/* ==========================================================================
   Amazon Inside Team — Fee Matching Workspace
   Design tokens
   ========================================================================== */
:root {
  --bg: #0A0E1A;
  --bg-grad-1: #0B1024;
  --bg-grad-2: #0A0E1A;
  --surface: #131B2E;
  --surface-alt: #182140;
  --surface-raised: #1B2542;
  --border: #29365A;
  --border-soft: #202B48;
  --text-primary: #E9ECF6;
  --text-muted: #93A0C2;
  --text-faint: #5E6B8F;

  --accent-blue: #5B7CFA;
  --accent-blue-dim: #3B4E9E;
  --accent-purple: #8B5CF6;
  --accent-orange: #FF9F40;
  --accent-orange-dim: #7A5228;

  --success: #34D399;
  --success-bg: rgba(52, 211, 153, 0.1);
  --danger: #F87171;
  --danger-bg: rgba(248, 113, 113, 0.1);
  --warning: #FBBF24;
  --warning-bg: rgba(251, 191, 36, 0.1);

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

  --shadow-card: 0 8px 30px rgba(3, 6, 16, 0.55);
  --shadow-btn: 0 6px 18px rgba(91, 124, 250, 0.28);

  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "Inter", Roboto, Helvetica, Arial, sans-serif;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* { box-sizing: border-box; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

html, body {
  margin: 0;
  padding: 0;
  min-height: 100%;
}

body {
  font-family: var(--font);
  color: var(--text-primary);
  background:
    radial-gradient(1100px 550px at 15% -10%, rgba(91, 124, 250, 0.14), transparent 60%),
    radial-gradient(900px 500px at 100% 0%, rgba(139, 92, 246, 0.10), transparent 55%),
    linear-gradient(180deg, var(--bg-grad-1), var(--bg-grad-2) 55%);
  background-attachment: fixed;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  max-width: 900px;
  margin: 0 auto;
  padding: 40px 20px 90px;
}

/* Skip link / focus visibility */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--accent-blue);
  outline-offset: 2px;
}

/* ==========================================================================
   Header
   ========================================================================== */
.site-header {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 6px 4px 34px;
}

.logo-mark {
  width: 50px;
  height: 50px;
  flex: none;
  filter: drop-shadow(0 4px 14px rgba(91, 124, 250, 0.35));
  animation: logoFloat 6s var(--ease) infinite;
}

@keyframes logoFloat {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-3px) rotate(1.5deg); }
}

.brand-text .brand-name {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--accent-orange);
  margin: 0 0 2px;
  text-transform: uppercase;
}

.brand-text h1 {
  font-size: 26px;
  font-weight: 700;
  margin: 0;
  letter-spacing: -0.01em;
  background: linear-gradient(90deg, #F2F4FC, #C7D0F2 65%, #A9B6EE);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.brand-text p {
  margin: 4px 0 0;
  color: var(--text-muted);
  font-size: 14.5px;
}

/* ==========================================================================
   Steps / Cards
   ========================================================================== */
.step {
  position: relative;
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 18px;
  margin-bottom: 22px;
}

.step-marker {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.step-num {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--surface-alt);
  border: 1px solid var(--border);
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  flex: none;
  transition: all 0.35s var(--ease);
}

.step.is-active .step-num,
.step.is-complete .step-num {
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
  border-color: transparent;
  color: #fff;
  box-shadow: 0 0 0 4px rgba(91, 124, 250, 0.15);
}

.step-line {
  width: 2px;
  flex: 1;
  margin-top: 4px;
  background: var(--border-soft);
  min-height: 24px;
}

.step:last-of-type .step-line { display: none; }

.card {
  background: linear-gradient(180deg, var(--surface-raised), var(--surface));
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-lg);
  padding: 22px 24px 24px;
  box-shadow: var(--shadow-card);
  transition: border-color 0.3s var(--ease), transform 0.3s var(--ease);
}

.card h2 {
  font-size: 17px;
  margin: 0 0 4px;
  font-weight: 650;
  letter-spacing: -0.01em;
}

.card .card-desc {
  margin: 0 0 16px;
  color: var(--text-muted);
  font-size: 14px;
}

