/* ---------------- TOKENS ---------------- */
:root {
  /* =========================================================
     COLOR TOKENS
  ========================================================= */
  --color-bg: #020617;
  --color-surface: #020617;
  --color-surface-alt: #081226;
  --color-surface-soft: #0f172a;
  --color-surface-raised: #111827;

  --color-border: #334155;
  --color-border-soft: #1e293b;
  --color-border-strong: #475569;

  --color-text: #e2e8f0;
  --color-text-soft: #cbd5e1;
  --color-text-muted: #94a3b8;
  --color-text-dim: #64748b;
  --color-text-accent: #7dd3fc;

  --color-primary: #0ea5e9;
  --color-primary-hover: #0284c7;
  --color-primary-active: #0369a1;

  --color-primary-strong: #5b8af0;
  --color-primary-strong-hover: #4c78d8;
  --color-primary-strong-active: #3f67c2;

  --color-secondary: #1e293b;
  --color-secondary-hover: #273449;
  --color-secondary-active: #334155;

  --color-success: #86efac;
  --color-success-soft: #a9cbb5;

  --color-warning: #f59e0b;
  --color-warning-strong: #fbbf24;
  --color-warning-soft: #d9b38c;

  --color-danger: #ef4444;
  --color-danger-soft: #d9a3a3;
  --color-danger-border: #7f1d1d;
  --color-danger-bg: rgba(127, 29, 29, 0.15);
  --color-danger-text: #fecaca;

  /* SVG / DRAWING */
  --color-panel-full: #1e293b;
  --color-panel-full-stroke: #64748b;
  --color-panel-cut: #111827;
  --color-panel-cut-stroke: #f87171;
  --color-opening-fill: rgba(239, 68, 68, 0.25);
  --color-opening-stroke: #ef4444;
  --color-rib-line: #22c55e;
  --color-seam-line: #e2e8f0;
  --color-dimension-line: #64748b;
  --color-tick: #ffffff;

  /* =========================================================
     FONT TOKENS
  ========================================================= */
  --font-ui: system-ui, sans-serif;
  --font-mono: "Fira Code", monospace;

  /* =========================================================
     TYPE TOKENS
  ========================================================= */
  --text-xs: 10px;
  --text-sm: 12px;
  --text-md: 14px;
  --text-lg: 16px;
  --text-xl: 18px;

  --line-sm: 1.2;
  --line-md: 1.4;
  --line-lg: 1.5;

  --weight-md: 500;
  --weight-sb: 600;
  --weight-bd: 700;

  --track-sm: 0.02em;
  --track-md: 0.08em;
  --track-lg: 0.12em;

  /* =========================================================
     SPACING TOKENS
  ========================================================= */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 12px;
  --space-lg: 16px;
  --space-xl: 24px;

  /* =========================================================
     RADIUS TOKENS
  ========================================================= */
  --radius-xs: 6px;
  --radius-sm: 8px;
  --radius-md: 10px;
  --radius-lg: 12px;
  --radius-xl: 999px;

  /* =========================================================
     BORDER TOKENS
  ========================================================= */
  --border-xs: 1px;
  --border-sm: 1.2px;
  --border-md: 2px;

  /* =========================================================
     LAYOUT TOKENS
  ========================================================= */
  --layout-width: 900px;
  --layout-bottom-pad: 240px;

  /* =========================================================
     COMPONENT TOKENS
  ========================================================= */

  /* cards */
  --card-padding: 14px;
  --card-gap: 14px;
  --card-radius: var(--radius-sm);
  --card-border: var(--border-xs) solid var(--color-border);

  /* fields */
  --field-gap-x: 12px;
  --field-gap-y: 10px;

  /* labels */
  --label-size: var(--text-sm);
  --label-weight: var(--weight-sb);
  --label-color: var(--color-text-soft);
  --label-spacing: var(--track-md);
  --label-gap: var(--space-xs);

  /* inputs */
  --input-pad-y: 10px;
  --input-pad-x: 12px;
  --input-radius: var(--radius-xs);
  --input-size: var(--text-lg);
  --input-bg: var(--color-surface);
  --input-border: var(--color-border);
  --input-text: var(--color-text);

  /* helper text */
  --helper-size: var(--text-sm);
  --helper-color: var(--color-text-accent);
  --helper-gap: var(--space-xs);

  /* buttons */
  --button-pad-y: 10px;
  --button-pad-x: 12px;
  --button-radius: var(--radius-xs);
  --button-size: var(--text-md);
  --button-weight: var(--weight-bd);

  /* summary */
  --summary-size: 11px;
  --summary-line: var(--line-md);
  --summary-color: var(--color-text-muted);
  --summary-gap: 6px;

