/* ============================================================
   Global Tax Calculator — Stylesheet
   Dark cosmic theme with vibrant accents
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Syne:wght@400;600;700;800&family=DM+Sans:wght@300;400;500&display=swap');

/* ── Root Variables ── */
.gtc-wrapper {
  --bg-base:    #0c0f1e;
  --bg-card:    #131729;
  --bg-panel:   #181c32;
  --bg-hover:   #1e2340;
  --border:     rgba(255,255,255,.07);
  --border-glow:rgba(99,179,237,.25);
  --accent:     #4f8ef7;
  --accent2:    #a78bfa;
  --accent3:    #34d399;
  --gold:       #fbbf24;
  --danger:     #f87171;
  --text-h:     #f0f4ff;
  --text-b:     #9baacf;
  --text-m:     #c5d0ea;
  --radius:     16px;
  --shadow:     0 8px 40px rgba(0,0,0,.5);
  --font-h:     'Syne', sans-serif;
  --font-b:     'DM Sans', sans-serif;

  font-family: var(--font-b);
  background:  var(--bg-base);
  color:       var(--text-m);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  position: relative;
  max-width: 1200px;
  margin: 24px auto;
}

/* Cosmic gradient blob in background */
.gtc-wrapper::before {
  content: '';
  position: absolute;
  inset: 0;
  background: 
    radial-gradient(ellipse 60% 50% at 80% 20%, rgba(79,142,247,.08) 0%, transparent 70%),
    radial-gradient(ellipse 50% 40% at 10% 70%, rgba(167,139,250,.07) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}
.gtc-wrapper > * { position: relative; z-index: 1; }

/* ── Header ── */
.gtc-header {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 36px 40px 28px;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(135deg, rgba(79,142,247,.06) 0%, transparent 60%);
}
.gtc-header-globe {
  font-size: 52px;
  filter: drop-shadow(0 0 18px rgba(79,142,247,.6));
  animation: floatGlobe 4s ease-in-out infinite;
}
@keyframes floatGlobe {
  0%,100%{ transform: translateY(0) rotate(-3deg); }
  50%    { transform: translateY(-6px) rotate(3deg); }
}
.gtc-title {
  font-family: var(--font-h);
  font-size: 2rem;
  font-weight: 800;
  color: var(--text-h);
  margin: 0 0 4px;
  letter-spacing: -.02em;
}
.gtc-title span {
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-left: 8px;
}
.gtc-subtitle {
  font-size: .85rem;
  color: var(--text-b);
  margin: 0;
  letter-spacing: .03em;
}

/* ── Body layout ── */
.gtc-body {
  display: grid;
  grid-template-columns: 380px 1fr;
  min-height: 600px;
}
@media(max-width:860px){ .gtc-body{ grid-template-columns: 1fr; } }

/* ── Panels ── */
.gtc-panel {
  padding: 32px;
}
.gtc-input-panel {
  background: var(--bg-panel);
  border-right: 1px solid var(--border);
}
.gtc-results-panel {
  background: var(--bg-card);
}
.gtc-panel-title {
  font-family: var(--font-h);
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-h);
  margin: 0 0 28px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.gtc-icon { font-size: 1.1rem; }

/* ── Fields ── */
.gtc-field {
  margin-bottom: 22px;
}
.gtc-label {
  display: block;
  font-size: .8rem;
  font-weight: 500;
  color: var(--text-b);
  text-transform: uppercase;
  letter-spacing: .08em;
  margin-bottom: 8px;
}
.gtc-optional {
  font-size: .75rem;
  color: var(--text-b);
  text-transform: none;
  opacity: .6;
  letter-spacing: 0;
}

/* ── Input wraps ── */
.gtc-input-wrap {
  display: flex;
  align-items: center;
  background: var(--bg-base);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  transition: border-color .2s;
}
.gtc-input-wrap:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(79,142,247,.12);
}
.gtc-currency-badge {
  padding: 0 14px;
  font-size: 1rem;
  font-weight: 700;
  color: var(--accent);
  background: rgba(79,142,247,.1);
  height: 46px;
  display: flex;
  align-items: center;
  border-right: 1px solid var(--border);
  min-width: 42px;
  justify-content: center;
}
.gtc-currency-code {
  padding: 0 12px;
  font-size: .75rem;
  color: var(--text-b);
  font-weight: 500;
  background: rgba(79,142,247,.06);
  height: 46px;
  display: flex;
  align-items: center;
  border-left: 1px solid var(--border);
  white-space: nowrap;
}
.gtc-input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text-h);
  font-family: var(--font-h);
  font-size: 1.05rem;
  font-weight: 600;
  padding: 0 14px;
  height: 46px;
}
.gtc-input::placeholder { color: rgba(155,170,207,.3); font-weight: 400; }

