/* 
 * Ombrivenrix - Mineral Water Pools
 * Main Stylesheet
 */

/* Import Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=DM+Serif+Display:ital@0;1&family=Open+Sans:wght@300;400;500;600;700&display=swap');

/* Variables */
:root {
  /* Colors */
  --color-background: #E9F3F6;
  --color-accent: #5BA8C1;
  --color-secondary: #BFDDE2;
  --color-text: #1A1A1A;
  --color-button: #5BA8C1;
  --color-white: #FFFFFF;
  --color-light-gray: #F5F5F5;
  --color-medium-gray: #E0E0E0;
  --color-dark-gray: #666666;
  
  /* Typography */
  --font-heading: 'DM Serif Display', serif;
  --font-body: 'Open Sans', sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-md: 1.125rem;
  --font-size-lg: 1.25rem;
  --font-size-xl: 1.5rem;
  --font-size-2xl: 2rem;
  --font-size-3xl: 2.5rem;
  --font-size-4xl: 3rem;
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  --spacing-4xl: 5rem;
  
  /* Borders */
  --border-radius-sm: 0.25rem;
  --border-radius-md: 0.5rem;
  --border-radius-lg: 1rem;
  --border-radius-xl: 2rem;
  
  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 12px 24px rgba(0, 0, 0, 0.15);
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Breakpoints */
  --breakpoint-sm: 576px;
  --breakpoint-md: 768px;
  --breakpoint-lg: 992px;
  --breakpoint-xl: 1200px;
  
  /* Container */
  --container-padding: 1.5rem;
  --container-max-width: 1200px;
}

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

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

body {
  background-color: var(--color-background);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  line-height: 1.6;
  overflow-x: hidden;
}

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

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition-normal);
}

a:hover, 
a:focus {
  color: var(--color-secondary);
}

ul {
  list-style: none;
}

/* Utility Classes */
.visually-hidden {
  border: 0;
  clip: rect(0 0 0 0);
  height: 1px;
  margin: -1px;
  overflow: hidden;
  padding: 0;
  position: absolute;
  width: 1px;
}

.skip-to-content {
  background-color: var(--color-accent);
  color: var(--color-white);
  left: 50%;
  padding: var(--spacing-sm) var(--spacing-md);
  position: absolute;
  top: -100px;
  transform: translateX(-50%);
  transition: top var(--transition-normal);
  z-index: 1000;
}

.skip-to-content:focus {
  border-radius: 0 0 var(--border-radius-md) var(--border-radius-md);
  top: 0;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 400;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
}

.section-title {
  color: var(--color-text);
  font-size: var(--font-size-2xl);
  margin-bottom: var(--spacing-xl);
  position: relative;
  text-align: center;
}

.section-title::after {
  background-color: var(--color-accent);
  bottom: -10px;
  content: '';
  height: 3px;
  left: 50%;
  position: absolute;
  transform: translateX(-50%);
  width: 60px;
}

.section-title--centered {
  text-align: center;
}

.section-title--centered::after {
  left: 50%;
  transform: translateX(-50%);
}

/* Buttons */
.btn {
  background-color: transparent;
  border: none;
  border-radius: var(--border-radius-md);
  cursor: pointer;
  display: inline-block;
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  font-weight: 600;
  padding: var(--spacing-md) var(--spacing-xl);
  text-align: center;
  text-decoration: none;
  transition: all var(--transition-normal);
}

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

.btn--primary:hover,
.btn--primary:focus {
  background-color: var(--color-secondary);
  box-shadow: var(--shadow-lg);
  color: var(--color-text);
  transform: translateY(-2px);
}

/* Layout */
.header__container,
.footer__container,
.about__container,
.benefits__container,
.science__container,
.gallery__container,
.conditions__container,
.process__container,
.testimonials__container,
.timeline__container,
.contact__container {
  margin: 0 auto;
  max-width: var(--container-max-width);
  padding: 0 var(--container-padding);
  width: 100%;
}

/* Header */
.header {
  background-color: transparent;
  left: 0;
  padding: var(--spacing-md) 0;
  position: fixed;
  top: 0;
  transition: background-color var(--transition-normal);
  width: 100%;
  z-index: 100;
}

.header.scrolled {
  background-color: rgba(255, 255, 255, 0.95);
  box-shadow: var(--shadow-md);
}

