/**
 * Fyronavira - Main Stylesheet
 * 
 * This file contains all styles for the Fyronavira website.
 * It uses a mobile-first approach with BEM methodology.
 */

/* ============================
   Variables
   ============================ */
:root {
  /* Colors */
  --color-background: #FFFFFF;
  --color-accent: #F06292;
  --color-accent-dark: #E91E63;
  --color-accent-light: #F48FB1;
  --color-text: #333333;
  --color-text-light: #666666;
  --color-text-lighter: #999999;
  --color-border: #DDDDDD;
  --color-border-light: #EEEEEE;
  --color-success: #4CAF50;
  --color-error: #F44336;
  --color-warning: #FFC107;
  --color-info: #2196F3;
  
  /* Typography */
  --font-body: 'Roboto', sans-serif;
  --font-heading: 'Poppins', sans-serif;
  --font-size-base: 1rem;
  --font-size-sm: 0.875rem;
  --font-size-xs: 0.75rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-weight-normal: 400;
  --font-weight-bold: 700;
  --line-height-tight: 1.2;
  --line-height-normal: 1.5;
  --line-height-loose: 1.8;
  
  /* 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: 6rem;
  
  /* Borders */
  --border-radius-sm: 0.25rem;
  --border-radius-md: 0.5rem;
  --border-radius-lg: 1rem;
  --border-radius-full: 9999px;
  --border-width-thin: 1px;
  --border-width-thick: 2px;
  
  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
  --shadow-inner: inset 0 2px 4px rgba(0, 0, 0, 0.05);
  
  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-normal: 300ms ease-in-out;
  --transition-slow: 500ms ease-in-out;
  
  /* Z-index */
  --z-index-dropdown: 1000;
  --z-index-sticky: 1020;
  --z-index-fixed: 1030;
  --z-index-modal-backdrop: 1040;
  --z-index-modal: 1050;
  --z-index-tooltip: 1060;
  
  /* Breakpoints */
  --breakpoint-sm: 576px;
  --breakpoint-md: 768px;
  --breakpoint-lg: 992px;
  --breakpoint-xl: 1200px;
  
  /* Container Widths */
  --container-max-width: 1200px;
  --container-padding: var(--spacing-md);
}

/* ============================
   Reset & Base Styles
   ============================ */
*,
*::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);
  font-weight: var(--font-weight-normal);
  line-height: var(--line-height-normal);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  margin-bottom: var(--spacing-md);
}

h1 {
  font-size: var(--font-size-3xl);
}

h2 {
  font-size: var(--font-size-2xl);
}

h3 {
  font-size: var(--font-size-xl);
}

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

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

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

ul, ol {
  margin-bottom: var(--spacing-md);
  padding-left: var(--spacing-xl);
}

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

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  line-height: inherit;
}

button {
  cursor: pointer;
}

/* Accessibility - Focus Styles */
.user-is-tabbing :focus {
  outline: var(--border-width-thick) solid var(--color-accent);
  outline-offset: 2px;
}

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

.reduced-motion * {
  animation-duration: 0.01ms !important;
  animation-iteration-count: 1 !important;
  transition-duration: 0.01ms !important;
  scroll-behavior: auto !important;
}

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

.skip-link {
  background-color: var(--color-accent);
  border-radius: 0 0 var(--border-radius-md) var(--border-radius-md);
  color: var(--color-background);
  font-weight: var(--font-weight-bold);
  left: 0.5rem;
  padding: var(--spacing-sm) var(--spacing-md);
  position: absolute;
  text-decoration: none;
  top: -100px;
  transition: top var(--transition-fast);
  z-index: var(--z-index-fixed);
}

.skip-link:focus {
  outline: none;
  top: 0;
}

/* Container */
.header__container,
.hero__container,
.about__container,
.benefits__container,
.use-cases__container,
.testimonials__container,
.contact__container,
.faq__container,
.footer__container,
.legal-page__container,
.success-page__container {
  margin: 0 auto;
  max-width: var(--container-max-width);
  padding: 0 var(--container-padding);
  width: 100%;
}

/* Section Title */
.section-title {
  color: var(--color-text);
  margin-bottom: var(--spacing-xl);
  position: relative;
  text-align: center;
}

.section-title::after {
  background-color: var(--color-accent);
  bottom: -10px;
  content: '';
  height: 4px;
  left: 50%;
  position: absolute;
  transform: translateX(-50%);
  width: 60px;
}

/* Button */
.button {
  align-items: center;
  background-color: transparent;
  border: none;
  border-radius: var(--border-radius-md);
  display: inline-flex;
  font-weight: var(--font-weight-bold);
  justify-content: center;
  padding: var(--spacing-md) var(--spacing-xl);
  text-decoration: none;
  transition: all var(--transition-fast);
}

