/* ==========================================================================
   12th Berlin Biennale for Contemporary Art — Design System Styles
   Theme: Iris-and-ink broadsheet — violet skies over monumental black type on white paper
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Source+Serif+4:ital,opsz,wght@0,8..60,300;0,8..60,400;0,8..60,600;0,8..60,700;1,8..60,400;1,8..60,600&family=Space+Grotesk:wght@400;500;600;700&display=swap');

:root {
  /* Colors */
  --color-iris-violet: #7373ff;
  --color-deep-iris: #23234d;
  --color-obsidian: #000000;
  --color-paper-white: #ffffff;
  --color-ash-gray: #f2f2f2;
  --color-mist-gray: #e7e7e7;

  /* Typography — Font Families */
  --font-abcmonumentgrotesk: 'ABCMonumentGrotesk', 'Space Grotesk', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-bradfordll: 'BradfordLL', 'Source Serif 4', Georgia, 'Times New Roman', serif;

  /* Typography — Scale */
  --text-caption: 12px;
  --leading-caption: 1.16;
  --tracking-caption: 0.12px;
  --text-body-sm: 14px;
  --leading-body-sm: 1.25;
  --text-body-lg: 17px;
  --leading-body-lg: 1.22;
  --text-subheading: 19px;
  --leading-subheading: 1.22;
  --text-heading-sm: 22px;
  --leading-heading-sm: 1.08;
  --text-heading: 25px;
  --leading-heading: 1.06;
  --text-heading-lg: 29px;
  --leading-heading-lg: 1.04;
  --text-display: 32px;
  --leading-display: 1.03;
  --tracking-display: -0.32px;

  /* Typography — Weights */
  --font-weight-regular: 400;
  --font-weight-bold: 700;

  /* Spacing */
  --spacing-unit: 4px;
  --spacing-4: 4px;
  --spacing-8: 8px;
  --spacing-12: 12px;
  --spacing-24: 24px;
  --spacing-32: 32px;
  --spacing-36: 36px;
  --spacing-48: 48px;
  --spacing-60: 60px;

  /* Layout */
  --page-max-width: 1440px;
  --section-gap: 32px;
  --card-padding: 12px;
  --element-gap: 8px;

  /* Border Radius */
  --radius-sm: 3px;
  --radius-md: 7px;
  --radius-3xl: 28.6839px;
  --radius-3xl-2: 44.129px;
  --radius-full: 64px;

  /* Named Radii */
  --radius-tags: 3px;
  --radius-cards: 3px;
  --radius-inputs: 7px;
  --radius-buttons: 3px;
  --radius-navpills: 44px;

  /* Surfaces */
  --surface-paper-white: #ffffff;
  --surface-ash-gray: #f2f2f2;
  --surface-mist-gray: #e7e7e7;
  --surface-iris-violet: #7373ff;
  --surface-obsidian: #000000;
}

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

html {
  font-family: var(--font-abcmonumentgrotesk);
  background-color: var(--surface-paper-white);
  color: var(--color-obsidian);
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  margin: 0;
  padding: 0;
  min-height: 100vh;
  line-height: 1.4;
  overflow-x: hidden;
  background-color: var(--color-paper-white);
}

/* Constructivist BroadSheet Grid & Container */
.container {
  width: 100%;
  max-width: var(--page-max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-24);
}

.full-bleed {
  width: 100vw;
  position: relative;
  left: 50%;
  right: 50%;
  margin-left: -50vw;
  margin-right: -50vw;
}

/* Hairline borders */
.border-b-hairline {
  border-bottom: 1px solid var(--color-obsidian);
}

.border-t-hairline {
  border-top: 1px solid var(--color-obsidian);
}

.border-hairline {
  border: 1px solid var(--color-obsidian);
}

.border-violet-hairline {
  border: 1px solid var(--color-iris-violet);
}

/* Typography Helpers */
.font-grotesk {
  font-family: var(--font-abcmonumentgrotesk);
}

.font-serif {
  font-family: var(--font-bradfordll);
}

.text-display {
  font-size: var(--text-display);
  line-height: var(--leading-display);
  letter-spacing: var(--tracking-display);
}

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

.text-heading {
  font-size: var(--text-heading);
  line-height: var(--leading-heading);
}

.text-heading-sm {
  font-size: var(--text-heading-sm);
  line-height: var(--leading-heading-sm);
}

.text-subheading {
  font-size: var(--text-subheading);
  line-height: var(--leading-subheading);
}

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

.text-body-sm {
  font-size: var(--text-body-sm);
  line-height: var(--leading-body-sm);
}

.text-caption {
  font-size: var(--text-caption);
  line-height: var(--leading-caption);
  letter-spacing: var(--tracking-caption);
}

/* Strict No-Shadow rule per Design.md */
button, input, select, textarea, div, a, article, section {
  box-shadow: none !important;
  text-shadow: none !important;
}

/* Links */
a {
  color: inherit;
  text-decoration: none;
  transition: background-color 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-abcmonumentgrotesk);
  font-size: var(--text-body-sm);
  font-weight: var(--font-weight-bold);
  cursor: pointer;
  transition: all 0.15s ease;
  border-radius: var(--radius-buttons);
  text-align: center;
  white-space: nowrap;
  gap: var(--spacing-8);
  line-height: 1;
}

