:root {
  --bg: #f4f6f8;
  --panel: #ffffff;
  --panel-border: #d7dde5;
  --text: #17202a;
  --muted: #637083;

  --primary: #1f6feb;
  --primary-dark: #174ea6;

  --danger: #b42318;
  --danger-bg: #fff0ed;

  /*
    Backfärger
    ------------------------------------------------
    Vanlig back      = .rack-slot
    Räknad back      = .rack-slot.counted
    Tom layoutplats  = .rack-slot.empty
    Back med 0 antal = .rack-slot.slot-zero
  */

  /* Vanlig back */
  --slot-bg: #ffffff;
  --slot-border: #243047;
  --slot-text: #17202a;
  --slot-count-text: #111827;

  /* Back med distrikt men 0 tidningar av vald titel */
  --slot-zero-bg: #f8fafc;
  --slot-zero-border: #9aa6b4;
  --slot-zero-text: #9aa6b4;

  /* Helt tom plats i layouten */
  --slot-empty-bg: #eef2f6;
  --slot-empty-border: #c8d1dc;
  --slot-empty-text: #637083;

  /* Räknad back */
  --counted-bg: #d8f3dc;
  --counted-border: #2d7d46;
  --counted-text: #14532d;

  --shadow: 0 8px 24px rgba(12, 27, 54, 0.08);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
}

button,
input,
select {
  font: inherit;
}

button {
  border: 0;
  border-radius: 10px;
  background: var(--primary);
  color: #fff;
  padding: 0.7rem 1rem;
  font-weight: 700;
  cursor: pointer;
  min-height: 42px;
}

button:hover {
  background: var(--primary-dark);
}

button.secondary {
  background: #e8eef7;
  color: #16365f;
}

button.secondary:hover {
  background: #d7e3f3;
}

button.danger-light {
  background: var(--danger-bg);
  color: var(--danger);
}

button.danger-light:hover {
  background: #ffe0da;
}

button:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

input,
select {
  width: 100%;
  border: 1px solid var(--panel-border);
  border-radius: 10px;
  padding: 0.62rem 0.7rem;
  background: #fff;
  color: var(--text);
  min-height: 42px;
}

label {
  display: grid;
  gap: 0.35rem;
  font-size: 0.92rem;
  font-weight: 700;
  color: #2f3b4a;
}

hr {
  border: 0;
  border-top: 1px solid var(--panel-border);
  margin: 1.25rem 0;
}

.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 1rem clamp(1rem, 3vw, 2rem);
  background: #111827;
  color: #fff;
}

.app-title {
  font-size: 1.2rem;
  font-weight: 800;
}

.app-subtitle {
  color: #cbd5e1;
  font-size: 0.9rem;
}

.app-header nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
}

.app-header a {
  color: #fff;
  text-decoration: none;
  background: rgba(255, 255, 255, 0.12);
  padding: 0.55rem 0.8rem;
  border-radius: 999px;
}

.page {
  width: min(1500px, 100%);
  margin: 0 auto;
  padding: 1rem;
}

.panel,
.visualization-page {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 18px;
  box-shadow: var(--shadow);
  padding: 1rem;
  margin-bottom: 1rem;
}

.panel-header,
.visualization-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1rem;
}

.panel-header.compact {
  margin-bottom: 0.75rem;
}

.header-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.65rem;
}

h1,
h2 {
  margin: 0;
  line-height: 1.2;
}

p {
  margin: 0.35rem 0 0;
  color: var(--muted);
}

.controls-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(170px, 1fr));
  gap: 0.75rem;
}

.controls-grid.three {
  grid-template-columns: 1.2fr 0.65fr 1fr;
}

.actions-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: 0.85rem;
}

.upload-row {
  display: grid;
  grid-template-columns: minmax(220px, 1fr) auto auto;
  align-items: end;
  gap: 0.75rem;
  margin-top: 0.85rem;
  padding-top: 0.85rem;
  border-top: 1px solid var(--panel-border);
}

.checkbox-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  min-height: 42px;
  font-weight: 700;
}

.checkbox-row input {
  width: 1.1rem;
  min-height: 0;
  height: 1.1rem;
  margin: 0;
}

