/* style.css */

/* 1. CSS Variables and Theme Setup */
:root {
  --font-primary: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    Helvetica, Arial, sans-serif;
  --font-secondary: "Georgia", serif;

  /* Light Theme */
  --color-primary: #0a58ca;
  --color-primary-hover: #0a4db5;
  --color-secondary: #6c757d;
  --color-secondary-hover: #5a6268;
  --color-background: #f8f9fa;
  --color-surface: #ffffff;
  --color-text-primary: #212529;
  --color-text-secondary: #495057;
  --color-border: #dee2e6;
  --color-success: #198754;
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.15);
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-primary: #3b82f6;
    --color-primary-hover: #60a5fa;
    --color-secondary: #9ca3af;
    --color-secondary-hover: #b0b5bb;
    --color-background: #111827;
    --color-surface: #1f2937;
    --color-text-primary: #f9fafb;
    --color-text-secondary: #d1d5db;
    --color-border: #374151;
    --color-success: #22c55e;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.4);
  }
}

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

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

body {
  font-family: var(--font-primary);
  background-color: var(--color-background);
  color: var(--color-text-primary);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color 0.3s ease, color 0.3s ease;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-text-primary);
  margin-bottom: 1rem;
}

h1 {
  font-size: 3rem;
  letter-spacing: -1px;
}

h2 {
  font-size: 2.25rem;
}

h3 {
  font-size: 1.5rem;
}

h4 {
  font-size: 1.25rem;
}

p {
  margin-bottom: 1.5rem;
  color: var(--color-text-secondary);
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.2s ease-in-out;
}

a:hover {
  color: var(--color-primary-hover);
  text-decoration: underline;
}

ul,
ol {
  list-style-position: inside;
  padding-left: 1.5rem;
}

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

/* 3. Layout */
.container {
  width: 100%;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

section {
  padding-top: 5rem;
  padding-bottom: 5rem;
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: 3.5rem;
}

.section-header h2 {
  margin-bottom: 0.75rem;
}

.section-header p {
  font-size: 1.125rem;
  color: var(--color-text-secondary);
}

/* 4. Header and Navigation */
.site-header {
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 1000;
  padding: 1rem 0;
  transition: background-color 0.3s ease, border-color 0.3s ease,
    box-shadow 0.3s ease;
}

.site-header.scrolled {
  box-shadow: var(--shadow-md);
}

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

.logo {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--color-text-primary);
  text-decoration: none;
}

.logo:hover {
  color: var(--color-primary);
  text-decoration: none;
}

.main-navigation ul {
  list-style: none;
  display: flex;
  gap: 2rem;
  padding: 0;
  margin: 0;
}

.main-navigation a {
  color: var(--color-text-secondary);
  font-weight: 500;
  font-size: 1rem;
  text-decoration: none;
  position: relative;
  padding: 0.5rem 0;
}

.main-navigation a::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-primary);
  transition: width 0.3s ease;
}

.main-navigation a:hover,
.main-navigation a.active {
  color: var(--color-text-primary);
}

.main-navigation a:hover::after {
  width: 100%;
}

.mobile-nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.mobile-nav-toggle svg {
  width: 28px;
  height: 28px;
  color: var(--color-text-primary);
}

/* 5. Buttons */
.button {
  display: inline-block;
  padding: 0.75rem 1.75rem;
  font-size: 1rem;
  font-weight: 600;
  text-align: center;
  text-decoration: none;
  border-radius: 8px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: background-color 0.2s ease, color 0.2s ease,
    border-color 0.2s ease, transform 0.2s ease;
}

.button:hover {
  text-decoration: none;
  transform: translateY(-2px);
}

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

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

.secondary-button {
  background-color: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.secondary-button:hover {
  background-color: var(--color-primary);
  color: #ffffff;
}

.large-button {
  padding: 1rem 2.5rem;
  font-size: 1.125rem;
}

/* 6. Hero Section */
.hero-section {
  background-color: var(--color-surface);
  padding: 6rem 0;
  text-align: center;
}

.hero-content {
  max-width: 800px;
  margin: 0 auto;
}

.hero-content h1 {
  font-size: 3.5rem;
}

.hero-content .subtitle {
  font-size: 1.25rem;
  margin-top: 1.5rem;
  margin-bottom: 2.5rem;
  color: var(--color-text-secondary);
}

.hero-buttons {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}

/* 7. Services Section */
.services-section {
  background-color: var(--color-background);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.service-card {
  background-color: var(--color-surface);
  padding: 2.5rem 2rem;
  border-radius: 12px;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  text-align: left;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.service-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-md);
}

.service-icon {
  margin-bottom: 1.5rem;
  color: var(--color-primary);
}

.service-icon svg {
  width: 48px;
  height: 48px;
}

.service-card h3 {
  margin-bottom: 1rem;
}

.service-card p {
  margin-bottom: 1.5rem;
  color: var(--color-text-secondary);
  min-height: 100px;
}