/* ==========================================================================
   Textarea / Inputs
   ========================================================================== */
textarea.master-input {
  width: 100%;
  min-height: 150px;
  resize: vertical;
  background: #0C1224;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  padding: 14px 16px;
  font-family: "SFMono-Regular", Consolas, Menlo, monospace;
  font-size: 13px;
  line-height: 1.55;
  transition: border-color 0.25s var(--ease), box-shadow 0.25s var(--ease);
}

textarea.master-input:focus {
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 4px rgba(91, 124, 250, 0.14);
  outline: none;
}

textarea.master-input::placeholder {
  color: var(--text-faint);
}

.row {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 14px;
}

.inline-stat {
  font-size: 13.5px;
  color: var(--text-muted);
}

.inline-stat strong {
  color: var(--text-primary);
  font-variant-numeric: tabular-nums;
}

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
  position: relative;
  overflow: hidden;
  appearance: none;
  border: none;
  cursor: pointer;
  font-family: inherit;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.01em;
  padding: 11px 20px;
  border-radius: 10px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: transform 0.18s var(--ease), box-shadow 0.25s var(--ease), filter 0.25s var(--ease), background 0.25s var(--ease);
}

.btn:active { transform: translateY(1px) scale(0.99); }

.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
  box-shadow: var(--shadow-btn);
}

.btn-primary::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, transparent 30%, rgba(255,255,255,0.28) 50%, transparent 70%);
  transform: translateX(-120%);
  transition: transform 0.6s var(--ease);
}

.btn-primary:hover::after { transform: translateX(120%); }
.btn-primary:hover { filter: brightness(1.08); box-shadow: 0 10px 26px rgba(91, 124, 250, 0.4); transform: translateY(-1px); }
.btn-primary:disabled { filter: grayscale(0.4) brightness(0.7); cursor: not-allowed; box-shadow: none; transform: none; }

.btn-secondary {
  color: var(--text-primary);
  background: var(--surface-alt);
  border: 1px solid var(--border);
}
.btn-secondary:hover { border-color: var(--accent-blue); transform: translateY(-1px); background: #1D2947; }

.btn-ghost {
  color: var(--text-muted);
  background: transparent;
  border: 1px solid var(--border-soft);
}
.btn-ghost:hover { color: var(--text-primary); border-color: var(--border); }

.btn-orange {
  color: #1C1204;
  background: linear-gradient(135deg, #FFB05C, var(--accent-orange));
  box-shadow: 0 6px 18px rgba(255, 159, 64, 0.28);
}
.btn-orange:hover { filter: brightness(1.06); transform: translateY(-1px); }

.btn-sm { padding: 8px 14px; font-size: 13px; }

.btn svg { width: 16px; height: 16px; flex: none; }

/* ==========================================================================
   Upload zone
   ========================================================================== */
.dropzone {
  border: 1.5px dashed var(--border);
  border-radius: var(--radius-md);
  background: rgba(91, 124, 250, 0.03);
  padding: 34px 20px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.25s var(--ease), background 0.25s var(--ease), box-shadow 0.25s var(--ease);
}

.dropzone:hover {
  border-color: var(--accent-blue-dim);
  background: rgba(91, 124, 250, 0.06);
}

.dropzone.is-dragover {
  border-color: var(--accent-blue);
  background: rgba(91, 124, 250, 0.1);
  box-shadow: 0 0 0 4px rgba(91, 124, 250, 0.12);
}

.dropzone-icon {
  width: 38px;
  height: 38px;
  margin: 0 auto 12px;
  color: var(--accent-blue);
  opacity: 0.9;
}

.dropzone p {
  margin: 0 0 4px;
  color: var(--text-primary);
  font-size: 14.5px;
  font-weight: 600;
}

.dropzone span {
  color: var(--text-faint);
  font-size: 12.5px;
}

.file-list {
  margin-top: 14px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.file-chip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  background: var(--surface-alt);
  border: 1px solid var(--border-soft);
  border-radius: 10px;
  padding: 9px 13px;
  font-size: 13px;
  animation: chipIn 0.35s var(--ease);
}

@keyframes chipIn {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}

.file-chip .file-name {
  color: var(--text-primary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.file-chip .file-meta {
  color: var(--text-faint);
  flex: none;
  font-variant-numeric: tabular-nums;
}

.file-chip button {
  background: none;
  border: none;
  color: var(--text-faint);
  cursor: pointer;
  padding: 2px 5px;
  font-size: 15px;
  line-height: 1;
  transition: color 0.2s;
}
.file-chip button:hover { color: var(--danger); }

/* ==========================================================================
   Stats
   ========================================================================== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 4px;
}

@media (max-width: 620px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
}

.stat-tile {
  background: var(--surface-alt);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-md);
  padding: 14px 16px;
  transition: transform 0.3s var(--ease), border-color 0.3s var(--ease);
}

