@import url('https://fonts.googleapis.com/css2?family=Roboto:wght@400;500;700;900&display=swap');

#kb-calc {
  --kb-blue: #2E72D0;
  --kb-blue-light: #DFF0FE;
  --kb-blue-mid: #4788C7;
  --kb-yellow: #FFD856;
  --kb-yellow-hover: #FFC800;
  --kb-bg: #F1F1F1;
  --kb-white: #FFFFFF;
  --kb-dark: #222222;
  --kb-text: #333333;
  --kb-muted: #777777;
  --kb-green: #28A745;
  --kb-red: #DC3545;
  --kb-border: #E0E0E0;
  --kb-radius: 7px;
  --kb-shadow: 5px 5px 10px rgba(0,0,0,0.1);

  font-family: 'Roboto', sans-serif;
  max-width: 860px;
  margin: 30px auto;
  background: var(--kb-white);
  border-radius: 12px;
  box-shadow: var(--kb-shadow);
  overflow: hidden;
  color: var(--kb-text);
  line-height: 1.5;
}

#kb-calc * { box-sizing: border-box; margin: 0; padding: 0; }

/* === HEADER === */
#kb-calc .calc-header {
  background: var(--kb-blue-light);
  padding: 28px 32px;
  text-align: center;
  border-bottom: 3px solid var(--kb-blue);
  position: relative;
}

#kb-calc .calc-header .countdown {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--kb-white);
  border: 1px solid var(--kb-border);
  border-radius: 20px;
  padding: 5px 14px;
  font-size: 12px;
  font-weight: 500;
  color: var(--kb-muted);
  margin-bottom: 12px;
}

#kb-calc .calc-header .countdown .days {
  font-weight: 700;
  color: var(--kb-red);
  font-size: 14px;
}

#kb-calc .calc-header .countdown svg {
  width: 14px;
  height: 14px;
  stroke: var(--kb-red);
  flex-shrink: 0;
}

#kb-calc .calc-header h2 {
  font-size: 26px;
  font-weight: 900;
  color: var(--kb-dark);
  letter-spacing: -0.3px;
}

#kb-calc .calc-header h2 span { color: var(--kb-blue); }

#kb-calc .calc-header p {
  font-size: 14px;
  color: var(--kb-muted);
  margin-top: 6px;
}

/* === TABS === */
#kb-calc .calc-tabs {
  display: flex;
  background: var(--kb-bg);
  border-bottom: 1px solid var(--kb-border);
}

#kb-calc .calc-tab {
  flex: 1;
  padding: 14px 12px;
  text-align: center;
  font-size: 13px;
  font-weight: 500;
  color: var(--kb-muted);
  cursor: pointer;
  border: none;
  background: transparent;
  transition: all 0.2s;
  border-bottom: 3px solid transparent;
  font-family: 'Roboto', sans-serif;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
}

#kb-calc .calc-tab:hover { color: var(--kb-dark); background: rgba(223,240,254,0.5); }

#kb-calc .calc-tab.active {
  color: var(--kb-blue);
  font-weight: 700;
  background: var(--kb-white);
  border-bottom-color: var(--kb-blue);
}

#kb-calc .calc-tab .tab-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
}

#kb-calc .calc-tab .tab-icon svg {
  width: 20px;
  height: 20px;
  stroke: var(--kb-muted);
  fill: none;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

#kb-calc .calc-tab.active .tab-icon svg { stroke: var(--kb-blue); }
#kb-calc .calc-tab:hover .tab-icon svg { stroke: var(--kb-dark); }

/* === BODY === */
#kb-calc .calc-body { padding: 28px 32px; }

#kb-calc .calc-panel { display: none; }
#kb-calc .calc-panel.active { display: block; }

/* === FORM ELEMENTS === */
#kb-calc .field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 16px;
}

#kb-calc .field {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

#kb-calc .field.full { grid-column: 1 / -1; }

#kb-calc label {
  font-size: 13px;
  font-weight: 500;
  color: var(--kb-dark);
  display: flex;
  align-items: center;
  gap: 4px;
}

#kb-calc label .tip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--kb-blue-light);
  color: var(--kb-blue);
  font-size: 10px;
  font-weight: 700;
  cursor: help;
  position: relative;
}

#kb-calc label .tip:hover::after {
  content: attr(data-tip);
  position: absolute;
  bottom: 120%;
  left: 50%;
  transform: translateX(-50%);
  background: var(--kb-dark);
  color: #fff;
  padding: 8px 12px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 400;
  white-space: nowrap;
  max-width: 260px;
  white-space: normal;
  z-index: 10;
  line-height: 1.4;
  box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

#kb-calc input, #kb-calc select {
  border: 1px solid var(--kb-border);
  border-radius: var(--kb-radius);
  padding: 12px 14px;
  font-size: 15px;
  color: var(--kb-dark);
  font-family: 'Roboto', sans-serif;
  background: var(--kb-white);
  transition: border-color 0.2s, box-shadow 0.2s;
  width: 100%;
}

