/* --- Kalkulačka App CSS - 2026 SaaS Premium Redesign --- */

.app-header {
  padding: 4rem 1.5rem 3rem;
  text-align: center;
}

.app-header h1 {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.75rem;
}

.app-header p {
  font-size: 1.1rem;
  max-width: 500px;
  margin: 0 auto;
}

.calc-container {
  max-width: 720px; /* Širší pro vzdušnější karty */
  background-color: transparent;
  padding: 0 1rem 4rem;
}

/* Elegant Progress bar */
.progress-wrapper {
  width: 100%;
  height: 4px; /* Ultra tenký pro moderní vzhled */
  background-color: #e2e8f0;
  border-radius: var(--radius-full);
  margin-bottom: 3.5rem; /* Více místa dole pod barem */
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  background-color: var(--primary);
  width: 0%;
  transition: width 0.6s cubic-bezier(0.22, 1, 0.36, 1);
  border-radius: var(--radius-full);
}

/* Steps and Animations */
.step {
  display: none;
  opacity: 0;
  transform: translateY(20px); /* Větší počáteční posun pro znatelnější fade-in */
}

.step.active {
  display: block;
}

.step.fade-in {
  animation: fadeInSoft 0.5s cubic-bezier(0.25, 1, 0.5, 1) forwards;
}

@keyframes fadeInSoft {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.d-none { display: none !important; }

.step h2 {
  font-size: 1.75rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text-main);
  text-align: center;
  position: relative;
  padding-bottom: 1rem;
}

.step h2::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 40px;
  height: 3px;
  background-color: var(--primary);
  border-radius: var(--radius-full);
}

.step > p.mb-4 {
  text-align: center;
  font-size: 1.05rem;
  margin-bottom: 2.5rem !important; /* Vzdušnost pod nadpisem */
}

.step-actions {
  display: flex;
  margin-top: 3rem;
  gap: 1rem;
}

.step-actions.split {
  justify-content: space-between;
}

.step-actions.right {
  justify-content: flex-end;
}

/* Radio & Checkbox Cards - GLASSMORPHISM / SOFT UI */
.selection-grid, .checkbox-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1.5rem; /* Větší mezery mezi kartami */
}

.card-radio, .card-checkbox {
  position: relative;
  cursor: pointer;
  display: block;
}

.card-radio input, .card-checkbox input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.card-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1.25rem;
  padding: 2.5rem 1.5rem; /* Obrovské pady pro nadýchaný vzhled */
  border: 2px solid transparent; /* Připravený border pro transition */
  border-radius: var(--radius-xl); /* Oblé rohy po vzoru aktuálních trendů (24px) */
  background-color: var(--bg-card);
  box-shadow: var(--shadow-md); /* Měkký defaultní stín */
  transition: var(--transition);
  text-align: center;
  font-weight: 500;
  height: 100%;
  color: var(--text-muted);
}

/* SVG Ikony */
.card-content svg {
  width: 48px;
  height: 48px;
  color: #94a3b8; /* Muted šedá */
  transition: var(--transition);
}

/* Hover efekty na karty */
.card-radio:hover .card-content, .card-checkbox:hover .card-content {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: #e2e8f0;
}

.card-radio:hover .card-content svg, .card-checkbox:hover .card-content svg {
  color: var(--primary);
  transform: scale(1.05); /* Jemné zvětšení ikony při hoveru */
}

/* Active (Checked) stavy na karty (Crucial!) */
.card-radio input:checked + .card-content, .card-checkbox input:checked + .card-content {
  border: 2px solid var(--primary); /* Výrazný tvrdý zelený rámeček místo glowu */
  background-color: #ffffff;
  color: var(--text-main);
  box-shadow: var(--shadow-lg); /* Využití vylepšeného výrazného pop-up stínu */
  transform: translateY(-2px); /* Karta je fyzicky 'výš' */
}

.card-radio input:checked + .card-content svg, .card-checkbox input:checked + .card-content svg {
  color: var(--primary); /* Výrazná primární zeleň v ikoně */
  transform: scale(1.05);
}


