/* ============================================================================
 * EPAL GROUP ERP  ·  css/layout.css
 * ----------------------------------------------------------------------------
 * THE APP SHELL LAYOUT — rail (company switcher), sidebar (modules), topbar,
 * and the scrollable content column. Matches the DOM built in core/app.js.
 * ==========================================================================*/

.app {
  display: grid;
  /* minmax(0,1fr) — NOT 1fr — so a wide child (e.g. a datatable) scrolls inside
     its own .table-wrap instead of expanding the layout past the viewport. */
  grid-template-columns: var(--rail-w) var(--sidebar-w) minmax(0, 1fr);
  height: 100vh;
  background:
    radial-gradient(1100px 560px at 84% -14%, color-mix(in srgb, var(--epal-royal, var(--accent)) 13%, transparent), transparent 56%),
    radial-gradient(820px 480px at -8% 8%, color-mix(in srgb, var(--epal-accent, var(--accent)) 15%, transparent), transparent 52%),
    radial-gradient(900px 900px at 50% 130%, color-mix(in srgb, var(--epal-deep, var(--bg-2)) 40%, transparent), transparent 60%),
    var(--bg);
}

/* ============================== RAIL ==================================== */
.rail {
  grid-column: 1;
  display: flex; flex-direction: column; align-items: center;
  padding: 12px 0; gap: 6px;
  background: color-mix(in srgb, var(--bg-2) 92%, black);
  border-right: 1px solid var(--border);
  z-index: 40;
}
.rail-brand {
  width: 42px; height: 42px; border-radius: 13px; margin-bottom: 8px;
  display: grid; place-items: center; cursor: pointer;
  background: linear-gradient(135deg, var(--gold), #0A2472);
  color: #dbe4f8; font-family: var(--font-display); font-weight: 800; font-size: 20px;   /* logo mark, not type — off the scale by design */
  box-shadow: 0 8px 22px -8px var(--gold); transition: transform var(--t) var(--e-out);
}
.rail-brand:hover { transform: rotate(-6deg) scale(1.05); }
.rail-list { display: flex; flex-direction: column; gap: 6px; flex: 1; }
.rail-co {
  position: relative; width: 46px; height: 46px; border-radius: 14px;
  display: grid; place-items: center; color: var(--text-dim);
  background: transparent; transition: all var(--t) var(--e-out);
}
.rail-co i { font-size: 20px; }
.rail-co::before {   /* the active accent bar */
  content: ''; position: absolute; left: -12px; top: 50%; transform: translateY(-50%) scaleY(0);
  width: 4px; height: 26px; border-radius: 0 4px 4px 0; background: var(--accent); transition: transform var(--t) var(--e-out);
}
.rail-co:hover { background: var(--surface-2); color: var(--text); transform: translateY(-1px); }
.rail-co.active { background: color-mix(in srgb, var(--accent) 16%, transparent); color: var(--accent); }
.rail-co.active::before { transform: translateY(-50%) scaleY(1); }
.rail-co.is-group { color: var(--gold); }
.rail-co.is-group.active { background: color-mix(in srgb, var(--gold) 18%, transparent); }
.rail-tip {
  position: absolute; left: 58px; top: 50%; transform: translateY(-50%) translateX(-6px);
  background: var(--surface-3); color: var(--text); padding: 6px 11px; border-radius: 9px;
  font-size: var(--fs-small); font-weight: 600; white-space: nowrap; box-shadow: var(--shadow);
  opacity: 0; pointer-events: none; transition: all var(--t) var(--e-out); z-index: 50; border: 1px solid var(--border);
}
.rail-co:hover .rail-tip { opacity: 1; transform: translateY(-50%) translateX(0); }
.rail-foot { display: flex; flex-direction: column; gap: 6px; }
.rail-icon { width: 44px; height: 44px; border-radius: 13px; display: grid; place-items: center; color: var(--text-dim); transition: all var(--t); }
.rail-icon:hover { background: var(--surface-2); color: var(--text); }
.rail-icon i { font-size: 18px; }

