/* 
* Halvernia Gym - Main Stylesheet
* Mobile-first, BEM methodology
*/

/* ===== VARIABLES ===== */
:root {
  /* Colors */
  --color-bg: #121212;
  --color-accent: #FF3C38;
  --color-text: #E5E5E5;
  --color-card: #1F1F1F;
  --color-button: #FFB400;
  --color-button-hover: #E6A300;
  --color-error: #FF3C38;
  --color-success: #4CAF50;
  --color-overlay: rgba(0, 0, 0, 0.7);
  
  /* Typography */
  --font-primary: 'Anton', sans-serif;
  --font-secondary: 'Montserrat', sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-md: 1rem;
  --font-size-lg: 1.25rem;
  --font-size-xl: 1.5rem;
  --font-size-2xl: 2rem;
  --font-size-3xl: 2.5rem;
  --font-size-4xl: 3rem;
  
  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;
  
  /* Borders */
  --border-radius: 0;
  --border-width: 2px;
  
  /* Shadows */
  --shadow-sm: 0 4px 6px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 15px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 12px 24px rgba(0, 0, 0, 0.5);
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-medium: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Z-index layers */
  --z-index-base: 1;
  --z-index-dropdown: 10;
  --z-index-sticky: 50;
  --z-index-fixed: 100;
  --z-index-modal: 1000;
  
  /* Breakpoints */
  --breakpoint-sm: 576px;
  --breakpoint-md: 768px;
  --breakpoint-lg: 992px;
  --breakpoint-xl: 1200px;
}

/* ===== RESET & BASE STYLES ===== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

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

h1, h2, h3, h4, h5, h6 {
  font-weight: 400;
}

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

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

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

ul {
  list-style: none;
}

button {
  background: none;
  border: none;
  cursor: pointer;
  font-family: inherit;
}

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

option {
  color: var(--color-bg);
}

/* ===== ACCESSIBILITY ===== */
.skip-link {
  background-color: var(--color-button);
  color: var(--color-bg);
  font-weight: 400;
  left: -9999px;
  padding: var(--space-md) var(--space-lg);
  position: absolute;
  top: 0;
  z-index: var(--z-index-fixed);
}

.skip-link:focus {
  left: 0;
}

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

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

.section {
  padding: var(--space-3xl) 0;
}

.section--dark {
  background-color: var(--color-card);
}

.section__title {
  font-family: var(--font-primary);
  font-size: var(--font-size-3xl);
  margin-bottom: var(--space-md);
  text-align: center;
  text-transform: uppercase;
}

.section__subtitle {
  color: var(--color-text);
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-2xl);
  text-align: center;
}

/* ===== HEADER & NAVIGATION ===== */
.header {
  background-color: var(--color-bg);
  left: 0;
  padding: var(--space-md) 0;
  position: fixed;
  right: 0;
  top: 0;
  transition: background-color var(--transition-medium);
  z-index: var(--z-index-sticky);
}

.header--scrolled {
  background-color: rgba(18, 18, 18, 0.95);
  box-shadow: var(--shadow-md);
}

.header__container {
  align-items: center;
  display: flex;
  justify-content: space-between;
  margin: 0 auto;
  max-width: 1200px;
  padding: 0 var(--space-lg);
}

.logo {
  display: block;
  height: 40px;
  width: auto;
}

.logo img {
  height: 100%;
  width: auto;
}

.nav__toggle {
  background-color: transparent;
  color: var(--color-text);
  display: block;
  font-size: var(--font-size-2xl);
  padding: var(--space-sm);
  z-index: var(--z-index-dropdown);
}

.nav__menu {
  background-color: var(--color-bg);
  display: none;
  flex-direction: column;
  height: 100vh;
  left: 0;
  padding: var(--space-4xl) var(--space-lg) var(--space-lg);
  position: fixed;
  right: 0;
  top: 0;
  z-index: var(--z-index-base);
}

.nav__menu--open {
  display: flex;
}

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

.nav__link {
  display: block;
  font-family: var(--font-primary);
  font-size: var(--font-size-xl);
  font-weight: 400;
  letter-spacing: 1px;
  text-transform: uppercase;
  transition: color var(--transition-fast);
}

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

.nav__link--highlight {
  color: var(--color-button);
}

.nav__link--highlight:hover, .nav__link--highlight:focus {
  color: var(--color-button-hover);
}

/* ===== HERO SECTION ===== */
.hero {
  height: 100vh;
  margin-top: 60px;
  min-height: 600px;
  position: relative;
  width: 100%;
}

.hero__slider {
  height: 100%;
  position: relative;
  width: 100%;
}

.hero__slide {
  align-items: center;
  display: none;
  height: 100%;
  justify-content: center;
  left: 0;
  opacity: 0;
  position: absolute;
  top: 0;
  transition: opacity var(--transition-slow);
  width: 100%;
}

