/*
Theme Name: Sebastian Tutschner
Theme URI: https://example.com/sebastian-tutschner
Author: Sebastian Tutschner
Author URI: https://example.com
Description: Minimalistisches, dunkles Editorial-Theme für Fotografie-Portfolios. One-Pager mit Home, Portfolio und Impressum. Bilder werden bequem über das WordPress-Backend via Custom Post Type "Portfolio" gepflegt – kein HTML-Editieren nötig. Keine externen Schriften oder Tracker, GDPR-freundlich.
Version: 1.0.0
Requires at least: 6.0
Tested up to: 6.6
Requires PHP: 7.4
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: sebastian-tutschner
Tags: portfolio, photography, one-column, dark, custom-logo, custom-menu, featured-images, threaded-comments, translation-ready
*/

/* ============================================================
   1. CSS Custom Properties (Design Tokens)
   ============================================================ */
:root {
  --color-bg: #0a0a0a;
  --color-bg-elev: #111111;
  --color-bg-soft: #161616;
  --color-text: #e9e7e2;
  --color-text-muted: #9a968d;
  --color-text-dim: #6a675f;
  --color-accent: #d9c8a3;
  --color-line: #1f1f1f;
  --color-line-strong: #2a2a2a;
  --color-focus: #d9c8a3;

  --font-serif: "Iowan Old Style", "Apple Garamond", "Baskerville", "Times New Roman", "Droid Serif", Times, "Source Serif Pro", serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --container: 1280px;
  --container-narrow: 760px;

  --gap-xs: 0.5rem;
  --gap-sm: 1rem;
  --gap-md: 1.5rem;
  --gap-lg: 2.5rem;
  --gap-xl: 4rem;
  --gap-2xl: 6rem;

  --transition: 220ms cubic-bezier(0.2, 0.6, 0.2, 1);
  --radius: 2px;
}

/* ============================================================
   2. Reset & Base
   ============================================================ */
*,
*::before,
*::after { box-sizing: border-box; }

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

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

body {
  margin: 0;
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

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

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

button { font: inherit; cursor: pointer; }

/* Headings */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  font-weight: 400;
  letter-spacing: -0.01em;
  line-height: 1.15;
  margin: 0 0 var(--gap-sm);
  color: var(--color-text);
}

h1 { font-size: clamp(2.5rem, 6vw, 5rem); letter-spacing: -0.02em; }
h2 { font-size: clamp(1.75rem, 3.5vw, 2.75rem); }
h3 { font-size: clamp(1.25rem, 2vw, 1.5rem); }

p { margin: 0 0 var(--gap-sm); }

::selection { background: var(--color-accent); color: var(--color-bg); }

/* Accessibility: focus */
:focus { outline: none; }
:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 3px;
}

/* Skip link */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--color-accent);
  color: var(--color-bg);
  padding: 0.75rem 1rem;
  z-index: 10000;
  font-weight: 600;
}
.skip-link:focus {
  left: 1rem;
  top: 1rem;
}

.screen-reader-text {
  border: 0;
  clip: rect(1px, 1px, 1px, 1px);
  -webkit-clip-path: inset(50%);
  clip-path: inset(50%);
  height: 1px;
  margin: -1px;
  overflow: hidden;
  padding: 0;
  position: absolute !important;
  width: 1px;
  word-wrap: normal !important;
}

/* ============================================================
   3. Layout
   ============================================================ */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gap-md);
}
.container--narrow { max-width: var(--container-narrow); }

/* ============================================================
   4. Site Header / Navigation
   ============================================================ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(10, 10, 10, 0.75);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), background-color var(--transition);
}
.site-header.is-scrolled {
  background: rgba(10, 10, 10, 0.92);
  border-bottom-color: var(--color-line);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem var(--gap-md);
  max-width: var(--container);
  margin: 0 auto;
}

.site-branding { display: flex; align-items: center; gap: 0.75rem; }
.site-branding a { display: flex; align-items: center; gap: 0.75rem; }
.site-logo { width: 28px; height: 28px; }
.site-logo path { stroke: var(--color-text); }

.site-title {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 400;
  letter-spacing: 0.02em;
  margin: 0;
}

.site-nav ul {
  display: flex;
  gap: var(--gap-md);
  list-style: none;
  padding: 0;
  margin: 0;
}

.site-nav a {
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  padding: 0.5rem 0;
  position: relative;
}
.site-nav a:hover,
.site-nav a.is-active { color: var(--color-text); }
.site-nav a.is-active::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: var(--color-accent);
}

