/* ===========================================
   calculator.css — Multi-step wizard
   Clean, light, elegant with branding variables
   =========================================== */

.calc {
    padding: 56px 0 80px;
    background: var(--brand-bg-secondary, #f9fafb);
    font-family: var(--brand-font-body, 'Inter', sans-serif);
}

.calc *, .calc *::before, .calc *::after { box-sizing: border-box; }

.calc__inner {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.calc__header {
    text-align: center;
    margin-bottom: 32px;
}

.calc__title {
    font-family: var(--brand-font-heading);
    font-weight: 700;
    font-size: 32px;
    color: var(--brand-text, #111827);
    margin: 0 0 8px;
}

.calc__subtitle {
    font-size: 15px;
    color: var(--brand-text-secondary, #6B7280);
    margin: 0;
}

/* ===========================================
   PROGRESS BAR
   =========================================== */
.calc__progress {
    position: relative;
    margin-bottom: 36px;
    padding: 0 4px;
}

.calc__progress-bar {
    position: absolute;
    top: 14px;
    left: 4px;
    right: 4px;
    height: 3px;
    background: rgba(0, 0, 0, 0.06);
    border-radius: 3px;
    overflow: hidden;
}

.calc__progress-bar::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    width: var(--progress, 0%);
    background: var(--brand-primary, #2563EB);
    border-radius: 3px;
    transition: width 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.calc__progress-steps {
    display: flex;
    justify-content: space-between;
    position: relative;
    z-index: 1;
}

.calc__progress-dot {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
}

.calc__progress-circle {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: var(--brand-bg, #fff);
    border: 2px solid rgba(0, 0, 0, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: 600;
    color: var(--brand-text-secondary, #6B7280);
    transition: all 0.3s;
}

.calc__progress-dot.is-active .calc__progress-circle,
.calc__progress-dot.is-done .calc__progress-circle {
    background: var(--brand-primary, #2563EB);
    border-color: var(--brand-primary, #2563EB);
    color: #fff;
}

.calc__progress-dot.is-done .calc__progress-circle::after {
    content: '✓';
}

.calc__progress-label {
    font-size: 10px;
    color: var(--brand-text-secondary, #9CA3AF);
    white-space: nowrap;
    display: none;
}

@media (min-width: 768px) {
    .calc__progress-label { display: block; }
}


/* ===========================================
   BODY — steps + sidebar layout
   =========================================== */
.calc__body {
    display: flex;
    gap: 28px;
    align-items: flex-start;
}

.calc__steps {
    flex: 1;
    min-width: 0;
}


/* ===========================================
   STEP
   =========================================== */
.calc__step {
    animation: calcFadeIn 0.3s ease;
}

@keyframes calcFadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to   { opacity: 1; transform: translateY(0); }
}

.calc__step-title {
    font-family: var(--brand-font-heading);
    font-weight: 600;
    font-size: 20px;
    color: var(--brand-text, #111827);
    margin: 0 0 6px;
}

.calc__step-hint {
    font-size: 13.5px;
    color: var(--brand-text-secondary, #9CA3AF);
    margin: 0 0 20px;
}

.calc__optional {
    font-weight: 400;
    font-size: 14px;
    color: var(--brand-text-secondary, #9CA3AF);
}

.calc__required { color: var(--brand-error, #EF4444); }


/* ===========================================
   CARDS (selectable)
   =========================================== */
.calc__cards {
    display: grid;
    gap: 12px;
    margin-top: 18px;
}

.calc__cards--2 { grid-template-columns: repeat(2, 1fr); }
.calc__cards--3 { grid-template-columns: repeat(2, 1fr); }

@media (min-width: 640px) {
    .calc__cards--3 { grid-template-columns: repeat(3, 1fr); }
}

.calc__card {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 20px 14px;
    background: var(--brand-bg, #fff);
    border: 2px solid rgba(0, 0, 0, 0.06);
    border-radius: 14px;
    cursor: pointer;
    font-family: inherit;
    font-size: 14px;
    color: var(--brand-text, #111827);
    text-align: center;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.calc__card:hover {
    border-color: rgba(var(--brand-primary-rgb, 37,99,235), 0.3);
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
}

