/* ═══════════════ RESET & BASE ═══════════════ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; -webkit-tap-highlight-color: transparent; }

:root {
  --green:       #2e7d32;
  --green-dark:  #1b5e20;
  --green-light: #4caf50;
  --green-pale:  #e8f5e9;
  --green-mid:   #388e3c;
  --navy:        #1a3c5e;
  --text:        #111827;
  --text-mid:    #374151;
  --text-light:  #6b7280;
  --border:      #e5e7eb;
  --bg:          #f5f7f4;
  --white:       #ffffff;
  --radius:      14px;
  --radius-sm:   8px;
  --shadow:      0 2px 12px rgba(0,0,0,.08);
  --shadow-md:   0 6px 24px rgba(0,0,0,.12);
  --font:        'Inter', system-ui, sans-serif;
  --header-h:    72px;
  --progress-h:  64px;
  --footer-h:    80px;
}

html, body {
  height: 100%;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  overflow: hidden; /* prevent body scroll on iPad */
}

/* ═══════════════ HEADER ═══════════════ */
.app-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-h);
  background: var(--white);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  z-index: 100;
  box-shadow: var(--shadow);
}

.app-logo {
  height: 52px;
  width: auto;
  border-radius: 8px;
}

.app-header-right {
  display: flex;
  align-items: center;
  gap: 20px;
}

.app-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--navy);
  letter-spacing: -.01em;
}

.btn-reset {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 9px 16px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--white);
  color: var(--text-light);
  font-size: .85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all .2s;
}
.btn-reset svg { width: 16px; height: 16px; }
.btn-reset:hover { border-color: var(--green); color: var(--green); background: var(--green-pale); }

/* ═══════════════ PROGRESS ═══════════════ */
.progress-bar-wrap {
  position: fixed;
  top: var(--header-h);
  left: 0; right: 0;
  height: var(--progress-h);
  background: var(--white);
  border-bottom: 1px solid var(--border);
  z-index: 99;
  padding: 0 24px;
  display: flex;
  align-items: center;
}

.progress-track {
  position: absolute;
  bottom: 0; left: 0;
  height: 3px;
  background: var(--green);
  transition: width .4s ease;
}

.progress-steps {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: 700px;
  margin: 0 auto;
}

.ps-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  cursor: default;
  opacity: .4;
  transition: opacity .3s;
}
.ps-step.active  { opacity: 1; }
.ps-step.done    { opacity: .75; }

.ps-num {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--border);
  color: var(--text-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .85rem;
  font-weight: 700;
  transition: background .3s, color .3s;
}
.ps-step.active .ps-num  { background: var(--green); color: #fff; }
.ps-step.done .ps-num    { background: var(--green-pale); color: var(--green); }

.ps-lbl {
  font-size: .7rem;
  font-weight: 600;
  color: var(--text-light);
  white-space: nowrap;
}
.ps-step.active .ps-lbl { color: var(--green); }

/* ═══════════════ MAIN SCROLL AREA ═══════════════ */
.app-main {
  position: fixed;
  top: calc(var(--header-h) + var(--progress-h));
  bottom: var(--footer-h);
  left: 0; right: 0;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}

/* ═══════════════ STEPS ═══════════════ */
.step {
  display: none;
  padding: 28px 32px 40px;
  max-width: 900px;
  margin: 0 auto;
  animation: fadeSlide .3s ease;
}
.step.active { display: block; }

@keyframes fadeSlide {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

.step-title {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--navy);
  margin-bottom: 6px;
  letter-spacing: -.02em;
}

.step-sub {
  font-size: .95rem;
  color: var(--text-light);
  margin-bottom: 28px;
}

.field-label {
  display: block;
  font-size: .85rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: .03em;
  text-transform: uppercase;
  margin-bottom: 14px;
  margin-top: 6px;
}

/* ═══════════════ FORM GRID ═══════════════ */
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.form-group { display: flex; flex-direction: column; gap: 8px; }
.form-group.full { grid-column: 1 / -1; }