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--color-line-strong);
  border-radius: var(--radius);
  padding: 0.5rem 0.65rem;
  color: var(--color-text);
}
.nav-toggle svg { width: 18px; height: 18px; }

@media (max-width: 720px) {
  .nav-toggle { display: inline-flex; align-items: center; justify-content: center; }
  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(10, 10, 10, 0.98);
    border-bottom: 1px solid var(--color-line);
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition);
  }
  .site-nav.is-open { max-height: 320px; }
  .site-nav ul {
    flex-direction: column;
    gap: 0;
    padding: var(--gap-sm) var(--gap-md);
  }
  .site-nav li { border-bottom: 1px solid var(--color-line); }
  .site-nav li:last-child { border-bottom: none; }
  .site-nav a { display: block; padding: 1rem 0; }
}

/* ============================================================
   5. Hero
   ============================================================ */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--color-bg);
}

.hero__media {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero__media img,
.hero__media svg {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.55;
}
.hero__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(10,10,10,0.4) 0%, rgba(10,10,10,0.2) 40%, rgba(10,10,10,0.85) 100%);
}

.hero__inner {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: var(--gap-2xl) var(--gap-md);
  max-width: 900px;
}

.hero__eyebrow {
  font-size: 0.8rem;
  letter-spacing: 0.35em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin: 0 0 var(--gap-md);
}

.hero__title {
  font-family: var(--font-serif);
  font-size: clamp(3rem, 9vw, 7rem);
  font-weight: 400;
  line-height: 1;
  letter-spacing: -0.025em;
  margin: 0 0 var(--gap-md);
}

.hero__tagline {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: clamp(1.1rem, 2vw, 1.5rem);
  color: var(--color-text-muted);
  margin: 0 0 var(--gap-lg);
  letter-spacing: 0.02em;
}

.hero__scroll {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  padding: 0.5rem 0;
}
.hero__scroll svg { width: 14px; height: 14px; }
.hero__scroll:hover { color: var(--color-text); }

/* ============================================================
   6. Sections
   ============================================================ */
.section {
  padding: var(--gap-2xl) 0;
  border-top: 1px solid var(--color-line);
}

.section__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--gap-md);
  margin-bottom: var(--gap-xl);
  flex-wrap: wrap;
}

.section__eyebrow {
  font-size: 0.75rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--color-text-dim);
  margin: 0 0 0.75rem;
}

.section__title {
  font-family: var(--font-serif);
  margin: 0;
}

.section__meta {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  letter-spacing: 0.05em;
}

/* ============================================================
   7. Portfolio Grid
   ============================================================ */
.portfolio-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: var(--gap-lg);
}
.portfolio-filter button {
  background: transparent;
  border: 1px solid var(--color-line-strong);
  color: var(--color-text-muted);
  padding: 0.5rem 1rem;
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  border-radius: var(--radius);
  transition: all var(--transition);
}
.portfolio-filter button:hover { color: var(--color-text); border-color: var(--color-text-muted); }
.portfolio-filter button.is-active {
  color: var(--color-bg);
  background: var(--color-accent);
  border-color: var(--color-accent);
}

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--gap-md);
}

.portfolio-item {
  position: relative;
  overflow: hidden;
  background: var(--color-bg-elev);
  grid-column: span 6;
  aspect-ratio: 4 / 3;
  cursor: zoom-in;
  border: 0;
  padding: 0;
  display: block;
  width: 100%;
  text-align: left;
  color: inherit;
  font: inherit;
}

/* Editorial mosaic pattern */
.portfolio-item:nth-child(8n + 1) { grid-column: span 8; aspect-ratio: 16 / 10; }
.portfolio-item:nth-child(8n + 2) { grid-column: span 4; aspect-ratio: 4 / 5; }
.portfolio-item:nth-child(8n + 3) { grid-column: span 4; aspect-ratio: 4 / 5; }
.portfolio-item:nth-child(8n + 4) { grid-column: span 8; aspect-ratio: 16 / 10; }
.portfolio-item:nth-child(8n + 5) { grid-column: span 6; aspect-ratio: 4 / 3; }
.portfolio-item:nth-child(8n + 6) { grid-column: span 6; aspect-ratio: 4 / 3; }
.portfolio-item:nth-child(8n + 7) { grid-column: span 12; aspect-ratio: 21 / 9; }

@media (max-width: 720px) {
  .portfolio-item,
  .portfolio-item:nth-child(8n + 1),
  .portfolio-item:nth-child(8n + 2),
  .portfolio-item:nth-child(8n + 3),
  .portfolio-item:nth-child(8n + 4),
  .portfolio-item:nth-child(8n + 5),
  .portfolio-item:nth-child(8n + 6),
  .portfolio-item:nth-child(8n + 7) {
    grid-column: span 12;
    aspect-ratio: 4 / 3;
  }
}

