/* ============================================
   OriginArt — Main Stylesheet
   Modern, minimal design for art rental business
   ============================================ */

/* --- CSS Custom Properties (Design Tokens) --- */
:root {
  /* Colors */
  --color-primary: #1a1a2e;        /* Deep navy — main text */
  --color-secondary: #16213e;      /* Dark blue — headings */
  --color-accent: #E8622A;         /* Warm orange — CTA, highlights */
  --color-accent-hover: #D05524;   /* Darker orange for hover */
  --color-light: #f8f9fa;          /* Off-white — backgrounds */
  --color-white: #ffffff;
  --color-gray-100: #f1f3f5;
  --color-gray-200: #e9ecef;
  --color-gray-300: #dee2e6;
  --color-gray-400: #adb5bd;
  --color-gray-500: #6c757d;
  --color-gray-600: #495057;
  --color-gray-700: #343a40;

  /* Typography */
  --font-heading: 'Outfit', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-size-base: 1rem;
  --font-size-sm: 0.875rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.5rem;
  --font-size-2xl: 2rem;
  --font-size-3xl: 2.5rem;
  --font-size-4xl: 3.5rem;

  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 5rem;
  --space-3xl: 8rem;

  /* Layout */
  --max-width: 1200px;
  --border-radius: 8px;
  --border-radius-lg: 16px;

  /* Transitions */
  --transition: 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  line-height: 1.7;
  color: var(--color-primary);
  background-color: var(--color-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

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

ul, ol {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.2;
  color: var(--color-secondary);
}

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

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

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

.text-center {
  text-align: center;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* --- Button Styles --- */
.btn {
  display: inline-block;
  padding: 0.7rem 1.5rem;
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  font-weight: 500;
  border-radius: var(--border-radius);
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  text-align: center;
}

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

.btn--primary:hover {
  background-color: var(--color-accent-hover);
  color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(224, 122, 95, 0.3);
}

.btn--outline {
  background-color: transparent;
  color: var(--color-accent);
  border: 2px solid var(--color-accent);
}

.btn--outline:hover {
  background-color: var(--color-accent);
  color: var(--color-white);
  transform: translateY(-2px);
}

/* --- Header / Navigation --- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-gray-200);
  transition: box-shadow var(--transition);
}

.header--scrolled {
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100px;
}

.header__logo {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  text-decoration: none;
}

.header__logo img {
  height: 60px;
  width: auto;
}

.header__tagline {
  font-family: var(--font-body);
  font-size: 0.8rem;
  color: var(--color-gray-500);
  letter-spacing: 0.35em;
  margin-top: 1px;
}

.header__logo-text {
  font-family: var(--font-heading);
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-secondary);
}

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

.header__nav a {
  color: var(--color-gray-600);
  font-size: var(--font-size-sm);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: var(--space-xs) 0;
  position: relative;
}

.header__nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-accent);
  transition: width var(--transition);
}

.header__nav a:hover,
.header__nav a.active {
  color: var(--color-primary);
}

.header__nav a:hover::after,
.header__nav a.active::after {
  width: 100%;
}

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

.header__toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-primary);
  transition: all var(--transition);
}

/* --- Hero Section --- */
.hero {
  padding-top: calc(100px + var(--space-lg));
  padding-bottom: var(--space-lg);
  background: linear-gradient(135deg, var(--color-light) 0%, var(--color-white) 100%);
}

.hero__content {
  max-width: 700px;
}

.hero__subtitle {
  font-size: var(--font-size-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  margin-bottom: var(--space-sm);
}

.hero__title {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  margin-bottom: var(--space-md);
  color: var(--color-secondary);
}

.hero__description {
  font-size: var(--font-size-lg);
  color: var(--color-gray-600);
  margin-bottom: var(--space-lg);
  max-width: 560px;
}

.hero__actions {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

/* --- USP Section (replaces "6 reasons") --- */
.usps {
  padding: var(--space-2xl) 0;
}

.usps__header {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.usps__header h2 {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--space-sm);
}

.usps__header p {
  color: var(--color-gray-500);
  font-size: var(--font-size-lg);
  max-width: 600px;
  margin: 0 auto;
}

.usps__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.usp-card {
  padding: var(--space-xl);
  border-radius: var(--border-radius-lg);
  background-color: var(--color-white);
  border: 1px solid var(--color-gray-200);
  transition: all var(--transition);
}

.usp-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
  border-color: transparent;
}

.usp-card__icon {
  width: 48px;
  height: 48px;
  margin-bottom: var(--space-md);
  color: var(--color-accent);
}

.usp-card__title {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-xs);
}

.usp-card__text {
  color: var(--color-gray-500);
  font-size: var(--font-size-sm);
  line-height: 1.6;
}

/* --- Artists Preview Section --- */
.artists {
  padding: var(--space-lg) 0 var(--space-2xl);
  background-color: var(--color-light);
}

.artists__header {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.artists__header h2 {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--space-sm);
}

