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

:root {
  --bg: #080b14;
  --surface: rgba(255,255,255,0.04);
  --surface-hover: rgba(255,255,255,0.07);
  --border: rgba(255,255,255,0.08);
  --border-active: rgba(99,179,237,0.4);
  --text: #e2e8f0;
  --text-muted: #718096;
  --text-dim: #4a5568;
  --accent: #63b3ed;
  --accent-glow: rgba(99,179,237,0.2);
  --green: #48bb78;
  --green-bg: rgba(72,187,120,0.1);
  --green-border: rgba(72,187,120,0.3);
  --red: #fc8181;
  --red-bg: rgba(252,129,129,0.1);
  --red-border: rgba(252,129,129,0.3);
  --orange: #f6ad55;
  --orange-bg: rgba(246,173,85,0.1);
  --orange-border: rgba(246,173,85,0.3);
  --blue: #76e4f7;
  --blue-bg: rgba(118,228,247,0.1);
  --radius: 14px;
  --radius-sm: 8px;
}

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

/* Animated background */
.bg-grid {
  position: fixed; inset: 0; z-index: 0;
  background-image:
    linear-gradient(rgba(99,179,237,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(99,179,237,0.03) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}

.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: drift 20s ease-in-out infinite;
}
.orb-1 { width: 500px; height: 500px; background: radial-gradient(circle, #4299e1, transparent); top: -100px; left: -100px; animation-delay: 0s; }
.orb-2 { width: 400px; height: 400px; background: radial-gradient(circle, #805ad5, transparent); bottom: -100px; right: -50px; animation-delay: -7s; }
.orb-3 { width: 300px; height: 300px; background: radial-gradient(circle, #38b2ac, transparent); top: 40%; left: 40%; animation-delay: -14s; }

@keyframes drift {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(30px, -30px) scale(1.05); }
  66% { transform: translate(-20px, 20px) scale(0.95); }
}

.container { position: relative; z-index: 1; max-width: 1200px; margin: 0 auto; padding: 24px 20px; }

/* Header */
.header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 28px; padding: 16px 24px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  backdrop-filter: blur(20px);
}
.logo { display: flex; align-items: center; gap: 14px; }
.logo-icon {
  width: 44px; height: 44px; border-radius: 12px;
  background: linear-gradient(135deg, #4299e1, #805ad5);
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 0 20px rgba(66,153,225,0.4);
  animation: pulse-logo 3s ease-in-out infinite;
}
.logo-icon svg { width: 22px; height: 22px; color: white; }
@keyframes pulse-logo {
  0%, 100% { box-shadow: 0 0 20px rgba(66,153,225,0.4); }
  50% { box-shadow: 0 0 35px rgba(66,153,225,0.7); }
}
.logo-text { display: flex; align-items: baseline; gap: 8px; }
.logo-text h1 { font-size: 22px; font-weight: 800; color: #fff; letter-spacing: -0.5px; }
.logo-text h1 span { color: var(--accent); }
.logo-badge {
  font-size: 10px; font-weight: 700; padding: 2px 8px;
  background: linear-gradient(135deg, #4299e1, #805ad5);
  border-radius: 20px; color: white; letter-spacing: 1px;
}

.header-stats { display: flex; align-items: center; gap: 10px; }
.stat-pill {
  display: flex; align-items: center; gap: 7px;
  padding: 6px 14px; border-radius: 20px; font-size: 13px; font-weight: 600;
  border: 1px solid transparent; transition: all 0.3s;
}
.stat-pill .dot { width: 7px; height: 7px; border-radius: 50%; animation: blink 1.5s ease-in-out infinite; }
.stat-pill.valid { background: var(--green-bg); border-color: var(--green-border); color: var(--green); }
.stat-pill.valid .dot { background: var(--green); }
.stat-pill.invalid { background: var(--red-bg); border-color: var(--red-border); color: var(--red); }
.stat-pill.invalid .dot { background: var(--red); animation-delay: 0.5s; }
.stat-pill.error { background: var(--orange-bg); border-color: var(--orange-border); color: var(--orange); }
.stat-pill.error .dot { background: var(--orange); animation-delay: 1s; }
@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: 0.3; } }