.portfolio-item img,
.portfolio-item svg {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 600ms cubic-bezier(0.2, 0.6, 0.2, 1), opacity var(--transition);
}
.portfolio-item:hover img,
.portfolio-item:hover svg { transform: scale(1.04); }

.portfolio-item__caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: var(--gap-md);
  background: linear-gradient(180deg, rgba(10,10,10,0) 0%, rgba(10,10,10,0.85) 100%);
  color: var(--color-text);
  opacity: 0;
  transform: translateY(8px);
  transition: opacity var(--transition), transform var(--transition);
}
.portfolio-item:hover .portfolio-item__caption,
.portfolio-item:focus-visible .portfolio-item__caption {
  opacity: 1;
  transform: translateY(0);
}

.portfolio-item__title {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  margin: 0 0 0.25rem;
}
.portfolio-item__cat {
  font-size: 0.7rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.portfolio-empty {
  border: 1px dashed var(--color-line-strong);
  padding: var(--gap-xl);
  text-align: center;
  color: var(--color-text-muted);
}
.portfolio-empty code {
  background: var(--color-bg-elev);
  padding: 0.15rem 0.4rem;
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 0.85em;
}

.is-hidden { display: none !important; }

/* ============================================================
   8. Impressum / Legal section
   ============================================================ */
.impressum-section .container { max-width: var(--container-narrow); }

.impressum-block {
  margin-bottom: var(--gap-lg);
}
.impressum-block h3 {
  font-size: 0.8rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--color-text-dim);
  font-family: var(--font-sans);
  font-weight: 600;
  margin: 0 0 var(--gap-sm);
}
.impressum-block p,
.impressum-block address {
  font-style: normal;
  color: var(--color-text-muted);
  line-height: 1.7;
}
.impressum-block a { color: var(--color-text); border-bottom: 1px solid var(--color-line-strong); }
.impressum-block a:hover { border-color: var(--color-accent); color: var(--color-accent); }

/* ============================================================
   9. Footer
   ============================================================ */
.site-footer {
  border-top: 1px solid var(--color-line);
  padding: var(--gap-lg) 0;
  text-align: center;
  color: var(--color-text-dim);
  font-size: 0.85rem;
}
.site-footer__inner {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  align-items: center;
}
.site-footer a:hover { color: var(--color-accent); }

/* ============================================================
   10. Lightbox
   ============================================================ */
.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.96);
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: var(--gap-md);
}
.lightbox.is-open { display: flex; }
.lightbox__content {
  position: relative;
  max-width: 95vw;
  max-height: 90vh;
}
.lightbox__content img,
.lightbox__content svg {
  max-width: 95vw;
  max-height: 80vh;
  object-fit: contain;
}
.lightbox__caption {
  margin-top: 1rem;
  text-align: center;
  color: var(--color-text-muted);
  font-family: var(--font-serif);
  font-style: italic;
}
.lightbox__close,
.lightbox__prev,
.lightbox__next {
  position: absolute;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.15);
  color: var(--color-text);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}
.lightbox__close:hover,
.lightbox__prev:hover,
.lightbox__next:hover { background: rgba(255,255,255,0.12); border-color: var(--color-accent); color: var(--color-accent); }
.lightbox__close { top: 1.5rem; right: 1.5rem; }
.lightbox__prev { left: 1.5rem; top: 50%; transform: translateY(-50%); }
.lightbox__next { right: 1.5rem; top: 50%; transform: translateY(-50%); }
.lightbox__close svg,
.lightbox__prev svg,
.lightbox__next svg { width: 18px; height: 18px; }

@media (max-width: 600px) {
  .lightbox__prev { left: 0.5rem; }
  .lightbox__next { right: 0.5rem; }
}

/* ============================================================
   11. Reveal-on-scroll
   ============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 700ms ease, transform 700ms ease;
}
.reveal.is-visible { opacity: 1; transform: none; }

/* ============================================================
   12. WP core classes (basic support)
   ============================================================ */
.alignleft { float: left; margin-right: 1.5em; }
.alignright { float: right; margin-left: 1.5em; }
.aligncenter { display: block; margin-left: auto; margin-right: auto; }
.wp-caption-text { color: var(--color-text-muted); font-size: 0.85em; }

/* ============================================================
   13. Print
   ============================================================ */
@media print {
  .site-header, .site-footer, .nav-toggle, .portfolio-filter, .hero__scroll { display: none; }
  body { background: #fff; color: #000; }
}

