/* British Noble | The Operating System for Publishing: Live 11-Workspace SaaS UI */
:root {
  --os-bg: #0b0d11;
  --os-panel: #12161d;
  --os-panel-elev: #181d26;
  --os-border: rgba(255, 255, 255, 0.09);
  --os-border-strong: rgba(255, 255, 255, 0.16);
  --os-text: #f3f5f8;
  --os-muted: #939cab;
  --os-lime: #eeff6d;
  --os-sky: #9ec5fe;
  --os-emerald: #34d399;
  --os-amber: #fbbf24;
  --os-rose: #fb7185;
  --os-maroon: #561430;
  --os-sans: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --os-serif: 'Newsreader', Georgia, serif;
  --os-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; background: var(--os-bg); color: var(--os-text); font-family: var(--os-sans); font-size: 14px; -webkit-font-smoothing: antialiased; overflow-x: clip; }
button, input, select, textarea { font: inherit; color: inherit; }
a { color: inherit; text-decoration: none; }

.os-app-shell {
  display: grid;
  grid-template-columns: 264px 1fr;
  min-height: 100vh;
}

.os-sidebar {
  background: #0e1117;
  border-right: 1px solid var(--os-border);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 18px 14px;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
  z-index: 90;
}

.os-brand-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 4px 8px 16px;
  border-bottom: 1px solid var(--os-border);
  margin-bottom: 14px;
}

.os-brand-row img { height: 32px; width: auto; }
.os-badge-live {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 3px 8px;
  border-radius: 999px;
  background: rgba(238, 255, 109, 0.14);
  color: var(--os-lime);
  border: 1px solid rgba(238, 255, 109, 0.32);
}

.os-ws-box {
  background: var(--os-panel);
  border: 1px solid var(--os-border);
  border-radius: 12px;
  padding: 11px 12px;
  margin-bottom: 16px;
}
.os-ws-box strong { display: block; font-size: 13px; color: #fff; }
.os-ws-box span { display: block; font-size: 11px; color: var(--os-muted); margin-top: 2px; }

.os-nav-group-label {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: #697386;
  padding: 8px 10px 5px;
}

.os-nav-list { display: grid; gap: 3px; margin-bottom: 10px; }

.os-nav-item {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 9px 11px;
  border-radius: 9px;
  border: 1px solid transparent;
  background: transparent;
  color: #c2c9d6;
  font-size: 13px;
  font-weight: 500;
  text-align: left;
  cursor: pointer;
  transition: all 0.16s ease;
}
.os-nav-item:hover { background: rgba(255, 255, 255, 0.05); color: #fff; }
.os-nav-item.is-active {
  background: rgba(238, 255, 109, 0.12);
  border-color: rgba(238, 255, 109, 0.28);
  color: var(--os-lime);
  font-weight: 600;
}
.os-nav-idx {
  font-family: var(--os-mono);
  font-size: 10px;
  opacity: 0.65;
}

.os-sidebar-foot {
  border-top: 1px solid var(--os-border);
  padding-top: 12px;
  display: grid;
  gap: 8px;
}

.os-main {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.os-topbar {
  height: 62px;
  padding: 0 24px;
  border-bottom: 1px solid var(--os-border);
  background: rgba(14, 17, 23, 0.88);
  backdrop-filter: blur(12px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  position: sticky;
  top: 0;
  z-index: 60;
}

.os-topbar-left { display: flex; align-items: center; gap: 12px; min-width: 0; }
.os-mobile-menu-btn {
  display: none;
  background: var(--os-panel);
  border: 1px solid var(--os-border);
  border-radius: 8px;
  padding: 7px 10px;
  cursor: pointer;
}

.os-breadcrumb { font-size: 13px; color: var(--os-muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.os-breadcrumb strong { color: #fff; font-weight: 600; }

.os-topbar-right { display: flex; align-items: center; gap: 10px; }

.os-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 12.5px;
  font-weight: 600;
  border: 1px solid var(--os-border-strong);
  background: var(--os-panel-elev);
  color: #fff;
  cursor: pointer;
  transition: all 0.16s ease;
  white-space: nowrap;
}
.os-btn:hover { border-color: rgba(255, 255, 255, 0.35); background: #222936; }
.os-btn-lime {
  background: var(--os-lime);
  color: #111317;
  border-color: var(--os-lime);
  font-weight: 700;
}
.os-btn-lime:hover { background: #e2fa3e; color: #111317; }

.os-content {
  padding: 26px;
  max-width: 1420px;
  width: 100%;
  margin: 0 auto;
}