/* Violet Outlined Action Button per Design.md:
   Transparent fill with 1-2px Iris Violet (#7373ff) border, Iris Violet text,
   ABCMonumentGrotesk 14-16px weight 700. 3px corner radius, 5-7px vertical padding, 11-12px horizontal padding.
   Used for nav items, tag pills, and program links. */
.btn-violet-outline {
  background-color: transparent;
  border: 1px solid var(--color-iris-violet);
  color: var(--color-iris-violet);
  padding: 6px 12px;
  border-radius: var(--radius-buttons);
}

.btn-violet-outline:hover,
.btn-violet-outline:focus-visible {
  background-color: var(--color-iris-violet);
  color: var(--color-paper-white);
}

/* Neutral Outlined Button per Design.md:
   White fill with 1px Obsidian border, black text, 3px radius, 3-6px vertical and 5-11px horizontal padding. */
.btn-neutral-outline {
  background-color: var(--color-paper-white);
  border: 1px solid var(--color-obsidian);
  color: var(--color-obsidian);
  padding: 5px 11px;
  border-radius: var(--radius-buttons);
}

.btn-neutral-outline:hover,
.btn-neutral-outline:focus-visible {
  background-color: var(--color-ash-gray);
}

/* Pill Nav Button per Design.md:
   White fill, 1px Obsidian border, 44px corner radius (fully rounded), ABCMonumentGrotesk 14px */
.btn-pill-nav {
  background-color: var(--color-paper-white);
  border: 1px solid var(--color-obsidian);
  color: var(--color-obsidian);
  border-radius: var(--radius-navpills);
  padding: 6px 16px;
  font-size: var(--text-body-sm);
  font-weight: var(--font-weight-regular);
}

.btn-pill-nav:hover {
  background-color: var(--color-ash-gray);
}

.btn-pill-nav.active {
  background-color: var(--color-obsidian);
  color: var(--color-paper-white);
  border-color: var(--color-obsidian);
}

/* Dark Pill Button */
.btn-pill-dark {
  background-color: var(--color-obsidian);
  border: 1px solid var(--color-iris-violet);
  color: var(--color-iris-violet);
  border-radius: var(--radius-navpills);
  padding: 6px 16px;
  font-size: var(--text-body-sm);
  font-weight: var(--font-weight-bold);
}

.btn-pill-dark:hover {
  background-color: var(--color-deep-iris);
  color: var(--color-paper-white);
}

/* Program Tag Pill per Design.md:
   White fill, 1px Obsidian border, 3px radius, ABCMonumentGrotesk 12-14px weight 700 uppercase.
   Compact 2-3px vertical padding, 11-12px horizontal. */
.tag-pill {
  display: inline-block;
  background-color: var(--color-paper-white);
  border: 1px solid var(--color-obsidian);
  color: var(--color-obsidian);
  border-radius: var(--radius-tags);
  padding: 3px 11px;
  font-size: var(--text-caption);
  font-weight: var(--font-weight-bold);
  text-transform: uppercase;
  letter-spacing: var(--tracking-caption);
  cursor: pointer;
  transition: all 0.15s ease;
}

.tag-pill:hover,
.tag-pill.active {
  background-color: var(--color-obsidian);
  color: var(--color-paper-white);
}

.tag-pill-violet {
  border-color: var(--color-iris-violet);
  color: var(--color-iris-violet);
}

.tag-pill-violet:hover,
.tag-pill-violet.active {
  background-color: var(--color-iris-violet);
  color: var(--color-paper-white);
}

/* Inputs per Design.md:
   White fill, 1px Obsidian border, 7px corner radius, ABCMonumentGrotesk 16px placeholder. 8-10px padding */
.input-text {
  font-family: var(--font-abcmonumentgrotesk);
  font-size: var(--text-body-sm);
  background-color: var(--color-paper-white);
  border: 1px solid var(--color-obsidian);
  border-radius: var(--radius-inputs);
  padding: 8px 12px;
  color: var(--color-obsidian);
  outline: none;
  width: 100%;
}

.input-text:focus {
  border-color: var(--color-iris-violet);
}

/* ==========================================================================
   Top Header & Announcement Bar
   ========================================================================== */
.top-header {
  position: sticky;
  top: 0;
  z-index: 900;
  background-color: var(--color-paper-white);
  border-bottom: 1px solid var(--color-obsidian);
}

.top-bar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px var(--spacing-24);
  max-width: var(--page-max-width);
  margin: 0 auto;
  gap: var(--spacing-12);
}

.header-left {
  display: flex;
  align-items: center;
  gap: var(--spacing-8);
}

.header-center {
  display: flex;
  align-items: center;
  gap: var(--spacing-12);
  font-size: var(--text-caption);
  font-weight: var(--font-weight-bold);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.ticker-dot {
  width: 7px;
  height: 7px;
  background-color: var(--color-iris-violet);
  border-radius: 50%;
  display: inline-block;
  animation: pulse 2s infinite ease-in-out;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.85); }
}

.header-right {
  display: flex;
  align-items: center;
  gap: var(--spacing-8);
}