  /* cut list */
  --cut-index-width: 42px;
  --cut-arrow-width: 30px;
  --cut-notes-width: 120px;
  --cut-row-gap: var(--space-sm);
  --cut-row-pad-y: var(--space-md);
  --cut-value-size: var(--text-xl);
  --cut-subvalue-size: 11px;
  --cut-notes-size: 11px;

  /* keyboard */
  --keyboard-width: 420px;
  --keyboard-width-desktop: 480px;
  --keyboard-pad: var(--space-md);
  --keyboard-gap: var(--space-sm);
  --keyboard-key-radius: var(--radius-sm);
  --keyboard-key-size: 22px;
  --keyboard-key-pad-y: 14px;
  --keyboard-display-radius: var(--radius-sm);
  --keyboard-display-pad-y: 10px;
  --keyboard-display-pad-x: 12px;
}

/* ---------------- BASE ---------------- */

body {
  margin: 0;
  font-family: var(--font-ui);
  background: var(--color-bg);
  color: var(--color-text);
  padding-bottom: var(--layout-bottom-pad);
}

.app {
  padding: var(--space-lg);
  max-width: var(--layout-width);
  margin: auto;
}

h2,
h3,
h4 {
  margin: 0 0 10px 0;
}

h2 {
  font-size: 28px;
  line-height: 1.1;
  margin-bottom: 14px;
}

.card {
  background: var(--color-surface);
  border: var(--card-border);
  padding: var(--card-padding);
  margin-bottom: var(--card-gap);
  border-radius: var(--card-radius);
}

label {
  display: block;
  margin-bottom: var(--label-gap);
  font-weight: var(--label-weight);
  font-size: var(--label-size);
  letter-spacing: var(--label-spacing);
  text-transform: uppercase;
  color: var(--label-color);
}

input,
select {
  width: 100%;
  padding: var(--input-pad-y) var(--input-pad-x);
  margin-bottom: 6px;
  background: var(--input-bg);
  border: var(--border-xs) solid var(--input-border);
  color: var(--input-text);
  border-radius: var(--input-radius);
  box-sizing: border-box;
  font-family: inherit;
  font-size: var(--input-size);
  -webkit-text-size-adjust: 100%;
}

input.measure-input {
  font-family: var(--font-mono);
}

button {
  width: 100%;
  padding: var(--button-pad-y) var(--button-pad-x);
  background: var(--color-primary);
  border: none;
  border-radius: var(--button-radius);
  color: white;
  font-weight: var(--button-weight);
  font-size: var(--button-size);
  cursor: pointer;
}

button:active {
  transform: scale(0.98);
}

/* ---------------- FIELD LAYOUT ---------------- */

.field-grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--field-gap-y) var(--field-gap-x);
  margin-bottom: var(--space-xs);
}

.field-group {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.field-group input,
.field-group select {
  margin-bottom: 0;
}

.measure-helper {
  min-height: 15px;
  margin-top: var(--helper-gap);
  font-family: var(--font-mono);
  font-size: var(--helper-size);
  line-height: var(--line-sm);
  color: var(--helper-color);
  opacity: 0.95;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.measure-helper.empty {
  visibility: hidden;
}

@media (max-width: 430px) {
  .field-grid-2 {
    grid-template-columns: 1fr;
  }
}

/* ---------------- EXPORT BUTTONS ---------------- */

.export-row {
  display: flex;
  gap: var(--space-sm);
  margin-top: var(--space-xs);
}

.btn-secondary {
  background: var(--color-secondary);
  border: var(--border-xs) solid var(--color-border);
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  padding: 9px 10px;
  border-radius: var(--radius-md);
  transition: all 0.15s ease;
}

.btn-secondary:hover {
  background: var(--color-secondary-hover);
  border-color: var(--color-border-strong);
  color: var(--color-text);
}

.btn-secondary:active {
  background: var(--color-secondary-active);
  transform: scale(0.97);
}

/* ---------------- ERROR BOX ---------------- */

.error-box {
  background: rgba(127, 29, 29, 0.2);
  border: var(--border-xs) solid var(--color-danger-border);
  color: var(--color-danger-text);
  border-radius: var(--radius-sm);
  padding: var(--space-md) 14px;
  margin-bottom: var(--space-lg);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
}

.error-box.hidden {
  display: none;
}

/* ---------------- OPENINGS ---------------- */

.opening-form {
  display: flex;
  gap: var(--space-sm);
}

.opening-form input {
  flex: 1;
  margin-bottom: 0;
}

.opening-item {
  background: var(--color-surface);
  border: var(--border-xs) solid var(--color-border);
  padding: var(--space-sm);
  margin-bottom: var(--space-sm);
  border-radius: var(--radius-xs);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
}