.hero__slide--active {
  display: flex;
  opacity: 1;
  z-index: var(--z-index-base);
}

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

.hero__content {
  background-color: var(--color-overlay);
  max-width: 800px;
  padding: var(--space-2xl);
  position: relative;
  text-align: center;
  z-index: var(--z-index-base);
}

.hero__title {
  font-family: var(--font-primary);
  font-size: var(--font-size-3xl);
  margin-bottom: var(--space-md);
  text-transform: uppercase;
}

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

.hero__arrow {
  background-color: rgba(0, 0, 0, 0.5);
  border-radius: 50%;
  color: var(--color-text);
  height: 50px;
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 50px;
  z-index: var(--z-index-base);
}

.hero__arrow:hover, .hero__arrow:focus {
  background-color: var(--color-accent);
}

.hero__arrow--prev {
  left: var(--space-lg);
}

.hero__arrow--next {
  right: var(--space-lg);
}

.hero__dots {
  bottom: var(--space-xl);
  display: flex;
  justify-content: center;
  left: 0;
  position: absolute;
  right: 0;
  z-index: var(--z-index-base);
}

.hero__dot {
  background-color: var(--color-text);
  border-radius: 50%;
  height: 12px;
  margin: 0 var(--space-xs);
  opacity: 0.5;
  transition: opacity var(--transition-fast), transform var(--transition-fast);
  width: 12px;
}

.hero__dot--active {
  opacity: 1;
  transform: scale(1.2);
}

.hero__dot:hover, .hero__dot:focus {
  opacity: 1;
}

/* ===== BUTTONS ===== */
.button {
  background-color: var(--color-button);
  border: none;
  color: var(--color-bg);
  cursor: pointer;
  display: inline-block;
  font-family: var(--font-primary);
  font-size: var(--font-size-md);
  font-weight: 400;
  letter-spacing: 1px;
  padding: var(--space-md) var(--space-xl);
  text-align: center;
  text-transform: uppercase;
  transition: background-color var(--transition-fast), transform var(--transition-fast);
}

.button:hover, .button:focus {
  background-color: var(--color-button-hover);
  color: var(--color-bg);
  transform: translateY(-3px);
}

.button--large {
  font-size: var(--font-size-lg);
  padding: var(--space-lg) var(--space-2xl);
}

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

.button--outline:hover, .button--outline:focus {
  background-color: var(--color-button);
  color: var(--color-bg);
}

/* ===== FACILITIES SECTION ===== */
.facilities__grid {
  display: grid;
  gap: var(--space-lg);
  grid-template-columns: 1fr;
  margin-bottom: var(--space-xl);
}

.facility-card {
  background-color: var(--color-card);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  position: relative;
  transition: transform var(--transition-medium);
}

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

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

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

.facility-card__title {
  font-family: var(--font-primary);
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-sm);
}

.facility-card__description {
  color: var(--color-text);
  font-size: var(--font-size-md);
}

.facilities__cta {
  text-align: center;
}

/* ===== TRAINERS SECTION ===== */
.trainers__grid {
  display: grid;
  gap: var(--space-lg);
  grid-template-columns: 1fr;
}

.trainer-card {
  background-color: var(--color-bg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  position: relative;
  transition: transform var(--transition-medium);
}

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

.trainer-card__image {
  height: 300px;
  object-fit: cover;
  width: 100%;
}

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

.trainer-card__name {
  font-family: var(--font-primary);
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-xs);
}

.trainer-card__specialty {
  color: var(--color-accent);
  font-size: var(--font-size-md);
  font-weight: 400;
  margin-bottom: var(--space-sm);
}

.trainer-card__description {
  color: var(--color-text);
  font-size: var(--font-size-md);
}

/* ===== MEMBERSHIP SECTION ===== */
.membership__grid {
  display: grid;
  gap: var(--space-lg);
  grid-template-columns: 1fr;
}

.membership-card {
  background-color: var(--color-card);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  transition: transform var(--transition-medium);
}

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

.membership-card--featured {
  border: 2px solid var(--color-accent);
  position: relative;
  z-index: var(--z-index-base);
}

.membership-card__header {
  background-color: var(--color-bg);
  padding: var(--space-lg);
  text-align: center;
}

.membership-card__title {
  font-family: var(--font-primary);
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-sm);
}

.membership-card__price {
  color: var(--color-button);
  font-family: var(--font-primary);
  font-size: var(--font-size-2xl);
}

.membership-card__price span {
  font-size: var(--font-size-md);
  opacity: 0.8;
}