/* ── Slider ── */
.gtc-income-slider-wrap {
  margin-top: 10px;
}
.gtc-slider {
  width: 100%;
  -webkit-appearance: none;
  height: 4px;
  border-radius: 4px;
  background: var(--bg-hover);
  outline: none;
}
.gtc-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  cursor: pointer;
  box-shadow: 0 0 8px rgba(79,142,247,.5);
  transition: transform .15s;
}
.gtc-slider::-webkit-slider-thumb:hover { transform: scale(1.2); }
.gtc-slider-labels {
  display: flex;
  justify-content: space-between;
  font-size: .72rem;
  color: var(--text-b);
  margin-top: 4px;
}

/* ── Country Dropdown ── */
.gtc-country-search-wrap {
  position: relative;
  margin-bottom: 10px;
}
.gtc-search-input {
  width: 100%;
  background: var(--bg-base);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 16px;
  color: var(--text-h);
  font-size: .9rem;
  font-family: var(--font-b);
  outline: none;
  box-sizing: border-box;
  transition: border-color .2s;
}
.gtc-search-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(79,142,247,.12);
}
.gtc-country-dropdown {
  position: absolute;
  top: calc(100% + 4px);
  left: 0; right: 0;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  max-height: 260px;
  overflow-y: auto;
  z-index: 999;
  display: none;
  box-shadow: 0 16px 48px rgba(0,0,0,.6);
}
.gtc-country-dropdown.open { display: block; }
.gtc-country-dropdown::-webkit-scrollbar { width: 4px; }
.gtc-country-dropdown::-webkit-scrollbar-track { background: transparent; }
.gtc-country-dropdown::-webkit-scrollbar-thumb { background: var(--bg-hover); border-radius: 2px; }
.gtc-region-label {
  padding: 8px 16px 4px;
  font-size: .68rem;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: var(--text-b);
  font-weight: 600;
  border-top: 1px solid var(--border);
}
.gtc-region-group:first-child .gtc-region-label { border-top: none; }
.gtc-country-option {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 16px;
  cursor: pointer;
  transition: background .15s;
  font-size: .88rem;
}
.gtc-country-option:hover, .gtc-country-option.active {
  background: var(--bg-hover);
}
.gtc-flag { font-size: 1.2rem; }
.gtc-cname { flex: 1; color: var(--text-m); }
.gtc-curr { font-size: .72rem; color: var(--text-b); }

.gtc-selected-country {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  background: var(--bg-base);
  border: 1px solid var(--border);
  border-radius: 10px;
  font-size: .9rem;
  color: var(--text-m);
}
#gtc-sel-flag { font-size: 1.3rem; }

/* ── Radio Group ── */
.gtc-radio-group { display: flex; flex-direction: column; gap: 6px; }
.gtc-radio {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  cursor: pointer;
  font-size: .85rem;
  color: var(--text-m);
  transition: all .15s;
}
.gtc-radio:has(input:checked) {
  border-color: var(--accent);
  background: rgba(79,142,247,.08);
  color: var(--text-h);
}
.gtc-radio input { accent-color: var(--accent); }

/* ── Select ── */
.gtc-select {
  width: 100%;
  background: var(--bg-base);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 14px;
  color: var(--text-m);
  font-size: .9rem;
  font-family: var(--font-b);
  outline: none;
  cursor: pointer;
}
.gtc-select:focus { border-color: var(--accent); }

/* ── Calculate Button ── */
.gtc-btn {
  width: 100%;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent2) 100%);
  border: none;
  border-radius: 12px;
  padding: 14px 24px;
  color: #fff;
  font-family: var(--font-h);
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-top: 8px;
  transition: all .2s;
  box-shadow: 0 4px 20px rgba(79,142,247,.35);
  letter-spacing: .02em;
}
.gtc-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(79,142,247,.5);
}
.gtc-btn:active { transform: translateY(0); }
.gtc-btn-icon { font-size: 1.1rem; transition: transform .2s; }
.gtc-btn:hover .gtc-btn-icon { transform: translateX(4px); }

/* ── Placeholder ── */
.gtc-placeholder {
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 60px 32px;
  color: var(--text-b);
  font-size: .9rem;
  line-height: 1.7;
  gap: 16px;
}
.gtc-placeholder-icon { font-size: 4rem; opacity: .4; }