.form-group label {
  font-size: .85rem;
  font-weight: 600;
  color: var(--text);
}

.form-group input {
  padding: 14px 16px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font: inherit;
  font-size: 1rem;
  color: var(--text);
  background: var(--white);
  outline: none;
  transition: border-color .2s, box-shadow .2s;
  -webkit-appearance: none;
  text-align: center;
}
.form-group input:focus {
  border-color: var(--green);
  box-shadow: 0 0 0 3px rgba(46,125,50,.12);
}
.form-group input[type="text"], .form-group input[type="email"] {
  text-align: left;
}

/* ═══════════════ STEPPERS ═══════════════ */
.stepper-row {
  display: flex;
  align-items: center;
  gap: 0;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--white);
}
.stepper-row input {
  flex: 1;
  border: none;
  border-radius: 0;
  border-left: 1.5px solid var(--border);
  border-right: 1.5px solid var(--border);
  padding: 14px 8px;
  font-size: 1.1rem;
  font-weight: 700;
  box-shadow: none !important;
}
.stepper-btn {
  width: 52px;
  height: 52px;
  background: var(--bg);
  border: none;
  font-size: 1.4rem;
  font-weight: 400;
  color: var(--green);
  cursor: pointer;
  transition: background .15s;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.stepper-btn:active { background: var(--green-pale); }

/* ═══════════════ TYPE CARDS (house type) ═══════════════ */
.card-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
  margin-top: 6px;
}
.card-grid--4 { grid-template-columns: repeat(4, 1fr); }
.card-grid--3 { grid-template-columns: repeat(3, 1fr); }

.type-card, .option-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 16px 10px 14px;
  background: var(--white);
  border: 2px solid var(--border);
  border-radius: var(--radius);
  cursor: pointer;
  transition: border-color .2s, background .2s, transform .15s, box-shadow .2s;
  font-family: var(--font);
}

.type-card svg, .option-card svg {
  width: 64px;
  height: 56px;
}

.type-card span, .option-card span {
  font-size: .8rem;
  font-weight: 600;
  color: var(--text-mid);
  text-align: center;
  line-height: 1.3;
}

.type-card:hover, .option-card:hover {
  border-color: var(--green-light);
  background: var(--green-pale);
}

.type-card.selected, .option-card.selected {
  border-color: var(--green);
  background: var(--green-pale);
  box-shadow: 0 0 0 3px rgba(46,125,50,.15);
}

.type-card.selected span, .option-card.selected span {
  color: var(--green-dark);
  font-weight: 700;
}

.type-card:active, .option-card:active {
  transform: scale(.97);
}

/* ═══════════════ ISOLATIE ROWS ═══════════════ */
.isolatie-rows {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 8px;
}

.isolatie-row {
  display: flex;
  align-items: center;
  gap: 20px;
  background: var(--white);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
}

.isolatie-icon { width: 48px; flex-shrink: 0; }
.isolatie-icon svg { width: 48px; height: auto; }

.isolatie-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.isolatie-naam {
  font-size: .95rem;
  font-weight: 700;
  color: var(--text);
}

.isolatie-hint {
  font-size: .78rem;
  color: var(--text-light);
}

.isolatie-options {
  display: flex;
  gap: 8px;
}

.iso-btn {
  padding: 10px 16px;
  border: 1.5px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
  font-family: var(--font);
  font-size: .82rem;
  font-weight: 600;
  color: var(--text-mid);
  cursor: pointer;
  transition: all .18s;
  white-space: nowrap;
}
.iso-btn:hover   { border-color: var(--green-light); color: var(--green); }
.iso-btn.selected {
  background: var(--green);
  border-color: var(--green);
  color: #fff;
}

/* ═══════════════ TOGGLE ═══════════════ */
.toggle-row {
  display: flex;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}
.toggle-btn {
  flex: 1;
  padding: 14px;
  background: var(--bg);
  border: none;
  font: inherit;
  font-size: .92rem;
  font-weight: 600;
  color: var(--text-mid);
  cursor: pointer;
  transition: background .18s, color .18s;
}
.toggle-btn + .toggle-btn { border-left: 1.5px solid var(--border); }
.toggle-btn.active {
  background: var(--green);
  color: #fff;
}