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

.membership-card__features {
  margin-bottom: var(--space-lg);
}

.membership-card__features li {
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  margin-bottom: var(--space-sm);
  padding-bottom: var(--space-sm);
  position: relative;
}

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

.membership-card__features li::before {
  color: var(--color-accent);
  content: "✓";
  margin-right: var(--space-sm);
}

/* ===== EQUIPMENT SECTION ===== */
.equipment__grid {
  display: grid;
  gap: var(--space-lg);
  grid-template-columns: 1fr;
}

.equipment-card {
  background-color: var(--color-bg);
  box-shadow: var(--shadow-md);
  padding: var(--space-xl);
  text-align: center;
  transition: transform var(--transition-medium);
}

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

.equipment-card__icon {
  color: var(--color-accent);
  font-size: var(--font-size-4xl);
  margin-bottom: var(--space-md);
}

.equipment-card__title {
  font-family: var(--font-primary);
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-md);
}

.equipment-card__description {
  color: var(--color-text);
  font-size: var(--font-size-md);
}

/* ===== TRANSFORMATIONS SECTION ===== */
.transformations__grid {
  display: grid;
  gap: var(--space-lg);
  grid-template-columns: 1fr;
}

.story-card {
  background-color: var(--color-card);
  box-shadow: var(--shadow-md);
  padding: var(--space-xl);
  transition: transform var(--transition-medium);
}

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

.story-card__title {
  font-family: var(--font-primary);
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-md);
}

.story-card__quote {
  border-left: 3px solid var(--color-accent);
  color: var(--color-text);
  font-size: var(--font-size-lg);
  font-style: italic;
  margin-bottom: var(--space-md);
  padding-left: var(--space-md);
}

.story-card__details {
  color: var(--color-accent);
  font-size: var(--font-size-md);
  font-weight: 400;
}

/* ===== SERVICES SECTION ===== */
.services__grid {
  display: grid;
  gap: var(--space-lg);
  grid-template-columns: 1fr;
}

.service-card {
  background-color: var(--color-bg);
  box-shadow: var(--shadow-md);
  padding: var(--space-xl);
  text-align: center;
  transition: transform var(--transition-medium);
}

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

.service-card__icon {
  color: var(--color-accent);
  font-size: var(--font-size-4xl);
  margin-bottom: var(--space-md);
}

.service-card__title {
  font-family: var(--font-primary);
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-md);
}

.service-card__description {
  color: var(--color-text);
  font-size: var(--font-size-md);
}

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

.faq__item {
  background-color: var(--color-card);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  margin-bottom: var(--space-md);
}

.faq__question {
  align-items: center;
  background-color: transparent;
  color: var(--color-text);
  cursor: pointer;
  display: flex;
  font-family: var(--font-primary);
  font-size: var(--font-size-lg);
  justify-content: space-between;
  padding: var(--space-lg);
  text-align: left;
  width: 100%;
}

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

.faq__question[aria-expanded="true"] .faq__icon {
  transform: rotate(180deg);
}

.faq__answer {
  background-color: rgba(255, 255, 255, 0.05);
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-medium);
}

.faq__question[aria-expanded="true"] + .faq__answer {
  max-height: 500px;
  padding: var(--space-lg);
}

/* ===== PRICING SECTION ===== */
.pricing__grid {
  display: grid;
  gap: var(--space-lg);
  grid-template-columns: 1fr;
  margin-bottom: var(--space-xl);
}

.price-card {
  background-color: var(--color-bg);
  box-shadow: var(--shadow-md);
  padding: var(--space-xl);
  text-align: center;
  transition: transform var(--transition-medium);
}

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

.price-card__title {
  font-family: var(--font-primary);
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-md);
}

.price-card__price {
  color: var(--color-button);
  font-family: var(--font-primary);
  font-size: var(--font-size-2xl);
  margin-bottom: var(--space-md);
}

.price-card__description {
  color: var(--color-text);
  font-size: var(--font-size-md);
}

.pricing__cta {
  text-align: center;
}

/* ===== CONTACT SECTION ===== */
.contact__content {
  align-items: start;
  display: flex;
  flex-direction: column;
  gap: var(--space-2xl);
}

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

.contact__block {
  align-items: flex-start;
  display: flex;
}

.contact__icon {
  color: var(--color-accent);
  font-size: var(--font-size-2xl);
  margin-right: var(--space-md);
  margin-top: var(--space-xs);
}

.contact__heading {
  font-family: var(--font-primary);
  font-size: var(--font-size-md);
  margin-bottom: var(--space-xs);
}

.contact-form {
  background-color: var(--color-card);
  box-shadow: var(--shadow-md);
  padding: var(--space-xl);
}

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

.contact-form__label {
  display: block;
  font-family: var(--font-primary);
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-xs);
}

