/* Aariv's Web Studio — Tactile Swiss Editorial & Accessibility Workbench */
:root {
  --bg: #f6f3ec;
  --surface: #fffdf9;
  --surface-alt: #ede8dd;
  --ink: #161514;
  --ink-muted: #4a4742;
  --line: #cfc8b8;
  --line-strong: #161514;
  --accent: #9e3b24;
  --accent-ink: #ffffff;
  --good: #184532;
  --good-bg: #e6f2ec;
  --warn-bg: #fdf0d5;
  --warn-ink: #4a2c00;
  --mono: "SF Mono", ui-monospace, Menlo, Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --serif: "Iowan Old Style", "Palatino Linotype", Baskerville, Georgia, serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--ink);
  text-decoration-thickness: 1.5px;
  text-underline-offset: 3px;
}
a:hover, a:focus-visible {
  color: var(--accent);
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 8px;
  background: var(--ink);
  color: var(--surface);
  padding: 10px 16px;
  font-family: var(--mono);
  font-size: 13px;
  z-index: 100;
}
.skip-link:focus { left: 12px; }

.shell {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 20px 64px;
}

/* Top Studio Masthead */
.masthead {
  border-bottom: 2px solid var(--line-strong);
  padding: 18px 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}
.brand {
  display: flex;
  align-items: baseline;
  gap: 12px;
  text-decoration: none;
}
.brand-mark {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: var(--ink);
  color: var(--surface);
  padding: 4px 8px;
}
.brand-name {
  font-family: var(--serif);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.01em;
}
.masthead-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  font-family: var(--mono);
  font-size: 13px;
}
.masthead-nav a {
  text-decoration: none;
  padding: 6px 0;
  border-bottom: 2px solid transparent;
}
.masthead-nav a:hover, .masthead-nav a[aria-current="page"] {
  border-bottom-color: var(--accent);
  color: var(--accent);
}

/* Editorial Hero */
.hero {
  padding: 40px 0 32px;
  border-bottom: 1px solid var(--line);
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}
@media (min-width: 860px) {
  .hero {
    grid-template-columns: 7fr 5fr;
    align-items: end;
  }
}
.eyebrow {
  font-family: var(--mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: var(--accent);
  font-weight: 700;
  margin-bottom: 10px;
}
.hero h1 {
  font-family: var(--serif);
  font-size: clamp(2.1rem, 4.2vw, 3.35rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}
.hero-lead {
  font-size: 17px;
  color: var(--ink-muted);
  max-width: 66ch;
}
.hero-aside {
  background: var(--surface);
  border: 1.5px solid var(--line-strong);
  padding: 18px 20px;
  box-shadow: 4px 4px 0 var(--line-strong);
}
.hero-aside-title {
  font-family: var(--mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 8px;
  font-weight: 700;
}
.hero-aside p {
  font-size: 14px;
  color: var(--ink-muted);
  margin-bottom: 10px;
}
.privacy-pill {
  display: inline-block;
  font-family: var(--mono);
  font-size: 11.5px;
  background: var(--warn-bg);
  color: var(--warn-ink);
  border: 1px solid var(--warn-ink);
  padding: 4px 8px;
  font-weight: 600;
}

/* Studio Standards Bar */
.standards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  border-bottom: 2px solid var(--line-strong);
  background: var(--surface);
}
.standard-cell {
  padding: 18px 20px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.standard-cell:last-child { border-right: none; }
.standard-label {
  font-family: var(--mono);
  font-size: 11.5px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-muted);
}
.standard-value {
  font-family: var(--mono);
  font-size: 20px;
  font-weight: 700;
  margin: 4px 0;
  color: var(--ink);
}
.standard-detail {
  font-size: 13px;
  color: var(--ink-muted);
}

/* Section Headers */
.section-head {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: flex-end;
  gap: 12px;
  padding: 36px 0 18px;
  border-bottom: 2px solid var(--line-strong);
  margin-bottom: 24px;
}
.section-head h2 {
  font-family: var(--serif);
  font-size: clamp(1.55rem, 2.8vw, 2.15rem);
  line-height: 1.15;
}
.section-meta {
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--ink-muted);
}

