/* style.css */

:root {
  --font-primary: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    Helvetica, Arial, sans-serif;
  --font-headings: "Montserrat", var(--font-primary);

  --color-primary: #0d47a1;
  --color-primary-dark: #0a367e;
  --color-accent: #d81b60;
  --color-accent-dark: #a01448;

  --color-text: #212121;
  --color-text-light: #616161;
  --color-background: #ffffff;
  --color-background-light: #f5f7fa;
  --color-border: #e0e0e0;
  --color-success: #2e7d32;
  --color-white: #ffffff;
  --color-black: #000000;

  --shadow-small: 0 2px 4px rgba(0, 0, 0, 0.05);
  --shadow-medium: 0 4px 12px rgba(0, 0, 0, 0.1);
  --shadow-large: 0 10px 30px rgba(0, 0, 0, 0.1);

  --border-radius-small: 4px;
  --border-radius-medium: 8px;
  --border-radius-large: 16px;

  --spacing-xs: 0.25rem;
  --spacing-s: 0.5rem;
  --spacing-m: 1rem;
  --spacing-l: 1.5rem;
  --spacing-xl: 2.5rem;
  --spacing-xxl: 4rem;

  --transition-fast: 0.2s ease-in-out;
  --transition-medium: 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
  --transition-slow: 0.6s ease;

  --max-width: 1200px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-primary: #42a5f5;
    --color-primary-dark: #64b5f6;
    --color-accent: #ec407a;
    --color-accent-dark: #f06292;

    --color-text: #e0e0e0;
    --color-text-light: #bdbdbd;
    --color-background: #121212;
    --color-background-light: #1e1e1e;
    --color-border: #424242;
    --color-success: #81c784;

    --shadow-small: 0 2px 4px rgba(0, 0, 0, 0.2);
    --shadow-medium: 0 4px 12px rgba(0, 0, 0, 0.3);
    --shadow-large: 0 10px 30px rgba(0, 0, 0, 0.4);
  }
}

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

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

body {
  margin: 0;
  font-family: var(--font-primary);
  background-color: var(--color-background);
  color: var(--color-text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-headings);
  color: var(--color-text);
  font-weight: 700;
  line-height: 1.3;
  margin-top: 0;
  margin-bottom: var(--spacing-m);
}

h1 {
  font-size: 3rem;
}
h2 {
  font-size: 2.25rem;
}
h3 {
  font-size: 1.5rem;
}
h4 {
  font-size: 1.25rem;
}

p {
  margin-top: 0;
  margin-bottom: var(--spacing-m);
}

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

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

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

ul {
  padding-left: 20px;
  margin-top: 0;
  margin-bottom: var(--spacing-m);
}

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

.small-container {
  max-width: 800px;
}

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

.section-padding-dark {
  padding-top: var(--spacing-xxl);
  padding-bottom: var(--spacing-xxl);
  background-color: var(--color-background-light);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: var(--spacing-xl);
}

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

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

.grid-layout {
  display: grid;
  gap: var(--spacing-l);
}

.columns-2 {
  grid-template-columns: repeat(2, 1fr);
}
.columns-3 {
  grid-template-columns: repeat(3, 1fr);
}
.columns-4 {
  grid-template-columns: repeat(4, 1fr);
}

.button {
  display: inline-block;
  padding: var(--spacing-s) var(--spacing-l);
  border-radius: var(--border-radius-medium);
  font-weight: 600;
  text-align: center;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-size: 1rem;
}

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

.button-primary:hover {
  background-color: var(--color-primary-dark);
  color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-medium);
}

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

.button-accent:hover {
  background-color: var(--color-accent-dark);
  color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-medium);
}

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

.button-secondary:hover {
  background-color: var(--color-background-light);
  border-color: var(--color-text-light);
}

.text-link {
  font-weight: 600;
  color: var(--color-primary);
  display: inline-block;
  position: relative;
  padding-bottom: 2px;
}

.text-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background-color: var(--color-primary);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--transition-medium);
}

.text-link:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

.site-header {
  position: sticky;
  top: 0;
  width: 100%;
  z-index: 1000;
  padding: var(--spacing-m) 0;
  background-color: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: all var(--transition-medium);
}

