/*
Theme Name: AI Engine Stack
Theme URI: https://aienginestack.com
Author: AI Engine Stack
Author URI: https://aienginestack.com
Description: Premium dark-mode B2B theme for AI Engine Stack — an elite enterprise AI & RPA engineering consultancy. Minimalist, futuristic, corporate aesthetic with deep charcoal palette and electric blue / neon mint accents.
Version: 1.2.0
Requires at least: 6.0
Tested up to: 6.5
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: aienginestack
Tags: business, dark-mode, custom-colors, custom-menu, one-column, three-columns
*/

:root {
  --bg: #0A0E13;
  --bg-elev: #10161E;
  --surface: #141B24;
  --border: #1E2731;
  --border-strong: #2A3543;
  --text: #E6EDF3;
  --text-muted: #8B9AAB;
  --text-dim: #5C6B7A;
  --accent-blue: #2BD4FF;
  --accent-blue-strong: #00B8E6;
  --accent-mint: #4DFFB8;
  --accent-mint-strong: #00E69E;
  --danger: #FF5A5A;

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', Menlo, monospace;

  --max-width: 1240px;
  --gutter: clamp(20px, 4vw, 48px);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--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 { max-width: 100%; height: auto; display: block; }
a { color: var(--accent-blue); text-decoration: none; transition: color .15s ease; }
a:hover { color: var(--accent-mint); }

h1, h2, h3, h4 {
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin: 0 0 0.5em;
  color: var(--text);
}

h1 { font-size: clamp(2.4rem, 5vw, 4rem); }
h2 { font-size: clamp(1.8rem, 3.2vw, 2.6rem); }
h3 { font-size: 1.25rem; }

p { margin: 0 0 1em; color: var(--text-muted); }

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

/* Accessibility */
.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;
}
.skip-link:focus {
  background: var(--accent-mint);
  color: var(--bg);
  clip: auto;
  -webkit-clip-path: none;
  clip-path: none;
  height: auto;
  padding: 12px 18px;
  position: absolute;
  left: 12px; top: 12px;
  text-decoration: none;
  width: auto;
  z-index: 1000;
}

/* === Header === */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 14, 19, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.site-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: 72px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
}
.brand:hover { color: var(--text); }
.brand-mark {
  width: 28px; height: 28px;
  display: grid; place-items: center;
  border: 1px solid var(--accent-blue);
  color: var(--accent-blue);
}
.brand-logo {
  display: block;
  height: 28px;
  width: auto;
}
.nav-primary { display: flex; gap: 26px; }
.nav-primary a {
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 500;
}
.nav-primary a:hover { color: var(--text); }
.nav-cta {
  color: var(--bg) !important;
  background: var(--accent-mint);
  padding: 10px 18px;
  font-weight: 600;
  font-size: 0.85rem;
  transition: background .15s ease;
  white-space: nowrap;
}
.nav-cta:hover { background: var(--accent-mint-strong); color: var(--bg) !important; }

.nav-toggle {
  display: none;
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border-strong);
  width: 40px; height: 40px;
  cursor: pointer;
  align-items: center; justify-content: center;
}

@media (max-width: 1020px) {
  .nav-primary, .nav-cta { display: none; }
  .nav-toggle { display: inline-flex; }
  .site-header.nav-open .nav-primary,
  .site-header.nav-open .nav-cta {
    display: flex;
    position: absolute;
    top: 72px; left: 0; right: 0;
    flex-direction: column;
    gap: 0;
    padding: 8px var(--gutter) 16px;
    background: var(--bg-elev);
    border-bottom: 1px solid var(--border);
  }
  .site-header.nav-open .nav-primary a,
  .site-header.nav-open .nav-cta {
    padding: 16px 0;
    border-bottom: 1px solid var(--border);
    text-align: left;
  }
}

/* === Buttons === */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 16px 28px;
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.01em;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all .18s ease;
  font-family: var(--font-sans);
}
.btn-primary {
  background: var(--accent-blue);
  color: var(--bg);
}
.btn-primary:hover {
  background: var(--accent-mint);
  color: var(--bg);
  transform: translateY(-1px);
}
.btn-ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--border-strong);
}
.btn-ghost:hover {
  border-color: var(--accent-blue);
  color: var(--accent-blue);
}

