/* =============================================
   GLOBAL RESET & BASE
   ============================================= */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:        #080d1a;
  --bg2:       #0d1428;
  --surface:   #111827;
  --surface2:  #1a2540;
  --border:    rgba(255,255,255,0.08);
  --blue:      #3b82f6;
  --blue-glow: rgba(59,130,246,0.25);
  --green:     #10b981;
  --green-glow:rgba(16,185,129,0.25);
  --purple:    #8b5cf6;
  --orange:    #f59e0b;
  --red:       #ef4444;
  --text:      #f1f5f9;
  --text2:     #94a3b8;
  --text3:     #64748b;
  --radius:    16px;
  --radius-sm: 10px;
  --shadow:    0 4px 24px rgba(0,0,0,0.4);
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  font-size: 15px;
  line-height: 1.6;
}

/* =============================================
   HEADER
   ============================================= */
.header {
  background: linear-gradient(135deg, #0d1428 0%, #111827 100%);
  border-bottom: 1px solid var(--border);
  padding: 18px 32px;
  position: sticky; top: 0; z-index: 100;
  backdrop-filter: blur(12px);
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.logo {
  display: flex;
  align-items: center;
  gap: 14px;
}

.logo-icon {
  font-size: 2.2rem;
  filter: drop-shadow(0 0 12px rgba(16,185,129,0.5));
}

.logo-title {
  font-size: 1.35rem;
  font-weight: 800;
  background: linear-gradient(90deg, #3b82f6, #10b981);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
}

.logo-sub {
  font-size: 0.75rem;
  color: var(--text3);
  font-weight: 400;
}

.currency-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
}

.currency-wrap label {
  font-size: 0.8rem;
  color: var(--text3);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.currency-wrap select {
  background: var(--surface2);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  cursor: pointer;
  outline: none;
  transition: border-color 0.2s;
}

.currency-wrap select:focus { border-color: var(--blue); }

/* =============================================
   MAIN LAYOUT
   ============================================= */
.main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 32px 24px 64px;
}

/* =============================================
   TABS
   ============================================= */
.tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 28px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 0;
}

.tab {
  background: transparent;
  border: none;
  color: var(--text3);
  padding: 10px 22px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: color 0.2s, border-color 0.2s;
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
  font-family: 'Inter', sans-serif;
}

.tab:hover { color: var(--text); }

.tab.active {
  color: var(--blue);
  border-bottom-color: var(--blue);
}

.tab-content { display: none; }
.tab-content.active { display: block; }

/* =============================================
   CARD
   ============================================= */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
}

.card.accent-green  { border-top: 3px solid var(--green);  }
.card.accent-blue   { border-top: 3px solid var(--blue);   }
.card.accent-purple { border-top: 3px solid var(--purple); }
.card.accent-orange { border-top: 3px solid var(--orange); }
.card.accent-blue-border  { border: 1px solid rgba(59,130,246,0.35); }
.card.accent-green-border { border: 1px solid rgba(16,185,129,0.35); }

.card-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 22px;
}

/* =============================================
   FORM
   ============================================= */
.form-card { margin-bottom: 24px; }

.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 18px;
}

.field { display: flex; flex-direction: column; gap: 6px; }
.field-full { grid-column: 1 / -1; }

.field label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text2);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.input-wrap {
  display: flex;
  align-items: center;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  transition: border-color 0.25s, box-shadow 0.25s;
}

.input-wrap:focus-within {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px var(--blue-glow);
}

.input-wrap.error { border-color: var(--red); }

.input-prefix, .input-suffix {
  padding: 0 12px;
  font-size: 0.85rem;
  color: var(--text3);
  background: var(--surface2);
  user-select: none;
  white-space: nowrap;
}

.input-suffix { border-left: 1px solid var(--border); }

.input-wrap input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text);
  padding: 11px 12px;
  font-size: 0.95rem;
  font-family: 'Inter', sans-serif;
  width: 100%;
}

.input-wrap input::placeholder { color: var(--text3); }

/* Hide number arrows */
input[type=number]::-webkit-inner-spin-button,
input[type=number]::-webkit-outer-spin-button { -webkit-appearance: none; margin: 0; }
input[type=number] { -moz-appearance: textfield; }

.field-error {
  font-size: 0.75rem;
  color: var(--red);
  min-height: 16px;
  font-weight: 500;
}

/* =============================================
   RADIO GROUP
   ============================================= */
.radio-group {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.radio-label {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  font-size: 0.9rem;
  color: var(--text2);
  padding: 8px 16px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface2);
  transition: all 0.2s;
  font-weight: 500;
}

.radio-label:has(input:checked) {
  color: var(--blue);
  border-color: var(--blue);
  background: rgba(59,130,246,0.1);
}

.radio-label input { display: none; }

/* =============================================
   TOGGLE SWITCH
   ============================================= */
.inflation-row { gap: 8px; }

.toggle-label {
  display: flex;
  align-items: center;
  gap: 14px;
  cursor: pointer;
  font-size: 0.9rem;
  color: var(--text2);
  font-weight: 500;
}

.toggle {
  position: relative;
  width: 44px;
  height: 24px;
  flex-shrink: 0;
}

.toggle input { display: none; }

.slider {
  position: absolute;
  inset: 0;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 999px;
  cursor: pointer;
  transition: background 0.25s;
}

.slider::before {
  content: '';
  position: absolute;
  width: 18px; height: 18px;
  border-radius: 50%;
  background: var(--text3);
  top: 2px; left: 2px;
  transition: transform 0.25s, background 0.25s;
}

