/* =============================================
   CENOVÁ KALKULAČKA – Page Styles
   Závisí na style.css + sluzby.css
   ============================================= */

body {
  background: #0F172A;
}

/* ===== SECTION ===== */
.klk-section {
  padding: 80px 32px 100px;
  background: var(--dark, #0F172A);
}

.klk-container {
  max-width: 1100px;
  margin: 0 auto;
}

/* ===== INTRO ===== */
.klk-intro {
  max-width: 680px;
  margin-bottom: 56px;
}

.klk-intro h2 {
  font-size: clamp(24px, 3.5vw, 36px);
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin: 0 0 14px;
}

.klk-intro p {
  font-size: 16px;
  line-height: 1.7;
  color: rgba(255,255,255,0.5);
  margin: 0;
}

/* ===== SERVICE TABS ===== */
.klk-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 36px;
  flex-wrap: wrap;
}

.klk-tab {
  padding: 10px 26px;
  border-radius: 50px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid rgba(255,255,255,0.12);
  background: rgba(255,255,255,0.04);
  color: rgba(255,255,255,0.5);
  transition: all 0.2s ease;
  line-height: 1;
}

.klk-tab:hover {
  border-color: rgba(255,255,255,0.22);
  color: rgba(255,255,255,0.8);
  background: rgba(255,255,255,0.07);
}

.klk-tab.is-active {
  background: linear-gradient(135deg, var(--primary, #2563eb) 0%, #0891b2 100%);
  border-color: transparent;
  color: #fff;
  box-shadow: 0 2px 16px rgba(37,99,235,0.35);
}

/* ===== TWO-COLUMN LAYOUT ===== */
.klk-wrap {
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: 24px;
  align-items: start;
}

/* ===== CARDS ===== */
.klk-card {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 20px;
  padding: 36px;
}

.klk-card-title {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.3);
  margin: 0 0 24px;
}

/* ===== DEPTH SLIDER ===== */
.klk-depth-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 10px;
}

.klk-depth-label {
  font-size: 15px;
  font-weight: 600;
  color: rgba(255,255,255,0.7);
}

.klk-depth-val {
  font-size: 28px;
  font-weight: 800;
  color: #fff;
  line-height: 1;
}

.klk-depth-val small {
  font-size: 14px;
  font-weight: 500;
  color: rgba(255,255,255,0.4);
  margin-left: 3px;
}

.klk-slider {
  width: 100%;
  -webkit-appearance: none;
  appearance: none;
  height: 6px;
  background: rgba(255,255,255,0.1);
  border-radius: 10px;
  outline: none;
  cursor: pointer;
  margin: 4px 0 8px;
}

.klk-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: linear-gradient(135deg, #2563eb, #0891b2);
  cursor: pointer;
  box-shadow: 0 0 0 4px rgba(37,99,235,0.2), 0 2px 8px rgba(0,0,0,0.4);
}

.klk-slider::-moz-range-thumb {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: linear-gradient(135deg, #2563eb, #0891b2);
  cursor: pointer;
  border: none;
  box-shadow: 0 0 0 4px rgba(37,99,235,0.2), 0 2px 8px rgba(0,0,0,0.4);
}

.klk-range-limits {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  color: rgba(255,255,255,0.25);
  margin-bottom: 32px;
}

.klk-hint {
  font-size: 13px;
  color: rgba(255,255,255,0.3);
  margin-bottom: 32px;
  padding: 10px 14px;
  background: rgba(6,182,212,0.06);
  border-left: 2px solid rgba(6,182,212,0.4);
  border-radius: 0 8px 8px 0;
  line-height: 1.5;
}

/* ===== EXTRAS ===== */
.klk-extras-title {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.3);
  margin: 0 0 14px;
}

.klk-extras-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.klk-extra-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 13px 16px;
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,0.07);
  background: rgba(255,255,255,0.02);
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
  user-select: none;
}

.klk-extra-item:hover {
  border-color: rgba(255,255,255,0.14);
  background: rgba(255,255,255,0.04);
}

.klk-extra-item.is-checked {
  border-color: rgba(37,99,235,0.4);
  background: rgba(37,99,235,0.07);
}