/* Language Switcher pill group per Design.md:
   Compact group of 3 outlined buttons (EN, DE, Easy Language), 3px radius, 1px Obsidian border, ABCMonumentGrotesk 12px */
.lang-switcher {
  display: inline-flex;
  border: 1px solid var(--color-obsidian);
  border-radius: var(--radius-buttons);
  overflow: hidden;
  background-color: var(--color-paper-white);
}

.lang-btn {
  border: none;
  background: transparent;
  padding: 4px 8px;
  font-size: var(--text-caption);
  font-family: var(--font-abcmonumentgrotesk);
  font-weight: var(--font-weight-bold);
  cursor: pointer;
  border-right: 1px solid var(--color-obsidian);
  color: var(--color-obsidian);
  transition: background-color 0.15s ease;
}

.lang-btn:last-child {
  border-right: none;
}

.lang-btn:hover {
  background-color: var(--color-ash-gray);
}

.lang-btn.active {
  background-color: var(--color-obsidian);
  color: var(--color-paper-white);
}

/* ==========================================================================
   Overlapping Side Nav Panel per Design.md:
   Dark Obsidian (#000000) panel that overlaps the left edge of the page.
   Contains nav links in ABCMonumentGrotesk 16-17px, white text, with hairline 1px white dividers.
   Secondary links (Visit, Contact, Press) sit in a white sub-bar at top with black 1px borders.
   ========================================================================== */
.side-nav-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: rgba(0, 0, 0, 0.4);
  z-index: 998;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s ease, visibility 0.25s ease;
}

.side-nav-backdrop.open {
  opacity: 1;
  visibility: visible;
}

.side-nav-panel {
  position: fixed;
  top: 0;
  left: 0;
  width: 320px;
  max-width: 90vw;
  height: 100vh;
  background-color: var(--surface-obsidian);
  color: var(--color-paper-white);
  z-index: 999;
  display: flex;
  flex-direction: column;
  transform: translateX(-100%);
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  border-right: 1px solid var(--color-iris-violet);
  padding: var(--spacing-12);
  gap: var(--spacing-12);
  overflow-y: auto;
}

.side-nav-panel.open {
  transform: translateX(0);
}

.side-nav-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 4px 4px 8px 4px;
}

.side-nav-title {
  color: var(--color-iris-violet);
  font-size: var(--text-subheading);
  font-weight: var(--font-weight-bold);
}

.side-nav-close {
  background: transparent;
  border: 1px solid var(--color-paper-white);
  color: var(--color-paper-white);
  border-radius: var(--radius-buttons);
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 16px;
  line-height: 1;
}

.side-nav-close:hover {
  background-color: var(--color-paper-white);
  color: var(--color-obsidian);
}

/* Sub-bar (Visit, Contact, Press) in white with black border */
.side-nav-subbar {
  display: flex;
  background-color: var(--color-paper-white);
  border: 1px solid var(--color-obsidian);
  border-radius: var(--radius-buttons);
  overflow: hidden;
}

.side-nav-sublink {
  flex: 1;
  text-align: center;
  padding: 6px 4px;
  font-size: var(--text-body-sm);
  color: var(--color-obsidian);
  font-weight: var(--font-weight-bold);
  border-right: 1px solid var(--color-obsidian);
}

.side-nav-sublink:last-child {
  border-right: none;
}

.side-nav-sublink:hover {
  background-color: var(--color-ash-gray);
}

/* White Rectangular Navigation Card */
.side-nav-card {
  background-color: var(--color-paper-white);
  border: 1px solid var(--color-obsidian);
  border-radius: var(--radius-cards);
  padding: var(--spacing-8);
  display: flex;
  flex-direction: column;
}

.side-nav-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px var(--spacing-8);
  color: var(--color-obsidian);
  font-size: var(--text-body-lg);
  font-weight: var(--font-weight-regular);
  border-bottom: 1px solid var(--color-ash-gray);
}

.side-nav-item:last-child {
  border-bottom: none;
}

.side-nav-item:hover {
  background-color: var(--color-ash-gray);
  color: var(--color-iris-violet);
  padding-left: 12px;
}

.side-nav-item-badge {
  font-size: var(--text-caption);
  font-weight: var(--font-weight-bold);
  color: var(--color-iris-violet);
}

/* Utility buttons in side nav */
.side-nav-actions {
  display: flex;
  gap: var(--spacing-8);
}

.side-nav-search {
  position: relative;
  display: flex;
}

.side-nav-search input {
  padding-right: 36px;
}

.side-nav-search button {
  position: absolute;
  right: 6px;
  top: 50%;
  transform: translateY(-50%);
  background: transparent;
  border: none;
  cursor: pointer;
  color: var(--color-obsidian);
}

/* Side nav footer */
.side-nav-footer {
  margin-top: auto;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-8);
  padding-top: var(--spacing-12);
  border-top: 1px solid #222222;
}

.side-nav-meta {
  font-size: var(--text-caption);
  color: #888888;
  line-height: 1.3;
}

