/* 
* Zarnelita - Natural Sports Nutrition
* CSS Styles
*/

/* Variables */
:root {
  /* Colors */
  --color-background: #F6FFF8;
  --color-accent: #95D5B2;
  --color-text: #1B4332;
  --color-secondary: #D8F3DC;
  --color-button: #74C69D;
  --color-button-hover: #52B788;
  --color-error: #E63946;
  --color-success: #52B788;
  --color-white: #FFFFFF;
  --color-light-gray: #F1F1F1;

  /* Typography */
  --font-primary: 'Merriweather', serif;
  --font-secondary: 'Work Sans', sans-serif;
  
  /* Shadows */
  --shadow-soft: 0 4px 12px rgba(27, 67, 50, 0.08);
  --shadow-medium: 0 6px 16px rgba(27, 67, 50, 0.12);
  
  /* Border Radius */
  --radius-small: 4px;
  --radius-medium: 8px;
  --radius-large: 16px;
  
  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-xxl: 5rem;
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-medium: 0.3s ease;
  
  /* Breakpoints */
  --breakpoint-sm: 576px;
  --breakpoint-md: 768px;
  --breakpoint-lg: 992px;
  --breakpoint-xl: 1200px;
}

/* Base Styles */
* {
  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-secondary);
  font-size: 1rem;
  line-height: 1.6;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-primary);
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: var(--space-md);
}

h1 {
  font-size: 2.5rem;
}

h2 {
  font-size: 2rem;
}

h3 {
  font-size: 1.5rem;
}

p {
  margin-bottom: var(--space-md);
}

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

a:hover {
  color: var(--color-button);
}

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

ul {
  list-style: none;
}

button {
  background: none;
  border: none;
  cursor: pointer;
  font-family: var(--font-secondary);
}

/* Accessibility */
.skip-link {
  background-color: var(--color-text);
  color: var(--color-white);
  left: 0;
  padding: var(--space-md);
  position: absolute;
  top: -100px;
  transition: top var(--transition-fast);
  z-index: 1000;
}

.skip-link:focus {
  outline: 2px solid var(--color-accent);
  top: 0;
}

/* Focus styles */
:focus {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* Container */
.container {
  margin: 0 auto;
  max-width: 1200px;
  padding: 0 var(--space-md);
  width: 100%;
}

/* Button */
.button {
  align-items: center;
  border-radius: var(--radius-small);
  display: inline-flex;
  font-family: var(--font-secondary);
  font-size: 1rem;
  font-weight: 600;
  justify-content: center;
  padding: var(--space-md) var(--space-lg);
  text-align: center;
  transition: all var(--transition-fast);
}

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

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

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

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

/* Section */
.section {
  padding: var(--space-xl) 0;
}

.section__title {
  margin-bottom: var(--space-lg);
  text-align: center;
}

.section__subtitle {
  font-size: 1.1rem;
  margin: -1rem auto var(--space-xl);
  max-width: 700px;
  text-align: center;
}

/* Header */
header {
  background-color: var(--color-white);
  box-shadow: var(--shadow-soft);
  padding: var(--space-md) 0;
  position: sticky;
  top: 0;
  z-index: 100;
}

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

.logo {
  display: block;
  max-width: 160px;
}

.menu-toggle {
  color: var(--color-text);
  display: block;
  font-size: 1.5rem;
}

@media (min-width: 768px) {
  .menu-toggle {
    display: none;
  }
}

.main-menu {
  background-color: var(--color-white);
  box-shadow: var(--shadow-medium);
  display: none;
  left: 0;
  padding: var(--space-lg);
  position: absolute;
  top: 100%;
  width: 100%;
}

.main-menu.is-active {
  display: block;
}

@media (min-width: 768px) {
  .main-menu {
    background-color: transparent;
    box-shadow: none;
    display: flex;
    padding: 0;
    position: static;
    width: auto;
  }
}

.main-menu li {
  margin-bottom: var(--space-md);
}

@media (min-width: 768px) {
  .main-menu li {
    margin-bottom: 0;
    margin-left: var(--space-lg);
  }
}

