/* Case study pages - styled with the new Winspeed design tokens.
   Targets the existing class names from the original case study HTML so the
   body markup does not need to change. */

@import url('./colors_and_type.css');

* { box-sizing: border-box; margin: 0; padding: 0; }
html, body {
  background: var(--bg-1);
  color: var(--fg-1);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  scroll-behavior: smooth;
}
body { overflow-x: hidden; }
button { font-family: inherit; cursor: pointer; }
a { color: inherit; text-decoration: none; }
::selection { background: color-mix(in oklab, var(--accent) 35%, transparent); color: var(--fg-1); }

/* ---------- Header (plain HTML version of the React Header) ---------- */
.cs-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(10,14,26,0.72); backdrop-filter: blur(14px) saturate(140%); -webkit-backdrop-filter: blur(14px) saturate(140%);
  border-bottom: 1px solid var(--line-1);
}
.cs-header__inner {
  max-width: 1280px; margin: 0 auto; padding: 0 40px;
  display: flex; align-items: center; gap: 36px; height: 64px;
}
.cs-header__brand { display: flex; align-items: center; gap: 10px; font-weight: 600; letter-spacing: -0.015em; font-size: 16px; color: var(--fg-1); }
.cs-header__brand img { width: 22px; height: 22px; object-fit: contain; }
.cs-header__brand .tld {
  font-family: var(--font-mono); font-weight: 500; font-size: 14px;
  background: var(--ws-brand-gradient);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.cs-header__nav { display: flex; gap: 24px; }
.cs-header__nav a { font-size: 13px; color: var(--fg-3); padding: 4px 0; transition: color var(--dur-fast); }
.cs-header__nav a:hover { color: var(--fg-1); }
.cs-header__right { margin-left: auto; display: flex; align-items: center; gap: 14px; }
.cs-header__back {
  font-family: var(--font-mono); font-size: 11px; color: var(--fg-3); letter-spacing: 0.06em;
  display: inline-flex; align-items: center; gap: 6px; text-transform: uppercase;
}
.cs-header__back:hover { color: var(--accent); }
.cs-header__cta {
  background: var(--accent); color: #05070D;
  padding: 8px 14px; border-radius: 10px; font: 600 13px var(--font-sans);
  display: inline-flex; align-items: center; gap: 6px;
  box-shadow: 0 0 0 1px rgba(11,192,245,0.5), 0 8px 28px rgba(11,192,245,0.22);
  transition: background var(--dur-fast), box-shadow var(--dur-base);
}
.cs-header__cta:hover { background: #38D4FF; box-shadow: 0 0 0 1px rgba(11,192,245,0.7), 0 14px 36px rgba(11,192,245,0.32); }
.cs-header__toggle {
  display: none; background: transparent; border: 1px solid var(--line-2); border-radius: 8px;
  width: 38px; height: 38px; padding: 0; flex-direction: column; gap: 4px; align-items: center; justify-content: center;
  margin-left: auto;
}
.cs-header__toggle span { display: block; width: 16px; height: 1.5px; background: var(--fg-1); }

/* ---------- Container ---------- */
.cs-container { max-width: 1080px; margin: 0 auto; padding: 0 40px; }

/* ---------- Hero ---------- */
.hero {
  position: relative; padding: 96px 0 72px; overflow: hidden; border-bottom: 1px solid var(--line-1);
  isolation: isolate;
}
.hero::before {
  content: ""; position: absolute; inset: 0; pointer-events: none; z-index: -1;
  background-image:
    linear-gradient(rgba(11,192,245,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(11,192,245,0.05) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(ellipse 1000px 600px at 30% 30%, black 30%, transparent 75%);
          mask-image: radial-gradient(ellipse 1000px 600px at 30% 30%, black 30%, transparent 75%);
}
.hero::after {
  content: ""; position: absolute; inset: 0; pointer-events: none; z-index: -1;
  background:
    radial-gradient(ellipse 700px 400px at 80% 30%, rgba(124,91,224,0.10), transparent 70%),
    radial-gradient(ellipse 600px 350px at 10% 80%, rgba(11,192,245,0.08), transparent 70%);
}
.hero > * { position: relative; max-width: 1080px; margin-left: auto; margin-right: auto; padding-left: 40px; padding-right: 40px; }