/* ==========================================================================
   Hero Section — Violet Skies & Monumental Type Shapes
   ========================================================================== */
.hero-section {
  background-color: var(--surface-iris-violet);
  color: var(--color-obsidian);
  position: relative;
  overflow: hidden;
  min-height: 580px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  border-bottom: 1px solid var(--color-obsidian);
  padding-top: var(--spacing-24);
}

.hero-container {
  max-width: var(--page-max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-24);
  width: 100%;
  position: relative;
  flex-grow: 1;
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: flex-start;
  gap: var(--spacing-24);
}

/* Top-Right Stacked Hero Headline per Screenshot */
.hero-date-block {
  text-align: right;
  z-index: 10;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
}

.hero-date-title {
  font-family: var(--font-abcmonumentgrotesk);
  font-size: clamp(38px, 6vw, 68px);
  line-height: 0.95;
  font-weight: var(--font-weight-regular);
  color: var(--color-obsidian);
  letter-spacing: -1.5px;
  margin-bottom: var(--spacing-12);
}

.hero-date-range {
  font-family: var(--font-abcmonumentgrotesk);
  font-size: clamp(24px, 3.5vw, 42px);
  line-height: 1.02;
  font-weight: var(--font-weight-regular);
  color: var(--color-obsidian);
  letter-spacing: -0.8px;
}

/* Constructivist Architectural Shape Stack */
.hero-shapes-wrapper {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 5;
}

/* Geometric Constructivist Centerpiece */
.hero-constructivist-composition {
  position: relative;
  width: 100%;
  max-width: 900px;
  margin-top: 20px;
  margin-bottom: 40px;
  z-index: 6;
}

/* Stepped architectural block matching screenshot */
.stepped-polygon-box {
  background-color: var(--surface-obsidian);
  position: relative;
  border: 1px solid var(--color-obsidian);
  border-radius: var(--radius-sm);
  padding: var(--spacing-36) var(--spacing-48);
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 380px;
  width: 82%;
  /* Constructivist step-down curve on right */
  border-top-right-radius: 200px;
  border-bottom-right-radius: 200px;
}

.stepped-polygon-box::before {
  content: "";
  position: absolute;
  top: -30px;
  left: 20%;
  width: 160px;
  height: 30px;
  background-color: var(--surface-obsidian);
  border-top: 1px solid var(--color-obsidian);
}

.numeral-step-top {
  font-family: var(--font-abcmonumentgrotesk);
  font-size: clamp(36px, 5vw, 64px);
  font-weight: var(--font-weight-regular);
  color: var(--color-iris-violet);
  margin-left: 24%;
  line-height: 1;
}

.hero-brand-headline {
  font-family: var(--font-abcmonumentgrotesk);
  font-size: clamp(28px, 4.5vw, 54px);
  font-weight: var(--font-weight-regular);
  color: var(--color-iris-violet);
  line-height: 1.05;
  letter-spacing: -1.2px;
  margin: var(--spacing-12) 0;
}

.numeral-step-bottom {
  font-family: var(--font-abcmonumentgrotesk);
  font-size: clamp(36px, 5vw, 64px);
  font-weight: var(--font-weight-regular);
  color: var(--color-iris-violet);
  margin-left: 24%;
  line-height: 1;
}

.hero-archive-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-8);
  background-color: var(--color-paper-white);
  border: 1px solid var(--color-obsidian);
  border-radius: var(--radius-buttons);
  padding: 4px 10px;
  font-size: var(--text-caption);
  font-weight: var(--font-weight-bold);
  cursor: pointer;
  margin-top: var(--spacing-12);
  width: fit-content;
  pointer-events: auto;
}

.hero-archive-badge:hover {
  background-color: var(--color-ash-gray);
}

/* Horizontal Floating Pill Navigation Bar per Screenshot */
.hero-pill-nav-container {
  width: 100%;
  overflow-x: auto;
  padding: 0 var(--spacing-24) var(--spacing-24);
  scrollbar-width: none;
  -ms-overflow-style: none;
  z-index: 20;
}

.hero-pill-nav-container::-webkit-scrollbar {
  display: none;
}

.hero-pill-bar {
  display: inline-flex;
  background-color: var(--color-paper-white);
  border: 1px solid var(--color-obsidian);
  border-radius: var(--radius-navpills);
  padding: 6px 12px;
  gap: var(--spacing-8);
  white-space: nowrap;
}

.hero-pill-item {
  color: var(--color-obsidian);
  font-size: var(--text-body-sm);
  font-weight: var(--font-weight-regular);
  padding: 6px 14px;
  border-radius: var(--radius-navpills);
  transition: all 0.15s ease;
}

.hero-pill-item:hover {
  background-color: var(--color-ash-gray);
}

.hero-pill-item.primary-pill {
  background-color: var(--color-obsidian);
  color: var(--color-paper-white);
  font-weight: var(--font-weight-bold);
}

.hero-pill-item.primary-pill:hover {
  background-color: var(--color-deep-iris);
}

/* ==========================================================================
   Editorial Curatorial / About Section
   ========================================================================== */
.about-section {
  background-color: var(--surface-paper-white);
  padding: var(--spacing-48) 0;
  border-bottom: 1px solid var(--color-obsidian);
}

.about-header-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: var(--spacing-24);
  border-bottom: 1px solid var(--color-obsidian);
  padding-bottom: var(--spacing-12);
}