/* === Section base === */
section {
  padding: clamp(72px, 10vw, 128px) 0;
  position: relative;
}
.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent-mint);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  margin-bottom: 18px;
}
.section-eyebrow::before {
  content: "";
  width: 22px; height: 1px;
  background: var(--accent-mint);
}

/* === Hero === */
.hero {
  padding-top: clamp(80px, 12vw, 140px);
  padding-bottom: clamp(80px, 12vw, 140px);
  overflow: hidden;
}
.hero-grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: radial-gradient(ellipse at top, black 0%, transparent 70%);
  mask-image: radial-gradient(ellipse at top, black 0%, transparent 70%);
  opacity: 0.5;
  pointer-events: none;
}
.hero-glow {
  position: absolute;
  top: -200px; left: 50%;
  transform: translateX(-50%);
  width: 700px; height: 700px;
  background: radial-gradient(circle, rgba(43, 212, 255, 0.16) 0%, transparent 60%);
  pointer-events: none;
}
.hero-inner {
  position: relative;
  text-align: center;
  max-width: 980px;
  margin: 0 auto;
}
.hero h1 { margin-bottom: 24px; }
.hero h1 .accent {
  background: linear-gradient(90deg, var(--accent-blue), var(--accent-mint));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero .sub {
  font-size: clamp(1rem, 1.4vw, 1.18rem);
  color: var(--text-muted);
  max-width: 720px;
  margin: 0 auto 40px;
}
.hero-cta-row {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}
.hero-meta {
  margin-top: 64px;
  display: flex;
  justify-content: center;
  gap: 48px;
  flex-wrap: wrap;
  color: var(--text-dim);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.hero-meta span::before {
  content: "▸ ";
  color: var(--accent-blue);
}

/* === Section head === */
.section-head {
  max-width: 760px;
  margin-bottom: 64px;
}
.section-head h2 .accent { color: var(--accent-blue); }

/* === Solutions === */
.solutions { border-top: 1px solid var(--border); }

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
}
@media (max-width: 900px) {
  .grid-3 { grid-template-columns: 1fr; }
}
.card {
  background: var(--bg-elev);
  padding: 40px 32px;
  position: relative;
  transition: background .2s ease;
}
.card:hover { background: var(--surface); }
.card-num {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent-mint);
  letter-spacing: 0.18em;
  margin-bottom: 24px;
}
.card-icon {
  width: 44px; height: 44px;
  display: grid; place-items: center;
  border: 1px solid var(--border-strong);
  color: var(--accent-blue);
  margin-bottom: 28px;
}
.card h3 {
  font-size: 1.35rem;
  margin-bottom: 16px;
}
.card-list {
  list-style: none;
  padding: 0;
  margin: 20px 0 0;
}
.card-list li {
  padding: 12px 0;
  border-top: 1px dashed var(--border);
  color: var(--text-muted);
  font-size: 0.93rem;
  display: flex;
  gap: 10px;
}
.card-list li::before {
  content: "→";
  color: var(--accent-mint);
  flex-shrink: 0;
}

/* Two-card industries layout (override when only 2 cards) */
@media (min-width: 901px) {
  .grid-2-lg { grid-template-columns: repeat(2, 1fr); }
}

/* === Tech stack band === */
.techstack {
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: var(--bg);
  padding: clamp(56px, 8vw, 96px) 0;
}
.stack-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
@media (max-width: 900px) {
  .stack-row { grid-template-columns: 1fr; }
}
.stack-chip {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 24px 28px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  text-decoration: none;
  color: inherit;
  transition: border-color .2s ease, transform .2s ease;
}
.stack-chip:hover { border-color: var(--accent-blue); color: inherit; transform: translateY(-2px); }
.stack-mark {
  width: 56px; height: 56px;
  display: grid; place-items: center;
  border: 1px solid var(--accent-blue);
  color: var(--accent-blue);
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 1rem;
  letter-spacing: 0.04em;
  flex-shrink: 0;
}
.stack-name {
  color: var(--text);
  font-weight: 600;
  font-size: 1.05rem;
  margin-bottom: 4px;
}
.stack-sub {
  color: var(--text-dim);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
}

