/*
Theme Name: Nicolas Heiringhoff Work Catalogue
Theme URI: https://catalogue.nicolas-heiringhoff.com
Author: Nicolas Heiringhoff
Author URI: https://nicolas-heiringhoff.com
Description: Modern responsive migration of the twentydelph art catalogue theme. Preserves exact layout, fonts (Source Sans Pro + Pontano Sans), and color scheme (#1982D1 accent). Version 2.0 adds full responsive support.
Version: 2.0.0
Requires at least: 6.0
Tested up to: 6.7
Requires PHP: 8.0
License: Private
Text Domain: nh-catalogue
*/

/* ============================================================
   CSS CUSTOM PROPERTIES
   ============================================================ */

:root {
  /* Colors — exact matches from original theme */
  --color-bg:          #ffffff;
  --color-text:        #141332;        /* original body color */
  --color-muted:       #666666;        /* original muted/subtitle color */
  --color-muted-light: #999999;        /* footer copyright */
  --color-accent:      #1982D1;        /* exact original blue */
  --color-accent-dark: #1570b8;        /* hover darken */
  --color-border:      #e7e7e7;        /* original #primary border */
  --color-border-dash: #999999;        /* original werk-text border */

  /* Typography — exact original fonts */
  --font-body:    'Source Sans Pro', "Helvetica Neue", Helvetica, Arial, sans-serif;
  --font-title:   'Pontano Sans', "Helvetica Neue", Helvetica, Arial, sans-serif;

  /* Font weights from original */
  --weight-light:   200;
  --weight-regular: 300;
  --weight-medium:  400;
  --weight-semibold: 600;

  /* Type scale */
  --text-xs:   0.65rem;    /* ~10.5px — tags, labels */
  --text-sm:   0.75rem;    /* 12px — footer, captions */
  --text-base: 0.875rem;   /* 14px — body */
  --text-md:   1rem;       /* 16px */
  --text-lg:   1.1rem;     /* ~17.5px */
  --text-xl:   1.2rem;     /* ~19px */
  --text-2xl:  1.4rem;     /* ~22px — title */

  /* 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-16: 4rem;

  /* Layout */
  --max-width:      980px;          /* original was 920px + 30px padding each side */
  --page-padding-x: clamp(1rem, 3.5vw, 2rem);

  /* Grid */
  --grid-cols: 4;
  --grid-gap:  clamp(0.5rem, 2vw, 1.2rem);

  /* Transitions */
  --transition: 160ms ease;
}

/* ============================================================
   RESET & BASE
   ============================================================ */

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

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

body {
  margin: 0;
  padding: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--text-md);
  font-weight: var(--weight-regular);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

ul, ol {
  list-style: none;
  margin: 0;
  padding: 0;
}

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

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

a:hover, a:focus-visible {
  color: var(--color-accent-dark);
}

h1, h2, h3, h4, h5, h6 {
  margin: 0;
  font-weight: var(--weight-medium);
  line-height: 1.3;
}

p { margin: 0; }

/* ============================================================
   PAGE WRAPPER
   ============================================================ */

#page {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--page-padding-x);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ============================================================
   SKIP LINK (accessibility)
   ============================================================ */

.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  background: var(--color-accent);
  color: #fff;
  padding: 0.4rem 0.8rem;
  font-size: var(--text-sm);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  z-index: 9999;
}

.skip-link:focus {
  top: 0.5rem;
}

/* ============================================================
   SITE HEADER  (#branding)
   ============================================================ */

#branding {
  position: relative;
  z-index: 9999;
  overflow: visible;
  padding-top: 10px;
  padding-bottom: 5px;
}

/* Site title — left, uppercase, tracked, Pontano Sans */
#site-title {
  float: left;
  padding: 20px 0 0;
  font-family: var(--font-title);
}

