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

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

:root {
  --bg-deep:       #080b14;
  --bg-mid:        #0d1220;
  --bg-surface:    rgba(255,255,255,0.04);
  --bg-card:       rgba(255,255,255,0.06);
  --bg-card-hover: rgba(255,255,255,0.09);
  --glass-border:  rgba(255,255,255,0.10);
  --glass-shine:   rgba(255,255,255,0.18);

  --accent:        #f97316;
  --accent-glow:   rgba(249,115,22,0.35);
  --accent-soft:   rgba(249,115,22,0.15);
  --accent-2:      #b45309;
  --accent-2-glow: rgba(180,83,9,0.30);
  --green:         #ff6600;
  --green-glow:    rgba(255,106,0,0.25);
  --red:           #f87171;

  --text-primary:  #fff7f0;
  --text-secondary:#e1d3bf;
  --text-muted:    #be9e70;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;

  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Syne', sans-serif;
  background-color: var(--bg-deep);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
}

/* ── Ambient background orbs ── */
body::before,
body::after {
  content: '';
  position: fixed;
  border-radius: 50%;
  filter: blur(120px);
  pointer-events: none;
  z-index: 0;
}
body::before {
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(249,115,22,0.12) 0%, transparent 70%);
  top: -150px; left: -150px;
  animation: orbFloat 18s ease-in-out infinite alternate;
}
body::after {
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(180,83,9,0.10) 0%, transparent 70%);
  bottom: -100px; right: -100px;
  animation: orbFloat 22s ease-in-out infinite alternate-reverse;
}

@keyframes orbFloat {
  0%   { transform: translate(0, 0) scale(1); }
  50%  { transform: translate(40px, 30px) scale(1.08); }
  100% { transform: translate(-20px, 50px) scale(0.95); }
}

/* ── Grain overlay ── */
body .grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  opacity: 0.025;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
  background-size: 200px;
}

/* ── Layout ── */
.wrapper {
  position: relative;
  z-index: 2;
  max-width: 860px;
  margin: 0 auto;
  padding: 60px 24px 80px;
}

/* ── Header ── */
.header {
  text-align: center;
  margin-bottom: 56px;
  animation: fadeUp 0.7s ease both;
}
.header .badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: 'DM Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid rgba(249,115,22,0.25);
  border-radius: 100px;
  padding: 5px 14px;
  margin-bottom: 20px;
}
.header h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  background: linear-gradient(135deg, #f0f4ff 0%, var(--accent-2) 60%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 14px;
}
.header p {
  font-size: 15px;
  color: var(--text-secondary);
  max-width: 480px;
  margin: 0 auto;
  line-height: 1.7;
  font-weight: 400;
}

/* ── Steps indicator ── */
.steps {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  margin-bottom: 44px;
  animation: fadeUp 0.7s 0.1s ease both;
}
.step-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-muted);
  transition: color var(--transition);
}
.step-item.active { color: var(--accent); }
.step-item.done   { color: var(--green); }
.step-num {
  width: 26px; height: 26px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 11px;
  font-weight: 700;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--glass-border);
  transition: all var(--transition);
}
.step-item.active .step-num {
  background: var(--accent-soft);
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: 0 0 16px var(--accent-glow);
}
.step-item.done .step-num {
  background: var(--green-glow);
  border-color: var(--green);
  color: var(--green);
}
.step-connector {
  width: 48px; height: 1px;
  background: linear-gradient(90deg, var(--glass-border), var(--glass-border));
  margin: 0 4px;
  transition: background var(--transition);
}
.step-connector.done {
  background: linear-gradient(90deg, var(--green), rgba(52,211,153,0.3));
}

/* ── Glass card ── */
.card {
  background: var(--bg-card);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: 32px;
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  position: relative;
  overflow: hidden;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, var(--glass-shine) 50%, transparent 100%);
  pointer-events: none;
}
.card:hover {
  border-color: rgba(255,255,255,0.16);
  box-shadow: 0 8px 40px rgba(0,0,0,0.4);
}

/* ── Upload section ── */
.upload-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 20px;
  animation: fadeUp 0.7s 0.15s ease both;
}

