/* ============================================================
   DESIGN TOKENS
   ============================================================ */

:root {
  /* Palette */
  --color-bg:           #faf8f4;
  --color-surface:      #f3ede4;
  --color-surface-alt:  #ece5d8;
  --color-border:       #ddd5c6;
  --color-border-light: #ece5d8;

  --color-text:         #2c2417;
  --color-text-muted:   #6b6158;
  --color-heading:      #1a1209;
  --color-ink:          #0e0b07;

  --color-accent:       #8b5e3c;
  --color-accent-dark:  #6b4328;
  --color-accent-light: #c49a6a;

  --color-gold:         #c49a3c;
  --color-gold-dark:    #9a7828;

  --color-available:    #3a6b3a;
  --color-available-bg: #e8f4e8;

  --color-white:        #ffffff;
  --color-black:        #000000;

  /* Typography */
  --font-heading: 'Playfair Display', Georgia, 'Times New Roman', serif;
  --font-body:    Georgia, 'Times New Roman', serif;
  --font-ui:      system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;

  /* Type scale */
  --text-xs:   0.75rem;
  --text-sm:   0.875rem;
  --text-base: 1rem;
  --text-lg:   1.125rem;
  --text-xl:   1.25rem;
  --text-2xl:  1.5rem;
  --text-3xl:  1.875rem;
  --text-4xl:  2.25rem;
  --text-5xl:  3rem;
  --text-6xl:  3.75rem;

  /* Line heights */
  --leading-tight:  1.2;
  --leading-snug:   1.35;
  --leading-normal: 1.6;
  --leading-loose:  1.8;

  /* Spacing */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-14: 3.5rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Radii */
  --radius-sm:  2px;
  --radius-md:  4px;
  --radius-lg:  8px;

  /* Shadows */
  --shadow-sm:  0 1px 3px rgba(0,0,0,0.08);
  --shadow-md:  0 4px 12px rgba(0,0,0,0.10);
  --shadow-lg:  0 8px 24px rgba(0,0,0,0.12);

  /* Transitions */
  --transition-fast:   150ms ease;
  --transition-base:   250ms ease;
  --transition-slow:   400ms ease;

  /* Layout */
  --container-max:     1200px;
  --container-padding: var(--space-6);
  --nav-height:        68px;
}

/* ============================================================
   RESET
   ============================================================ */

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

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

body {
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  min-height: 100vh;
}

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

ul, ol {
  list-style: none;
}

a {
  color: var(--color-accent-dark);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: color var(--transition-fast);
}

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

a:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

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

button:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 400;
  line-height: var(--leading-tight);
  color: var(--color-heading);
}

p + p {
  margin-top: var(--space-4);
}

/* ============================================================
   LAYOUT
   ============================================================ */

.container {
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-padding);
}

/* ============================================================
   TYPOGRAPHY
   ============================================================ */

.page-title {
  font-size: var(--text-4xl);
  font-weight: 700;
  margin-bottom: var(--space-4);
}

.page-subtitle {
  font-size: var(--text-xl);
  color: var(--color-text-muted);
  font-family: var(--font-ui);
  font-weight: 400;
  line-height: var(--leading-snug);
}

.section-heading {
  font-size: var(--text-3xl);
  margin-bottom: var(--space-2);
}

.section-subheading {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  font-family: var(--font-ui);
  margin-bottom: var(--space-8);
}

.link-back {
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
}

.link-back:hover {
  color: var(--color-accent);
}

.link-text {
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  text-decoration: none;
  color: var(--color-accent-dark);
}

.link-text:hover {
  color: var(--color-accent);
  text-decoration: underline;
}

/* ============================================================
   BUTTONS
   ============================================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-md);
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.02em;
  text-decoration: none;
  transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
  cursor: pointer;
  border: 2px solid transparent;
  white-space: nowrap;
}

.btn:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

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

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

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

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

.btn--ghost {
  background-color: transparent;
  color: var(--color-text);
  border-color: var(--color-border);
}

.btn--ghost:hover {
  background-color: var(--color-surface);
  border-color: var(--color-border);
}

.btn--large {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-base);
}

/* ============================================================
   PAGE STRUCTURE
   ============================================================ */

.page-wrapper {
  padding-top: var(--nav-height);
}

.page-header {
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-12) 0 var(--space-10);
}

.page-content {
  padding: var(--space-12) 0 var(--space-20);
}

/* ============================================================
   HERO
   ============================================================ */

.hero {
  position: relative;
  min-height: 70vh;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  background-color: var(--color-ink);
}

.hero__img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 40%;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(10, 7, 3, 0) 30%,
    rgba(10, 7, 3, 0.55) 65%,
    rgba(10, 7, 3, 0.75) 100%
  );
}

.hero__content {
  position: relative;
  z-index: 1;
  width: 100%;
  padding: var(--space-16) 0 var(--space-16);
}