.about-label {
  font-size: var(--text-subheading);
  font-weight: var(--font-weight-bold);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.about-curator-tag {
  font-size: var(--text-body-sm);
  color: var(--color-obsidian);
}

.about-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: var(--spacing-48);
  align-items: start;
}

.about-lead-text {
  font-family: var(--font-bradfordll);
  font-size: clamp(20px, 2.2vw, 28px);
  line-height: 1.25;
  color: var(--color-obsidian);
  margin-bottom: var(--spacing-24);
}

.about-body-text {
  font-family: var(--font-bradfordll);
  font-size: var(--text-body-lg);
  line-height: 1.45;
  color: #222222;
  margin-bottom: var(--spacing-24);
}

.curatorial-quote {
  border-left: 2px solid var(--color-iris-violet);
  padding-left: var(--spacing-16, 16px);
  margin: var(--spacing-24) 0;
  font-style: italic;
  font-family: var(--font-bradfordll);
  font-size: var(--text-subheading);
  line-height: 1.35;
}

.about-sidebar {
  background-color: var(--surface-ash-gray);
  border: 1px solid var(--color-obsidian);
  border-radius: var(--radius-cards);
  padding: var(--spacing-24);
}

.about-sidebar-title {
  font-size: var(--text-heading-sm);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-12);
  border-bottom: 1px solid var(--color-obsidian);
  padding-bottom: var(--spacing-8);
}

.curatorial-team-list {
  list-style: none;
  margin-bottom: var(--spacing-24);
}

.curatorial-team-list li {
  padding: 6px 0;
  font-size: var(--text-body-sm);
  border-bottom: 1px solid var(--color-mist-gray);
  display: flex;
  justify-content: space-between;
}

.curatorial-team-list li:last-child {
  border-bottom: none;
}

.curatorial-team-list strong {
  color: var(--color-obsidian);
}

/* Curatorial Framework Cards */
.frameworks-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-12);
  margin-top: var(--spacing-32);
}

.framework-card {
  background-color: var(--surface-paper-white);
  border: 1px solid var(--color-obsidian);
  border-radius: var(--radius-cards);
  padding: var(--spacing-16, 16px);
  transition: background-color 0.15s ease;
}

.framework-card:hover {
  background-color: var(--surface-ash-gray);
}

.framework-number {
  font-size: var(--text-caption);
  font-weight: var(--font-weight-bold);
  color: var(--color-iris-violet);
  margin-bottom: var(--spacing-4);
  letter-spacing: 0.5px;
}

.framework-title {
  font-size: var(--text-subheading);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-8);
  line-height: 1.15;
}

.framework-desc {
  font-family: var(--font-bradfordll);
  font-size: var(--text-body-sm);
  line-height: 1.35;
  color: #333333;
}

/* ==========================================================================
   Biennale Program Leaflet & Event Calendar
   ========================================================================== */
.program-section {
  background-color: var(--surface-paper-white);
  padding: var(--spacing-48) 0;
  border-bottom: 1px solid var(--color-obsidian);
}

.section-head {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-12);
  margin-bottom: var(--spacing-24);
  border-bottom: 1px solid var(--color-obsidian);
  padding-bottom: var(--spacing-16, 16px);
}

.section-head-top {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--spacing-8);
}

.section-title {
  font-size: var(--text-heading-lg);
  font-weight: var(--font-weight-bold);
  letter-spacing: -0.5px;
}

.section-subtitle {
  font-size: var(--text-body-sm);
  color: #555555;
}

/* Filter controls bar */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-12);
  background-color: var(--surface-ash-gray);
  border: 1px solid var(--color-obsidian);
  border-radius: var(--radius-cards);
  padding: var(--spacing-12);
  margin-bottom: var(--spacing-24);
}

.filter-group {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--spacing-4);
}

.filter-label {
  font-size: var(--text-caption);
  font-weight: var(--font-weight-bold);
  margin-right: var(--spacing-4);
  text-transform: uppercase;
}

/* Program Event Cards Grid */
.events-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-12);
}

/* Event Card per Design.md:
   White surface, 1px Obsidian border, 3-7px radius, 12px padding.
   Date row in 12px uppercase, title in ABCMonumentGrotesk 19-25px, venue line in 12px.
   Some event cards have a dark Obsidian variant with white text and Iris Violet accents. */
.event-card {
  background-color: var(--surface-paper-white);
  border: 1px solid var(--color-obsidian);
  border-radius: var(--radius-cards);
  padding: var(--card-padding);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 230px;
  position: relative;
  transition: transform 0.15s ease, background-color 0.15s ease;
}

.event-card:hover {
  background-color: var(--surface-ash-gray);
}

/* Dark Obsidian Variant Card for Constructivist Rhythm */
.event-card.event-card-dark {
  background-color: var(--surface-obsidian);
  color: var(--color-paper-white);
  border-color: var(--color-obsidian);
}

.event-card.event-card-dark:hover {
  background-color: #111111;
}

.event-card.event-card-dark .event-title {
  color: var(--color-paper-white);
}

.event-card.event-card-dark .event-venue-line {
  color: #cccccc;
}

.event-card.event-card-dark .tag-pill {
  background-color: transparent;
  border-color: var(--color-iris-violet);
  color: var(--color-iris-violet);
}