.menu-link {
  font-weight: 500;
  position: relative;
}

.menu-link::after {
  background-color: var(--color-accent);
  bottom: -5px;
  content: '';
  height: 2px;
  left: 0;
  position: absolute;
  transform: scaleX(0);
  transition: transform var(--transition-medium);
  width: 100%;
}

.menu-link:hover::after, 
.menu-link:focus::after {
  transform: scaleX(1);
}

/* Hero Section */
.hero {
  align-items: center;
  background: linear-gradient(135deg, var(--color-secondary), var(--color-accent));
  display: flex;
  min-height: 80vh;
  padding: var(--space-xxl) 0;
  text-align: center;
}

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

.hero__title {
  font-size: 2.5rem;
  margin-bottom: var(--space-md);
}

@media (min-width: 768px) {
  .hero__title {
    font-size: 3.5rem;
  }
}

.hero__subtitle {
  font-size: 1.2rem;
  margin-bottom: var(--space-lg);
}

/* Benefits Section */
.benefits__grid {
  display: grid;
  gap: var(--space-lg);
  grid-template-columns: 1fr;
}

@media (min-width: 768px) {
  .benefits__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 992px) {
  .benefits__grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.benefit-card {
  background-color: var(--color-white);
  border-radius: var(--radius-medium);
  box-shadow: var(--shadow-soft);
  padding: var(--space-lg);
  text-align: center;
  transition: transform var(--transition-medium);
}

.benefit-card:hover {
  transform: translateY(-5px);
}

.benefit-card__icon {
  color: var(--color-button);
  font-size: 2.5rem !important;
  margin-bottom: var(--space-md);
}

.benefit-card__title {
  font-size: 1.3rem;
  margin-bottom: var(--space-md);
}

/* Ingredients Section */
.ingredients {
  background-color: var(--color-secondary);
}

.ingredients__grid {
  display: grid;
  gap: var(--space-lg);
  grid-template-columns: 1fr;
}

@media (min-width: 768px) {
  .ingredients__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 992px) {
  .ingredients__grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.ingredient-card {
  background-color: var(--color-white);
  border-radius: var(--radius-medium);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
  transition: transform var(--transition-medium);
}

.ingredient-card:hover {
  transform: translateY(-5px);
}

.ingredient-card__image {
  height: 200px;
  object-fit: cover;
  width: 100%;
}

.ingredient-card__title {
  margin-bottom: var(--space-sm);
  padding: var(--space-md) var(--space-md) 0;
}

.ingredient-card__text {
  padding: 0 var(--space-md) var(--space-md);
}

/* Products Section */
.products__grid {
  display: grid;
  gap: var(--space-xl);
  grid-template-columns: 1fr;
}

@media (min-width: 768px) {
  .products__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 992px) {
  .products__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.product-card {
  background-color: var(--color-white);
  border-radius: var(--radius-medium);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
  transition: transform var(--transition-medium);
}

.product-card:hover {
  transform: translateY(-5px);
}

.product-card__image {
  height: 250px;
  object-fit: cover;
  width: 100%;
}

.product-card__content {
  padding: var(--space-lg);
}

.product-card__title {
  font-size: 1.4rem;
  margin-bottom: var(--space-sm);
}

.product-card__text {
  margin-bottom: var(--space-md);
}

.product-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
}

.tag {
  background-color: var(--color-secondary);
  border-radius: var(--radius-small);
  font-size: 0.8rem;
  font-weight: 600;
  padding: var(--space-xs) var(--space-sm);
}

.product-card__button {
  margin-top: var(--space-md);
  width: 100%;
}

/* Performance Section */
.performance {
  background-color: var(--color-secondary);
}

.performance__content {
  align-items: center;
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

@media (min-width: 992px) {
  .performance__content {
    flex-direction: row;
  }
}

.performance__image {
  border-radius: var(--radius-medium);
  flex: 1;
  overflow: hidden;
}

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

.performance__text {
  flex: 1;
}

.performance-item {
  margin-bottom: var(--space-lg);
}

.performance-item:last-child {
  margin-bottom: 0;
}

.performance-item__title {
  font-size: 1.3rem;
  margin-bottom: var(--space-sm);
}

