:root {
  --blue: #005A97;          /* KAUP brand blue (fills) */
  --blue-hover: #1470B0;
  --blue-bright: #3D9BE0;   /* KAUP blue lifted for text/outlines on dark */
  --green: #1E8E3E;
  --green-hover: #27a84a;
  --orange: #E8871E;
  --orange-hover: #ff9d33;
  --red: #D0303F;
  --red-hover: #ff4d5e;
  --grey: #9a9a9a;
  --grey-dim: #6e6e6e;
  --bg: #0c0c0c;
  --surface: #161616;
  --surface-2: #212121;
  --border: #2c2c2c;
  --white: #ffffff;
  --text: #f2f2f2;
  --font: "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body { margin: 0; font-family: var(--font); color: var(--text); background: var(--bg); }

#app-view { display: flex; flex-direction: column; height: 100vh; overflow: hidden; }
.app-header, .toolbar, .tabs, .admin-panel { flex-shrink: 0; }
#admin-panel, #user-settings-panel { max-height: 55vh; overflow-y: auto; }

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}

/* ---------- Logo ---------- */
.logo-chip { background: var(--white); padding: 5px 7px; line-height: 0; display: inline-block; }
.header-logo { height: 30px; width: auto; display: block; }
.login-logo-chip { display: block; width: fit-content; margin: 0 auto 22px; padding: 8px 10px; }
.login-logo { width: 220px; height: auto; display: block; }

/* ---------- Login ---------- */
.login-wrap { min-height: 100vh; display: flex; align-items: center; justify-content: center; background: var(--bg); }
.login-card {
  background: var(--surface); padding: 48px 40px; width: 360px; max-width: 90vw;
  border-top: 4px solid var(--blue); box-shadow: 0 2px 24px rgba(0,0,0,0.6); text-align: center;
}
.login-heading {
  color: var(--text); font-size: 15px; font-weight: 800; letter-spacing: 2.5px;
  text-transform: uppercase; margin: 0 0 28px; text-align: center;
}
.login-card form { text-align: left; }
.login-card input {
  width: 100%; padding: 13px 16px; border: none; border-radius: 8px; background: #F4F3C4;
  color: #3a3a24; font-size: 14px; font-family: var(--font); margin-bottom: 14px;
}
.login-card input::placeholder { color: #8a8a68; }
.login-card input:focus { outline: none; box-shadow: 0 0 0 2px var(--blue-bright); }
.login-card button {
  width: 100%; margin-top: 10px; padding: 13px; background: var(--blue); color: var(--white);
  border: none; border-radius: 8px; font-weight: 800; text-transform: uppercase; letter-spacing: 1px;
  cursor: pointer; font-size: 13px;
}
.login-card button:hover { background: var(--blue-hover); }
.login-btn { display: flex; align-items: center; justify-content: center; gap: 8px; }
.error-msg { color: var(--red-hover); font-size: 13px; margin-top: 14px; text-align: center; }

/* ---------- App shell ---------- */
.app-header {
  display: flex; align-items: center; gap: 24px; padding: 16px 32px;
  background: var(--surface); border-bottom: 3px solid var(--blue);
}
.header-title { flex: 1; }
.header-title h1 { margin: 0; font-size: 20px; letter-spacing: 0.5px; color: var(--text); }
.header-title .subtitle { margin: 2px 0 0; font-size: 11px; color: var(--grey); text-transform: uppercase; letter-spacing: 1px; }
.header-actions { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; justify-content: flex-end; }
.whoami { font-size: 12px; color: var(--grey); margin-right: 8px; }

.btn-primary {
  background: var(--blue); color: var(--white); border: none; padding: 10px 18px; font-size: 12px;
  text-transform: uppercase; letter-spacing: 0.5px; cursor: pointer; font-family: var(--font);
}
.btn-primary:hover { background: var(--blue-hover); }
.btn-primary:disabled { background: var(--grey-dim); cursor: not-allowed; }
.btn-green { background: var(--green); }
.btn-green:hover { background: var(--green-hover); }
.btn-orange { background: var(--orange); }
.btn-orange:hover { background: var(--orange-hover); }
.btn-red { background: var(--red); }
.btn-red:hover { background: var(--red-hover); }

