/* =====================================================
   NAV VARIATIONS — A (left rail) · B (top bar) · C (hybrid)
   Shared primitives first, then per-variant shells.
   ===================================================== */

/* Reset prior shell padding so each variant owns its layout.
 *
 * The handoff reference ships three variant shells (.shell-a /
 * .shell-b / .shell-c) and expected .fop-shell to be hidden so the
 * variants wouldn't double-render alongside the legacy container.
 *
 * In Cider production, .fop-shell IS the container (see
 * src/shell/boot.js main()), so hiding it blanks every logged-in
 * page. The original rule
 *     .fop-shell { display: none !important; }
 * is removed here; the .shell-a / .shell-b / .shell-c primitives
 * below remain intact for the future shell-c refactor turn. */

/* ---------- SHARED ---------- */

/* Cider mark — inline SVG referenced via <use href="#cider-mark"/>.
   Variant shells size it via .a-brand .brand-mark / .b-brand .brand-mark / .c-brand .brand-mark. */
.brand-mark{display:block;flex:none;border-radius:3px;overflow:hidden;}

.phase-chip{
  font-family:var(--font-display);font-weight:600;font-size:10px;letter-spacing:.14em;
  color:#fff;background:rgba(229,30,37,.28);border:1px solid rgba(229,30,37,.4);
  padding:4px 10px;border-radius:2px;text-transform:uppercase;white-space:nowrap;
}
.user-chip{display:flex;align-items:center;gap:8px;color:#fff;}
.user-ava{
  width:30px;height:30px;border-radius:6px;background:var(--af-red);
  display:flex;align-items:center;justify-content:center;color:#fff;
  font-family:var(--font-display);font-weight:700;font-size:11px;letter-spacing:.04em;
}
.user-meta .user-name{font-size:12px;font-weight:600;color:#fff;line-height:1.2;}
.user-meta .user-role{font-size:10px;color:rgba(255,255,255,.6);letter-spacing:.06em;text-transform:uppercase;line-height:1.2;}

.urgency{
  display:inline-flex;align-items:center;justify-content:center;min-width:18px;height:18px;padding:0 5px;
  background:var(--af-red);color:#fff;font-family:var(--font-display);font-size:10px;font-weight:700;
  border-radius:9px;letter-spacing:.02em;line-height:1;
}
.urgency.amber{background:#c27500;}
.urgency.red{background:var(--af-red);}

/* System switcher */
.sys-switch{position:relative;}
.sys-trigger{
  display:flex;align-items:center;gap:8px;background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.14);color:#fff;padding:6px 10px;border-radius:3px;
  font-family:var(--font-display);font-weight:600;font-size:11px;letter-spacing:.08em;
  text-transform:uppercase;cursor:pointer;line-height:1.2;
}
.sys-trigger:hover{background:rgba(255,255,255,.14);}
.sys-trigger .sys-sub{font-family:var(--font-body);font-weight:500;font-size:10px;letter-spacing:.04em;color:rgba(255,255,255,.6);text-transform:none;}
.sys-trigger .sys-caret{font-size:9px;opacity:.7;}
.sys-switch.compact .sys-trigger{padding:5px 8px;font-size:10px;}
.sys-menu{
  position:absolute;top:calc(100% + 6px);left:0;min-width:260px;background:var(--bg-1);border:1px solid var(--border-1);
  border-top:2px solid var(--af-red);box-shadow:0 12px 40px rgba(0,0,0,.2);border-radius:2px;z-index:9000;
  padding:8px 0;
}
.sys-menu-head{
  padding:8px 14px 4px;font-family:var(--font-display);font-size:10px;font-weight:700;
  letter-spacing:.14em;text-transform:uppercase;color:var(--fg-2);
}
.sys-menu-item{display:flex;justify-content:space-between;align-items:center;padding:10px 14px;cursor:pointer;border-left:3px solid transparent;}
.sys-menu-item:hover{background:var(--bg-2);}
.sys-menu-item.active{border-left-color:var(--af-red);background:var(--bg-2);}
.sys-menu-name{font-family:var(--font-display);font-weight:700;font-size:13px;color:var(--af-navy);}
.sys-menu-host{font-family:var(--font-mono);font-size:10px;color:var(--fg-2);margin-top:2px;}
.sys-menu-chip{font-family:var(--font-display);font-size:9px;font-weight:700;letter-spacing:.1em;color:#fff;background:var(--af-red);padding:3px 7px;border-radius:2px;}