/* Testimonials Section */
.testimonials__slider {
  margin-bottom: var(--space-lg);
  overflow: hidden;
  position: relative;
}

.testimonial {
  background-color: var(--color-white);
  border-radius: var(--radius-medium);
  box-shadow: var(--shadow-soft);
  padding: var(--space-lg);
}

.testimonial__text {
  font-family: var(--font-primary);
  font-size: 1.1rem;
  font-style: italic;
  margin-bottom: var(--space-lg);
}

.testimonial__author {
  align-items: center;
  display: flex;
  flex-direction: column;
}

.testimonial__name {
  font-size: 1.2rem;
  margin-bottom: var(--space-xs);
}

.testimonial__title {
  color: var(--color-button);
  font-weight: 600;
}

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

.testimonials__button {
  align-items: center;
  background-color: var(--color-secondary);
  border-radius: 50%;
  color: var(--color-text);
  display: flex;
  height: 40px;
  justify-content: center;
  margin: 0 var(--space-sm);
  transition: background-color var(--transition-fast);
  width: 40px;
}

.testimonials__button:hover {
  background-color: var(--color-accent);
}

/* Diet Planner Section */
.diet-planner {
  align-items: center;
  background: linear-gradient(135deg, var(--color-accent), var(--color-button));
  color: var(--color-white);
  padding: var(--space-xxl) 0;
}

.diet-planner .container {
  align-items: center;
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

@media (min-width: 992px) {
  .diet-planner .container {
    flex-direction: row;
  }
}

.diet-planner__content {
  flex: 1;
  text-align: center;
}

@media (min-width: 992px) {
  .diet-planner__content {
    text-align: left;
  }
}

.diet-planner .section__title {
  color: var(--color-white);
  text-align: left;
}

.diet-planner__text {
  font-size: 1.1rem;
  margin-bottom: var(--space-lg);
}

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

.diet-planner .button--primary:hover {
  background-color: var(--color-secondary);
}

.diet-planner__image {
  border-radius: var(--radius-medium);
  flex: 1;
  overflow: hidden;
}

.diet-planner__img {
  height: 100%;
  object-fit: cover;
  width: 100%;
}

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

.faq-item {
  border-bottom: 1px solid var(--color-secondary);
  margin-bottom: var(--space-md);
}

.faq-item__question {
  align-items: center;
  display: flex;
  font-family: var(--font-primary);
  font-size: 1.1rem;
  font-weight: 700;
  justify-content: space-between;
  padding: var(--space-md) 0;
  text-align: left;
  width: 100%;
}

.faq-item__icon {
  transition: transform var(--transition-fast);
}

.faq-item__question[aria-expanded="true"] .faq-item__icon {
  transform: rotate(45deg);
}

.faq-item__answer {
  display: none;
  padding-bottom: var(--space-md);
  padding-top: var(--space-md);
}

.faq-item__question[aria-expanded="true"] + .faq-item__answer {
  display: block;
}

.faq-item__answer p {
  margin-bottom: 0;
}

/* Contact Section */
.contact__content {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

@media (min-width: 992px) {
  .contact__content {
    flex-direction: row;
  }
}

.contact__info {
  flex: 1;
}

.contact-item {
  align-items: flex-start;
  display: flex;
  margin-bottom: var(--space-lg);
}

.contact-item__icon {
  color: var(--color-button);
  font-size: 1.5rem;
  margin-right: var(--space-md);
  margin-top: var(--space-xs);
}

.contact-item__title {
  font-size: 1.2rem;
  margin-bottom: var(--space-xs);
}

.contact__form {
  background-color: var(--color-white);
  border-radius: var(--radius-medium);
  box-shadow: var(--shadow-soft);
  flex: 1;
  padding: var(--space-lg);
}

.form__group {
  margin-bottom: var(--space-md);
}

.form__label {
  display: block;
  font-weight: 600;
  margin-bottom: var(--space-xs);
}