.os-screen-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 22px;
}
.os-screen-head h1 {
  font-family: var(--os-serif);
  font-size: clamp(1.45rem, 2.4vw, 1.95rem);
  font-weight: 500;
  letter-spacing: -0.015em;
  color: #fff;
}
.os-screen-head p { color: var(--os-muted); font-size: 13.5px; margin-top: 4px; max-width: 680px; }

.os-kpi-row {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 14px;
  margin-bottom: 22px;
}
.os-stat-card {
  background: var(--os-panel);
  border: 1px solid var(--os-border);
  border-radius: 14px;
  padding: 16px 18px;
}
.os-stat-card span { display: block; font-size: 11.5px; color: var(--os-muted); margin-bottom: 6px; }
.os-stat-card strong { display: block; font-size: 22px; font-weight: 700; color: #fff; letter-spacing: -0.02em; }
.os-stat-card em { display: inline-block; font-style: normal; font-size: 11px; color: var(--os-emerald); margin-top: 5px; }

.os-grid-2 { display: grid; grid-template-columns: 1.35fr 1fr; gap: 18px; margin-bottom: 20px; }
.os-grid-equal { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-bottom: 20px; }
.os-grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-bottom: 20px; }

.os-card {
  background: var(--os-panel);
  border: 1px solid var(--os-border);
  border-radius: 16px;
  padding: 20px;
}
.os-card-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 16px;
}
.os-card-head h3 { font-size: 14.5px; font-weight: 600; color: #fff; }

.os-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 16px;
}

.os-input, .os-select {
  background: #0d1016;
  border: 1px solid var(--os-border-strong);
  border-radius: 10px;
  padding: 9px 12px;
  color: #fff;
  font-size: 13px;
}
.os-input:focus, .os-select:focus { outline: none; border-color: var(--os-lime); }

.os-table-wrap {
  width: 100%;
  overflow-x: auto;
  border: 1px solid var(--os-border);
  border-radius: 14px;
  background: var(--os-panel);
}
.os-table { width: 100%; border-collapse: collapse; font-size: 12.8px; }
.os-table th, .os-table td { padding: 11px 14px; text-align: left; border-bottom: 1px solid var(--os-border); }
.os-table th { font-size: 11px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--os-muted); background: #0f131a; white-space: nowrap; }
.os-table tr:hover td { background: rgba(255, 255, 255, 0.025); }

.os-chip {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 9px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 600;
  white-space: nowrap;
}
.os-chip.live { background: rgba(52, 211, 153, 0.15); color: #6ee7b7; }
.os-chip.qc { background: rgba(158, 197, 254, 0.16); color: #9ec5fe; }
.os-chip.edit { background: rgba(251, 191, 36, 0.15); color: #fcd34d; }

.os-kanban {
  display: grid;
  grid-template-columns: repeat(5, minmax(210px, 1fr));
  gap: 12px;
  overflow-x: auto;
  padding-bottom: 6px;
}
.os-kanban-col {
  background: #0f131a;
  border: 1px solid var(--os-border);
  border-radius: 14px;
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.os-kanban-item {
  background: var(--os-panel-elev);
  border: 1px solid var(--os-border);
  border-radius: 11px;
  padding: 12px;
}
.os-kanban-item strong { display: block; font-size: 12.5px; margin-bottom: 4px; color: #fff; }
.os-kanban-item span { display: block; font-size: 11px; color: var(--os-muted); margin-bottom: 8px; }

.os-spread-preview {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px;
  background: #2c313c;
  padding: 16px;
  border-radius: 14px;
  min-height: 330px;
}
.os-page-sheet {
  background: #faf7f0;
  color: #1b1e23;
  padding: 26px 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.32);
}
.os-page-sheet.show-bleed { outline: 1.5px dashed #ef4444; outline-offset: -6px; }

.os-cover-diagram {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 4px;
  background: #0d1016;
  padding: 20px;
  border-radius: 14px;
  border: 1px solid var(--os-border);
  min-height: 300px;
  align-items: stretch;
}
.os-cover-panel {
  background: linear-gradient(155deg, #3d0c20, #190811);
  border: 1px solid rgba(238, 255, 109, 0.35);
  border-radius: 6px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.os-cover-spine {
  background: #260714;
  border: 1px solid var(--os-lime);
  display: flex;
  align-items: center;
  justify-content: center;
  writing-mode: vertical-rl;
  padding: 10px 6px;
  font-size: 11px;
  font-weight: 700;
  color: var(--os-lime);
  min-width: 28px;
}

