/* =========================================================
   Bike Build Tracker — "Brutalist Studio"
   High-contrast, structural, zero-radius. Light + dark via
   CSS variables. Defaults follow the OS colour scheme.
   ========================================================= */

:root {
  --bg: #ffffff;
  --surface: #ffffff;
  --surface-alt: #f4f3f1;
  --ink: #0a0a0a;
  --text-muted: #55554f;
  --accent: #ffd300;
  --accent-ink: #0a0a0a;
  --danger: #e8432f;
  --border: #0a0a0a;
  --strong-bg: #0a0a0a;
  --strong-fg: #ffffff;
  --focus: #0a0a0a;
  --acquired-bg: #0a0a0a;
  --acquired-text: #d6d6d0;
  --dragging: rgba(10, 10, 10, 0.96);
  --shadow: none;
  --radius: 0;

  --font-display: "Archivo Black", "Arial Black", Arial, sans-serif;
  --font-sans: "Archivo", -apple-system, BlinkMacSystemFont, "Segoe UI",
    Roboto, Helvetica, Arial, sans-serif;
  --font-mono: "Space Mono", "SF Mono", SFMono-Regular, Menlo, Consolas,
    monospace;
}

:root[data-theme="dark"] {
  --bg: #0a0a0a;
  --surface: #111111;
  --surface-alt: #1b1b1b;
  --ink: #f2f2ef;
  --text-muted: #9a9a92;
  --accent: #ffd300;
  --accent-ink: #0a0a0a;
  --danger: #e8432f;
  --border: #3a3a3a;
  --strong-bg: #f2f2ef;
  --strong-fg: #0a0a0a;
  --focus: #ffd300;
  --acquired-bg: #262626;
  --acquired-text: #a6a69e;
  --dragging: rgba(10, 10, 10, 0.96);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0a0a0a;
    --surface: #111111;
    --surface-alt: #1b1b1b;
    --ink: #f2f2ef;
    --text-muted: #9a9a92;
    --accent: #ffd300;
    --accent-ink: #0a0a0a;
    --danger: #e8432f;
    --border: #3a3a3a;
    --strong-bg: #f2f2ef;
    --strong-fg: #0a0a0a;
    --focus: #ffd300;
    --acquired-bg: #262626;
    --acquired-text: #a6a69e;
    --dragging: rgba(242, 242, 239, 0.96);
  }
}

* {
  box-sizing: border-box;
}

html {
  font-size: 16px;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.4;
}

body.dragging::after {
  content: "DROP CSV OR JSON";
  position: fixed;
  inset: 0;
  background: var(--dragging);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  z-index: 1000;
  pointer-events: none;
}

h1, h2, h3, p {
  margin: 0;
}

button {
  font-family: inherit;
  font-size: inherit;
  cursor: pointer;
}

input, select {
  font-family: var(--font-mono);
  font-size: 0.88rem;
  color: inherit;
}

::selection {
  background: var(--accent);
  color: var(--accent-ink);
}

/* ---------- Header ---------- */

.app-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 0.75rem 0;
  position: sticky;
  top: 0;
  z-index: 50;
}

.header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  max-width: 1200px;
  margin: 0 auto;
}

.app-title {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
  line-height: 1;
}

.app-kicker {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.22em;
  color: var(--text-muted);
}

.app-title-text {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  text-transform: lowercase;
  white-space: nowrap;
}

.header-actions {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.header-settings {
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: center;
}

.header-settings-inner {
  font-family: var(--font-mono);
  display: flex;
  align-items: center;
  gap: 1rem;
  /* flex-wrap: wrap; */
  margin-top: 0.7rem;
  padding-top: 0.7rem;
}

#build-name {
  flex: 0 1 480px;
  min-width: 180px;
  font-weight: 700;
  padding: 0.4rem 0.5rem;
  border: 1.5px solid var(--border);
  border-radius: 0;
  background: var(--surface);
}

.setting {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
}

.setting select,
.setting input {
  padding: 0.35rem 0.4rem;
  border: 1.5px solid var(--border);
  border-radius: 0;
  background: var(--surface);
  color: var(--ink);
  text-transform: none;
  letter-spacing: 0;
}

.theme-toggle {
  flex-direction: column;
  gap: 0.15rem;
  align-items: center;
  line-height: 1;
}

.theme-toggle #theme-glyph {
  font-size: 1.1rem;
}

.theme-toggle #theme-label {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.15em;
}