/* Filter Controls */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 22px;
  align-items: center;
}
.filter-btn {
  font-family: var(--mono);
  font-size: 12.5px;
  padding: 8px 14px;
  min-height: 40px;
  border: 1.5px solid var(--line-strong);
  background: var(--surface);
  color: var(--ink);
  cursor: pointer;
  transition: transform 0.1s ease, background 0.15s ease;
}
.filter-btn:hover {
  background: var(--surface-alt);
}
.filter-btn[aria-pressed="true"] {
  background: var(--ink);
  color: var(--surface);
  font-weight: 700;
}

/* Case Study Grid */
.case-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}
@media (min-width: 840px) {
  .case-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
.case-card {
  background: var(--surface);
  border: 1.5px solid var(--line-strong);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: 5px 5px 0 var(--line-strong);
}
.case-card[hidden] { display: none; }
.case-card-top {
  padding: 18px 20px 14px;
  border-bottom: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 10px;
}
.case-index {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 700;
  background: var(--surface-alt);
  padding: 3px 8px;
  border: 1px solid var(--line-strong);
}
.case-kind {
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--ink-muted);
}
.case-thumb-wrap {
  position: relative;
  border-bottom: 1px solid var(--line);
  background: #e9e4d8;
  overflow: hidden;
  aspect-ratio: 16 / 10;
}
.case-thumb-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  display: block;
}
.case-body {
  padding: 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.case-body h3 {
  font-family: var(--serif);
  font-size: 23px;
  line-height: 1.2;
}
.case-body h3 a {
  text-decoration: none;
}
.case-body h3 a:hover {
  text-decoration: underline;
  color: var(--accent);
}
.case-summary {
  font-size: 15px;
  color: var(--ink-muted);
}
.swatches-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 4px;
}
.swatch-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--mono);
  font-size: 11.5px;
  padding: 3px 8px;
  border: 1px solid var(--line);
  background: var(--bg);
}
.swatch-dot {
  width: 12px;
  height: 12px;
  border: 1px solid var(--ink);
  display: inline-block;
}
.case-metrics-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line);
  background: var(--bg);
  font-family: var(--mono);
  font-size: 12px;
}
.metric-cell {
  padding: 10px 12px;
  border-right: 1px solid var(--line);
}
.metric-cell:last-child { border-right: none; }
.metric-cell span {
  display: block;
  font-size: 10.5px;
  color: var(--ink-muted);
  text-transform: uppercase;
}
.metric-cell strong {
  font-size: 13.5px;
  color: var(--ink);
}
.case-footer {
  padding: 14px 20px;
  border-top: 1.5px solid var(--line-strong);
  background: var(--surface);
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.btn-spec {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
  background: var(--ink);
  color: var(--surface);
  padding: 10px 16px;
  min-height: 44px;
}
.btn-spec:hover, .btn-spec:focus-visible {
  background: var(--accent);
  color: var(--accent-ink);
}

/* Interactive Workbench Panels */
.workbench-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}
@media (min-width: 920px) {
  .workbench-grid {
    grid-template-columns: 1fr 1fr;
  }
}
.panel {
  background: var(--surface);
  border: 1.5px solid var(--line-strong);
  padding: 22px;
  box-shadow: 4px 4px 0 var(--line-strong);
}
.panel h3 {
  font-family: var(--serif);
  font-size: 20px;
  margin-bottom: 6px;
}
.panel-sub {
  font-size: 14px;
  color: var(--ink-muted);
  margin-bottom: 16px;
}
.control-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 14px;
}
.field-label {
  display: block;
  font-family: var(--mono);
  font-size: 11.5px;
  text-transform: uppercase;
  margin-bottom: 6px;
  color: var(--ink-muted);
}
.color-input-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
  border: 1.5px solid var(--line-strong);
  padding: 6px 10px;
  background: var(--bg);
}
.color-input-wrap input[type="color"] {
  width: 32px;
  height: 28px;
  border: none;
  background: none;
  cursor: pointer;
}
.color-input-wrap input[type="text"] {
  font-family: var(--mono);
  font-size: 13.5px;
  border: none;
  background: transparent;
  color: var(--ink);
  width: 100%;
}
.preset-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 16px;
}
.preset-btn {
  font-family: var(--mono);
  font-size: 11.5px;
  padding: 6px 10px;
  border: 1px solid var(--line-strong);
  background: var(--bg);
  color: var(--ink);
  cursor: pointer;
}
.preset-btn:hover { background: var(--surface-alt); }