/* ═══════════════ FOOTER NAV ═══════════════ */
.app-footer {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  height: var(--footer-h);
  background: var(--white);
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  z-index: 100;
  box-shadow: 0 -2px 12px rgba(0,0,0,.06);
}

.step-counter {
  font-size: .88rem;
  font-weight: 600;
  color: var(--text-light);
}

.nav-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border: none;
  border-radius: 10px;
  font: inherit;
  font-size: .95rem;
  font-weight: 700;
  cursor: pointer;
  transition: all .2s;
  min-width: 140px;
  justify-content: center;
}
.nav-btn svg { width: 18px; height: 18px; }

.nav-btn--primary  { background: var(--green); color: #fff; }
.nav-btn--primary:hover  { background: var(--green-dark); transform: translateY(-1px); box-shadow: 0 4px 16px rgba(46,125,50,.3); }
.nav-btn--primary:active { transform: scale(.98); }

.nav-btn--secondary { background: var(--bg); color: var(--text-mid); border: 1.5px solid var(--border); }
.nav-btn--secondary:hover { background: var(--green-pale); color: var(--green); border-color: var(--green); }

/* ═══════════════ RAPPORT ═══════════════ */
.rapport-header {
  background: linear-gradient(135deg, var(--green-dark), var(--green-mid));
  border-radius: var(--radius);
  padding: 28px 32px;
  color: #fff;
  margin-bottom: 24px;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 24px;
}

.rapport-pand h3 { font-size: 1.2rem; font-weight: 800; margin-bottom: 4px; }
.rapport-pand p  { font-size: .9rem; opacity: .85; }

.rapport-label-wrap { text-align: center; flex-shrink: 0; }
.rapport-label-wrap p { font-size: .75rem; opacity: .8; margin-bottom: 8px; font-weight: 600; text-transform: uppercase; letter-spacing: .06em; }

.label-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 64px; height: 64px;
  border-radius: 50%;
  font-size: 1.4rem;
  font-weight: 900;
  border: 3px solid rgba(255,255,255,.5);
  background: rgba(255,255,255,.2);
  color: #fff;
  letter-spacing: -.03em;
}
.label-badge.label-A   { background: #43a047; }
.label-badge.label-B   { background: #7cb342; }
.label-badge.label-C   { background: #c0ca33; color: #333; }
.label-badge.label-D   { background: #fdd835; color: #333; }
.label-badge.label-E   { background: #fb8c00; }
.label-badge.label-F   { background: #e53935; }
.label-badge.label-G   { background: #b71c1c; }

.rapport-stats {
  display: flex;
  gap: 16px;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid rgba(255,255,255,.2);
}
.rapport-stat { flex: 1; text-align: center; }
.rapport-stat .stat-val { font-size: 1.3rem; font-weight: 800; display: block; }
.rapport-stat .stat-lbl { font-size: .72rem; opacity: .8; }

.rapport-body {}

.rapport-section-title {
  font-size: 1rem;
  font-weight: 800;
  color: var(--navy);
  text-transform: uppercase;
  letter-spacing: .06em;
  margin-bottom: 14px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--green-pale);
}

.aanbevelingen { display: flex; flex-direction: column; gap: 12px; margin-bottom: 28px; }

.aanbeveling-card {
  background: var(--white);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  display: flex;
  align-items: center;
  gap: 16px;
  transition: box-shadow .2s;
}
.aanbeveling-card:hover { box-shadow: var(--shadow-md); }
.aanbeveling-card.prio-hoog   { border-left: 5px solid #e53935; }
.aanbeveling-card.prio-middel { border-left: 5px solid #fb8c00; }
.aanbeveling-card.prio-laag   { border-left: 5px solid #fdd835; }

