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

:root {
  --bg: #0a0b14;
  --bg-card: #12131f;
  --bg-card-2: #1a1b2e;
  --border: rgba(255,255,255,0.08);
  --border-hover: rgba(255,255,255,0.15);
  --accent: #6366f1;
  --accent-2: #8b5cf6;
  --accent-green: #10b981;
  --accent-red: #ef4444;
  --text: #f0f0fa;
  --text-muted: #8888a8;
  --text-faint: #555570;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 20px 60px rgba(0,0,0,0.5);
  --transition: 0.2s ease;
}

html { font-size: 16px; scroll-behavior: smooth; }
body {
  font-family: 'Inter', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.6;
}

/* ===== BACKGROUND ORBS ===== */
.bg-orbs {
  position: fixed; inset: 0; z-index: 0; pointer-events: none; overflow: hidden;
}
.orb {
  position: absolute; border-radius: 50%; filter: blur(80px); opacity: 0.15; animation: float 8s ease-in-out infinite;
}
.orb-1 { width: 600px; height: 600px; background: radial-gradient(circle, #6366f1, transparent); top: -200px; left: -150px; animation-delay: 0s; }
.orb-2 { width: 500px; height: 500px; background: radial-gradient(circle, #8b5cf6, transparent); bottom: -150px; right: -100px; animation-delay: 3s; }
.orb-3 { width: 400px; height: 400px; background: radial-gradient(circle, #10b981, transparent); top: 50%; left: 50%; transform: translate(-50%, -50%); animation-delay: 6s; }
@keyframes float {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-30px) scale(1.05); }
}

/* ===== HEADER ===== */
.header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(10,11,20,0.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 0 2rem;
}
.header-inner {
  max-width: 1280px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  height: 60px;
}
.header-left { display: flex; align-items: center; gap: 12px; }
.developer-tag {
  display: flex; align-items: center; gap: 8px;
  background: linear-gradient(135deg, rgba(99,102,241,0.12), rgba(139,92,246,0.18));
  border: 1px solid rgba(99,102,241,0.35);
  border-radius: 99px;
  padding: 5px 14px;
  font-size: 0.78rem;
  color: var(--text-muted);
  box-shadow: 0 2px 10px rgba(99,102,241,0.1);
  transition: transform 0.2s, box-shadow 0.2s;
}
.developer-tag:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(99,102,241,0.25);
  border-color: rgba(99,102,241,0.6);
}
.developer-tag svg { color: var(--accent); }
.dev-highlight {
  color: #c7d2fe;
  font-weight: 700;
  letter-spacing: 0.04em;
  background: linear-gradient(135deg, #a5b4fc, #c084fc);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* ===== MAIN LAYOUT ===== */
.main {
  position: relative; z-index: 1;
  max-width: 1100px; margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
}

/* ===== STEPS BAR ===== */
.steps-bar {
  display: flex; align-items: center; justify-content: center;
  gap: 0; margin-bottom: 2.5rem; padding: 1.2rem 2rem;
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius);
}
.step {
  display: flex; align-items: center; gap: 10px; cursor: default;
  opacity: 0.4; transition: opacity var(--transition);
}
.step.active { opacity: 1; }
.step.completed { opacity: 0.8; }
.step-num {
  width: 32px; height: 32px; border-radius: 50%;
  background: rgba(99,102,241,0.15); border: 2px solid rgba(99,102,241,0.3);
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 0.85rem; color: var(--accent);
  transition: all var(--transition);
}
.step.active .step-num {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border-color: transparent; color: white;
  box-shadow: 0 0 20px rgba(99,102,241,0.4);
}
.step.completed .step-num {
  background: rgba(16,185,129,0.15);
  border-color: rgba(16,185,129,0.4); color: var(--accent-green);
}
.step-label { font-size: 0.85rem; font-weight: 600; color: var(--text-muted); }
.step.active .step-label { color: var(--text); }
.step-connector {
  flex: 1; height: 1px; background: var(--border); margin: 0 16px; min-width: 30px;
}

