/* style.css */

:root {
  --font-primary: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    Helvetica, Arial, sans-serif;
  --font-secondary: "Merriweather", serif;

  /* Light Theme */
  --color-background: #fdfefe;
  --color-surface: #ffffff;
  --color-text-primary: #17202a;
  --color-text-secondary: #566573;
  --color-primary: #2980b9;
  --color-primary-dark: #2471a3;
  --color-secondary: #abb2b9;
  --color-accent: #e74c3c;
  --color-border: #eaecee;
  --color-shadow: rgba(45, 55, 72, 0.1);
  --color-form-bg: #f4f6f7;

  /* Spacing */
  --spacing-xs: 4px;
  --spacing-s: 8px;
  --spacing-m: 16px;
  --spacing-l: 24px;
  --spacing-xl: 32px;
  --spacing-xxl: 48px;
  --spacing-xxxl: 64px;

  /* Other */
  --border-radius: 8px;
  --transition-speed: 0.3s;
  --container-width: 1200px;
  --shadow-sm: 0 2px 4px var(--color-shadow);
  --shadow-md: 0 4px 8px var(--color-shadow);
  --shadow-lg: 0 10px 20px var(--color-shadow);
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-background: #17202a;
    --color-surface: #1c2833;
    --color-text-primary: #fdfefe;
    --color-text-secondary: #aab7b8;
    --color-primary: #5dade2;
    --color-primary-dark: #85c1e9;
    --color-secondary: #566573;
    --color-accent: #ec7063;
    --color-border: #2c3e50;
    --color-shadow: rgba(0, 0, 0, 0.2);
    --color-form-bg: #212f3d;
  }
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 100%;
}

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 var(--transition-speed) ease,
    color var(--transition-speed) ease;
}

.container {
  width: 100%;
  max-width: var(--container-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--spacing-l);
  padding-right: var(--spacing-l);
}

section {
  padding-top: var(--spacing-xxxl);
  padding-bottom: var(--spacing-xxxl);
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-primary);
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-m);
}

h1 {
  font-size: 2.5rem;
  letter-spacing: -1px;
}

h2 {
  font-size: 2rem;
  text-align: center;
}

h3 {
  font-size: 1.5rem;
}

h4 {
  font-size: 1.2rem;
}

p {
  margin-bottom: var(--spacing-m);
  color: var(--color-text-secondary);
}

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

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

ul,
ol {
  padding-left: var(--spacing-l);
}

ul {
  list-style-type: none;
  padding-left: 0;
}

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

.section-header {
  text-align: center;
  max-width: 750px;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: var(--spacing-xxl);
}

.section-header h2 {
  margin-bottom: var(--spacing-m);
}

.section-header p {
  font-size: 1.1rem;
  color: var(--color-text-secondary);
}

.section-divider {
  height: 1px;
  background-color: var(--color-border);
  border: none;
  width: 80%;
  max-width: var(--container-width);
  margin: 0 auto;
}

/* Header */
.main-header {
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: var(--spacing-m) 0;
  position: sticky;
  top: 0;
  z-index: 1000;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  background-color: color-mix(in srgb, var(--color-surface) 85%, transparent);
}

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

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text-primary);
  text-decoration: none;
}

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

.main-navigation ul {
  display: flex;
  list-style: none;
  gap: var(--spacing-xl);
}

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

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

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

.main-navigation a:hover,
.main-navigation a:focus {
  color: var(--color-text-primary);
  text-decoration: none;
}

/* CTA Button */
.cta-button {
  display: inline-block;
  padding: var(--spacing-m) var(--spacing-xl);
  border-radius: var(--border-radius);
  font-weight: 600;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
  border: 2px solid transparent;
  transition: background-color var(--transition-speed) ease,
    color var(--transition-speed) ease,
    border-color var(--transition-speed) ease,
    transform var(--transition-speed) ease;
}

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

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

.cta-button.primary-cta:hover,
.cta-button.primary-cta:focus {
  background-color: var(--color-primary-dark);
  color: #fff;
}

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

.cta-button.secondary-cta:hover,
.cta-button.secondary-cta:focus {
  background-color: var(--color-primary);
  color: #fff;
}

.header-cta {
  padding: var(--spacing-s) var(--spacing-l);
}

/* Hero Section */
.hero-section {
  padding-top: var(--spacing-xxxl);
  padding-bottom: var(--spacing-xxxl);
  text-align: center;
}

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

.hero-content h1 {
  font-size: 3.5rem;
  margin-bottom: var(--spacing-l);
}

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

.hero-cta-group {
  display: flex;
  justify-content: center;
  gap: var(--spacing-m);
  flex-wrap: wrap;
}