#kb-calc input:focus, #kb-calc select:focus {
  outline: none;
  border-color: var(--kb-blue);
  box-shadow: 0 0 0 3px rgba(46,114,208,0.12);
}

#kb-calc input::placeholder { color: #bbb; }

#kb-calc .info-banner {
  background: var(--kb-blue-light);
  border-left: 4px solid var(--kb-blue);
  border-radius: 0 var(--kb-radius) var(--kb-radius) 0;
  padding: 12px 16px;
  font-size: 13px;
  color: var(--kb-text);
  margin-bottom: 20px;
  line-height: 1.5;
  display: flex;
  gap: 10px;
  align-items: flex-start;
}

#kb-calc .info-banner svg {
  width: 18px;
  height: 18px;
  stroke: var(--kb-blue);
  fill: none;
  stroke-width: 1.5;
  flex-shrink: 0;
  margin-top: 1px;
}

#kb-calc .info-banner strong { color: var(--kb-blue); }

/* === CTA BUTTON === */
#kb-calc .cta-btn {
  display: block;
  width: 100%;
  background: var(--kb-yellow);
  color: var(--kb-dark);
  border: 2px solid var(--kb-dark);
  border-radius: var(--kb-radius);
  padding: 15px;
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.15s;
  font-family: 'Roboto', sans-serif;
  margin-top: 8px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

#kb-calc .cta-btn:hover {
  background: var(--kb-yellow-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

/* === RESULTS === */
#kb-calc .result-area {
  display: none;
  margin-top: 24px;
  border: 2px solid var(--kb-blue-light);
  border-radius: 10px;
  overflow: hidden;
}

#kb-calc .result-area.show { display: block; }

#kb-calc .result-header {
  background: var(--kb-blue-light);
  padding: 14px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

#kb-calc .result-header h3 {
  font-size: 14px;
  font-weight: 700;
  color: var(--kb-blue);
  text-transform: uppercase;
  letter-spacing: 1px;
  display: flex;
  align-items: center;
  gap: 6px;
}

#kb-calc .result-header h3 svg {
  width: 16px;
  height: 16px;
  stroke: var(--kb-blue);
  fill: none;
  stroke-width: 2;
}

#kb-calc .copy-btn {
  background: var(--kb-white);
  border: 1px solid var(--kb-border);
  border-radius: 5px;
  padding: 5px 12px;
  font-size: 11px;
  font-weight: 500;
  cursor: pointer;
  color: var(--kb-muted);
  font-family: 'Roboto', sans-serif;
  display: flex;
  align-items: center;
  gap: 4px;
}

#kb-calc .copy-btn svg {
  width: 13px;
  height: 13px;
  stroke: var(--kb-muted);
  fill: none;
  stroke-width: 1.5;
}

#kb-calc .copy-btn:hover { background: var(--kb-bg); }

#kb-calc .result-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  padding: 0;
}

#kb-calc .result-item {
  padding: 16px 20px;
  border-bottom: 1px solid var(--kb-border);
  border-right: 1px solid var(--kb-border);
}

#kb-calc .result-item:nth-child(2n) { border-right: none; }

#kb-calc .result-item.full {
  grid-column: 1 / -1;
  background: var(--kb-blue-light);
  border-right: none;
}

#kb-calc .result-item .rlabel {
  font-size: 11px;
  color: var(--kb-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 4px;
}

#kb-calc .result-item .rvalue {
  font-size: 22px;
  font-weight: 900;
  color: var(--kb-dark);
  letter-spacing: -0.5px;
}

#kb-calc .result-item .rvalue.profit { color: var(--kb-green); }
#kb-calc .result-item .rvalue.loss { color: var(--kb-red); }
#kb-calc .result-item .rvalue.blue { color: var(--kb-blue); }

#kb-calc .result-item .rnote {
  font-size: 11px;
  color: var(--kb-muted);
  margin-top: 3px;
}

/* === COMPARISON BAR === */
#kb-calc .compare-bar {
  margin-top: 16px;
  padding: 20px;
  background: #FFF9E6;
  border: 1px solid #FFE082;
  border-radius: var(--kb-radius);
}

#kb-calc .compare-bar h4 {
  font-size: 13px;
  font-weight: 700;
  color: var(--kb-dark);
  margin-bottom: 4px;
  display: flex;
  align-items: center;
  gap: 6px;
}

#kb-calc .compare-bar h4 svg {
  width: 16px;
  height: 16px;
  stroke: #D4A017;
  fill: none;
  stroke-width: 2;
}

#kb-calc .compare-bar .compare-desc {
  font-size: 12px;
  color: var(--kb-muted);
  margin-bottom: 14px;
  line-height: 1.5;
}