.artists__header p {
  color: var(--color-gray-500);
  font-size: var(--font-size-lg);
}

.artists__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
}

.artist-card {
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  background-color: var(--color-white);
  transition: all var(--transition);
  text-decoration: none;
  color: inherit;
  display: block;
}

.artist-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
}

.artist-card__image {
  width: 100%;
  aspect-ratio: 3 / 4;
  overflow: hidden;
  background-color: var(--color-gray-200);
}

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

.artist-card__info {
  padding: var(--space-md);
}

.artist-card__name {
  font-size: var(--font-size-base);
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.artist-card__style {
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
}

/* --- How It Works Section --- */
.steps {
  padding: var(--space-2xl) 0;
}

.steps__header {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.steps__header h2 {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--space-sm);
}

.steps__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
  counter-reset: step;
}

.step-card {
  text-align: center;
  padding: var(--space-xl) var(--space-md);
  counter-increment: step;
}

.step-card__number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background-color: var(--color-accent);
  color: var(--color-white);
  font-family: var(--font-heading);
  font-size: var(--font-size-xl);
  font-weight: 700;
  margin-bottom: var(--space-md);
}

.step-card__title {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-xs);
}

.step-card__text {
  color: var(--color-gray-500);
  font-size: var(--font-size-sm);
  line-height: 1.6;
}

/* --- Clients Section --- */
.clients {
  padding: var(--space-2xl) 0;
  background-color: var(--color-light);
}

.clients__header {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.clients__header h2 {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--space-sm);
}

.clients__logos {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: var(--space-xl);
}

.clients__logos span {
  font-size: var(--font-size-sm);
  color: var(--color-gray-400);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* --- CTA Section --- */
.cta {
  padding: var(--space-3xl) 0;
  text-align: center;
}

.cta h2 {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--space-sm);
}

.cta p {
  font-size: var(--font-size-lg);
  color: var(--color-gray-500);
  margin-bottom: var(--space-lg);
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

.cta__actions {
  display: flex;
  justify-content: center;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

/* --- Footer --- */
.footer {
  background-color: var(--color-secondary);
  color: var(--color-gray-300);
  padding: var(--space-2xl) 0 var(--space-lg);
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-xl);
  margin-bottom: var(--space-xl);
}

.footer__brand p {
  margin-top: var(--space-sm);
  font-size: var(--font-size-sm);
  line-height: 1.7;
  max-width: 320px;
}

.footer__title {
  font-family: var(--font-heading);
  font-size: var(--font-size-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-white);
  margin-bottom: var(--space-md);
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.footer__links a,
.footer__links span {
  color: var(--color-gray-400);
  font-size: var(--font-size-sm);
  transition: color var(--transition);
}

.footer__links a:hover {
  color: var(--color-white);
}

.footer__social {
  display: flex;
  gap: var(--space-sm);
}

.footer__social a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.1);
  color: var(--color-gray-300);
  transition: all var(--transition);
}

.footer__social a:hover {
  background-color: var(--color-accent);
  color: var(--color-white);
}

.footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--space-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: var(--font-size-sm);
}

.footer__bottom a {
  color: var(--color-gray-400);
}

.footer__bottom a:hover {
  color: var(--color-white);
}

/* --- Page Header (for subpages) --- */
.page-header {
  padding-top: calc(100px + var(--space-md));
  padding-bottom: var(--space-sm);
  background-color: var(--color-light);
  text-align: center;
}

.page-header h1 {
  font-size: var(--font-size-3xl);
  margin-bottom: 0.25rem;
}

.page-header p {
  color: var(--color-gray-500);
  font-size: var(--font-size-lg);
}

/* --- Carousel (kunstwerken page) --- */
.gallery {
  padding: var(--space-md) 0 var(--space-lg);
}

.carousel {
  position: relative;
  max-width: 1000px;
  margin: 0 auto;
}

.carousel__viewport {
  overflow: hidden;
  border-radius: var(--border-radius-lg);
}

.carousel__track {
  display: flex;
  transition: transform 0.4s ease;
}

.carousel__slide {
  min-width: 100%;
  background-color: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
}

.carousel__image {
  width: 100%;
  height: calc(100vh - 340px);
  min-height: 350px;
  max-height: 600px;
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: var(--color-white);
}

.carousel__image img {
  max-height: 100%;
  max-width: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
}

.carousel__info {
  padding: var(--space-lg) var(--space-md);
  text-align: center;
}

.carousel__title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.carousel__artist {
  font-size: var(--font-size-base);
  color: var(--color-accent);
  font-weight: 500;
  margin-bottom: var(--space-xs);
}

.carousel__details {
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
}

.carousel__technique {
  font-size: var(--font-size-sm);
  color: var(--color-gray-400);
  margin-top: 0.125rem;
}

