/* ==========================================================================
   Risos Shared — Full-Width CTA Gradient Banner
   Derived from: tokens.css --grad-app-accent + --grad-text-deep
                 + landing.html .cta-box pattern (lines 501-565)
   Created: 28 Mei 2026

   Structure:
     <section class="rs-cta">
       <div class="rs-cta__inner">
         <div class="rs-cta__text">
           <h2 class="rs-cta__title">Heading</h2>
           <p class="rs-cta__sub">Sub-text...</p>
         </div>
         <div class="rs-cta__actions">
           <a class="btn btn-primary btn-lg" href="...">Primary</a>
           <a class="btn btn-ghost btn-lg" href="...">Secondary</a>
         </div>
       </div>
     </section>

   Variants:
     .rs-cta             default navy-cyan gradient
     .rs-cta--invert     light background w/ navy text
     .rs-cta--narrow     centered narrow text-only

   Depends: tokens.css, button.css
   ========================================================================== */

.rs-cta {
  position: relative;
  padding: clamp(56px, 8vw, 96px) var(--container-pad, clamp(1.25rem, 4vw, 2.5rem));
  background: linear-gradient(135deg, var(--c-brand-deep, #0c1c3d) 0%, var(--c-brand, #1e40af) 60%, var(--c-primary-deep, #2563eb) 100%);
  color: var(--c-text-on-dark, #f1f5f9);
  overflow: hidden;
}

/* Subtle radial accent */
.rs-cta::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 60% at 100% 0%, color-mix(in oklab, var(--c-accent-bright, #22d3ee) 20%, transparent), transparent 60%);
  pointer-events: none;
}

.rs-cta__inner {
  position: relative;
  max-width: var(--container, 1240px);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 36px;
  flex-wrap: wrap;
}

.rs-cta__text {
  flex: 1;
  min-width: 280px;
  max-width: 720px;
}

.rs-cta__title {
  font-family: var(--ff-display, 'Playfair Display', serif);
  font-weight: 500;
  font-size: var(--fs-h2, clamp(2rem, 1.4rem + 2.4vw, 3.6rem));
  line-height: 1.08;
  letter-spacing: -0.022em;
  margin: 0 0 14px;
  color: var(--c-text-on-dark, #f1f5f9);
}
.rs-cta__title em {
  font-style: italic;
  color: var(--c-accent-bright, #22d3ee);
}

.rs-cta__sub {
  font-family: var(--ff-body, system-ui, sans-serif);
  font-size: var(--fs-lede, 1.1rem);
  line-height: 1.55;
  color: var(--c-text-on-dark-muted, #cbd5e1);
  margin: 0;
  max-width: 560px;
}

.rs-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  flex-shrink: 0;
}

/* On dark bg, the .btn-ghost border needs to be lighter */
.rs-cta .btn-ghost,
.rs-cta .btn-outline {
  border-color: var(--c-line-dark-2, rgba(255,255,255,0.16));
  color: var(--c-text-on-dark, #f1f5f9);
}
.rs-cta .btn-ghost:hover:not(:disabled),
.rs-cta .btn-outline:hover:not(:disabled) {
  background: rgba(255,255,255,0.08);
  border-color: rgba(255,255,255,0.30);
  color: #fff;
}

/* ── Modifier: invert (light bg) ───────────────────────────────────── */
.rs-cta--invert {
  background: var(--bg-elev, #ffffff);
  color: var(--txt, var(--text-primary, #0f172a));
  border-top: 1px solid var(--line, var(--border-default, #e2e8f0));
  border-bottom: 1px solid var(--line, var(--border-default, #e2e8f0));
}
.rs-cta--invert::before { display: none; }
.rs-cta--invert .rs-cta__title { color: var(--txt, var(--text-primary, #0f172a)); }
.rs-cta--invert .rs-cta__title em {
  background: var(--grad-text, linear-gradient(120deg, #1e40af, #06b6d4));
  -webkit-background-clip: text; background-clip: text;
  color: transparent;
}
.rs-cta--invert .rs-cta__sub { color: var(--txt-muted, var(--text-muted, #475569)); }

/* ── Modifier: narrow centered ─────────────────────────────────────── */
.rs-cta--narrow .rs-cta__inner {
  flex-direction: column;
  text-align: center;
  align-items: center;
  max-width: 760px;
}
.rs-cta--narrow .rs-cta__sub { margin-left: auto; margin-right: auto; }

@media (max-width: 720px) {
  .rs-cta__inner { gap: 24px; }
  .rs-cta__actions { width: 100%; }
  .rs-cta__actions .btn { flex: 1; }
}