.klk-extra-item input[type="checkbox"] {
  width: 17px;
  height: 17px;
  accent-color: #2563eb;
  cursor: pointer;
  flex-shrink: 0;
}

.klk-extra-body {
  flex: 1;
  min-width: 0;
}

.klk-extra-name {
  font-size: 14px;
  font-weight: 600;
  color: rgba(255,255,255,0.75);
}

.klk-extra-desc {
  font-size: 12px;
  color: rgba(255,255,255,0.3);
  margin-top: 2px;
}

.klk-extra-price {
  font-size: 14px;
  font-weight: 700;
  color: #67e8f9;
  flex-shrink: 0;
}

/* ===== SUMMARY CARD ===== */
.klk-summary {
  background: rgba(37,99,235,0.07);
  border: 1px solid rgba(37,99,235,0.22);
  border-radius: 20px;
  padding: 32px;
  position: sticky;
  top: 100px;
}

.klk-summary-title {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.3);
  margin: 0 0 20px;
}

/* ===== BREAKDOWN ===== */
.klk-breakdown {
  margin-bottom: 20px;
}

.klk-breakdown-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 8px;
  padding: 9px 0;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  font-size: 13.5px;
}

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

.klk-breakdown-label {
  color: rgba(255,255,255,0.4);
  flex: 1;
}

.klk-breakdown-val {
  color: rgba(255,255,255,0.7);
  font-weight: 600;
  text-align: right;
  white-space: nowrap;
}

.klk-breakdown-extra {
  font-size: 13px;
  color: rgba(103,232,249,0.75);
}

/* ===== TOTAL ===== */
.klk-total-box {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 14px;
  padding: 20px;
  text-align: center;
  margin-bottom: 20px;
}

.klk-total-label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: rgba(255,255,255,0.3);
  margin-bottom: 8px;
}

.klk-total-price {
  font-size: 42px;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.03em;
  line-height: 1;
}

.klk-total-price sup {
  font-size: 22px;
  font-weight: 600;
  vertical-align: super;
  color: rgba(255,255,255,0.55);
  margin-right: 2px;
}

.klk-total-approx {
  font-size: 12px;
  color: rgba(255,255,255,0.25);
  margin-top: 6px;
}

.klk-summary .btn {
  display: flex;
  width: 100%;
  justify-content: center;
  box-sizing: border-box;
}

/* ===== DISCLAIMER ===== */
.klk-disclaimer {
  margin-top: 48px;
  padding: 18px 22px;
  background: rgba(255,255,255,0.02);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 12px;
  font-size: 13px;
  color: rgba(255,255,255,0.25);
  line-height: 1.65;
}

.klk-disclaimer strong {
  color: rgba(255,255,255,0.4);
}

/* ===== INCLUDED SECTION ===== */
.klk-included {
  padding: 80px 32px;
  background: #1E293B;
  border-top: 1px solid rgba(255,255,255,0.06);
}

.klk-included-inner {
  max-width: 1100px;
  margin: 0 auto;
}

.klk-included-eyebrow {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #67e8f9;
  margin-bottom: 12px;
}

.klk-included h2 {
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 800;
  color: #fff;
  margin: 0 0 48px;
  letter-spacing: -0.02em;
}

.klk-included-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.klk-included-item {
  display: flex;
  gap: 16px;
}

.klk-included-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(37,99,235,0.2), rgba(8,145,178,0.2));
  border: 1px solid rgba(37,99,235,0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #67e8f9;
  flex-shrink: 0;
}

.klk-included-text h4 {
  font-size: 14px;
  font-weight: 700;
  color: rgba(255,255,255,0.85);
  margin: 0 0 4px;
}

.klk-included-text p {
  font-size: 13px;
  color: rgba(255,255,255,0.38);
  margin: 0;
  line-height: 1.55;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 960px) {
  .klk-wrap {
    grid-template-columns: 1fr;
  }
  .klk-summary {
    position: static;
    order: -1;
  }
  .klk-included-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .klk-section  { padding: 60px 20px 80px; }
  .klk-card     { padding: 24px; }
  .klk-summary  { padding: 24px; }
  .klk-included { padding: 60px 20px; }
  .klk-included-grid { grid-template-columns: 1fr; }
}