.message {
  margin-top: 0.85rem;
  padding: 0.75rem 0.9rem;
  border-radius: 12px;
  background: #eef6ff;
  border: 1px solid #c9e3ff;
  color: #16365f;
  font-weight: 650;
}

.message.error {
  background: #fff0ed;
  border-color: #ffd0c7;
  color: #8f1d14;
}

.message.success {
  background: #ecfdf3;
  border-color: #b8eacb;
  color: #195b32;
}

.muted {
  color: var(--muted);
}

.summary-box {
  min-width: 150px;
  text-align: center;
  border: 1px solid var(--panel-border);
  border-radius: 16px;
  padding: 0.7rem 1rem;
  background: #f8fafc;
}

.summary-label {
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 700;
}

.summary-value {
  font-size: clamp(2rem, 5vw, 3.6rem);
  font-weight: 900;
  line-height: 1;
}

.rack-selector {
  display: flex;
  align-items: end;
  gap: 1rem;
  margin-bottom: 1rem;
}

.rack-selector label {
  width: min(420px, 100%);
}

.screen-mode-controls {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.screen-mode-selects {
  display: grid;
  grid-template-columns: minmax(180px, 280px) minmax(180px, 280px);
  gap: 0.75rem;
}

.rack-viewport {
  touch-action: pan-y;
  user-select: none;
}

.rack-grid {
  display: grid;
  gap: 0.7rem;
  width: 100%;
}

.rack-grid.empty-state {
  display: block;
  padding: 2rem;
  text-align: center;
  color: var(--muted);
  background: #f8fafc;
  border-radius: 16px;
}

/*
  ==========================================================
  BACKAR / RACK SLOTS
  ==========================================================
*/

/* Vanlig back */
.rack-slot {
  min-height: clamp(110px, 17vh, 190px);
  border: 2px solid var(--slot-border);
  border-radius: 14px;
  background: var(--slot-bg);
  color: var(--slot-text);
  display: grid;
  grid-template-rows: auto 1fr auto;
  padding: 0.7rem;
  cursor: pointer;
  transition:
    transform 0.12s ease,
    background 0.12s ease,
    border-color 0.12s ease,
    color 0.12s ease;
}

.rack-slot:active {
  transform: scale(0.985);
}

/* Räknad back */
.rack-slot.counted {
  background: var(--counted-bg);
  border-color: var(--counted-border);
  color: var(--counted-text);
}

/* Helt tom plats i layouten */
.rack-slot.empty {
  border-style: dashed;
  background: var(--slot-empty-bg);
  border-color: var(--slot-empty-border);
  color: var(--slot-empty-text);
  cursor: default;
}

/* Back som har distrikt men 0 tidningar av vald titel */
.rack-slot.slot-zero {
  background: var(--slot-zero-bg);
  border-color: var(--slot-zero-border);
  color: var(--slot-zero-text);
}

/*
  Text inne i backarna
*/

.slot-district {
  font-weight: 850;
  font-size: clamp(0.9rem, 1.4vw, 1.3rem);
  color: inherit;
}

.slot-product {
  align-self: end;
  color: var(--muted);
  font-weight: 800;
  text-transform: uppercase;
}

/* Det stora antalet */
.slot-count {
  align-self: center;
  justify-self: center;
  font-size: clamp(2.6rem, 6vw, 6rem);
  line-height: 1;
  font-weight: 950;
  color: var(--slot-count-text);
}

/* Antal i räknad back */
.rack-slot.counted .slot-count {
  color: var(--counted-text);
}

/* Antal i back med 0 tidningar */
.rack-slot.slot-zero .slot-count {
  color: var(--slot-zero-text);
}

/* Produkttext i räknad back */
.rack-slot.counted .slot-product {
  color: var(--counted-text);
}

/* Produkttext i tom/0-back */
.rack-slot.empty .slot-product,
.rack-slot.slot-zero .slot-product {
  color: var(--slot-zero-text);
}

.slot-status {
  font-size: 0.8rem;
  font-weight: 800;
  color: var(--counted-text);
  text-align: right;
  min-height: 1rem;
}