#site-title a {
  font-size: clamp(1rem, 2.4vw, var(--text-2xl));
  font-weight: var(--weight-regular);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-text);
  text-decoration: none;
  display: block;
  line-height: 1.2;
}

#site-title a:hover,
#site-title a:focus {
  color: var(--color-text);
  text-decoration: none;
}

/* Date range "1991 – today" — right-aligned, subtle */
h2#site-subtitle {
  display: block;
  float: right;
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: var(--weight-light);
  letter-spacing: 0.05em;
  color: var(--color-muted);
  padding-top: 31px;
  clear: right;
  margin: 0;
}

.clearfix::after,
#branding::after {
  content: '';
  display: table;
  clear: both;
}

/* ============================================================
   FILTER BAR  (#filtermenu)
   ============================================================ */

#filtermenu {
  font-family: var(--font-body);
  font-weight: var(--weight-medium);
  font-size: var(--text-base);
  line-height: 1.2;
  color: var(--color-muted);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  margin: 0 0 10px 0;
  padding: 6px 0;
  display: flex;
  align-items: center;
  flex-wrap: nowrap;
  gap: 0;
}

#filtermenu a {
  color: var(--color-muted);
  text-decoration: none;
}

#filtermenu a:hover {
  color: var(--color-accent);
  text-decoration: none;
}

/* Count label "All X Artworks" */
#filtermenu .filter-count {
  white-space: nowrap;
  text-transform: uppercase;
  font-size: 0.85em;
  letter-spacing: 0.1em;
  padding-right: 30px;
  flex-shrink: 0;
}

#filtermenu .filter-count a {
  color: var(--color-text);
  font-weight: var(--weight-medium);
}

/* Filter nav items */
#filtermenu .filter-items {
  display: flex;
  align-items: center;
  flex: 1;
  position: relative;
}

/* Each dropdown wrapper */
.filter-dropdown {
  position: relative;
  padding-right: 20px;
  flex-shrink: 0;
}

/* Dropdown trigger label */
.filter-dropdown > a {
  display: flex;
  align-items: center;
  gap: 4px;
  text-transform: uppercase;
  font-size: 0.85em;
  letter-spacing: 0.1em;
  color: var(--color-muted);
  white-space: nowrap;
  padding: 2px 0;
}

.filter-dropdown > a .arrow {
  display: inline-block;
  width: 0;
  height: 0;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 5px solid var(--color-muted);
  margin-left: 2px;
  flex-shrink: 0;
  transition: transform var(--transition);
}

/* Dropdown panel */
.filter-dropdown__panel {
  position: absolute;
  top: 100%;
  left: -10px;
  display: none;
  background: #fff;
  min-width: 140px;
  z-index: 1000;
  box-shadow: 2px 2px 6px rgba(0,0,0,0.12);
  padding: 8px 0;
}

.filter-dropdown:hover .filter-dropdown__panel,
.filter-dropdown:focus-within .filter-dropdown__panel {
  display: block;
}

.filter-dropdown:hover > a .arrow {
  transform: rotate(180deg);
}

.filter-dropdown__panel a {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 5px 20px;
  font-size: 0.85em;
  letter-spacing: 0.06em;
  color: var(--color-text);
  text-transform: none;
  white-space: nowrap;
}

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

/* Color swatches in dropdown */
.filter-dropdown__panel img {
  display: inline-block;
  vertical-align: middle;
  height: 14px;
  width: auto;
  max-width: 40px;
}

/* Shape icons in dropdown */
.filter-dropdown__panel .shape-icon {
  display: inline-block;
  vertical-align: middle;
}

/* Search form — pushed to right end */
#filtermenu #searchform,
#filtermenu .filter-search {
  margin-left: auto;
  flex-shrink: 0;
}

#filtermenu #searchform input[type="text"],
#filtermenu #searchform input[type="search"] {
  border: none;
  border-bottom: 1px solid var(--color-border);
  background: transparent;
  font-family: var(--font-body);
  font-size: var(--text-sm);
  letter-spacing: 0.06em;
  color: var(--color-text);
  padding: 2px 0;
  width: 140px;
  outline: none;
  text-transform: uppercase;
}