.stat-tile:hover { transform: translateY(-2px); border-color: var(--border); }

.stat-tile .stat-value {
  font-size: 22px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  background: linear-gradient(90deg, #EDF0FB, #B9C4EE);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.stat-tile.stat-missing .stat-value {
  background: linear-gradient(90deg, #FFD9A8, var(--accent-orange));
  -webkit-background-clip: text;
  background-clip: text;
}

.stat-tile .stat-label {
  margin-top: 3px;
  font-size: 12.5px;
  color: var(--text-muted);
}

/* ==========================================================================
   Processing indicator
   ========================================================================== */
.processing-bar {
  display: none;
  align-items: center;
  gap: 12px;
  margin-top: 16px;
  padding: 12px 14px;
  border-radius: 10px;
  background: var(--surface-alt);
  border: 1px solid var(--border-soft);
  font-size: 13.5px;
  color: var(--text-muted);
}

.processing-bar.is-active { display: flex; }

.spinner {
  width: 17px;
  height: 17px;
  border-radius: 50%;
  border: 2px solid var(--border);
  border-top-color: var(--accent-blue);
  flex: none;
  animation: spin 0.75s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ==========================================================================
   Messages / banners
   ========================================================================== */
.messages {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 14px;
}

.msg {
  padding: 11px 14px;
  border-radius: 10px;
  font-size: 13.5px;
  display: flex;
  gap: 10px;
  align-items: flex-start;
  animation: msgIn 0.3s var(--ease);
  border: 1px solid transparent;
}

@keyframes msgIn {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: translateY(0); }
}

.msg-error { background: var(--danger-bg); color: #FFC9C9; border-color: rgba(248, 113, 113, 0.25); }
.msg-warning { background: var(--warning-bg); color: #FDE7A8; border-color: rgba(251, 191, 36, 0.25); }
.msg-success { background: var(--success-bg); color: #B7F5D8; border-color: rgba(52, 211, 153, 0.25); }
.msg-info { background: rgba(91, 124, 250, 0.08); color: #C7D2FB; border-color: rgba(91, 124, 250, 0.22); }

.msg .msg-icon { flex: none; margin-top: 1px; }

/* ==========================================================================
   Results table
   ========================================================================== */
.results-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 14px;
}

.results-toolbar .actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.table-scroll {
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-md);
  overflow: hidden;
  max-height: 420px;
  overflow-y: auto;
}

table.results-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13.5px;
}

.results-table thead th {
  position: sticky;
  top: 0;
  background: #101828;
  color: var(--text-muted);
  text-align: left;
  font-weight: 600;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border-soft);
  font-size: 12.5px;
  z-index: 1;
}

.results-table td {
  padding: 8px 14px;
  border-bottom: 1px solid var(--border-soft);
  color: var(--text-primary);
  font-variant-numeric: tabular-nums;
}

.results-table tbody tr {
  animation: rowIn 0.25s var(--ease) both;
  transition: background 0.15s;
}

.results-table tbody tr:hover { background: rgba(91, 124, 250, 0.05); }

@keyframes rowIn {
  from { opacity: 0; transform: translateY(3px); }
  to { opacity: 1; transform: translateY(0); }
}

.results-table td.col-pos { color: var(--text-faint); width: 60px; }
.results-table td.col-fee.is-blank { color: var(--text-faint); }
.results-table td.col-fee.is-negative { color: #FF9F9F; }
.results-table td.col-fee.is-positive { color: var(--success); }

.blank-tag {
  font-size: 11px;
  color: var(--text-faint);
  border: 1px dashed var(--border);
  border-radius: 5px;
  padding: 1px 6px;
}

.empty-state {
  text-align: center;
  padding: 34px 20px;
  color: var(--text-faint);
  font-size: 14px;
}

/* ==========================================================================
   Clipboard fallback
   ========================================================================== */
.fallback-box {
  display: none;
  margin-top: 14px;
}
.fallback-box.is-active { display: block; }

.fallback-box textarea {
  width: 100%;
  min-height: 130px;
  background: #0C1224;
  border: 1px solid var(--accent-orange-dim);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  padding: 12px 14px;
  font-family: "SFMono-Regular", Consolas, Menlo, monospace;
  font-size: 13px;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  text-align: center;
  color: var(--text-faint);
  font-size: 12.5px;
  margin-top: 46px;
  padding-top: 20px;
  border-top: 1px solid var(--border-soft);
}

.site-footer strong { color: var(--text-muted); }

/* Visually hidden utility */
.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}