.rack-slot:not(.counted) .slot-status {
  color: transparent;
}

.warnings {
  margin-top: 1rem;
  display: grid;
  gap: 0.5rem;
}

.warning-item {
  padding: 0.65rem 0.8rem;
  background: #fff7ed;
  border: 1px solid #fed7aa;
  border-radius: 10px;
  color: #7c2d12;
}

.editor-grid {
  display: grid;
  grid-template-columns: minmax(260px, 340px) 1fr;
  gap: 1rem;
}

.editor-sidebar,
.editor-main {
  border: 1px solid var(--panel-border);
  border-radius: 16px;
  padding: 1rem;
  background: #fbfcfe;
}

.editor-sidebar {
  display: grid;
  align-content: start;
  gap: 0.85rem;
}

.inline-form {
  display: flex;
  gap: 0.5rem;
}

.inline-form input {
  min-width: 0;
}

.full-width {
  width: 100%;
}

.size-controls {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.size-controls input {
  max-width: 90px;
}

.layout-editor-grid {
  display: grid;
  gap: 0.45rem;
  margin-top: 1rem;
  overflow-x: auto;
}

.layout-editor-grid input {
  min-width: 120px;
  text-align: center;
  font-weight: 750;
}

@media (max-width: 900px) {
  .controls-grid,
  .controls-grid.three,
  .upload-row,
  .editor-grid {
    grid-template-columns: 1fr;
  }

  .panel-header,
  .visualization-header,
  .rack-selector,
  .app-header {
    flex-direction: column;
    align-items: stretch;
  }

  .summary-box {
    text-align: left;
  }

  .header-actions,
  .screen-mode-controls {
    justify-content: stretch;
  }

  .screen-mode-selects {
    grid-template-columns: 1fr;
    width: 100%;
  }
}

body.screen-mode {
  overflow: hidden;
  background: #f8fafc;
}

.screen-mode .app-header,
.screen-mode .panel,
.screen-mode .rack-selector,
.screen-mode .warnings {
  display: none !important;
}

.screen-mode .page {
  width: 100%;
  height: 100dvh;
  padding: 0;
}

.screen-mode .visualization-page {
  height: 100dvh;
  margin: 0;
  border: 0;
  border-radius: 0;
  box-shadow: none;
  padding: clamp(0.6rem, 1.4vw, 1rem);
  display: grid;
  grid-template-rows: auto auto minmax(0, 1fr);
  gap: clamp(0.55rem, 1.2vw, 0.9rem);
  background: #f8fafc;
}

.screen-mode .screen-mode-controls {
  margin: 0;
  padding: 0.65rem;
  border: 1px solid var(--panel-border);
  border-radius: 12px;
  background: #fff;
}

.screen-mode .visualization-header {
  align-items: center;
  margin: 0;
}

.screen-mode .rack-viewport {
  min-height: 0;
  overflow: hidden;
}

.screen-mode .rack-grid {
  height: 100%;
  gap: clamp(0.45rem, 1vw, 0.75rem);
  grid-auto-rows: minmax(0, 1fr);
}

.screen-mode .rack-slot {
  min-height: 0;
  height: 100%;
  padding: clamp(0.55rem, 1.1vw, 0.85rem);
  border-radius: 10px;
}

.screen-mode .slot-count {
  font-size: clamp(3rem, 9vw, 8rem);
}

.screen-mode .slot-district {
  font-size: clamp(1rem, 1.8vw, 1.6rem);
}

.screen-mode .slot-product,
.screen-mode .slot-status {
  font-size: clamp(0.75rem, 1.2vw, 1rem);
}

@media (max-width: 700px) {
  .screen-mode .visualization-page {
    grid-template-rows: auto auto minmax(0, 1fr);
  }

  .screen-mode .screen-mode-controls,
  .screen-mode .visualization-header {
    align-items: stretch;
    flex-direction: column;
  }
}

@media print {
  body {
    background: #fff;
  }

  .no-print,
  .app-header,
  .panel,
  .rack-selector,
  .warnings {
    display: none !important;
  }

  .page {
    padding: 0;
    width: 100%;
  }

  .visualization-page {
    border: 0;
    box-shadow: none;
    padding: 0;
    margin: 0;
  }

  .rack-slot {
    min-height: 105px;
    break-inside: avoid;
  }

  .slot-count {
    font-size: 44px;
  }
}