.form__input,
.form__textarea {
  background-color: var(--color-light-gray);
  border: 2px solid transparent;
  border-radius: var(--radius-small);
  font-family: var(--font-secondary);
  font-size: 1rem;
  padding: var(--space-md);
  transition: border-color var(--transition-fast);
  width: 100%;
}

.form__input:focus,
.form__textarea:focus {
  border-color: var(--color-accent);
  outline: none;
}

.form__input.has-error,
.form__textarea.has-error {
  border-color: var(--color-error);
}

.form__error {
  color: var(--color-error);
  font-size: 0.9rem;
  margin-top: var(--space-xs);
}

.form__group--checkbox {
  align-items: flex-start;
  display: flex;
}

.form__checkbox {
  margin-right: var(--space-sm);
  margin-top: var(--space-xs);
}

.form__checkbox-label {
  font-size: 0.9rem;
}

.form__checkbox-label a {
  color: var(--color-button);
  text-decoration: underline;
}

.form__submit {
  margin-top: var(--space-lg);
  width: 100%;
}

/* Footer */
footer {
  background-color: var(--color-text);
  color: var(--color-white);
  padding: var(--space-xl) 0 var(--space-md);
}

.footer__content {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
  margin-bottom: var(--space-xl);
}

@media (min-width: 992px) {
  .footer__content {
    flex-direction: row;
  }
}

.footer__logo {
  flex: 1;
}

.footer__logo img {
  filter: brightness(0) invert(1);
  margin-bottom: var(--space-md);
  max-width: 140px;
}

.footer__tagline {
  font-style: italic;
}

.footer__links {
  display: flex;
  flex: 2;
  flex-wrap: wrap;
  gap: var(--space-xl);
}

.footer__column {
  flex: 1;
  min-width: 150px;
}

.footer__title {
  font-size: 1.2rem;
  margin-bottom: var(--space-md);
}

.footer__list li {
  margin-bottom: var(--space-sm);
}

.footer__list a {
  color: var(--color-secondary);
  transition: color var(--transition-fast);
}

.footer__list a:hover {
  color: var(--color-accent);
}

.footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--space-md);
  text-align: center;
}

.footer__copyright {
  font-size: 0.9rem;
  margin: 0;
  opacity: 0.7;
}

/* Back to top button */
.back-to-top {
  align-items: center;
  background-color: var(--color-button);
  border-radius: 50%;
  bottom: var(--space-lg);
  box-shadow: var(--shadow-medium);
  color: var(--color-white);
  display: flex;
  height: 50px;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  position: fixed;
  right: var(--space-lg);
  transition: all var(--transition-medium);
  width: 50px;
  z-index: 99;
}

.back-to-top.is-visible {
  opacity: 1;
  pointer-events: auto;
}

.back-to-top:hover {
  background-color: var(--color-button-hover);
  transform: translateY(-5px);
}

/* Responsive adjustments */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
  :root {
    --color-background: #1B4332;
    --color-text: #F6FFF8;
    --color-secondary: #2D6A4F;
    --color-light-gray: #2D6A4F;
  }
  
  .benefit-card,
  .ingredient-card,
  .product-card,
  .testimonial,
  .contact__form {
    background-color: #2D6A4F;
  }
  
  header {
    background-color: #1B4332;
  }
  
  .main-menu {
    background-color: #1B4332;
  }
}

.sr-only {
  display: none;
}

.success-page {
  margin: 0 auto;
  max-width: var(--breakpoint-lg);
  padding: var(--space-xxl) var(--space-xl);
  text-align: center;
  width: 100%;
}

.success-message__icon {
  color: var(--color-accent);
  font-size: 4rem !important;
}

#main-content {
  min-height: calc(100vh - 400px);
}

.legal-page {
  margin: 0 auto;
  max-width: var(--breakpoint-lg);
  padding: var(--space-xxl) var(--space-xl);
  width: 100%;
}

.legal-content__date {
  font-style: italic;
  text-align: center;
}

.legal-page h2 {
  font-size: 1.25rem;
  margin-top: var(--space-xl);
}

.legal-page h3 {
  font-size: 1.1rem;
  margin-top: var(--space-md);
}