:root {
  --navy: #1b2a33;
  --navy-light: #2c3e4d;
  --gold: #2dbe60;
  --gold-light: #47cf73;
  --gold-dim: rgba(45,190,96,0.10);
  --slate: #667380;
  --slate-light: #9aa5b1;
  --bg: #f7f8f9;
  --white: #ffffff;
  --card-bg: #ffffff;
  --border: #e4e7eb;
  --radius: 14px;
  --radius-sm: 8px;
  --shadow: 0 2px 20px rgba(27,42,51,0.06);
  --shadow-lg: 0 8px 40px rgba(27,42,51,0.10);
  --transition: 0.35s cubic-bezier(0.4,0,0.2,1);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--navy);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ── TEXTURE OVERLAY ── */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.03'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 0;
}

/* ── PROGRESS BAR ── */
.progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--gold), var(--gold-light));
  z-index: 1000;
  transition: width 0.5s ease;
  width: 0%;
}

/* ── STEP INDICATOR ── */
.steps {
  max-width: 500px;
  margin: 0 auto;
  padding: 32px 32px 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
}

.step {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  font-weight: 500;
  color: var(--slate-light);
  opacity: 0.5;
  transition: var(--transition);
}

.step.active {
  opacity: 1;
  color: var(--gold);
}

.step.done {
  opacity: 0.8;
  color: var(--slate-light);
}

.step-num {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 2px solid currentColor;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 600;
  transition: var(--transition);
}

.step.active .step-num {
  background: var(--gold);
  border-color: var(--gold);
  color: var(--navy);
}

.step.done .step-num {
  background: var(--slate-light);
  border-color: var(--slate-light);
  color: var(--navy);
}

.step-line {
  width: 48px;
  height: 2px;
  background: var(--border);
  margin: 0 8px;
  transition: var(--transition);
}

.step-line.done {
  background: var(--gold);
}

/* ── MAIN CONTAINER ── */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 36px 32px 80px;
  position: relative;
  z-index: 1;
}

/* ── SECTION PANELS ── */
.panel {
  display: none;
  animation: fadeUp 0.5s ease both;
}

.panel.visible {
  display: block;
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

.section-label {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--gold);
  margin-bottom: 8px;
}

.section-title {
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 600;
  color: var(--navy);
  margin-bottom: 6px;
  letter-spacing: -0.01em;
}

.section-desc {
  font-size: 15px;
  color: var(--slate);
  margin-bottom: 28px;
  font-weight: 300;
}

/* ── CATEGORY TABS ── */
.cat-tabs {
  display: flex;
  gap: 6px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 5px;
  margin-bottom: 24px;
  width: fit-content;
}

.cat-tab {
  padding: 10px 22px;
  border: none;
  background: transparent;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  color: var(--slate);
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 8px;
}

.cat-tab:hover {
  color: var(--navy);
  background: var(--card-bg);
}

.cat-tab.active {
  background: #1a1a1a;
  color: var(--white);
  box-shadow: 0 2px 12px rgba(0,0,0,0.2);
}

.cat-tab.active.cat-color {
  background: linear-gradient(135deg, #00b8d4, #7c4dff, #ff6d00, #d50000);
  box-shadow: 0 2px 12px rgba(0,184,212,0.25);
}

.cat-tab .icon {
  font-size: 16px;
}

/* ── DEVICE GRID ── */
.device-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.device-card {
  position: relative;
  background: var(--white);
  border: 2px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 20px;
  cursor: pointer;
  transition: var(--transition);
  overflow: hidden;
}

.device-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: left;
  transition: var(--transition);
}

.device-card:hover {
  border-color: var(--slate-light);
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}

.device-card:hover::before {
  transform: scaleX(1);
}

.device-card.selected {
  border-color: var(--gold);
  background: var(--gold-dim);
  box-shadow: 0 0 0 3px rgba(45,190,96,0.15);
}

.device-card.selected::before {
  transform: scaleX(1);
}

.device-card .check {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  border: 2px solid var(--border);
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
}

.device-card.selected .check {
  background: var(--gold);
  border-color: var(--gold);
}

.device-card.selected .check::after {
  content: '✓';
  color: var(--navy);
  font-size: 12px;
  font-weight: 700;
}