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

.header__logo {
  display: block;
  max-width: 180px;
  z-index: 101;
}

.header__nav {
  display: flex;
  justify-content: flex-end;
}

.header__menu-toggle {
  background: none;
  border: none;
  cursor: pointer;
  display: none;
  height: 24px;
  position: relative;
  width: 30px;
  z-index: 101;
}

.header__menu-icon,
.header__menu-icon::before,
.header__menu-icon::after {
  background-color: var(--color-text);
  height: 2px;
  position: absolute;
  transition: all var(--transition-normal);
  width: 100%;
}

.header__menu-icon {
  top: 50%;
  transform: translateY(-50%);
}

.header__menu-icon::before,
.header__menu-icon::after {
  content: '';
  left: 0;
}

.header__menu-icon::before {
  top: -8px;
}

.header__menu-icon::after {
  bottom: -8px;
}

.header__menu-toggle[aria-expanded="true"] .header__menu-icon {
  background-color: transparent;
}

.header__menu-toggle[aria-expanded="true"] .header__menu-icon::before {
  top: 0;
  transform: rotate(45deg);
}

.header__menu-toggle[aria-expanded="true"] .header__menu-icon::after {
  bottom: 0;
  transform: rotate(-45deg);
}

.header__menu {
  align-items: center;
  display: flex;
}

.header__menu-item {
  margin-left: var(--spacing-xl);
}

.header__menu-link {
  color: var(--color-text);
  font-size: var(--font-size-base);
  font-weight: 500;
  padding: var(--spacing-xs) 0;
  position: relative;
  transition: color var(--transition-normal);
}

.header__menu-link::after {
  background-color: var(--color-accent);
  bottom: -2px;
  content: '';
  height: 2px;
  left: 0;
  opacity: 0;
  position: absolute;
  transition: width var(--transition-normal), opacity var(--transition-normal);
  width: 0;
}

.header__menu-link:hover,
.header__menu-link:focus {
  color: var(--color-accent);
}

.header__menu-link:hover::after,
.header__menu-link:focus::after {
  opacity: 1;
  width: 100%;
}

/* Hero Section */
.hero {
  align-items: center;
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 100vh;
  padding: var(--spacing-4xl) 0 var(--spacing-2xl);
  position: relative;
}

.hero__content {
  max-width: 600px;
  padding: var(--spacing-xl);
  position: relative;
  text-align: center;
  width: 100%;
  z-index: 1;
}

.hero__title {
  color: var(--color-text);
  font-size: var(--font-size-4xl);
  margin-bottom: var(--spacing-md);
}

.hero__subtitle {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-xl);
}

.hero__image {
  height: 100%;
  position: absolute;
  right: 0;
  top: 0;
  width: 60%;
  z-index: 0;
}

.hero__image img {
  height: 100%;
  object-fit: cover;
  width: 100%;
}

.hero__image::before {
  background: linear-gradient(to right, var(--color-background) 0%, rgba(233, 243, 246, 0.7) 50%, rgba(233, 243, 246, 0) 100%);
  content: '';
  height: 100%;
  left: 0;
  position: absolute;
  top: 0;
  width: 100%;
  z-index: 1;
}

/* About Section */
.about {
  padding: var(--spacing-4xl) 0;
}

.about__container {
  align-items: center;
  display: flex;
  flex-direction: row;
  gap: var(--spacing-3xl);
}

.about__image {
  border-radius: var(--border-radius-lg);
  flex: 1;
  overflow: hidden;
  position: relative;
}

.about__image img {
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
  width: 100%;
}

.about__image:hover img {
  transform: scale(1.05);
}

.about__content {
  flex: 1;
}

.about__content p {
  margin-bottom: var(--spacing-md);
}

/* Benefits Section */
.benefits {
  background-color: var(--color-white);
  padding: var(--spacing-4xl) 0;
}

.benefits__grid {
  display: grid;
  gap: var(--spacing-xl);
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.benefits__item {
  background-color: var(--color-background);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
  padding: var(--spacing-xl);
  text-align: center;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

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

.benefits__icon {
  margin: 0 auto var(--spacing-md);
}

.benefits__title {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-sm);
}

/* Science Section */
.science {
  padding: var(--spacing-4xl) 0;
}

.science__container {
  display: grid;
  gap: var(--spacing-3xl);
  grid-template-columns: repeat(2, 1fr);
}

