:root{
  --charcoal: #15171A;
  --graphite: #1F2226;
  --panel: #24272C;
  --aluminium: #C9CFD6;
  --aluminium-dim: #8A929C;
  --hairline: #383C42;
  --blue: #4F8FC4;
  --blue-dim: #2E5C82;
  --amber: #D98E3B;
  --white: #F3F4F6;
  --error: #D9603B;
  --radius: 2px;
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

*{box-sizing:border-box; margin:0; padding:0;}

body{
  font-family: var(--font-body);
  background: var(--charcoal);
  color: var(--white);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

.shell{
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1.15fr 1fr;
}

@media (max-width: 880px){
  .shell{ grid-template-columns: 1fr; }
  .brand-panel{ min-height: 38vh; }
}

/* ---------- Left: brand / spec sheet panel ---------- */
.brand-panel{
  position: relative;
  background:
    linear-gradient(180deg, rgba(21,23,26,0.2), rgba(21,23,26,0.85)),
    repeating-linear-gradient(90deg, rgba(201,207,214,0.05) 0px, rgba(201,207,214,0.05) 1px, transparent 1px, transparent 56px),
    repeating-linear-gradient(0deg, rgba(201,207,214,0.05) 0px, rgba(201,207,214,0.05) 1px, transparent 1px, transparent 56px),
    linear-gradient(135deg, #1B1E22 0%, #101214 100%);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: clamp(28px, 4vw, 64px);
}

.reg-mark{
  position: absolute;
  width: 22px; height: 22px;
  border: 1px solid var(--aluminium-dim);
  opacity: 0.55;
}
.reg-mark::before, .reg-mark::after{
  content:'';
  position:absolute;
  background: var(--aluminium-dim);
}
.reg-mark::before{ top:50%; left:-6px; width:34px; height:1px; transform: translateY(-50%);}
.reg-mark::after{ left:50%; top:-6px; height:34px; width:1px; transform: translateX(-50%);}
.reg-mark.tl{ top: 24px; left: 24px; }
.reg-mark.br{ bottom: 24px; right: 24px; }

.brand-top{ display:flex; align-items:center; gap:14px; }
.brand-mark{
  width: 38px; height: 38px;
  border: 1.5px solid var(--aluminium);
  display:flex; align-items:center; justify-content:center;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 1px;
  flex-shrink: 0;
}
.brand-name{
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 19px;
  letter-spacing: 2px;
}
.brand-sub{
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--aluminium-dim);
  letter-spacing: 1.5px;
  margin-top: 2px;
}

.brand-mid{ max-width: 540px; }
.eyebrow{
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 3px;
  color: var(--amber);
  text-transform: uppercase;
  margin-bottom: 18px;
  display:flex; align-items:center; gap:10px;
}
.eyebrow::before{ content:''; width: 24px; height:1px; background: var(--amber); }

.headline{
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(30px, 3.4vw, 46px);
  line-height: 1.08;
  letter-spacing: -0.5px;
  color: var(--white);
}
.headline em{
  font-style: normal;
  color: var(--aluminium-dim);
}

.subcopy{
  margin-top: 18px;
  font-size: 14.5px;
  line-height: 1.65;
  color: var(--aluminium-dim);
  max-width: 460px;
}

.spec-row{
  margin-top: 36px;
  display: grid;
  grid-template-columns: repeat(3, auto);
  gap: 36px;
}
.spec-item{ border-left: 1px solid var(--hairline); padding-left: 14px; }
.spec-value{
  font-family: var(--font-mono);
  font-size: 20px;
  color: var(--white);
  font-weight: 500;
}
.spec-label{
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 1.2px;
  color: var(--aluminium-dim);
  text-transform: uppercase;
  margin-top: 4px;
}

.brand-foot{
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 1px;
  color: var(--aluminium-dim);
  display:flex; justify-content: space-between;
  border-top: 1px solid var(--hairline);
  padding-top: 14px;
}

