;
  background: linear-gradient(135deg, var(--color-light) 0%, var(--color-white) 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="%23E2E8F0" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
  opacity: 0.5;
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-title {
  margin-bottom: 1.5rem;
}

.highlight {
  background: linear-gradient(120deg, var(--color-primary), var(--color-accent));
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  position: relative;
}

.hero-subtitle {
  font-size: 1.25rem;
  margin-bottom: 2rem;
  color: var(--color-text-light);
}

.trust-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2rem;
}

.trust-badge {
  background: rgba(124, 58, 237, 0.1);
  color: var(--color-primary);
  padding: 0.5rem 1rem;
  border-radius: var(--border-radius-lg);
  font-weight: 600;
  font-size: 0.9rem;
}

/* Audit Tool */
.audit-card {
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--border-radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-xl);
}

[data-theme="dark"] .audit-card {
  background: rgba(30, 41, 59, 0.8);
  border-color: rgba(255, 255, 255, 0.1);
}

.audit-card h3 {
  margin-bottom: 0.5rem;
  color: var(--color-text);
}

.audit-card p {
  margin-bottom: 1.5rem;
  color: var(--color-text-muted);
}

.audit-form {
  margin-bottom: 1.5rem;
}

.input-group {
  margin-bottom: 1rem;
}

.input-group input,
.input-group select,
.input-group textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 2px solid var(--color-light-dark);
  border-radius: var(--border-radius);
  font-size: 1rem;
  transition: var(--transition);
  background: var(--color-white);
  color: var(--color-text);
}

.input-group input:focus,
.input-group select:focus,
.input-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.1);
}

.audit-result {
  animation: slideUp 0.3s ease-out;
}

.score-display {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
  padding: 1.5rem;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  border-radius: var(--border-radius);
  color: white;
}

.score-circle {
  display: flex;
  align-items: baseline;
  gap: 0.25rem;
}

.score-number {
  font-size: 3rem;
  font-weight: 700;
  font-family: var(--font-heading);
}

.score-label {
  font-size: 1.5rem;
  opacity: 0.8;
}

.score-text h4 {
  color: white;
  margin-bottom: 0.5rem;
}

.score-text p {
  color: rgba(255, 255, 255, 0.9);
  margin: 0;
}

.recommendations {
  background: var(--color-light);
  border-radius: var(--border-radius);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}

.recommendations h4 {
  margin-bottom: 1rem;
}

.recommendations ul {
  list-style: none;
}

.recommendations li {
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--color-light-dark);
}

.recommendations li:last-child {
  border-bottom: none;
}

/* Services Grid */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
}

.service-card {
  background: var(--color-white);
  border-radius: var(--border-radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow);
  transition: var(--transition);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

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

.service-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
  display: block;
}

.service-card h3 {
  margin-bottom: 1rem;
  color: var(--color-text);
}

.service-card p {
  margin-bottom: 1.5rem;
  color: var(--color-text-light);
}

.service-card ul {
  list-style: none;
}

.service-card li {
  padding: 0.5rem 0;
  color: var(--color-text-light);
}

.service-card li::before {
  content: "✓ ";
  color: var(--color-success);
  font-weight: 600;
  margin-right: 0.5rem;
}

/* Case Studies */
.case-studies-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
}

.case-study-card {
  background: var(--color-white);
  border-radius: var(--border-radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow);
  transition: var(--transition);
  cursor: pointer;
}

.case-study-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

.case-study-header {
  display: flex;
  justify-content: between;
  align-items: center;
  margin-bottom: 2rem;
}

.case-study-header h3 {
  color: var(--color-text);
  flex: 1;
}

.case-study-period {
  background: var(--color-accent);
  color: white;
  padding: 0.25rem 0.75rem;
  border-radius: var(--border-radius-lg);
  font-size: 0.875rem;
  font-weight: 600;
}

.metrics-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 2rem;
}

.metric {
  text-align: center;
  padding: 1rem;
  background: var(--color-light);
  border-radius: var(--border-radius);
}

.metric-value {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
  font-family: var(--font-heading);
}

.metric-label {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-top: 0.25rem;
}

/* ROI Calculator */
.roi-calculator {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  background: var(--color-white);
  border-radius: var(--border-radius-lg);
  padding: 3rem;
  box-shadow: var(--shadow-lg);
}

.calculator-inputs {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.input-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
  color: var(--color-text);
}

.calculator-results {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.result-card {
  background: var(--color-light);
  border-radius: var(--border-radius);
  padding: 1.5rem;
  text-align: center;
}

.result-title {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-bottom: 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

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

.roi-positive {
  color: var(--color-success);
}

/* Pricing */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
}

.pricing-card {
  background: var(--color-white);
  border-radius: var(--border-radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow);
  transition: var(--transition);
  position: relative;
}

.pricing-featured {
  transform: scale(1.05);
  border: 2px solid var(--color-primary);
}