.event-card.event-card-dark .tag-pill:hover {
  background-color: var(--color-iris-violet);
  color: var(--color-paper-white);
}

.event-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-8);
}

.event-date-row {
  font-size: var(--text-caption);
  font-weight: var(--font-weight-bold);
  text-transform: uppercase;
  letter-spacing: var(--tracking-caption);
}

.event-title {
  font-size: var(--text-heading-sm);
  font-weight: var(--font-weight-regular);
  line-height: var(--leading-heading-sm);
  margin-bottom: var(--spacing-8);
  letter-spacing: -0.3px;
}

.event-venue-line {
  font-size: var(--text-caption);
  color: #444444;
  margin-bottom: var(--spacing-12);
  line-height: 1.3;
}

.event-card-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-8);
  margin-top: auto;
  padding-top: var(--spacing-8);
  border-top: 1px solid var(--color-mist-gray);
}

.event-card.event-card-dark .event-card-bottom {
  border-top-color: #222222;
}

.event-actions {
  display: flex;
  gap: var(--spacing-4);
}

/* ==========================================================================
   Participating Artists Index
   ========================================================================== */
.artists-section {
  background-color: var(--surface-ash-gray);
  padding: var(--spacing-48) 0;
  border-bottom: 1px solid var(--color-obsidian);
}

.artists-controls {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-12);
  margin-bottom: var(--spacing-24);
}

.artists-search-wrap {
  display: flex;
  max-width: 480px;
}

.alphabet-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 3px;
}

.alpha-btn {
  background-color: var(--color-paper-white);
  border: 1px solid var(--color-obsidian);
  border-radius: var(--radius-buttons);
  padding: 3px 8px;
  font-size: var(--text-caption);
  font-family: var(--font-abcmonumentgrotesk);
  font-weight: var(--font-weight-bold);
  cursor: pointer;
  min-width: 26px;
  text-align: center;
}

.alpha-btn:hover,
.alpha-btn.active {
  background-color: var(--color-obsidian);
  color: var(--color-paper-white);
}

.artists-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-8);
}

.artist-card {
  background-color: var(--surface-paper-white);
  border: 1px solid var(--color-obsidian);
  border-radius: var(--radius-cards);
  padding: var(--card-padding);
  cursor: pointer;
  transition: all 0.15s ease;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 140px;
}

.artist-card:hover {
  border-color: var(--color-iris-violet);
  background-color: #fafaff;
  transform: translateY(-2px);
}

.artist-name {
  font-size: var(--text-body-lg);
  font-weight: var(--font-weight-bold);
  line-height: 1.15;
  margin-bottom: var(--spacing-4);
}

.artist-origin {
  font-size: var(--text-caption);
  color: #666666;
  margin-bottom: var(--spacing-8);
}

.artist-artwork {
  font-family: var(--font-bradfordll);
  font-size: var(--text-body-sm);
  font-style: italic;
  color: var(--color-obsidian);
  line-height: 1.25;
}

.artist-venue-tag {
  align-self: flex-start;
  margin-top: var(--spacing-8);
  font-size: 11px;
  font-weight: var(--font-weight-bold);
  color: var(--color-iris-violet);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* ==========================================================================
   Venue Map & Guide — Constructivist Violet Canvas
   ========================================================================== */
.venues-section {
  background-color: var(--surface-paper-white);
  padding: var(--spacing-48) 0;
  border-bottom: 1px solid var(--color-obsidian);
}

/* Map Section per Prompt Guide:
   "Iris Violet (#7373ff) full-bleed background. White diamond-shaped markers (14px, rotated 45°)
   labeled A through F in ABCMonumentGrotesk 14px weight 700. Street network rendered as 1px #23234d lines" */
.map-canvas-container {
  background-color: var(--surface-iris-violet);
  border: 1px solid var(--color-obsidian);
  border-radius: var(--radius-cards);
  position: relative;
  overflow: hidden;
  height: 440px;
  margin-bottom: var(--spacing-32);
}

.map-svg {
  width: 100%;
  height: 100%;
  display: block;
}

.map-marker {
  cursor: pointer;
  transition: transform 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
  transform-origin: center;
}

.map-marker:hover,
.map-marker.active {
  transform: scale(1.3);
}

.map-marker-shape {
  fill: var(--color-paper-white);
  stroke: var(--color-obsidian);
  stroke-width: 1.5px;
}

.map-marker-text {
  font-family: var(--font-abcmonumentgrotesk);
  font-size: 14px;
  font-weight: 700;
  fill: var(--color-obsidian);
  text-anchor: middle;
  dominant-baseline: central;
}

.map-legend-overlay {
  position: absolute;
  bottom: var(--spacing-12);
  left: var(--spacing-12);
  background-color: var(--color-paper-white);
  border: 1px solid var(--color-obsidian);
  border-radius: var(--radius-buttons);
  padding: 6px 12px;
  font-size: var(--text-caption);
  font-weight: var(--font-weight-bold);
  display: flex;
  align-items: center;
  gap: var(--spacing-8);
}