/* ---------- Summary bar ---------- */

.summary-bar {
  position: sticky;
  top: 0;
  z-index: 40;
  background: var(--strong-bg);
  color: var(--strong-fg);
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
  justify-content: center;
  padding: 0.6rem 1rem;
  border-bottom: 1px solid var(--strong-bg);
  border-top: 1px solid var(--border);
}

.summary-item {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  min-width: 90px;
  border-right: 1px solid var(--strong-fg);
  padding-right: 2rem;
}

.summary-item:last-child {
  border-right: none;
}

.summary-label {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  opacity: 0.72;
}

.summary-value {
  font-family: var(--font-mono);
  font-size: 1.15rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
}

.summary-sub {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  opacity: 0.8;
  font-variant-numeric: tabular-nums;
}

/* ---------- Main ---------- */

.app-main {
  max-width: 1280px;
  margin: 1rem auto;
  padding: 0 1rem;
}

.app-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 260px;
  align-items: start;
}

.app-content {
  min-width: 0;
}

.app-sidebar {
  position: sticky;
  top: 180px;
  background: var(--surface);
  border-left: 1px solid var(--border);
  border-top: 1px solid var(--border);
  padding: 1rem;
}

.sidebar-title {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--text-muted);
  margin-bottom: 0.8rem;
}

.sidebar-actions {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.sidebar-actions .btn {
  width: 100%;
  justify-content: space-between;
}

.sidebar-note {
  margin-top: 0.9rem;
  padding-top: 0.7rem;
  border-top: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
}

.category-section {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 0;
  margin-bottom: 1rem;
  overflow: hidden;
}

.category-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.65rem 0.9rem;
  background: var(--surface-alt);
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}

.category-toggle {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  background: none;
  border: none;
  padding: 0;
  font-size: inherit;
}

.category-index {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.78rem;
  color: var(--text-muted);
  letter-spacing: 0.05em;
}

.category-caret {
  color: var(--text-muted);
  width: 1em;
  text-align: center;
  font-family: var(--font-mono);
}

.category-title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--ink);
  letter-spacing: -0.01em;
}

.category-subtotal {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
  flex-wrap: wrap;
}

.category-subtotal span {
  white-space: nowrap;
}

.cat-total-price {
  font-weight: 700;
  color: var(--ink);
}

.acquired-badge {
  background: var(--accent);
  color: var(--accent-ink);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.15rem 0.5rem;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.acquired-badge::before {
  content: "▮";
  font-size: 0.6rem;
}

.category-body {
  padding: 0.5rem 0.9rem 0.9rem;
}

.items-table {
  display: flex;
  flex-direction: column;
}

/* ---------- Item rows ---------- */

.item-row {
  display: grid;
  grid-template-columns: 2.2rem minmax(0, 1fr) auto auto;
  align-items: center;
  gap: 0.6rem;
  padding: 0.5rem 0.7rem;
  border-bottom: 1px solid var(--border);
}

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

.item-row.acquired {
  background: var(--acquired-bg);
}

.item-row.acquired .item-name,
.item-row.acquired .item-brand,
.item-row.acquired .item-notes {
  color: var(--acquired-text);
}

.item-row.acquired .item-name {
  text-decoration: line-through;
  text-decoration-color: var(--acquired-text);
}

.item-row-default {
  background: var(--surface-alt);
}

.item-default-icon {
  color: var(--text-muted);
  text-align: center;
}

.item-hint {
  color: var(--text-muted);
  font-style: italic;
}

.item-main {
  min-width: 0;
}

.item-name {
  font-weight: 700;
}

.item-qty {
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  margin-left: 0.3rem;
}

.item-sub {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--text-muted);
}

.item-notes {
  white-space: pre-wrap;
}

.item-link {
  color: var(--ink);
  font-weight: 700;
  text-decoration: none;
  border-bottom: 1px solid var(--ink);
}

.item-link:hover {
  background: var(--ink);
  color: var(--bg);
  text-decoration: none;
}

.item-figures {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.item-price {
  font-weight: 700;
}

.item-weight {
  font-size: 0.72rem;
  color: var(--text-muted);
}

.item-actions {
  display: flex;
  gap: 0.25rem;
}

/* acquired checkbox */

.acquired-check {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  position: relative;
  width: 1.4rem;
  height: 1.4rem;
  cursor: pointer;
}