.header-actions .btn-primary { padding: 8px 16px; font-size: 12px; }
.header-actions .upload-status { font-size: 11px; white-space: nowrap; }
.header-btn, .btn-icon {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  width: 150px; white-space: nowrap; cursor: pointer;
}

/* ---------- Admin panel ---------- */
.admin-panel { background: var(--surface); padding: 16px 32px; border-bottom: 1px solid var(--border); }
.admin-panel h2 { margin: 0 0 4px; font-size: 15px; text-transform: uppercase; letter-spacing: 0.5px; color: var(--text); }
.admin-note { color: var(--grey); font-size: 12px; margin: 0 0 14px; }
.upload-row { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.upload-filename { color: var(--grey); font-size: 12px; }
.load-file-group { display: contents; }
.upload-status { font-size: 12px; }
.upload-status.ok { color: #4fd17a; }
.upload-status.err { color: var(--red-hover); }
.data-meta { color: var(--grey); font-size: 11px; margin: 10px 0 0; }

.user-list { margin-bottom: 16px; max-width: 460px; }
.user-list-item {
  display: flex; justify-content: space-between; align-items: center; padding: 8px 0;
  border-bottom: 1px solid var(--border); font-size: 12px; color: var(--text);
}
.user-list-item-actions { display: flex; gap: 6px; }
.user-role-badge { color: var(--grey); text-transform: uppercase; font-size: 10px; letter-spacing: 0.4px; }

.add-item-heading { margin-top: 20px !important; padding-top: 16px; border-top: 1px solid var(--border); }
.add-item-form { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px 16px; margin-top: 12px; }
.add-item-form .field { display: flex; flex-direction: column; min-width: 0; }
.add-item-form .field-wide { grid-column: span 2; }
.add-item-form .field-full { grid-column: 1 / -1; }
.add-item-form label {
  font-size: 11px; color: var(--grey); text-transform: uppercase; letter-spacing: 0.4px; margin-bottom: 4px;
}
.label-hint { text-transform: none; letter-spacing: 0; color: var(--grey-dim); font-size: 11px; }
.add-item-form input, .add-item-form select, .add-item-form textarea {
  padding: 9px 10px; border: 1px solid var(--border); background: var(--surface-2); color: var(--text);
  font-size: 13px; font-family: var(--font);
}
.add-item-form textarea { resize: vertical; }
.add-item-form input:focus, .add-item-form select:focus, .add-item-form textarea:focus { outline: none; border-color: var(--blue-bright); }
.add-item-form .add-item-actions { display: flex; flex-direction: row; flex-wrap: wrap; align-items: center; gap: 12px; }
#pf-category-new { margin-top: 6px; }

/* Column editor */
.col-chips { display: flex; flex-wrap: wrap; gap: 6px; padding: 8px; background: var(--surface-2); border: 1px solid var(--border); min-height: 42px; }
.col-chip { display: inline-flex; align-items: center; background: #0f2b40; border: 1px solid #1b4a6e; }
.col-chip input {
  background: transparent !important; border: none !important; color: #b9dcf5 !important;
  padding: 4px 6px !important; font-size: 12px !important; width: 11ch;
}
.col-chip .chip-btn { background: none; border: none; color: #8cc3ea; cursor: pointer; padding: 2px 6px; font-size: 13px; }
.col-chip .chip-btn:hover { color: var(--white); }
.col-chip .chip-x:hover { color: var(--red-hover); }
.col-empty { color: var(--grey-dim); font-size: 12px; padding: 4px; }
.col-add-row { display: flex; gap: 8px; align-items: center; margin-top: 8px; flex-wrap: wrap; }
.col-add-row input { width: 200px; }
.col-presets { display: inline-flex; gap: 4px; flex-wrap: wrap; }
.preset {
  background: none; border: 1px dashed var(--grey-dim); color: var(--grey); padding: 3px 7px;
  font-size: 11px; cursor: pointer; font-family: var(--font);
}
.preset:hover { border-color: var(--blue-bright); color: var(--text); }