/* ===== STEP SECTIONS ===== */
.step-section { display: none; animation: fadeSlide 0.3s ease; }
.step-section.active { display: block; }
@keyframes fadeSlide {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ===== SECTION HEADER ===== */
.section-header { margin-bottom: 2rem; }
.section-header h2 {
  font-family: 'Outfit', sans-serif; font-size: 1.75rem; font-weight: 800;
  background: linear-gradient(135deg, var(--text) 30%, #a5b4fc); -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  margin-bottom: 0.5rem;
}
.section-header p { color: var(--text-muted); font-size: 0.95rem; max-width: 600px; }
.section-header code { background: rgba(99,102,241,0.15); padding: 2px 6px; border-radius: 4px; font-family: monospace; color: #a5b4fc; font-size: 0.85em; }

/* ===== UPLOAD AREA ===== */
.upload-area {
  border: 2px dashed var(--border-hover);
  border-radius: var(--radius);
  background: var(--bg-card);
  padding: 3rem 2rem;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition);
  position: relative;
}
.upload-area:hover, .upload-area.drag-over {
  border-color: var(--accent);
  background: rgba(99,102,241,0.05);
  box-shadow: 0 0 0 4px rgba(99,102,241,0.1);
}
.upload-icon { margin-bottom: 1rem; display: flex; justify-content: center; }
.upload-area h3 { font-size: 1.1rem; font-weight: 600; margin-bottom: 0.5rem; }
.upload-hint { color: var(--text-muted); font-size: 0.9rem; margin-bottom: 0.5rem; }
.upload-formats { color: var(--text-faint); font-size: 0.8rem; }
.link-btn { background: none; border: none; color: var(--accent); cursor: pointer; font-size: inherit; text-decoration: underline; font-weight: 600; }
.link-btn:hover { color: var(--accent-2); }

/* ===== PREVIEW WRAP ===== */
.template-preview-wrap, .data-preview-wrap { margin-top: 1.5rem; }
.preview-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 1rem;
}
.preview-header h3 { font-size: 1rem; font-weight: 700; }

.canvas-container {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  background: #111;
  max-width: 900px;
}
.canvas-container canvas { display: block; width: 100%; height: auto; }

/* ===== DATA TABLE ===== */
.table-scroll {
  overflow-x: auto;
  border-radius: var(--radius);
  border: 1px solid var(--border);
}
.data-table {
  width: 100%; border-collapse: collapse; font-size: 0.85rem;
  background: var(--bg-card);
}
.data-table th {
  background: rgba(99,102,241,0.1); color: #a5b4fc;
  padding: 10px 14px; text-align: left; font-weight: 700; font-size: 0.8rem;
  text-transform: uppercase; letter-spacing: 0.04em;
  border-bottom: 1px solid var(--border);
}
.data-table td {
  padding: 9px 14px; border-bottom: 1px solid var(--border);
  color: var(--text-muted);
}
.data-table tr:last-child td { border-bottom: none; }
.data-table tr:hover td { background: rgba(255,255,255,0.02); color: var(--text); }
.row-count {
  background: rgba(16,185,129,0.15); border: 1px solid rgba(16,185,129,0.3);
  color: var(--accent-green); font-size: 0.75rem; font-weight: 600;
  padding: 2px 8px; border-radius: 20px; margin-left: 8px;
}

/* ===== STEP NAV ===== */
.step-nav {
  display: flex; align-items: center; justify-content: space-between;
  margin-top: 2rem; padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}

/* ===== BUTTONS ===== */
.btn-primary {
  display: inline-flex; align-items: center; gap: 8px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: white; border: none; border-radius: 10px;
  padding: 0.7rem 1.5rem; font-size: 0.9rem; font-weight: 700; cursor: pointer;
  transition: all var(--transition);
  box-shadow: 0 4px 15px rgba(99,102,241,0.3);
}
.btn-primary:hover:not(:disabled) { transform: translateY(-1px); box-shadow: 0 6px 25px rgba(99,102,241,0.5); }
.btn-primary:disabled { opacity: 0.4; cursor: not-allowed; transform: none; }
.btn-primary.btn-large { padding: 0.85rem 2rem; font-size: 1rem; }