#filtermenu #searchform input[type="text"]::placeholder,
#filtermenu #searchform input[type="search"]::placeholder {
  color: var(--color-muted);
}

#filtermenu #searchform input[type="text"]:focus,
#filtermenu #searchform input[type="search"]:focus {
  border-bottom-color: var(--color-accent);
}

#filtermenu #searchform input[type="submit"] {
  display: none; /* submit hidden, use enter key */
}

/* ============================================================
   ARTWORK GRID  (#liste_start → .artworks-grid)
   ============================================================ */

#primary {
  padding: 0;
  border-top: none; /* border now on filtermenu */
  flex: 1;
}

#content {
  padding: 10px 0 0 0;
}

/* Modern CSS Grid replaces the old float/inline-block approach */
.artworks-grid {
  display: grid;
  grid-template-columns: repeat(var(--grid-cols), 1fr);
  gap: var(--grid-gap);
  row-gap: calc(var(--grid-gap) * 2.5);
  margin-bottom: var(--space-12);
}

/* Desktop: 4 columns */
@media (min-width: 1025px) {
  .artworks-grid { --grid-cols: 4; }
}

/* Tablet: 2 columns */
@media (min-width: 768px) and (max-width: 1024px) {
  .artworks-grid { --grid-cols: 2; }
}

/* Mobile: 1 column */
@media (max-width: 767px) {
  .artworks-grid { --grid-cols: 1; }
}

/* Artwork card */
.artwork-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.artwork-card__link {
  display: block;
  width: 100%;
  text-decoration: none;
}

.artwork-card__link:hover img {
  opacity: 0.85;
}

.artwork-card__img-wrap {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 6px;
}

.artwork-card__img {
  width: 100%;
  height: auto;
  object-fit: contain;
  transition: opacity var(--transition);
}

.artwork-card__title {
  font-size: 0.8em;
  color: var(--color-muted);
  letter-spacing: 0.03em;
  line-height: 1.4;
  font-style: italic;
  padding: 0 4px;
  margin-top: 2px;
}

/* ============================================================
   PAGINATION
   ============================================================ */

.pagination {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 2rem;
  padding: 1.5rem 0;
  border-top: 1px solid var(--color-border);
  margin-bottom: var(--space-12);
}

.pagination a {
  font-size: var(--text-sm);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-accent);
  font-weight: var(--weight-medium);
}

.pagination a:hover {
  color: var(--color-accent-dark);
  text-decoration: none;
}

.pagination .nav-previous a::before { content: '← '; }
.pagination .nav-next a::after     { content: ' →'; }

/* ============================================================
   SINGLE ARTWORK PAGE  (60% image | 40% info)
   ============================================================ */

#wrapper {
  display: grid;
  grid-template-columns: 60fr 40fr;
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: start;
  padding: 20px 0 40px;
}

/* Left column: artwork image */
#abbildung {
  /* float removed — now a grid item */
  padding-top: 20px;
  padding-bottom: 20px;
}

#abbildung img {
  width: 100%;
  height: auto;
  display: block;
}

#abbildung a {
  display: block;
  cursor: zoom-in;
}

/* Right column: artwork info */
#rechtespalte {
  padding-left: 20px;
  padding-top: 20px;
  /* float + fixed width removed — now a grid item */
}

#werkbeschreibung {
  padding-top: 30px;
}

#werkbeschreibung h4 {
  font-family: var(--font-body);
  font-size: clamp(1rem, 2.2vw, 1.2rem);
  font-weight: var(--weight-medium);
  font-style: italic;
  text-transform: none;
  letter-spacing: 0.02em;
  line-height: 1.35;
  color: var(--color-text);
  margin-bottom: var(--space-5);
}

