/* ========================================================================
   Variables
   ===================================================================== */

:root {
  /* Color Palette - gallery-inspired, minimalist, textural */
  --color-background: #f5f2eb; /* raw canvas white */
  --color-surface: #ffffff;
  --color-text: #171717; /* matte black */
  --color-muted-text: #5b5b5b;

  --color-primary: #c4683a; /* warm terracotta */
  --color-primary-soft: rgba(196, 104, 58, 0.12);

  --color-accent: #b69135; /* muted ochre */
  --color-accent-soft: rgba(182, 145, 53, 0.12);

  --color-success: #2f855a;
  --color-warning: #b7791f;
  --color-danger: #c53030;

  --color-gray-50: #f9fafb;
  --color-gray-100: #f3f4f6;
  --color-gray-200: #e5e7eb;
  --color-gray-300: #d1d5db;
  --color-gray-400: #9ca3af;
  --color-gray-500: #6b7280;
  --color-gray-600: #4b5563;
  --color-gray-700: #374151;
  --color-gray-800: #1f2933;
  --color-gray-900: #111827;

  --color-border-subtle: rgba(0, 0, 0, 0.06);
  --color-border-strong: rgba(0, 0, 0, 0.18);

  --color-graphite: #3b3b3f; /* metallic graphite accent */

  /* Typography */
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", sans-serif;
  --font-display: "Neue Haas Grotesk", "Helvetica Neue", Arial, system-ui, sans-serif;
  --font-mono: "SF Mono", ui-monospace, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;

  /* Font sizes (clamp for responsive scaling) */
  --font-size-xs: 0.75rem;   /* 12px */
  --font-size-sm: 0.875rem;  /* 14px */
  --font-size-base: 1rem;    /* 16px */
  --font-size-lg: 1.125rem;  /* 18px */
  --font-size-xl: 1.25rem;   /* 20px */
  --font-size-2xl: clamp(1.5rem, 1.1rem + 1vw, 1.875rem);   /* ~24-30px */
  --font-size-3xl: clamp(1.875rem, 1.45rem + 1.2vw, 2.5rem); /* ~30-40px */
  --font-size-4xl: clamp(2.25rem, 1.6rem + 1.8vw, 3.25rem);  /* ~36-52px */
  --font-size-5xl: clamp(3rem, 2.4rem + 2.2vw, 4.25rem);     /* hero headlines */

  /* Line heights */
  --line-height-tight: 1.1;
  --line-height-snug: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.7;

  /* Spacing scale (0–96px) */
  --space-0: 0;
  --space-1: 0.25rem;  /* 4px */
  --space-2: 0.5rem;   /* 8px */
  --space-3: 0.75rem;  /* 12px */
  --space-4: 1rem;     /* 16px */
  --space-5: 1.25rem;  /* 20px */
  --space-6: 1.5rem;   /* 24px */
  --space-7: 1.75rem;  /* 28px */
  --space-8: 2rem;     /* 32px */
  --space-10: 2.5rem;  /* 40px */
  --space-12: 3rem;    /* 48px */
  --space-16: 4rem;    /* 64px */
  --space-20: 5rem;    /* 80px */
  --space-24: 6rem;    /* 96px */

  /* Radius */
  --radius-none: 0;
  --radius-sm: 2px;
  --radius-md: 6px;
  --radius-lg: 12px;
  --radius-xl: 18px;
  --radius-pill: 999px;

  /* Shadows - subtle, gallery-light inspired */
  --shadow-soft: 0 14px 40px rgba(0, 0, 0, 0.08);
  --shadow-subtle: 0 10px 30px rgba(0, 0, 0, 0.06);
  --shadow-elevated: 0 18px 60px rgba(0, 0, 0, 0.15);

  /* Transitions */
  --transition-fast: 120ms ease-out;
  --transition-base: 180ms ease-out;
  --transition-slow: 260ms ease-out;

  /* Layout */
  --container-max-width: 1120px;
  --container-wide-max-width: 1320px;
}

/* ========================================================================
   Reset / Normalize
   ===================================================================== */