.contrast-preview {
  border: 1.5px solid var(--line-strong);
  padding: 18px;
  margin-bottom: 14px;
  transition: background 0.15s ease, color 0.15s ease;
}
.contrast-preview-title {
  font-family: var(--serif);
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 6px;
}
.contrast-preview-body {
  font-size: 15px;
}
.badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  font-family: var(--mono);
  font-size: 12.5px;
}
.wcag-badge {
  padding: 4px 10px;
  border: 1px solid var(--line-strong);
  font-weight: 700;
}
.wcag-pass {
  background: var(--good-bg);
  color: var(--good);
  border-color: var(--good);
}
.wcag-fail {
  background: #fde8e8;
  color: #7d1a1a;
  border-color: #7d1a1a;
}

/* Viewport & Audit Table */
.viewport-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 14px;
  flex-wrap: wrap;
}
.vp-tab {
  font-family: var(--mono);
  font-size: 12px;
  padding: 7px 12px;
  border: 1.5px solid var(--line-strong);
  background: var(--bg);
  cursor: pointer;
}
.vp-tab[aria-selected="true"] {
  background: var(--ink);
  color: var(--surface);
  font-weight: 700;
}
.vp-readout {
  background: var(--bg);
  border: 1px solid var(--line);
  padding: 14px;
  font-family: var(--mono);
  font-size: 12.5px;
  margin-bottom: 14px;
}
.vp-readout dt {
  color: var(--ink-muted);
  font-size: 11px;
  text-transform: uppercase;
  margin-top: 8px;
}
.vp-readout dt:first-child { margin-top: 0; }
.vp-readout dd {
  color: var(--ink);
  font-weight: 600;
  margin-top: 2px;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  background: var(--surface);
  border: 1.5px solid var(--line-strong);
}
.data-table th, .data-table td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
  text-align: left;
}
.data-table th {
  font-family: var(--mono);
  font-size: 11.5px;
  text-transform: uppercase;
  background: var(--surface-alt);
  border-bottom: 1.5px solid var(--line-strong);
}
.data-table td.num {
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
}

/* Case Study Detail Page */
.breadcrumb {
  font-family: var(--mono);
  font-size: 12.5px;
  padding: 18px 0 0;
  color: var(--ink-muted);
}
.case-detail-hero {
  padding: 22px 0 28px;
  border-bottom: 2px solid var(--line-strong);
}
.case-detail-hero h1 {
  font-family: var(--serif);
  font-size: clamp(2rem, 4vw, 3.1rem);
  line-height: 1.12;
  margin: 8px 0 12px;
}
.showcase-frame {
  margin: 28px 0;
  background: var(--surface);
  border: 1.5px solid var(--line-strong);
  box-shadow: 6px 6px 0 var(--line-strong);
  overflow: hidden;
}
.showcase-bar {
  padding: 10px 16px;
  background: var(--surface-alt);
  border-bottom: 1.5px solid var(--line-strong);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  font-family: var(--mono);
  font-size: 12px;
}
.showcase-stage {
  position: relative;
  background: #e5dfd3;
  transition: max-width 0.25s ease;
  margin: 0 auto;
}
.showcase-stage img {
  width: 100%;
  height: auto;
  display: block;
}
.grid-overlay {
  position: absolute;
  inset: 0;
  pointer-events: none;
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 12px;
  padding: 0 16px;
  opacity: 0;
  transition: opacity 0.2s ease;
}
.grid-overlay.active { opacity: 1; }
.grid-col {
  background: rgba(158, 59, 36, 0.14);
  border-left: 1px dashed rgba(158, 59, 36, 0.45);
  border-right: 1px dashed rgba(158, 59, 36, 0.45);
}

.notes-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  margin: 28px 0;
}
@media (min-width: 860px) {
  .notes-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}
.note-card {
  background: var(--surface);
  border: 1.5px solid var(--line-strong);
  padding: 20px;
}
.note-card h2 {
  font-family: var(--serif);
  font-size: 20px;
  margin-bottom: 10px;
}
.note-card p, .note-card li {
  font-size: 15px;
  color: var(--ink-muted);
}
.note-card ul {
  padding-left: 18px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 18px;
}
.tool-card {
  background: var(--surface);
  border: 1.5px solid var(--line-strong);
  padding: 18px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 10px;
}
.tool-stack {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 700;
}
.tool-card h3 {
  font-family: var(--serif);
  font-size: 19px;
}
.tool-card p {
  font-size: 14px;
  color: var(--ink-muted);
}

.site-footer {
  margin-top: 56px;
  padding-top: 24px;
  border-top: 2px solid var(--line-strong);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 16px;
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--ink-muted);
}