/* styles.css — vlastny responzivny layout bez frameworku */

:root {
  --bg: #f4f1ea;
  --panel-bg: #ffffff;
  --border: #d8d2c4;
  --text: #2b2b2b;
  --muted: #6b6b6b;
  --accent: #7c5e3b;
  --accent-dark: #5f482c;
  --focus: #2f6fb0;
  --error: #b3261e;
  --error-bg: #fdecea;
  --warning: #8a6d00;
  --warning-bg: #fff6db;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.12);
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 15px;
  line-height: 1.45;
  color: var(--text);
  background: var(--bg);
}

.app-header {
  padding: 16px 20px;
  background: var(--accent);
  color: #fff;
}

.app-header h1 {
  margin: 0 0 4px;
  font-size: 1.35rem;
}

.app-note {
  margin: 0;
  font-size: 0.85rem;
  opacity: 0.92;
  max-width: 70ch;
}

/* --- Layout: tabovany bocny panel vlavo + velka vizualizacia vpravo --- */
.app-layout {
  display: grid;
  grid-template-columns: 400px minmax(0, 1fr);
  gap: 16px;
  padding: 16px;
  /* Vyplni vysku pod hlavickou, aby vizualizacia mala maximum priestoru. */
  height: calc(100vh - 96px);
  min-height: 520px;
  box-sizing: border-box;
}

.panel {
  background: var(--panel-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 14px;
  min-height: 0; /* dovoli vnutorne skrolovanie v grid bunke */
}

/* Bocny panel: hlavicka tabov fixne, obsah tabu skroluje. */
.panel-sidebar {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  padding: 0;
}

/* Vizualizacia zaberie cely svoj stlpec a centruje obsah. */
.panel-view {
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

@media (max-width: 900px) {
  .app-layout {
    grid-template-columns: minmax(0, 1fr);
    height: auto;
    min-height: 0;
  }

  .panel-sidebar,
  .panel-view {
    overflow: visible;
  }
}

/* --- Taby v bocnom paneli --- */
.tabs {
  display: flex;
  flex: 0 0 auto;
  border-bottom: 1px solid var(--border);
  background: #f3efe7;
  border-radius: var(--radius) var(--radius) 0 0;
}

.tab {
  flex: 1 1 0;
  border: none;
  background: transparent;
  padding: 11px 12px;
  font-family: inherit;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--muted);
  cursor: pointer;
  border-bottom: 2px solid transparent;
}

.tab:hover {
  background: #ece6db;
  color: var(--text);
}

.tab.active {
  color: var(--accent-dark);
  background: var(--panel-bg);
  border-bottom-color: var(--accent);
}

.tab:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: -2px;
}

/* Obsah tabu skroluje samostatne, hlavicka tabov ostava na mieste. */
.tabpanel {
  flex: 1 1 auto;
  overflow-y: auto;
  padding: 14px;
  min-height: 0;
}

.tabpanel[hidden] {
  display: none;
}

@media (max-width: 900px) {
  .tabpanel {
    overflow-y: visible;
    /* Aby dlhy formular nemusel skrolovat vo vnorenom boxe na mobile. */
    max-height: none;
  }
}

/* --- Formular --- */
fieldset {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin: 0 0 14px;
  padding: 10px 12px 12px;
}

legend {
  font-weight: 600;
  font-size: 0.92rem;
  padding: 0 6px;
  color: var(--accent-dark);
}

.field {
  margin-bottom: 10px;
}

.field:last-child {
  margin-bottom: 0;
}

.field label {
  display: block;
  font-size: 0.82rem;
  color: var(--muted);
  margin-bottom: 3px;
}

.field-checkbox {
  display: flex;
  align-items: center;
  gap: 8px;
}

.field-checkbox label {
  margin: 0;
  font-size: 0.92rem;
  color: var(--text);
}

input[type="number"],
input[type="text"],
select {
  width: 100%;
  padding: 7px 9px;
  font-size: 0.95rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: #fff;
  color: var(--text);
}

input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--accent);
}

input:hover:not(:disabled),
select:hover:not(:disabled) {
  border-color: #b9b1a0;
}

input:focus,
select:focus,
button:focus,
.btn:focus-within {
  outline: 2px solid var(--focus);
  outline-offset: 1px;
  border-color: var(--focus);
}

input:disabled,
select:disabled {
  background: #f0eee9;
  color: #a6a298;
  cursor: not-allowed;
}

input[aria-invalid="true"] {
  border-color: var(--error);
  background: var(--error-bg);
}