/* ============================= SIDEBAR ================================== */
.sidebar {
  grid-column: 2;
  display: flex; flex-direction: column;
  background: color-mix(in srgb, var(--surface) 65%, var(--bg));
  border-right: 1px solid var(--border); min-height: 0; z-index: 30;
}
/* Header padding scales with viewport height so it gives the nav more room on
   short windows / high zoom (part of the responsive-fit behaviour below). */
.sidebar-head { padding: clamp(9px, 1.5vh, 16px) 16px clamp(7px, 1.1vh, 12px); border-bottom: 1px solid var(--border); }
.side-co { display: flex; align-items: center; gap: 12px; }
.side-co-ico {
  width: clamp(30px, 4.4vh, 40px); height: clamp(30px, 4.4vh, 40px); border-radius: 12px; display: grid; place-items: center; flex: none;
  background: color-mix(in srgb, var(--accent) 16%, transparent); color: var(--accent); font-size: clamp(15px, 2.4vh, 19px);   /* icon glyph box, not type */
  border: 1px solid var(--border-accent);
}
.side-co-name { font-family: var(--font-display); font-weight: 700; font-size: clamp(14px, 1.95vh, var(--fs-lead)); line-height: 1.15; }
.side-co-tag { font-size: var(--fs-tiny); color: var(--text-mute); margin-top: 2px; }

/* RESPONSIVE-FIT NAV (owner directive): the menu must fit the window at 100% and
   keep fitting as you zoom — instead of a fixed-px list that overflows into a
   scrollbar on shorter windows. Item padding / font / icon / gap are sized in
   `vh` (a fraction of the viewport height) clamped between a readable min and the
   original size, so the whole menu scales down to fit and grows back on tall
   screens. overflow-y stays auto purely as a safety net for extreme cases. */
.nav { flex: 1; overflow-y: auto; padding: clamp(3px, 0.7vh, 10px) 10px clamp(6px, 1.2vh, 20px); display: flex; flex-direction: column; gap: clamp(2px, 0.3vh, 4px); }
/* overlay-style thin scrollbar (only the extreme case ever needs it) */
.nav { scrollbar-width: thin; scrollbar-color: var(--border-strong) transparent; }
.nav::-webkit-scrollbar { width: 4px; }
.nav-item {
  display: flex; align-items: center; gap: 10px; padding: clamp(7px, 1vh, 11px) 11px; border-radius: var(--r-sm);
  color: var(--text-dim); font-weight: 500; font-size: clamp(14.5px, 1.75vh, 15.5px); line-height: 1.2; position: relative; transition: all var(--t-fast);
}
.nav-item:hover { background: var(--surface-2); color: var(--text); }
.nav-item.active { background: color-mix(in srgb, var(--accent) 14%, transparent); color: var(--text); font-weight: 600; }
.nav-item.active .nav-ico { color: var(--accent); }
.nav-item.active::before { content:''; position:absolute; left:0; top:8px; bottom:8px; width:3px; border-radius:3px; background: var(--accent); }
/* group divider (config sectionEnd) — a soft, shadow-like hairline that fades at
   the ends, separating logical sidebar sections. Placed only between groups. */
.nav-divider { height:1px; flex:none; margin: clamp(5px, 1vh, 10px) 12px;
  background: linear-gradient(90deg, transparent, var(--border-strong), transparent);
  box-shadow: 0 1px 0 color-mix(in srgb, var(--text) 5%, transparent); }
.nav-ico { width: 22px; display: grid; place-items: center; color: var(--text-mute); font-size: clamp(13px, 1.7vh, 15px); transition: color var(--t-fast); }
.nav-label { flex: 1; }
.nav-badge { font-size: var(--fs-micro); font-weight: 800; padding: 2px 7px; border-radius: 999px;
  background: color-mix(in srgb, var(--accent) 20%, transparent); color: var(--accent); text-transform: uppercase; letter-spacing: .03em; }
.nav-lock { color: var(--text-mute); font-size: var(--fs-micro); }
.nav-caret {
  color: var(--text-mute); font-size: var(--fs-micro); cursor: pointer; flex: none;
  width: 22px; height: 22px; margin: -4px -4px -4px 0; border-radius: 6px;
  display: inline-flex; align-items: center; justify-content: center;
  transition: transform var(--t) var(--e-out), background var(--t-fast), color var(--t-fast);
}
.nav-caret:hover { background: color-mix(in srgb, var(--accent) 18%, transparent); color: var(--text); }
.nav-group.open > .nav-item .nav-caret { transform: rotate(90deg); }
.nav-subs { display: grid; grid-template-rows: 0fr; transition: grid-template-rows var(--t) var(--e-out); }
.nav-group.open .nav-subs { grid-template-rows: 1fr; }
.nav-subs-inner { overflow: hidden; min-height: 0; padding-left: 22px; }
.nav-sub {
  display: flex; align-items: center; gap: 10px; padding: clamp(5px, 0.7vh, 8px) 11px; border-radius: var(--r-xs);
  color: var(--text-mute); font-size: clamp(13.5px, 1.6vh, 14.5px); line-height: 1.2; transition: all var(--t-fast);
}
.nav-sub:hover { color: var(--text); background: var(--surface-2); }
.nav-sub.active { color: var(--accent); font-weight: 600; }
.nav-sub-dot { width: 5px; height: 5px; border-radius: 50%; background: currentColor; opacity: .55; flex: none; }
.nav-empty, .nav-sub.empty { color: var(--text-mute); font-size: var(--fs-tiny); padding: 14px 12px; }