.case-study-badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 12px; border-radius: 999px;
  font-family: var(--font-mono); font-size: 11px; font-weight: 500;
  letter-spacing: 0.16em; text-transform: uppercase;
  background: rgba(11,192,245,0.1); color: var(--accent);
  border: 1px solid rgba(11,192,245,0.35);
  margin-bottom: 28px;
}
.case-study-badge svg { width: 14px; height: 14px; }

.hero h1 {
  font-family: var(--font-sans); font-weight: 500;
  font-size: clamp(44px, 5.6vw, 84px); line-height: 1.04; letter-spacing: -0.025em;
  color: var(--fg-1); margin-bottom: 24px; max-width: 880px;
}
.hero h1 .gradient-text {
  font-family: var(--font-serif); font-style: italic; font-weight: 400;
  background: linear-gradient(135deg, #38D4FF 0%, #7C5BE0 60%, #E25590 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
  letter-spacing: -0.01em;
}
.hero-subtitle {
  font-size: 19px; line-height: 1.55; color: var(--fg-3); max-width: 720px;
}

.meta-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 0;
  margin-top: 48px; max-width: 880px;
  border-top: 1px solid var(--line-1); border-bottom: 1px solid var(--line-1);
}
.meta-item {
  padding: 22px 24px; border-right: 1px solid var(--line-1);
}
.meta-item:last-child { border-right: none; }
.meta-label {
  font-family: var(--font-mono); font-size: 10px; color: var(--fg-4);
  letter-spacing: 0.16em; text-transform: uppercase; margin-bottom: 8px;
}
.meta-value {
  font: 500 17px var(--font-sans); color: var(--fg-1); letter-spacing: -0.015em;
}

/* ---------- Content sections ---------- */
.content {
  max-width: 1080px; margin: 0 auto; padding: 0 40px;
}
.section {
  padding: 72px 0; border-top: 1px solid var(--line-1);
}
.section:first-child { border-top: none; padding-top: 88px; }
.section-title {
  font: 500 clamp(32px, 3.4vw, 48px)/1.08 var(--font-sans);
  letter-spacing: -0.02em; color: var(--fg-1);
  margin-bottom: 32px; max-width: 760px;
}

/* ---------- Highlight box (problem / solution) ---------- */
.highlight-box {
  background: var(--bg-2); border: 1px solid var(--line-1); border-radius: 14px;
  padding: 28px 32px; margin-bottom: 24px; position: relative;
}
.highlight-box.problem { border-left: 3px solid var(--ws-warning); }
.highlight-box.solution { border-left: 3px solid var(--accent); }
.highlight-box h3 {
  display: flex; align-items: center; gap: 10px;
  font: 500 13px var(--font-mono); letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--fg-4); margin-bottom: 16px;
}
.highlight-box.problem h3 { color: var(--ws-warning); }
.highlight-box.solution h3 { color: var(--accent); }
.highlight-box h3 svg { width: 16px; height: 16px; }
.highlight-box p {
  font-size: 16px; line-height: 1.65; color: var(--fg-2); margin-bottom: 14px;
}
.highlight-box p:last-child { margin-bottom: 0; }
.highlight-box ul {
  list-style: none; margin-top: 14px;
}
.highlight-box ul li {
  font-size: 15px; line-height: 1.6; color: var(--fg-3); padding: 6px 0 6px 22px;
  position: relative;
}
.highlight-box ul li::before {
  content: "—"; position: absolute; left: 0; color: var(--accent); font-weight: 500;
}