/* Arrow buttons */
.carousel__btn {
  position: absolute;
  top: calc(50% - 2rem);
  transform: translateY(-50%);
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 1px solid var(--color-gray-300);
  background-color: var(--color-white);
  color: var(--color-primary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
  z-index: 2;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.carousel__btn:hover {
  background-color: var(--color-accent);
  color: var(--color-white);
  border-color: var(--color-accent);
}

.carousel__btn:disabled {
  opacity: 0.3;
  cursor: default;
  pointer-events: none;
}

.carousel__btn--prev {
  left: -24px;
}

.carousel__btn--next {
  right: -24px;
}

/* Dot indicators */
.carousel__dots {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-xs);
  margin-top: var(--space-lg);
}

.carousel__dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: none;
  background-color: var(--color-gray-300);
  cursor: pointer;
  transition: all var(--transition);
  padding: 0;
}

.carousel__dot:hover {
  background-color: var(--color-gray-500);
}

.carousel__dot--active {
  background-color: var(--color-accent);
  transform: scale(1.2);
}

/* --- About Page --- */
.about {
  padding: var(--space-2xl) 0;
}

.about__content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
  align-items: center;
}

.about__text h2 {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--space-md);
}

.about__text p {
  color: var(--color-gray-600);
  margin-bottom: var(--space-md);
  line-height: 1.8;
}

.about__image {
  border-radius: var(--border-radius-lg);
  overflow: hidden;
}

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

/* --- Contact Page --- */
.contact {
  padding: var(--space-2xl) 0;
}

.contact__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
}

.contact__info h2 {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--space-md);
}

.contact__info p {
  color: var(--color-gray-600);
  margin-bottom: var(--space-md);
  line-height: 1.8;
}

.contact__detail {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-sm);
  color: var(--color-gray-600);
}

.contact__detail svg {
  width: 20px;
  height: 20px;
  color: var(--color-accent);
  flex-shrink: 0;
}

.contact__map {
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  min-height: 400px;
  background-color: var(--color-gray-100);
}

.contact__map iframe {
  width: 100%;
  height: 100%;
  min-height: 400px;
  border: 0;
}

/* ============================================
   FAQ Section
   ============================================ */

.faq {
  padding: var(--space-2xl) 0;
  background-color: var(--color-gray-100);
}

.faq h2 {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--space-lg);
}

.faq__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.faq__list details {
  background-color: var(--color-white);
  border-radius: var(--border-radius);
  border: 1px solid var(--color-gray-200);
  overflow: hidden;
}

.faq__list summary {
  padding: var(--space-md);
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-sm);
  transition: background-color 0.2s ease;
}

.faq__list summary::-webkit-details-marker {
  display: none;
}

.faq__list summary::after {
  content: '+';
  font-size: 1.4rem;
  font-weight: 400;
  color: var(--color-accent);
  flex-shrink: 0;
  transition: transform 0.2s ease;
}

.faq__list details[open] summary::after {
  transform: rotate(45deg);
}

.faq__list summary:hover {
  background-color: var(--color-gray-100);
}

.faq__list details[open] summary {
  border-bottom: 1px solid var(--color-gray-200);
}

.faq__answer {
  padding: var(--space-md);
  color: var(--color-gray-600);
  line-height: 1.8;
}

/* ============================================
   Responsive Design — Mobile First Overrides
   ============================================ */

@media (max-width: 1024px) {
  .usps__grid,
  .steps__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .artists__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Carousel: bring arrow buttons inside on smaller screens */
  .carousel__btn--prev {
    left: var(--space-xs);
  }

  .carousel__btn--next {
    right: var(--space-xs);
  }

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

  .about__content,
  .contact__grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  :root {
    --font-size-4xl: 2.5rem;
    --font-size-3xl: 2rem;
    --font-size-2xl: 1.5rem;
  }

  .header__nav {
    display: none;
    position: absolute;
    top: 100px;
    left: 0;
    right: 0;
    background-color: var(--color-white);
    flex-direction: column;
    padding: var(--space-md);
    border-bottom: 1px solid var(--color-gray-200);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  }

  .header__nav.is-open {
    display: flex;
  }

  .header__toggle {
    display: flex;
  }

  .hero {
    min-height: auto;
    padding-top: calc(100px + var(--space-lg));
    padding-bottom: var(--space-lg);
  }

  .usps__grid,
  .steps__grid {
    grid-template-columns: 1fr;
  }

  .artists__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Carousel: smaller arrow buttons on mobile */
  .carousel__btn {
    width: 40px;
    height: 40px;
  }

  .carousel__btn--prev {
    left: var(--space-xs);
  }

  .carousel__btn--next {
    right: var(--space-xs);
  }

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

  .footer__bottom {
    flex-direction: column;
    gap: var(--space-sm);
    text-align: center;
  }

  .clients__logos {
    gap: var(--space-md);
  }
}

@media (max-width: 480px) {
  :root {
    --font-size-4xl: 2rem;
    --font-size-3xl: 1.75rem;
  }

  .hero__actions {
    flex-direction: column;
  }

  .btn {
    width: 100%;
  }

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