/* ================================================
   MAIN STYLES
   Luxury Resale Platform - Valencia, Spain
   Modern CSS with best practices 2025
   ================================================ */

/* === IMPORTS === */
@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:wght@400;500;600;700&family=Libre+Franklin:wght@300;400;500;600;700&display=swap');

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

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

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

/* === TYPOGRAPHY === */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-primary);
  font-weight: var(--font-weight-medium);
  line-height: var(--line-height-tight);
  letter-spacing: var(--letter-spacing-tight);
  margin-bottom: var(--space-md);
  color: var(--color-text-primary);
}

h1 { font-size: var(--font-size-3xl); font-weight: var(--font-weight-semibold); }
h2 { font-size: var(--font-size-2xl); }
h3 { font-size: var(--font-size-xl); }
h4 { font-size: var(--font-size-lg); }

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

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

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

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

.container-narrow {
  max-width: var(--container-lg);
}

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

.section-sm {
  padding: var(--space-2xl) 0;
}

/* === HEADER === */
.header {
  position: sticky;
  top: 0;
  background: linear-gradient(180deg, #0d0d0d 0%, #1a1a1a 100%);
  border-bottom: 1px solid rgba(201, 169, 97, 0.2);
  z-index: var(--z-index-sticky);
  transition: all var(--transition-base);
}

.header--scrolled {
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
  background: linear-gradient(180deg, #0d0d0d 0%, #1a1a1a 100%);
  backdrop-filter: blur(12px);
}

.header__container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-lg) var(--space-lg);
  max-width: var(--container-2xl);
  margin: 0 auto;
}

.header__logo {
  font-family: var(--font-primary);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  letter-spacing: var(--letter-spacing-wide);
  color: #c9a961 !important;
  transition: all var(--transition-base);
  text-shadow: 0 0 20px rgba(201, 169, 97, 0.3);
}

.header__logo:hover {
  color: #d4b978 !important;
  text-shadow: 0 0 30px rgba(201, 169, 97, 0.5);
}

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

/* Header navigation links */
.header .nav__link,
.header--scrolled .nav__link {
  color: #f5f5f5 !important;
  font-weight: var(--font-weight-medium);
  letter-spacing: 0.1em;
  position: relative;
}

.header .nav__link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: linear-gradient(90deg, #c9a961 0%, #d4b978 100%);
  transition: width var(--transition-base);
}

.header .nav__link:hover::after {
  width: 100%;
}

.header .nav__link:hover,
.header--scrolled .nav__link:hover {
  color: #c9a961 !important;
}

/* Header buttons */
.header .btn-secondary,
.header--scrolled .btn-secondary {
  color: #f5f5f5 !important;
  border-color: rgba(245, 245, 245, 0.3) !important;
  background: transparent !important;
}

.header .btn-secondary:hover,
.header--scrolled .btn-secondary:hover {
  border-color: #c9a961 !important;
  background: rgba(201, 169, 97, 0.1) !important;
}

.header .btn-secondary svg,
.header--scrolled .btn-secondary svg {
  stroke: #f5f5f5 !important;
}

.header .btn-secondary:hover svg,
.header--scrolled .btn-secondary:hover svg {
  stroke: #c9a961 !important;
}

.nav__list {
  display: flex;
  gap: var(--space-lg);
  list-style: none;
}

.nav__link {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  letter-spacing: var(--letter-spacing-wide);
  text-transform: uppercase;
  padding: var(--space-xs) 0;
  position: relative;
  transition: color var(--transition-base);
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-xs);
  z-index: 100;
}

.menu-toggle span {
  width: 24px;
  height: 2px;
  background-color: #f5f5f5;
  transition: all var(--transition-base);
}

.menu-toggle:hover span {
  background-color: #c9a961;
}

.menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* === HERO SECTION === */
.hero {
  position: relative;
  height: 90vh;
  min-height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: 
    linear-gradient(135deg, rgba(26, 26, 26, 0.03) 0%, rgba(201, 169, 97, 0.05) 100%),
    radial-gradient(circle at 20% 80%, rgba(201, 169, 97, 0.08) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(26, 26, 26, 0.05) 0%, transparent 50%);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M30 0L30 60M0 30L60 30' stroke='%23c9a961' stroke-width='0.5' opacity='0.1'/%3E%3C/svg%3E");
  opacity: 0.3;
  pointer-events: none;
}