/* ============================================================
   14. Portfolio – natives Grid
   ============================================================ */

/* Filter-Nav */
.portfolio-filter {
    display: flex;
    flex-wrap: wrap;
    gap: var(--gap-sm);
    padding: 0 0 var(--gap-lg);
    list-style: none;
    margin: 0;
}
.portfolio-filter__btn {
    background: transparent;
    border: 1px solid var(--color-line-strong);
    color: var(--color-text-muted);
    padding: 0.4rem 1.1rem;
    font-size: 0.78rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    cursor: pointer;
    border-radius: var(--radius);
    transition: all var(--transition);
    font-family: var(--font-sans);
}
.portfolio-filter__btn:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
}
.portfolio-filter__btn.is-active {
    background: var(--color-accent);
    border-color: var(--color-accent);
    color: #0a0a0a;
}

/* Grid – Masonry-Spalten (CSS columns), Originalproportionen bleiben erhalten */
.portfolio-grid {
    columns: 2;
    column-gap: 16px;
    width: 100%;
}

/* Einzelne Kachel */
.portfolio-item {
    break-inside: avoid;       /* kein Umbruch mitten in einer Kachel */
    display: block;
    position: relative;
    overflow: hidden;
    margin: 0 0 16px;
    background: var(--color-bg-elev);
}
.portfolio-item__img-wrap {
    display: block;
    width: 100%;
}
.portfolio-item__img {
    display: block;
    width: 100%;
    height: auto;              /* ← Originalproportionen: kein Zuschnitt */
    transition: transform 600ms cubic-bezier(0.2,0.6,0.2,1);
}
.portfolio-item:hover .portfolio-item__img {
    transform: scale(1.03);
}

/* Caption (optional, eingeblendet beim Hover) */
.portfolio-item__caption {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: var(--gap-md);
    background: linear-gradient(to top, rgba(0,0,0,0.55) 0%, transparent 100%);
    opacity: 0;
    transition: opacity var(--transition);
}
.portfolio-item:hover .portfolio-item__caption {
    opacity: 1;
}
.portfolio-item__caption p {
    margin: 0;
    color: #fff;
    font-size: 0.85rem;
    line-height: 1.4;
}

/* Transparenter Link-Overlay */
.portfolio-item__link {
    position: absolute;
    inset: 0;
    z-index: 2;
}

/* Responsive */
@media (max-width: 500px) {
    .portfolio-grid {
        columns: 1;
    }
}

/* ========================================================
   15. Korrekturen – alte Grid-Regeln (Sektion 7) überschreiben
   Hochformat-Bilder sollen ihre Originalproportion behalten.
   ======================================================== */

/* Sektion-7-Reste: display:grid und aspect-ratio deaktivieren */
#portfolio-grid,
.portfolio-grid {
    display: block !important; /* columns:2 aus Sektion 14 wird von block nicht beeinflusst, da columns ein Spalten-Eigenschaft ist */
}

/* Wichtig: aspect-ratio auf portfolio-item komplett entfernen */
.portfolio-item,
.portfolio-item:nth-child(n) {
    aspect-ratio: unset !important;
    height: auto !important;
}

/* .portfolio-item img/svg: height auto statt 100% – kein Zuschnitt */
.portfolio-item img,
.portfolio-item svg,
.portfolio-item__img {
    width: 100% !important;
    height: auto !important;
    object-fit: unset !important;
}

/* Portfolio-Item: Hintergrund entfernen – kein schwarzes Rechteck beim Laden */
.portfolio-item {
    background: transparent !important;
}

/* ========================================================
   16. Portfolio – 2-Spalten Flexbox-Masonry
   portfolio-grid = flex-container mit linker + rechter Spalte
   portfolio-col  = flex-Spalte, Bilder stapeln sich nahtlos
   ======================================================== */

#portfolio-grid,
.portfolio-grid {
    display: flex !important;
    flex-direction: row !important;
    align-items: flex-start !important;
    gap: 16px !important;
    padding: 0 !important;
    /* columns/grid aus früheren Sektionen deaktivieren */
    columns: unset !important;
    grid-template-columns: unset !important;
}

.portfolio-col {
    flex: 1 1 0;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

/* Mobile: Spalten untereinander */
@media (max-width: 500px) {
    #portfolio-grid,
    .portfolio-grid {
        flex-direction: column !important;
    }
    .portfolio-col {
        flex: none;
        width: 100%;
    }
}

/* Portfolio-Grid volle Breite */
#portfolio-grid,
.portfolio-grid {
    width: 100% !important;
    box-sizing: border-box !important;
}