.delete-btn {
  width: auto;
  min-width: 42px;
  padding: 6px 10px;
  background: var(--color-danger);
  flex-shrink: 0;
}

#addOpeningBtn {
  background: var(--color-primary-strong);
  color: white;
  border: none;
  border-radius: var(--radius-md);
  padding: 14px;
  font-weight: var(--weight-sb);
  transition: all 0.15s ease;
}

#addOpeningBtn:hover {
  background: var(--color-primary-strong-hover);
}

#addOpeningBtn:active {
  transform: scale(0.97);
  background: var(--color-primary-strong-active);
}

/* ---------------- SVG CONTAINER ---------------- */

#wallSvg {
  width: 100%;
  display: block;
  background: var(--color-surface-alt);
  border-radius: var(--radius-sm);
  min-height: 100px;
}

/* ---------------- SVG CLASSES ---------------- */

.wall-outline {
  fill: var(--color-surface-soft);
  stroke: var(--color-text-muted);
  stroke-width: 1.2;
}

.panel-full {
  fill: var(--color-panel-full);
  stroke: var(--color-panel-full-stroke);
  stroke-width: 1;
  opacity: 0.9;
}

.panel-cut {
  fill: var(--color-panel-cut);
  stroke: var(--color-panel-cut-stroke);
  stroke-width: 2;
}

.opening-box {
  fill: var(--color-opening-fill);
  stroke: var(--color-opening-stroke);
  stroke-width: 2;
}

.panel-seam {
  stroke: var(--color-seam-line);
  stroke-width: 1.6;
}

.rib-line {
  stroke: var(--color-rib-line);
  stroke-width: 1;
  stroke-dasharray: 2 6;
  opacity: 0.22;
}

.dimension-line {
  stroke: var(--color-dimension-line);
  stroke-width: 1;
}

.tick {
  stroke: var(--color-tick);
  stroke-width: 2;
}

.dimension-text,
.total-text,
.panel-label {
  font-family: var(--font-mono);
}

.dimension-text {
  fill: var(--color-text);
  font-size: var(--text-xs);
}

.total-text {
  font-size: var(--text-sm);
}

.panel-label {
  fill: var(--color-text-soft);
  font-size: 11px;
}

.ridge-label {
  font-size: 11px;
  fill: #f1f5f9;
}

/* ---------------- REPORTS ---------------- */

#openingReport,
.opening-report-block,
.panel-cut-list,
.warning-box,
.good-status {
  font-family: var(--font-mono);
}

#panelSummary {
  font-family: var(--font-mono);
  font-size: var(--summary-size);
  line-height: var(--summary-line);
  color: var(--summary-color);
}

#panelSummary p {
  margin: 0 0 var(--summary-gap) 0;
}

#panelSummary p:last-child {
  margin-bottom: 0;
}

#openingReport p {
  margin: 0 0 10px 0;
}

#openingReport {
  margin-top: 0;
}

.opening-report-block {
  border-top: var(--border-xs) solid var(--color-border);
  padding-top: var(--space-md);
  margin-top: var(--space-md);
  font-size: var(--text-sm);
}

.panel-cut-list ul,
.warning-box ul {
  margin: 6px 0 0 18px;
  padding: 0;
}

.panel-cut-list li {
  margin-bottom: var(--space-xs);
}

.warning-box {
  margin-top: 10px;
  padding: 10px;
  border: var(--border-xs) solid var(--color-danger-border);
  background: var(--color-danger-bg);
  border-radius: var(--radius-xs);
  color: var(--color-danger-text);
}

.good-status {
  color: var(--color-success);
  font-weight: var(--weight-sb);
}

/* ---------------- CUT LIST ---------------- */

.summary-meta p {
  margin: 0 0 10px 0;
}

.cutlist-card {
  margin-top: 18px;
  border-top: var(--border-xs) solid var(--color-border);
  padding-top: var(--space-lg);
}

.cutlist-header {
  margin-bottom: var(--space-md);
}

.cutlist-header h4 {
  margin: 0 0 var(--space-sm) 0;
  font-size: var(--text-lg);
  color: var(--color-text);
}

.cutlist-subhead {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  font-family: var(--font-mono);
}

.cutlist-table {
  border-top: var(--border-xs) solid var(--color-border);
  border-bottom: var(--border-xs) solid var(--color-border);
}

.cutlist-row {
  display: grid;
  grid-template-columns:
    var(--cut-index-width)
    minmax(0, 1fr)
    var(--cut-arrow-width)
    minmax(0, 1fr)
    var(--cut-notes-width);
  align-items: center;
  gap: var(--cut-row-gap);
  padding: var(--cut-row-pad-y) 0;
  border-bottom: var(--border-xs) solid var(--color-border-soft);
}

