/* ============================================================
   PORTFOLIO.CSS — Portfolio overview + case study styles + print
   mathisthomsen.de
   ============================================================ */

/* ── Top bar ─────────────────────────────────────────────────── */
/* Mirrors .cv-topbar exactly — same sticky header pattern */

.portfolio-topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-3) var(--container-pad);
  background-color: rgba(8, 8, 8, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border-subtle);
}

.portfolio-topbar__back {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--color-text-secondary);
  transition: color var(--duration-fast);
}

.portfolio-topbar__back:hover {
  color: var(--color-accent);
}

/* Language toggle — identical to .cv-lang-toggle */
.portfolio-topbar__lang {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.portfolio-topbar__lang-sep {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
}

.portfolio-topbar__lang-btn {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--color-text-secondary);
  padding: var(--space-1) var(--space-2);
  border: 1px solid transparent;
  transition:
    color var(--duration-fast),
    border-color var(--duration-fast);
}

.portfolio-topbar__lang-btn[aria-pressed="true"] {
  color: var(--color-accent);
  border-color: var(--color-accent-dim);
}

.portfolio-topbar__lang-btn:hover {
  color: var(--color-text-primary);
}

/* ── Portfolio overview: header ──────────────────────────────── */

.portfolio-main {
  min-height: calc(100dvh - 3.5rem);
}

.portfolio-header {
  padding: var(--space-16) 0 var(--space-12);
}

.portfolio-header__inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.portfolio-header__label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--color-text-tertiary);
}

.portfolio-header__title {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 700;
  letter-spacing: var(--tracking-tight);
  line-height: var(--leading-snug);
  color: var(--color-text-primary);
}

.portfolio-header__sub {
  font-size: var(--text-base);
  line-height: var(--leading-base);
  color: var(--color-text-secondary);
  max-width: 48ch;
}

/* ── Portfolio grid ──────────────────────────────────────────── */

.portfolio-grid {
  padding-bottom: var(--space-24);
}

.portfolio-grid__list {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

@media (min-width: 48rem) {
  .portfolio-grid__list {
    grid-template-columns: 1fr 1fr;
  }
}

/* ── Project card ────────────────────────────────────────────── */

.portfolio-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  padding: var(--space-8);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  text-decoration: none;
  transition:
    border-color var(--duration-base) var(--ease-out),
    transform var(--duration-base) var(--ease-out);
}

.portfolio-card:hover {
  border-color: var(--color-accent-dim);
  transform: translateY(-2px);
}

/* Type B visual distinction: faint lock mark in corner */
.portfolio-card--confidential {
  position: relative;
}

.portfolio-card--confidential::after {
  content: '';
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--color-text-tertiary);
}

.portfolio-card__meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.portfolio-card__year {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-wide);
  color: var(--color-accent);
}

.portfolio-card__type {
  font-family: var(--font-mono);
  font-size: var(--text-2xs);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--color-text-tertiary);
}

.portfolio-card__title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 600;
  letter-spacing: var(--tracking-tight);
  line-height: var(--leading-snug);
  color: var(--color-text-primary);
}

.portfolio-card__teaser {
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  color: var(--color-text-secondary);
  flex: 1;
}

.portfolio-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  list-style: none;
}

.portfolio-card__tag {
  font-family: var(--font-mono);
  font-size: var(--text-2xs);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
}

.portfolio-card__cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--color-text-secondary);
  margin-top: auto;
}

.portfolio-card:hover .portfolio-card__cta {
  color: var(--color-accent);
}

.portfolio-card__cta-arrow {
  transition: transform var(--duration-fast) var(--ease-out);
}

.portfolio-card:hover .portfolio-card__cta-arrow {
  transform: translateX(3px);
}

/* Tag filter (hidden until > 4 projects) */
.portfolio-filter {
  display: none;
  gap: var(--space-2);
  flex-wrap: wrap;
  margin-bottom: var(--space-8);
}

.portfolio-filter--visible {
  display: flex;
}

.portfolio-filter__btn {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
  padding: var(--space-2) var(--space-4);
  transition:
    color var(--duration-fast),
    border-color var(--duration-fast);
}