.site-header.scrolled {
  background-color: var(--color-background);
  box-shadow: var(--shadow-medium);
  border-bottom-color: var(--color-border);
  padding: var(--spacing-s) 0;
}

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

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-text);
  display: flex;
  align-items: center;
  gap: var(--spacing-s);
}

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

.logo-subtitle {
  font-size: 0.8rem;
  font-weight: 400;
  color: var(--color-text-light);
  border-left: 1px solid var(--color-border);
  padding-left: var(--spacing-s);
  margin-left: var(--spacing-s);
  opacity: 0.8;
}

.main-navigation ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: var(--spacing-l);
}

.main-navigation a {
  color: var(--color-text);
  font-weight: 500;
  padding: var(--spacing-s) 0;
  position: relative;
}

.main-navigation a::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--color-primary);
  transform: scaleX(0);
  transition: transform var(--transition-medium);
  transform-origin: center;
}

.main-navigation a:hover::after,
.main-navigation a.active::after {
  transform: scaleX(1);
}

#mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 1001;
}

#mobile-menu-toggle .icon-menu,
#mobile-menu-toggle .icon-close {
  width: 28px;
  height: 28px;
  stroke: var(--color-text);
}

#mobile-menu-toggle .icon-close {
  display: none;
}

.nav-open #mobile-menu-toggle .icon-menu {
  display: none;
}

.nav-open #mobile-menu-toggle .icon-close {
  display: block;
}

.hero-section {
  position: relative;
  background-image: url("../media/hero-background.webp");
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  color: var(--color-white);
  padding: calc(var(--spacing-xxl) * 2) 0;
  text-align: center;
}

.hero-section::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    45deg,
    rgba(13, 71, 161, 0.8),
    rgba(0, 0, 0, 0.6)
  );
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
}

.hero-title {
  font-size: 3.5rem;
  color: var(--color-white);
  margin-bottom: var(--spacing-m);
  font-weight: 800;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
}

.hero-subtitle {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  opacity: 0.9;
}

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

.hero-cta-group .button {
  font-size: 1.1rem;
  padding: var(--spacing-m) var(--spacing-xl);
}

.hero-cta-group .button-secondary {
  color: var(--color-white);
  border-color: rgba(255, 255, 255, 0.5);
}

.hero-cta-group .button-secondary:hover {
  background-color: rgba(255, 255, 255, 0.1);
  border-color: var(--color-white);
}

.card {
  background-color: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-large);
  padding: var(--spacing-l);
  text-align: center;
  transition: transform var(--transition-medium),
    box-shadow var(--transition-medium);
  box-shadow: var(--shadow-small);
}

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

.card-icon {
  width: 60px;
  height: 60px;
  margin: 0 auto var(--spacing-m);
  background-color: var(--color-primary-dark);
  color: var(--color-white);
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
}

.card-icon svg {
  width: 28px;
  height: 28px;
}

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

.card-description {
  color: var(--color-text-light);
  font-size: 0.95rem;
}

.process-steps {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xl);
  position: relative;
}

.process-steps::before {
  content: "";
  position: absolute;
  top: 20px;
  left: 24px;
  width: 2px;
  height: calc(100% - 40px);
  background-color: var(--color-border);
  z-index: 1;
}

.step {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-l);
  position: relative;
  z-index: 2;
}

.step-number {
  flex-shrink: 0;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background-color: var(--color-primary);
  color: var(--color-white);
  font-size: 1.5rem;
  font-weight: 700;
  display: flex;
  justify-content: center;
  align-items: center;
  border: 3px solid var(--color-background-light);
}

.step-content h4 {
  margin-bottom: var(--spacing-s);
}

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

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

.tab-link {
  padding: var(--spacing-m) var(--spacing-l);
  cursor: pointer;
  background: none;
  border: none;
  border-bottom: 3px solid transparent;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-text-light);
  transition: all var(--transition-fast);
}

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

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

.tab-content {
  display: none;
  animation: fadeIn 0.6s;
}

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

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.tab-pane-content {
  display: flex;
  gap: var(--spacing-l);
  align-items: center;
}

