/* ── Reset & base ────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:        #f1f5f9;
  --surface:   #ffffff;
  --border:    #e2e8f0;
  --text:      #0f172a;
  --text-2:    #475569;
  --text-3:    #94a3b8;
  --primary:   #2563eb;
  --primary-h: #1d4ed8;
  --danger:    #dc2626;
  --success:   #16a34a;
  --header-bg: #1e293b;
  --header-fg: #f8fafc;

  /* data-type badge colours */
  --c-currency:  #dbeafe; --c-currency-t:  #1d4ed8;
  --c-date:      #ede9fe; --c-date-t:      #6d28d9;
  --c-string:    #f1f5f9; --c-string-t:    #334155;
  --c-integer:   #dcfce7; --c-integer-t:   #166534;
  --c-percent:   #fef9c3; --c-percent-t:   #854d0e;
  --c-boolean:   #fee2e2; --c-boolean-t:   #991b1b;
  --c-ratio:     #cffafe; --c-ratio-t:     #155e75;
  --c-encrypted: #fce7f3; --c-encrypted-t: #9d174d;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  font-size: 14px;
  color: var(--text);
  background: var(--bg);
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow: hidden;
}

/* ── Header ──────────────────────────────────────────────────────────────── */
header {
  background: var(--header-bg);
  color: var(--header-fg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.25rem;
  height: 52px;
  flex-shrink: 0;
  gap: 1rem;
}

header h1 {
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

#user-email {
  font-size: 0.8rem;
  color: #94a3b8;
  max-width: 200px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ── Toolbar ─────────────────────────────────────────────────────────────── */
.toolbar {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.5rem 1.25rem;
  flex-shrink: 0;
  gap: 0.75rem;
}

.toolbar-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* ── Main layout ─────────────────────────────────────────────────────────── */
main {
  flex: 1;
  display: grid;
  grid-template-columns: 280px 1fr;
  overflow: hidden;
}

/* ── Source panel ────────────────────────────────────────────────────────── */
.source-panel {
  background: var(--surface);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.source-panel h2,
.target-panel h2 {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-2);
  padding: 0.75rem 1rem 0.5rem;
}

.source-input {
  padding: 0 1rem 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

#columns-input {
  width: 100%;
  height: 90px;
  resize: vertical;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.5rem 0.6rem;
  font-size: 0.8rem;
  font-family: "SFMono-Regular", Consolas, monospace;
  line-height: 1.5;
  color: var(--text);
  background: #f8fafc;
}
#columns-input:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px #dbeafe; }

.source-chips {
  flex: 1;
  overflow-y: auto;
  padding: 0.25rem 1rem 0.75rem;
  display: flex;
  flex-wrap: wrap;
  align-content: flex-start;
  gap: 0.35rem;
}

.source-stats {
  padding: 0.5rem 1rem;
  font-size: 0.75rem;
  color: var(--text-2);
  border-top: 1px solid var(--border);
  min-height: 30px;
}

/* ── Chips ───────────────────────────────────────────────────────────────── */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: #f1f5f9;
  border: 1px solid var(--border);
  border-radius: 99px;
  padding: 3px 10px 3px 6px;
  font-size: 0.78rem;
  cursor: grab;
  user-select: none;
  transition: background 0.1s, border-color 0.1s, opacity 0.15s;
  max-width: 220px;
}
.chip:hover { background: #e2e8f0; border-color: #cbd5e1; }
.chip:active { cursor: grabbing; }

.chip-mapped {
  background: #dcfce7;
  border-color: #86efac;
  color: #166534;
}
.chip-mapped:hover { background: #bbf7d0; }

.chip-dragging { opacity: 0.4; }

.chip-grip { font-size: 0.7rem; color: var(--text-3); flex-shrink: 0; }
.chip-label { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.chip-check { font-size: 0.7rem; color: #16a34a; flex-shrink: 0; }

/* ── Target panel ────────────────────────────────────────────────────────── */
.target-panel {
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.target-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  padding-bottom: 0.5rem;
}

.target-filters {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0 1rem 0.25rem;
  flex-wrap: wrap;
}

#search-input {
  flex: 1;
  min-width: 160px;
  height: 30px;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0 0.6rem;
  font-size: 0.82rem;
}
#search-input:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px #dbeafe; }

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 0.78rem;
  color: var(--text-2);
  cursor: pointer;
  white-space: nowrap;
}
.checkbox-label input { cursor: pointer; accent-color: var(--primary); }

#target-fields {
  flex: 1;
  overflow-y: auto;
}

/* ── Target rows ─────────────────────────────────────────────────────────── */
.target-row {
  display: grid;
  grid-template-columns: 1fr 220px;
  align-items: center;
  padding: 0.45rem 1rem;
  border-bottom: 1px solid var(--border);
  transition: background 0.1s;
}
.target-row:last-child { border-bottom: none; }
.target-row:hover { background: #f8fafc; }
.target-row-mapped { background: #f0fdf4; }
.target-row-mapped:hover { background: #dcfce7; }

.target-info {
  display: flex;
  flex-direction: column;
  gap: 3px;
  min-width: 0;
}

.target-name {
  font-size: 0.85rem;
  font-weight: 500;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.target-meta {
  display: flex;
  align-items: center;
  gap: 5px;
  flex-wrap: wrap;
}