/* ---------- Architecture flow ---------- */
.architecture {
  background: var(--bg-2); border: 1px solid var(--line-1); border-radius: 14px;
  padding: 28px; margin-top: 24px;
}
.architecture h3 {
  font: 500 11px var(--font-mono); letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--fg-4); margin-bottom: 22px;
}
.arch-flow {
  display: flex; align-items: stretch; gap: 8px; flex-wrap: wrap;
}
.arch-box {
  flex: 1 1 140px; background: var(--bg-1); border: 1px solid var(--line-1); border-radius: 10px;
  padding: 16px 18px; min-width: 140px;
}
.arch-box.highlight {
  border-color: rgba(11,192,245,0.45);
  background: rgba(11,192,245,0.05);
  box-shadow: 0 0 0 1px rgba(11,192,245,0.15), 0 6px 20px rgba(11,192,245,0.08);
}
.arch-box-title {
  font-family: var(--font-mono); font-size: 10px; color: var(--fg-4);
  letter-spacing: 0.14em; text-transform: uppercase; margin-bottom: 8px;
}
.arch-box-value {
  font: 500 14px var(--font-sans); color: var(--fg-1); letter-spacing: -0.01em;
}
.arch-box.highlight .arch-box-value { color: var(--accent); }
.arch-arrow {
  display: flex; align-items: center; color: var(--fg-4); font-family: var(--font-mono);
  padding: 0 4px;
}

/* ---------- Features grid ---------- */
.features-grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px;
}
.feature-card {
  background: var(--bg-2); border: 1px solid var(--line-1); border-radius: 14px;
  padding: 26px; transition: border-color var(--dur-base), background var(--dur-base);
}
.feature-card:hover { border-color: var(--line-2); background: var(--bg-3); }
.feature-icon {
  width: 38px; height: 38px; border-radius: 10px;
  background: rgba(11,192,245,0.08); border: 1px solid rgba(11,192,245,0.25);
  display: flex; align-items: center; justify-content: center;
  color: var(--accent); margin-bottom: 16px;
}
.feature-icon svg { width: 18px; height: 18px; }
.feature-title {
  font: 500 18px var(--font-sans); color: var(--fg-1); letter-spacing: -0.015em;
  margin-bottom: 8px;
}
.feature-desc {
  font-size: 14px; line-height: 1.6; color: var(--fg-3);
}

/* ---------- Output / sample data ---------- */
.output-example {
  background: var(--bg-2); border: 1px solid var(--line-1); border-radius: 14px;
  padding: 28px; margin-bottom: 24px;
}
.output-example h4 {
  font: 500 11px var(--font-mono); letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--fg-4); margin-bottom: 22px;
}
.output-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 0;
  border-top: 1px solid var(--line-1); border-bottom: 1px solid var(--line-1);
}
.output-stat {
  padding: 22px 18px; border-right: 1px solid var(--line-1);
}
.output-stat:last-child { border-right: none; }
.output-stat-value {
  font: 500 32px/1 var(--font-sans); color: var(--accent); letter-spacing: -0.025em;
  margin-bottom: 8px;
}
.output-stat-label {
  font-family: var(--font-mono); font-size: 10px; color: var(--fg-4);
  letter-spacing: 0.14em; text-transform: uppercase;
}

/* ---------- Code block ---------- */
.code-block {
  background: rgba(5,7,13,0.7); border: 1px solid var(--line-1); border-radius: 12px;
  overflow: hidden; margin-top: 18px;
}
.code-header {
  display: flex; align-items: center; gap: 8px; padding: 10px 16px;
  border-bottom: 1px solid var(--line-1); color: var(--fg-4);
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.05em;
}
.code-dot { width: 8px; height: 8px; border-radius: 999px; background: var(--ws-ink-700); }
.code-dot.red { background: #F26D6D; }
.code-dot.yellow { background: #F4B740; }
.code-dot.green { background: #34D9A4; }
.code-content {
  padding: 18px 20px; overflow-x: auto;
}
.code-content pre {
  font: 400 13px/1.65 var(--font-mono); color: var(--fg-2);
  white-space: pre; word-spacing: -0.05em;
}

/* ---------- Tech tags ---------- */
.tech-tags {
  display: flex; flex-wrap: wrap; gap: 8px;
}
.tech-tag {
  display: inline-block;
  background: var(--bg-3); border: 1px solid var(--line-1);
  border-radius: 999px; padding: 6px 14px;
  font: 500 12px var(--font-mono); color: var(--fg-2); letter-spacing: -0.01em;
  transition: border-color var(--dur-fast), color var(--dur-fast);
}
.tech-tag:hover { border-color: var(--accent); color: var(--accent); }

