/* ═══════════════════════════════════════════
   GEOKAMEN KALKULÁTOR – Stylesheet v1.3.0
═══════════════════════════════════════════ */

:root {
  --gk-bg:         #F7F3EE;
  --gk-surface:    #FFFFFF;
  --gk-border:     #DDD5C8;
  --gk-stone:      #2C2A26;
  --gk-text:       #3A3530;
  --gk-muted:      #7A7060;
  --gk-accent:     #C07B2A;
  --gk-accent-dk:  #9A5E18;
  --gk-accent-lt:  #F0DDB8;
  --gk-a:          #C07B2A;
  --gk-b:          #4A7EA0;
  --gk-c:          #6E9E6A;
  --gk-shadow:     0 2px 16px rgba(0,0,0,.10);
  --gk-radius:     12px;
  --gk-radius-sm:  8px;
}

/* ── Wrapper ── */
.gk-calc-wrap {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: var(--gk-bg);
  border: 1px solid var(--gk-border);
  border-radius: var(--gk-radius);
  max-width: 780px;
  margin: 32px auto;
  overflow: hidden;
  box-shadow: var(--gk-shadow);
  color: var(--gk-text);
}

/* ── Záhlaví ── */
.gk-header {
  background: var(--gk-stone);
  color: #fff;
  padding: 22px 28px;
  display: flex;
  align-items: center;
  gap: 16px;
}
.gk-header-icon { font-size: 2.2em; line-height: 1; flex-shrink: 0; }
.gk-title  { margin: 0 0 4px; font-size: 1.4em; font-weight: 700; color: #fff; }
.gk-subtitle { margin: 0; font-size: 0.88em; color: rgba(255,255,255,.6); }

/* ── Poměrová lišta ── */
.gk-ratio-bar-wrap {
  background: #fff;
  padding: 16px 28px 13px;
  border-bottom: 1px solid var(--gk-border);
}
.gk-ratio-label {
  font-size: .76em; font-weight: 700; text-transform: uppercase;
  letter-spacing: .06em; color: var(--gk-muted); margin-bottom: 7px;
}
.gk-ratio-bars {
  display: flex; height: 13px; border-radius: 7px; overflow: hidden; gap: 2px;
}
.gk-ratio-bar { transition: width .5s cubic-bezier(.4,0,.2,1); border-radius: 4px; }
.bar-a { background: var(--gk-a); }
.bar-b { background: var(--gk-b); }
.bar-c { background: var(--gk-c); }
.gk-ratio-names { display: flex; gap: 14px; margin-top: 8px; flex-wrap: wrap; }
.gk-ratio-name  { font-size: .79em; display: flex; align-items: center; gap: 5px; }
.gk-ratio-dot   { width: 9px; height: 9px; border-radius: 50%; }
.dot-a { background: var(--gk-a); }
.dot-b { background: var(--gk-b); }
.dot-c { background: var(--gk-c); }
.gk-ratio-pct { font-weight: 700; color: var(--gk-stone); }

/* ── Záložky ── */
.gk-tabs {
  display: flex;
  background: #fff;
  border-bottom: 2px solid var(--gk-border);
  overflow-x: auto;
  scrollbar-width: none;
}
.gk-tabs::-webkit-scrollbar { display: none; }
.gk-tab {
  flex: 1; min-width: 105px;
  padding: 12px 8px 10px;
  background: none; border: none;
  border-bottom: 3px solid transparent;
  cursor: pointer; font-size: .80em; font-weight: 500; color: var(--gk-muted);
  display: flex; flex-direction: column; align-items: center; gap: 3px;
  transition: color .2s, border-color .2s; margin-bottom: -2px;
}
.gk-tab:hover { color: var(--gk-accent); }
.gk-tab.active { color: var(--gk-accent-dk); border-bottom-color: var(--gk-accent); font-weight: 700; }
.gk-tab-icon { font-size: 1.25em; }

/* ── Panely ── */
.gk-panel { display: none; padding: 24px 28px; background: var(--gk-bg); }
.gk-panel.active { display: block; }

/* ── Tip pro formu a pojivo ── */
.gk-tip-box {
  background: var(--gk-accent-lt);
  border: 1px solid #E8C87A;
  border-radius: var(--gk-radius-sm);
  padding: 14px 18px;
  margin-bottom: 18px;
}
.gk-mold-steps { display: flex; flex-direction: column; gap: 9px; }
.gk-mold-step { display: flex; align-items: flex-start; gap: 10px; font-size: .88em; color: var(--gk-stone); }
.gk-step-num {
  width: 24px; height: 24px; background: var(--gk-accent); color: #fff;
  border-radius: 50%; display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: .82em; flex-shrink: 0;
}