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

.cutlist-cell {
  min-width: 0;
}

.cutlist-index {
  text-align: center;
  font-family: var(--font-mono);
  font-size: var(--text-md);
  color: var(--color-text-muted);
  font-weight: var(--weight-bd);
}

.cutlist-main {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.cutlist-value {
  font-family: var(--font-mono);
  font-size: var(--cut-value-size);
  font-weight: var(--weight-bd);
  color: #f8fafc;
  line-height: var(--line-sm);
}

.cutlist-subvalue {
  font-family: var(--font-mono);
  font-size: var(--cut-subvalue-size);
  color: var(--color-text-muted);
  line-height: var(--line-sm);
}

.cutlist-arrow {
  text-align: center;
  font-family: var(--font-mono);
  font-size: var(--cut-value-size);
  font-weight: var(--weight-bd);
  color: var(--color-warning);
}

.cutlist-notes {
  font-family: var(--font-mono);
  font-size: var(--cut-notes-size);
  color: var(--color-warning);
  text-align: right;
  line-height: var(--line-md);
  letter-spacing: 0.04em;
}

.ridge-row .cutlist-value {
  color: var(--color-warning-strong);
}

.ridge-row .cutlist-notes {
  color: var(--color-warning-strong);
  font-weight: var(--weight-bd);
}

.cutlist-footer {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-lg);
  padding-top: var(--space-md);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-text-soft);
}

.cutlist-footer p {
  margin: 0;
}

@media (max-width: 640px) {
  .cutlist-row {
    grid-template-columns: 36px 1fr 24px 1fr;
    gap: 6px;
  }

  .cutlist-notes {
    grid-column: 2 / 5;
    text-align: left;
    padding-top: var(--space-xs);
  }

  .cutlist-value {
    font-size: 15px;
  }

  .cutlist-subvalue {
    font-size: var(--text-xs);
  }
}

/* ---------------- MEASUREMENT KEYBOARD ---------------- */

.measurement-keyboard {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  padding: var(--keyboard-pad);
  background: rgba(2, 6, 23, 0.96);
  border-top: var(--border-xs) solid var(--color-border);
  backdrop-filter: blur(8px);
  z-index: 999;
}

.measurement-keyboard.hidden {
  display: none;
}

.measurement-display-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--keyboard-gap);
  margin: 0 auto 10px auto;
  max-width: var(--keyboard-width);
  padding: var(--keyboard-display-pad-y) var(--keyboard-display-pad-x);
  background: var(--color-surface-raised);
  border: var(--border-xs) solid var(--color-border);
  border-radius: var(--keyboard-display-radius);
}

.measurement-raw {
  font-family: var(--font-mono);
  font-size: var(--text-xl);
  color: var(--color-text);
  min-height: 24px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.measurement-display {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-text-accent);
  text-align: right;
  min-height: 20px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.keyboard-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--keyboard-gap);
  max-width: var(--keyboard-width);
  margin: 0 auto;
}

.keyboard-grid .key-btn:nth-child(-n+12) {
  grid-column: span 4;
}

.keyboard-grid .key-btn:nth-child(n+13) {
  grid-column: span 4;
}

.keyboard-grid .key-btn:nth-child(13),
.keyboard-grid .key-btn:nth-child(14),
.keyboard-grid .key-btn:nth-child(15),
.keyboard-grid .key-btn:nth-child(16) {
  grid-column: span 3;
}

.key-btn {
  width: 100%;
  padding: var(--keyboard-key-pad-y) 0;
  border: var(--border-xs) solid var(--color-border);
  border-radius: var(--keyboard-key-radius);
  background: var(--color-surface-soft);
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: var(--keyboard-key-size);
  font-weight: var(--weight-sb);
}

.key-btn:active {
  transform: scale(0.98);
}

.key-backspace {
  background: var(--color-secondary);
}

.key-confirm {
  background: var(--color-primary);
  color: white;
  font-size: 20px;
}

/* ---------------- COLLAPSIBLE CARDS ---------------- */

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  font-weight: var(--weight-bd);
  user-select: none;
}

.card-body {
  margin-top: 10px;
}

.collapsible > .card-body {
  display: none;
}

.collapsible.open > .card-body {
  display: block;
}

.chevron {
  transition: transform 0.2s ease;
}

.collapsible.open > .card-header .chevron {
  transform: rotate(180deg);
}

@media (min-width: 900px) {
  .measurement-keyboard {
    max-width: var(--keyboard-width-desktop);
    margin: 0 auto;
    left: 50%;
    transform: translateX(-50%);
    border-left: var(--border-xs) solid var(--color-border);
    border-right: var(--border-xs) solid var(--color-border);
    border-top-left-radius: var(--radius-lg);
    border-top-right-radius: var(--radius-lg);
  }
}