.service-card ul {
  list-style: none;
  padding: 0;
}

.service-card ul li {
  margin-bottom: 0.75rem;
  position: relative;
  padding-left: 1.75rem;
  color: var(--color-text-secondary);
}

.service-card ul li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--color-success);
  font-weight: bold;
}

/* 8. How It Works (Tabs) Section */
.how-it-works-section {
  background-color: var(--color-surface);
}

.tabs-container {
  max-width: 900px;
  margin: 0 auto;
}

.tabs-nav {
  display: flex;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 2rem;
}

.tab-link {
  padding: 1rem 1.5rem;
  cursor: pointer;
  background: none;
  border: none;
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  position: relative;
  transition: color 0.3s ease;
}

.tab-link::after {
  content: "";
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 100%;
  height: 3px;
  background-color: var(--color-primary);
  transform: scaleX(0);
  transition: transform 0.3s ease;
}

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

.tab-link.active::after {
  transform: scaleX(1);
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
  animation: fadeIn 0.5s ease-in-out;
}

.tab-content h4 {
  margin-bottom: 1rem;
}

/* 9. Case Studies Section */
.case-studies-section {
  background-color: var(--color-background);
}

.case-study-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

.case-study-card {
  background-color: var(--color-surface);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow-md);
  display: flex;
  flex-direction: column;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.case-study-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.case-study-image {
  width: 100%;
  height: 250px;
  object-fit: cover;
}

.case-study-content {
  padding: 2rem;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.case-study-category {
  display: inline-block;
  margin-bottom: 1rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.case-study-content h4 {
  margin-bottom: 1rem;
}

.case-study-content p {
  color: var(--color-text-secondary);
}

.case-study-results {
  margin-top: auto;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
  display: flex;
  gap: 2rem;
}

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

.result-value {
  display: block;
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-primary);
}

.result-label {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

/* 10. About Us Section */
.about-us-section {
  background-color: var(--color-surface);
}

.about-us-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.about-us-text .section-header {
  text-align: left;
  margin: 0 0 2rem 0;
  max-width: none;
}

.about-us-text .button {
  margin-top: 1rem;
}

.about-us-image img {
  border-radius: 12px;
  box-shadow: var(--shadow-lg);
}

/* 11. Testimonials Section */
.testimonials-section {
  background-color: var(--color-background);
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.testimonial-card {
  background-color: var(--color-surface);
  padding: 2rem;
  border-radius: 12px;
  border: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
}

.testimonial-text {
  font-family: var(--font-secondary);
  font-size: 1.125rem;
  font-style: italic;
  color: var(--color-text-secondary);
  margin-bottom: 1.5rem;
  flex-grow: 1;
  position: relative;
  padding-left: 2.5rem;
}

.testimonial-text::before {
  content: "“";
  font-family: var(--font-secondary);
  font-size: 4rem;
  line-height: 1;
  color: var(--color-primary);
  opacity: 0.2;
  position: absolute;
  top: -0.5rem;
  left: 0;
}

.testimonial-author {
  margin-top: auto;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
}

.author-name {
  display: block;
  font-weight: 600;
}

.author-title {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

/* 12. FAQ Section (Accordion) */
.faq-section {
  background-color: var(--color-surface);
}

.accordion {
  max-width: 800px;
  margin: 0 auto;
  border: 1px solid var(--color-border);
  border-radius: 12px;
  overflow: hidden;
}

.accordion-item {
  border-bottom: 1px solid var(--color-border);
}

.accordion-item:last-child {
  border-bottom: none;
}

.accordion-header {
  width: 100%;
  background-color: transparent;
  border: none;
  padding: 1.5rem;
  text-align: left;
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-text-primary);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background-color 0.2s ease;
}

.accordion-header:hover {
  background-color: rgba(0, 0, 0, 0.02);
}

.accordion-header svg {
  width: 24px;
  height: 24px;
  color: var(--color-secondary);
  transition: transform 0.3s ease;
}

.accordion-item.active .accordion-header svg {
  transform: rotate(180deg);
}

.accordion-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease-out, padding 0.3s ease-out;
}

.accordion-item.active .accordion-content {
  max-height: 500px; /* Adjust as needed */
  transition: max-height 0.5s ease-in;
}

.accordion-content p {
  padding: 0 1.5rem 1.5rem 1.5rem;
  margin: 0;
  font-size: 1rem;
  color: var(--color-text-secondary);
}

.faq-link {
  text-align: center;
  margin-top: 2.5rem;
}

.faq-link a {
  font-weight: 600;
}

/* 13. Team Section */
.team-section {
  background-color: var(--color-background);
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}

.team-member-card {
  background-color: var(--color-surface);
  padding: 2rem;
  border-radius: 12px;
  border: 1px solid var(--color-border);
  text-align: center;
}

.member-name {
  margin-bottom: 0.5rem;
}

.member-role {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-primary);
  margin-bottom: 1rem;
}