/* Value Proposition Section */
.value-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-xl);
}

.value-card {
  background-color: var(--color-surface);
  padding: var(--spacing-xl);
  border-radius: var(--border-radius);
  border: 1px solid var(--color-border);
  text-align: center;
  transition: transform var(--transition-speed) ease,
    box-shadow var(--transition-speed) ease;
}

.value-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}

.value-icon {
  width: 50px;
  height: 50px;
  margin: 0 auto var(--spacing-l);
  background-color: color-mix(in srgb, var(--color-primary) 10%, transparent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.value-icon svg {
  color: var(--color-primary);
  width: 24px;
  height: 24px;
}

.value-card h3 {
  margin-bottom: var(--spacing-s);
}

/* Services Section */
.services-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-xl);
}

.service-item {
  background-color: var(--color-surface);
  padding: var(--spacing-xl);
  border-radius: var(--border-radius);
  border: 1px solid var(--color-border);
}

.service-item ul {
  list-style-type: none;
  padding-left: 0;
  margin-top: var(--spacing-l);
}

.service-item li {
  position: relative;
  padding-left: var(--spacing-xl);
  margin-bottom: var(--spacing-s);
  color: var(--color-text-secondary);
}

.service-item li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--color-primary);
  font-weight: 700;
}

/* How It Works Section */
.steps-container {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-l);
  position: relative;
}

.step {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-l);
  position: relative;
  padding: var(--spacing-l);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
}

.step-number {
  flex-shrink: 0;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background-color: var(--color-primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 700;
}

/* Tabs Section */
.tabs-nav {
  display: flex;
  justify-content: center;
  margin-bottom: var(--spacing-xl);
  border-bottom: 1px solid var(--color-border);
  gap: var(--spacing-m);
}

.tab-link {
  padding: var(--spacing-m) var(--spacing-l);
  border: none;
  background-color: transparent;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  position: relative;
  border-radius: var(--border-radius) var(--border-radius) 0 0;
}

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

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

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

.tab-content {
  display: none;
  padding: var(--spacing-l);
  animation: fadeIn 0.5s ease;
}

.tab-content.active {
  display: block;
}

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

/* Case Study Section */
.case-study-section {
  background-color: var(--color-surface);
}

.case-study-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xxl);
  align-items: center;
}

.eyebrow {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-primary);
  text-transform: uppercase;
  margin-bottom: var(--spacing-s);
}

.case-study-text ul {
  padding-left: var(--spacing-l);
  list-style-type: disc;
  margin-bottom: var(--spacing-m);
}

.case-study-image img {
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-lg);
}

/* Testimonials Section */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-xl);
}

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

.testimonial-card blockquote {
  flex-grow: 1;
  border: none;
  padding: 0;
  margin: 0 0 var(--spacing-l);
}

.testimonial-card blockquote p {
  font-style: italic;
  color: var(--color-text-primary);
}

.testimonial-card cite {
  font-style: normal;
}

.testimonial-card cite strong {
  display: block;
  color: var(--color-text-primary);
}

.testimonial-card cite span {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
}

/* FAQ Section */
.accordion-item {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  margin-bottom: var(--spacing-s);
}

.accordion-header {
  width: 100%;
  padding: var(--spacing-l);
  text-align: left;
  background-color: transparent;
  border: none;
  cursor: pointer;
  font-size: 1.1rem;
  font-weight: 600;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--color-text-primary);
}

.accordion-header svg {
  transition: transform var(--transition-speed) ease;
  flex-shrink: 0;
}

.accordion-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease-out, padding 0.4s ease-out;
}

.accordion-content p {
  padding: 0 var(--spacing-l) var(--spacing-l);
  margin: 0;
}

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

.accordion-item.active .accordion-content {
  max-height: 500px; /* Adjust as needed */
  transition: max-height 0.4s ease-in, padding 0.4s ease-in;
}

.faq-footer {
  text-align: center;
  margin-top: var(--spacing-xl);
}

/* Final CTA Section */
.final-cta-section {
  background-color: var(--color-primary);
  color: #fff;
  text-align: center;
}

.final-cta-section h2 {
  color: #fff;
}

.final-cta-section p {
  color: rgba(255, 255, 255, 0.85);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.form-container {
  max-width: 800px;
  margin: var(--spacing-xl) auto 0;
  background-color: var(--color-surface);
  padding: var(--spacing-xl);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-lg);
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-l);
}

.form-group {
  text-align: left;
}

.form-group label {
  display: block;
  margin-bottom: var(--spacing-s);
  font-weight: 500;
  color: var(--color-text-primary);
}