/* ── Result Header ── */
.gtc-result-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 24px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
}
.gtc-result-flag { font-size: 2.5rem; }
.gtc-result-country {
  font-family: var(--font-h);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-h);
}
.gtc-result-year {
  font-size: .78rem;
  color: var(--text-b);
  margin-top: 2px;
}
.gtc-effective-badge {
  margin-left: auto;
  text-align: center;
  background: linear-gradient(135deg, rgba(79,142,247,.15), rgba(167,139,250,.1));
  border: 1px solid var(--border-glow);
  border-radius: 12px;
  padding: 10px 20px;
}
.gtc-effective-pct {
  display: block;
  font-family: var(--font-h);
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--accent);
}
.gtc-effective-label {
  font-size: .7rem;
  color: var(--text-b);
  text-transform: uppercase;
  letter-spacing: .06em;
}

/* ── Summary Cards ── */
.gtc-summary-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 24px;
}
.gtc-card {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px 20px;
  transition: transform .2s;
}
.gtc-card:hover { transform: translateY(-2px); }
.gtc-card-label {
  font-size: .72rem;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--text-b);
  margin-bottom: 6px;
}
.gtc-card-value {
  font-family: var(--font-h);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-h);
  word-break: break-all;
}
.gtc-card-income  { border-top: 2px solid var(--accent3); }
.gtc-card-tax     { border-top: 2px solid var(--danger); }
.gtc-card-ss      { border-top: 2px solid var(--gold); }
.gtc-card-net     { border-top: 2px solid var(--accent); }
.gtc-card-income .gtc-card-value  { color: var(--accent3); }
.gtc-card-tax .gtc-card-value     { color: var(--danger); }
.gtc-card-ss .gtc-card-value      { color: var(--gold); }
.gtc-card-net .gtc-card-value     { color: var(--accent); }

/* ── Bar Chart ── */
.gtc-bar-section { margin-bottom: 24px; }
.gtc-bar-label {
  font-size: .78rem;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--text-b);
  margin-bottom: 10px;
}
.gtc-bar {
  height: 28px;
  border-radius: 8px;
  overflow: hidden;
  display: flex;
  background: var(--bg-base);
}
.gtc-bar-net, .gtc-bar-tax, .gtc-bar-ss {
  height: 100%;
  transition: width .6s cubic-bezier(.4,0,.2,1);
}
.gtc-bar-net { background: linear-gradient(90deg, #34d399, #059669); }
.gtc-bar-tax { background: linear-gradient(90deg, #f87171, #dc2626); }
.gtc-bar-ss  { background: linear-gradient(90deg, #fbbf24, #d97706); }
.gtc-bar-legend {
  display: flex;
  gap: 16px;
  margin-top: 8px;
  font-size: .75rem;
  color: var(--text-b);
}
.dot {
  display: inline-block;
  width: 8px; height: 8px;
  border-radius: 50%;
  margin-right: 4px;
}
.dot-net { background: #34d399; }
.dot-tax { background: #f87171; }
.dot-ss  { background: #fbbf24; }

/* ── Stats Row ── */
.gtc-stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-bottom: 24px;
}
@media(max-width:700px){ .gtc-stats-row{ grid-template-columns: 1fr 1fr; } }
.gtc-stat {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px;
  text-align: center;
}
.gtc-stat-label {
  font-size: .7rem;
  color: var(--text-b);
  text-transform: uppercase;
  letter-spacing: .06em;
  margin-bottom: 6px;
}
.gtc-stat-value {
  font-family: var(--font-h);
  font-size: .95rem;
  font-weight: 700;
  color: var(--text-h);
}

/* ── Breakdown Table ── */
.gtc-breakdown-section { margin-bottom: 20px; }
.gtc-breakdown-title {
  font-size: .78rem;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--text-b);
  margin-bottom: 12px;
}
.gtc-table {
  width: 100%;
  border-collapse: collapse;
  font-size: .82rem;
}
.gtc-table th {
  padding: 8px 12px;
  text-align: left;
  background: var(--bg-panel);
  color: var(--text-b);
  font-size: .7rem;
  text-transform: uppercase;
  letter-spacing: .07em;
  border-bottom: 1px solid var(--border);
}
.gtc-table td {
  padding: 9px 12px;
  border-bottom: 1px solid rgba(255,255,255,.04);
  color: var(--text-m);
  vertical-align: middle;
}
.gtc-table tr:last-child td { border-bottom: none; }
.gtc-table tr:hover td { background: var(--bg-hover); }

