/* Periscube.com Institutional Design System
   Template: Enterprise Decision Studio & Obsidian Telemetry Console
   Palette: Warm Canvas (#f7f3ef), Charcoal Ink (#312e2d), Obsidian (#01050e), Decision Orange (#f7901d), Cyan (#0ea5e9), Emerald (#10b981)
*/

/* Inter Variable (Latin, Latin-Extended for Turkish: ç, ğ, ı, ö, ş, ü, İ) */
@font-face {
  font-family: "Inter";
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  src: url("/assets/fonts/inter-variable.woff2") format("woff2 supports variations"),
       url("/assets/fonts/inter-variable.woff2") format("woff2-variations");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+2074, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD,
                 U+0100-024F, U+0259, U+1E00-1EFF, U+2020, U+20A0-20AB, U+20AD-20CF, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

/* JetBrains Mono Variable (Telemetry console and code blocks) */
@font-face {
  font-family: "JetBrains Mono";
  font-style: normal;
  font-weight: 100 800;
  font-display: swap;
  src: url("/assets/fonts/jetbrains-mono-variable.woff2") format("woff2 supports variations"),
       url("/assets/fonts/jetbrains-mono-variable.woff2") format("woff2-variations");
  unicode-range: U+0000-00FF, U+0100-024F, U+1E00-1EFF, U+2000-206F, U+2074, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

:lang(tr) {
  font-feature-settings: "locl" 1;
}

:root {
  --bg-canvas: #f0f7fc;
  --bg-surface: #ffffff;
  --bg-subtle: #e4f0fa;
  --bg-console: #06101e;
  --bg-console-elevated: #0d1b2e;
  --bg-console-card: #13253e;

  --ink-primary: #0c1e36;
  --ink-secondary: #243b55;
  --ink-muted: #4d6582;
  --ink-on-dark: #f8fafc;
  --ink-on-dark-muted: #94a3b8;

  --brand-royal: #0284c7;
  --brand-royal-dark: #0369a1;
  --brand-cyan: #0ea5e9;
  --brand-cyan-soft: rgba(14, 165, 233, 0.12);
  --brand-emerald: #10b981;
  --brand-emerald-soft: rgba(16, 185, 129, 0.14);
  --brand-amber: #f59e0b;

  /* Enterprise UI/UX Decision Studio Tokens */
  --ink-obsidian: #06101e;
  --ink-charcoal-primary: #0c1e36;
  --brand-accent-orange: #0284c7;
  --brand-accent-orange-soft: rgba(14, 165, 233, 0.14);
  --bg-canvas-warm: #eaf4fc;
  --bg-surface-light: #edf5fb;
  --ink-slate-warm: #94a3b8;
  --ink-mid-charcoal: #1e293b;
  --accent-peach: #dbeafe;
  --accent-mint: #cffafe;
  --accent-ice: #e0f2fe;
  --accent-peach-tint: #dbeafe;
  --accent-mint-tint: #cffafe;
  --accent-ice-tint: #e0f2fe;

  --border-light: #d0e4f5;
  --border-strong: #b3d4f0;
  --border-dark: rgba(14, 165, 233, 0.22);
  --border-cyan-glow: rgba(14, 165, 233, 0.45);

  --shadow-sm: 0 2px 8px rgba(12, 30, 54, 0.05);
  --shadow-md: 0 12px 30px -6px rgba(12, 30, 54, 0.08), 0 4px 12px -2px rgba(12, 30, 54, 0.05);
  --shadow-lg: 0 22px 48px -12px rgba(12, 30, 54, 0.16);
  --shadow-console: 0 24px 56px -12px rgba(6, 16, 30, 0.6);

  --radius-sm: 8px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 18px;

  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  --container-max: 1280px;
  --header-height: 74px;
}

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

html,
body {
  margin: 0;
  padding: 0;
  width: 100%;
  max-width: 100%;
  overflow-x: hidden;
  background-color: var(--bg-canvas);
  color: var(--ink-primary);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.62;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