.portfolio-filter__btn:hover,
.portfolio-filter__btn[aria-pressed="true"] {
  color: var(--color-accent);
  border-color: var(--color-accent-dim);
}

/* ── Case study: shared layout ───────────────────────────────── */

.case-study-main {
  min-height: calc(100dvh - 3.5rem);
}

/* ── Case study: project header ──────────────────────────────── */

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

.case-study-header__inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.case-study-header__label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--color-text-tertiary);
}

.case-study-header__title {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 700;
  letter-spacing: var(--tracking-tight);
  line-height: var(--leading-snug);
  color: var(--color-text-primary);
  max-width: 22ch;
}

.case-study-header__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-6);
}

.case-study-header__meta-item {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.case-study-header__meta-label {
  font-family: var(--font-mono);
  font-size: var(--text-2xs);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--color-text-tertiary);
}

.case-study-header__meta-value {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

.case-study-header__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  list-style: none;
}

.case-study-header__tag {
  font-family: var(--font-mono);
  font-size: var(--text-2xs);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
}

/* ── Case study: content body ────────────────────────────────── */

.case-study-body {
  padding: var(--space-16) 0 var(--space-24);
}

/* Each block gets consistent vertical rhythm */
.case-study__block {
  margin-bottom: var(--space-16);
}

.case-study__block:last-child {
  margin-bottom: 0;
}

/* ── Content block: stat bar ─────────────────────────────────── */

.cs-stat-bar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-8) var(--space-12);
  padding: var(--space-8) 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.cs-stat {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.cs-stat__value {
  font-family: var(--font-display);
  font-size: var(--text-4xl);
  font-weight: 700;
  letter-spacing: var(--tracking-tight);
  line-height: 1;
  color: var(--color-text-primary);
}

.cs-stat__label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--color-text-secondary);
}

/* ── Content block: text ─────────────────────────────────────── */

.cs-text {
  font-size: var(--text-lg);
  line-height: var(--leading-relaxed);
  color: var(--color-text-secondary);
  max-width: 65ch;
}

/* ── Content block: process timeline ────────────────────────── */

.cs-timeline {
  display: flex;
  flex-direction: column;
  gap: 0;
  border-left: 1px solid var(--color-border);
  padding-left: var(--space-8);
  margin-left: var(--space-2);
}

.cs-timeline__phase-entry {
  position: relative;
  padding-bottom: var(--space-8);
}

.cs-timeline__phase-entry:last-child {
  padding-bottom: 0;
}

/* Dot on timeline */
.cs-timeline__phase-entry::before {
  content: '';
  position: absolute;
  left: calc(-1 * var(--space-8) - 3px);
  top: 0.3em;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  border: 1px solid var(--color-accent);
  background-color: var(--color-bg);
}

.cs-timeline__phase-num {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-1);
}

.cs-timeline__phase-title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
}

.cs-timeline__phase-desc {
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  color: var(--color-text-secondary);
}

/* Section label above timeline */
.cs-section-label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--color-text-tertiary);
  margin-bottom: var(--space-6);
}

.cs-section-label::before {
  content: '// ';
  color: var(--color-text-tertiary);
}

/* ── Content block: method grid ──────────────────────────────── */

.cs-method-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

@media (min-width: 36rem) {
  .cs-method-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.cs-method {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  padding: var(--space-6);
  background-color: var(--color-surface-2);
  border: 1px solid var(--color-border);
}

.cs-method__icon {
  width: 24px;
  height: 24px;
  color: var(--color-accent);
  flex-shrink: 0;
}

.cs-method__title {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-text-primary);
}

.cs-method__desc {
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  color: var(--color-text-secondary);
}

/* ── Content block: insight ──────────────────────────────────── */

.cs-insight {
  padding: var(--space-6) var(--space-8);
  border-left: 2px solid var(--color-accent);
  background-color: var(--color-surface);
}

.cs-insight__text {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-style: italic;
  line-height: var(--leading-snug);
  color: var(--color-text-primary);
}

/* ── Content block: challenge / approach / outcome ───────────── */

.cs-outcome {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
}

.cs-outcome__item {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.cs-outcome__label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--color-text-tertiary);
}