/* user card at sidebar foot */
.user-card {
  display: flex; align-items: center; gap: 10px; padding: clamp(6px, 1vh, 12px) 14px; border-top: 1px solid var(--border);
  cursor: pointer; transition: background var(--t);
}
.user-card .avatar { width: clamp(28px, 3.9vh, 34px); height: clamp(28px, 3.9vh, 34px); }   /* shrink only the sidebar-foot avatar on short windows */
.user-card:hover { background: var(--surface-2); }
.avatar { width: 34px; height: 34px; border-radius: 10px; display: grid; place-items: center; color: #fff; font-weight: 700; font-size: 12.5px; flex: none; }
.avatar.lg { width: 46px; height: 46px; border-radius: 13px; font-size: 15px; }
.user-meta { flex: 1; min-width: 0; }
.user-name { font-weight: 600; font-size: var(--fs-small); }
.user-role { font-size: var(--fs-micro); color: var(--text-mute); }
.user-card > i { color: var(--text-mute); }

/* ============================== MAIN =================================== */
.main { grid-column: 3; display: flex; flex-direction: column; min-width: 0; min-height: 0; }
.topbar {
  height: var(--topbar-h); flex: none; display: flex; align-items: center; gap: 12px; padding: 0 22px;
  border-bottom: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg) 70%, transparent); backdrop-filter: blur(14px);
  position: sticky; top: 0; z-index: 20;
}
.breadcrumb { display: flex; align-items: center; gap: 6px; font-size: var(--fs-body); min-width: 0; }
.bc-item { color: var(--text-dim); font-weight: 500; transition: color var(--t); }
.bc-item:hover { color: var(--text); }
.bc-item.current { color: var(--text); font-weight: 600; }
.bc-sep { color: var(--text-mute); font-size: 10px; display: flex; }
.topbar-spacer { flex: 1; }
.search-trigger {
  display: flex; align-items: center; gap: 9px; padding: 8px 12px; border-radius: var(--r-sm);
  background: var(--surface-2); border: 1px solid var(--border); color: var(--text-mute); font-size: var(--fs-small); min-width: 240px;
  transition: all var(--t);
}
.search-trigger:hover { border-color: var(--border-strong); color: var(--text-dim); }
.search-trigger span { flex: 1; text-align: left; }
.search-trigger kbd { margin-left: auto; }
/* topbar My Task button — sits beside search; label collapses on small screens */
.topbar-task { flex: none; gap: 6px; }
@media (max-width: 720px) { .tb-task-lbl { display: none; } .search-trigger { min-width: 0; } }
.notif-dot { position: absolute; top: 5px; right: 5px; min-width: 16px; height: 16px; padding: 0 4px;
  border-radius: 999px; background: var(--bad); color: #fff; font-size: var(--fs-micro); font-weight: 800;
  display: grid; place-items: center; border: 2px solid var(--bg); }

/* Content scroll region ---------------------------------------------------*/
.content { flex: 1; min-width: 0; overflow-y: auto; padding: 26px 30px 60px; scroll-behavior: smooth; }
.page { max-width: var(--content-max); min-width: 0; margin: 0 auto; }

/* Mobile menu button hidden on desktop */
.only-mobile { display: none; }
.sidebar-backdrop { display: none; }

/* ============================ RESPONSIVE =============================== */
@media (max-width: 1080px) {
  .app { grid-template-columns: var(--rail-w) minmax(0, 1fr); }
  .sidebar {
    position: fixed; left: var(--rail-w); top: 0; bottom: 0; width: var(--sidebar-w);
    transform: translateX(-115%); transition: transform var(--t) var(--e-out); box-shadow: var(--shadow-lg);
  }
  body.sidebar-open .sidebar { transform: translateX(0); }
  .main { grid-column: 2; }
  .only-mobile { display: inline-grid; }
  .sidebar-backdrop { display: block; position: fixed; inset: 0; background: var(--scrim); opacity: 0; pointer-events: none;
    transition: opacity var(--t); z-index: 25; }
  body.sidebar-open .sidebar-backdrop { opacity: 1; pointer-events: auto; }
}
@media (max-width: 720px) {
  .content { padding: 18px 16px 50px; }
  .search-trigger span, .search-trigger kbd { display: none; }
  .search-trigger { min-width: 0; }
}