/* ---------- Right: access terminal ---------- */
.auth-panel{
  background: var(--graphite);
  display:flex; align-items:center; justify-content:center;
  padding: clamp(24px, 5vw, 48px);
}

.auth-card{ width: 100%; max-width: 380px; }

.auth-tag{
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 2.5px;
  color: var(--blue);
  text-transform: uppercase;
  margin-bottom: 10px;
}
.auth-title{
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 700;
  margin-bottom: 6px;
}
.auth-desc{
  font-size: 13.5px;
  color: var(--aluminium-dim);
  margin-bottom: 30px;
}

.field{ margin-bottom: 18px; }
.field label{
  display:block;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  color: var(--aluminium-dim);
  margin-bottom: 7px;
}
.field input{
  width: 100%;
  background: var(--panel);
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  color: var(--white);
  font-family: var(--font-body);
  font-size: 14.5px;
  padding: 12px 13px;
  outline: none;
  transition: border-color 0.15s ease;
}
.field input::placeholder{ color: #565B62; }
.field input:focus{ border-color: var(--blue); }
.field input:focus-visible{ outline: 2px solid var(--blue); outline-offset: 1px; }

.field-row-between{
  display:flex; align-items:center; justify-content:space-between;
}
.link-quiet{
  font-size: 12px;
  color: var(--aluminium-dim);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}
.link-quiet:hover{ color: var(--blue); border-color: var(--blue); }

.password-wrap{ position: relative; }
.toggle-pw{
  position:absolute; right: 10px; top: 50%; transform: translateY(-50%);
  background: none; border: none; color: var(--aluminium-dim);
  font-family: var(--font-mono); font-size: 10px; letter-spacing: 1px;
  cursor: pointer; text-transform: uppercase; padding: 4px 6px;
}
.toggle-pw:hover{ color: var(--white); }
.toggle-pw:focus-visible{ outline: 2px solid var(--blue); }

.remember-row{ margin: 4px 0 26px; display:flex; align-items:center; gap: 9px; }
.remember-row input[type="checkbox"]{
  width: 15px; height: 15px;
  accent-color: var(--blue);
}
.remember-row label{ font-size: 12.5px; color: var(--aluminium-dim); }

.btn-primary{
  width: 100%;
  background: var(--blue);
  color: #0E1517;
  border: none;
  border-radius: var(--radius);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.5px;
  padding: 13px;
  cursor: pointer;
  transition: background 0.15s ease, transform 0.1s ease;
  display:flex; align-items:center; justify-content:center; gap: 8px;
}
.btn-primary:hover{ background: #5C9CD2; }
.btn-primary:active{ transform: translateY(1px); }
.btn-primary:disabled{ background: var(--blue-dim); cursor: not-allowed; }
.btn-primary:focus-visible{ outline: 2px solid var(--white); outline-offset: 2px; }

.btn-arrow{ font-family: var(--font-mono); font-size: 14px; }

.error-banner{
  display:none;
  background: rgba(217,96,59,0.12);
  border: 1px solid var(--error);
  color: #F2A487;
  font-size: 12.5px;
  padding: 10px 12px;
  border-radius: var(--radius);
  margin-bottom: 18px;
  font-family: var(--font-mono);
}
.error-banner.show{ display: block; }

.divider-text{
  display:flex; align-items:center; gap: 12px;
  margin: 26px 0 18px;
  color: var(--aluminium-dim);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
}
.divider-text::before, .divider-text::after{
  content:''; flex:1; height: 1px; background: var(--hairline);
}

.demo-box{
  border: 1px dashed var(--hairline);
  border-radius: var(--radius);
  padding: 12px 14px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--aluminium-dim);
  line-height: 1.7;
}
.demo-box b{ color: var(--white); font-weight: 500; }

.footer-note{
  margin-top: 28px;
  font-size: 11.5px;
  color: var(--aluminium-dim);
  text-align: center;
}
.footer-note a{ color: var(--aluminium-dim); }