.calc__card.is-selected {
    border-color: var(--brand-primary, #2563EB);
    background: rgba(var(--brand-primary-rgb, 37,99,235), 0.04);
    box-shadow: 0 0 0 3px rgba(var(--brand-primary-rgb, 37,99,235), 0.1);
}

.calc__card.is-selected::after {
    content: '';
    position: absolute;
    top: 8px;
    right: 8px;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--brand-primary, #2563EB);
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3' stroke-linecap='round' xmlns='http://www.w3.org/2000/svg'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E");
    background-size: 12px;
    background-repeat: no-repeat;
    background-position: center;
}

.calc__card-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    color: var(--brand-primary, #2563EB);
    opacity: 0.7;
}

.calc__card-icon svg { width: 100%; height: 100%; }

.calc__card.is-selected .calc__card-icon { opacity: 1; }

.calc__card-label {
    font-weight: 600;
    font-size: 14px;
    line-height: 1.3;
}

.calc__card-hint {
    font-size: 12px;
    color: var(--brand-text-secondary, #9CA3AF);
}

.calc__card-badge {
    position: absolute;
    top: -8px;
    right: 12px;
    padding: 2px 10px;
    font-size: 11px;
    font-weight: 600;
    color: var(--brand-success, #10B981);
    background: rgba(16, 185, 129, 0.1);
    border-radius: 20px;
}


/* ===========================================
   AREA SLIDER
   =========================================== */
.calc__area {
    margin-top: 18px;
    max-width: 500px;
}

.calc__area-display {
    text-align: center;
    margin-bottom: 20px;
}

.calc__area-value {
    font-family: var(--brand-font-heading);
    font-weight: 700;
    font-size: 48px;
    color: var(--brand-primary, #2563EB);
    line-height: 1;
}

.calc__area-unit {
    font-size: 20px;
    font-weight: 500;
    color: var(--brand-text-secondary, #6B7280);
    margin-left: 4px;
}

/* Custom range slider */
.calc__slider {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 6px;
    background: rgba(0, 0, 0, 0.06);
    border-radius: 6px;
    outline: none;
    cursor: pointer;
}

.calc__slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--brand-primary, #2563EB);
    border: 3px solid #fff;
    box-shadow: 0 2px 8px rgba(37, 99, 235, 0.3);
    cursor: pointer;
    transition: box-shadow 0.2s;
}

.calc__slider::-webkit-slider-thumb:hover {
    box-shadow: 0 2px 12px rgba(37, 99, 235, 0.5);
}

.calc__slider::-moz-range-thumb {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--brand-primary, #2563EB);
    border: 3px solid #fff;
    box-shadow: 0 2px 8px rgba(37, 99, 235, 0.3);
    cursor: pointer;
}

.calc__area-range {
    display: flex;
    justify-content: space-between;
    font-size: 12px;
    color: var(--brand-text-secondary, #9CA3AF);
    margin-top: 6px;
}

.calc__area-input-wrap {
    margin-top: 20px;
}

.calc__area-label {
    font-size: 13px;
    color: var(--brand-text-secondary, #6B7280);
    margin-bottom: 6px;
    display: block;
}

.calc__area-field {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 15px;
    color: var(--brand-text, #111827);
}

.calc__area-input {
    width: 100px;
    padding: 8px 12px;
    font-family: inherit;
    font-size: 16px;
    font-weight: 600;
    border: 2px solid rgba(0, 0, 0, 0.08);
    border-radius: 10px;
    outline: none;
    text-align: center;
    transition: border-color 0.2s;
}

.calc__area-input:focus {
    border-color: var(--brand-primary, #2563EB);
}


/* ===========================================
   SERVICES GRID (toggleable)
   =========================================== */
.calc__services-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
}

@media (min-width: 640px) {
    .calc__services-grid { grid-template-columns: repeat(3, 1fr); }
}

.calc__service {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    padding: 16px 10px 12px;
    background: var(--brand-bg, #fff);
    border: 2px solid rgba(0, 0, 0, 0.05);
    border-radius: 12px;
    cursor: pointer;
    text-align: center;
    transition: all 0.2s;
    font-family: inherit;
    font-size: 13px;
    color: var(--brand-text, #111827);
}

.calc__service:hover {
    border-color: rgba(var(--brand-primary-rgb, 37,99,235), 0.25);
}