/* ── Vstupy ── */
.gk-input-group { margin-bottom: 18px; }
.gk-label { display: block; font-size: .87em; font-weight: 600; color: var(--gk-text); margin-bottom: 7px; }
.gk-input-row { display: flex; gap: 7px; align-items: stretch; }
.gk-input {
  flex: 1; padding: 11px 13px;
  border: 1.5px solid var(--gk-border); border-radius: var(--gk-radius-sm);
  font-size: 1.08em; background: #fff; color: var(--gk-stone);
  transition: border-color .2s; outline: none; min-width: 0;
}
.gk-input:focus { border-color: var(--gk-accent); box-shadow: 0 0 0 3px rgba(192,123,42,.14); }
.gk-select {
  padding: 11px 9px; border: 1.5px solid var(--gk-border);
  border-radius: var(--gk-radius-sm); background: #fff;
  color: var(--gk-text); font-size: .93em; cursor: pointer; outline: none;
}
.gk-select:focus { border-color: var(--gk-accent); }
.gk-unit-label {
  display: flex; align-items: center; padding: 0 13px;
  background: var(--gk-border); border-radius: var(--gk-radius-sm);
  font-weight: 600; font-size: .93em; color: var(--gk-muted); white-space: nowrap;
}
.gk-hint { margin: 7px 0 0; font-size: .80em; color: var(--gk-muted); }

/* ── Tlačítka ── */
.gk-btn {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 12px 26px; background: var(--gk-accent); color: #fff;
  border: none; border-radius: var(--gk-radius-sm);
  font-size: .96em; font-weight: 700; cursor: pointer;
  transition: background .2s, transform .1s;
}
.gk-btn:hover { background: var(--gk-accent-dk); }
.gk-btn:active { transform: scale(.98); }
.gk-btn-secondary {
  background: transparent; color: var(--gk-muted);
  border: 1.5px solid var(--gk-border);
  font-size: .86em; padding: 9px 18px;
}
.gk-btn-secondary:hover { background: var(--gk-border); color: var(--gk-stone); }

/* ── Výsledky ── */
.gk-results { padding: 24px 28px; background: #fff; border-top: 2px solid var(--gk-border); }
.gk-results-header {
  display: flex; align-items: baseline; justify-content: space-between;
  margin-bottom: 18px; flex-wrap: wrap; gap: 7px;
}
.gk-results-title { margin: 0; font-size: 1.1em; font-weight: 700; color: var(--gk-stone); }
.gk-results-meta {
  font-size: .82em; color: var(--gk-muted);
  background: var(--gk-bg); padding: 4px 11px;
  border-radius: 20px; border: 1px solid var(--gk-border);
}

/* ── Karty složek ── */
.gk-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px,1fr));
  gap: 12px; margin-bottom: 16px;
}
.gk-card { border-radius: var(--gk-radius-sm); padding: 16px; position: relative; overflow: hidden; }
.gk-card::before { content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 4px; }
.gk-card-a { background: #FFF8EF; }  .gk-card-a::before { background: var(--gk-a); }
.gk-card-b { background: #EFF5FA; }  .gk-card-b::before { background: var(--gk-b); }
.gk-card-c { background: #F1F7F0; }  .gk-card-c::before { background: var(--gk-c); }
.gk-card-highlighted { box-shadow: 0 0 0 2px var(--gk-accent); }

.gk-card-name { font-size: .75em; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; color: var(--gk-muted); margin-bottom: 8px; }
.gk-card-primary { font-size: 1.9em; font-weight: 800; line-height: 1; color: var(--gk-stone); margin-bottom: 3px; }
.gk-card-primary span { font-size: .5em; font-weight: 600; color: var(--gk-muted); }
.gk-card-secondary { font-size: .86em; color: var(--gk-muted); }
.gk-card-volume {
  margin-top: 7px; padding-top: 7px; border-top: 1px dashed var(--gk-border);
  font-size: .83em; color: var(--gk-muted); display: flex; align-items: center; gap: 4px;
}
.gk-card-volume-val { font-weight: 700; color: var(--gk-text); font-size: 1.05em; }