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

/* Typography Hygiene */
h1,
h2,
h3,
h4 {
  margin-top: 0;
  color: var(--ink-primary);
  font-weight: 800;
  letter-spacing: -0.025em;
  line-height: 1.18;
  text-wrap: balance;
}

h1 {
  font-size: clamp(2.05rem, 3.8vw + 0.6rem, 3.45rem);
  margin-bottom: 1.15rem;
}

h2 {
  font-size: clamp(1.6rem, 2.5vw + 0.5rem, 2.4rem);
  margin-bottom: 0.9rem;
}

h3 {
  font-size: clamp(1.18rem, 1.3vw + 0.45rem, 1.48rem);
  margin-bottom: 0.6rem;
}

h4 {
  font-size: clamp(1.02rem, 0.8vw + 0.5rem, 1.18rem);
  margin-bottom: 0.45rem;
}

p,
li,
dd {
  text-wrap: pretty;
  color: var(--ink-secondary);
}

p {
  margin-top: 0;
  margin-bottom: 1rem;
}

a {
  color: var(--brand-royal-dark);
  text-decoration: none;
  transition: color 0.16s ease, background-color 0.16s ease, border-color 0.16s ease, transform 0.16s ease;
}

a:hover {
  color: var(--brand-cyan);
}

p a:not(.btn),
li a:not(.btn),
td a:not(.btn),
.footer-bottom a {
  text-decoration: underline;
  text-underline-offset: 2px;
}

code,
pre,
table {
  font-variant-numeric: tabular-nums;
}

code,
pre {
  font-family: var(--font-mono);
}

code {
  font-size: 0.86em;
  background: var(--bg-subtle);
  color: var(--brand-royal-dark);
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
  border: 1px solid var(--border-light);
  word-break: break-word;
}

h1 code,
h2 code,
h3 code,
h4 code {
  font-size: 0.84em;
  padding: 0.04em 0.32em;
  line-height: 1;
  vertical-align: baseline;
}

.dark-section code,
.hero-console code {
  background: rgba(14, 165, 233, 0.14);
  color: #7dd3fc;
  border-color: rgba(56, 189, 248, 0.25);
}

/* Skip Link */
.skip-link {
  position: absolute;
  top: -100px;
  left: 1rem;
  background: var(--ink-primary);
  color: #ffffff;
  padding: 0.6rem 1rem;
  border-radius: var(--radius-sm);
  z-index: 9999;
  font-weight: 600;
}

.skip-link:focus {
  top: 0.75rem;
}

/* Layout Containers & Grid Hygiene */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: clamp(1rem, 3vw, 2.25rem);
}

.grid-2,
.grid-3,
.grid-4,
.hero-grid,
.split-grid,
.footer-grid {
  display: grid;
  gap: 1.5rem;
  width: 100%;
}

.grid-2 > *,
.grid-3 > *,
.grid-4 > *,
.hero-grid > *,
.split-grid > *,
.footer-grid > * {
  min-width: 0;
  max-width: 100%;
}

.grid-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(1.5rem, 2vw, 1.85rem);
}

.grid-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(1.5rem, 2vw, 1.85rem);
}

.grid-4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: clamp(1.15rem, 1.5vw, 1.5rem);
}

.grid-4 h3 {
  font-size: clamp(1.12rem, 1.05vw + 0.35rem, 1.32rem);
  text-wrap: pretty;
}

.hero-grid {
  grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
  align-items: start;
  gap: clamp(1.5rem, 3vw, 2.75rem);
}

.split-grid {
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  align-items: start;
  gap: 2rem;
}

.status-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--brand-emerald);
  box-shadow: 0 0 8px var(--brand-emerald);
  margin-right: 0.35rem;
}

/* Sticky Institutional Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(240, 247, 252, 0.94);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-strong);
  min-height: var(--header-height);
  display: flex;
  align-items: center;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: clamp(0.35rem, 0.8vw, 0.85rem);
  width: 100%;
  min-height: var(--header-height);
}