.pricing-badge {
  position: absolute;
  top: -0.75rem;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-primary);
  color: white;
  padding: 0.5rem 1.5rem;
  border-radius: var(--border-radius-lg);
  font-size: 0.875rem;
  font-weight: 600;
}

.pricing-header {
  text-align: center;
  margin-bottom: 2rem;
}

.pricing-header h3 {
  margin-bottom: 0.5rem;
}

.price {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-primary);
  font-family: var(--font-heading);
  margin-bottom: 0.5rem;
}

.price span {
  font-size: 1rem;
  color: var(--color-text-muted);
  font-weight: 400;
}

.features-list {
  list-style: none;
  margin-bottom: 2rem;
}

.features-list li {
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--color-light-dark);
  font-weight: 500;
}

.features-list li:last-child {
  border-bottom: none;
}

.feature-included {
  color: var(--color-text);
}

.feature-excluded {
  color: var(--color-text-muted);
}

/* Process Timeline */
.process-timeline {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  position: relative;
}

.process-step {
  background: var(--color-white);
  border-radius: var(--border-radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow);
  transition: var(--transition);
  position: relative;
}

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

.step-number {
  width: 3rem;
  height: 3rem;
  background: var(--color-primary);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.25rem;
  margin-bottom: 1rem;
  font-family: var(--font-heading);
}

.step-content h3 {
  margin-bottom: 1rem;
  color: var(--color-text);
}

.step-tooltip {
  position: relative;
}

.tooltip-content {
  visibility: hidden;
  opacity: 0;
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-dark);
  color: white;
  padding: 0.75rem;
  border-radius: var(--border-radius);
  font-size: 0.875rem;
  white-space: nowrap;
  transition: var(--transition);
  z-index: 10;
}

.process-step:hover .tooltip-content {
  visibility: visible;
  opacity: 1;
}

.tooltip-content::after {
  content: "";
  position: absolute;
  top: 100%;
  left: 50%;
  margin-left: -5px;
  border-width: 5px;
  border-style: solid;
  border-color: var(--color-dark) transparent transparent transparent;
}

/* Testimonials */
.testimonials-carousel {
  position: relative;
  max-width: 800px;
  margin: 0 auto 2rem;
}

.testimonial-card {
  background: var(--color-white);
  border-radius: var(--border-radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow);
  display: none;
  animation: fadeIn 0.5s ease-in;
}

.testimonial-card.active {
  display: block;
}

.testimonial-content {
  margin-bottom: 2rem;
}

.stars {
  font-size: 1.25rem;
  margin-bottom: 1rem;
}

.testimonial-content p {
  font-size: 1.125rem;
  font-style: italic;
  color: var(--color-text);
  margin: 0;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.author-name {
  font-weight: 600;
  color: var(--color-text);
}

.author-position {
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

.carousel-controls {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1rem;
}

.carousel-btn {
  background: var(--color-white);
  border: 2px solid var(--color-light-dark);
  border-radius: 50%;
  width: 3rem;
  height: 3rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  cursor: pointer;
  transition: var(--transition);
}

.carousel-btn:hover {
  background: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
}

.carousel-dots {
  display: flex;
  gap: 0.5rem;
}

.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-light-dark);
  cursor: pointer;
  transition: var(--transition);
}

.dot.active {
  background: var(--color-primary);
}

/* FAQ */
.faq-accordion {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: var(--color-white);
  border-radius: var(--border-radius);
  margin-bottom: 1rem;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.faq-question {
  width: 100%;
  padding: 1.5rem;
  background: none;
  border: none;
  text-align: left;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-text);
  transition: var(--transition);
}

.faq-question:hover {
  background: var(--color-light);
}

.faq-icon {
  font-size: 1.5rem;
  transition: var(--transition);
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: var(--transition-slow);
}

.faq-item.active .faq-answer {
  max-height: 200px;
}

.faq-answer p {
  padding: 0 1.5rem 1.5rem;
  color: var(--color-text-light);
  margin: 0;
}

/* Blog */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
}

.blog-card {
  background: var(--color-white);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
  cursor: pointer;
}

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

.blog-image {
  width: 100%;
  height: 200px;
  overflow: hidden;
}

.blog-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.blog-card:hover .blog-image img {
  transform: scale(1.05);
}

.blog-content {
  padding: 1.5rem;
}

.blog-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.blog-date {
  color: var(--color-text-muted);
  font-size: 0.875rem;
}

.blog-tag {
  padding: 0.25rem 0.75rem;
  border-radius: var(--border-radius-lg);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.tag-technical {
  background: var(--color-primary);
  color: white;
}