.btn-ghost {
  display: inline-flex; align-items: center; gap: 8px;
  background: transparent; color: var(--text-muted);
  border: 1px solid var(--border); border-radius: 10px;
  padding: 0.7rem 1.5rem; font-size: 0.9rem; font-weight: 600; cursor: pointer;
  transition: all var(--transition);
}
.btn-ghost:hover { background: rgba(255,255,255,0.05); color: var(--text); border-color: var(--border-hover); }
.btn-ghost.btn-large { padding: 0.85rem 2rem; font-size: 1rem; }

.btn-danger {
  background: rgba(239,68,68,0.1); color: #f87171; border: 1px solid rgba(239,68,68,0.2);
  border-radius: 8px; padding: 0.5rem 1rem; font-size: 0.85rem; font-weight: 600;
  cursor: pointer; transition: all var(--transition); width: 100%; margin-top: 0.5rem;
}
.btn-danger:hover { background: rgba(239,68,68,0.2); }

.btn-add-field {
  display: inline-flex; align-items: center; gap: 6px;
  background: rgba(99,102,241,0.1); color: var(--accent);
  border: 1px dashed rgba(99,102,241,0.3); border-radius: 8px;
  padding: 0.55rem 1rem; font-size: 0.85rem; font-weight: 600;
  cursor: pointer; transition: all var(--transition); width: 100%; justify-content: center;
  margin-top: 8px;
}
.btn-add-field:hover { background: rgba(99,102,241,0.2); border-style: solid; }

/* ===== MAPPING LAYOUT ===== */
.mapping-layout {
  display: grid; grid-template-columns: 280px 1fr; gap: 1.5rem; margin-bottom: 1.5rem;
}

/* ===== FIELDS PANEL ===== */
.fields-panel {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 1.25rem;
  height: fit-content; position: sticky; top: 80px;
}
.panel-title {
  font-size: 0.75rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.08em; color: var(--text-faint); margin-bottom: 0.75rem;
}
.panel-divider { height: 1px; background: var(--border); margin: 1rem 0; }

#field-list { display: flex; flex-direction: column; gap: 6px; }
.field-item {
  display: flex; align-items: center; justify-content: space-between;
  background: var(--bg-card-2); border: 1px solid var(--border);
  border-radius: 8px; padding: 8px 12px; cursor: pointer;
  transition: all var(--transition);
}
.field-item:hover, .field-item.selected { border-color: var(--accent); background: rgba(99,102,241,0.08); }
.field-item-name { font-size: 0.85rem; font-weight: 500; }
.field-item-col { font-size: 0.75rem; color: var(--text-faint); }

/* ===== FORMAT OPTIONS ===== */
.format-options { display: flex; gap: 8px; }
.format-option { flex: 1; cursor: pointer; }
.format-option input { display: none; }
.format-card {
  display: flex; flex-direction: column; align-items: center; gap: 4px;
  border: 1px solid var(--border); border-radius: 8px;
  padding: 10px 6px; transition: all var(--transition);
  font-size: 0.75rem; font-weight: 600; color: var(--text-muted);
  background: var(--bg-card-2);
}
.format-option input:checked + .format-card {
  border-color: var(--accent); background: rgba(99,102,241,0.12);
  color: var(--accent);
  box-shadow: 0 0 0 3px rgba(99,102,241,0.15);
}