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

.button--primary:hover, .button--primary:focus {
  background-color: var(--color-accent-dark);
  color: var(--color-background);
  text-decoration: none;
}

.button--secondary {
  background-color: transparent;
  border: var(--border-width-thin) solid var(--color-accent);
  color: var(--color-accent);
}

.button--secondary:hover, .button--secondary:focus {
  background-color: var(--color-accent-light);
  border-color: var(--color-accent-dark);
  color: var(--color-background);
  text-decoration: none;
}

/* ============================
   Header
   ============================ */
.header {
  background-color: var(--color-background);
  box-shadow: var(--shadow-sm);
  left: 0;
  position: fixed;
  right: 0;
  top: 0;
  z-index: var(--z-index-fixed);
}

.header__container {
  align-items: center;
  display: flex;
  height: 70px;
  justify-content: space-between;
}

.header__logo-link {
  display: block;
}

.header__logo {
  height: 40px;
  width: auto;
}

.header__menu-toggle {
  background: none;
  border: none;
  color: var(--color-text);
  display: flex;
  padding: var(--spacing-sm);
  z-index: 2;
}

.header__nav {
  background-color: var(--color-background);
  display: none;
  height: 100vh;
  left: 0;
  padding: 100px var(--spacing-xl) var(--spacing-xl);
  position: fixed;
  top: 0;
  width: 100%;
}

.header__nav--active {
  display: block;
}

.header__nav-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

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

.header__nav-link {
  color: var(--color-text);
  display: block;
  font-size: var(--font-size-lg);
  padding: var(--spacing-sm) 0;
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

@media (min-width: 768px) {
  .header__menu-toggle {
    display: none;
  }
  
  .header__nav {
    background-color: transparent;
    display: block;
    height: auto;
    padding: 0;
    position: static;
    width: auto;
  }
  
  .header__nav-list {
    display: flex;
  }
  
  .header__nav-item {
    margin: 0 0 0 var(--spacing-lg);
  }
  
  .header__nav-link {
    font-size: var(--font-size-base);
    padding: var(--spacing-sm);
  }
}

/* ============================
   Hero Section
   ============================ */
.hero {
  padding: 120px 0 var(--spacing-3xl);
}

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

.hero__content {
  margin-bottom: var(--spacing-xl);
  max-width: 600px;
}

.hero__title {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--spacing-md);
}

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

.hero__image-container {
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  width: 100%;
  max-width: 500px;
}

.hero__image {
  display: block;
  height: auto;
  width: 100%;
}

@media (min-width: 992px) {
  .hero {
    padding: 140px 0 var(--spacing-4xl);
  }
  
  .hero__container {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
  
  .hero__content {
    margin-bottom: 0;
    margin-right: var(--spacing-xl);
  }
  
  .hero__title {
    font-size: var(--font-size-4xl);
  }
}

/* ============================
   About Section
   ============================ */
.about {
  background-color: var(--color-border-light);
  padding: var(--spacing-3xl) 0;
}

.about__content {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xl);
}

.about__text {
  max-width: 600px;
}

.about__image-container {
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  width: 100%;
}

.about__image {
  display: block;
  height: auto;
  width: 100%;
}

@media (min-width: 992px) {
  .about__content {
    align-items: center;
    flex-direction: row;
    justify-content: space-between;
  }
  
  .about__text {
    flex: 1;
    margin-right: var(--spacing-xl);
  }
  
  .about__image-container {
    flex: 1;
  }
}

/* ============================
   Benefits Section
   ============================ */
.benefits {
  padding: var(--spacing-3xl) 0;
}

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

.benefit-card {
  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);
}

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

.benefit-card__icon {
  background-color: var(--color-accent-light);
  border-radius: var(--border-radius-full);
  color: var(--color-accent-dark);
  display: inline-flex;
  font-size: 2rem !important;
  height: 60px;
  justify-content: center;
  line-height: 45px !important;
  margin-bottom: var(--spacing-md);
  padding: var(--spacing-sm);
  width: 60px;
}

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

.benefit-card__text {
  color: var(--color-text-light);
  margin-bottom: 0;
}

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

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

/* ============================
   Use Cases Section
   ============================ */
.use-cases {
  background-color: var(--color-border-light);
  padding: var(--spacing-3xl) 0;
}

.use-cases__grid {
  display: grid;
  gap: var(--spacing-lg);
  grid-template-columns: 1fr;
}

.use-case-card {
  background-color: var(--color-background);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  transition: transform var(--transition-normal);
}