.science__content {
  flex: 1;
}

.science__list {
  margin-top: var(--spacing-xl);
}

.science__item {
  align-items: center;
  display: flex;
  flex-direction: column;
  margin-bottom: var(--spacing-lg);
  text-align: center;
}

.science__number {
  color: var(--color-accent);
  font-family: var(--font-heading);
  font-size: var(--font-size-2xl);
  font-weight: 700;
  margin-bottom: var(--spacing-xs);
}

.science__image {
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
  flex: 1;
  height: 100%;
  overflow: hidden;
}

.science__image img {
  display: block;
  height: 100%;
  object-fit: cover;
  width: 100%;
}

/* Gallery Section */
.gallery {
  background-color: var(--color-white);
  padding: var(--spacing-4xl) 0;
}

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

.gallery__item {
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  position: relative;
}

.gallery__item:nth-child(1) {
  grid-column: 1;
  grid-row: 1 / span 2;
}

.gallery__item:nth-child(2) {
  grid-column: 2;
  grid-row: 1;
}

.gallery__item:nth-child(3) {
  grid-column: 2;
  grid-row: 2;
}

.gallery__item:nth-child(4) {
  grid-column: 1 / span 2;
  grid-row: 3;
  max-height: 450px;
}

.gallery__image {
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
  width: 100%;
}

.gallery__item:hover .gallery__image {
  transform: scale(1.05);
}

/* Conditions Section */
.conditions {
  padding: var(--spacing-4xl) 0;
}

.conditions__grid {
  display: grid;
  gap: var(--spacing-xl);
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.conditions__item {
  background-color: var(--color-white);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
  padding: var(--spacing-xl);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

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

.conditions__title {
  color: var(--color-accent);
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-sm);
}

/* Process Section */
.process {
  background-color: var(--color-white);
  padding: var(--spacing-4xl) 0;
}

.process__steps {
  position: relative;
}

.process__steps::before {
  background-color: var(--color-secondary);
  content: '';
  height: 100%;
  left: 24px;
  position: absolute;
  top: 0;
  width: 2px;
  z-index: 0;
}

.process__step {
  display: flex;
  margin-bottom: var(--spacing-xl);
  position: relative;
  z-index: 1;
}

.process__number {
  align-items: center;
  background-color: var(--color-accent);
  border-radius: 50%;
  color: var(--color-white);
  display: flex;
  font-family: var(--font-heading);
  font-size: var(--font-size-lg);
  height: 50px;
  justify-content: center;
  margin-right: var(--spacing-lg);
  min-width: 50px;
  position: relative;
  width: 50px;
}

.process__content {
  flex: 1;
  padding-top: var(--spacing-xs);
}

.process__title {
  color: var(--color-accent);
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-xs);
}

/* Testimonials Section */
.testimonials {
  padding: var(--spacing-4xl) 0;
}

.testimonials__slider {
  margin-bottom: var(--spacing-xl);
  position: relative;
}

.testimonials__slide {
  background-color: var(--color-white);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
  display: none;
  opacity: 0;
  padding: var(--spacing-xl);
  transition: opacity var(--transition-normal);
}

.testimonials__slide.active {
  display: block;
  opacity: 1;
}

.testimonials__quote {
  font-style: italic;
  margin-bottom: var(--spacing-lg);
  position: relative;
}

.testimonials__quote::before {
  color: var(--color-secondary);
  content: '\201C';
  font-family: var(--font-heading);
  font-size: 4rem;
  left: -10px;
  line-height: 1;
  opacity: 0.5;
  position: absolute;
  top: -20px;
}

.testimonials__author {
  display: flex;
  flex-direction: column;
  text-align: right;
}

.testimonials__name {
  color: var(--color-accent);
  font-size: var(--font-size-md);
  margin-bottom: var(--spacing-xs);
}

.testimonials__position {
  color: var(--color-dark-gray);
  font-size: var(--font-size-sm);
}

.testimonials__controls {
  align-items: center;
  display: flex;
  justify-content: center;
}

.testimonials__prev,
.testimonials__next {
  align-items: center;
  background: none;
  border: 1px solid var(--color-accent);
  border-radius: 50%;
  cursor: pointer;
  height: 40px;
  margin: 0 var(--spacing-sm);
  padding: 0;
  transition: background-color var(--transition-normal);
  width: 40px;
}

.testimonials__prev:hover,
.testimonials__next:hover,
.testimonials__prev:focus,
.testimonials__next:focus {
  background-color: var(--color-secondary);
}