.hero__content {
  text-align: center;
  max-width: 900px;
  padding: 0 var(--space-lg);
  z-index: 2;
}

.hero__title {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--space-lg);
  animation: fadeInUp 0.8s ease-out;
}

.hero__subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-2xl);
  font-family: var(--font-secondary);
  font-weight: var(--font-weight-normal);
  animation: fadeInUp 0.8s ease-out 0.2s both;
}

.hero__cta {
  display: inline-flex;
  gap: var(--space-md);
  animation: fadeInUp 0.8s ease-out 0.4s both;
}

/* === BUTTONS === */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  padding: var(--space-md) var(--space-xl);
  font-family: var(--font-secondary);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  letter-spacing: var(--letter-spacing-wide);
  text-transform: uppercase;
  text-align: center;
  border: var(--border-width-medium) solid transparent;
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  transition: all var(--transition-base);
  white-space: nowrap;
  text-decoration: none;
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-text-inverse);
  border-color: var(--color-primary);
}

.btn-primary:hover {
  background-color: var(--color-primary-light);
  border-color: var(--color-primary-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  color: var(--color-text-inverse);
}

.btn-secondary {
  background-color: transparent;
  color: #1a1a1a !important;
  border-color: #e5e5e5;
}

.btn-secondary svg {
  stroke: #1a1a1a !important;
}

.btn-secondary:hover {
  background-color: #f5f5f3;
  border-color: #1a1a1a;
  color: #1a1a1a !important;
}

.btn-secondary:hover svg {
  stroke: #c9a961 !important;
}

.btn-accent {
  background-color: var(--color-secondary);
  color: var(--color-text-inverse);
  border-color: var(--color-secondary);
}

.btn-accent:hover {
  background-color: var(--color-secondary-light);
  border-color: var(--color-secondary-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

/* === CATEGORY SECTION === */
.categories {
  background-color: var(--color-background-alt);
}

.categories__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-xl);
  margin-top: var(--space-2xl);
}

.category-card {
  position: relative;
  height: 400px;
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  cursor: pointer;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.category-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-2xl);
}

.category-card__image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.category-card:hover .category-card__image {
  transform: scale(1.05);
}

.category-card__overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--space-xl);
  background: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
  color: var(--color-text-inverse);
}

.category-card__title {
  font-size: var(--font-size-xl);
  color: var(--color-text-inverse);
  margin-bottom: var(--space-xs);
}

.category-card__count {
  font-size: var(--font-size-sm);
  color: rgba(255,255,255,0.8);
  letter-spacing: var(--letter-spacing-wide);
}

/* === SECTION HEADER === */
.section-header {
  text-align: center;
  margin-bottom: var(--space-3xl);
}

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

.section-header__subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  max-width: 700px;
  margin: 0 auto;
}

/* === ABOUT SECTION === */
.about-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--space-xl);
  margin-top: var(--space-2xl);
}

.about-card {
  background-color: var(--color-background);
  padding: var(--space-xl);
  border-radius: var(--border-radius-lg);
  text-align: center;
  transition: all var(--transition-base);
  border: 1px solid var(--color-border-light);
}

.about-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
  border-color: var(--color-secondary);
}

.about-card__icon {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  border-radius: var(--border-radius-lg);
  transition: all var(--transition-base);
}

.about-card:hover .about-card__icon {
  background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-secondary-light) 100%);
  transform: scale(1.1);
}

.about-card__icon svg {
  width: 32px;
  height: 32px;
  color: var(--color-text-inverse);
}

.about-card__title {
  font-family: var(--font-primary);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-md);
  color: var(--color-text-primary);
}

.about-card__text {
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  font-size: var(--font-size-sm);
}

/* === FOOTER === */
.footer {
  background-color: var(--color-primary);
  color: var(--color-text-inverse);
  padding: var(--space-3xl) var(--space-lg) var(--space-xl);
}

.footer__content {
  max-width: var(--container-xl);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-2xl);
  margin-bottom: var(--space-2xl);
}

.footer__section-title {
  font-family: var(--font-primary);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-lg);
  color: var(--color-text-inverse);
}