.member-bio {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  margin: 0;
}

/* 14. CTA Section and Form */
.cta-section {
  background-color: var(--color-primary);
  color: #ffffff;
  padding: 5rem 0;
  text-align: center;
}

.cta-content h2 {
  color: #ffffff;
}

.cta-content p {
  color: rgba(255, 255, 255, 0.9);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  font-size: 1.1rem;
}

.quick-registration-form {
  margin-top: 2.5rem;
}

#registration-form .form-row {
  display: flex;
  justify-content: center;
  gap: 1rem;
}

#registration-form input {
  min-width: 280px;
  padding: 0.8rem 1rem;
  font-size: 1rem;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background-color: var(--color-surface);
  color: var(--color-text-primary);
}

#registration-form input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.3);
}

#registration-form .primary-button {
  background-color: var(--color-surface);
  color: var(--color-primary);
  border: none;
}

#registration-form .primary-button:hover {
  background-color: #e9ecef;
}

#form-thank-you p {
  color: #ffffff;
  font-weight: 500;
  font-size: 1.2rem;
}

/* 15. Footer */
.site-footer {
  background-color: var(--color-surface);
  color: var(--color-text-secondary);
  padding-top: 4rem;
  font-size: 0.95rem;
  border-top: 1px solid var(--color-border);
}

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

.footer-column h4 {
  color: var(--color-text-primary);
  margin-bottom: 1.5rem;
  font-size: 1.1rem;
}

.footer-column.about-column p {
  margin: 0;
}

.footer-column.links-column ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-column.links-column li {
  margin-bottom: 0.75rem;
}

.footer-column.links-column a {
  color: var(--color-text-secondary);
}

.footer-column.links-column a:hover {
  color: var(--color-primary);
  text-decoration: underline;
}

.contact-column address {
  font-style: normal;
}

.contact-column p {
  margin-bottom: 1rem;
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
}

.contact-column svg {
  flex-shrink: 0;
  margin-top: 3px;
  width: 16px;
  height: 16px;
  color: var(--color-secondary);
}

.contact-column a {
  color: var(--color-text-secondary);
}

.contact-column a:hover {
  color: var(--color-primary);
}

.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding: 1.5rem 0;
  text-align: center;
}

.footer-bottom p {
  margin: 0;
  font-size: 0.875rem;
}

/* 16. Cookie Banner */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: var(--color-surface);
  color: var(--color-text-primary);
  padding: 1.5rem;
  box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
  z-index: 2000;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 2rem;
  transform: translateY(100%);
  transition: transform 0.5s ease-in-out;
}

.cookie-banner.visible {
  transform: translateY(0);
}

.cookie-banner-text {
  margin: 0;
  color: var(--color-text-secondary);
}

.cookie-banner-button {
  flex-shrink: 0;
}

/* 17. Animations and Transitions */
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-on-scroll {
  opacity: 0;
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.animate-on-scroll.slide-up {
  transform: translateY(40px);
}

.animate-on-scroll.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* 18. Responsive Design */
@media (max-width: 1024px) {
  h1 {
    font-size: 2.5rem;
  }

  h2 {
    font-size: 2rem;
  }

  .hero-content h1 {
    font-size: 3rem;
  }

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

  .case-study-grid {
    grid-template-columns: 1fr;
  }

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

  .about-us-image {
    grid-row: 1;
    margin-bottom: 2rem;
  }

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

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

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

@media (max-width: 768px) {
  html {
    font-size: 15px;
  }

  section {
    padding-top: 4rem;
    padding-bottom: 4rem;
  }

  .main-navigation {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    padding: 1rem;
    flex-direction: column;
    box-shadow: var(--shadow-md);
  }

  .main-navigation.nav-open {
    display: flex;
  }

  .main-navigation ul {
    flex-direction: column;
    gap: 0;
    width: 100%;
  }

  .main-navigation li {
    width: 100%;
  }

  .main-navigation a {
    display: block;
    padding: 1rem;
    width: 100%;
    border-bottom: 1px solid var(--color-border);
  }

  .main-navigation a::after {
    display: none;
  }

  .main-navigation li:last-child a {
    border-bottom: none;
  }

  .mobile-nav-toggle {
    display: block;
  }

  .header-cta {
    display: none;
  }

  .hero-content h1 {
    font-size: 2.5rem;
  }

  .hero-content .subtitle {
    font-size: 1.1rem;
  }

  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }

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

  .tabs-nav {
    flex-direction: column;
  }

  .tab-link {
    border-bottom: 1px solid var(--color-border);
  }

  .tab-link::after {
    display: none;
  }

  .tab-link.active {
    background-color: rgba(0, 0, 0, 0.03);
  }

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

  #registration-form .form-row {
    flex-direction: column;
    align-items: stretch;
  }

  #registration-form input {
    min-width: unset;
    width: 100%;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .contact-column p {
    justify-content: center;
  }

  .cookie-banner {
    flex-direction: column;
    text-align: center;
    gap: 1rem;
    padding: 1rem;
  }
}