/* Timeline Section */
.timeline {
  background-color: var(--color-white);
  padding: var(--spacing-4xl) 0;
}

.timeline__steps {
  margin: 0 auto;
  max-width: 800px;
  position: relative;
}

.timeline__steps::before {
  background-color: var(--color-secondary);
  bottom: 0;
  content: "";
  left: 50%;
  position: absolute;
  top: 0;
  transform: translateX(-50%);
  width: 2px;
  z-index: 0;
}

.timeline__step {
  margin-bottom: var(--spacing-3xl);
  position: relative;
}

.timeline__point {
  background-color: var(--color-accent);
  border-radius: 50%;
  height: 20px;
  left: 50%;
  position: absolute;
  top: 0;
  transform: translateX(-50%);
  width: 20px;
  z-index: 1;
}

.timeline__content {
  background-color: var(--color-background);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
  padding: var(--spacing-lg);
  position: relative;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
  width: 45%;
}

.timeline__step:nth-child(odd) .timeline__content {
  margin-right: auto;
}

.timeline__step:nth-child(even) .timeline__content {
  margin-left: auto;
}

.timeline__step:hover .timeline__content {
  box-shadow: var(--shadow-lg);
  transform: translateY(-5px);
}

.timeline__title {
  color: var(--color-accent);
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-sm);
}

/* Contact Section */
.contact {
  padding: var(--spacing-4xl) 0;
}

.contact__container {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-3xl);
}

.contact__info {
  flex: 1;
  min-width: 300px;
}

.contact__text {
  margin-bottom: var(--spacing-xl);
}

.contact__details {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.contact__item {
  align-items: flex-start;
  display: flex;
  gap: var(--spacing-md);
}

.contact__icon {
  margin-top: var(--spacing-xs);
}

.contact__title {
  color: var(--color-accent);
  font-size: var(--font-size-md);
  margin-bottom: var(--spacing-xs);
}

.contact__form-container {
  background-color: var(--color-white);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
  flex: 1;
  min-width: 300px;
  padding: var(--spacing-xl);
}

.form__group {
  margin-bottom: var(--spacing-lg);
}

.form__label {
  color: var(--color-text);
  display: block;
  font-size: var(--font-size-sm);
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
}

.form__input {
  background-color: var(--color-light-gray);
  border: 1px solid var(--color-medium-gray);
  border-radius: var(--border-radius-md);
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  padding: var(--spacing-md);
  transition: border-color var(--transition-normal), box-shadow var(--transition-normal);
  width: 100%;
}

.form__textarea {
  min-height: 150px;
  resize: vertical;
}

.form__input:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 2px rgba(91, 168, 193, 0.2);
  outline: none;
}

.form__input.error {
  border-color: #e74c3c;
}

.form__error {
  color: #e74c3c;
  display: block;
  font-size: var(--font-size-xs);
  margin-top: var(--spacing-xs);
}

/* Footer */
.footer {
  background-color: var(--color-text);
  color: var(--color-white);
  padding-top: var(--spacing-3xl);
  position: relative;
}

.footer__wave {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1200 120' preserveAspectRatio='none'%3E%3Cpath d='M0,0V46.29c47.79,22.2,103.59,32.17,158,28,70.36-5.37,136.33-33.31,206.8-37.5C438.64,32.43,512.34,53.67,583,72.05c69.27,18,138.3,24.88,209.4,13.08,36.15-6,69.85-17.84,104.45-29.34C989.49,25,1113-14.29,1200,52.47V0Z' opacity='.25' fill='%235BA8C1'%3E%3C/path%3E%3Cpath d='M0,0V15.81C13,36.92,27.64,56.86,47.69,72.05,99.41,111.27,165,111,224.58,91.58c31.15-10.15,60.09-26.07,89.67-39.8,40.92-19,84.73-46,130.83-49.67,36.26-2.85,70.9,9.42,98.6,31.56,31.77,25.39,62.32,62,103.63,73,40.44,10.79,81.35-6.69,119.13-24.28s75.16-39,116.92-43.05c59.73-5.85,113.28,22.88,168.9,38.84,30.2,8.66,59,6.17,87.09-7.5,22.43-10.89,48-26.93,60.65-49.24V0Z' opacity='.5' fill='%235BA8C1'%3E%3C/path%3E%3Cpath d='M0,0V5.63C149.93,59,314.09,71.32,475.83,42.57c43-7.64,84.23-20.12,127.61-26.46,59-8.63,112.48,12.24,165.56,35.4C827.93,77.22,886,95.24,951.2,90c86.53-7,172.46-45.71,248.8-84.81V0Z' fill='%235BA8C1'%3E%3C/path%3E%3C/svg%3E");
  background-position: center top;
  background-repeat: no-repeat;
  background-size: cover;
  height: 60px;
  position: absolute;
  top: -60px;
  transform: rotate(180deg);
  width: 100%;
}