/* ===== CANVAS PANEL ===== */
.canvas-panel {
  display: flex; flex-direction: column; gap: 8px;
}
.canvas-wrapper {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  background: #0e0f1a;
}
.canvas-wrapper canvas { display: block; width: 100%; height: auto; }
#drag-fields-layer {
  position: absolute; inset: 0; pointer-events: none;
}
.drag-field-el {
  position: absolute;
  cursor: grab;
  pointer-events: all;
  user-select: none;
  padding: 3px 6px;
  border: 1.5px dashed rgba(99,102,241,0.6);
  border-radius: 4px;
  background: rgba(10,11,20,0.25);
  backdrop-filter: blur(2px);
  transition: border-color 0.15s, background 0.15s, box-shadow 0.15s;
  white-space: nowrap;
  transform: translate(-50%, -50%);
  line-height: 1.2;
}
.drag-field-el:hover {
  border-color: var(--accent);
  background: rgba(99,102,241,0.12);
}
.drag-field-el.selected-field {
  border-color: var(--accent);
  background: rgba(99,102,241,0.18);
  border-style: solid;
  box-shadow: 0 0 0 3px rgba(99,102,241,0.25), 0 2px 12px rgba(0,0,0,0.3);
}
.drag-field-el:active { cursor: grabbing; }
/* Column badge shown on hover/selected */
.drag-field-el::after {
  content: attr(data-col);
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  font-size: 9px;
  font-family: 'Inter', sans-serif;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #a5b4fc;
  background: rgba(10,11,20,0.85);
  padding: 1px 5px;
  border-radius: 3px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s;
  margin-top: 2px;
  line-height: 1.2;
  white-space: nowrap;
}
.drag-field-el:hover::after,
.drag-field-el.selected-field::after { opacity: 1; }
.canvas-hint { font-size: 0.75rem; color: var(--text-faint); text-align: center; margin-top: 6px; }

/* ===== FIELD EDITOR ===== */
.field-editor {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 1.25rem;
  margin-bottom: 1.5rem; animation: fadeSlide 0.2s ease;
}
.editor-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 1rem; font-weight: 700; font-size: 0.95rem;
}
.editor-close {
  background: none; border: none; color: var(--text-muted); cursor: pointer;
  font-size: 1.1rem; padding: 2px 6px; border-radius: 4px; transition: all var(--transition);
}
.editor-close:hover { color: var(--text); background: rgba(255,255,255,0.05); }
.editor-row {
  display: grid; grid-template-columns: 110px 1fr; gap: 12px;
  align-items: center; margin-bottom: 0.75rem;
}
.editor-row label { font-size: 0.8rem; font-weight: 600; color: var(--text-muted); }

/* ===== INPUTS ===== */
.text-input, .select-input {
  background: var(--bg-card-2); border: 1px solid var(--border);
  color: var(--text); border-radius: 8px; padding: 0.45rem 0.75rem;
  font-size: 0.85rem; font-family: inherit; transition: border-color var(--transition);
  width: 100%;
}
.text-input:focus, .select-input:focus { outline: none; border-color: var(--accent); }
.select-input option { background: var(--bg-card-2); }
.color-input { height: 36px; width: 60px; border-radius: 8px; border: 1px solid var(--border); cursor: pointer; padding: 2px; background: var(--bg-card-2); }

.align-group { display: flex; gap: 6px; }
.align-btn {
  background: var(--bg-card-2); border: 1px solid var(--border);
  color: var(--text-muted); border-radius: 6px; padding: 4px 10px;
  cursor: pointer; font-size: 0.8rem; font-weight: 700; transition: all var(--transition);
}
.align-btn.active { background: rgba(99,102,241,0.15); border-color: var(--accent); color: var(--accent); }