.device-img {
  display: block;
  width: 100%;
  max-width: 140px;
  height: auto;
  margin: 8px auto 14px;
  object-fit: contain;
  aspect-ratio: 1;
}

.device-brand {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--slate);
  margin-bottom: 6px;
}

.device-name {
  font-size: 17px;
  font-weight: 600;
  color: var(--navy);
  margin-bottom: 10px;
}

.device-meta {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.device-tag {
  font-size: 11px;
  font-weight: 500;
  padding: 3px 10px;
  border-radius: 20px;
  background: var(--card-bg);
  color: var(--slate);
  border: 1px solid var(--border);
}

.device-card.selected .device-tag {
  background: rgba(45,190,96,0.18);
  border-color: rgba(45,190,96,0.3);
  color: var(--navy);
}

/* ── FORM ── */
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group.full {
  grid-column: 1 / -1;
}

.form-label {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--slate);
}

.form-input {
  padding: 14px 16px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 15px;
  color: var(--navy);
  background: var(--white);
  transition: var(--transition);
  outline: none;
  width: 100%;
}

.form-input:focus {
  border-color: var(--gold);
  box-shadow: 0 0 0 3px rgba(45,190,96,0.12);
}

.form-input::placeholder {
  color: var(--slate-light);
}

.form-input[readonly] {
  background: var(--card-bg);
  color: var(--navy);
  font-weight: 500;
  cursor: default;
}

.selected-device-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  background: var(--gold-dim);
  border: 1px solid rgba(45,190,96,0.25);
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  color: var(--navy);
  margin-bottom: 20px;
}

.selected-device-badge .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--gold);
}

/* ── BUTTONS ── */
.btn-row {
  display: flex;
  gap: 12px;
  margin-top: 28px;
  justify-content: space-between;
}

.btn {
  padding: 14px 32px;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  letter-spacing: 0.02em;
}

.btn-primary {
  background: var(--navy);
  color: var(--white);
  box-shadow: 0 4px 16px rgba(27,42,51,0.2);
}

.btn-primary:hover {
  background: var(--navy-light);
  transform: translateY(-1px);
  box-shadow: 0 6px 24px rgba(27,42,51,0.25);
}

.btn-secondary {
  background: transparent;
  color: var(--slate);
  border: 1.5px solid var(--border);
}

.btn-secondary:hover {
  border-color: var(--slate-light);
  color: var(--navy);
}

.btn-gold {
  background: linear-gradient(135deg, var(--gold), var(--gold-light));
  color: var(--navy);
  box-shadow: 0 4px 16px rgba(45,190,96,0.3);
}

.btn-gold:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 24px rgba(45,190,96,0.35);
}

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

/* ── RESULT ── */
.result-panel {
  animation: fadeUp 0.6s ease both;
}

.offer-doc {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.offer-header {
  background: var(--navy);
  padding: 36px 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
}

.offer-header-logo {
  max-width: 160px;
  filter: brightness(0) invert(1);
  opacity: 0.9;
}

.offer-header-right {
  text-align: right;
}

.offer-header-right h2 {
  font-size: 24px;
  font-weight: 700;
  color: var(--white);
  letter-spacing: -0.01em;
}

.offer-header-right p {
  font-size: 13px;
  color: var(--gold-light);
  font-weight: 400;
  margin-top: 2px;
}

.offer-body {
  padding: 36px 48px;
}

.offer-info-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 32px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--border);
}

.offer-info-item label {
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--slate);
  display: block;
  margin-bottom: 4px;
}

.offer-info-item span {
  font-size: 15px;
  font-weight: 500;
  color: var(--navy);
}

.offer-table-wrap {
  margin-bottom: 28px;
}

.offer-table-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--navy);
  margin-bottom: 12px;
}

.offer-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.offer-table thead th {
  background: var(--card-bg);
  padding: 12px 16px;
  text-align: left;
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--slate);
  border-bottom: 2px solid var(--border);
}

.offer-table tbody td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
  color: var(--navy);
}

.offer-table tbody tr:last-child td {
  border-bottom: none;
}

.offer-table .num {
  text-align: right;
  font-weight: 500;
  font-variant-numeric: tabular-nums;
}