.footer__container {
  display: grid;
  gap: var(--spacing-2xl);
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  padding-bottom: var(--spacing-2xl);
}

.footer__logo {
  display: block;
  filter: brightness(0) invert(1);
  margin-bottom: var(--spacing-md);
  max-width: 150px;
}

.footer__tagline {
  color: var(--color-secondary);
  font-style: italic;
}

.footer__title {
  color: var(--color-secondary);
  font-size: var(--font-size-md);
  margin-bottom: var(--spacing-md);
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.footer__link {
  color: var(--color-white);
  transition: color var(--transition-normal);
}

.footer__link:hover,
.footer__link:focus {
  color: var(--color-secondary);
}

.footer__news-item {
  margin-bottom: var(--spacing-md);
}

.footer__news-title {
  color: var(--color-white);
  font-size: var(--font-size-sm);
  margin-bottom: var(--spacing-xs);
}

.footer__news-text {
  color: var(--color-medium-gray);
  font-size: var(--font-size-sm);
}

.footer__hours {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.footer__hours li {
  display: flex;
  justify-content: space-between;
}

.footer__hours span {
  color: var(--color-secondary);
  font-weight: 600;
  margin-right: var(--spacing-md);
}

.footer__bottom {
  background-color: rgba(0, 0, 0, 0.2);
  padding: var(--spacing-md) 0;
}

.footer__bottom .footer__container {
  align-items: center;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  padding-bottom: 0;
}

.footer__copyright {
  color: var(--color-medium-gray);
  font-size: var(--font-size-sm);
  text-align: center;
}

.footer__legal {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  justify-content: center;
}

.footer__legal-link {
  color: var(--color-medium-gray);
  font-size: var(--font-size-sm);
  transition: color var(--transition-normal);
}

.footer__legal-link:hover,
.footer__legal-link:focus {
  color: var(--color-secondary);
}

/* Back to Top Button */
.back-to-top {
  align-items: center;
  background-color: var(--color-accent);
  border-radius: 50%;
  bottom: var(--spacing-xl);
  box-shadow: var(--shadow-md);
  display: flex;
  height: 50px;
  justify-content: center;
  opacity: 0;
  position: fixed;
  right: var(--spacing-xl);
  transition: all var(--transition-normal);
  visibility: hidden;
  width: 50px;
  z-index: 99;
}

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

.back-to-top:hover,
.back-to-top:focus {
  background-color: var(--color-secondary);
  box-shadow: var(--shadow-lg);
  transform: translateY(-5px);
}

/* Responsive Styles */
@media (max-width: 991px) {
  .hero {
    padding-top: 80px;
  }

  .hero__image {
    height: 60vh;
    position: relative;
    width: 100%;
  }

  .about__container {
    flex-direction: column;
  }

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

  .timeline__steps::before {
    left: 20px;
  }

  .timeline__point {
    left: 20px;
  }

  .timeline__content {
    margin-right: 0 !important;
    margin-left: 50px !important;
    width: calc(100% - 70px) !important;
  }

  .timeline__step:nth-child(odd) .timeline__content::after,
  .timeline__step:nth-child(even) .timeline__content::after {
    border-color: transparent;
    border-right-color: var(--color-background);
    left: -20px;
    right: auto;
  }
}

@media (max-width: 767px) {
  .header__menu-toggle {
    display: block;
  }

  .header__menu {
    background-color: var(--color-white);
    box-shadow: var(--shadow-lg);
    flex-direction: column;
    height: 100vh;
    justify-content: center;
    left: 0;
    opacity: 0;
    padding: var(--spacing-3xl);
    position: fixed;
    top: 0;
    transform: translateX(-100%);
    transition: transform var(--transition-normal), opacity var(--transition-normal);
    width: 100%;
    z-index: 100;
  }