#werkbeschreibung h5 {
  font-family: var(--font-body);
  font-size: var(--text-md);
  font-weight: var(--weight-regular);
  color: var(--color-text);
  line-height: 1.7;
  margin: 0;
}

#werkbeschreibung h5:first-letter {
  text-transform: uppercase;
}

#werkbeschreibung p {
  font-size: var(--text-base);
  font-weight: var(--weight-regular);
  color: var(--color-text);
  margin-bottom: 4px;
}

#werkbeschreibung p.private {
  padding-top: 15px;
  color: var(--color-muted);
  font-size: var(--text-sm);
}

/* Work story block */
#work_story {
  margin-top: 1rem;
  font-size: var(--text-base);
  line-height: 1.7;
  color: var(--color-text);
}

/* Prev / Next navigation */
#nav-single {
  margin: 2.5rem 0 0.75rem 0;
}

#nav-single ul {
  display: flex;
  gap: 1.5rem;
  list-style: none;
  padding: 0;
  margin: 0;
}

#nav-single ul li {
  display: inline;
}

#nav-single a {
  font-size: var(--text-sm);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  font-weight: var(--weight-medium);
}

#nav-single a:hover {
  color: var(--color-accent-dark);
  text-decoration: none;
}

/* Similar works / tags */
#schlagworte {
  text-align: left;
  font-size: 0.82em;
  margin-top: 0;
  margin-bottom: 20px;
  padding: 10px 0 0 0;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

#schlagworte ul {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.4rem;
  margin: 0;
  padding: 0;
}

#schlagworte ul li {
  display: inline-flex;
  align-items: center;
  font-weight: var(--weight-medium);
  font-size: 0.82em;
  text-transform: uppercase;
}

/* "Similar works:" prefix label */
#schlagworte ul::before {
  content: 'Similar works: ';
  color: var(--color-muted);
  font-size: 0.85em;
  white-space: nowrap;
  margin-right: 4px;
}

#schlagworte ul li a {
  color: var(--color-accent);
  letter-spacing: 0.06em;
}

#schlagworte ul li a:hover {
  color: var(--color-accent-dark);
}

/* Separator between tag items */
#schlagworte ul li + li::before {
  content: '·';
  color: var(--color-muted);
  margin-right: 0.4rem;
}

/* ============================================================
   FOOTER INTRO TEXT  (#werk-text)
   ============================================================ */

#werk-text {
  border-top: 1px dotted var(--color-border-dash);
  padding-top: 25px;
  padding-bottom: 0;
  font-size: var(--text-base);
  clear: both;
  margin-top: 40px;
  line-height: 1.7;
  color: var(--color-text);
}

#werk-text p {
  padding-bottom: 15px;
}

#werk-text a {
  color: var(--color-accent);
}

/* ============================================================
   SITE FOOTER  (#colophon / #site-generator)
   ============================================================ */

#colophon {
  border-top: 1px dashed var(--color-border-dash);
  padding-top: 20px;
  padding-bottom: 30px;
  margin-top: 40px;
  clear: both;
}

#site-generator {
  color: var(--color-muted-light);
  font-size: var(--text-sm);
  letter-spacing: 0.09em;
  line-height: 2.2;
  text-align: left;
  padding: 0;
}

#site-generator ul {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0 0.75rem;
  list-style: none;
  padding: 0;
  margin: 0;
}

#site-generator ul li {
  display: inline;
  text-transform: uppercase;
}

#site-generator a {
  color: var(--color-accent);
  text-transform: uppercase;
}

#site-generator a:hover {
  color: var(--color-accent-dark);
}

/* ============================================================
   OVERLAY (single page lightbox — preserved from original)
   ============================================================ */

div#overlay {
  display: none;
  z-index: 2;
  background: #fff;
  position: fixed;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  text-align: center;
  margin: 0;
  opacity: 0.95;
  overflow-y: auto;
}

div#specialBox {
  display: none;
  z-index: 3;
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  max-width: 90vw;
  max-height: 90vh;
  overflow: auto;
}

div#specialBox img {
  max-height: 80vh;
  width: auto;
  max-width: 90vw;
}

div#specialBox h4 {
  font-size: var(--text-lg);
  margin-top: 0.75rem;
  font-weight: var(--weight-medium);
  font-style: italic;
}