@media (max-width: 600px) {
  .upload-grid { grid-template-columns: 1fr; }
}

.file-card {
  background: var(--bg-card);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  backdrop-filter: blur(20px);
  position: relative;
  overflow: hidden;
  transition: all var(--transition);
}
.file-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--glass-shine), transparent);
}
.file-card.loaded {
  border-color: rgba(255,106,0,0.35);
  box-shadow: 0 0 30px rgba(255,106,0,0.1), inset 0 0 30px rgba(255,106,0,0.3);
}
.file-tag {
  font-family: 'DM Mono', monospace;
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 8px;
}
.file-card h3 {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 16px;
  font-family: 'DM Mono', monospace;
}
.drop-zone {
  border: 1px dashed rgba(255,255,255,0.14);
  border-radius: var(--radius-md);
  padding: 24px 16px;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition);
  position: relative;
}
.drop-zone:hover,
.drop-zone.dragover {
  border-color: var(--accent);
  background: var(--accent-soft);
  box-shadow: 0 0 24px var(--accent-glow);
}
.drop-zone input[type="file"] {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}
.drop-icon {
  font-size: 28px;
  margin-bottom: 8px;
  display: block;
  transition: transform var(--transition);
}
.drop-zone:hover .drop-icon { transform: translateY(-3px); }
.drop-label {
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.5;
}
.drop-label strong {
  color: var(--accent);
  font-weight: 600;
}
.file-status {
  margin-top: 10px;
  font-size: 12px;
  min-height: 18px;
  color: var(--text-muted);
  font-family: 'DM Mono', monospace;
  transition: color var(--transition);
  display: flex;
  align-items: center;
  gap: 6px;
}
.file-status.ok  { color: var(--green); }
.file-status.err { color: var(--red); }

/* ── Field tags in file card ── */
.fields-preview {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 12px;
}
.field-chip {
  font-family: 'DM Mono', monospace;
  font-size: 10px;
  padding: 3px 10px;
  border-radius: 100px;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--glass-border);
  color: var(--text-secondary);
  white-space: nowrap;
}

/* ── Mapping section ── */
.mapping-section {
  animation: fadeUp 0.5s ease both;
}
.section-title {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.section-title::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--glass-border);
}

.mapping-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0 8px;
}
.mapping-table thead th {
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  font-weight: 600;
  padding: 0 12px 8px;
  text-align: left;
}
.mapping-table thead th:nth-child(2) { text-align: center; }
.mapping-table thead th:nth-child(3) { text-align: left; }

.mapping-row td {
  background: rgba(255,255,255,0.03);
  border-top: 1px solid rgba(255,255,255,0.05);
  border-bottom: 1px solid rgba(255,255,255,0.05);
  padding: 10px 12px;
  transition: background var(--transition);
}
.mapping-row:hover td { background: rgba(255,255,255,0.055); }
.mapping-row td:first-child {
  border-left: 1px solid rgba(255,255,255,0.05);
  border-radius: var(--radius-sm) 0 0 var(--radius-sm);
}
.mapping-row td:last-child {
  border-right: 1px solid rgba(255,255,255,0.05);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.field-source {
  font-family: 'DM Mono', monospace;
  font-size: 12px;
  color: var(--accent-2);
  font-weight: 500;
}
.arrow-cell {
  text-align: center;
  color: var(--text-muted);
  font-size: 16px;
}

select.field-select {
  font-family: 'DM Mono', monospace;
  font-size: 12px;
  color: var(--text-primary);
  background: rgba(255,255,255,0.07);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-sm);
  padding: 7px 30px 7px 12px;
  width: 100%;
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%238b95b0' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  transition: all var(--transition);
}
select.field-select:hover {
  border-color: var(--accent);
  background-color: var(--accent-soft);
}
select.field-select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}
select.field-select option {
  background: #1a2035;
  color: var(--text-primary);
}
select.field-select.skip {
  color: var(--text-muted);
  font-style: italic;
}

/* ── Preview box ── */
.preview-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(255,106,0,0.1);
  border: 1px solid rgba(255,106,0,0.3);
  border-radius: var(--radius-md);
  padding: 14px 20px;
  margin: 20px 0 0;
  animation: fadeUp 0.4s ease both;
}
.preview-bar .counts {
  font-family: 'DM Mono', monospace;
  font-size: 12px;
  color: var(--green);
  display: flex;
  align-items: center;
  gap: 8px;
}
.preview-bar .counts span { color: var(--text-secondary); }