.brand-lockup {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  color: var(--ink-primary);
  font-weight: 800;
  font-size: 1.22rem;
  letter-spacing: -0.03em;
  flex-shrink: 0;
}

.brand-lockup:hover {
  color: var(--ink-primary);
}

.brand-logo {
  height: 32px;
  width: auto;
  display: block;
  flex-shrink: 0;
}

.brand-meta {
  display: flex;
  flex-direction: column;
  align-items: center;
  line-height: 1.1;
}

.brand-sub {
  font-family: var(--font-mono);
  font-size: 0.56rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--ink-charcoal-primary);
  margin-top: 2px;
  white-space: nowrap;
}

.desktop-nav {
  display: flex;
  align-items: center;
  gap: clamp(0.05rem, 0.15vw, 0.15rem);
}

.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.38rem clamp(0.25rem, 0.35vw, 0.45rem);
  color: var(--ink-primary);
  font-size: clamp(0.75rem, 0.78vw, 0.82rem);
  font-weight: 600;
  border-radius: var(--radius-sm);
  white-space: nowrap;
}

.nav-link:hover,
.nav-link[aria-current="page"] {
  background: var(--bg-subtle);
  color: var(--ink-charcoal-primary);
}

.header-cta-group {
  display: flex;
  align-items: center;
  gap: clamp(0.3rem, 0.4vw, 0.45rem);
  flex-shrink: 0;
}

.lang-switch {
  display: inline-flex;
  align-items: center;
  background: var(--bg-subtle);
  border: 1px solid var(--ink-charcoal-primary);
  border-radius: var(--radius-sm);
  padding: 2px;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 700;
  flex-shrink: 0;
}

.lang-link {
  padding: 0.22rem 0.38rem;
  border-radius: 4px;
  color: var(--ink-secondary);
  line-height: 1;
  text-decoration: none;
}

.lang-link:hover {
  color: var(--ink-primary);
}

.lang-link.active {
  background: var(--ink-charcoal-primary);
  color: #ffffff;
}

/* Pure CSS Mobile Drawer */
.mobile-nav {
  display: none;
  position: relative;
}

.mobile-nav summary {
  list-style: none;
  cursor: pointer;
  padding: 0.5rem 0.85rem;
  border: 1px solid var(--ink-charcoal-primary);
  border-radius: var(--radius-sm);
  background: var(--bg-surface);
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--ink-primary);
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
}

.mobile-nav summary::-webkit-details-marker {
  display: none;
}

.mobile-drawer {
  position: absolute;
  top: calc(100% + 0.5rem);
  right: 0;
  width: min(92vw, 360px);
  max-height: 82vh;
  overflow-y: auto;
  background: var(--bg-surface);
  border: 1px solid var(--ink-charcoal-primary);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 1rem;
  z-index: 1200;
}

.mobile-drawer-links {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.mobile-drawer-links a {
  padding: 0.6rem 0.75rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.92rem;
  color: var(--ink-primary);
  border: 1px solid transparent;
}

.mobile-drawer-links a:hover {
  background: var(--bg-subtle);
  border-color: var(--border-light);
}

/* Buttons (Playbook Solid & Outline CTAs) */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  font-weight: 700;
  font-size: 0.92rem;
  line-height: 1.2;
  cursor: pointer;
  border: 2px solid transparent;
  text-align: center;
  white-space: nowrap;
}

.btn-sm {
  padding: 0.4rem clamp(0.45rem, 0.6vw, 0.75rem);
  font-size: clamp(0.75rem, 0.78vw, 0.82rem);
}

.btn-primary {
  background: var(--ink-charcoal-primary);
  color: #ffffff;
  border-color: var(--ink-charcoal-primary);
  box-shadow: 0 4px 12px rgba(1, 5, 14, 0.14);
}

.btn-primary:hover {
  background: var(--ink-obsidian);
  border-color: var(--brand-accent-orange);
  color: #ffffff;
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--bg-surface-light);
  color: var(--ink-charcoal-primary);
  border-color: var(--ink-charcoal-primary);
}