/* Venue Cards Directory per Design.md:
   White surface, 1px Obsidian border, 7px radius, 12-16px padding.
   Letter label (A, B, C) at top, venue name in ABCMonumentGrotesk 19-25px, action links */
.venues-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-12);
}

.venue-card {
  background-color: var(--surface-paper-white);
  border: 1px solid var(--color-obsidian);
  border-radius: var(--radius-inputs);
  padding: var(--spacing-16, 16px);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 260px;
  transition: all 0.15s ease;
}

.venue-card:hover,
.venue-card.highlighted {
  border-color: var(--color-iris-violet);
  background-color: #fafaff;
}

.venue-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-8);
}

.venue-letter-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background-color: var(--color-obsidian);
  color: var(--color-paper-white);
  font-size: 14px;
  font-weight: var(--font-weight-bold);
  border-radius: var(--radius-buttons);
}

.venue-district {
  font-size: var(--text-caption);
  text-transform: uppercase;
  color: #666666;
  font-weight: var(--font-weight-bold);
}

.venue-name {
  font-size: var(--text-heading-sm);
  font-weight: var(--font-weight-bold);
  line-height: 1.15;
  margin-bottom: var(--spacing-8);
}

.venue-address {
  font-size: var(--text-body-sm);
  color: #333333;
  margin-bottom: var(--spacing-4);
}

.venue-details {
  font-family: var(--font-bradfordll);
  font-size: var(--text-body-sm);
  color: #555555;
  margin-bottom: var(--spacing-12);
  line-height: 1.35;
}

.venue-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-4);
  margin-top: auto;
  padding-top: var(--spacing-8);
  border-top: 1px solid var(--color-mist-gray);
}

/* ==========================================================================
   Publications & Editions Store
   ========================================================================== */
.publications-section {
  background-color: var(--surface-ash-gray);
  padding: var(--spacing-48) 0;
  border-bottom: 1px solid var(--color-obsidian);
}

.publications-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-16, 16px);
}

.publication-card {
  background-color: var(--surface-paper-white);
  border: 1px solid var(--color-obsidian);
  border-radius: var(--radius-cards);
  padding: var(--spacing-16, 16px);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.publication-cover-mock {
  height: 220px;
  background-color: var(--color-deep-iris);
  border: 1px solid var(--color-obsidian);
  border-radius: var(--radius-buttons);
  margin-bottom: var(--spacing-12);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: var(--spacing-16, 16px);
  color: var(--color-paper-white);
  position: relative;
  overflow: hidden;
}

.pub-tag {
  font-size: 11px;
  font-weight: 700;
  color: var(--color-iris-violet);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.pub-title-mock {
  font-size: 20px;
  font-weight: 700;
  line-height: 1.1;
  color: var(--color-paper-white);
}

.pub-author-mock {
  font-size: 13px;
  color: #cccccc;
}

.pub-price-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: var(--spacing-8);
  padding-top: var(--spacing-8);
  border-top: 1px solid var(--color-ash-gray);
}

.pub-price {
  font-size: var(--text-subheading);
  font-weight: var(--font-weight-bold);
}

/* ==========================================================================
   Admission, Tickets & Practical Visitor Guide
   ========================================================================== */
.tickets-section {
  background-color: var(--surface-paper-white);
  padding: var(--spacing-48) 0;
  border-bottom: 1px solid var(--color-obsidian);
}

.tickets-cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-12);
  margin-bottom: var(--spacing-32);
}

.ticket-tier-card {
  border: 1px solid var(--color-obsidian);
  border-radius: var(--radius-cards);
  padding: var(--spacing-24);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  background-color: var(--surface-paper-white);
}

.ticket-tier-card.featured {
  border: 2px solid var(--color-iris-violet);
  background-color: #fafaff;
}

.ticket-name {
  font-size: var(--text-heading-sm);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-4);
}

.ticket-price {
  font-size: clamp(28px, 3.5vw, 42px);
  font-weight: var(--font-weight-bold);
  color: var(--color-obsidian);
  margin-bottom: var(--spacing-12);
  line-height: 1;
}

.ticket-price small {
  font-size: var(--text-body-sm);
  font-weight: var(--font-weight-regular);
  color: #666666;
}

.ticket-features {
  list-style: none;
  margin-bottom: var(--spacing-24);
}

.ticket-features li {
  padding: 6px 0;
  font-size: var(--text-body-sm);
  border-bottom: 1px solid var(--color-mist-gray);
  display: flex;
  align-items: center;
  gap: var(--spacing-8);
}

.ticket-features li:last-child {
  border-bottom: none;
}

/* Accessibility & Inclusivity Callout */
.accessibility-box {
  background-color: var(--surface-ash-gray);
  border: 1px solid var(--color-obsidian);
  border-radius: var(--radius-cards);
  padding: var(--spacing-24);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-24);
}

.access-title {
  font-size: var(--text-subheading);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-8);
}

.access-text {
  font-family: var(--font-bradfordll);
  font-size: var(--text-body-sm);
  line-height: 1.45;
  color: #333333;
}