.aanbeveling-emoji { font-size: 2rem; flex-shrink: 0; }

.aanbeveling-info { flex: 1; }
.aanbeveling-info h4 { font-size: 1rem; font-weight: 700; color: var(--text); margin-bottom: 4px; }
.aanbeveling-info p  { font-size: .83rem; color: var(--text-light); line-height: 1.5; }

.aanbeveling-cijfers {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 6px;
  flex-shrink: 0;
  min-width: 140px;
}

.cijfer-besparing {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--green);
  white-space: nowrap;
}
.cijfer-besparing small { font-size: .72rem; font-weight: 500; color: var(--text-light); }

.cijfer-kosten {
  font-size: .8rem;
  color: var(--text-light);
  white-space: nowrap;
}

.cijfer-tvt {
  font-size: .8rem;
  font-weight: 600;
  color: var(--text-mid);
  white-space: nowrap;
}

.badge-prio {
  display: inline-block;
  padding: 3px 9px;
  border-radius: 100px;
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .04em;
  text-transform: uppercase;
}
.badge-prio.hoog   { background: #fdecea; color: #c62828; }
.badge-prio.middel { background: #fff3e0; color: #e65100; }
.badge-prio.laag   { background: #fffde7; color: #827717; }

.badge-isde {
  display: inline-block;
  padding: 3px 9px;
  border-radius: 100px;
  font-size: .7rem;
  font-weight: 700;
  background: var(--green-pale);
  color: var(--green-dark);
}

.rapport-totaal {
  background: var(--green-pale);
  border: 2px solid var(--green);
  border-radius: var(--radius);
  padding: 20px 24px;
  display: flex;
  justify-content: space-around;
  align-items: center;
  margin-bottom: 24px;
}

.totaal-item { text-align: center; }
.totaal-item .t-val { font-size: 1.5rem; font-weight: 900; color: var(--green-dark); display: block; }
.totaal-item .t-lbl { font-size: .78rem; color: var(--text-light); }

.print-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: 100%;
  padding: 16px;
  background: var(--navy);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  font: inherit;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition: background .2s;
  margin-bottom: 32px;
}
.print-btn:hover { background: #0f2744; }
.print-btn svg { width: 20px; height: 20px; }

/* Validation error */
.input-error { border-color: #ef4444 !important; }
.error-msg {
  background: #fef2f2;
  border: 1px solid #fca5a5;
  border-radius: 8px;
  padding: 12px 16px;
  font-size: .88rem;
  color: #dc2626;
  margin-bottom: 16px;
  display: none;
}
.error-msg.visible { display: block; }

/* ═══════════════ RESPONSIVE (portrait iPad) ═══════════════ */
@media (max-width: 820px) {
  :root { --header-h: 64px; --progress-h: 56px; --footer-h: 72px; }

  .app-title { display: none; }
  .step { padding: 20px 20px 32px; }
  .card-grid { grid-template-columns: repeat(3, 1fr); }
  .card-grid--4 { grid-template-columns: repeat(2, 1fr); }
  .card-grid--3 { grid-template-columns: repeat(3, 1fr); }
  .form-grid { grid-template-columns: 1fr; }
  .form-group.full { grid-column: 1; }
  .isolatie-row { flex-wrap: wrap; }
  .isolatie-options { flex-wrap: wrap; }
  .rapport-header { flex-direction: column; }
  .rapport-stats { flex-wrap: wrap; }
  .aanbeveling-card { flex-wrap: wrap; }
  .aanbeveling-cijfers { flex-direction: row; align-items: center; min-width: unset; width: 100%; justify-content: space-between; }
}

@media (max-width: 540px) {
  .card-grid { grid-template-columns: repeat(2, 1fr); }
  .card-grid--3 { grid-template-columns: repeat(2, 1fr); }
  .ps-lbl { display: none; }
  .nav-btn { min-width: 110px; padding: 13px 18px; font-size: .88rem; }
}

/* Print styles */
@media print {
  .app-header, .progress-bar-wrap, .app-footer { display: none !important; }
  .app-main { position: static; overflow: visible; }
  .step { display: block !important; page-break-inside: avoid; }
  .print-btn { display: none; }
}