/* Color dots - redesign */
.color-dot {
  width: 3.5rem;
  height: 3.5rem;
  border-radius: 50%;
  display: inline-block;
  box-shadow: inset 0 2px 4px rgba(0,0,0,0.06), 0 4px 10px rgba(0,0,0,0.05);
}
.color-dot.white { background-color: #ffffff; border: 1px solid #e2e8f0; }
.color-dot.mixed { background: linear-gradient(135deg, #ffffff 50%, #bae6fd 50%); border: 1px solid #e2e8f0; }
.color-dot.color { background: linear-gradient(135deg, #fcd34d 0%, #f472b6 50%, #38bdf8 100%); border: 1px solid transparent;}

/* Buttons Presets (Krok 2) - Soft pills */
.layout-presets {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.preset-btn {
  background: var(--bg-card);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  color: var(--text-muted);
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-full);
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
}

.preset-btn:hover {
  background: #f8fafc;
  color: var(--text-main);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.preset-btn.active {
  background: var(--text-main); /* Černé pilulky pro kontrast s bílým UI */
  color: #fff;
  border-color: var(--text-main);
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.2);
}

/* Sliders */
.slider-wrapper {
  margin-top: 3rem;
  margin-bottom: 2rem;
  background: #ffffff;
  padding: 2.5rem;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
}

.slider-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
  font-weight: 500;
  font-size: 1.1rem;
}

.slider-value {
  color: var(--primary);
  font-weight: 700;
  font-size: 1.5rem;
}

.range-slider {
  -webkit-appearance: none;
  width: 100%;
  height: 6px;
  background: #e2e8f0;
  border-radius: var(--radius-full);
  outline: none;
  margin: 10px 0;
}

.range-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--primary);
  cursor: pointer;
  box-shadow: 0 4px 12px var(--primary-glow);
  transition: var(--transition);
  border: 3px solid #ffffff; /* Bílý okraj vevnitř thumby */
}

.range-slider::-webkit-slider-thumb:hover {
  transform: scale(1.15);
}

/* Info Note */
.info-note {
  background: rgba(16, 185, 129, 0.05); /* Velmi jemná zelená */
  padding: 1.25rem 1.5rem;
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  color: var(--primary-hover);
  border-left: 4px solid var(--primary);
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* Result Card */
.result-card {
  text-align: center;
  background: #ffffff;
  padding: 3rem 2rem;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
}

/* Dekorační prvek do Result Card */
.result-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 6px;
  background: linear-gradient(90deg, var(--primary), #38bdf8);
}

.price-estimate {
  font-size: 3.5rem;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1;
  margin: 1rem 0;
  letter-spacing: -0.03em;
}

/* Price Breakdown */
.price-breakdown {
  margin-top: 2rem;
  background: var(--bg-body);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  text-align: left;
  border: 1px solid var(--border);
}

.breakdown-row {
  display: flex;
  justify-content: space-between;
  margin-bottom: 0.75rem;
  font-size: 0.95rem;
  color: var(--text-muted);
}

.breakdown-row:last-child {
  margin-bottom: 0;
}

.breakdown-row span:last-child {
  font-weight: 600;
  color: var(--text-main);
  font-family: var(--font-display);
}

/* Contact form */
.contact-form {
  background: #ffffff;
  padding: 3rem;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
}

.form-cols {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

/* Zmenšené labels */
form label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.btn-submit {
  width: 100%;
  padding: 1.25rem;
  font-size: 1.15rem;
}

.btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  transform: none !important;
  box-shadow: none !important;
}

@media (max-width: 600px) {
  .app-header { padding: 3rem 1rem 2rem; }
  .calc-container { padding: 0 1rem 2rem; }
  
  .slider-wrapper, .result-card, .contact-form {
    padding: 1.5rem;
  }
  
  .price-estimate { font-size: 2.5rem; }
  
  .form-cols { grid-template-columns: 1fr; }
  
  .step-actions { flex-direction: column-reverse; }
  .step-actions .btn { width: 100%; }
}