/* =========================================================
   Project case-study pages (Pro) — loaded after style.css
   ========================================================= */
.proj-nav .nav-pill { max-width: 760px; }
.back-link { display: inline-flex; align-items: center; gap: .5rem; color: var(--text-dim); font-weight: 600; font-size: .92rem; transition: .2s; }
.back-link:hover { color: var(--accent); gap: .75rem; }

/* Hero */
.case-hero { position: relative; overflow: hidden; padding: 9rem 0 3.5rem; border-bottom: 1px solid var(--border); }
.case-hero .aurora { z-index: 0; }
.case-hero .container { position: relative; z-index: 2; }
.case-cat { font-family: var(--font-mono); font-size: .82rem; color: var(--accent); }
.case-title { font-size: clamp(2.2rem, 6vw, 4rem); font-weight: 600; letter-spacing: -0.02em; margin: .6rem 0 1rem; max-width: 18ch; }
.case-tagline { font-size: 1.2rem; color: var(--text-dim); max-width: 60ch; margin-bottom: 1.8rem; }
.case-meta { display: flex; flex-wrap: wrap; gap: 1.8rem; margin-bottom: 1.8rem; }
.case-meta dt { font-family: var(--font-mono); font-size: .7rem; color: var(--text-faint); text-transform: uppercase; letter-spacing: .06em; }
.case-meta dd { margin: .2rem 0 0; font-weight: 700; }
.case-links { display: flex; gap: .7rem; flex-wrap: wrap; }
.note-pill { display: inline-flex; align-items: center; padding: .55rem 1rem; border-radius: 999px; border: 1px solid var(--border-2); color: var(--text-dim); font-size: .85rem; background: var(--glass); }
.case-stack { display: flex; flex-wrap: wrap; gap: .5rem; margin-top: 1.8rem; }
.case-stack span { font-family: var(--font-mono); font-size: .78rem; padding: .3rem .7rem; border-radius: 9px; background: var(--glass); color: var(--text-dim); border: 1px solid var(--border); }

/* Body */
.case { position: relative; z-index: 2; padding: 4rem 0 6rem; }
.case-grid { display: grid; grid-template-columns: 220px 1fr; gap: 3.5rem; align-items: start; }
.toc { position: sticky; top: 110px; }
.toc h4 { font-family: var(--font-mono); font-size: .72rem; text-transform: uppercase; letter-spacing: .06em; color: var(--text-faint); margin-bottom: 1rem; }
.toc a { display: block; padding: .42rem 0 .42rem .9rem; color: var(--text-dim); font-size: .9rem; border-left: 2px solid var(--border); transition: .2s; }
.toc a:hover, .toc a.is-active { color: var(--accent); border-left-color: var(--accent); }

.case-content { max-width: 760px; }
.block { margin-bottom: 3rem; scroll-margin-top: 110px; }
.block h2 { font-size: 1.7rem; margin-bottom: 1rem; display: flex; align-items: center; gap: .65rem; }
.block h2::before { content: ""; width: 9px; height: 26px; border-radius: 5px; background: var(--accent-grad); }
.block p { color: var(--text-dim); font-size: 1.05rem; }
.block strong { color: var(--text); }
.c-list { display: grid; gap: .7rem; margin: 1rem 0; }
.c-list li { position: relative; padding-left: 1.5rem; color: var(--text-dim); }
.c-list li::before { content: "▹"; position: absolute; left: 0; color: var(--accent); }
.c-list strong { color: var(--text); }

/* Metrics */
.metrics { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 1rem; margin: 1.4rem 0; }
.metric { background: var(--glass); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 1.3rem; text-align: center; }
.metric b { display: block; font-family: var(--font-display); font-size: 1.9rem; font-weight: 600; background: var(--accent-grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.metric span { font-size: .82rem; color: var(--text-dim); }

/* Architecture flow */
.arch { background: var(--glass); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.8rem; margin: 1.4rem 0; }
.flow { display: flex; align-items: stretch; gap: 0; flex-wrap: wrap; justify-content: center; }
.node { flex: 1; min-width: 120px; background: var(--glass-2); border: 1px solid var(--border-2); border-radius: var(--radius-sm); padding: 1rem .8rem; text-align: center; }
.node .ni { font-size: 1.5rem; }
.node .nt { display: block; font-weight: 700; font-size: .92rem; margin-top: .3rem; }
.node .ns { display: block; font-family: var(--font-mono); font-size: .7rem; color: var(--text-faint); margin-top: .2rem; }
.flow-arrow { display: grid; place-items: center; color: var(--accent); font-size: 1.4rem; padding: 0 .4rem; }
.arch-cap { text-align: center; font-size: .85rem; color: var(--text-faint); font-family: var(--font-mono); margin-top: 1.2rem; }
@media (max-width: 640px) { .flow { flex-direction: column; } .flow-arrow { transform: rotate(90deg); padding: .3rem 0; } }

/* Callout */
.callout { border-left: 3px solid var(--accent); background: color-mix(in srgb, var(--accent) 8%, transparent); border-radius: 0 var(--radius-sm) var(--radius-sm) 0; padding: 1rem 1.3rem; margin: 1.4rem 0; }
.callout p { margin: 0; color: var(--text); }

/* Demo video embed (responsive 16:9) */
.media-embed { position: relative; width: 100%; aspect-ratio: 16 / 9; margin: 1.4rem 0; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--border); background: var(--glass); }
.media-embed iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.media-placeholder { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: .8rem; height: 100%; text-align: center; padding: 1.5rem; }
.media-placeholder .mp-icon { font-size: 2.6rem; }
.media-placeholder .mp-title { font-family: var(--font-display); font-weight: 600; font-size: 1.2rem; }
.media-placeholder .mp-sub { color: var(--text-faint); font-family: var(--font-mono); font-size: .8rem; max-width: 40ch; }
.media-cap { text-align: center; font-size: .85rem; color: var(--text-faint); font-family: var(--font-mono); margin-top: .8rem; }

/* Next */
.case-next { position: relative; z-index: 2; border-top: 1px solid var(--border); padding: 2.5rem 0; }
.case-next a { display: flex; align-items: center; justify-content: space-between; gap: 1rem; background: var(--glass); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.5rem 1.9rem; transition: .25s; }
.case-next a:hover { border-color: var(--accent); transform: translateY(-3px); }
.cn-label { font-family: var(--font-mono); font-size: .76rem; color: var(--text-faint); }
.cn-title { font-family: var(--font-display); font-weight: 600; font-size: 1.25rem; }
.cn-arrow { font-size: 1.6rem; color: var(--accent); }

@media (max-width: 900px) { .case-grid { grid-template-columns: 1fr; gap: 1.5rem; } .toc { display: none; } }