.calc__service.is-selected {
    border-color: var(--brand-primary, #2563EB);
    background: rgba(var(--brand-primary-rgb, 37,99,235), 0.04);
}

.calc__service-icon {
    width: 32px;
    height: 32px;
    color: var(--brand-text-secondary, #9CA3AF);
    transition: color 0.2s;
}

.calc__service-icon svg { width: 100%; height: 100%; }

.calc__service.is-selected .calc__service-icon {
    color: var(--brand-primary, #2563EB);
}

.calc__service-name {
    font-weight: 500;
    font-size: 12.5px;
    line-height: 1.3;
}

.calc__service-price {
    font-size: 12px;
    font-weight: 600;
    color: var(--brand-primary, #2563EB);
}

.calc__service-qty {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 4px;
}

.calc__qty-btn {
    width: 26px;
    height: 26px;
    border-radius: 50%;
    border: 1px solid rgba(0, 0, 0, 0.12);
    background: var(--brand-bg, #fff);
    cursor: pointer;
    font-size: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--brand-text, #111827);
    transition: all 0.15s;
    font-family: inherit;
    padding: 0;
}

.calc__qty-btn:hover {
    background: var(--brand-primary, #2563EB);
    color: #fff;
    border-color: var(--brand-primary, #2563EB);
}

.calc__qty-value {
    font-size: 14px;
    font-weight: 600;
    min-width: 18px;
    text-align: center;
}


/* ===========================================
   DATE / TIME
   =========================================== */
.calc__datetime {
    display: flex;
    flex-direction: column;
    gap: 24px;
    margin-top: 18px;
}

@media (min-width: 640px) {
    .calc__datetime { flex-direction: row; gap: 32px; }
    .calc__date-field, .calc__time-field { flex: 1; }
}

.calc__field-label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    color: var(--brand-text-secondary, #6B7280);
    margin-bottom: 8px;
}

.calc__input {
    display: block;
    width: 100%;
    padding: 11px 14px;
    font-family: inherit;
    font-size: 14px;
    border: 2px solid rgba(0, 0, 0, 0.08);
    border-radius: 10px;
    outline: none;
    color: var(--brand-text, #111827);
    background: var(--brand-bg, #fff);
    transition: border-color 0.2s;
}

.calc__input:focus { border-color: var(--brand-primary, #2563EB); }

.calc__time-slots {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.calc__time-slot {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 10px 16px;
    background: var(--brand-bg, #fff);
    border: 2px solid rgba(0, 0, 0, 0.06);
    border-radius: 10px;
    cursor: pointer;
    font-family: inherit;
    font-size: 14px;
    font-weight: 500;
    color: var(--brand-text, #111827);
    transition: all 0.2s;
}

.calc__time-slot small {
    font-size: 11px;
    font-weight: 400;
    color: var(--brand-text-secondary, #9CA3AF);
}

.calc__time-slot.is-selected {
    border-color: var(--brand-primary, #2563EB);
    background: rgba(var(--brand-primary-rgb, 37,99,235), 0.04);
    color: var(--brand-primary, #2563EB);
}


/* ===========================================
   CONTACTS FORM
   =========================================== */
.calc__contacts-form {
    display: flex;
    flex-direction: column;
    gap: 14px;
    margin-top: 18px;
    max-width: 400px;
}

.calc__field { display: flex; flex-direction: column; }

.calc__consent {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    margin-top: 4px;
    cursor: pointer;
    font-size: 12.5px;
    color: var(--brand-text-secondary, #6B7280);
    line-height: 1.4;
}

.calc__consent input {
    margin-top: 2px;
    flex-shrink: 0;
    accent-color: var(--brand-primary, #2563EB);
}

.calc__consent a {
    color: var(--brand-primary, #2563EB);
    text-decoration: none;
}


/* ===========================================
   NAVIGATION (back/next)
   =========================================== */
.calc__nav {
    display: flex;
    gap: 10px;
    margin-top: 28px;
    padding-top: 20px;
    border-top: 1px solid rgba(0, 0, 0, 0.05);
}

.calc__nav-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 12px 24px;
    font-family: inherit;
    font-size: 15px;
    font-weight: 500;
    border: none;
    border-radius: var(--brand-btn-radius, 8px);
    cursor: pointer;
    transition: all 0.2s;
}