.tab-pane-content svg {
  flex-shrink: 0;
  width: 60px;
  height: 60px;
  color: var(--color-accent);
}

.columns-2-bias {
  grid-template-columns: 1fr 1.5fr;
  align-items: center;
}

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

.case-study-content ul {
  list-style: none;
  padding-left: 0;
}

.case-study-content ul li {
  padding-left: 30px;
  position: relative;
  margin-bottom: var(--spacing-m);
}

.case-study-content ul li::before {
  content: "✔";
  position: absolute;
  left: 0;
  top: 2px;
  color: var(--color-success);
  font-weight: 700;
}

.results-metrics {
  display: flex;
  gap: var(--spacing-l);
  margin-top: var(--spacing-l);
  border-top: 1px solid var(--color-border);
  padding-top: var(--spacing-l);
}

.metric {
  text-align: center;
}

.metric-value {
  display: block;
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-accent);
}

.metric-label {
  font-size: 0.9rem;
  color: var(--color-text-light);
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-l);
}

.testimonial {
  background-color: var(--color-background);
  padding: var(--spacing-xl);
  border-radius: var(--border-radius-medium);
  border-left: 5px solid var(--color-primary);
  margin: 0;
  position: relative;
  box-shadow: var(--shadow-medium);
}

.testimonial::before {
  content: "“";
  font-family: Georgia, serif;
  position: absolute;
  top: 0;
  left: var(--spacing-m);
  font-size: 5rem;
  color: var(--color-primary);
  opacity: 0.1;
  line-height: 1;
}

.testimonial p {
  font-style: italic;
  font-size: 1.1rem;
  position: relative;
  z-index: 2;
}

.testimonial footer {
  margin-top: var(--spacing-m);
}

.testimonial cite {
  font-style: normal;
  font-weight: 700;
  display: block;
}

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

.team-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-l);
}

.team-member {
  border: 1px solid var(--color-border);
  padding: var(--spacing-l);
  border-radius: var(--border-radius-medium);
  transition: all var(--transition-medium);
}

.team-member:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-medium);
}

.team-member h4 {
  margin-bottom: var(--spacing-xs);
  color: var(--color-primary);
}

.team-member p {
  font-style: italic;
  color: var(--color-text-light);
  margin-bottom: var(--spacing-s);
}

.team-member span {
  font-size: 0.9rem;
}

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

.accordion-header {
  width: 100%;
  background: none;
  border: none;
  padding: var(--spacing-l) 0;
  text-align: left;
  font-size: 1.15rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--color-text);
}

.accordion-header svg {
  transition: transform var(--transition-medium);
  flex-shrink: 0;
  margin-left: var(--spacing-m);
}

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

.accordion-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-medium),
    padding var(--transition-medium);
}

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

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

.cta-section {
  background: linear-gradient(
    45deg,
    var(--color-primary),
    var(--color-primary-dark)
  );
  color: var(--color-white);
  padding: var(--spacing-xxl) 0;
}

.cta-content {
  max-width: 700px;
  margin: 0 auto;
  text-align: center;
}

.cta-content h2 {
  color: var(--color-white);
}

.cta-content p {
  opacity: 0.9;
  margin-bottom: var(--spacing-xl);
}

.cta-form {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-m);
}

.form-row {
  display: flex;
  gap: var(--spacing-m);
}

.cta-form input[type="text"],
.cta-form input[type="email"] {
  width: 100%;
  padding: var(--spacing-m);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-medium);
  font-size: 1rem;
  background-color: var(--color-background);
  color: var(--color-text);
  transition: border-color var(--transition-fast),
    box-shadow var(--transition-fast);
}

.cta-form input[type="text"]:focus,
.cta-form input[type="email"]:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(216, 27, 96, 0.2);
}

.cta-form .button {
  flex-shrink: 0;
  width: 100%;
}

.form-consent {
  font-size: 0.85rem;
  text-align: left;
  margin-top: var(--spacing-s);
  color: rgba(255, 255, 255, 0.8);
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-s);
}