.btn-secondary:hover {
  background: var(--ink-charcoal-primary);
  color: #ffffff;
  border-color: var(--ink-charcoal-primary);
}

/* Section Spacing & Containment */
.section {
  padding-block: clamp(3.25rem, 6vw, 5.5rem);
  position: relative;
}

.section-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1.25rem;
  flex-wrap: wrap;
  margin-bottom: 1.75rem;
}

.section-header h2 {
  margin-bottom: 0;
}

.section-subtle {
  background-color: var(--bg-subtle);
  border-top: 1px solid var(--border-light);
  border-bottom: 1px solid var(--border-light);
}

.dark-section {
  background: radial-gradient(circle at 85% 15%, rgba(14, 165, 233, 0.16), transparent 45%),
              radial-gradient(circle at 15% 80%, rgba(14, 165, 233, 0.12), transparent 45%),
              linear-gradient(180deg, var(--ink-obsidian) 0%, #0c1a2e 100%);
  color: var(--ink-on-dark);
  border-top: 1px solid var(--border-dark);
  border-bottom: 1px solid var(--border-dark);
}

.dark-section h1,
.dark-section h2,
.dark-section h3,
.dark-section h4 {
  color: #ffffff;
}

.dark-section p,
.dark-section li {
  color: #cbd5e1;
}

/* Eyebrow & Bordered Pill Badges */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-charcoal-primary);
  background: var(--accent-peach);
  border: 1px solid var(--ink-charcoal-primary);
  padding: 0.25rem 0.68rem;
  border-radius: 8px;
  margin-bottom: 1rem;
}

.dark-section .eyebrow {
  color: #f8fafc;
  background: var(--ink-mid-charcoal);
  border-color: var(--ink-slate-warm);
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 600;
  padding: 0.25rem 0.62rem;
  border-radius: 8px;
  background: var(--bg-subtle);
  color: var(--ink-secondary);
  border: 1px solid var(--border-strong);
}

.pill-live {
  background: var(--accent-mint);
  color: #065f46;
  border-color: var(--ink-charcoal-primary);
}

.dark-section .pill,
.hero-console .pill {
  background: rgba(30, 41, 59, 0.85);
  color: #cbd5e1;
  border-color: rgba(14, 165, 233, 0.28);
}

.dark-section .pill-live,
.hero-console .pill-live {
  background: rgba(16, 185, 129, 0.16);
  color: #34d399;
  border-color: rgba(16, 185, 129, 0.4);
}

/* Hero Section & Live Telemetry Console */
.hero {
  padding-block: clamp(2.5rem, 5vw, 4.5rem);
  background:
    radial-gradient(circle at 12% 15%, rgba(186, 230, 253, 0.75), transparent 44%),
    radial-gradient(circle at 88% 20%, rgba(224, 242, 254, 0.70), transparent 44%),
    var(--bg-canvas);
  border-bottom: 1px solid var(--border-strong);
}

.hero-lead {
  font-size: clamp(1.05rem, 1.15vw + 0.5rem, 1.22rem);
  line-height: 1.68;
  max-width: 48rem;
  color: var(--ink-secondary);
  margin-bottom: 1.5rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-bottom: 1.6rem;
}

/* Dark Telemetry Console (.hero-console) */
.hero-console {
  background: var(--ink-obsidian);
  color: var(--ink-on-dark);
  border-radius: var(--radius-xl);
  border: 1px solid rgba(14, 165, 233, 0.4);
  box-shadow: var(--shadow-console);
  overflow: hidden;
  width: 100%;
}

.console-topbar {
  background: #06101e;
  padding: 0.75rem 1.1rem;
  border-bottom: 1px solid var(--border-dark);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.console-dots {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.console-dots span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.console-dots span:nth-child(1) { background: #ef4444; }
.console-dots span:nth-child(2) { background: #f7901d; }
.console-dots span:nth-child(3) { background: #10b981; }

.console-title {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--ink-slate-warm);
  font-weight: 600;
}

.console-body {
  padding: 1.15rem;
}

.telemetry-kpi-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
  margin-bottom: 0;
}

