/* ── Premium Design System ── */
:root {
  /* Colors - Modern HSL Palette */
  --h: 220; /* Primary Hue */
  --p: var(--h), 85%, 60%; /* Primary */
  --p-d: var(--h), 85%, 45%;
  --s: 220, 20%, 98%; /* Surface */
  --s-2: 220, 20%, 94%;
  --s-3: 220, 20%, 88%;
  --t: 220, 40%, 12%; /* Text */
  --t-m: 220, 15%, 45%; /* Text Muted */
  
  --success: 145, 65%, 40%;
  --warning: 38, 95%, 45%;
  --danger: 0, 75%, 55%;
  
  /* System Tokens */
  --bg: hsl(220, 30%, 98%);
  --surface: hsl(0, 0%, 100%);
  --border: hsl(220, 20%, 90%);
  --border-focus: hsla(var(--p), 0.5);
  
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -1px rgba(0,0,0,0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1), 0 10px 10px -5px rgba(0,0,0,0.04);
  
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;
  
  --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* ── Reset & Base ── */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background: var(--bg);
  color: hsl(var(--t));
  min-height: 100vh;
  overflow-x: hidden;
}

button, input, select, textarea {
  font: inherit;
  color: inherit;
}

button {
  cursor: pointer;
  border: none;
  background: none;
}

/* ── Layout ── */
.app-shell {
  display: grid;
  grid-template-columns: 280px 1fr;
  min-height: 100vh;
}

.sidebar {
  background: var(--surface);
  border-right: 1px solid var(--border);
  padding: 2rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
  position: sticky;
  top: 0;
  height: 100vh;
}

.main {
  padding: 2.5rem;
  max-width: 1600px;
  margin: 0 auto;
  width: 100%;
}

/* ── Brand ── */
.brand {
  display: flex;
  align-items: center;
  gap: 1rem;
  text-decoration: none;
}

.brand-mark {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, hsl(var(--p)), hsl(var(--p-d)));
  border-radius: var(--radius-md);
  display: grid;
  place-items: center;
  color: white;
  font-weight: 800;
  font-size: 1.5rem;
  box-shadow: 0 4px 12px hsla(var(--p), 0.3);
}

.brand strong {
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}

.brand small {
  color: hsl(var(--t-m));
  font-size: 0.875rem;
  display: block;
}

/* ── Navigation ── */
.nav-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.nav-button {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.875rem 1rem;
  border-radius: var(--radius-md);
  color: hsl(var(--t-m));
  font-weight: 600;
  transition: var(--transition);
}

.nav-button:hover {
  background: hsl(var(--s-2));
  color: hsl(var(--t));
}

.nav-button.is-active {
  background: hsla(var(--p), 0.1);
  color: hsl(var(--p));
}

/* ── Topbar ── */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 2.5rem;
}

.eyebrow {
  color: hsl(var(--t-m));
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.25rem;
}

h1 {
  font-size: 2.25rem;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.topbar-actions {
  display: flex;
  gap: 0.75rem;
}

/* ── Buttons ── */
.primary-button {
  background: linear-gradient(135deg, hsl(var(--p)), hsl(var(--p-d)));
  color: white;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  font-weight: 700;
  box-shadow: 0 4px 12px hsla(var(--p), 0.2);
  transition: var(--transition);
}

.primary-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px hsla(var(--p), 0.3);
}

.secondary-button {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  transition: var(--transition);
}

.secondary-button:hover {
  background: hsl(var(--s-2));
  border-color: hsl(var(--s-3));
}

/* ── Dashboard Metrics ── */
.metric-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2.5rem;
}

.metric-card {
  background: var(--surface);
  padding: 1.5rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.metric-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.metric-card span {
  font-size: 0.875rem;
  font-weight: 600;
  color: hsl(var(--t-m));
}

.metric-card strong {
  display: block;
  font-size: 2rem;
  font-weight: 800;
  margin: 0.5rem 0;
  letter-spacing: -0.02em;
}

.metric-sub {
  font-size: 0.75rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.tone-brand { border-top: 4px solid hsl(var(--p)); }
.tone-good { border-top: 4px solid hsl(var(--success)); }
.tone-warn { border-top: 4px solid hsl(var(--warning)); }
.tone-bad { border-top: 4px solid hsl(var(--danger)); }

/* ── Dashboard Grid ── */
.dash-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: 1.5rem;
}

.mini-list {
  display: flex;
  flex-direction: column;
}

.mini-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}

.mini-row:last-child {
  border-bottom: none;
}

.mini-row:hover {
  background: hsl(var(--s-2));
}

.mini-row strong {
  display: block;
}


.pipeline {
  display: flex;
  gap: 1rem;
  overflow-x: auto;
  padding-bottom: 1rem;
}

.pipeline-stage {
  flex: 1;
  min-width: 140px;
  background: hsl(var(--s-2));
  padding: 1.25rem;
  border-radius: var(--radius-md);
  text-align: center;
  border: 1px solid transparent;
  transition: var(--transition);
}

.pipeline-stage:hover {
  background: var(--surface);
  border-color: hsl(var(--p));
  transform: scale(1.02);
}

.pipeline-icon { font-size: 1.5rem; margin-bottom: 0.5rem; }
.pipeline-count { font-size: 1.5rem; font-weight: 800; }
.pipeline-label { font-size: 0.75rem; font-weight: 700; color: hsl(var(--t-m)); text-transform: uppercase; }

