/* Shared shell for usecase_*.html — mirrors index.html theme */
:root {
  --p100: #F5F4FF; --p200: #EBE8FF; --p300: #B5AAFF; --p400: #8471FF;
  --p500: #6B55FF; --p600: #3A1CFF; --p700: #1C00D4; --p800: #13008E; --p900: #13085F;
  --n0: #FFFFFF; --n200: #F6F6F9; --n300: #ECECF1; --n400: #DADAE2;
  --n500: #C7C7D4; --n600: #A1A1B7; --n700: #6A6A8A; --n800: #31313F; --n1000: #14141A;
  --green: #14F174; --green-dark: #0A8A4A; --red: #FF4C4C; --amber: #FFB020;
  --shadow: 2px 4px 0 var(--n1000); --shadow-sm: 1px 2px 0 var(--n1000);
  --radius: 8px; --border: 2px solid var(--n1000);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: 'Inter', system-ui, -apple-system, sans-serif; color: var(--n1000); line-height: 1.6; background: var(--n0); }
a { color: var(--p600); text-decoration: none; }

nav { display: flex; justify-content: space-between; align-items: center; padding: 16px 5vw; border-bottom: var(--border); position: sticky; top: 0; background: var(--n0); z-index: 10; }
.logo { font-weight: 800; font-size: 20px; letter-spacing: -0.02em; }
.logo span { color: var(--p600); }
nav ul { list-style: none; display: flex; gap: 28px; align-items: center; }
nav ul a { color: var(--n700); font-size: 14px; font-weight: 500; }
nav ul a:hover { color: var(--n1000); }
.nav-cta { background: var(--p600); color: var(--n0) !important; padding: 8px 20px; border-radius: var(--radius); font-weight: 700; font-size: 14px; border: var(--border); box-shadow: var(--shadow-sm); }
.nav-dd { position: relative; cursor: pointer; }
.nav-dd-label { color: var(--n700); font-size: 14px; font-weight: 500; display: inline-flex; align-items: center; gap: 4px; }
.nav-dd-label::after { content: '\25BE'; font-size: 10px; margin-left: 2px; }
.nav-dd:hover .nav-dd-label { color: var(--n1000); }
.nav-dd-menu { position: absolute; top: calc(100% + 10px); left: 0; min-width: 300px; background: var(--n0); border: var(--border); border-radius: var(--radius); box-shadow: var(--shadow); padding: 8px; display: none; z-index: 20; }
.nav-dd:hover .nav-dd-menu, .nav-dd:focus-within .nav-dd-menu { display: block; }
.nav-dd-menu a { display: block; padding: 8px 12px; font-size: 13px; color: var(--n800); font-weight: 500; border-radius: 4px; }
.nav-dd-menu a:hover { background: var(--p100); color: var(--p700); }
.nav-dd-menu .nav-dd-group { font-size: 10px; font-weight: 700; text-transform: uppercase; color: var(--n600); padding: 8px 12px 4px; letter-spacing: 0.06em; }

section { padding: 80px 5vw; }
.container { max-width: 1100px; margin: 0 auto; }
.section-label { text-transform: uppercase; font-size: 12px; font-weight: 700; letter-spacing: 0.08em; color: var(--p600); margin-bottom: 8px; }
.section-title { font-size: clamp(24px, 4vw, 36px); font-weight: 800; letter-spacing: -0.02em; line-height: 1.2; margin-bottom: 12px; }

.btn { padding: 12px 28px; border-radius: var(--radius); font-weight: 700; font-size: 15px; display: inline-block; border: var(--border); cursor: pointer; }
.btn-primary { background: var(--p600); color: var(--n0); box-shadow: var(--shadow); }
.btn-primary:hover { background: var(--p500); }
.btn-secondary { background: var(--n0); color: var(--n1000); box-shadow: var(--shadow-sm); }
.btn-secondary:hover { background: var(--p100); }

/* Usecase hero */
.uc-hero { padding: 60px 5vw 40px; border-bottom: 1px solid var(--n300); background: var(--n200); }
.uc-hero .container { max-width: 900px; }
.uc-crumb { font-size: 12px; color: var(--n700); margin-bottom: 12px; }
.uc-crumb a { color: var(--p600); font-weight: 600; }
.uc-hero h1 { font-size: clamp(28px, 4.2vw, 44px); font-weight: 800; letter-spacing: -0.025em; line-height: 1.15; margin-bottom: 14px; }
.uc-hero .lead { font-size: 18px; color: var(--n700); max-width: 720px; }
.uc-badge { display: inline-block; font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em; color: var(--p700); background: var(--p100); border: 1.5px solid var(--p300); padding: 4px 10px; border-radius: 20px; margin-bottom: 10px; }

