/* ═══════════════════════════════════════════════════════════
   PORTBILL — APPLICATION SHELL
   Sidebar + topbar + content grid. The sidebar wraps the
   EXISTING `.module-tabs` / `.tab-btn` markup unchanged — no
   JS in switchModule()/updateAdminNavigation() is touched;
   this file only restyles those same elements vertically.
═══════════════════════════════════════════════════════════ */

.app-shell {
  position: relative;
  z-index: 1;
  display: flex;
  flex: 1;
  min-height: 0;
}

/* ── SIDEBAR ── */
.app-sidebar {
  flex: 0 0 var(--sidebar-w);
  width: var(--sidebar-w);
  background: linear-gradient(180deg, var(--bg-sidebar), var(--bg-page) 85%);
  border-right: 1px solid var(--bdr-1);
  display: flex;
  flex-direction: column;
  height: 100vh;
  position: sticky;
  top: 0;
  z-index: 200;
  box-shadow: 4px 0 24px -8px rgba(0,0,0,0.4);
}

.sidebar-brand {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  padding: var(--sp-4) var(--sp-4) var(--sp-3);
  border-bottom: 1px solid var(--bdr-1);
  flex-shrink: 0;
}
.sidebar-brand .logo-mark {
  color: var(--gold);
  flex-shrink: 0;
  display: flex;
}
.sidebar-brand-text {
  display: flex;
  flex-direction: column;
  min-width: 0;
}
.sidebar-brand-name {
  font-family: 'Inter', sans-serif;
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.02em;
  color: var(--tx-0);
}
.sidebar-brand-tag {
  font-size: 10.5px;
  color: var(--tx-2);
  letter-spacing: 0.03em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sidebar-nav {
  flex: 1;
  overflow-y: auto;
  padding: var(--sp-3) var(--sp-3) var(--sp-4);
  display: flex;
  flex-direction: column;
  gap: var(--sp-5);
}

.sidebar-group-label {
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--tx-2);
  padding: 0 var(--sp-2);
  margin-bottom: var(--sp-1);
}

/* Restyle the existing tabs container/buttons as a vertical nav list.
   Selectors below intentionally target the unmodified .module-tabs /
   .tab-btn classes emitted by index.html and toggled by admin.js. */
.module-tabs {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.tab-btn {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  width: 100%;
  text-align: left;
  padding: 9px var(--sp-3);
  border: none;
  border-radius: var(--r-sm);
  background: transparent;
  color: var(--tx-1);
  font-family: 'Inter', sans-serif;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: background var(--t-fast), color var(--t-fast);
  white-space: nowrap;
}
.tab-btn:hover { background: var(--bg-hover); color: var(--tx-0); }
.tab-btn .tab-icon { flex-shrink: 0; width: 16px; height: 16px; opacity: 0.85; transition: opacity var(--t-fast); }

.tab-btn.active {
  background: linear-gradient(180deg, var(--accent-bg), rgba(var(--accent-rgb), 0.03));
  color: var(--accent-hi);
  font-weight: 600;
  box-shadow: inset 0 0 0 1px var(--accent-bdr), inset 2px 0 0 var(--accent);
}
.tab-btn.active .tab-icon { opacity: 1; filter: drop-shadow(0 0 4px var(--accent-ring)); }

.tab-btn[hidden] { display: none; }

.sidebar-foot {
  flex-shrink: 0;
  padding: var(--sp-3) var(--sp-4);
  border-top: 1px solid var(--bdr-1);
  font-size: 10.5px;
  color: var(--tx-3);
  display: flex;
  justify-content: space-between;
}

/* Mobile: sidebar becomes an off-canvas drawer */
#sidebarToggle { display: none; }
#sidebarScrim { display: none; }

@media (max-width: 960px) {
  .app-sidebar {
    position: fixed;
    inset: 0 auto 0 0;
    transform: translateX(-100%);
    transition: transform var(--t-base);
    box-shadow: var(--shadow-xl);
  }
  body.sidebar-open .app-sidebar { transform: translateX(0); }
  #sidebarToggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 34px; height: 34px;
    border-radius: var(--r-sm);
    border: 1px solid var(--bdr-2);
    background: var(--bg-elevated);
    color: var(--tx-0);
    cursor: pointer;
  }
  #sidebarScrim {
    display: block;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 199;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--t-base);
  }
  body.sidebar-open #sidebarScrim { opacity: 1; pointer-events: auto; }
}

/* ── MAIN COLUMN ── */
.app-main-col {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
}

/* ── TOPBAR ── */
.app-topbar {
  position: sticky;
  top: 0;
  z-index: 150;
  height: var(--topbar-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-4);
  padding: 0 var(--sp-5);
  background: rgba(10,14,23,0.85);
  backdrop-filter: blur(14px) saturate(1.2);
  border-bottom: 1px solid var(--bdr-1);
  box-shadow: 0 8px 24px -12px rgba(0,0,0,0.5);
}
.topbar-left { display: flex; align-items: center; gap: var(--sp-3); min-width: 0; }
.topbar-titles { min-width: 0; }
.breadcrumb {
  font-size: 10.5px;
  color: var(--tx-2);
  letter-spacing: 0.02em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.topbar-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--tx-0);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.hright {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  flex-shrink: 0;
}