/* ── Souhrn ── */
.gk-totals {
  background: var(--gk-bg); border: 1px solid var(--gk-border);
  border-radius: var(--gk-radius-sm); padding: 12px 16px;
  margin-bottom: 16px;
  display: grid; grid-template-columns: repeat(3,1fr); gap: 10px;
}
.gk-total-item { text-align: center; }
.gk-total-val   { font-size: 1.2em; font-weight: 800; color: var(--gk-accent-dk); display: block; }
.gk-total-label { font-size: .76em; color: var(--gk-muted); text-transform: uppercase; letter-spacing: .05em; }

/* ── Chyba ── */
.gk-error {
  margin: 12px 28px; padding: 10px 14px;
  background: #FFF0F0; border: 1px solid #F5AAAA;
  border-radius: var(--gk-radius-sm); color: #B00020; font-size: .89em;
}

/* ── Responsive ── */
@media (max-width: 540px) {
  .gk-header  { padding: 16px 18px; }
  .gk-panel   { padding: 18px 16px; }
  .gk-results { padding: 18px 16px; }
  .gk-card-primary { font-size: 1.6em; }
  .gk-tab { font-size: .76em; padding: 10px 6px 9px; min-width: 80px; }
  .gk-totals { grid-template-columns: 1fr 1fr; }
}

/* ══════════════════════════════════════════
   TISK – kompaktní jednostránková receptura
══════════════════════════════════════════ */
@media print {
  /* Skrýt vše co není výsledek */
  .gk-header,
  .gk-ratio-bar-wrap,
  .gk-tabs,
  .gk-panel,
  .gk-error,
  .gk-btn-secondary { display: none !important; }

  /* Wrapper bez rámečku, bez stínu */
  .gk-calc-wrap {
    box-shadow: none !important;
    border: none !important;
    margin: 0 !important;
    max-width: 100% !important;
  }

  /* Výsledky vždy viditelné a bez horního borderu */
  .gk-results {
    display: block !important;
    border-top: none !important;
    padding: 0 !important;
  }

  /* Tiskový hlavičkový blok */
  .gk-results::before {
    content: 'GEOKAMEN – Receptura směsi';
    display: block;
    font-size: 15pt;
    font-weight: 700;
    color: #000;
    border-bottom: 2pt solid #000;
    padding-bottom: 6pt;
    margin-bottom: 10pt;
  }

  .gk-results-header { margin-bottom: 8pt; }
  .gk-results-title  { font-size: 11pt; color: #000; }
  .gk-results-meta   { font-size: 9pt; background: none; border: 1pt solid #aaa; }

  /* Karty jako tabulková řada */
  .gk-cards {
    display: grid !important;
    grid-template-columns: repeat(3, 1fr) !important;
    gap: 8pt !important;
    margin-bottom: 10pt !important;
  }

  .gk-card {
    border: 1pt solid #ccc !important;
    border-radius: 4pt !important;
    padding: 10pt !important;
    break-inside: avoid;
    page-break-inside: avoid;
  }
  .gk-card::before { display: none !important; }

  .gk-card-a { background: #FFF8EF !important; -webkit-print-color-adjust: exact; print-color-adjust: exact; }
  .gk-card-b { background: #EFF5FA !important; -webkit-print-color-adjust: exact; print-color-adjust: exact; }
  .gk-card-c { background: #F1F7F0 !important; -webkit-print-color-adjust: exact; print-color-adjust: exact; }

  .gk-card-name    { font-size: 7pt; margin-bottom: 5pt; }
  .gk-card-primary { font-size: 18pt; margin-bottom: 2pt; }
  .gk-card-secondary { font-size: 9pt; }
  .gk-card-volume  { font-size: 9pt; padding-top: 5pt; margin-top: 5pt; }

  /* Souhrn */
  .gk-totals {
    display: grid !important;
    grid-template-columns: repeat(3,1fr) !important;
    border: 1pt solid #aaa !important;
    padding: 8pt !important;
    margin-bottom: 10pt !important;
    background: #f5f5f5 !important;
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }
  .gk-total-val   { font-size: 13pt; }
  .gk-total-label { font-size: 7pt; }

  /* Tiskové razítko */
  .gk-results::after {
    content: 'geokamen.cz  ·  Vytištěno: ' attr(data-print-date);
    display: block;
    font-size: 8pt;
    color: #888;
    margin-top: 10pt;
    border-top: 0.5pt solid #ccc;
    padding-top: 5pt;
  }

  /* Vše na jednu stranu */
  @page {
    size: A4 portrait;
    margin: 15mm 15mm 15mm 15mm;
  }
}