/* ============================================
   VERTICAL · Shared styles for secondary pages
   Banner, breadcrumb, vertical-tag, capability strip, stats strip,
   and overview grid — themed via --vertical-accent custom properties.
   ============================================ */

/* ── Accent theming · set per page via modifier class ── */
.vertical-banner--data {
  --vertical-accent: var(--service-data);
  --vertical-accent-soft: var(--service-data-soft);
}
.vertical-banner--ai {
  --vertical-accent: var(--service-ai);
  --vertical-accent-soft: var(--service-ai-soft);
}
.vertical-banner--software {
  --vertical-accent: var(--service-software);
  --vertical-accent-soft: var(--service-software-soft);
}
.vertical-banner--method {
  --vertical-accent: var(--blue);
  --vertical-accent-soft: var(--blue-on-dark);
}

/* Match the accent on overview sections that follow the banner */
[data-vertical="data"] { --vertical-accent: var(--service-data); --vertical-accent-soft: var(--service-data-soft); }
[data-vertical="ai"] { --vertical-accent: var(--service-ai); --vertical-accent-soft: var(--service-ai-soft); }
[data-vertical="software"] { --vertical-accent: var(--service-software); --vertical-accent-soft: var(--service-software-soft); }
[data-vertical="method"] { --vertical-accent: var(--blue); --vertical-accent-soft: var(--blue-on-dark); }

/* ── BANNER (secondary page header) ── */
.vertical-banner {
  position: relative;
  padding-top: var(--nav-h);
  display: flex;
  align-items: stretch;
  overflow: hidden;
  background: var(--bg-inverse);
  transition: background 0.4s var(--ease-smooth);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

[data-theme="light"] .vertical-banner {
  border-bottom-color: rgba(0, 0, 0, 0.06);
}

.vertical-hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% 40%, color-mix(in srgb, var(--vertical-accent) 14%, transparent) 0%, transparent 70%),
    radial-gradient(circle at 80% 20%, color-mix(in srgb, var(--vertical-accent-soft) 8%, transparent) 0%, transparent 40%);
}

[data-theme="light"] .vertical-hero-bg {
  background:
    radial-gradient(ellipse 80% 60% at 50% 40%, color-mix(in srgb, var(--vertical-accent) 10%, transparent) 0%, transparent 70%),
    radial-gradient(circle at 80% 20%, color-mix(in srgb, var(--vertical-accent-soft) 5%, transparent) 0%, transparent 40%);
}

.vertical-hero-grid-lines {
  position: absolute;
  inset: 0;
  z-index: 1;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, rgba(0, 0, 0, 0.5) 0%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, rgba(0, 0, 0, 0.5) 0%, transparent 70%);
}

[data-theme="light"] .vertical-hero-grid-lines {
  background-image:
    linear-gradient(rgba(0, 0, 0, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 0, 0, 0.04) 1px, transparent 1px);
}

.vertical-hero-content {
  position: relative;
  z-index: 3;
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 3rem var(--container-pad) 2.75rem;
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}

/* ── Main banner content ── */
.vertical-banner-main {
  display: flex;
  flex-direction: column;
  max-width: 820px;
}

.vertical-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--vertical-accent-soft);
  margin-bottom: 1.5rem;
  width: fit-content;
}

.vertical-tag-dot {
  width: 8px;
  height: 8px;
  border-radius: var(--radius-circle);
  background: var(--vertical-accent);
  box-shadow: 0 0 0 0 var(--vertical-accent);
  animation: verticalPulse 2s ease-out infinite;
}

@keyframes verticalPulse {
  0%   { box-shadow: 0 0 0 0 color-mix(in srgb, var(--vertical-accent) 60%, transparent); }
  70%  { box-shadow: 0 0 0 10px transparent; }
  100% { box-shadow: 0 0 0 0 transparent; }
}

.vertical-hero-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 3.6vw, 3.5rem);
  font-weight: var(--fw-heavy);
  line-height: 1.08;
  letter-spacing: -0.025em;
  color: var(--text-on-inverse);
  margin-bottom: 1.25rem;
}
.vertical-hero-title em { font-style: normal; color: var(--vertical-accent-soft); }

.vertical-hero-sub {
  color: var(--text-on-inverse-faint);
  max-width: 640px;
  line-height: 1.65;
  font-size: var(--fs-md);
  font-weight: var(--fw-regular);
  margin-bottom: 2rem;
}

.vertical-hero-actions {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}

/* ── Capability strip (textual) ── */
.vertical-banner-caps {
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

[data-theme="light"] .vertical-banner-caps {
  border-top-color: rgba(0, 0, 0, 0.08);
}