/* === Capabilities === */
.capabilities {
  background: var(--bg-elev);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.cap-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
@media (min-width: 1100px) {
  .cap-grid-4 { grid-template-columns: repeat(4, 1fr); }
}
@media (max-width: 1099px) and (min-width: 700px) {
  .cap-grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 900px) {
  .cap-grid { grid-template-columns: 1fr; }
}
@media (max-width: 699px) {
  .cap-grid-4 { grid-template-columns: 1fr; }
}
.cap-card {
  background: var(--bg);
  border: 1px solid var(--border);
  padding: 36px 32px;
  display: flex;
  flex-direction: column;
  transition: border-color .2s ease, transform .2s ease;
}
.cap-card:hover {
  border-color: var(--accent-blue);
  transform: translateY(-2px);
}
.cap-card .tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-dim);
  letter-spacing: 0.18em;
  margin-bottom: 20px;
}
.cap-icon {
  width: 56px; height: 56px;
  margin-bottom: 24px;
  color: var(--accent-mint);
}

/* === Process === */
.process { border-top: 1px solid var(--border); }
.process-flow {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin-top: 64px;
  position: relative;
}
.process-flow::before {
  content: "";
  position: absolute;
  top: 32px;
  left: 24px; right: 24px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-strong) 5%, var(--border-strong) 95%, transparent);
}
@media (max-width: 900px) {
  .process-flow { grid-template-columns: 1fr; }
  .process-flow::before {
    top: 0; bottom: 0; left: 32px; right: auto;
    width: 1px; height: auto;
    background: linear-gradient(180deg, transparent, var(--border-strong) 5%, var(--border-strong) 95%, transparent);
  }
}
.step {
  padding: 0 24px;
  position: relative;
}
@media (max-width: 900px) {
  .step { padding: 24px 0 24px 96px; }
}
.step-num {
  width: 64px; height: 64px;
  display: grid; place-items: center;
  background: var(--bg);
  border: 1px solid var(--accent-blue);
  color: var(--accent-blue);
  font-family: var(--font-mono);
  font-size: 1rem;
  letter-spacing: 0.05em;
  margin-bottom: 28px;
  position: relative;
  z-index: 1;
}
@media (max-width: 900px) {
  .step-num { position: absolute; left: 0; top: 24px; margin-bottom: 0; }
}
.step h3 {
  font-size: 1.3rem;
  margin-bottom: 12px;
}

/* === Contact === */
.contact {
  background: var(--bg-elev);
  border-top: 1px solid var(--border);
  padding-bottom: clamp(72px, 10vw, 128px);
}
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 80px;
  align-items: start;
}
@media (max-width: 900px) {
  .contact-grid { grid-template-columns: 1fr; gap: 48px; }
}
.contact-info h2 { margin-bottom: 24px; }
.contact-meta {
  margin-top: 40px;
  display: grid;
  gap: 0;
}
.contact-meta-row {
  padding: 18px 0;
  border-top: 1px solid var(--border);
}
.contact-meta-row .label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-dim);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin-bottom: 6px;
}
.contact-meta-row .val { color: var(--text); }

.contact-form {
  background: var(--bg);
  border: 1px solid var(--border);
  padding: 40px;
}
@media (max-width: 600px) {
  .contact-form { padding: 28px; }
}
.field {
  display: block;
  margin-bottom: 24px;
}
.field label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  margin-bottom: 10px;
}
.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 14px 16px;
  background: var(--bg-elev);
  border: 1px solid var(--border-strong);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  transition: border-color .15s ease;
}
.field input::placeholder,
.field textarea::placeholder { color: var(--text-dim); }
.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--accent-blue);
}
.field textarea { min-height: 140px; resize: vertical; }
.field select {
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'><path d='M1 1l5 5 5-5' stroke='%238B9AAB' stroke-width='1.5' fill='none'/></svg>");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 40px;
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
@media (max-width: 600px) {
  .form-row { grid-template-columns: 1fr; }
}
.form-notice {
  padding: 14px 16px;
  margin-bottom: 24px;
  font-size: 0.9rem;
  border: 1px solid;
}
.form-notice.ok {
  border-color: var(--accent-mint);
  color: var(--accent-mint);
  background: rgba(77, 255, 184, 0.06);
}
.form-notice.err {
  border-color: var(--danger);
  color: var(--danger);
  background: rgba(255, 90, 90, 0.06);
}