.btn_close {
  display: inline-block;
  margin-top: 1rem;
  background: transparent;
  border: 1px solid var(--color-border-dash);
  color: var(--color-muted);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 4px 14px;
  cursor: pointer;
  transition: all var(--transition);
}

.btn_close:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

/* ============================================================
   404 / EMPTY STATES
   ============================================================ */

.no-results {
  padding: 4rem 0;
  text-align: center;
  color: var(--color-muted);
  font-size: var(--text-base);
  letter-spacing: 0.05em;
  min-height: 300px;
}

/* ============================================================
   WP ALIGNMENT HELPERS (compatibility)
   ============================================================ */

.alignleft  { display: inline; float: left;  margin-right: 1.5rem; }
.alignright { display: inline; float: right; margin-left: 1.5rem; }
.aligncenter { display: block; margin: 0 auto; clear: both; }
.wp-caption { max-width: 100%; }
.wp-caption-text { font-size: var(--text-sm); color: var(--color-muted); margin-top: 4px; }

/* ============================================================
   SCREEN READER ONLY
   ============================================================ */

.assistive-text, .screen-reader-text {
  position: absolute;
  clip: rect(1px, 1px, 1px, 1px);
  width: 1px;
  height: 1px;
  overflow: hidden;
}

/* ============================================================
   RESPONSIVE: TABLET (768–1024px)
   ============================================================ */

@media (max-width: 1024px) {
  /* Single page: still side-by-side on tablet */
  #wrapper {
    grid-template-columns: 58fr 42fr;
    gap: 2rem;
  }
}

/* ============================================================
   RESPONSIVE: MOBILE (<768px)
   ============================================================ */

@media (max-width: 767px) {

  /* Header */
  #site-title {
    float: none;
    padding-top: 14px;
  }

  #site-title a {
    font-size: clamp(0.85rem, 5vw, 1rem);
    letter-spacing: 0.1em;
  }

  h2#site-subtitle {
    float: none;
    padding-top: 4px;
    display: block;
    font-size: var(--text-sm);
    margin-bottom: 8px;
  }

  /* Filter bar: horizontally scrollable */
  #filtermenu {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    flex-wrap: nowrap;
    padding-bottom: 8px;
  }

  #filtermenu::-webkit-scrollbar { display: none; }

  .filter-dropdown {
    flex-shrink: 0;
  }

  #filtermenu .filter-count {
    flex-shrink: 0;
  }

  /* Dropdown panels go upward on mobile to avoid clipping */
  .filter-dropdown__panel {
    bottom: 100%;
    top: auto;
  }

  /* Search */
  #filtermenu #searchform input[type="text"],
  #filtermenu #searchform input[type="search"] {
    width: 100px;
  }

  /* Single artwork: stack vertically */
  #wrapper {
    grid-template-columns: 1fr;
    gap: var(--space-6);
    padding: 10px 0 30px;
  }

  #rechtespalte {
    padding-left: 0;
    padding-top: 0;
  }

  #werkbeschreibung {
    padding-top: 10px;
  }

  #nav-single {
    margin-top: 1.5rem;
  }

  /* Footer */
  #site-generator ul {
    flex-direction: column;
    align-items: flex-start;
    gap: 2px;
    line-height: 1.8;
  }
}

/* ============================================================
   RESPONSIVE: SMALL MOBILE (<480px)
   ============================================================ */

@media (max-width: 480px) {
  #page {
    padding: 0 0.875rem;
  }
}