.telemetry-box {
  background: var(--bg-console-elevated);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-md);
  padding: 0.8rem 0.9rem;
}

.telemetry-box .t-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-slate-warm);
  display: block;
  margin-bottom: 0.25rem;
}

.telemetry-box .t-val {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 800;
  color: #38bdf8;
  display: block;
}

.telemetry-box .t-val.emerald {
  color: #34d399;
}

.telemetry-box .t-sub {
  font-size: 0.75rem;
  color: #cbd5e1;
  display: block;
  margin-top: 0.2rem;
}

/* Enterprise Client & Procurement Logo Strip */
.logo-strip {
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-strong);
  padding: 1.35rem 0;
}

.logo-strip-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.73rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-muted);
  margin-bottom: 0.75rem;
  font-weight: 700;
}

.logo-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  align-items: center;
}

.logo-pill {
  font-family: var(--font-sans);
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--ink-primary);
  background: var(--bg-canvas);
  border: 1px solid var(--border-strong);
  padding: 0.42rem 0.85rem;
  border-radius: var(--radius-sm);
}

.logo-pill span {
  font-weight: 500;
  color: var(--ink-muted);
}

/* Institutional Cards */
.card {
  background: var(--bg-surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  padding: clamp(1.35rem, 2vw, 1.75rem);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  height: 100%;
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}

.card p {
  font-size: 0.94rem;
  line-height: 1.64;
  margin-bottom: 0.85rem;
}

.card h3 {
  line-height: 1.28;
  margin-bottom: 0.7rem;
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--brand-accent-orange);
}

.dark-section .card {
  background: linear-gradient(180deg, rgba(13, 27, 46, 0.96) 0%, rgba(6, 16, 30, 0.98) 100%);
  border: 1px solid rgba(14, 165, 233, 0.22);
  border-top: 2px solid var(--brand-accent-orange);
  box-shadow: 0 16px 36px -10px rgba(6, 16, 30, 0.6);
}

.dark-section .card:hover {
  border-color: var(--brand-accent-orange);
  box-shadow: 0 20px 42px -10px rgba(14, 165, 233, 0.25);
}

.card-index {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.04em;
  line-height: 1.35;
  color: var(--ink-charcoal-primary);
  background: var(--bg-surface-light);
  border: 1px solid var(--ink-charcoal-primary);
  padding: 2px 10px;
  border-radius: 8px;
  margin-bottom: 0.85rem;
  width: fit-content;
}

.dark-section .card-index {
  color: #f8fafc;
  background: var(--ink-mid-charcoal);
  border-color: var(--ink-slate-warm);
}

.card-list {
  padding-left: 1.15rem;
  margin: 0.75rem 0 1.15rem;
}

.card-list li {
  margin-bottom: 0.45rem;
  font-size: 0.92rem;
}

.card-footer-link {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  gap: 0.35rem;
  font-weight: 700;
  font-size: 0.86rem;
  color: var(--ink-charcoal-primary);
  margin-top: auto;
  padding-top: 0.75rem;
  padding-bottom: 0.25rem;
  border-top: 1px solid var(--border-light);
  border-bottom: 2px solid var(--ink-charcoal-primary);
}

.card-footer-link:hover {
  color: var(--ink-obsidian);
  border-bottom-color: var(--brand-accent-orange);
}

.dark-section .card-footer-link {
  border-top-color: rgba(14, 165, 233, 0.2);
  border-bottom-color: var(--ink-slate-warm);
  color: #f8fafc;
}

.dark-section .card-footer-link:hover {
  color: #ffffff;
  border-bottom-color: var(--brand-accent-orange);
}

/* Case Study 4-Block Standardized Card */
.case-study-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-xl);
  padding: clamp(1.25rem, 2.5vw, 2rem);
  margin-bottom: 1.75rem;
  box-shadow: var(--shadow-sm);
}

.case-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  border-bottom: 1px solid var(--border-light);
  padding-bottom: 1.1rem;
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
}