/* === Footer === */
.site-footer {
  border-top: 1px solid var(--border);
  background: var(--bg);
  padding: 48px 0 32px;
}
.site-footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  color: var(--text-dim);
  font-size: 0.85rem;
}
.site-footer-inner .legal {
  font-family: var(--font-mono);
  letter-spacing: 0.05em;
}

/* === Generic pages === */
.page-content {
  padding: 80px 0;
  max-width: 800px;
  margin: 0 auto;
}
.page-content h1 { margin-bottom: 32px; }
.page-content p { color: var(--text); }

/* === Inner page hero (About / Services) === */
.inner-hero {
  padding: clamp(96px, 12vw, 160px) 0 clamp(48px, 6vw, 80px);
  border-bottom: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}
.inner-hero .hero-grid-bg { opacity: 0.35; }
.inner-hero-inner {
  position: relative;
  max-width: 820px;
}
.inner-hero h1 { font-size: clamp(2rem, 4vw, 3.2rem); }
.inner-hero p.lead {
  font-size: clamp(1rem, 1.3vw, 1.15rem);
  color: var(--text-muted);
  max-width: 640px;
}

/* === Prose === */
.prose {
  max-width: 760px;
}
.prose h2 { margin-top: 1.5em; }
.prose p, .prose li { color: var(--text-muted); }
.prose strong { color: var(--text); font-weight: 600; }
.prose ul { padding-left: 1.2em; }
.prose ul li { margin: 0.4em 0; }

/* === Two-col block (Services detail) === */
.detail-row {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 64px;
  padding: 56px 0;
  border-top: 1px solid var(--border);
  align-items: start;
}
@media (max-width: 800px) {
  .detail-row { grid-template-columns: 1fr; gap: 24px; padding: 40px 0; }
}
.detail-row .label {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent-mint);
  letter-spacing: 0.18em;
  text-transform: uppercase;
}
.detail-row h3 {
  font-size: 1.5rem;
  margin: 8px 0 16px;
}
.detail-row ul {
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
}
.detail-row ul li {
  padding: 10px 0;
  border-top: 1px dashed var(--border);
  color: var(--text-muted);
  font-size: 0.95rem;
  display: flex; gap: 10px;
}
.detail-row ul li::before { content: "→"; color: var(--accent-blue); flex-shrink: 0; }

/* === Hub grid (Services / Industries hubs) === */
.hub-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 40px;
}
@media (max-width: 800px) { .hub-grid { grid-template-columns: 1fr; } }

.hub-card {
  display: flex;
  flex-direction: column;
  padding: 36px 32px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  text-decoration: none;
  color: inherit;
  transition: border-color .2s ease, transform .2s ease;
}
.hub-card:hover { border-color: var(--accent-blue); transform: translateY(-2px); color: inherit; }
.hub-card .tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--accent-mint);
  letter-spacing: 0.18em;
  margin-bottom: 18px;
}
.hub-card h3 {
  font-size: 1.4rem;
  margin: 0 0 14px;
}
.hub-card p { color: var(--text-muted); margin: 0 0 18px; }
.hub-card ul {
  list-style: none;
  padding: 0;
  margin: 0 0 24px;
}
.hub-card ul li {
  padding: 8px 0;
  border-top: 1px dashed var(--border);
  color: var(--text-muted);
  font-size: 0.9rem;
  display: flex;
  gap: 8px;
}
.hub-card ul li::before { content: "→"; color: var(--accent-blue); flex-shrink: 0; }
.hub-card .more {
  margin-top: auto;
  color: var(--accent-blue);
  font-weight: 500;
}

/* === Callout band (KPI / tech notes) === */
.callout {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  margin-top: 48px;
}
@media (max-width: 800px) { .callout { grid-template-columns: 1fr; } }
.callout > div {
  background: var(--bg);
  padding: 28px;
}
.callout .k {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--accent-mint);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin-bottom: 10px;
}
.callout .v {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 6px;
}
.callout .d { color: var(--text-muted); font-size: 0.9rem; }