.tag-content {
  background: var(--color-accent);
  color: white;
}

.tag-local {
  background: var(--color-success);
  color: white;
}

.blog-content h3 {
  margin-bottom: 1rem;
  color: var(--color-text);
}

.blog-content p {
  color: var(--color-text-light);
  margin: 0;
}

/* Contact Form */
.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
}

.contact-info h3 {
  margin-bottom: 1.5rem;
  color: var(--color-text);
}

.benefits-list {
  list-style: none;
  margin-bottom: 2rem;
}

.benefits-list li {
  padding: 0.75rem 0;
  color: var(--color-text-light);
  font-weight: 500;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  color: var(--color-text-light);
}

.contact-icon {
  font-size: 1.25rem;
}

.contact-form {
  background: var(--color-white);
  border-radius: var(--border-radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-lg);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 1rem;
}

.form-privacy {
  margin-bottom: 1.5rem;
  padding: 1rem;
  background: var(--color-light);
  border-radius: var(--border-radius);
}

.form-privacy small {
  color: var(--color-text-muted);
  line-height: 1.4;
}

/* Footer */
.footer {
  background: var(--color-dark);
  color: var(--color-light);
  padding: 4rem 0 2rem;
}

.footer-content {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-logo {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-primary-light);
  margin-bottom: 1rem;
}

.footer-tagline {
  color: var(--color-text-muted);
  margin-bottom: 1.5rem;
}

.social-links {
  display: flex;
  gap: 1rem;
}

.social-links a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  text-decoration: none;
  transition: var(--transition);
}

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

.footer-section h4 {
  color: var(--color-light);
  margin-bottom: 1rem;
}

.footer-links {
  list-style: none;
}

.footer-links a {
  color: var(--color-text-muted);
  text-decoration: none;
  transition: var(--transition);
  display: block;
  padding: 0.25rem 0;
}

.footer-links a:hover {
  color: var(--color-primary-light);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--color-text-muted);
}

.footer-legal {
  display: flex;
  gap: 2rem;
}

.footer-legal a {
  color: var(--color-text-muted);
  text-decoration: none;
  transition: var(--transition);
}

.footer-legal a:hover {
  color: var(--color-primary-light);
}

/* Back to Top Button */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 3rem;
  height: 3rem;
  background: var(--color-primary);
  color: white;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  font-size: 1.25rem;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  z-index: 1000;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  background: var(--color-primary-dark);
  transform: translateY(-2px);
}

/* Floating WhatsApp */
.floating-whatsapp {
  position: fixed;
  bottom: 6rem;
  right: 2rem;
  width: 3.5rem;
  height: 3.5rem;
  background: #25d366;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  text-decoration: none;
  box-shadow: var(--shadow-lg);
  transition: var(--transition);
  z-index: 1000;
  animation: pulse 2s infinite;
}

.floating-whatsapp:hover {
  transform: scale(1.1);
}

/* Modal */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10000;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  padding: 1rem;
}

.modal.active {
  opacity: 1;
  visibility: visible;
}

.modal-content {
  background: var(--color-white);
  border-radius: var(--border-radius-lg);
  padding: 2rem;
  max-width: 600px;
  width: 100%;
  max-height: 80vh;
  overflow-y: auto;
  position: relative;
  transform: scale(0.9);
  transition: var(--transition);
}

.modal.active .modal-content {
  transform: scale(1);
}

.modal-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: none;
  border: none;
  font-size: 2rem;
  cursor: pointer;
  color: var(--color-text-muted);
  transition: var(--transition);
}

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

/* Toast */
.toast {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-success);
  color: white;
  padding: 1rem 2rem;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  z-index: 10001;
}

.toast.show {
  opacity: 1;
  visibility: visible;
}

/* Animations */
@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

@keyframes pulse {
  0%,
  100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
}

/* Responsive Design */
@media (max-width: 1024px) {
  .hero-content {
    grid-template-columns: 1fr;
    gap: 3rem;
    text-align: center;
  }

  .roi-calculator {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .contact-content {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

  .footer-content {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }
}

@media (max-width: 768px) {
  .nav {
    display: none;
  }

  .mobile-menu-toggle {
    display: flex;
  }

  .hero {
    padding: 6rem 0 4rem;
  }

  .section {
    padding: 3rem 0;
  }

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

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

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

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

  .footer-bottom {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }

  .pricing-featured {
    transform: none;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 0.75rem;
  }

  .hero {
    padding: 4rem 0 3rem;
  }

  .audit-card {
    padding: 1.5rem;
  }

  .service-card,
  .case-study-card,
  .testimonial-card {
    padding: 1.5rem;
  }

  .contact-form {
    padding: 1.5rem;
  }

  .floating-whatsapp {
    bottom: 8rem;
    right: 1rem;
  }

  .back-to-top {
    bottom: 1rem;
    right: 1rem;
  }
}

/* Utility Classes */
.text-center {
  text-align: center;
}
.text-left {
  text-align: left;
}
.text-right {
  text-align: right;
}

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

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

button:focus,
input:focus,
select:focus,
textarea:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Print Styles */
@media print {
  .header,
  .floating-whatsapp,
  .back-to-top,
  .modal,
  .toast {
    display: none !important;
  }
}