.case-four-blocks {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.15rem;
}

.case-block {
  background: var(--bg-canvas);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 1.05rem;
}

.case-block.impact-block {
  background: #0b1c33;
  border-color: rgba(56, 189, 248, 0.35);
  color: #f8fafc;
  grid-column: 1 / -1;
}

.case-block.impact-block h4 {
  color: #38bdf8;
}

.case-block.impact-block p,
.case-block.impact-block li {
  color: #e2e8f0;
}

.case-block-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--brand-royal-dark);
  display: block;
  margin-bottom: 0.35rem;
}

.case-block.impact-block .case-block-label {
  color: #34d399;
}

/* Responsive Data Tables with Container Queries */
.table-wrapper {
  overflow-x: auto;
  max-inline-size: 100%;
  container-type: inline-size;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  background: var(--bg-surface);
  box-shadow: var(--shadow-sm);
  margin-block: 1.25rem;
}

.dark-section .table-wrapper {
  background: var(--bg-console-elevated);
  border-color: var(--border-dark);
}

table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.88rem;
}

caption {
  text-align: left;
  padding: 0.85rem 1rem;
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--ink-muted);
  border-bottom: 1px solid var(--border-light);
  background: var(--bg-subtle);
}

.dark-section caption {
  background: #09172a;
  color: #94a3b8;
  border-bottom-color: var(--border-dark);
}

thead th {
  background: #0b1c33;
  color: #ffffff;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border-dark);
}

tbody th,
tbody td {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border-light);
  vertical-align: top;
  color: var(--ink-secondary);
}

tbody th {
  color: var(--ink-primary);
  font-weight: 700;
}

.dark-section tbody th {
  color: #f8fafc;
  border-bottom-color: var(--border-dark);
}

.dark-section tbody td {
  color: #cbd5e1;
  border-bottom-color: var(--border-dark);
}

tbody tr:last-child th,
tbody tr:last-child td {
  border-bottom: none;
}

/* Forms & Intake Controls */
.form-group {
  margin-bottom: 1rem;
}

.form-label {
  display: block;
  font-weight: 700;
  font-size: 0.86rem;
  color: var(--ink-primary);
  margin-bottom: 0.35rem;
}

.form-control {
  width: 100%;
  padding: 0.7rem 0.9rem;
  font-family: var(--font-sans);
  font-size: 0.92rem;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  background: var(--bg-surface);
  color: var(--ink-primary);
}

.form-control:focus {
  outline: 2px solid var(--brand-cyan);
  border-color: var(--brand-royal);
}

/* Footer */
.site-footer {
  background: var(--ink-obsidian);
  color: #cbd5e1;
  border-top: 1px solid var(--border-dark);
  padding-block: 3.5rem 2.25rem;
  font-size: 0.88rem;
}

.site-footer p,
.footer-brand-desc {
  color: #cbd5e1;
  font-size: 0.86rem;
  line-height: 1.55;
  margin-top: 0.75rem;
  margin-bottom: 0;
}

.footer-grid {
  grid-template-columns: 1.4fr repeat(4, minmax(0, 1fr));
  gap: 1.75rem;
  margin-bottom: 2.5rem;
}

.site-footer h4 {
  color: #ffffff;
  font-size: 0.86rem;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 0.85rem;
}

.footer-col ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.footer-col ul a {
  color: var(--ink-slate-warm);
  font-size: 0.86rem;
  text-decoration: none;
}

.footer-col ul a:hover {
  color: var(--brand-accent-orange);
}

.footer-bottom {
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-dark);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.8rem;
  color: var(--ink-slate-warm);
}

