/* ============================================================
   References & Case Study styles
   ============================================================ */

/* ---- References hero ---- */
.ref-hero {
  padding: 160px 0 80px;
  background:
    radial-gradient(rgba(108,99,255,0.12) 1px, transparent 1px);
  background-size: 36px 36px;
}

.ref-hero__title {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}

.ref-hero__sub {
  color: var(--muted);
  font-size: 1.1rem;
  max-width: 540px;
  line-height: 1.7;
}

/* ---- Tags ---- */
.ref-tag {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 5px 12px;
  border-radius: 100px;
  border: 1px solid var(--border);
  color: var(--muted);
  background: var(--surface);
}

.ref-tag--cat {
  border-color: rgba(0,212,255,0.3);
  color: var(--accent2);
  background: rgba(0,212,255,0.06);
}

.ref-tag--featured-label {
  border-color: rgba(108,99,255,0.4);
  color: var(--accent);
  background: rgba(108,99,255,0.08);
}

/* When featured card is inside index.html (h3 instead of h2) */
.ref-card--featured h3 {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.ref-date {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--muted);
  letter-spacing: 0.05em;
}

/* ---- Main layout ---- */
.ref-main {
  padding: 64px 0 100px;
}

/* ---- Featured card ---- */
.ref-card--featured {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 48px;
  margin-bottom: 48px;
  position: relative;
  overflow: hidden;
  transition: border-color var(--transition);
}
.ref-card--featured::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--grad);
  border-radius: 24px 24px 0 0;
}
.ref-card--featured:hover { border-color: rgba(108,99,255,0.4); }

.ref-card__meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 28px;
  flex-wrap: wrap;
}

.ref-card__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.ref-card__text h2 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.ref-card__location {
  font-size: 0.85rem;
  color: var(--muted);
  margin-bottom: 16px;
}

.ref-card__summary {
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.7;
  margin-bottom: 24px;
}

.ref-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 28px;
}
.ref-card__tags span {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
  border: 1px solid rgba(108,99,255,0.3);
  padding: 4px 10px;
  border-radius: 100px;
}

.ref-card__actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

/* ---- Browser mockup ---- */
.ref-card__screen {
  background: #0a0a14;
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 24px 60px rgba(0,0,0,0.4);
}

.ref-card__screen-bar {
  background: #111122;
  padding: 10px 14px;
  display: flex;
  align-items: center;
  gap: 6px;
  border-bottom: 1px solid var(--border);
}
.ref-card__screen-bar span {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--border);
}
.ref-card__screen-bar span:nth-child(1) { background: #ff5f57; }
.ref-card__screen-bar span:nth-child(2) { background: #ffbd2e; }
.ref-card__screen-bar span:nth-child(3) { background: #28c840; }

.ref-card__url {
  margin-left: 12px;
  background: var(--bg);
  border-radius: 6px;
  padding: 3px 12px;
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--muted);
  flex: 1;
}

.ref-card__screen-body { padding: 0; }

/* ---- Site mockup visual ---- */
.ref-mockup {
  background: linear-gradient(135deg, #1a0a2e, #0a1628);
  min-height: 220px;
}

.ref-mockup__hero {
  background: linear-gradient(135deg, #c0392b, #8e1e1e);
  padding: 32px 24px;
  text-align: center;
}
.ref-mockup__logo {
  font-family: var(--mono);
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: #fff;
  text-shadow: 0 2px 8px rgba(0,0,0,0.4);
}
.ref-mockup__sub {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.7);
  margin-top: 4px;
  letter-spacing: 0.05em;
}
.ref-mockup__tags {
  font-size: 0.65rem;
  color: rgba(255,200,100,0.85);
  margin-top: 8px;
  letter-spacing: 0.06em;
  font-family: var(--mono);
}

.ref-mockup__menu {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--border);
}
.ref-mockup__item {
  background: #100c1e;
  padding: 12px 16px;
  font-size: 0.78rem;
  color: var(--muted);
}

/* ---- Mini reference grid ---- */
.ref-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 80px;
}

.ref-mini {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: border-color var(--transition), transform var(--transition);
}
.ref-mini:hover {
  border-color: rgba(108,99,255,0.4);
  transform: translateY(-4px);
}

.ref-mini__top {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.ref-mini h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 10px;
}