/* Slab number badge */
.gtc-slab-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px; height: 18px;
  border-radius: 50%;
  background: rgba(79,142,247,.12);
  color: var(--accent);
  font-size: .65rem;
  font-weight: 700;
  margin-right: 8px;
  flex-shrink: 0;
}

/* Zero-rate (exempt) slab row */
.gtc-tr-zero td { opacity: .65; }
.gtc-rate-badge {
  display: inline-block;
  background: rgba(79,142,247,.15);
  color: var(--accent);
  padding: 2px 8px;
  border-radius: 4px;
  font-size: .75rem;
  font-weight: 600;
}
.gtc-rate-zero {
  background: rgba(52,211,153,.1);
  color: var(--accent3);
}
.gtc-zero-tax { color: var(--text-b); font-style: italic; }
.gtc-tax-amt  { color: var(--danger); font-weight: 600; }
.gtc-cumulative { color: var(--accent2); font-weight: 500; }
.gtc-num { text-align: right; font-variant-numeric: tabular-nums; }

/* Total row */
.gtc-tr-total td {
  background: rgba(79,142,247,.07);
  border-top: 2px solid rgba(79,142,247,.25);
  color: var(--text-h);
  font-size: .85rem;
}
.gtc-tr-last td { border-bottom: 2px solid rgba(79,142,247,.2); }
.gtc-no-tax {
  text-align: center;
  color: var(--accent3);
  padding: 20px !important;
  font-style: italic;
}

/* ── Validation Box ── */
.gtc-validation-box {
  border-radius: 10px;
  padding: 14px 18px;
  margin-bottom: 18px;
  font-size: .8rem;
  line-height: 1.8;
}
.gtc-valid-ok  { background: rgba(52,211,153,.07); border: 1px solid rgba(52,211,153,.25); }
.gtc-valid-err { background: rgba(248,113,113,.07); border: 1px solid rgba(248,113,113,.25); }
.gtc-valid-title {
  font-family: var(--font-h);
  font-weight: 700;
  font-size: .85rem;
  color: var(--text-h);
  margin-bottom: 8px;
}
.gtc-valid-rows { display: flex; flex-direction: column; gap: 2px; }
.gtc-valid-row {
  display: flex;
  justify-content: space-between;
  color: var(--text-b);
  gap: 12px;
}
.gtc-valid-formula {
  font-size: .75rem;
  color: var(--text-b);
  font-variant-numeric: tabular-nums;
}
.gtc-valid-divider {
  height: 1px;
  background: var(--border);
  margin: 6px 0;
}
.gtc-valid-row code {
  background: rgba(255,255,255,.05);
  border-radius: 4px;
  padding: 1px 7px;
  font-size: .78rem;
  color: var(--text-h);
  font-variant-numeric: tabular-nums;
}

/* ── Notes & Disclaimer ── */
.gtc-notes {
  background: rgba(167,139,250,.08);
  border: 1px solid rgba(167,139,250,.2);
  border-radius: 10px;
  padding: 12px 16px;
  font-size: .8rem;
  color: var(--text-b);
  line-height: 1.6;
  margin-bottom: 14px;
}
.gtc-notes::before { content: 'ℹ️ '; }
.gtc-disclaimer {
  font-size: .72rem;
  color: rgba(155,170,207,.5);
  line-height: 1.6;
  padding: 8px 0;
  border-top: 1px solid var(--border);
}

/* ── Loading ── */
.gtc-loading {
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  color: var(--text-b);
  font-size: .9rem;
}
.gtc-spinner {
  width: 40px; height: 40px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin .7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Footer ── */
.gtc-footer {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 16px 32px;
  border-top: 1px solid var(--border);
  font-size: .75rem;
  color: var(--text-b);
  background: var(--bg-base);
}

/* ── Scrollbar for results ── */
.gtc-result-content {
  max-height: 80vh;
  overflow-y: auto;
  padding-right: 4px;
}
.gtc-result-content::-webkit-scrollbar { width: 4px; }
.gtc-result-content::-webkit-scrollbar-track { background: transparent; }
.gtc-result-content::-webkit-scrollbar-thumb { background: var(--bg-hover); border-radius: 2px; }

/* ── Responsiveness ── */
@media(max-width:480px){
  .gtc-header { padding: 24px 20px; }
  .gtc-panel  { padding: 20px; }
  .gtc-summary-cards { grid-template-columns: 1fr 1fr; }
  .gtc-title  { font-size: 1.4rem; }
}