/* ── Data-type badges ────────────────────────────────────────────────────── */
.type-badge {
  font-size: 0.68rem;
  font-weight: 600;
  border-radius: 4px;
  padding: 1px 6px;
  white-space: nowrap;
}
.type-currency  { background: var(--c-currency);  color: var(--c-currency-t); }
.type-date      { background: var(--c-date);      color: var(--c-date-t); }
.type-string    { background: var(--c-string);    color: var(--c-string-t); }
.type-integer   { background: var(--c-integer);   color: var(--c-integer-t); }
.type-percent   { background: var(--c-percent);   color: var(--c-percent-t); }
.type-boolean   { background: var(--c-boolean);   color: var(--c-boolean-t); }
.type-ratio     { background: var(--c-ratio);     color: var(--c-ratio-t); }
.type-encrypted { background: var(--c-encrypted); color: var(--c-encrypted-t); }

.rolls-badge {
  font-size: 0.72rem;
  color: var(--text-3);
}
.rolls-none { color: #cbd5e1; }
.key-badge { font-size: 0.72rem; }

/* ── Drop zone ───────────────────────────────────────────────────────────── */
.drop-zone {
  border: 2px dashed #cbd5e1;
  border-radius: 8px;
  padding: 6px 10px;
  min-height: 36px;
  display: flex;
  align-items: center;
  transition: border-color 0.15s, background 0.15s;
  cursor: default;
}

.drop-hint {
  font-size: 0.75rem;
  color: var(--text-3);
  font-style: italic;
}

.drop-zone-active {
  border-color: var(--primary);
  background: #eff6ff;
}

.mapped-chip {
  display: flex;
  align-items: center;
  gap: 6px;
  background: #dcfce7;
  border: 1px solid #86efac;
  border-radius: 6px;
  padding: 3px 6px 3px 10px;
  width: 100%;
}

.mapped-label {
  font-size: 0.78rem;
  color: #166534;
  font-weight: 500;
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ── Buttons ─────────────────────────────────────────────────────────────── */
button {
  font-family: inherit;
  font-size: 0.82rem;
  font-weight: 500;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  padding: 0 0.75rem;
  height: 30px;
  white-space: nowrap;
  transition: background 0.12s, opacity 0.12s;
}
button:disabled { opacity: 0.55; cursor: not-allowed; }

.btn-primary {
  background: var(--primary);
  color: #fff;
}
.btn-primary:hover:not(:disabled) { background: var(--primary-h); }

.btn-secondary {
  background: #f1f5f9;
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-secondary:hover:not(:disabled) { background: #e2e8f0; }

.btn-danger {
  background: #fee2e2;
  color: var(--danger);
}
.btn-danger:hover:not(:disabled) { background: #fecaca; }

.unmap-btn {
  background: none;
  border: none;
  color: #4ade80;
  font-size: 1rem;
  line-height: 1;
  padding: 0 2px;
  height: auto;
  cursor: pointer;
  flex-shrink: 0;
}
.unmap-btn:hover { color: var(--danger); }

/* ── Inputs / selects (shared) ───────────────────────────────────────────── */
input[type="text"],
input[type="email"],
input[type="password"],
select {
  font-family: inherit;
  font-size: 0.82rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0 0.6rem;
  height: 30px;
  color: var(--text);
  background: var(--surface);
}
input:focus, select:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px #dbeafe; }

#load-select { min-width: 180px; max-width: 260px; }
#mapping-name { min-width: 160px; }
#type-filter  { min-width: 110px; }

/* ── Toast ───────────────────────────────────────────────────────────────── */
.toast {
  position: fixed;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  padding: 0.5rem 1.25rem;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 500;
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s, transform 0.2s;
  z-index: 999;
}
.toast-visible { opacity: 1; transform: translateX(-50%) translateY(0); }
.toast-success { background: #166534; color: #fff; }
.toast-error   { background: #991b1b; color: #fff; }

/* ── Panel hint ──────────────────────────────────────────────────────────── */
.panel-hint {
  font-size: 0.8rem;
  color: var(--text-3);
  padding: 0.5rem 0;
  line-height: 1.5;
}

/* ── Auth page ───────────────────────────────────────────────────────────── */
body.auth-page {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100vh;
  overflow: auto;
  background: var(--bg);
}

.auth-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: 0 4px 24px rgba(0,0,0,0.08);
  padding: 2rem 2.25rem;
  width: 100%;
  max-width: 380px;
}

.auth-card h1 {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.25rem;
}

.auth-subtitle {
  font-size: 0.82rem;
  color: var(--text-2);
  margin-bottom: 1.5rem;
}

.auth-tabs {
  display: flex;
  gap: 0;
  margin-bottom: 1.25rem;
  border-bottom: 2px solid var(--border);
}

.tab-btn {
  background: none;
  border: none;
  border-radius: 0;
  padding: 0 0.1rem;
  height: 36px;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-2);
  cursor: pointer;
  margin-right: 1.25rem;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  transition: color 0.15s, border-color 0.15s;
}
.tab-btn.active { color: var(--primary); border-bottom-color: var(--primary); }
.tab-btn:hover  { color: var(--text); }

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  margin-bottom: 0.9rem;
}

.form-group label {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-2);
}

.form-group input {
  width: 100%;
  height: 38px;
  font-size: 0.9rem;
}

#auth-submit-btn {
  width: 100%;
  height: 38px;
  font-size: 0.9rem;
  margin-top: 0.5rem;
  background: var(--primary);
  color: #fff;
}
#auth-submit-btn:hover:not(:disabled) { background: var(--primary-h); }

.auth-msg {
  font-size: 0.8rem;
  padding: 0.4rem 0.6rem;
  border-radius: 6px;
  margin-bottom: 0.75rem;
  min-height: 1px;
}
.auth-msg-error { background: #fee2e2; color: #991b1b; }
.auth-msg-info  { background: #dbeafe; color: #1e40af; }