/* ── Cards & Panels ── */
.panel {
  background: var(--surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.panel-heading {
  padding: 1.5rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.content-grid {
  display: grid;
  grid-template-columns: 1fr 400px;
  gap: 2rem;
}

/* ── Progress ── */
.prog-track {
  height: 8px;
  background: hsl(var(--s-2));
  border-radius: var(--radius-full);
  overflow: hidden;
}

.prog-fill {
  height: 100%;
  border-radius: var(--radius-full);
  transition: width 0.6s ease;
}

.prog-fill.greige { background: linear-gradient(90deg, #60a5fa, #3b82f6); }
.prog-fill.final { background: linear-gradient(90deg, #34d399, #10b981); }

/* ── Forms ── */
.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.25rem;
  padding: 1.5rem;
}

label {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: hsl(var(--t-m));
}

input, select, textarea {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  transition: var(--transition);
}

input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: hsl(var(--p));
  box-shadow: 0 0 0 4px hsla(var(--p), 0.1);
}

/* ── Chips ── */
.chip {
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
}

.chip.good { background: hsla(145, 65%, 40%, 0.1); color: hsl(var(--success)); }
.chip.warn { background: hsla(38, 95%, 45%, 0.1); color: hsl(var(--warning)); }
.chip.bad { background: hsla(0, 75%, 55%, 0.1); color: hsl(var(--danger)); }

/* ── Sync ── */
.sync-box {
  background: hsl(var(--s-2));
  padding: 1rem;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-top: auto;
}

.sync-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: hsl(var(--warning));
}

.sync-dot.is-online { background: hsl(var(--success)); box-shadow: 0 0 8px hsla(145, 65%, 40%, 0.5); }

/* ── Glassmorphism Utils ── */
.glass {
  background: hsla(0, 0%, 100%, 0.7) !important;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

/* ── Responsive ── */
@media (max-width: 1024px) {
  .app-shell { grid-template-columns: 1fr; }
  .sidebar { display: none; }
  .content-grid { grid-template-columns: 1fr; }
}

/* ── Custom Scrollbar ── */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: hsl(var(--s-3)); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: hsl(var(--t-m)); }


.progress-tile {
  padding: 8px;
  border-radius: 8px;
  background: var(--surface-2);
}

.progress-tile span {
  display: block;
  color: var(--muted);
  font-size: 11px;
}

.progress-tile strong {
  display: block;
  margin-top: 3px;
  font-size: 14px;
}

.workflow-panel {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.workflow-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 14px;
}

.tab-button {
  min-height: 34px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0 11px;
  color: var(--muted);
  background: #ffffff;
  font-weight: 700;
}

.tab-button.is-active {
  color: var(--brand-dark);
  border-color: #bfdbfe;
  background: #eff6ff;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.form-grid.compact {
  grid-template-columns: repeat(6, minmax(110px, 1fr));
}

.full-field,
.stack-form {
  margin-top: 12px;
}

.stack-form {
  display: grid;
  gap: 12px;
}

.form-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}

.form-panel {
  max-width: 1120px;
}

.item-editor-list {
  display: grid;
  gap: 12px;
}

.item-editor {
  padding: 14px;
  box-shadow: none;
}

.item-editor-head {
  margin-bottom: 10px;
}

.master-card {
  display: grid;
  gap: 4px;
}

.master-card strong {
  font-size: 14px;
}

.master-card span {
  color: var(--muted);
  font-size: 12px;
}

.mini-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  font-size: 13px;
}

.toast {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 20;
  max-width: min(420px, calc(100vw - 36px));
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
  box-shadow: var(--shadow);
}

/* ── Colour Bar ── */
.colour-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
  padding: 4px 0;
}

.colour-chip {
  min-height: 32px;
  padding: 0 14px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: #ffffff;
  font-size: 13px;
  font-weight: 700;
  color: var(--muted);
  cursor: pointer;
  transition: all 160ms ease;
}

.colour-chip:hover {
  background: var(--surface-2);
  border-color: var(--brand);
}

.colour-chip.is-active {
  background: var(--brand);
  border-color: var(--brand);
  color: #ffffff;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.2);
}

@media (max-width: 1180px) {
  .metric-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .content-grid,
  .orders-layout {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 860px) {
  .app-shell {
    display: block;
    padding-bottom: 74px;
  }

  .sidebar {
    position: fixed;
    inset: auto 0 0;
    z-index: 10;
    display: block;
    height: auto;
    padding: 8px;
    border-top: 1px solid var(--line);
    border-right: 0;
  }

  .brand,
  .sync-box {
    display: none;
  }

  .nav-list {
    grid-template-columns: repeat(4, 1fr);
    gap: 6px;
  }

  .nav-button {
    min-height: 48px;
    padding: 7px 6px;
    text-align: center;
    font-size: 13px;
  }

  .main {
    padding: 18px;
  }

  .topbar {
    align-items: flex-start;
  }

  h1 {
    font-size: 24px;
  }

  .form-grid,
  .form-grid.compact,
  .pi-summary,
  .progress-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 560px) {
  .topbar {
    display: grid;
  }

  .topbar-actions {
    justify-content: stretch;
  }

  .topbar-actions button,
  .toolbar label,
  .select-field {
    width: 100%;
  }

  .metric-grid {
    grid-template-columns: 1fr;
  }

  .panel {
    padding: 14px;
  }
}