.form-group input {
  width: 100%;
  padding: var(--spacing-m);
  border-radius: var(--border-radius);
  border: 1px solid var(--color-border);
  background-color: var(--color-form-bg);
  color: var(--color-text-primary);
  font-size: 1rem;
  transition: border-color var(--transition-speed) ease,
    box-shadow var(--transition-speed) ease;
}

.form-group input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px
    color-mix(in srgb, var(--color-primary) 20%, transparent);
}

.form-footer {
  margin-top: var(--spacing-l);
}

.form-footer p {
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-l);
}

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

.thank-you-message {
  padding: var(--spacing-xl);
  text-align: center;
}

.thank-you-message h3 {
  color: var(--color-primary);
}

/* Footer */
.main-footer {
  background-color: var(--color-surface);
  color: var(--color-text-secondary);
  padding-top: var(--spacing-xxxl);
  border-top: 1px solid var(--color-border);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: var(--spacing-xxl);
}

.footer-column h4 {
  margin-bottom: var(--spacing-l);
  color: var(--color-text-primary);
}

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

.footer-column li {
  margin-bottom: var(--spacing-s);
}

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

.footer-column a:hover,
.footer-column a:focus {
  color: var(--color-primary);
  text-decoration: none;
}

.contact-column p {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-m);
}

.contact-column svg {
  flex-shrink: 0;
  margin-top: 4px;
  color: var(--color-primary);
}

.footer-bottom {
  border-top: 1px solid var(--color-border);
  margin-top: var(--spacing-xxl);
  padding: var(--spacing-l) 0;
  text-align: center;
  font-size: 0.9rem;
}

/* Animations on Scroll */
.fade-in-on-scroll {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

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

/* Cookie Banner */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  background-color: var(--color-surface);
  color: var(--color-text-primary);
  padding: var(--spacing-l);
  box-shadow: 0 -2px 10px var(--color-shadow);
  z-index: 2000;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--spacing-l);
  transform: translateY(100%);
  animation: slideIn 0.5s forwards ease-out;
}

@keyframes slideIn {
  to {
    transform: translateY(0);
  }
}

.cookie-banner.dismissed {
  animation: slideOut 0.5s forwards ease-in;
}

@keyframes slideOut {
  from {
    transform: translateY(0);
  }
  to {
    transform: translateY(110%);
  }
}

.cookie-banner p {
  margin: 0;
}

.cookie-banner a {
  text-decoration: underline;
}

.cookie-accept-btn {
  padding: var(--spacing-s) var(--spacing-l);
  background-color: var(--color-primary);
  color: #fff;
  border: none;
  border-radius: var(--border-radius);
  cursor: pointer;
  white-space: nowrap;
}

/* Hamburger menu */
.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  z-index: 1001;
}

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

/* RESPONSIVE DESIGN */
@media (max-width: 1024px) {
  h1 {
    font-size: 2.2rem;
  }
  h2 {
    font-size: 1.8rem;
  }
  .hero-content h1 {
    font-size: 2.8rem;
  }
  .value-grid,
  .testimonials-grid {
    grid-template-columns: 1fr 1fr;
  }
  .case-study-content {
    grid-template-columns: 1fr;
  }
  .case-study-image {
    margin-top: var(--spacing-xl);
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .form-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .main-navigation {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background-color: var(--color-surface);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    transform: translateX(100%);
    transition: transform 0.4s ease-in-out;
  }
  .main-navigation.is-open {
    display: flex;
    transform: translateX(0);
  }
  .main-navigation ul {
    flex-direction: column;
    text-align: center;
  }
  .main-navigation a {
    font-size: 1.5rem;
  }
  .mobile-menu-toggle {
    display: block;
  }
  .header-cta {
    display: none;
  }

  h1 {
    font-size: 1.8rem;
  }
  h2 {
    font-size: 1.6rem;
  }
  .hero-content h1 {
    font-size: 2.2rem;
  }
  .hero-content .subtitle {
    font-size: 1.1rem;
  }

  section {
    padding-top: var(--spacing-xxl);
    padding-bottom: var(--spacing-xxl);
  }

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

  .tabs-nav {
    flex-direction: column;
    border-bottom: none;
  }

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

  .tab-link.active::after {
    height: 100%;
    width: 3px;
    left: -1px;
    top: 0;
    transform: scaleY(1);
  }

  .footer-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .contact-column p {
    justify-content: center;
  }
  .cookie-banner {
    flex-direction: column;
    text-align: center;
  }
}

@media (min-width: 1440px) {
  :root {
    --container-width: 1320px;
  }
  html {
    font-size: 112.5%; /* 18px base */
  }
  h1 {
    font-size: 2.8rem;
  }
  .hero-content h1 {
    font-size: 4rem;
  }
}