/* ── PAGE CONTENT ── */
.wrap {
  max-width: 1320px;
  margin: 0 auto;
  width: 100%;
  padding: clamp(14px, 2vw, 28px) clamp(14px, 2.5vw, 28px) clamp(56px, 8vh, 80px);
}

.layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(12px, 2vw, 20px);
  align-items: start;
}
.layout > div { min-width: 0; }

@media (min-width: 960px) {
  .layout { grid-template-columns: 1fr 340px; }
}
@media (min-width: 1280px) {
  .layout { grid-template-columns: 1fr 400px; }
}
@media (min-width: 1600px) {
  .layout { grid-template-columns: 1fr 440px; }
}

/* Sticky right-column preview/summary rail */
.layout > div:last-child {
  position: sticky;
  top: calc(var(--topbar-h) + var(--sp-4));
  max-height: calc(100vh - var(--topbar-h) - 2 * var(--sp-4));
  overflow-y: auto;
  scrollbar-width: none;
}
.layout > div:last-child::-webkit-scrollbar { display: none; }

@media (max-width: 959px) {
  .layout > div:last-child { position: static; max-height: none; }
}

.module-page { display: none; }
.module-page.active {
  display: block;
  animation: fadeUp var(--t-slow) both;
}
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}

.pgtitle {
  font-family: 'Bebas Neue', sans-serif;
  font-size: clamp(24px, 5vw, 52px);
  color: var(--accent);
  letter-spacing: 3.5px;
}
.pgsub {
  margin-top: 5px;
  font-family: 'DM Mono', monospace;
  color: var(--tx-2);
  font-size: clamp(9px, 1.5vw, 11px);
  letter-spacing: 2.5px;
  text-transform: uppercase;
}

/* Info/disclaimer note (Car "Hoisting Charge", Cargo "General Cargo Module",
   Re-Export "Hoisting Charge") — an icon-badge + two-tier text card instead
   of a flat bordered paragraph: a left accent bar and gradient wash give it
   real depth, and the disclaimer sentence is visually demoted (smaller,
   muted, divider) so it reads as a footnote rather than competing with the
   operational note above it. */
.weight-note, .cargo-note {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: var(--sp-3);
  margin-top: var(--sp-3);
  padding: var(--sp-3) var(--sp-4);
  background:
    linear-gradient(160deg, var(--amber-bg), transparent 65%),
    var(--bg-card);
  border: 1px solid var(--amber-bdr);
  border-radius: var(--r-sm);
  overflow: hidden;
  box-shadow: var(--shadow-sm), inset 0 1px 0 rgba(255,255,255,0.03);
}
.weight-note::before, .cargo-note::before {
  content: "";
  position: absolute; left: 0; top: 0; bottom: 0; width: 3px;
  background: linear-gradient(180deg, var(--amber), rgba(240,160,32,0.35));
}
.weight-note .note-icon, .cargo-note .note-icon {
  flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  width: 26px; height: 26px;
  margin-top: 1px;
  border-radius: 50%;
  background: var(--amber-bg);
  border: 1px solid var(--amber-bdr);
  color: var(--amber);
}
.weight-note .note-body, .cargo-note .note-body {
  flex: 1;
  min-width: 0;
  color: var(--tx-1);
  font-size: 12.5px;
  line-height: 1.55;
}
.weight-note .note-body p, .cargo-note .note-body p { margin: 0; }
.weight-note .note-body strong, .cargo-note .note-body strong { color: var(--tx-0); font-weight: 700; }
.weight-note .note-body .note-disclaimer, .cargo-note .note-body .note-disclaimer {
  margin-top: 7px;
  padding-top: 7px;
  border-top: 1px dashed var(--bdr-2);
  font-size: 11px;
  color: var(--tx-2);
}
.weight-note .note-disclaimer strong, .cargo-note .note-disclaimer strong { color: var(--tx-1); font-weight: 600; }

.copyright-footer {
  margin-top: auto;
  border-top: 1px solid var(--bdr-1);
  padding: var(--sp-5) clamp(14px, 2.5vw, 28px);
  font-size: 11.5px;
  color: var(--tx-2);
}
.footer-top {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: var(--sp-4);
  align-items: center;
  max-width: 1320px;
  margin: 0 auto;
}
@media (max-width: 600px) {
  .footer-top { grid-template-columns: 1fr; text-align: center; }
}
.footer-brand { font-family: 'Inter', sans-serif; font-weight: 700; color: var(--tx-1); }

/* ── STICKY BOTTOM ACTION BAR — mobile billing UX ── */
.mobile-action-bar { display: none; }
@media (max-width: 767px) {
  .mobile-action-bar {
    display: flex;
    position: sticky;
    bottom: 0;
    z-index: 140;
    gap: var(--sp-2);
    padding: var(--sp-3);
    background: rgba(10,14,23,0.96);
    backdrop-filter: blur(10px);
    border-top: 1px solid var(--bdr-2);
  }
  .mobile-action-bar .mab-reset { flex: 0 0 90px; height: 44px; }
  .mobile-action-bar .mab-generate { flex: 1; height: 44px; }
}