/* Shared subnav (Var A + B) */
.subnav{display:flex;gap:0;border-bottom:1px solid var(--border-1);background:var(--bg-1);overflow-x:auto;}
.subnav-item{
  display:flex;align-items:center;gap:8px;padding:12px 18px;
  font-family:var(--font-display);font-weight:600;font-size:12px;letter-spacing:.08em;
  text-transform:uppercase;color:var(--fg-2);text-decoration:none;white-space:nowrap;
  border-bottom:2px solid transparent;margin-bottom:-1px;
}
.subnav-item:hover{color:var(--af-navy);background:var(--bg-2);}
.subnav-item.active{color:var(--af-red);border-bottom-color:var(--af-red);background:var(--bg-1);}
.subnav-item.stub{opacity:.5;cursor:not-allowed;}

/* ==========================================================
   VARIATION A — LEFT RAIL
   ========================================================== */
.shell-a{display:grid;grid-template-columns:280px 1fr;grid-template-rows:64px auto 1fr;grid-template-areas:"top top" "eoc eoc" "rail main";height:100vh;background:var(--bg-2);}
.shell-a > .eoc-bar{grid-area:eoc;}
.a-top{grid-area:top;display:flex;align-items:center;gap:20px;background:var(--af-navy);color:#fff;padding:0 20px;border-bottom:3px solid var(--af-red);}
.a-brand{display:flex;align-items:center;gap:14px;padding-right:18px;border-right:1px solid rgba(255,255,255,.14);}
.a-brand img,.a-brand .brand-mark{height:30px;width:30px;}
.a-wordmark{font-family:var(--font-display);font-weight:700;font-size:20px;letter-spacing:.14em;color:#fff;line-height:1;}
.a-tenant{font-size:10px;letter-spacing:.06em;color:rgba(255,255,255,.6);margin-top:3px;}
.a-search{flex:1;max-width:480px;}
.a-search input{
  width:100%;padding:8px 12px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);
  color:#fff;font-family:var(--font-body);font-size:12px;border-radius:3px;
}
.a-search input::placeholder{color:rgba(255,255,255,.55);}
.a-search input:focus{outline:none;border-color:var(--af-red);background:rgba(255,255,255,.14);}
.a-right{margin-left:auto;display:flex;align-items:center;gap:16px;}

.a-rail{grid-area:rail;background:var(--bg-1);border-right:1px solid var(--border-1);overflow-y:auto;}
.a-rail-inner{padding:14px 0;}
.a-group{margin-bottom:4px;}
.a-group-head{
  width:100%;display:flex;align-items:center;gap:10px;padding:8px 18px;background:transparent;border:none;cursor:pointer;
  font-family:var(--font-display);font-size:10px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--fg-2);font-weight:700;
}
.a-group-head:hover{color:var(--af-navy);}
.a-group-icon{font-size:13px;color:var(--af-red);}
.a-group-label{flex:1;text-align:left;}
.a-group-caret{font-size:8px;color:var(--fg-3);transition:transform .15s;}
.a-group-caret.open{transform:rotate(180deg);}
.a-item{
  display:flex;align-items:center;gap:8px;padding:8px 18px 8px 44px;font-size:13px;
  color:var(--fg-1);text-decoration:none;border-left:3px solid transparent;position:relative;
}
.a-item:hover{background:var(--bg-2);color:var(--af-navy);}
.a-item.active{background:var(--bg-2);color:var(--af-red);border-left-color:var(--af-red);font-weight:600;}
.a-item.stub{opacity:.55;cursor:not-allowed;}
.a-item-label{flex:1;}
.a-ext,.a-soon,.a-phase{font-family:var(--font-display);font-size:9px;font-weight:700;letter-spacing:.1em;color:var(--fg-3);background:var(--bg-2);padding:2px 5px;border-radius:2px;text-transform:uppercase;}
.a-ext{color:var(--af-navy);}
.a-soon{background:rgba(229,30,37,.1);color:var(--af-red);}

.a-main{grid-area:main;overflow-y:auto;}
.a-main > .page-fade{padding:24px 28px 40px;}
.a-sub{background:var(--bg-1);border-bottom:1px solid var(--border-1);}
.a-crumbs{padding:8px 28px 0;font-family:var(--font-body);font-size:11px;color:var(--fg-2);}
.a-crumb-mod{color:var(--af-red);font-family:var(--font-display);font-weight:700;text-transform:uppercase;letter-spacing:.1em;}
.a-crumb-sep{margin:0 8px;color:var(--fg-3);}
.a-crumb-page{color:var(--fg-1);}