.contact-form__input,
.contact-form__select,
.contact-form__textarea {
  background-color: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--color-text);
  padding: var(--space-md);
  transition: border-color var(--transition-fast);
  width: 100%;
}

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

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

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

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

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

.contact-form__checkbox-label {
  font-size: var(--font-size-sm);
}

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

/* ===== FOOTER ===== */
.footer {
  background-color: var(--color-bg);
  padding: 0 0 var(--space-lg);
}

.footer__content {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: grid;
  gap: var(--space-2xl);
  grid-template-columns: 1fr;
  padding-top: var(--space-3xl);
}

.footer__branding {
  text-align: center;
}

.footer__logo {
  display: inline-block;
  height: 40px;
  margin-bottom: var(--space-md);
}

.footer__slogan {
  font-family: var(--font-primary);
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-md);
}

.footer__address,
.footer__contact {
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-sm);
  opacity: 0.8;
}

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

.footer__heading {
  font-family: var(--font-primary);
  font-size: var(--font-size-md);
  margin-bottom: var(--space-md);
}

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

.footer__list a {
  font-size: var(--font-size-sm);
  opacity: 0.8;
  transition: opacity var(--transition-fast);
}

.footer__list a:hover, .footer__list a:focus {
  opacity: 1;
}

.footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  margin-top: var(--space-2xl);
  padding-top: var(--space-lg);
  text-align: center;
}

.footer__copyright {
  font-size: var(--font-size-sm);
  opacity: 0.6;
}

/* ===== BACK TO TOP BUTTON ===== */
.back-to-top {
  align-items: center;
  background-color: var(--color-accent);
  border-radius: 50%;
  bottom: var(--space-lg);
  color: var(--color-text);
  display: flex;
  height: 50px;
  justify-content: center;
  opacity: 0;
  position: fixed;
  right: var(--space-lg);
  transform: translateY(20px);
  transition: opacity var(--transition-medium), transform var(--transition-medium);
  visibility: hidden;
  width: 50px;
  z-index: var(--z-index-fixed);
}

.back-to-top.visible {
  opacity: 1;
  transform: translateY(0);
  visibility: visible;
}

.back-to-top:hover, .back-to-top:focus {
  background-color: var(--color-button);
  color: var(--color-bg);
}

/* ===== RESPONSIVE STYLES ===== */
@media (min-width: 576px) {
  .hero__title {
    font-size: var(--font-size-4xl);
  }
  
  .facilities__grid,
  .equipment__grid,
  .services__grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .pricing__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 768px) {
  .section__title {
    font-size: var(--font-size-4xl);
  }
  
  .nav__toggle {
    display: none;
  }
  
  .nav__menu {
    background-color: transparent;
    display: flex;
    flex-direction: row;
    height: auto;
    padding: 0;
    position: static;
  }
  
  .nav__item {
    margin-bottom: 0;
    margin-left: var(--space-lg);
  }
  
  .nav__link {
    font-size: var(--font-size-md);
  }
  
  .trainers__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .membership__grid,
  .transformations__grid {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .contact__content {
    flex-direction: row;
  }
  
  .contact__info,
  .contact-form {
    flex: 1;
  }
  
  .footer__content {
    grid-template-columns: 1fr 2fr;
  }
  
  .footer__branding {
    text-align: left;
  }
  
  .footer__links {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 992px) {
  .facilities__grid {
    grid-template-columns: repeat(4, 1fr);
  }
  
  .trainers__grid {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .equipment__grid,
  .services__grid {
    grid-template-columns: repeat(4, 1fr);
  }
  
  .pricing__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ===== DARK MODE SUPPORT ===== */
@media (prefers-color-scheme: dark) {
  /* Already in dark mode, no changes needed */
}

.success-page {
  min-height: calc(100vh - 300px);
}

.success-message {
  padding: var(--space-4xl) 0 var(--space-3xl);
  text-align: center;
}

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

.success-message__text {
  margin-bottom: var(--space-lg);
}

.legal-page {
  padding: var(--space-4xl) 0 var(--space-3xl);
}

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

.legal-content__heading {
  color: var(--color-button);
  font-size: 1.25rem;
  margin-top: var(--space-lg);
}

.legal-content__contact {
  background-color: var(--color-card);
  box-shadow: var(--shadow-md);
  margin: var(--space-lg) 0;
  padding: var(--space-lg);
}

.legal-content__updated {
  color: rgba(255, 255, 255, 0.2);
  font-style: italic;
  text-align: right;
}

.legal-content__table {
  width: 100%;
}

.legal-content__table th,
.legal-content__table td {
  padding: 0.25rem 0.5rem;
}

.legal-content__table th {
  background-color: var(--color-card);
}
.legal-content__table td {
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}