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

.use-case-card__image {
  display: block;
  height: 200px;
  object-fit: cover;
  width: 100%;
}

.use-case-card__title {
  font-size: var(--font-size-lg);
  margin: var(--spacing-md) var(--spacing-md) var(--spacing-sm);
}

.use-case-card__text {
  color: var(--color-text-light);
  margin: 0 var(--spacing-md) var(--spacing-md);
}

@media (min-width: 768px) {
  .use-cases__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ============================
   Visual Separator
   ============================ */
.visual-separator {
  height: 300px;
  overflow: hidden;
  position: relative;
  width: 100%;
}

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

.visual-separator__overlay {
  align-items: center;
  background-color: rgba(0, 0, 0, 0.5);
  display: flex;
  height: 100%;
  justify-content: center;
  left: 0;
  padding: var(--spacing-lg);
  position: absolute;
  top: 0;
  width: 100%;
}

.visual-separator__text {
  color: var(--color-background);
  font-size: var(--font-size-2xl);
  margin: 0;
  max-width: 800px;
  text-align: center;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}

@media (min-width: 992px) {
  .visual-separator {
    height: 400px;
  }
  
  .visual-separator__text {
    font-size: var(--font-size-3xl);
  }
}

/* ============================
   Testimonials Section
   ============================ */
.testimonials {
  padding: var(--spacing-3xl) 0;
}

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

.testimonial {
  display: none;
}

.testimonial__content {
  background-color: var(--color-background);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
  padding: var(--spacing-xl);
  position: relative;
}

.testimonial__content::before {
  color: var(--color-accent-light);
  content: '"';
  font-family: var(--font-heading);
  font-size: 5rem;
  left: var(--spacing-md);
  line-height: 1;
  opacity: 0.2;
  position: absolute;
  top: var(--spacing-sm);
}

.testimonial__text {
  font-style: italic;
  margin-bottom: var(--spacing-lg);
  position: relative;
  z-index: 1;
}

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

.testimonial__author-image {
  border-radius: var(--border-radius-full);
  height: 60px;
  margin-right: var(--spacing-md);
  object-fit: cover;
  width: 60px;
}

.testimonial__author-name {
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-xs);
}

.testimonial__author-title {
  color: var(--color-text-light);
  font-size: var(--font-size-sm);
  margin: 0;
}

.testimonial-controls {
  display: flex;
  justify-content: center;
  margin-top: var(--spacing-lg);
}

.testimonial-controls__button {
  align-items: center;
  background-color: var(--color-background);
  border: var(--border-width-thin) solid var(--color-border);
  border-radius: var(--border-radius-full);
  color: var(--color-text);
  display: flex;
  height: 40px;
  justify-content: center;
  margin: 0 var(--spacing-sm);
  transition: all var(--transition-fast);
  width: 40px;
}

.testimonial-controls__button:hover, .testimonial-controls__button:focus {
  background-color: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-background);
}

/* ============================
   Contact Section
   ============================ */
.contact {
  background-color: var(--color-border-light);
  padding: var(--spacing-3xl) 0;
}

.contact__content {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xl);
}

.contact__info {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.contact__info-item {
  align-items: center;
  display: flex;
}

.contact__info-icon {
  color: var(--color-accent);
  margin-right: var(--spacing-md);
}

.contact__info-text {
  margin: 0;
}

.contact__info-link {
  color: var(--color-text);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

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

.contact-form__group {
  display: flex;
  flex-direction: column;
}

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

.contact-form__input {
  background-color: var(--color-background);
  border: var(--border-width-thin) solid var(--color-border);
  border-radius: var(--border-radius-md);
  color: var(--color-text);
  font-size: var(--font-size-base);
  padding: var(--spacing-md);
  transition: border-color var(--transition-fast);
  width: 100%;
}

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

.contact-form__input--error {
  border-color: var(--color-error);
}

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

.contact-form__error {
  color: var(--color-error);
  font-size: var(--font-size-sm);
  margin-top: var(--spacing-xs);
}

.contact-form__submit {
  align-self: flex-start;
  margin-top: var(--spacing-sm);
}

@media (min-width: 992px) {
  .contact__content {
    flex-direction: row;
  }
  
  .contact__info {
    flex: 1;
    margin-right: var(--spacing-xl);
  }
  
  .contact-form {
    flex: 2;
  }
}

/* ============================
   FAQ Section
   ============================ */
.faq {
  padding: var(--spacing-3xl) 0;
}

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

.faq-item {
  background-color: var(--color-background);
  border: var(--border-width-thin) solid var(--color-border);
  border-radius: var(--border-radius-md);
  margin-bottom: var(--spacing-md);
  overflow: hidden;
}