.footer__links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.footer__link {
  color: rgba(255, 255, 255, 0.7);
  transition: color var(--transition-base);
}

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

.footer__bottom {
  text-align: center;
  padding-top: var(--space-xl);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.6);
  font-size: var(--font-size-sm);
}

/* === ANIMATIONS === */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

/* === UTILITY CLASSES === */
.text-center { text-align: center; }
.text-uppercase { text-transform: uppercase; }
.text-accent { color: var(--color-secondary); }

.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }

.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }

/* === RESPONSIVE === */
@media (max-width: 1024px) {
  .header__nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 300px;
    height: 100vh;
    background: linear-gradient(180deg, #0d0d0d 0%, #1a1a1a 100%);
    flex-direction: column;
    padding: var(--space-3xl) var(--space-lg);
    box-shadow: -10px 0 40px rgba(0, 0, 0, 0.5);
    transition: right var(--transition-smooth);
    z-index: 99;
    border-left: 1px solid rgba(201, 169, 97, 0.2);
  }
  
  .header__nav .nav__link {
    color: #f5f5f5 !important;
    font-size: var(--font-size-lg);
  }
  
  .header__nav .nav__link:hover {
    color: #c9a961 !important;
  }
  
  .header__nav.active {
    right: 0;
  }
  
  .nav__list {
    flex-direction: column;
    gap: var(--space-lg);
  }
  
  .menu-toggle {
    display: flex;
  }
}

@media (max-width: 640px) {
  .hero {
    height: auto;
    min-height: 60vh;
    padding: var(--space-3xl) var(--space-md);
  }
  
  .hero__title {
    font-size: var(--font-size-xl);
  }
  
  .hero__subtitle {
    font-size: var(--font-size-base);
  }
  
  .hero__cta {
    flex-direction: column;
    width: 100%;
    gap: var(--space-sm);
  }
  
  .btn {
    width: 100%;
  }
  
  .categories__grid {
    grid-template-columns: 1fr;
  }
  
  .category-card {
    height: 280px;
  }
  
  .footer__content {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .section {
    padding: var(--space-2xl) 0;
  }
  
  .section-header__title {
    font-size: var(--font-size-xl);
  }
  
  .about-grid {
    gap: var(--space-md);
  }
  
  .about-card {
    padding: var(--space-lg);
  }
}

/* Extra small screens */
@media (max-width: 359px) {
  .hero__title {
    font-size: var(--font-size-lg);
  }
  
  .hero__subtitle {
    font-size: var(--font-size-sm);
  }
  
  .header__logo {
    font-size: var(--font-size-base);
  }
  
  .category-card {
    height: 220px;
  }
  
  .category-card__title {
    font-size: var(--font-size-lg);
  }
}

/* Scroll margin for anchor navigation */
[id] {
  scroll-margin-top: 100px;
}

/* iOS Safe Area Support */
@supports (padding: max(0px)) {
  .header__container {
    padding-left: max(var(--space-lg), env(safe-area-inset-left));
    padding-right: max(var(--space-lg), env(safe-area-inset-right));
  }
  
  .footer {
    padding-bottom: max(var(--space-xl), env(safe-area-inset-bottom));
  }
  
  @media (max-width: 1024px) {
    .header__nav {
      padding-top: max(var(--space-3xl), env(safe-area-inset-top));
      padding-right: max(var(--space-lg), env(safe-area-inset-right));
    }
  }
}

/* Touch device optimizations */
@media (hover: none) {
  .category-card:hover {
    transform: none;
  }
  
  .category-card:hover .category-card__image {
    transform: none;
  }
  
  .about-card:hover {
    transform: none;
    box-shadow: var(--shadow-md);
  }
}

/* Header actions visibility on mobile */
@media (max-width: 1024px) {
  .header__actions {
    display: none !important;
  }
  
  .header__nav .header__actions {
    display: flex !important;
    margin-top: var(--space-xl);
    padding-top: var(--space-xl);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
  }
}

/* Landscape phone optimization */
@media (max-height: 500px) and (orientation: landscape) {
  .hero {
    height: auto;
    min-height: auto;
    padding: var(--space-xl) var(--space-lg);
  }
  
  .hero__title {
    font-size: var(--font-size-xl);
  }
  
  .hero__subtitle {
    margin-bottom: var(--space-lg);
  }
}