@media (max-width: 900px) {
  .add-item-form { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

/* ---------- Toolbar ---------- */
.toolbar { display: flex; align-items: center; gap: 12px; padding: 16px 32px; flex-wrap: wrap; }
.toolbar input[type="search"] {
  flex: 1; min-width: 220px; padding: 10px 14px; border: 1px solid var(--border);
  background: var(--surface); color: var(--text); font-size: 14px; font-family: var(--font);
}
.toolbar input[type="search"]:focus { outline: none; border-color: var(--blue-bright); }
.result-count { color: var(--grey); font-size: 12px; white-space: nowrap; }

/* ---------- Category tabs ---------- */
.tabs { display: flex; flex-wrap: wrap; gap: 6px; padding: 0 32px 16px; }
.tab {
  background: var(--surface); border: 1px solid var(--border); color: var(--grey); padding: 8px 14px;
  font-size: 12px; text-transform: uppercase; letter-spacing: 0.3px; cursor: pointer; white-space: nowrap;
  font-family: var(--font);
}
.tab:hover { color: var(--text); border-color: var(--grey-dim); }
.tab.active { background: var(--blue); border-color: var(--blue); color: var(--white); font-weight: 700; }

/* ---------- Row buttons ---------- */
.actions-cell { white-space: nowrap; text-align: right; }
.btn-tiny {
  display: inline-flex; align-items: center; justify-content: center; gap: 4px; width: 86px;
  white-space: nowrap; background: none; border: 1px solid var(--grey-dim); color: var(--text);
  padding: 5px 10px; font-size: 11px; text-transform: uppercase; letter-spacing: 0.3px; cursor: pointer;
  margin-left: 6px; font-family: var(--font);
}
.btn-tiny:hover { border-color: var(--blue-bright); color: var(--blue-bright); }
.btn-tiny-primary { border-color: var(--blue-bright); color: var(--blue-bright); }
.btn-tiny-primary:hover { background: var(--blue); border-color: var(--blue); color: var(--white); }
.btn-tiny-danger { border-color: var(--red); color: var(--red-hover); }
.btn-tiny-danger:hover { background: var(--red); border-color: var(--red); color: var(--white); }
.btn-tiny-green { border-color: var(--green); color: var(--green-hover); }
.btn-tiny-green:hover { background: var(--green); border-color: var(--green); color: var(--white); }
.btn-tiny-orange { border-color: var(--orange); color: var(--orange-hover); }
.btn-tiny-orange:hover { background: var(--orange); border-color: var(--orange); color: var(--white); }
.btn-tiny:disabled { opacity: 0.6; cursor: not-allowed; }
.edit-input {
  width: 100%; min-width: 64px; padding: 5px 6px; border: 1px solid var(--blue-bright); background: var(--bg);
  color: var(--text); font-size: 12px; font-family: var(--font);
}
.edit-input:focus { outline: none; border-color: var(--white); }