/* ---------- Results grid ---------- */
.results-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-bottom: 28px;
}
.result-card {
  background: var(--bg-2); border: 1px solid var(--line-1); border-radius: 14px;
  padding: 28px;
}
.result-icon {
  width: 38px; height: 38px; border-radius: 10px;
  background: rgba(11,192,245,0.08); border: 1px solid rgba(11,192,245,0.25);
  display: flex; align-items: center; justify-content: center;
  color: var(--accent); margin-bottom: 16px;
}
.result-icon svg { width: 18px; height: 18px; }
.result-value {
  font: 500 36px/1 var(--font-sans); color: var(--fg-1);
  letter-spacing: -0.025em; margin-bottom: 8px;
}
.result-label {
  font-size: 14px; line-height: 1.55; color: var(--fg-3);
}

/* ---------- General prose inside sections ---------- */
.section p {
  font-size: 16px; line-height: 1.7; color: var(--fg-2); margin-bottom: 16px;
  max-width: 760px;
}
.section p:last-child { margin-bottom: 0; }
.section ul, .section ol {
  margin: 14px 0 18px; padding-left: 22px; color: var(--fg-2);
  font-size: 15px; line-height: 1.7; max-width: 760px;
}
.section ul li, .section ol li { padding: 4px 0; }
.section h3 {
  font: 500 22px/1.2 var(--font-sans); color: var(--fg-1); letter-spacing: -0.015em;
  margin: 28px 0 14px;
}
.section h4 {
  font: 500 16px var(--font-sans); color: var(--fg-1); letter-spacing: -0.01em;
  margin: 22px 0 10px;
}
.section strong { color: var(--fg-1); font-weight: 600; }
.section code {
  font: 400 13px var(--font-mono); color: var(--accent);
  background: rgba(11,192,245,0.08); padding: 2px 6px; border-radius: 4px;
  border: 1px solid rgba(11,192,245,0.18);
}
.section a:not(.btn-primary) { color: var(--accent); border-bottom: 1px solid rgba(11,192,245,0.35); }
.section a:not(.btn-primary):hover { border-bottom-color: var(--accent); }

/* ---------- Related case studies ---------- */
.related {
  margin: 80px 0 0;
}
.related__head {
  font-family: var(--font-mono); font-size: 11px; font-weight: 500;
  letter-spacing: 0.16em; text-transform: uppercase; color: var(--fg-4);
  margin-bottom: 18px;
}
.related__title {
  font: 500 clamp(22px, 2.4vw, 30px)/1.2 var(--font-sans);
  letter-spacing: -0.015em; color: var(--fg-1); margin-bottom: 28px;
}
.related__grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px;
}
.related-card {
  display: block; padding: 22px; border-radius: 14px;
  background: var(--bg-2); border: 1px solid var(--line-1);
  color: var(--fg-1); text-decoration: none;
  transition: border-color var(--dur-base), transform var(--dur-base);
}
.related-card:hover { border-color: var(--accent); transform: translateY(-2px); }
.related-card .related-card__tag {
  font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--accent); margin-bottom: 10px;
}
.related-card .related-card__title {
  font-size: 17px; font-weight: 500; line-height: 1.3; margin-bottom: 8px; color: var(--fg-1);
}
.related-card .related-card__sub {
  font-size: 13px; color: var(--fg-3); line-height: 1.5;
}
@media (max-width: 768px) {
  .related__grid { grid-template-columns: 1fr; }
}