@media (prefers-reduced-motion: no-preference){
  .auth-card{ animation: rise 0.5s ease both; }
  @keyframes rise{
    from{ opacity:0; transform: translateY(8px); }
    to{ opacity:1; transform: translateY(0); }
  }
}

/* ── Global save confirmation banner ──────────────────────── */
.save-banner {
  position: fixed;
  top: -80px;
  left: 50%;
  transform: translateX(-50%);
  background: #2D6E4A;
  color: #fff;
  border-radius: 40px;
  padding: 13px 28px;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.2px;
  z-index: 2000;
  display: flex;
  align-items: center;
  gap: 10px;
  box-shadow: 0 6px 32px rgba(0,0,0,0.5);
  pointer-events: none;
  white-space: nowrap;
  transition: top 0.3s cubic-bezier(0.34,1.56,0.64,1), opacity 0.3s ease;
  opacity: 0;
}
.save-banner.visible {
  top: 24px;
  opacity: 1;
}
.save-banner-icon { font-size: 17px; }

/* ════════════════════════════════════════════════════════════════
   LIGHT THEME
   Applied when <html data-theme="light">
   ════════════════════════════════════════════════════════════════ */
:root[data-theme="light"] {
  --charcoal:      #F2F4F7;
  --graphite:      #FFFFFF;
  --panel:         #F7F8FA;
  --aluminium:     #2C3038;
  --aluminium-dim: #6B7280;
  --hairline:      #E3E6EB;
  --blue:          #2E6FA3;
  --blue-dim:      #B8D4EA;
  --amber:         #B86A00;
  --white:         #111318;
  --error:         #C0392B;
}

/* Topbar */
:root[data-theme="light"] .topbar {
  background: #FFFFFF;
  border-bottom: 1px solid #E3E6EB;
  box-shadow: 0 1px 4px rgba(0,0,0,.06);
}
:root[data-theme="light"] .topbar-brand,
:root[data-theme="light"] .module-label,
:root[data-theme="light"] .brand-name { color: #111318; }
:root[data-theme="light"] .brand-mark { background: #2E6FA3; color: #fff; }
:root[data-theme="light"] .divider-v  { background: #E3E6EB; }
:root[data-theme="light"] .user-chip  { background: #F0F4F8; color: #4B5563; }
:root[data-theme="light"] .btn-ghost  { color: #4B5563; border-color: #D1D5DB; }
:root[data-theme="light"] .btn-ghost:hover { background: #F0F4F8; }

/* Tab nav */
:root[data-theme="light"] .tab-nav {
  background: #FFFFFF;
  border-bottom: 1px solid #E3E6EB;
}
:root[data-theme="light"] .tab-btn       { color: #6B7280; }
:root[data-theme="light"] .tab-btn:hover { color: #111318; background: #F7F8FA; }
:root[data-theme="light"] .tab-btn.active{
  color: #2E6FA3;
  border-bottom-color: #2E6FA3;
}

/* Content areas */
:root[data-theme="light"] .crm-body { background: #F2F4F7; }
:root[data-theme="light"] .crm-content { background: #F2F4F7; }
:root[data-theme="light"] .panel     { background: #FFFFFF; border-color: #E3E6EB; }
:root[data-theme="light"] .stat-card { background: #FFFFFF; border-color: #E3E6EB; }
:root[data-theme="light"] .stat-card.highlight { background: #EEF4FB; border-color: #B8D4EA; }

/* Tables */
:root[data-theme="light"] table thead tr { background: #F7F8FA; }
:root[data-theme="light"] table th       { color: #6B7280; border-bottom-color: #E3E6EB; }
:root[data-theme="light"] table td       { border-bottom-color: #F0F2F5; }
:root[data-theme="light"] table tbody tr:hover { background: rgba(46,111,163,.04); }
:root[data-theme="light"] .table-wrap    { background: #FFFFFF; border: 1px solid #E3E6EB; border-radius: 2px; }