/* ===== PROGRESS ===== */
.progress-section { margin-bottom: 2rem; }
.progress-bar-wrap {
  height: 8px; background: rgba(255,255,255,0.06); border-radius: 99px;
  overflow: hidden; margin-bottom: 10px;
}
.progress-bar {
  height: 100%; width: 0%; background: linear-gradient(90deg, var(--accent), var(--accent-2), #ec4899);
  border-radius: 99px; transition: width 0.3s ease;
  background-size: 200% 100%; animation: shimmer 2s linear infinite;
}
@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}
.progress-stats {
  display: flex; align-items: center; justify-content: space-between;
}
.progress-label { font-size: 0.85rem; color: var(--text-muted); }
.btn-stop {
  display: inline-flex; align-items: center; gap: 6px;
  background: rgba(239,68,68,0.12); color: #f87171;
  border: 1px solid rgba(239,68,68,0.3); border-radius: 8px;
  padding: 0.4rem 0.9rem; font-size: 0.82rem; font-weight: 700;
  cursor: pointer; transition: all var(--transition);
  animation: pulse-border 1.5s ease-in-out infinite;
}
.btn-stop:hover {
  background: rgba(239,68,68,0.25);
  border-color: rgba(239,68,68,0.6);
  transform: scale(1.03);
}
@keyframes pulse-border {
  0%, 100% { box-shadow: 0 0 0 0 rgba(239,68,68,0); }
  50% { box-shadow: 0 0 0 4px rgba(239,68,68,0.15); }
}

/* ===== PREVIEW GRID ===== */
.preview-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1rem; margin-bottom: 2rem;
}
.preview-card {
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  background: var(--bg-card); overflow: hidden;
  animation: popIn 0.25s ease both;
}
@keyframes popIn {
  from { opacity: 0; transform: scale(0.9); }
  to { opacity: 1; transform: scale(1); }
}
.preview-card img { width: 100%; display: block; }
.preview-card-name {
  padding: 8px 10px; font-size: 0.75rem; font-weight: 600;
  color: var(--text-muted); text-align: center;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}

/* ===== DOWNLOAD SECTION ===== */
.download-section {
  text-align: center; padding: 2.5rem; background: var(--bg-card);
  border: 1px solid var(--border); border-radius: var(--radius);
  animation: fadeSlide 0.4s ease;
}
.download-icon { margin-bottom: 1.2rem; display: flex; justify-content: center; }
.download-section h3 { font-family: 'Outfit', sans-serif; font-size: 1.5rem; font-weight: 800; margin-bottom: 0.5rem; }
.download-section p { color: var(--text-muted); margin-bottom: 1.5rem; }
.download-btn-group { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }

/* ===== TOAST ===== */
.toast {
  position: fixed; bottom: 2rem; right: 2rem; z-index: 999;
  background: var(--bg-card-2); border: 1px solid var(--border);
  color: var(--text); padding: 0.75rem 1.25rem; border-radius: 10px;
  font-size: 0.9rem; font-weight: 500;
  box-shadow: var(--shadow); pointer-events: none;
  opacity: 0; transform: translateY(10px);
  transition: opacity 0.3s ease, transform 0.3s ease;
  max-width: 350px;
}
.toast.show { opacity: 1; transform: translateY(0); }
.toast.error { border-color: rgba(239,68,68,0.4); background: rgba(239,68,68,0.1); }
/* ===== FOOTER ===== */
.app-footer {
  position: relative; z-index: 10;
  border-top: 1px solid var(--border);
  background: rgba(10,11,20,0.85);
  backdrop-filter: blur(16px);
  padding: 1.25rem 2rem;
  margin-top: 4rem;
}
.footer-inner {
  max-width: 1100px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 12px;
  font-size: 0.82rem; color: var(--text-muted);
}
.footer-brand { display: flex; align-items: center; gap: 12px; }
.footer-title { font-family: 'Outfit', sans-serif; font-weight: 800; font-size: 1.05rem; background: linear-gradient(135deg, #6366f1, #8b5cf6); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.footer-copy { color: var(--text-faint); }
.footer-credits { font-size: 0.82rem; }

/* ===== HIDDEN ===== */
.hidden { display: none !important; }

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .mapping-layout { grid-template-columns: 1fr; }
  .fields-panel { position: static; }
  .steps-bar { padding: 1rem; gap: 0; }
  .step-label { display: none; }
  .step-connector { min-width: 15px; }
  .main { padding: 1rem 1rem 3rem; }
  .section-header h2 { font-size: 1.35rem; }
  .format-options { flex-direction: column; }
}