.calc__nav-btn:active { transform: scale(0.97); }

.calc__nav-btn--back {
    background: transparent;
    color: var(--brand-text-secondary, #6B7280);
    border: 1px solid rgba(0, 0, 0, 0.1);
}

.calc__nav-btn--back:hover:not(:disabled) {
    color: var(--brand-text, #111827);
    border-color: rgba(0, 0, 0, 0.2);
}

.calc__nav-btn--back:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.calc__nav-btn--next,
.calc__nav-btn--submit {
    background: var(--brand-btn-bg, #2563EB);
    color: var(--brand-btn-text, #fff);
}

.calc__nav-btn--next:hover,
.calc__nav-btn--submit:hover {
    background: var(--brand-btn-hover, #1D4ED8);
    box-shadow: 0 4px 16px rgba(37, 99, 235, 0.3);
}

.calc__nav-btn--submit {
    padding: 14px 32px;
    font-size: 16px;
}

.calc__nav-btn--submit:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}


/* ===========================================
   SIDEBAR (desktop)
   =========================================== */
.calc__sidebar {
    display: none;
    width: 300px;
    flex-shrink: 0;
    position: sticky;
    top: 80px;
}

.calc__sidebar-inner {
    background: var(--brand-bg, #fff);
    border: 1px solid rgba(0, 0, 0, 0.06);
    border-radius: 16px;
    padding: 24px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
}

.calc__sidebar-title {
    font-family: var(--brand-font-heading);
    font-weight: 600;
    font-size: 17px;
    color: var(--brand-text, #111827);
    margin: 0 0 16px;
}

.calc__sidebar-items {
    font-size: 13px;
    color: var(--brand-text-secondary, #6B7280);
    line-height: 1.7;
    margin-bottom: 20px;
    min-height: 60px;
}

.calc__sidebar-empty {
    color: var(--brand-text-secondary, #9CA3AF);
    font-style: italic;
    margin: 0;
}

.calc__sidebar-row {
    display: flex;
    justify-content: space-between;
    padding: 4px 0;
}

.calc__sidebar-row-label {
    color: var(--brand-text-secondary, #6B7280);
}

.calc__sidebar-row-value {
    font-weight: 500;
    color: var(--brand-text, #111827);
}

.calc__sidebar-divider {
    height: 1px;
    background: rgba(0, 0, 0, 0.06);
    margin: 8px 0;
}

.calc__sidebar-total {
    padding-top: 16px;
    border-top: 2px solid rgba(0, 0, 0, 0.06);
}

.calc__sidebar-total-label {
    display: block;
    font-size: 12px;
    color: var(--brand-text-secondary, #9CA3AF);
    margin-bottom: 4px;
}

.calc__sidebar-total-price {
    font-family: var(--brand-font-heading);
    font-weight: 700;
    font-size: 26px;
    color: var(--brand-primary, #2563EB);
}


/* ===========================================
   MOBILE BOTTOM BAR
   =========================================== */
.calc__mobile-bar {
    display: block;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 8000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    border-top: 1px solid rgba(0, 0, 0, 0.06);
    padding: 12px 16px;
    transform: translateY(100%);
    transition: transform 0.3s;
}

.calc__mobile-bar.is-visible {
    transform: translateY(0);
}

.calc__mobile-bar-inner {
    max-width: 1100px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.calc__mobile-price-label {
    font-size: 12px;
    color: var(--brand-text-secondary, #6B7280);
}

.calc__mobile-price-value {
    display: block;
    font-family: var(--brand-font-heading);
    font-weight: 700;
    font-size: 20px;
    color: var(--brand-primary, #2563EB);
}

.calc__mobile-details {
    padding: 8px 16px;
    font-family: inherit;
    font-size: 13px;
    font-weight: 500;
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: 8px;
    background: none;
    cursor: pointer;
    color: var(--brand-text-secondary, #6B7280);
}


/* ===========================================
   RESPONSIVE
   =========================================== */
@media (min-width: 768px) {
    .calc__inner { padding: 0 28px; }
    .calc__title { font-size: 36px; }
}

@media (min-width: 900px) {
    .calc__sidebar { display: block; }
    .calc__mobile-bar { display: none; }
    .calc__inner { padding: 0 40px; }
}