/* ==========================================================
   VARIATION B — TOP BAR MEGA-MENU
   ========================================================== */
.shell-b{display:grid;grid-template-rows:56px auto auto 1fr;height:100vh;background:var(--bg-2);}
.b-top{display:flex;align-items:center;gap:16px;background:var(--af-navy);color:#fff;padding:0 20px;border-bottom:3px solid var(--af-red);}
.b-brand{display:flex;align-items:center;gap:10px;padding-right:14px;border-right:1px solid rgba(255,255,255,.14);}
.b-brand img,.b-brand .brand-mark{height:26px;width:26px;}
.b-wordmark{font-family:var(--font-display);font-weight:700;font-size:17px;letter-spacing:.14em;color:#fff;}

.b-groups{display:flex;align-items:stretch;gap:2px;flex:1;}
.b-group{position:relative;}
.b-group-btn{
  display:flex;align-items:center;gap:8px;background:transparent;border:none;color:rgba(255,255,255,.72);
  padding:8px 14px;height:100%;cursor:pointer;font-family:var(--font-display);font-weight:600;
  font-size:12px;letter-spacing:.1em;text-transform:uppercase;border-bottom:2px solid transparent;
}
.b-group-btn:hover{color:#fff;background:rgba(255,255,255,.06);}
.b-group.active .b-group-btn{color:#fff;border-bottom-color:var(--af-red);}
.b-group.open .b-group-btn{background:rgba(255,255,255,.08);color:#fff;}
.b-dot{width:7px;height:7px;border-radius:50%;background:var(--af-red);display:inline-block;}
.b-mega{
  position:absolute;top:100%;left:0;background:var(--bg-1);min-width:460px;
  border:1px solid var(--border-1);border-top:3px solid var(--af-red);
  box-shadow:0 20px 60px rgba(0,0,0,.3);z-index:9000;padding:8px;
}
.b-mega-head{font-family:var(--font-display);font-weight:700;font-size:10px;letter-spacing:.14em;text-transform:uppercase;color:var(--af-red);padding:6px 10px 10px;}
.b-mega-grid{display:grid;grid-template-columns:1fr 1fr;gap:2px;}
.b-mega-item{padding:10px 12px;border-radius:2px;text-decoration:none;color:var(--fg-1);border:1px solid transparent;}
.b-mega-item:hover{background:var(--bg-2);border-color:var(--border-1);}
.b-mega-item.active{background:var(--bg-2);border-color:var(--af-red);}
.b-mega-item.stub{opacity:.6;cursor:not-allowed;}
.b-mi-row{display:flex;justify-content:space-between;align-items:center;gap:8px;}
.b-mi-label{font-family:var(--font-display);font-weight:600;font-size:13px;color:var(--af-navy);letter-spacing:.02em;}
.b-mi-meta{font-size:10.5px;color:var(--fg-2);margin-top:3px;letter-spacing:.02em;}

.b-right{margin-left:auto;display:flex;align-items:center;gap:14px;}
.b-search-btn{
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);color:rgba(255,255,255,.72);
  padding:6px 12px;font-family:var(--font-mono);font-size:11px;cursor:pointer;border-radius:3px;
  letter-spacing:.04em;
}
.b-search-btn:hover{color:#fff;background:rgba(255,255,255,.14);}
.b-sub{background:var(--bg-1);border-bottom:1px solid var(--border-1);}
.b-main{overflow-y:auto;}
.b-main > .page-fade{padding:24px 28px 40px;}

/* ==========================================================
   VARIATION C — HYBRID ICON RAIL + SECONDARY NAV
   ========================================================== */
.shell-c{display:grid;grid-template-columns:76px 240px 1fr;grid-template-rows:56px auto 1fr;
  grid-template-areas:"top top top" "eoc eoc eoc" "rail secondary main";height:100vh;background:var(--bg-2);
  transition:grid-template-columns .22s ease;}
.shell-c.collapsed{grid-template-columns:76px 0 1fr;}
.shell-c > .eoc-bar{grid-area:eoc;}
.shell-c.collapsed .c-secondary{transform:translateX(-100%);pointer-events:none;opacity:0;}
.c-top{grid-area:top;display:flex;align-items:center;gap:16px;background:var(--af-navy);color:#fff;padding:0 16px;border-bottom:3px solid var(--af-red);}
.c-brand{display:flex;align-items:center;gap:10px;}
.c-brand img,.c-brand .brand-mark{height:26px;width:26px;}
.c-wordmark{font-family:var(--font-display);font-weight:700;font-size:17px;letter-spacing:.14em;color:#fff;}
.c-sep{width:1px;height:22px;background:rgba(255,255,255,.15);margin:0 6px;}
.c-search{
  flex:1;max-width:600px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);
  color:rgba(255,255,255,.68);text-align:left;padding:8px 14px;font-family:var(--font-body);
  font-size:12px;border-radius:3px;cursor:text;display:flex;align-items:center;gap:10px;
}
.c-search kbd{margin-left:auto;font-family:var(--font-mono);font-size:10px;background:rgba(255,255,255,.08);
  padding:2px 6px;border-radius:2px;border:1px solid rgba(255,255,255,.1);color:rgba(255,255,255,.6);}
.c-search:hover{background:rgba(255,255,255,.1);color:#fff;}
.c-right{margin-left:auto;display:flex;align-items:center;gap:14px;}