.cs-outcome__label::before {
  content: '// ';
}

.cs-outcome__text {
  font-size: var(--text-base);
  line-height: var(--leading-relaxed);
  color: var(--color-text-secondary);
  max-width: 65ch;
}

/* ── Content block: confidential disclaimer ──────────────────── */

.cs-disclaimer {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  padding: var(--space-6) var(--space-8);
  background-color: var(--color-surface-2);
  border: 1px solid var(--color-accent-dim);
  border-left-width: 2px;
}

.cs-disclaimer__label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--color-accent);
}

.cs-disclaimer__text {
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  color: var(--color-text-secondary);
}

/* ── WIP indicator ───────────────────────────────────────────── */

/* Card: accent-colored type label for WIP projects */
.portfolio-card__type--wip {
  color: var(--color-accent);
}

/* Case study header: pill badge between label and title */
.case-study-header__wip-badge {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: var(--text-2xs);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--color-accent);
  border: 1px solid var(--color-accent-dim);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-sm);
}

/* ── Content block: visual slots ─────────────────────────────── */

.cs-visual-slots {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

@media (min-width: 36rem) {
  .cs-visual-slots {
    grid-template-columns: 1fr 1fr;
  }
}

.cs-visual-slot {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.cs-visual-slot__area {
  aspect-ratio: 16 / 10;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  background-color: var(--color-surface);
  border: 1px dashed var(--color-border);
}

.cs-visual-slot__icon {
  color: var(--color-text-tertiary);
  opacity: 0.5;
  flex-shrink: 0;
}

.cs-visual-slot__caption {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-wide);
  color: var(--color-text-tertiary);
  text-align: center;
}

/* ── Content block: key takeaways ────────────────────────────── */

.cs-key-takeaways {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

@media (min-width: 36rem) {
  .cs-key-takeaways {
    grid-template-columns: 1fr 1fr;
  }
}

.cs-key-takeaway {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-6);
  background-color: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-top: 2px solid var(--color-accent-dim);
}

.cs-key-takeaway__title {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-text-primary);
}

.cs-key-takeaway__desc {
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  color: var(--color-text-secondary);
}

/* ── WIP timeline entry ──────────────────────────────────────── */

/* Filled dot for WIP phases (vs. outlined dot for complete phases) */
.cs-timeline__phase-entry--wip::before {
  background-color: var(--color-accent);
  border-color: var(--color-accent);
}

/* Inline badge below phase label, above title */
.cs-timeline__phase-wip-badge {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: var(--text-2xs);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--color-accent);
  border: 1px solid var(--color-accent-dim);
  padding: 0 var(--space-2);
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-3);
}

/* ── Case study header: external URL link ────────────────────── */

.case-study-header__url {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-wide);
  color: var(--color-text-tertiary);
  text-decoration: none;
  transition: color var(--duration-fast);
}

.case-study-header__url:hover {
  color: var(--color-accent);
}

/* ── Scroll reveal (shared with CV animations) ───────────────── */

@media (prefers-reduced-motion: no-preference) {
  [data-reveal] {
    opacity: 0;
    transform: translateY(20px);
    transition:
      opacity var(--duration-slow) var(--ease-out),
      transform var(--duration-slow) var(--ease-out);
  }

  [data-reveal].is-visible {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ── Print styles ────────────────────────────────────────────── */

@media print {
  /* Remap to light theme — same pattern as cv.css */
  :root {
    --color-bg:            #ffffff;
    --color-surface:       #f8f7f5;
    --color-surface-2:     #f0ede8;
    --color-border:        #d8d4ce;
    --color-border-subtle: #e8e4de;
    --color-text-primary:  #0a0a0a;
    --color-text-secondary:#4a4a44;
    --color-text-tertiary: #8a8a82;
    --color-accent:        #6b5c3e;
    --color-accent-dim:    #c8b99a;
  }

  @page {
    size: A4;
    margin: 15mm 15mm 15mm 15mm;
  }

  * {
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }

  .portfolio-topbar,
  .case-study-topbar,
  .skip-link,
  .site-footer,
  body::before {
    display: none !important;
  }

  /* Force all reveals visible */
  [data-reveal] {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }

  .portfolio-card {
    break-inside: avoid;
  }

  .case-study__block {
    break-inside: avoid;
  }
}