.hero__inner {
  max-width: 680px;
}

.hero__eyebrow {
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent-light);
  margin-bottom: var(--space-3);
}

.hero__title {
  font-size: clamp(var(--text-4xl), 5vw, var(--text-6xl));
  font-weight: 700;
  color: var(--color-white);
  line-height: 1.1;
  margin-bottom: var(--space-5);
}

.hero__subtitle {
  font-size: var(--text-lg);
  color: rgba(255,255,255,0.85);
  font-family: var(--font-ui);
  font-weight: 400;
  line-height: var(--leading-snug);
  margin-bottom: var(--space-8);
  max-width: 480px;
}

.hero__actions {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.hero__credit {
  position: absolute;
  bottom: var(--space-3);
  right: var(--space-4);
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  color: rgba(255,255,255,0.5);
  z-index: 1;
}

/* ============================================================
   HOMEPAGE SECTIONS
   ============================================================ */

.home-section {
  padding: var(--space-20) 0;
}

.home-section--alt {
  background-color: var(--color-surface);
}

.home-section--dark {
  background-color: var(--color-ink);
  color: var(--color-white);
}

.home-section--dark h2 {
  color: var(--color-white);
}

.home-section--dark p {
  color: rgba(255,255,255,0.8);
}

.home-section__header {
  margin-bottom: var(--space-10);
}

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

/* Featured categories grid — 3 top row, 2 bottom row centred */
.category-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: var(--space-6);
}

.category-grid > * {
  grid-column: span 2;
}

.category-grid > *:nth-child(4) {
  grid-column: 2 / 4;
}

.category-grid > *:nth-child(5) {
  grid-column: 4 / 6;
}

/* Artist statement */
.artist-statement {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
}

.artist-statement__text {
  font-size: var(--text-lg);
  line-height: var(--leading-loose);
}

.artist-statement__text p + p {
  margin-top: var(--space-5);
}

.artist-statement__actions {
  margin-top: var(--space-8);
}

.artist-statement__image {
  position: relative;
}

.artist-statement__img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

/* Historic Calgary feature */
.feature-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
}

.feature-split--reverse .feature-split__image {
  order: 2;
}

.feature-split--reverse .feature-split__text {
  order: 1;
}

.feature-split__img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  box-shadow: var(--shadow-md);
}

.feature-split__eyebrow {
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-3);
}

.feature-split__title {
  font-size: var(--text-3xl);
  margin-bottom: var(--space-5);
}

.feature-split__body {
  font-size: var(--text-lg);
  line-height: var(--leading-loose);
  color: var(--color-text-muted);
}

.feature-split__cta {
  margin-top: var(--space-8);
}

/* Prints callout banner */
.prints-banner {
  text-align: center;
  padding: var(--space-16) 0;
  background-color: var(--color-surface);
}

.prints-banner__title {
  font-size: var(--text-3xl);
  margin-bottom: var(--space-4);
}

.prints-banner__body {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 520px;
  margin: 0 auto var(--space-8);
  font-family: var(--font-ui);
}

/* Exhibitions preview */
.exhibitions-preview {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: var(--space-16);
  align-items: start;
}

/* Contact CTA */
.contact-cta {
  background-color: var(--color-accent);
  color: var(--color-white);
  text-align: center;
  padding: var(--space-16) 0;
}

.contact-cta h2 {
  color: var(--color-white);
  font-size: var(--text-3xl);
  margin-bottom: var(--space-4);
}

.contact-cta p {
  color: rgba(255,255,255,0.85);
  font-family: var(--font-ui);
  margin-bottom: var(--space-8);
}

.contact-cta .btn--primary {
  background-color: var(--color-white);
  color: var(--color-accent-dark);
  border-color: var(--color-white);
}

.contact-cta .btn--primary:hover {
  background-color: var(--color-surface);
  border-color: var(--color-surface);
}

/* ============================================================
   RESPONSIVE
   ============================================================ */

@media (max-width: 900px) {
  .category-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .category-grid > *,
  .category-grid > *:nth-child(4),
  .category-grid > *:nth-child(5) {
    grid-column: span 1;
  }

  .artist-statement,
  .feature-split,
  .exhibitions-preview {
    grid-template-columns: 1fr;
    gap: var(--space-10);
  }

  .feature-split--reverse .feature-split__image,
  .feature-split--reverse .feature-split__text {
    order: unset;
  }
}

@media (max-width: 600px) {
  :root {
    --container-padding: var(--space-5);
  }

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

  .category-grid > *,
  .category-grid > *:nth-child(4),
  .category-grid > *:nth-child(5) {
    grid-column: span 1;
  }

  .hero {
    min-height: 80vmin;
  }

  .hero__actions {
    flex-direction: column;
  }

  .page-title {
    font-size: var(--text-3xl);
  }
}