.field-error {
  display: block;
  min-height: 0;
  color: var(--error);
  font-size: 0.78rem;
  margin-top: 2px;
}

.field-error:empty {
  display: none;
}

.field-hint {
  display: block;
  color: var(--muted);
  font-size: 0.75rem;
  margin-top: 2px;
}

.summary-note {
  font-size: 0.78rem;
  margin: 4px 0 0;
}

/* --- Nadpisy skupin zon vo formulari --- */
.zone-group-title {
  margin: 12px 0 4px;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--accent-dark);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.zone-group-title:first-of-type {
  margin-top: 4px;
}

/* --- View switch --- */
.view-switch {
  display: inline-flex;
  border: 1px solid var(--border);
  border-radius: 999px;
  overflow: hidden;
  margin-bottom: 12px;
  flex: 0 0 auto; /* nezmensuj sa, ked vizualizacia rastie */
  align-self: flex-start;
}

.view-switch button {
  border: none;
  background: #fff;
  padding: 7px 14px;
  font-size: 0.88rem;
  cursor: pointer;
  color: var(--text);
  border-right: 1px solid var(--border);
}

.view-switch button:last-child {
  border-right: none;
}

.view-switch button:hover {
  background: #f0ece3;
}

.view-switch button.active {
  background: var(--accent);
  color: #fff;
}

/* --- SVG --- */
.svg-wrap {
  width: 100%;
  flex: 1 1 auto; /* vyplni zvysok vyskoveho priestoru panelu */
  min-height: 280px;
  background: repeating-linear-gradient(45deg, #fbfaf7, #fbfaf7 10px, #f6f4ef 10px, #f6f4ef 20px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

#cabinet-svg {
  display: block;
  width: 100%;
  height: 100%; /* SVG sa skaluje cez preserveAspectRatio="xMidYMid meet" */
}

.svg-fallback {
  font-size: 0.82rem;
  color: var(--muted);
  margin: 8px 2px 0;
  flex: 0 0 auto;
}

@media (max-width: 900px) {
  /* V stacked rezime nech ma vizualizacia rozumnu fixnu vysku. */
  .svg-wrap {
    height: 60vh;
  }
}

/* --- Akcie / tlacidla --- */
.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 8px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  font-size: 0.88rem;
  font-family: inherit;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: #fff;
  color: var(--text);
  cursor: pointer;
}

.btn:hover {
  background: #f0ece3;
}

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

.btn-primary:hover {
  background: var(--accent-dark);
}

.btn-danger {
  border-color: #d8a7a4;
  color: var(--error);
}

.btn-danger:hover {
  background: var(--error-bg);
}

.btn-file {
  position: relative;
}

/* --- Status --- */
.status-message {
  min-height: 1.2em;
  margin: 0 0 8px;
  font-size: 0.85rem;
  color: var(--accent-dark);
}

.status-message.status-error {
  color: var(--error);
}

.status-message:empty {
  display: none;
}

/* --- Warnings / chyby --- */
.warnings:empty {
  display: none;
}

.alert {
  border-radius: 6px;
  padding: 10px 12px;
  margin-bottom: 12px;
  font-size: 0.85rem;
}

.alert ul {
  margin: 6px 0 0;
  padding-left: 18px;
}

.alert-error {
  background: var(--error-bg);
  border: 1px solid #e3b3af;
  color: var(--error);
}

.alert-warning {
  background: var(--warning-bg);
  border: 1px solid #e5d28a;
  color: var(--warning);
}

/* --- Suhrn --- */
.summary-grid {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 4px 12px;
  margin: 0 0 6px;
}

.summary-grid dt {
  color: var(--muted);
  font-size: 0.85rem;
}

.summary-grid dd {
  margin: 0;
  font-weight: 600;
  text-align: right;
}

/* --- Tabulka dielov --- */
h2 {
  font-size: 1.05rem;
  margin: 14px 0 8px;
  color: var(--accent-dark);
}

h3 {
  font-size: 0.92rem;
  margin: 12px 0 4px;
  color: var(--accent);
}

.parts-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.8rem;
  margin-bottom: 6px;
}

.parts-table th,
.parts-table td {
  border: 1px solid var(--border);
  padding: 4px 6px;
  text-align: left;
  vertical-align: top;
}

.parts-table thead th {
  background: #f3efe7;
  position: sticky;
  top: 0;
  font-weight: 600;
}

.parts-table tbody tr:nth-child(even) {
  background: #fbfaf7;
}

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

.parts-container {
  overflow-x: auto;
}