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

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

body {
  margin: 0;
}

h1, h2, h3, h4, h5, h6,
p, figure, blockquote,
dl, dd {
  margin: 0;
}

ul[role="list"],
ol[role="list"] {
  list-style: none;
  margin: 0;
  padding: 0;
}

a {
  text-decoration: none;
  color: inherit;
}

img, picture, video, canvas, svg {
  display: block;
  max-width: 100%;
}

img {
  height: auto;
}

button, input, select, textarea {
  font: inherit;
  color: inherit;
  margin: 0;
}

button {
  border: none;
  background: none;
  padding: 0;
  cursor: pointer;
}

textarea {
  resize: vertical;
}

:focus {
  outline: none;
}

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

/* Reduce motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ========================================================================
   Base Styles
   ===================================================================== */

body {
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  background-color: var(--color-background);
  color: var(--color-text);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

main {
  min-height: 100vh;
}

/* Headings - strong, gallery-style typography */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 500;
  letter-spacing: 0.02em;
  line-height: var(--line-height-tight);
  color: var(--color-text);
}

h1 {
  font-size: var(--font-size-5xl);
  margin-bottom: var(--space-4);
}

h2 {
  font-size: var(--font-size-4xl);
  margin-bottom: var(--space-4);
}

h3 {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--space-3);
}

h4 {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--space-3);
}

h5 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-2);
}

h6 {
  font-size: var(--font-size-lg);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  margin-bottom: var(--space-2);
}

p {
  margin-bottom: var(--space-4);
  color: var(--color-muted-text);
}

strong, b {
  font-weight: 600;
}

small {
  font-size: var(--font-size-sm);
}

code, pre, kbd, samp {
  font-family: var(--font-mono);
}

hr {
  border: none;
  border-top: 1px solid var(--color-border-subtle);
  margin: var(--space-8) 0;
}

/* Links - minimalist, underline-on-hover */

a {
  color: var(--color-primary);
  text-decoration: none;
  text-underline-offset: 0.2em;
  transition:
    color var(--transition-base),
    text-decoration-color var(--transition-base),
    opacity var(--transition-base);
}

a:hover {
  color: var(--color-graphite);
  text-decoration: underline;
}

a:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
}

/* Lists */

ul, ol {
  padding-left: 1.25rem;
  margin-bottom: var(--space-4);
}

li + li {
  margin-top: 0.25em;
}

/* ========================================================================
   Utilities
   ===================================================================== */

/* Layout containers */

.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin-inline: auto;
  padding-inline: var(--space-4);
}

.container-wide {
  width: 100%;
  max-width: var(--container-wide-max-width);
  margin-inline: auto;
  padding-inline: var(--space-4);
}

.section {
  padding-block: var(--space-12);
}

.section-tight {
  padding-block: var(--space-8);
}

/* Flex helpers */

.flex {
  display: flex;
}

.inline-flex {
  display: inline-flex;
}

.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

.flex-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

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

.flex-wrap {
  flex-wrap: wrap;
}

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

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

.items-end {
  align-items: flex-end;
}

.justify-center {
  justify-content: center;
}

.justify-between {
  justify-content: space-between;
}

.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-8); }

/* Grid helpers - for gallery layouts */

.grid {
  display: grid;
}

.grid-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-4);
}

.grid-auto-fit {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-6);
}

/* Spacing utilities (margin / padding) */

.m-0 { margin: 0 !important; }
.mt-0 { margin-top: 0 !important; }
.mb-0 { margin-bottom: 0 !important; }

.mt-4 { margin-top: var(--space-4) !important; }
.mt-6 { margin-top: var(--space-6) !important; }
.mt-8 { margin-top: var(--space-8) !important; }
.mb-2 { margin-bottom: var(--space-2) !important; }
.mb-4 { margin-bottom: var(--space-4) !important; }
.mb-6 { margin-bottom: var(--space-6) !important; }
.mb-8 { margin-bottom: var(--space-8) !important; }

.p-4 { padding: var(--space-4) !important; }
.p-6 { padding: var(--space-6) !important; }
.p-8 { padding: var(--space-8) !important; }

/* Text alignment */

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

/* Screen reader only */

.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;
}

/* ========================================================================
   Components
   ===================================================================== */