/* Responsive Breakpoints (375px to 1440px+) */
@media (max-width: 1080px) {
  .desktop-nav {
    display: none;
  }
  .mobile-nav {
    display: block;
  }
  .hero-grid,
  .split-grid {
    grid-template-columns: 1fr;
  }
  .grid-4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .footer-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 720px) {
  .header-cta-group .btn-secondary,
  .header-cta-group .btn-primary {
    display: none;
  }
  .grid-2,
  .grid-3,
  .grid-4,
  .case-four-blocks,
  .telemetry-kpi-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }
  /* Stack responsive tables cleanly on mobile screens */
  table,
  thead,
  tbody,
  tr,
  th,
  td {
    display: block;
    width: 100%;
  }
  thead {
    display: none;
  }
  tbody tr {
    border-bottom: 2px solid var(--border-strong);
    padding: 0.5rem 0;
  }
  tbody th,
  tbody td {
    padding: 0.45rem 0.85rem;
    border-bottom: 1px dashed var(--border-light);
  }
}

/* Testimonials, Takeaways, FAQ & Article Meta */
.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.25rem;
  margin-top: 1.25rem;
}

.testimonial-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-strong);
  border-left: 4px solid var(--brand-accent-orange);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 0.85rem;
  box-shadow: var(--shadow-sm);
}

.dark-section .testimonial-card {
  background: var(--bg-console-elevated);
  border-color: var(--border-dark);
  border-left-color: var(--brand-accent-orange);
}

.testimonial-quote {
  font-size: 0.94rem;
  line-height: 1.55;
  color: var(--ink-primary);
  font-style: italic;
  margin: 0;
}

.dark-section .testimonial-quote {
  color: #f1f5f9;
}

.testimonial-author {
  font-size: 0.82rem;
  color: var(--ink-secondary);
  border-top: 1px solid var(--border-light);
  padding-top: 0.65rem;
}

.dark-section .testimonial-author {
  color: var(--ink-slate-warm);
  border-top-color: var(--border-dark);
}

.testimonial-author strong {
  display: block;
  color: var(--ink-primary);
  font-size: 0.86rem;
}

.dark-section .testimonial-author strong {
  color: #ffffff;
}

.takeaway-box {
  background: var(--ink-obsidian);
  color: #f8fafc;
  border: 1px solid rgba(14, 165, 233, 0.4);
  border-left: 4px solid #10b981;
  border-radius: var(--radius-md);
  padding: 1.25rem 1.4rem;
  margin-top: 1.5rem;
}

.takeaway-box h3,
.takeaway-box h4 {
  color: #34d399;
  font-size: 0.92rem;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.45rem;
}

.takeaway-box p {
  color: #e2e8f0;
  font-size: 0.92rem;
  margin-bottom: 0;
}

.article-meta-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--ink-secondary);
  background: var(--bg-surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  padding: 0.65rem 1rem;
  margin-top: 1rem;
}

.benchmark-note {
  background: var(--bg-subtle);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  padding: 0.85rem 1.1rem;
  font-size: 0.84rem;
  color: var(--ink-secondary);
  margin-top: 1.25rem;
}

.faq-list {
  display: grid;
  gap: 0.75rem;
  margin-top: 1.25rem;
}

.faq-item {
  background: var(--bg-surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  padding: 0.95rem 1.2rem;
}

.faq-item summary {
  font-weight: 700;
  font-size: 0.98rem;
  color: var(--ink-primary);
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--ink-charcoal-primary);
}

.faq-item[open] summary::after {
  content: "-";
}

.faq-item p {
  margin-top: 0.65rem;
  margin-bottom: 0;
  font-size: 0.92rem;
  color: var(--ink-secondary);
}

@media (max-width: 960px) {
  .testimonial-grid {
    grid-template-columns: 1fr;
  }
}

/* CSP style-src 'self' Compliance (Zero Inline Styles) */
.footer-brand-desc a,
.footer-bottom a {
  color: #38bdf8;
}

.t-val a {
  color: inherit;
}

.mobile-drawer-links a:first-child {
  color: var(--ink-charcoal-primary);
  font-weight: 700;
}