/* ==========================================================================
   Colophon & Footer Broadsheet
   ========================================================================== */
.footer-colophon {
  background-color: var(--surface-obsidian);
  color: var(--color-paper-white);
  padding: var(--spacing-60) 0 var(--spacing-36);
  border-top: 1px solid var(--color-obsidian);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: var(--spacing-32);
  margin-bottom: var(--spacing-48);
}

.footer-brand-title {
  font-size: var(--text-heading);
  font-weight: var(--font-weight-bold);
  color: var(--color-iris-violet);
  margin-bottom: var(--spacing-12);
  line-height: 1.1;
}

.footer-brand-desc {
  font-family: var(--font-bradfordll);
  font-size: var(--text-body-sm);
  color: #aaaaaa;
  line-height: 1.4;
  margin-bottom: var(--spacing-16, 16px);
  max-width: 380px;
}

.footer-col-title {
  font-size: var(--text-body-sm);
  font-weight: var(--font-weight-bold);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--color-paper-white);
  margin-bottom: var(--spacing-12);
  border-bottom: 1px solid #333333;
  padding-bottom: var(--spacing-4);
}

.footer-links {
  list-style: none;
}

.footer-links li {
  padding: 4px 0;
}

.footer-links a {
  color: #cccccc;
  font-size: var(--text-body-sm);
}

.footer-links a:hover {
  color: var(--color-iris-violet);
}

.footer-newsletter-form {
  display: flex;
  gap: var(--spacing-4);
  margin-top: var(--spacing-8);
}

.footer-bottom {
  border-top: 1px solid #222222;
  padding-top: var(--spacing-24);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--spacing-12);
  font-size: var(--text-caption);
  color: #777777;
}

/* ==========================================================================
   Modals (Ticket Booking, Artist Dossier, Archival View)
   ========================================================================== */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: rgba(0, 0, 0, 0.7);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-16, 16px);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s ease, visibility 0.2s ease;
}

.modal-overlay.open {
  opacity: 1;
  visibility: visible;
}

.modal-dialog {
  background-color: var(--surface-paper-white);
  border: 1px solid var(--color-obsidian);
  border-radius: var(--radius-cards);
  width: 100%;
  max-width: 640px;
  max-height: 90vh;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  position: relative;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-16, 16px);
  border-bottom: 1px solid var(--color-obsidian);
  background-color: var(--surface-ash-gray);
}

.modal-title {
  font-size: var(--text-heading-sm);
  font-weight: var(--font-weight-bold);
}

.modal-close-btn {
  background: transparent;
  border: 1px solid var(--color-obsidian);
  border-radius: var(--radius-buttons);
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-weight: bold;
}

.modal-close-btn:hover {
  background-color: var(--color-obsidian);
  color: var(--color-paper-white);
}

.modal-body {
  padding: var(--spacing-24);
}

.modal-footer {
  padding: var(--spacing-16, 16px);
  border-top: 1px solid var(--color-obsidian);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--spacing-8);
  background-color: var(--surface-ash-gray);
}

/* Ticket form inside modal */
.ticket-form-row {
  margin-bottom: var(--spacing-16, 16px);
}

.ticket-form-label {
  display: block;
  font-size: var(--text-caption);
  font-weight: var(--font-weight-bold);
  text-transform: uppercase;
  margin-bottom: var(--spacing-4);
}

.ticket-summary-box {
  background-color: var(--surface-ash-gray);
  border: 1px solid var(--color-obsidian);
  border-radius: var(--radius-buttons);
  padding: var(--spacing-12);
  margin-top: var(--spacing-16, 16px);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* Toast message notification */
.toast-notice {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background-color: var(--color-obsidian);
  color: var(--color-paper-white);
  border: 1px solid var(--color-iris-violet);
  border-radius: var(--radius-buttons);
  padding: 12px 18px;
  font-size: var(--text-body-sm);
  z-index: 1100;
  display: flex;
  align-items: center;
  gap: var(--spacing-12);
  transform: translateY(100px);
  opacity: 0;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.3s ease;
}

.toast-notice.show {
  transform: translateY(0);
  opacity: 1;
}

/* ==========================================================================
   Responsive Breakpoints
   ========================================================================== */
@media (max-width: 1024px) {
  .events-grid,
  .venues-grid,
  .publications-grid,
  .tickets-cards-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .artists-grid {
    grid-template-columns: repeat(3, 1fr);
  }

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

@media (max-width: 768px) {
  .hero-container {
    grid-template-columns: 1fr;
  }

  .hero-date-block {
    text-align: left;
    align-items: flex-start;
  }

  .stepped-polygon-box {
    width: 100%;
    border-top-right-radius: 60px;
    border-bottom-right-radius: 60px;
    padding: var(--spacing-24);
  }

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

  .accessibility-box {
    grid-template-columns: 1fr;
  }

  .events-grid,
  .venues-grid,
  .publications-grid,
  .tickets-cards-grid {
    grid-template-columns: 1fr;
  }

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

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

  .header-center {
    display: none;
  }
}

@media (max-width: 480px) {
  .artists-grid {
    grid-template-columns: 1fr;
  }

  .container {
    padding: 0 var(--spacing-12);
  }

  .top-bar-inner {
    padding: 8px var(--spacing-12);
  }
}