/* === Logo strip === */
.logo-band {
  padding: clamp(40px, 6vw, 64px) 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: var(--bg);
}
.logo-band-head {
  margin-bottom: 24px;
  text-align: center;
  display: flex; justify-content: center;
}
.logo-strip {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
}
@media (max-width: 1100px) { .logo-strip { grid-template-columns: repeat(4, 1fr); } }
@media (max-width: 700px)  { .logo-strip { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 480px)  { .logo-strip { grid-template-columns: repeat(2, 1fr); } }
.logo-item {
  background: var(--bg-elev);
  padding: 24px;
  display: grid; place-items: center;
  min-height: 88px;
}
.logo-item img {
  max-height: 40px;
  width: auto;
  opacity: 0.75;
  filter: grayscale(100%) brightness(1.6) contrast(0.9);
  transition: opacity .2s ease, filter .2s ease;
}
.logo-item:hover img { opacity: 1; filter: none; }

/* === Case Study cards === */
.case-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 32px;
}
@media (max-width: 1000px) { .case-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px)  { .case-grid { grid-template-columns: 1fr; } }

.case-card {
  display: flex;
  flex-direction: column;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  text-decoration: none;
  color: inherit;
  overflow: hidden;
  transition: border-color .2s ease, transform .2s ease;
}
.case-card:hover { border-color: var(--accent-blue); transform: translateY(-2px); color: inherit; }
.case-thumb {
  aspect-ratio: 16 / 9;
  background-size: cover;
  background-position: center;
  background-color: var(--surface);
  border-bottom: 1px solid var(--border);
}
.case-thumb-empty {
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 32px 32px;
  background-color: var(--bg);
}
.case-body { padding: 24px 24px 28px; display: flex; flex-direction: column; gap: 10px; }
.case-meta {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent-mint);
  display: flex; gap: 8px; align-items: center; flex-wrap: wrap;
}
.case-meta .dot { color: var(--text-dim); }
.case-card h3 { font-size: 1.2rem; margin: 0; color: var(--text); }
.case-card p { color: var(--text-muted); margin: 0; font-size: 0.95rem; }
.case-card .more {
  margin-top: auto;
  padding-top: 8px;
  color: var(--accent-blue);
  font-weight: 500;
  font-size: 0.9rem;
}
.case-hero-img {
  aspect-ratio: 16 / 7;
  background-size: cover;
  background-position: center;
  background-color: var(--surface);
  border: 1px solid var(--border);
}

/* === Insight rows === */
.insight-list {
  margin-top: 32px;
  border-top: 1px solid var(--border);
}
.insight-row {
  display: grid;
  grid-template-columns: 140px 1fr 32px;
  gap: 28px;
  align-items: center;
  padding: 24px 0;
  border-bottom: 1px solid var(--border);
  text-decoration: none;
  color: inherit;
  transition: padding-left .15s ease;
}
.insight-row:hover { padding-left: 12px; color: inherit; }
@media (max-width: 700px) {
  .insight-row { grid-template-columns: 1fr 24px; gap: 12px; padding: 20px 0; }
  .insight-row .insight-date { grid-column: 1 / -2; }
}
.insight-date {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent-mint);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.insight-body h3 { font-size: 1.15rem; margin: 0 0 6px; color: var(--text); }
.insight-body p { margin: 0; color: var(--text-muted); font-size: 0.93rem; }
.insight-tag {
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-dim);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.insight-arrow {
  text-align: right;
  color: var(--accent-blue);
  font-size: 1.2rem;
}

/* === Archive pager === */
.archive-pager {
  margin-top: 56px;
  display: flex;
  justify-content: center;
}
.archive-pager .nav-links {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  align-items: center;
}
.archive-pager .page-numbers {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  padding: 0 12px;
  border: 1px solid var(--border-strong);
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  text-decoration: none;
  transition: all .15s ease;
}
.archive-pager .page-numbers:hover { border-color: var(--accent-blue); color: var(--accent-blue); }
.archive-pager .page-numbers.current {
  background: var(--accent-blue);
  border-color: var(--accent-blue);
  color: var(--bg);
}

/* === 404 === */
.error-404 {
  min-height: 60vh;
  display: grid;
  place-items: center;
  text-align: center;
}
.error-404 .code {
  font-family: var(--font-mono);
  font-size: clamp(4rem, 12vw, 8rem);
  color: var(--accent-blue);
  line-height: 1;
  margin-bottom: 16px;
}