.faq-item__question {
  align-items: center;
  background-color: var(--color-background);
  border: none;
  cursor: pointer;
  display: flex;
  font-size: var(--font-size-base);
  justify-content: space-between;
  padding: var(--spacing-lg);
  text-align: left;
  width: 100%;
}

.faq-item__question-text {
  font-weight: var(--font-weight-bold);
}

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

.faq-item__question[aria-expanded="true"] .faq-item__icon {
  transform: rotate(180deg);
}

.faq-item__answer {
  max-height: 0;
  overflow: hidden;
  padding: 0 var(--spacing-lg);
  transition: max-height var(--transition-normal);
}

.faq-item__question[aria-expanded="true"] + .faq-item__answer {
  padding-bottom: var(--spacing-lg);
}

/* ============================
   Footer
   ============================ */
.footer {
  background-color: var(--color-text);
  color: var(--color-background);
  padding: var(--spacing-3xl) 0 var(--spacing-md);
}

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

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

.footer__logo {
  background-color: var(--color-background);
  border-radius: var(--border-radius-sm);
  height: 40px;
  margin-bottom: var(--spacing-md);
  padding: 0.25rem;
  width: auto;
}

.footer__slogan {
  color: var(--color-text-lighter);
  font-style: italic;
}

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

.footer__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer__item {
  margin-bottom: var(--spacing-sm);
}

.footer__link {
  color: var(--color-text-lighter);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

.footer__address {
  font-style: normal;
}

.footer__address-line {
  color: var(--color-text-lighter);
  margin-bottom: var(--spacing-xs);
}

.footer__bottom {
  border-top: var(--border-width-thin) solid rgba(255, 255, 255, 0.1);
  margin-top: var(--spacing-xl);
  padding-top: var(--spacing-lg);
  text-align: center;
}

.footer__copyright {
  color: var(--color-text-lighter);
  font-size: var(--font-size-sm);
  margin: 0;
}

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

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

/* ============================
   Back to Top Button
   ============================ */
.back-to-top {
  align-items: center;
  background-color: var(--color-accent);
  border: none;
  border-radius: var(--border-radius-full);
  bottom: var(--spacing-lg);
  box-shadow: var(--shadow-md);
  color: var(--color-background);
  display: flex;
  height: 50px;
  justify-content: center;
  opacity: 1;
  position: fixed;
  right: var(--spacing-lg);
  transition: all var(--transition-normal);
  visibility: visible;
  width: 50px;
  z-index: var(--z-index-fixed);
}

.back-to-top--hidden {
  opacity: 0;
  visibility: hidden;
}

.back-to-top:hover, .back-to-top:focus {
  background-color: var(--color-accent-dark);
  transform: translateY(-5px);
}

/* ============================
   Legal Pages
   ============================ */
.legal-page {
  padding: 120px 0 var(--spacing-3xl);
}

.legal-page__title {
  margin-bottom: var(--spacing-2xl);
  text-align: center;
}

.legal-section {
  margin-bottom: var(--spacing-2xl);
}

.legal-section__title {
  color: var(--color-accent-dark);
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-md);
}

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

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

.legal-section address {
  border-left: 4px solid var(--color-accent-light);
  margin: var(--spacing-md) 0;
  padding: var(--spacing-md);
}

/* ============================
   Success Page
   ============================ */
.success-page {
  padding: 120px 0 var(--spacing-3xl);
}

.success-message {
  align-items: center;
  background-color: var(--color-background);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  margin: 0 auto;
  max-width: 600px;
  padding: var(--spacing-2xl);
  text-align: center;
}

.success-message__icon {
  color: var(--color-success);
  font-size: 4rem !important;
  margin-bottom: var(--spacing-lg);
}

.success-message__title {
  margin-bottom: var(--spacing-md);
}

.success-message__text {
  color: var(--color-text-light);
  margin-bottom: var(--spacing-xl);
}

.success-message__button {
  margin-top: var(--spacing-md);
}

/* ============================
   Media Queries
   ============================ */
@media (min-width: 576px) {
  :root {
    --container-padding: var(--spacing-lg);
  }
}

@media (min-width: 768px) {
  h1 {
    font-size: var(--font-size-4xl);
  }
  
  h2 {
    font-size: var(--font-size-3xl);
  }
  
  h3 {
    font-size: var(--font-size-2xl);
  }
}

@media (min-width: 992px) {
  :root {
    --container-padding: var(--spacing-xl);
  }
}

@media (min-width: 1200px) {
  :root {
    --container-padding: var(--spacing-2xl);
  }
}