.vertical-banner-caps-label {
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-on-inverse-faint);
  margin-bottom: 1rem;
}

.vertical-banner-caps-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.75rem;
}

.vertical-cap {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.9rem 1.1rem;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-left: 2px solid var(--vertical-accent);
  border-radius: var(--radius-md);
  font-size: var(--fs-base);
  font-weight: var(--fw-semibold);
  color: var(--text-on-inverse);
  transition: border-color 0.36s var(--ease-smooth), background 0.36s;
}
.vertical-cap:hover {
  background: rgba(255, 255, 255, 0.07);
  border-color: rgba(255, 255, 255, 0.18);
  border-left-color: var(--vertical-accent-soft);
}

.vertical-cap-num {
  font-family: var(--font-display);
  font-size: var(--fs-xs);
  font-weight: var(--fw-heavy);
  color: var(--vertical-accent-soft);
  letter-spacing: 0.05em;
  opacity: 0.85;
}

/* ── Stats strip (numeric) ── */
.vertical-banner-stats {
  list-style: none;
  margin: 0;
  padding: 2rem 0 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

[data-theme="light"] .vertical-banner-stats {
  border-top-color: rgba(0, 0, 0, 0.08);
}

.vertical-stat {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  padding: 1rem 1.25rem;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: border-color 0.36s var(--ease-smooth), background 0.36s;
}
.vertical-stat:hover {
  border-color: rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.08);
}

.vertical-stat--accent {
  border-color: color-mix(in srgb, var(--vertical-accent) 40%, transparent);
  background: color-mix(in srgb, var(--vertical-accent) 8%, transparent);
}

.vertical-stat-val {
  font-family: var(--font-display);
  font-size: var(--fs-2xl);
  font-weight: var(--fw-heavy);
  color: var(--text-on-inverse);
  letter-spacing: -0.03em;
  line-height: 1;
  margin-bottom: 0.3rem;
}
.vertical-stat-val span { color: var(--vertical-accent-soft); }

.vertical-stat-lbl {
  font-size: var(--fs-xs);
  color: var(--text-on-inverse-faint);
  font-weight: var(--fw-medium);
  letter-spacing: 0.02em;
}

/* ── Overview grid (2×2 cards with accent left border) ── */
/* Section padding inherited from global `section` rule in style.css. */

.vertical-section-header {
  max-width: 820px;
  margin-bottom: 3.5rem;
}
.vertical-section-header--centered {
  text-align: center;
  margin-left: auto;
  margin-right: auto;
}
.vertical-section-header--centered .section-sub {
  margin-left: auto;
  margin-right: auto;
}

.vertical-overview-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.vertical-overview-card {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1.5rem;
  align-items: start;
  padding: 1.75rem 2rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-left: 4px solid var(--vertical-accent);
  border-radius: var(--radius-md);
  transition: border-color 0.36s var(--ease-smooth), transform 0.36s var(--ease-smooth), box-shadow 0.36s var(--ease-smooth);
}
.vertical-overview-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--card-shadow);
  border-left-color: var(--vertical-accent-soft);
}

.vertical-overview-num {
  font-family: var(--font-display);
  font-size: var(--fs-3xl);
  font-weight: var(--fw-heavy);
  color: var(--vertical-accent);
  letter-spacing: -0.02em;
  line-height: 1;
}

.vertical-overview-body {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.vertical-overview-title {
  font-family: var(--font-display);
  font-size: var(--fs-lg);
  font-weight: var(--fw-bold);
  color: var(--text-primary);
  letter-spacing: -0.015em;
  margin: 0;
}

.vertical-overview-desc {
  font-size: var(--fs-base);
  color: var(--text-secondary);
  line-height: 1.55;
  margin: 0;
}

/* ── RESPONSIVE ── */
@media (max-width: 1024px) {
  .vertical-banner-caps-list { grid-template-columns: repeat(2, 1fr); }
  .vertical-banner-stats { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 720px) {
  .vertical-banner-stats { grid-template-columns: 1fr; }
  .vertical-overview-grid { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
  .vertical-banner-caps-list { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .vertical-hero-content { padding: 2rem var(--container-pad) 2rem; gap: 2rem; }
  .vertical-hero-title { font-size: var(--fs-4xl); }
  .vertical-hero-actions { flex-direction: column; align-items: stretch; }
  .vertical-overview-card { grid-template-columns: 1fr; padding: 1.5rem; }
}

@media (prefers-reduced-motion: reduce) {
  .vertical-tag-dot { animation: none; }
  .vertical-overview-card { transition: none; }
}