.site-footer .brand-lockup {
  color: #ffffff;
}

.site-footer .brand-sub {
  color: var(--brand-accent-orange);
}

.case-header h2 {
  margin-top: 0.5rem;
}

.case-block .card-list {
  margin-bottom: 0;
}

form .btn {
  width: 100%;
}

.card > div > .btn-primary {
  width: 100%;
  margin-bottom: 1.35rem;
}

/* Enterprise UI/UX Decision Studio & Cockpit Components */
.cockpit-card {
  border: 2px solid var(--ink-charcoal-primary);
  background: var(--bg-surface-light);
  padding: 2.25rem;
  border-radius: 16px 0 0 16px;
}

@media (max-width: 720px) {
  .cockpit-card {
    border-radius: var(--radius-md);
    padding: 1.5rem;
  }
}

.cockpit-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  margin: 1.75rem 0 1.5rem;
}

@media (max-width: 900px) {
  .cockpit-grid {
    grid-template-columns: 1fr;
  }
}

.cockpit-persona-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.cockpit-persona-card:hover {
  transform: translateY(-2px);
  border-color: var(--brand-accent-orange);
  box-shadow: 0 10px 24px -6px rgba(1, 5, 14, 0.08);
}

.cockpit-persona-card h3 {
  margin: 0.25rem 0 0.5rem;
  font-size: 1.25rem;
}

.cockpit-persona-card p {
  font-size: 0.9375rem;
  color: var(--ink-secondary);
  margin-bottom: 0.75rem;
}

.pill-badge {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 8px;
  border: 1px solid var(--ink-charcoal-primary);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--ink-charcoal-primary);
  background: var(--accent-peach);
  width: fit-content;
}

.kpi-metric-tile {
  background: var(--bg-canvas-warm);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  padding: 1rem;
  margin-top: auto;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.kpi-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--ink-muted);
  font-weight: 600;
}

.kpi-value {
  font-size: 2rem;
  font-weight: 800;
  line-height: 1.1;
  color: var(--ink-charcoal-primary);
  font-family: var(--font-sans);
}

.kpi-delta {
  font-size: 0.8125rem;
  font-weight: 600;
}

.delta-positive {
  color: #047857;
}

.delta-neutral {
  color: var(--brand-royal-dark);
}

.cockpit-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1.25rem;
  margin-top: 1.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border-strong);
}

.btn-charcoal {
  background: var(--ink-charcoal-primary);
  color: #ffffff !important;
  border: 2px solid var(--ink-charcoal-primary);
  border-radius: 8px;
  padding: 0.75rem 1.5rem;
  font-weight: 600;
  font-size: 0.9375rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  transition: background 0.2s ease, border-color 0.2s ease;
}

.btn-charcoal:hover {
  background: var(--ink-obsidian);
  border-color: var(--brand-accent-orange);
}

.link-rail {
  position: relative;
  color: var(--ink-charcoal-primary);
  font-weight: 600;
  font-size: 0.9375rem;
  text-decoration: none;
  padding-bottom: 4px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.link-rail::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 90%;
  height: 2px;
  background: var(--ink-charcoal-primary);
  transition: background 0.2s ease, width 0.2s ease;
}

.link-rail:hover::after {
  background: var(--brand-accent-orange);
  width: 100%;
}

.ic-arrow-diag {
  display: inline-block;
  transform: rotate(45deg);
  transition: transform 0.2s ease;
}

.link-rail:hover .ic-arrow-diag {
  transform: rotate(45deg) translate(2px, -2px);
}

@media print {
  body {
    background: #ffffff !important;
    color: #0b1220 !important;
  }
  .hero-console, .telemetry-box, .dark-section, .takeaway-box, .case-study-card, .case-block, .card, section {
    background: #ffffff !important;
    color: #0b1220 !important;
    border: 1px solid #e2e8f0 !important;
    box-shadow: none !important;
  }
  .dark-section h1, .dark-section h2, .dark-section h3, .dark-section h4,
  .dark-section p, .dark-section li, .hero-console .t-val, .hero-console .t-sub, .hero-console .t-label {
    color: #0b1220 !important;
  }
  .site-header, nav, footer, .eyebrow, .pill, .status-dot {
    display: none !important;
  }
  a[href^="http"]::after {
    content: " (" attr(href) ")";
    font-size: 0.8em;
  }
}