  .header__menu-toggle[aria-expanded="true"] + .header__menu {
    opacity: 1;
    transform: translateX(0);
  }

  .header__menu-item {
    margin: var(--spacing-md) 0;
    text-align: center;
  }

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

  .gallery__item:nth-child(1),
  .gallery__item:nth-child(2),
  .gallery__item:nth-child(3),
  .gallery__item:nth-child(4) {
    grid-column: 1;
    grid-row: auto;
  }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}

/* Legal Pages */
.legal-page {
  padding: calc(var(--spacing-3xl) + 80px) 0 var(--spacing-3xl);
}

.legal-page__container {
  margin: 0 auto;
  max-width: 800px;
  padding: 0 var(--container-padding);
}

.legal-page__title {
  color: var(--color-accent);
  font-size: var(--font-size-3xl);
  margin-bottom: var(--spacing-xl);
  text-align: center;
}

.legal-page__content {
  background-color: var(--color-white);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
  margin-bottom: var(--spacing-xl);
  padding: var(--spacing-xl);
}

.legal-page__content h2 {
  color: var(--color-accent);
  font-size: var(--font-size-xl);
  margin: var(--spacing-xl) 0 var(--spacing-md);
}

.legal-page__content h2:first-child {
  margin-top: 0;
}

.legal-page__content h3 {
  color: var(--color-text);
  font-size: var(--font-size-lg);
  margin: var(--spacing-lg) 0 var(--spacing-sm);
}

.legal-page__content p,
.legal-page__content ul,
.legal-page__content ol {
  margin-bottom: var(--spacing-md);
}

.legal-page__content ul,
.legal-page__content ol {
  padding-left: var(--spacing-xl);
}

.legal-page__content ul li,
.legal-page__content ol li {
  margin-bottom: var(--spacing-xs);
}

.legal-page__content a {
  color: var(--color-accent);
  text-decoration: underline;
}

.legal-page__content a:hover,
.legal-page__content a:focus {
  color: var(--color-secondary);
}

.legal-page__updated {
  color: var(--color-dark-gray);
  font-size: var(--font-size-sm);
  font-style: italic;
  margin-bottom: var(--spacing-xl);
  text-align: center;
}

.legal-page__actions {
  display: flex;
  justify-content: center;
}

/* Success Page */
.success {
  padding: calc(var(--spacing-3xl) + 80px) 0 var(--spacing-3xl);
  text-align: center;
}

.success__container {
  margin: 0 auto;
  max-width: 800px;
  padding: 0 var(--container-padding);
}

.success__content {
  background-color: var(--color-white);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
  margin-bottom: var(--spacing-xl);
  padding: var(--spacing-xl);
}

.success__icon {
  margin: 0 auto var(--spacing-lg);
}

.success__title {
  color: var(--color-accent);
  font-size: var(--font-size-2xl);
  margin-bottom: var(--spacing-md);
}

.success__message {
  margin-bottom: var(--spacing-xl);
}

.success__details {
  background-color: var(--color-background);
  border-radius: var(--border-radius-md);
  margin: var(--spacing-xl) auto;
  max-width: 600px;
  padding: var(--spacing-lg);
  text-align: left;
}

.success__subtitle {
  color: var(--color-accent);
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-md);
}

.success__list {
  list-style: none;
  padding: 0;
}

.success__list li {
  border-bottom: 1px solid var(--color-medium-gray);
  margin-bottom: var(--spacing-sm);
  padding-bottom: var(--spacing-sm);
}

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

.success__actions {
  margin-top: var(--spacing-xl);
}

/* Current page indicator in footer legal links */
.footer__legal-link.current {
  color: var(--color-secondary);
  font-weight: 600;
}

/* Dark Mode */
@media (prefers-color-scheme: dark) {
  :root {
    --color-background: #1E2A2D;
    --color-accent: #5BA8C1;
    --color-secondary: #3A5A65;
    --color-text: #E9F3F6;
    --color-white: #2C3A3F;
    --color-light-gray: #3A4A50;
    --color-medium-gray: #4A5A60;
    --color-dark-gray: #B0B0B0;
  }

  .hero__image::before {
    background: linear-gradient(to right, var(--color-background) 0%, rgba(30, 42, 45, 0.7) 50%, rgba(30, 42, 45, 0) 100%);
  }

  .footer {
    background-color: #121A1D;
  }

  .footer__logo {
    filter: none;
  }
}