.c-rail{grid-area:rail;background:var(--af-navy);padding:12px 0;display:flex;flex-direction:column;gap:2px;overflow-y:auto;}
.c-rail-btn{
  position:relative;display:flex;flex-direction:column;align-items:center;gap:4px;padding:10px 0;
  background:transparent;border:none;color:rgba(255,255,255,.55);cursor:pointer;
  border-left:3px solid transparent;transition:all .1s;
}
.c-rail-btn:hover{color:#fff;background:rgba(255,255,255,.05);}
.c-rail-btn.active{color:#fff;border-left-color:var(--af-red);background:rgba(229,30,37,.12);}
.c-rail-icon{font-size:20px;line-height:1;color:var(--af-red);}
.c-rail-btn:not(.active) .c-rail-icon{color:rgba(255,255,255,.5);}
.c-rail-glyph{font-family:var(--font-display);font-size:9px;letter-spacing:.1em;text-transform:uppercase;font-weight:600;}
.c-rail-dot{
  position:absolute;top:8px;right:10px;background:var(--af-red);color:#fff;
  font-family:var(--font-display);font-size:9px;font-weight:700;
  min-width:16px;height:16px;padding:0 4px;border-radius:8px;
  display:flex;align-items:center;justify-content:center;line-height:1;
}

.c-secondary{grid-area:secondary;background:var(--bg-1);border-right:1px solid var(--border-1);overflow-y:auto;
  transition:transform .22s ease, opacity .15s ease;overflow-x:hidden;}
.c-sec-head{display:flex;align-items:center;gap:12px;padding:18px 18px 14px;border-bottom:1px solid var(--border-1);position:relative;}
.c-sec-collapse{
  position:absolute;top:50%;right:10px;transform:translateY(-50%);
  width:26px;height:26px;background:var(--bg-2);border:1px solid var(--border-1);
  color:var(--fg-2);cursor:pointer;border-radius:3px;font-size:12px;line-height:1;
  display:flex;align-items:center;justify-content:center;
}
.c-sec-collapse:hover{color:var(--af-red);border-color:var(--af-red);}
.c-expand-btn{
  position:absolute;top:72px;left:76px;width:22px;height:44px;background:var(--bg-1);
  border:1px solid var(--border-1);border-left:none;color:var(--fg-2);cursor:pointer;
  border-radius:0 3px 3px 0;font-size:11px;line-height:1;z-index:10;
  display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow-sm);
}
.c-expand-btn:hover{color:var(--af-red);border-color:var(--af-red);}
.c-sec-icon{
  width:36px;height:36px;background:var(--bg-2);border:1px solid var(--border-1);
  display:flex;align-items:center;justify-content:center;color:var(--af-red);font-size:18px;border-radius:3px;
}
.c-sec-title{font-family:var(--font-display);font-weight:700;font-size:16px;letter-spacing:.06em;text-transform:uppercase;color:var(--af-navy);}
.c-sec-sub{font-size:10px;color:var(--fg-2);letter-spacing:.06em;text-transform:uppercase;margin-top:2px;}
.c-sec-items{padding:8px 0;}
.c-sec-item{
  display:flex;align-items:center;gap:8px;padding:9px 18px;font-size:13px;color:var(--fg-1);
  text-decoration:none;border-left:3px solid transparent;
}
.c-sec-item:hover{background:var(--bg-2);color:var(--af-navy);}
.c-sec-item.active{background:var(--bg-2);color:var(--af-red);border-left-color:var(--af-red);font-weight:600;}
.c-sec-item.stub{opacity:.55;cursor:not-allowed;}
.c-sec-label{flex:1;}
.c-ext,.c-soon{font-family:var(--font-display);font-size:9px;font-weight:700;letter-spacing:.1em;
  color:var(--af-red);background:rgba(229,30,37,.1);padding:2px 5px;border-radius:2px;text-transform:uppercase;}

.c-main{grid-area:main;overflow-y:auto;}
.c-main > .page-fade{padding:24px 28px 40px;}