/* ---------- Results ---------- */
.results { flex: 1 1 auto; overflow-y: auto; min-height: 0; padding: 0 32px 48px; }
.category-title {
  font-size: 12px; color: var(--grey); text-transform: uppercase; letter-spacing: 2px;
  margin: 18px 0 4px; padding-left: 10px; border-left: 3px solid var(--blue);
}
.product-block { margin-bottom: 30px; }
.product-head {
  display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap;
  border-bottom: 2px solid var(--blue); padding: 12px 0 8px; background: var(--bg);
}
.product-head h3 { margin: 0; font-size: 14px; text-transform: uppercase; letter-spacing: 0.5px; color: var(--text); }
.product-head .head-right { display: flex; align-items: center; gap: 4px; }
.product-head .cat-count { color: var(--grey); font-weight: 400; font-size: 12px; margin-right: 6px; white-space: nowrap; }
.product-info { color: var(--grey); font-size: 12px; padding: 10px 0 10px; line-height: 1.6; display: flex; gap: 18px; align-items: flex-start; }
.product-text { min-width: 0; flex: 1; }
.drawing-thumb { flex: 0 0 auto; background: var(--white); border: 1px solid var(--border); padding: 6px; cursor: zoom-in; line-height: 0; }
.drawing-thumb:hover { border-color: var(--blue-bright); }
.drawing-thumb img { display: block; width: 260px; height: auto; }
.info-hint { display: block; color: var(--grey-dim); font-size: 11px; margin-top: 4px; }
.lightbox { position: fixed; inset: 0; z-index: 50; background: rgba(0,0,0,0.85); display: flex; align-items: center; justify-content: center; cursor: zoom-out; padding: 24px; }
.lightbox figure { margin: 0; display: flex; flex-direction: column; align-items: center; gap: 10px; max-width: 100%; max-height: 100%; }
.lightbox img { background: var(--white); padding: 14px; width: min(1000px, 92vw); max-height: 82vh; height: auto; object-fit: contain; image-rendering: auto; }
.lightbox figcaption { color: var(--grey); font-size: 12px; text-align: center; }
.product-info .info-line { display: block; }
.product-info .info-label { color: var(--blue-bright); text-transform: uppercase; font-size: 10px; letter-spacing: 0.6px; margin-right: 6px; }
.product-info details summary { cursor: pointer; color: var(--blue-bright); font-size: 11px; text-transform: uppercase; letter-spacing: 0.5px; margin-top: 2px; }
.product-info details p { margin: 4px 0 0; max-width: 110ch; }

.table-wrap { overflow: auto; max-height: 65vh; border: 1px solid var(--border); }
table { width: 100%; border-collapse: separate; border-spacing: 0; font-size: 13px; }
thead th {
  text-align: left; padding: 9px 8px; color: var(--grey); font-weight: 600; font-size: 11px;
  text-transform: uppercase; letter-spacing: 0.3px; border-bottom: 1px solid var(--border);
  cursor: pointer; white-space: nowrap; background: var(--surface);
  position: sticky; top: 0; z-index: 2;
}
thead th:hover { color: var(--blue-bright); }
tbody td { padding: 8px; border-bottom: 1px solid var(--border); color: var(--text); white-space: nowrap; background: var(--bg); }
tbody tr:hover td, tr.editing-row td { background: var(--surface-2); }

/* Frozen columns: Model on the left; Price, Remarks, actions on the right. Only spec columns scroll. */
.pin-l { position: sticky; left: 0; z-index: 1; box-shadow: 8px 0 8px -6px rgba(0,0,0,0.85); }
.pin-r { position: sticky; z-index: 1; }
.pin-r.pin-edge { box-shadow: -8px 0 8px -6px rgba(0,0,0,0.85); }
thead th.pin-l, thead th.pin-r { z-index: 3; }

td.model-cell { font-weight: 600; }
th.price-th { color: var(--text); }
.price-cell { font-weight: 700; white-space: nowrap; color: var(--text); }
.price-cell.empty { color: var(--grey-dim); font-weight: 400; }
.remarks-cell, th.remarks-th { color: var(--grey); font-size: 12px; max-width: 22ch; min-width: 12ch; overflow: hidden; text-overflow: ellipsis; }
.empty-state { color: var(--grey); text-align: center; padding: 60px 0; font-size: 14px; }
.empty-product { color: var(--grey-dim); font-size: 12px; padding: 12px 0; }

@media (max-width: 720px) {
  .app-header { flex-wrap: wrap; padding: 14px 16px; gap: 12px; }
  .results, .toolbar, .admin-panel, .tabs { padding-left: 16px; padding-right: 16px; }
  .header-btn { width: auto; }
  .tabs { flex-wrap: nowrap; overflow-x: auto; }
  .product-info { flex-direction: column; }
  .drawing-thumb img { width: 100%; max-width: 340px; }
}

[hidden] { display: none !important; }