.acquired-check input {
  position: absolute;
  opacity: 0;
  width: 100%;
  height: 100%;
  margin: 0;
  cursor: pointer;
}

.acquired-check .checkmark {
  width: 1.15rem;
  height: 1.15rem;
  border: 2px solid var(--ink);
  border-radius: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: background 0.1s, border-color 0.1s;
}

.acquired-check .checkmark::after {
  content: "✓";
  color: var(--strong-fg);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  opacity: 0;
  line-height: 1;
}

.acquired-check input:checked + .checkmark {
  background: var(--ink);
  border-color: var(--ink);
}

.acquired-check input:checked + .checkmark::after {
  opacity: 1;
}

.acquired-check input:focus-visible + .checkmark {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}

/* ---------- Add / edit rows ---------- */

.add-row {
  display: grid;
  grid-template-columns: minmax(120px, 1.4fr) minmax(90px, 1fr) 90px 100px 60px minmax(120px, 1fr) minmax(110px, 1fr) auto;
  gap: 0.4rem;
  padding: 0.5rem 0.7rem;
  border-top: 1px solid var(--border);
  background: var(--surface-alt);
  align-items: center;
}

.add-field {
  width: 100%;
  padding: 0.4rem 0.45rem;
  border: 1.5px solid var(--border);
  border-radius: 0;
  background: var(--surface);
  color: var(--ink);
}

.add-field::placeholder {
  color: var(--text-muted);
  opacity: 1;
}

.edit-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 0.5rem;
  padding: 0.6rem 0.7rem;
  border-bottom: 1px solid var(--border);
  background: var(--surface-alt);
  border-left: 4px solid var(--accent);
}

.edit-field {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
}

.edit-field input {
  padding: 0.4rem 0.45rem;
  border: 1.5px solid var(--border);
  border-radius: 0;
  background: var(--surface);
  color: var(--ink);
  font-size: 0.9rem;
  text-transform: none;
  letter-spacing: 0;
}

.edit-field-wide {
  grid-column: span 1;
}

.edit-actions {
  display: flex;
  gap: 0.5rem;
  align-items: flex-end;
  grid-column: 1 / -1;
}

.items-empty {
  padding: 0.5rem 0.7rem;
  color: var(--text-muted);
  font-size: 0.85rem;
  font-style: italic;
  border-bottom: 1px solid var(--border);
}

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: 0;
  padding: 0.45rem 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  transition: background 0.08s, color 0.08s;
  color: var(--ink);
  white-space: nowrap;
}

.btn:hover {
  background: var(--ink);
  color: var(--bg);
}

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-ink);
}

.btn-primary:hover {
  background: var(--ink);
  color: var(--bg);
  border-color: var(--ink);
}

.btn-primary:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.btn-primary:disabled:hover {
  background: var(--accent);
  color: var(--accent-ink);
  border-color: var(--accent);
}

.btn-secondary {
  background: var(--strong-bg);
  border-color: var(--strong-bg);
  color: var(--strong-fg);
}

.btn-secondary:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-ink);
}

.btn-danger {
  background: var(--surface);
  border-color: var(--danger);
  color: var(--danger);
}

.btn-danger:hover {
  background: var(--danger);
  color: #fff;
  border-color: var(--danger);
}

.btn-ghost {
  background: transparent;
  border-color: transparent;
  color: var(--text-muted);
}

.btn-ghost:hover {
  background: var(--surface-alt);
  color: var(--ink);
  border-color: var(--border);
}

.btn-small {
  padding: 0.3rem 0.6rem;
  font-size: 0.66rem;
}

.btn-icon {
  padding: 0.25rem 0.45rem;
  font-size: 0.9rem;
  line-height: 1;
  border-color: transparent;
  background: transparent;
}

.btn-icon:hover {
  background: var(--ink);
  color: var(--bg);
  border-color: var(--ink);
}

.btn-undo {
  margin-left: 0.6rem;
  background: var(--bg);
  border-color: var(--ink);
  color: var(--ink);
  font-weight: 700;
}

.btn-undo:hover {
  background: var(--accent);
  color: var(--accent-ink);
  border-color: var(--accent);
}

/* Arrow affordance on primary sidebar/large CTAs */
.sidebar-actions .btn-primary::after,
.btn-undo::after {
  content: "↗";
  font-weight: 700;
}