.form-consent input[type="checkbox"] {
  margin-top: 5px;
}

.form-consent a {
  color: var(--color-white);
  text-decoration: underline;
}

.form-thank-you-message {
  border: 1px solid var(--color-success);
  background-color: rgba(46, 125, 50, 0.1);
  padding: var(--spacing-l);
  border-radius: var(--border-radius-medium);
}

.form-thank-you-message h4 {
  color: var(--color-white);
  margin-bottom: var(--spacing-s);
}

.site-footer {
  background-color: var(--color-background-light);
  color: var(--color-text-light);
  padding-top: var(--spacing-xxl);
  font-size: 0.95rem;
}

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

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

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

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

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

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

.footer-column address {
  font-style: normal;
  line-height: 1.6;
}

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

.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: var(--color-background-light);
  color: var(--color-text);
  padding: var(--spacing-l);
  box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
  z-index: 2000;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--spacing-l);
  transform: translateY(100%);
  animation: slideUp 0.5s ease-out forwards;
}

.cookie-banner p {
  margin: 0;
}

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

.fade-out {
  opacity: 0;
  transition: opacity 0.5s;
}

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

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

@media (max-width: 1024px) {
  h1 {
    font-size: 2.5rem;
  }
  h2 {
    font-size: 2rem;
  }
  .hero-title {
    font-size: 3rem;
  }

  .columns-3 {
    grid-template-columns: 1fr;
  }
  .team-grid {
    grid-template-columns: 1fr;
  }
  .testimonials-grid {
    grid-template-columns: 1fr;
  }

  .columns-2-bias {
    grid-template-columns: 1fr;
  }

  .case-study-image {
    margin-bottom: var(--spacing-l);
  }
}

@media (max-width: 768px) {
  .main-navigation {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--color-background);
    box-shadow: var(--shadow-medium);
    border-top: 1px solid var(--color-border);
  }

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

  .main-navigation ul {
    flex-direction: column;
    padding: var(--spacing-l);
    gap: 0;
  }

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

  .main-navigation a {
    display: block;
    padding: var(--spacing-m) 0;
    width: 100%;
    border-bottom: 1px solid var(--color-border);
  }

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

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

  #mobile-menu-toggle {
    display: block;
  }

  .header-container .button-primary {
    display: none;
  }

  .site-header.scrolled {
    padding: var(--spacing-s) 0;
  }

  .hero-title {
    font-size: 2.5rem;
  }
  .hero-subtitle {
    font-size: 1.1rem;
  }
  .hero-cta-group {
    flex-direction: column;
  }
  .hero-cta-group .button {
    width: 100%;
    max-width: 300px;
    margin: 0 auto;
  }

  .section-padding,
  .section-padding-dark {
    padding-top: var(--spacing-xl);
    padding-bottom: var(--spacing-xl);
  }

  .tab-pane-content {
    flex-direction: column;
    text-align: center;
  }

  .tab-pane-content svg {
    margin-bottom: var(--spacing-m);
  }

  .process-steps::before {
    left: 24px;
  }

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

  .footer-column address,
  .footer-column p {
    margin: 0 auto;
  }

  .form-row {
    flex-direction: column;
  }

  .cookie-banner {
    flex-direction: column;
    text-align: center;
  }
}

@media (prefers-color-scheme: dark) {
  .site-header {
    background-color: rgba(18, 18, 18, 0.8);
  }

  .site-header.scrolled {
    background-color: var(--color-background);
  }

  .hero-section::before {
    background: linear-gradient(
      45deg,
      rgba(20, 20, 20, 0.8),
      rgba(0, 0, 0, 0.7)
    );
  }

  .hero-cta-group .button-secondary:hover {
    background-color: rgba(255, 255, 255, 0.1);
  }

  .cta-form input[type="text"],
  .cta-form input[type="email"] {
    background-color: var(--color-background-light);
    border-color: var(--color-border);
    color: var(--color-text);
  }

  .cta-form input::placeholder {
    color: var(--color-text-light);
  }

  .cta-form input:focus {
    box-shadow: 0 0 0 3px rgba(236, 64, 122, 0.2);
  }
}