/* ---------- CTA section ---------- */
.cta-section {
  margin: 80px 0 0; padding: 56px 48px;
  background: var(--bg-2); border: 1px solid var(--line-1); border-radius: 18px;
  text-align: center;
  position: relative; overflow: hidden;
}
.cta-section::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(ellipse 600px 300px at 50% 0%, rgba(11,192,245,0.08), transparent 70%);
}
.cta-section > * { position: relative; }
.cta-section h2 {
  font: 500 clamp(28px, 3.2vw, 42px)/1.1 var(--font-sans);
  letter-spacing: -0.02em; color: var(--fg-1); margin-bottom: 14px;
}
.cta-section p {
  font-size: 16px; color: var(--fg-3); margin: 0 auto 28px; max-width: 520px; line-height: 1.6;
}
.btn-primary {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--accent); color: #05070D;
  padding: 14px 22px; border-radius: 10px; font: 600 14px var(--font-sans);
  box-shadow: 0 0 0 1px rgba(11,192,245,0.5), 0 8px 28px rgba(11,192,245,0.22);
  transition: background var(--dur-fast), box-shadow var(--dur-base);
}
.btn-primary:hover { background: #38D4FF; box-shadow: 0 0 0 1px rgba(11,192,245,0.7), 0 14px 36px rgba(11,192,245,0.32); }
.btn-primary svg { width: 16px; height: 16px; }

/* ---------- Footer ---------- */
.cs-footer {
  background: var(--ws-ink-1000); border-top: 1px solid var(--line-1);
  padding: 56px 0 0; margin-top: 80px;
}
.cs-footer__inner {
  max-width: 1280px; margin: 0 auto; padding: 0 40px 40px;
  display: grid; grid-template-columns: 1.4fr 2fr; gap: 80px;
}
.cs-footer__logo { display: flex; align-items: center; gap: 10px; font-weight: 600; font-size: 18px; letter-spacing: -0.015em; color: var(--fg-1); }
.cs-footer__logo img { width: 24px; height: 24px; }
.cs-footer__logo .tld { font-family: var(--font-mono); font-weight: 500; background: var(--ws-brand-gradient); -webkit-background-clip: text; background-clip: text; color: transparent; }
.cs-footer__tag { color: var(--fg-3); margin-top: 14px; max-width: 360px; line-height: 1.55; font-size: 14px; }
.cs-footer__contact { font-family: var(--font-mono); font-size: 13px; color: var(--accent); margin-top: 22px; display: inline-block; }
.cs-footer__cols { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; }
.cs-footer__head { font-family: var(--font-mono); font-size: 11px; font-weight: 500; letter-spacing: 0.16em; text-transform: uppercase; color: var(--fg-4); margin-bottom: 16px; }
.cs-footer__cols a { display: block; font-size: 14px; color: var(--fg-2); padding: 5px 0; }
.cs-footer__cols a:hover { color: var(--fg-1); }
.cs-footer__bar {
  border-top: 1px solid var(--line-1); padding: 18px 40px;
  max-width: 1280px; margin: 0 auto;
}
.cs-footer__bar-inner { display: flex; justify-content: space-between; font-family: var(--font-mono); font-size: 11px; color: var(--fg-4); }
.cs-footer__bar-inner .ok { color: var(--ws-success); }

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .meta-grid, .output-grid { grid-template-columns: repeat(2, 1fr); }
  .meta-item:nth-child(2), .output-stat:nth-child(2) { border-right: none; }
  .meta-item:nth-child(1), .meta-item:nth-child(2),
  .output-stat:nth-child(1), .output-stat:nth-child(2) { border-bottom: 1px solid var(--line-1); }
  .features-grid { grid-template-columns: 1fr; }
  .results-grid { grid-template-columns: 1fr; }
  .arch-flow { flex-direction: column; }
  .arch-arrow { transform: rotate(90deg); justify-content: center; padding: 4px 0; }
  .cs-footer__inner { grid-template-columns: 1fr; gap: 40px; }
}

@media (max-width: 900px) {
  .cs-header__nav { display: none; }
  .cs-header__back { display: none; }
}

@media (max-width: 640px) {
  .cs-container, .content, .cs-header__inner { padding-left: 24px; padding-right: 24px; }
  .hero { padding: 64px 0 56px; }
  .hero > * { padding-left: 24px; padding-right: 24px; }
  .section { padding: 56px 0; }
  .meta-grid, .output-grid { grid-template-columns: 1fr; }
  .meta-item, .output-stat { border-right: none !important; border-bottom: 1px solid var(--line-1); }
  .meta-item:last-child, .output-stat:last-child { border-bottom: none; }
  .cs-footer__cols { grid-template-columns: repeat(2, 1fr); }
  .cta-section { padding: 40px 28px; margin-top: 56px; }
}