#kb-calc .bar-container {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

#kb-calc .bar-row {
  display: flex;
  align-items: center;
  gap: 12px;
}

#kb-calc .bar-label {
  width: 120px;
  font-size: 12px;
  font-weight: 500;
  color: var(--kb-text);
  flex-shrink: 0;
}

#kb-calc .bar-track {
  flex: 1;
  height: 28px;
  background: var(--kb-border);
  border-radius: 4px;
  overflow: hidden;
  position: relative;
}

#kb-calc .bar-fill {
  height: 100%;
  border-radius: 4px;
  display: flex;
  align-items: center;
  padding: 0 10px;
  font-size: 12px;
  font-weight: 700;
  color: #fff;
  min-width: 60px;
  transition: width 0.6s ease;
}

#kb-calc .bar-fill.red { background: var(--kb-red); }
#kb-calc .bar-fill.green { background: var(--kb-green); }
#kb-calc .bar-fill.blue { background: var(--kb-blue); }

#kb-calc .savings-badge {
  text-align: center;
  margin-top: 12px;
  padding: 10px;
  background: var(--kb-white);
  border-radius: var(--kb-radius);
  border: 1px dashed var(--kb-green);
}

#kb-calc .savings-badge .amount {
  font-size: 24px;
  font-weight: 900;
  color: var(--kb-green);
}

#kb-calc .savings-badge .desc {
  font-size: 12px;
  color: var(--kb-muted);
}

/* === MULTI TRANSACTION === */
#kb-calc .tx-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 16px;
  font-size: 13px;
}

#kb-calc .tx-table th {
  background: var(--kb-blue-light);
  padding: 10px 8px;
  text-align: left;
  font-size: 11px;
  font-weight: 700;
  color: var(--kb-blue);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

#kb-calc .tx-table td {
  padding: 6px 4px;
  border-bottom: 1px solid var(--kb-border);
}

#kb-calc .tx-table input {
  padding: 8px 10px;
  font-size: 13px;
  border: 1px solid var(--kb-border);
  border-radius: 5px;
  width: 100%;
}

#kb-calc .tx-table .remove-btn {
  background: none;
  border: none;
  color: var(--kb-red);
  cursor: pointer;
  font-size: 18px;
  padding: 4px 8px;
  display: flex;
  align-items: center;
  justify-content: center;
}

#kb-calc .tx-table .remove-btn svg {
  width: 16px;
  height: 16px;
  stroke: var(--kb-red);
  fill: none;
  stroke-width: 2;
}

#kb-calc .add-row-btn {
  background: var(--kb-blue-light);
  border: 1px dashed var(--kb-blue);
  border-radius: var(--kb-radius);
  padding: 10px;
  width: 100%;
  font-size: 13px;
  font-weight: 500;
  color: var(--kb-blue);
  cursor: pointer;
  font-family: 'Roboto', sans-serif;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

#kb-calc .add-row-btn svg {
  width: 16px;
  height: 16px;
  stroke: var(--kb-blue);
  fill: none;
  stroke-width: 2;
}

#kb-calc .add-row-btn:hover { background: #D0E8FC; }

/* === FOOTER === */
#kb-calc .calc-footer {
  padding: 16px 32px;
  background: var(--kb-bg);
  border-top: 1px solid var(--kb-border);
  font-size: 11px;
  color: var(--kb-muted);
  text-align: center;
  line-height: 1.6;
}

#kb-calc .calc-footer a {
  color: var(--kb-blue);
  text-decoration: none;
  font-weight: 500;
}

/* === STEP INDICATOR === */
#kb-calc .steps {
  display: flex;
  gap: 0;
  margin-bottom: 20px;
}

#kb-calc .step {
  flex: 1;
  text-align: center;
  padding: 10px 8px;
  font-size: 11px;
  font-weight: 500;
  color: var(--kb-muted);
  background: var(--kb-bg);
  border-bottom: 3px solid var(--kb-border);
  position: relative;
}

#kb-calc .step.active {
  color: var(--kb-blue);
  font-weight: 700;
  background: var(--kb-blue-light);
  border-bottom-color: var(--kb-blue);
}

#kb-calc .step .step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--kb-border);
  color: var(--kb-muted);
  font-size: 10px;
  font-weight: 700;
  margin-right: 4px;
}

#kb-calc .step.active .step-num {
  background: var(--kb-blue);
  color: #fff;
}

@media (max-width: 640px) {
  #kb-calc { margin: 16px; border-radius: 10px; }
  #kb-calc .calc-body { padding: 20px 16px; }
  #kb-calc .calc-header { padding: 20px 16px; }
  #kb-calc .field-row { grid-template-columns: 1fr; }
  #kb-calc .result-grid { grid-template-columns: 1fr; }
  #kb-calc .result-item { border-right: none; }
  #kb-calc .calc-tab { font-size: 11px; padding: 10px 6px; }
  #kb-calc .bar-label { width: 80px; font-size: 11px; }
  #kb-calc .calc-footer { padding: 12px 16px; }
}