.ref-mini p {
  font-size: 0.88rem;
  color: var(--muted);
  line-height: 1.65;
  margin-bottom: 16px;
}

.ref-mini__link {
  display: inline-block;
  margin-top: 14px;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--accent2);
  border-bottom: 1px solid rgba(0,212,255,0.3);
  padding-bottom: 2px;
  transition: border-color var(--transition), color var(--transition);
}
.ref-mini__link:hover {
  border-color: var(--accent2);
  color: #fff;
}

/* ---- CTA ---- */
.ref-cta {
  text-align: center;
  padding: 80px 0 20px;
  border-top: 1px solid var(--border);
}
.ref-cta h2 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 12px;
}
.ref-cta p {
  color: var(--muted);
  margin-bottom: 28px;
  font-size: 1.05rem;
}

/* ============================================================
   Case Study
   ============================================================ */

.case-hero {
  padding: 140px 0 80px;
  background:
    linear-gradient(rgba(108,99,255,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,212,255,0.05) 1px, transparent 1px);
  background-size: 80px 80px;
}

.case-hero__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.case-hero__breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--muted);
  margin-bottom: 16px;
}
.case-hero__breadcrumb a { color: var(--accent2); }
.case-hero__breadcrumb a:hover { text-decoration: underline; }

.case-hero__title {
  font-size: clamp(2rem, 4vw, 3.25rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.case-hero__sub {
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.7;
  margin-bottom: 32px;
}

.case-hero__meta {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  padding: 24px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.case-meta-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.case-meta-item__label {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent2);
}
.case-meta-item span:last-child {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text);
}

/* ---- Blog post body ---- */
.case-body {
  padding: 80px 0 100px;
}

.case-container {
  max-width: 820px;
  margin: 0 auto;
  padding: 0 24px;
}

.case-section {
  margin-bottom: 64px;
  padding-bottom: 64px;
  border-bottom: 1px solid var(--border);
}
.case-section:last-of-type { border-bottom: none; }

.case-section h2 {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 20px;
  letter-spacing: -0.01em;
}

.case-section h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin: 32px 0 10px;
  color: var(--accent2);
}

.case-section p {
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.8;
  margin-bottom: 16px;
}
.case-section p strong { color: var(--text); }
.case-section p em { color: var(--text); font-style: italic; }

.case-highlight {
  background: var(--surface);
  border-left: 3px solid var(--accent);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 24px 28px;
  margin: 28px 0;
}
.case-highlight blockquote {
  font-size: 1.1rem;
  font-style: italic;
  color: var(--text);
  margin: 0 0 8px;
  line-height: 1.6;
}
.case-highlight cite {
  font-size: 0.82rem;
  color: var(--muted);
  font-style: normal;
}

.case-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin: 32px 0;
}

.case-stat {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 20px;
  text-align: center;
}
.case-stat__num {
  font-size: 2rem;
  font-weight: 700;
  background: var(--grad);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 8px;
}
.case-stat__label {
  font-size: 0.8rem;
  color: var(--muted);
  line-height: 1.4;
}

.case-details-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 24px;
}

.case-detail-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: border-color var(--transition), transform var(--transition);
}
.case-detail-card:hover {
  border-color: rgba(108,99,255,0.4);
  transform: translateY(-3px);
}
.case-detail-card__icon { font-size: 1.5rem; margin-bottom: 10px; }
.case-detail-card h4 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 8px;
}
.case-detail-card p {
  font-size: 0.85rem;
  color: var(--muted);
  line-height: 1.6;
  margin: 0;
}

.case-nav {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding-top: 48px;
  flex-wrap: wrap;
}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 900px) {
  .ref-card__inner  { grid-template-columns: 1fr; }
  .ref-grid         { grid-template-columns: 1fr 1fr; }
  .case-hero__inner { grid-template-columns: 1fr; }
  .case-stats       { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 600px) {
  .ref-grid           { grid-template-columns: 1fr; }
  .case-details-grid  { grid-template-columns: 1fr; }
  .case-hero__meta    { grid-template-columns: 1fr; }
  .case-stats         { grid-template-columns: 1fr; }
  .ref-card--featured { padding: 28px 20px; }
  .case-nav           { flex-direction: column; }
}