/* Problem / Solution / Impact cards */
.uc-triad { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 24px; }
.uc-triad-card { border: var(--border); border-radius: var(--radius); padding: 22px; background: var(--n0); box-shadow: var(--shadow-sm); }
.uc-triad-card h3 { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; color: var(--p600); margin-bottom: 10px; }
.uc-triad-card h3.red { color: var(--red); }
.uc-triad-card h3.green { color: var(--green-dark); }
.uc-triad-card p { font-size: 14px; color: var(--n800); line-height: 1.55; }
.uc-triad-card ul { list-style: none; font-size: 14px; margin-top: 4px; }
.uc-triad-card li { padding: 4px 0 4px 14px; position: relative; }
.uc-triad-card li::before { content: ''; position: absolute; left: 0; top: 11px; width: 6px; height: 6px; border-radius: 50%; background: var(--p500); }

/* Iframe demo frame */
.uc-demo { background: var(--n1000); padding: 60px 5vw; }
.uc-demo .container { max-width: 1240px; }
.uc-demo h2 { color: var(--n0); font-size: 28px; font-weight: 800; letter-spacing: -0.02em; margin-bottom: 8px; }
.uc-demo p.lead { color: var(--n500); font-size: 15px; margin-bottom: 24px; max-width: 640px; }
.uc-demo .frame-wrap { position: relative; border: var(--border); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); background: var(--n0); }
.uc-demo iframe { display: block; width: 100%; height: 780px; border: 0; }
.uc-demo .frame-toolbar { background: var(--n200); border-bottom: 2px solid var(--n1000); padding: 8px 14px; display: flex; align-items: center; gap: 8px; font-size: 11px; color: var(--n700); font-weight: 600; }
.uc-demo .frame-toolbar .dot { width: 10px; height: 10px; border-radius: 50%; }
.uc-demo .frame-toolbar .red-dot { background: #FF5F57; }
.uc-demo .frame-toolbar .amber-dot { background: #FEBC2E; }
.uc-demo .frame-toolbar .green-dot { background: #28C840; }
.uc-demo .frame-toolbar a { margin-left: auto; color: var(--p600); font-weight: 700; }

/* Details body */
.uc-body { padding: 70px 5vw; }
.uc-body .container { max-width: 900px; }
.uc-body h2 { font-size: 28px; font-weight: 800; letter-spacing: -0.02em; margin: 40px 0 12px; }
.uc-body h2:first-child { margin-top: 0; }
.uc-body p { font-size: 16px; color: var(--n800); line-height: 1.7; margin-bottom: 14px; }
.uc-body ul { margin: 10px 0 18px 22px; }
.uc-body li { margin-bottom: 6px; font-size: 15px; color: var(--n800); }
.uc-metric-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin: 24px 0; }
.uc-metric { border: var(--border); border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow-sm); }
.uc-metric .num { font-size: 32px; font-weight: 800; color: var(--p600); }
.uc-metric .lbl { font-size: 13px; color: var(--n700); font-weight: 600; }

/* CTA */
.uc-cta { background: var(--p600); color: var(--n0); padding: 80px 5vw; text-align: center; border-top: var(--border); }
.uc-cta h2 { font-size: 32px; font-weight: 800; letter-spacing: -0.02em; margin-bottom: 12px; }
.uc-cta p { font-size: 16px; color: var(--p100); max-width: 540px; margin: 0 auto 24px; }
.uc-cta .btn { background: var(--n0); color: var(--n1000); border-color: var(--n1000); box-shadow: var(--shadow); }
.uc-cta .btn:hover { background: var(--n200); }

footer { padding: 32px 5vw; text-align: center; font-size: 13px; color: var(--n700); border-top: 1px solid var(--n300); }
footer a { color: var(--p600); font-weight: 600; }

@media (max-width: 900px) {
  .uc-triad { grid-template-columns: 1fr; }
  .uc-metric-row { grid-template-columns: 1fr; }
  nav ul { gap: 18px; }
  .uc-demo iframe { height: 560px; }
}