/* ── Error ── */
.error-box {
  background: rgba(248,113,113,0.08);
  border: 1px solid rgba(248,113,113,0.25);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  font-size: 13px;
  color: var(--red);
  display: none;
  margin-bottom: 16px;
  animation: fadeUp 0.3s ease both;
}

/* ── Buttons ── */
.btn {
  font-family: 'Syne', sans-serif;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.03em;
  padding: 14px 28px;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  position: relative;
  overflow: hidden;
}
.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.12) 0%, transparent 60%);
  opacity: 0;
  transition: opacity var(--transition);
}
.btn:hover::after { opacity: 1; }

.btn-primary {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-2) 100%);
  color: #fff;
  box-shadow: 0 4px 24px var(--accent-glow), 0 0 0 1px rgba(255,255,255,0.08) inset;
  width: 100%;
  justify-content: center;
  font-size: 15px;
  padding: 16px 28px;
}
.btn-primary:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 8px 36px var(--accent-glow), 0 0 0 1px rgba(255,255,255,0.12) inset;
}
.btn-primary:active:not(:disabled) {
  transform: translateY(0);
}
.btn-primary:disabled {
  opacity: 0.35;
  cursor: not-allowed;
  transform: none;
}

/* ── Footer note ── */
.footer-note {
  text-align: center;
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 14px;
  font-family: 'DM Mono', monospace;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}
.footer-note::before,
.footer-note::after {
  content: '';
  width: 24px; height: 1px;
  background: var(--glass-border);
}

/* ── Animations ── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 0 20px var(--accent-glow); }
  50%       { box-shadow: 0 0 40px var(--accent-glow), 0 0 60px rgba(180,83,9,0.2); }
}

.pulse { animation: pulse-glow 3s ease-in-out infinite; }

/* ── Shimmer on load ── */
@keyframes shimmer {
  0%   { background-position: -400px 0; }
  100% { background-position: 400px 0; }
}
.shimmer {
  background: linear-gradient(90deg, rgba(255,255,255,0.03) 25%, rgba(255,255,255,0.08) 50%, rgba(255,255,255,0.03) 75%);
  background-size: 800px 100%;
  animation: shimmer 1.8s infinite;
}


/* ── Toggle switch ── */
.toggle-switch {
  display: inline-flex;
  align-items: center;
  cursor: pointer;
  flex-shrink: 0;
}
.toggle-switch input { display: none; }
.toggle-track {
  width: 48px; height: 26px;
  background: rgba(255,255,255,0.08);
  border: 1px solid var(--glass-border);
  border-radius: 100px;
  position: relative;
  transition: all var(--transition);
}
.toggle-thumb {
  position: absolute;
  top: 3px; left: 3px;
  width: 18px; height: 18px;
  border-radius: 50%;
  background: var(--text-muted);
  transition: all var(--transition);
  box-shadow: 0 2px 6px rgba(0,0,0,0.4);
}
.toggle-switch input:checked + .toggle-track {
  background: var(--accent-soft);
  border-color: var(--accent);
  box-shadow: 0 0 16px var(--accent-glow);
}
.toggle-switch input:checked + .toggle-track .toggle-thumb {
  transform: translateX(22px);
  background: var(--accent);
}

/* ── Radio pill ── */
.radio-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--glass-border);
  border-radius: 100px;
  padding: 8px 16px;
  transition: all var(--transition);
}
.radio-pill input { display: none; }
.radio-pill:has(input:checked) {
  background: var(--accent-soft);
  border-color: var(--accent);
  color: var(--text-primary);
  box-shadow: 0 0 16px var(--accent-glow);
}
.radio-pill:hover:not(:has(input:checked)) {
  background: rgba(255,255,255,0.07);
  border-color: rgba(255,255,255,0.2);
}

/* ── Success flash ── */
@keyframes successFlash {
  0%   { box-shadow: 0 0 0 rgba(52,211,153,0); }
  50%  { box-shadow: 0 0 60px rgba(52,211,153,0.4); }
  100% { box-shadow: 0 0 0 rgba(52,211,153,0); }
}
.flash-success { animation: successFlash 0.8s ease; }