/* ---------- Modal ---------- */

.modal-backdrop {
  position: fixed;
  inset: 0;
  background: var(--dragging);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
  padding: 1rem;
}

.modal-backdrop[hidden] {
  display: none;
}

.modal {
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: 0;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.25);
  max-width: 480px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.9rem 1rem;
  border-bottom: 1px solid var(--border);
  background: var(--strong-bg);
  color: var(--strong-fg);
}

.modal-header h2 {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.modal-header .modal-close {
  color: var(--strong-fg);
  border-color: var(--strong-fg);
}

.modal-header .modal-close:hover {
  background: var(--accent);
  color: var(--accent-ink);
  border-color: var(--accent);
}

.modal-body {
  padding: 1rem;
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.6rem;
  padding: 0.8rem 1rem;
  border-top: 1px solid var(--border);
}

.modal-hint {
  margin-top: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--danger);
  background: var(--surface-alt);
  border: 1.5px solid var(--danger);
  border-radius: 0;
  padding: 0.5rem 0.7rem;
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  margin-top: 0.6rem;
}

.form-field span {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
}

.form-field input {
  padding: 0.5rem 0.55rem;
  border: 1.5px solid var(--border);
  border-radius: 0;
  background: var(--surface);
  color: var(--ink);
  font-size: 1rem;
}

.form-field input:focus,
.add-field:focus,
.edit-field input:focus,
#build-name:focus,
.setting input:focus,
.setting select:focus {
  outline: 2px solid var(--focus);
  outline-offset: 1px;
}

/* ---------- Toast ---------- */

.toast {
  position: fixed;
  bottom: 1rem;
  left: 50%;
  transform: translateX(-50%);
  background: var(--strong-bg);
  color: var(--strong-fg);
  border: 1.5px solid var(--strong-bg);
  padding: 0.6rem 1rem;
  border-radius: 0;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.25);
  z-index: 300;
  max-width: 90vw;
  font-family: var(--font-sans);
  font-size: 0.88rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.toast-error {
  background: var(--danger);
  border-color: var(--danger);
  color: #fff;
}

.toast-undo {
  background: var(--strong-bg);
  color: var(--strong-fg);
}

/* ---------- Builds list (no active build) ---------- */

.builds-list {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 0;
  padding: 1rem;
}

.builds-list h2 {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  margin-bottom: 0.8rem;
  color: var(--text-muted);
}

.builds-list ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.build-list-btn {
  width: 100%;
  text-align: left;
  justify-content: flex-start;
  padding: 0.5rem 0.7rem;
}

.build-list-btn:hover {
  background: var(--accent);
  color: var(--accent-ink);
  border-color: var(--accent);
}

/* ---------- Responsive ---------- */

@media (max-width: 1080px) {
  .app-layout {
    grid-template-columns: 1fr;
  }

  .app-sidebar {
    position: static;
    border-left: none;
    border-top: 1px solid var(--border);
  }

  .sidebar-actions {
    flex-direction: row;
    flex-wrap: wrap;
  }

  .sidebar-actions .btn {
    width: auto;
    justify-content: center;
  }
}

@media (max-width: 700px) {
  .add-row {
    grid-template-columns: 1fr 1fr;
  }

  .add-row .add-notes,
  .add-row .add-link {
    grid-column: span 1;
  }
}

@media (max-width: 600px) {
  .header-top,
  .header-settings {
    gap: 0.6rem;
  }

  .summary-bar {
    justify-content: flex-start;
    gap: 0;
    overflow-x: auto;
  }

  .summary-item {
    border-right: 1px solid var(--strong-fg);
    padding-right: 1rem;
    margin-right: 1rem;
  }

  .category-header {
    gap: 0.6rem;
  }

  .category-subtotal {
    margin-left: 0;
    order: 3;
    width: 100%;
  }

  .item-row {
    grid-template-columns: 2rem 1fr auto;
    row-gap: 0.3rem;
  }

  .item-figures {
    grid-column: 2;
    flex-direction: row;
    justify-content: flex-start;
    gap: 0.8rem;
    align-items: baseline;
  }

  .item-actions {
    grid-column: 3;
    grid-row: 1;
  }

  .item-price::before {
    content: "";
  }

  .add-row {
    grid-template-columns: 1fr 1fr;
  }

  .add-row .add-name {
    grid-column: 1 / -1;
  }

  .sidebar-actions .btn {
    flex: 1 1 40%;
    justify-content: center;
  }
}