.os-code-box {
  background: #090b0f;
  border: 1px solid var(--os-border);
  border-radius: 12px;
  padding: 14px;
  font-family: var(--os-mono);
  font-size: 11.8px;
  line-height: 1.55;
  color: #bfd8ff;
  overflow-x: auto;
  max-height: 320px;
}

.os-modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(12, 15, 20, 0.68);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px 16px;
  z-index: 2800;
}
.os-modal-backdrop.is-open { display: flex; }
.os-modal {
  background: #ffffff;
  color: #1e2022;
  border: 1px solid rgba(30, 32, 34, 0.16);
  border-radius: 22px;
  padding: 0;
  width: 100%;
  max-width: 560px;
  box-shadow: 0 32px 72px rgba(0, 0, 0, 0.34);
  overflow: hidden;
}
.os-modal .os-card-head {
  padding: 18px 24px;
  margin: 0;
  background: #FAF8F5;
  border-bottom: 1px solid rgba(30, 32, 34, 0.12);
}
.os-modal .os-card-head h3 {
  color: #1e2022;
  font-size: 1.15rem;
}
.os-modal #os-modal-close {
  background: #ffffff;
  color: #1e2022;
  border: 1px solid rgba(30, 32, 34, 0.18);
  border-radius: 999px;
}
.os-modal form {
  padding: 22px 24px 24px;
  background: #ffffff;
}
.os-modal label {
  color: #484e56 !important;
  font-weight: 600;
}
.os-modal .os-input,
.os-modal .os-select {
  background: #FAF8F5;
  color: #1e2022;
  border: 1px solid rgba(30, 32, 34, 0.18);
}

.os-toast {
  position: fixed;
  right: 20px;
  bottom: 20px;
  background: var(--os-lime);
  color: #111317;
  padding: 11px 18px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 12.5px;
  box-shadow: 0 14px 34px rgba(0, 0, 0, 0.45);
  z-index: 300;
  display: none;
}
.os-toast.is-visible { display: block; }

.os-sidebar-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(8, 10, 14, 0.62);
  backdrop-filter: blur(3px);
  z-index: 80;
}

.os-author-banner {
  background: linear-gradient(135deg, rgba(86, 20, 48, 0.55), rgba(18, 22, 29, 0.96));
  border: 1px solid rgba(238, 255, 109, 0.28);
  border-radius: 16px;
  padding: 16px 20px;
  margin-bottom: 18px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.os-milestone-track {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  margin-bottom: 18px;
}
.os-milestone-step {
  background: #0d1016;
  border: 1px solid var(--os-border);
  border-radius: 12px;
  padding: 12px 14px;
}
.os-milestone-step.is-done {
  border-color: rgba(52, 211, 153, 0.36);
  background: rgba(52, 211, 153, 0.06);
}
.os-milestone-step span {
  display: block;
  font-size: 10.5px;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--os-muted);
  margin-bottom: 4px;
}
.os-milestone-step strong {
  display: block;
  font-size: 12.5px;
  color: #fff;
}

@media (max-width: 1120px) {
  .os-kpi-row { grid-template-columns: repeat(3, 1fr); }
  .os-grid-2, .os-grid-equal, .os-grid-3 { grid-template-columns: 1fr; }
  .os-milestone-track { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 920px) {
  .os-app-shell { grid-template-columns: 1fr; }
  .os-sidebar {
    position: fixed;
    left: -280px;
    top: 0;
    bottom: 0;
    width: 268px;
    transition: left 0.24s ease;
  }
  .os-sidebar.is-open { left: 0; box-shadow: 24px 0 60px rgba(0, 0, 0, 0.65); }
  .os-sidebar.is-open + .os-sidebar-backdrop { display: block; }
  .os-mobile-menu-btn { display: inline-flex; }
}

@media (max-width: 600px) {
  .os-content { padding: 16px 14px 28px; }
  .os-topbar { padding: 0 12px; height: 56px; }
  .os-topbar-right .os-chip { display: none; }
  .os-kpi-row { grid-template-columns: 1fr 1fr; gap: 10px; }
  .os-milestone-track { grid-template-columns: 1fr; }
  .os-spread-preview, .os-cover-diagram { grid-template-columns: 1fr; }
  .os-cover-spine { writing-mode: horizontal-tb; padding: 8px; }
  .os-toolbar { flex-direction: column; align-items: stretch; }
  .os-toolbar .os-input, .os-toolbar .os-select, .os-toolbar .os-btn { width: 100%; min-width: 0 !important; }
  .os-modal form > div[style*="grid-template-columns"] { grid-template-columns: 1fr !important; }
  #acq-title, .os-card div[style*="grid-template-columns"] { grid-template-columns: 1fr !important; }
}