/* Modals */
:root[data-theme="light"] .modal { background: #FFFFFF; border-color: #E3E6EB; }
:root[data-theme="light"] .modal-header { border-bottom-color: #E3E6EB; }
:root[data-theme="light"] .modal-footer { border-top-color: #E3E6EB; }
:root[data-theme="light"] .modal-backdrop { background: rgba(17,19,24,.45); }

/* Forms */
:root[data-theme="light"] input,
:root[data-theme="light"] select,
:root[data-theme="light"] textarea {
  background: #FFFFFF;
  border-color: #D1D5DB;
  color: #111318;
}
:root[data-theme="light"] input:focus,
:root[data-theme="light"] select:focus,
:root[data-theme="light"] textarea:focus { border-color: #2E6FA3; }
:root[data-theme="light"] input::placeholder,
:root[data-theme="light"] textarea::placeholder { color: #9CA3AF; }
:root[data-theme="light"] .search-input { background: #FFFFFF; border-color: #D1D5DB; color: #111318; }
:root[data-theme="light"] .log-input    { background: #FFFFFF; border-color: #D1D5DB; color: #111318; }

/* Buttons */
:root[data-theme="light"] .btn-primary  { background: #2E6FA3; }
:root[data-theme="light"] .btn-neutral  { background: #F0F4F8; border-color: #D1D5DB; color: #374151; }
:root[data-theme="light"] .btn-neutral:hover { background: #E4EAF2; }
:root[data-theme="light"] .btn-danger   { background: rgba(192,57,43,.08); border-color: rgba(192,57,43,.4); color: #C0392B; }

/* Activity / pills / filters */
:root[data-theme="light"] .filter-pills { background: #F0F2F5; border-color: #E3E6EB; }
:root[data-theme="light"] .pill         { color: #6B7280; }
:root[data-theme="light"] .pill.active  { background: #FFFFFF; color: #2E6FA3; box-shadow: 0 1px 3px rgba(0,0,0,.08); }
:root[data-theme="light"] .activity-item{ border-bottom-color: #F0F2F5; }
:root[data-theme="light"] .no-data      { color: #9CA3AF; }

/* Toasts */
:root[data-theme="light"] .toast        { background: #1F2226; color: #F3F4F6; }

/* Dashboard cards */
:root[data-theme="light"] .module-card  { background: #FFFFFF; border-color: #E3E6EB; }
:root[data-theme="light"] .module-card:hover { border-color: #2E6FA3; }

/* KPI cards (management) */
:root[data-theme="light"] .kpi-card     { background: #FFFFFF; border-color: #E3E6EB; }
:root[data-theme="light"] .kpi-card.alert .kpi-value  { color: #C0392B; }
:root[data-theme="light"] .kpi-card.warn  .kpi-value  { color: #B86A00; }
:root[data-theme="light"] .kpi-card.good  .kpi-value  { color: #1E7C4A; }
:root[data-theme="light"] .kpi-card.info  .kpi-value  { color: #2E6FA3; }

/* Misc cards */
:root[data-theme="light"] .mfg-card     { background: #FFFFFF; border-color: #E3E6EB; }
:root[data-theme="light"] .mfg-stock    .mfg-stock-row { background: #F7F8FA; }
:root[data-theme="light"] .po-card      { background: #FFFFFF; border-color: #E3E6EB; }
:root[data-theme="light"] .qs-card      { background: #FFFFFF; border-color: #E3E6EB; }
:root[data-theme="light"] .ic-card      { background: #FFFFFF; border-color: #E3E6EB; }
:root[data-theme="light"] .approval-card{ background: #FFFFFF; border-color: #E3E6EB; }
:root[data-theme="light"] .role-card    { background: #FFFFFF; border-color: #E3E6EB; }
:root[data-theme="light"] .cat-card     { background: #FFFFFF; border-color: #E3E6EB; }

/* Section headings */
:root[data-theme="light"] .section-title { color: #111318; }
:root[data-theme="light"] .section-sub   { color: #6B7280; }
:root[data-theme="light"] .panel-title   { color: #111318; }