/* Buttons - minimalist with subtle elevation */

.button,
button.button,
input[type="submit"],
input[type="button"],
input[type="reset"] {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4em;
  padding: 0.55rem 1.3rem;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  background-color: var(--color-text);
  color: #fff;
  font-size: var(--font-size-sm);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  line-height: 1;
  cursor: pointer;
  transition:
    background-color var(--transition-base),
    color var(--transition-base),
    border-color var(--transition-base),
    box-shadow var(--transition-base),
    transform var(--transition-fast);
}

.button-primary {
  background-color: var(--color-primary);
  border-color: rgba(0, 0, 0, 0.04);
}

.button-outline {
  background-color: transparent;
  color: var(--color-text);
  border-color: var(--color-border-strong);
}

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

.button:hover,
button.button:hover,
input[type="submit"]:hover,
input[type="button"]:hover,
input[type="reset"]:hover {
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.16);
  transform: translateY(-1px);
}

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

.button-outline:hover {
  border-color: var(--color-text);
}

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

.button[disabled],
button[disabled],
input[type="submit"][disabled],
input[type="button"][disabled],
input[type="reset"][disabled] {
  opacity: 0.5;
  cursor: not-allowed;
  box-shadow: none;
  transform: none;
}

/* Inputs & form fields */

input[type="text"],
input[type="email"],
input[type="tel"],
input[type="url"],
input[type="number"],
input[type="search"],
input[type="password"],
textarea,
select {
  width: 100%;
  padding: 0.7rem 0.9rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-subtle);
  background-color: rgba(255, 255, 255, 0.9);
  color: var(--color-text);
  font-size: var(--font-size-sm);
  line-height: 1.4;
  transition:
    border-color var(--transition-base),
    box-shadow var(--transition-base),
    background-color var(--transition-base);
}

input::placeholder,
textarea::placeholder {
  color: var(--color-gray-400);
}

input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: none;
  border-color: var(--color-graphite);
  box-shadow: 0 0 0 1px var(--color-graphite), 0 18px 40px rgba(0, 0, 0, 0.08);
}

input[disabled],
textarea[disabled],
select[disabled] {
  opacity: 0.55;
  cursor: not-allowed;
}

label {
  display: block;
  font-size: var(--font-size-sm);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-gray-600);
  margin-bottom: 0.35rem;
}

/* Card - for artwork previews, exhibition info, etc. */

.card {
  position: relative;
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(0, 0, 0, 0.04);
  box-shadow: var(--shadow-subtle);
  padding: var(--space-5);
  overflow: hidden;
}

.card--flat {
  box-shadow: none;
  border-radius: var(--radius-md);
}

.card:hover {
  box-shadow: var(--shadow-soft);
}

.card-header {
  margin-bottom: var(--space-4);
}

.card-title {
  font-family: var(--font-display);
  font-size: var(--font-size-xl);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.card-meta {
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--color-gray-500);
  margin-top: 0.5rem;
}

.card-body {
  font-size: var(--font-size-sm);
  color: var(--color-muted-text);
}

/* Image frame - gallery style */

.image-frame {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-md);
  background-color: #e1ded6;
}

.image-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow), opacity var(--transition-slow);
}

.image-frame--hover-zoom img:hover {
  transform: scale(1.03);
}

/* Tag / pill for mediums, series, etc. */

.pill {
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-pill);
  font-size: var(--font-size-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  background-color: var(--color-primary-soft);
  color: var(--color-text);
}

.pill-muted {
  background-color: var(--color-gray-100);
  color: var(--color-gray-700);
}

/* Meta text for captions / exhibition details */

.meta {
  font-size: var(--font-size-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-gray-500);
}

/* ========================================================================
   Accessibility and Misc
   ===================================================================== */

[aria-busy="true"] {
  cursor: progress;
}

[aria-disabled="true"] {
  pointer-events: none;
}

::selection {
  background-color: var(--color-text);
  color: #fff;
}

@media (max-width: 768px) {
  .section {
    padding-block: var(--space-8);
  }

  h1 {
    margin-bottom: var(--space-3);
  }

  .container,
  .container-wide {
    padding-inline: var(--space-3);
  }
}