.toggle input:checked + .slider { background: rgba(16,185,129,0.3); border-color: var(--green); }
.toggle input:checked + .slider::before { transform: translateX(20px); background: var(--green); }

/* =============================================
   BUTTONS
   ============================================= */
.btn-row {
  display: flex;
  gap: 14px;
  margin-top: 26px;
  flex-wrap: wrap;
}

.btn-row.centered { justify-content: center; margin: 24px 0; }

.btn-primary {
  background: linear-gradient(135deg, var(--blue), #1d4ed8);
  color: #fff;
  border: none;
  padding: 13px 32px;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  font-family: 'Inter', sans-serif;
  transition: transform 0.15s, box-shadow 0.2s;
  box-shadow: 0 4px 16px rgba(59,130,246,0.35);
  letter-spacing: 0.02em;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(59,130,246,0.5);
}

.btn-primary:active { transform: translateY(0); }

.btn-secondary {
  background: transparent;
  color: var(--text2);
  border: 1px solid var(--border);
  padding: 13px 28px;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  font-family: 'Inter', sans-serif;
  transition: border-color 0.2s, color 0.2s;
}

.btn-secondary:hover { border-color: var(--text3); color: var(--text); }

.btn-export {
  background: linear-gradient(135deg, var(--green), #059669);
  color: #fff;
  border: none;
  padding: 9px 20px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 700;
  cursor: pointer;
  font-family: 'Inter', sans-serif;
  transition: transform 0.15s, box-shadow 0.2s;
  box-shadow: 0 4px 12px var(--green-glow);
  white-space: nowrap;
}

.btn-export:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(16,185,129,0.4);
}

/* =============================================
   RESULTS
   ============================================= */
.results { animation: fadeInUp 0.45s ease; }

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

.hidden { display: none !important; }

/* =============================================
   SUMMARY CARDS
   ============================================= */
.summary-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.summary-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 22px 16px;
  gap: 6px;
  transition: transform 0.2s;
}

.summary-card:hover { transform: translateY(-3px); }

.summary-icon { font-size: 1.8rem; margin-bottom: 4px; }

.summary-label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text3);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.summary-value {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--text);
  line-height: 1.2;
  word-break: break-all;
}

/* =============================================
   CHARTS
   ============================================= */
.charts-row {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 20px;
  margin-bottom: 24px;
}

.chart-card h3 {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text2);
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.chart-wrap {
  position: relative;
  width: 100%;
}

.chart-card:not(.chart-card-wide) .chart-wrap { max-width: 260px; margin: 0 auto; }

/* =============================================
   TABLE
   ============================================= */
.table-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  flex-wrap: wrap;
  gap: 10px;
}

.table-header-row h3 {
  font-size: 0.95rem;
  font-weight: 700;
}

.table-wrap {
  overflow-x: auto;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}

thead th {
  background: var(--surface2);
  color: var(--text3);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.72rem;
  letter-spacing: 0.07em;
  padding: 11px 14px;
  text-align: right;
  white-space: nowrap;
}

thead th:first-child { text-align: center; }
thead th:nth-child(2) { text-align: center; }

tbody tr {
  border-top: 1px solid var(--border);
  transition: background 0.15s;
}

tbody tr:hover { background: var(--surface2); }

tbody td {
  padding: 10px 14px;
  text-align: right;
  color: var(--text2);
}

tbody td:first-child { text-align: center; font-weight: 700; color: var(--blue); }
tbody td:nth-child(2) { text-align: center; color: var(--text3); }
tbody td:nth-child(5) { color: var(--green); font-weight: 700; }

/* =============================================
   COMPARE
   ============================================= */
.compare-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 20px;
}

.scenario-a-title { color: var(--blue) !important; }
.scenario-b-title { color: var(--green) !important; }

.compare-summary-grid {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 16px;
  margin-bottom: 20px;
  align-items: start;
}

.cmp-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 9px 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.9rem;
}

.cmp-row:last-child { border-bottom: none; }
.cmp-row span { color: var(--text3); }
.cmp-row strong { color: var(--text); font-weight: 700; }
.cmp-row.highlight strong { color: var(--green); font-size: 1.1rem; }

.winner-banner {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 8px;
  padding: 24px 16px;
  border: 1px solid rgba(245,158,11,0.4);
  background: rgba(245,158,11,0.07);
}

.winner-banner p { font-size: 0.9rem; font-weight: 600; color: var(--orange); }
.winner-diff { font-size: 1.3rem; font-weight: 800; color: var(--orange); }

/* =============================================
   FOOTER
   ============================================= */
.footer {
  text-align: center;
  padding: 24px;
  color: var(--text3);
  font-size: 0.78rem;
  border-top: 1px solid var(--border);
}

/* =============================================
   RESPONSIVE
   ============================================= */
@media (max-width: 900px) {
  .charts-row { grid-template-columns: 1fr; }
  .chart-card:not(.chart-card-wide) .chart-wrap { max-width: 220px; }
  .compare-grid { grid-template-columns: 1fr; }
  .compare-summary-grid { grid-template-columns: 1fr; }
  .winner-banner { order: -1; }
}

@media (max-width: 600px) {
  .header { padding: 14px 16px; }
  .main { padding: 20px 14px 48px; }
  .card { padding: 18px; }
  .logo-title { font-size: 1.1rem; }
  .logo-sub { display: none; }
  .summary-grid { grid-template-columns: 1fr 1fr; }
  .summary-value { font-size: 1.1rem; }
  .btn-primary, .btn-secondary { width: 100%; text-align: center; }
}