.offer-total-bar {
  background: var(--navy);
  margin: 0 -40px;
  padding: 28px 56px;
  display: flex;
  align-items: baseline;
  justify-content: flex-end;
  gap: 12px;
}

.offer-total-bar .label {
  font-size: 13px;
  font-weight: 500;
  color: var(--slate-light);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.offer-total-bar .amount {
  font-size: 32px;
  font-weight: 700;
  color: var(--gold);
}

.offer-total-bar .period {
  font-size: 14px;
  font-weight: 400;
  color: var(--slate-light);
  margin-left: 4px;
}

.offer-footer {
  padding: 28px 48px;
  text-align: center;
  font-size: 12px;
  color: var(--slate);
  line-height: 1.8;
  border-top: 1px solid var(--border);
}

.offer-actions {
  display: flex;
  gap: 12px;
  margin-top: 24px;
  justify-content: center;
}

/* ── TOAST ── */
.realbt-toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--navy);
  color: var(--white);
  padding: 14px 28px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  z-index: 9999;
  box-shadow: 0 8px 32px rgba(0,0,0,0.25);
  animation: realbtToastIn 0.35s ease both;
}

@keyframes realbtToastIn {
  from { opacity: 0; transform: translateX(-50%) translateY(12px); }
  to { opacity: 1; transform: translateX(-50%) translateY(0); }
}

.realbt-toast.error {
  background: #d32f2f;
}

/* ── RESPONSIVE ── */
@media (max-width: 768px) {
  .container { padding: 24px 16px 60px; }
  .device-grid { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .offer-header { padding: 20px 28px; flex-direction: row; text-align: left; align-items: center; }
  .offer-header-right { text-align: center; }
  .offer-body { padding: 28px 28px; }
  .offer-info-grid { grid-template-columns: 1fr; }
  .offer-total-bar { margin: 0 -28px; padding: 24px 32px; flex-direction: column; align-items: center; gap: 6px; }
  .offer-footer { padding: 24px 28px; }
  .steps { padding: 24px 16px 0; }
  .step span:not(.step-num) { display: none; }
  .step-line { width: 32px; }
  .btn-row { flex-direction: column; }
  .btn { width: 100%; justify-content: center; }
  .offer-actions { flex-direction: column; }
}

/* ── PRINT ── */
@media print {
  body { background: #fff; }
  body::before { display: none; }

  /* Hide everything on the page first */
  body * { visibility: hidden; }

  /* Show only the offer document and its children */
  .offer-doc,
  .offer-doc * { visibility: visible; }

  /* Bring offer-doc to the top of the printed page */
  .offer-doc {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    box-shadow: none;
    border: none;
    border-radius: 0;
  }

  /* Hide non-result panels (needed because .panel also gets .visible in JS) */
  .container > .panel:not(.result-panel) { display: none !important; }

  .container { padding: 0; max-width: 100%; }
  .offer-total-bar { -webkit-print-color-adjust: exact; print-color-adjust: exact; }
  .offer-header { -webkit-print-color-adjust: exact; print-color-adjust: exact; }

  .offer-header { padding: 12px 20px !important; }
  .offer-body { padding: 14px 20px !important; }
  .offer-info-grid {
    grid-template-columns: 1fr 1fr !important;
    gap: 8px 16px !important;
    margin-bottom: 14px !important;
    padding-bottom: 12px !important;
  }
  .offer-info-item label { font-size: 9px !important; margin-bottom: 2px !important; }
  .offer-info-item span { font-size: 13px !important; }
  .offer-table-wrap { margin-bottom: 12px !important; }
  .offer-table-title { font-size: 13px !important; margin-bottom: 6px !important; }
  .offer-table { font-size: 12px !important; }
  .offer-table thead th { padding: 6px 10px !important; font-size: 9px !important; }
  .offer-table tbody td { padding: 8px 10px !important; }
  .offer-total-bar { padding: 12px 20px !important; margin: 0 -20px !important; flex-direction: row !important; justify-content: flex-end !important; align-items: baseline !important; gap: 10px !important; text-align: right !important; }
  .offer-total-bar .amount { font-size: 24px !important; }
  .offer-total-bar .label { font-size: 11px !important; }
  .offer-footer { padding: 12px 20px !important; font-size: 10px !important; line-height: 1.6 !important; }
}