/* Mode Tabs */
.mode-tabs {
  display: flex; gap: 8px; margin-bottom: 20px;
  background: var(--surface); padding: 6px;
  border-radius: 12px; border: 1px solid var(--border);
  backdrop-filter: blur(20px);
}
.mode-tab {
  flex: 1; display: flex; align-items: center; justify-content: center; gap: 8px;
  padding: 10px 16px; border-radius: 8px; border: 1px solid transparent;
  background: transparent; color: var(--text-muted); cursor: pointer;
  font-size: 14px; font-weight: 600; font-family: inherit; transition: all 0.3s;
}
.mode-tab:hover { background: rgba(255,255,255,0.05); color: var(--text); }
.mode-tab.active {
  background: rgba(99,179,237,0.15); border-color: rgba(99,179,237,0.3); color: var(--accent);
  box-shadow: 0 4px 12px rgba(99,179,237,0.1);
}

/* Panels */
.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  backdrop-filter: blur(20px);
  margin-bottom: 20px;
  overflow: hidden;
  transition: border-color 0.3s;
}
.panel:hover { border-color: rgba(255,255,255,0.12); }
.panel-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
}
.panel-title {
  display: flex; align-items: center; gap: 8px;
  font-size: 14px; font-weight: 600; color: var(--text); letter-spacing: 0.3px;
}
.panel-actions { display: flex; align-items: center; gap: 8px; }

.format-hint {
  display: flex; align-items: center; gap: 7px;
  padding: 10px 20px;
  background: rgba(99,179,237,0.05);
  border-bottom: 1px solid var(--border);
  font-size: 12px; color: var(--text-muted);
}
.format-hint code {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px; color: var(--accent);
  background: rgba(99,179,237,0.1);
  padding: 1px 6px; border-radius: 4px;
}

.textarea-wrapper { position: relative; }
textarea {
  width: 100%; min-height: 220px; max-height: 350px;
  background: transparent;
  border: none; outline: none; resize: vertical;
  color: var(--text);
  font-family: 'JetBrains Mono', monospace;
  font-size: 12.5px; line-height: 1.8;
  padding: 16px 20px 40px;
  caret-color: var(--accent);
}
textarea::placeholder { color: var(--text-dim); }
.textarea-overlay {
  position: absolute; bottom: 10px; right: 14px;
  font-size: 11px; color: var(--text-dim);
  pointer-events: none;
}

/* Settings */
.settings-row {
  display: flex; align-items: center; gap: 24px; flex-wrap: wrap;
  padding: 14px 20px;
  border-top: 1px solid var(--border);
  background: rgba(0,0,0,0.2);
}
.setting-group { display: flex; align-items: center; gap: 10px; }
.setting-group label {
  display: flex; align-items: center; gap: 5px;
  font-size: 12px; color: var(--text-muted); white-space: nowrap;
}
.slider-wrapper { display: flex; align-items: center; gap: 8px; }
input[type="range"] {
  -webkit-appearance: none; width: 100px; height: 4px;
  background: rgba(255,255,255,0.1); border-radius: 2px; outline: none;
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none; width: 14px; height: 14px; border-radius: 50%;
  background: var(--accent); cursor: pointer;
  box-shadow: 0 0 8px rgba(99,179,237,0.5);
  transition: transform 0.2s;
}
input[type="range"]::-webkit-slider-thumb:hover { transform: scale(1.2); }
.slider-value {
  font-size: 13px; font-weight: 600; color: var(--accent);
  min-width: 20px; text-align: center;
}
.count-badge {
  font-size: 13px; font-weight: 700;
  color: var(--accent); background: var(--accent-glow);
  padding: 2px 10px; border-radius: 20px;
  border: 1px solid rgba(99,179,237,0.3);
}
.ml-auto { margin-left: auto; }

/* Toggle */
.toggle-label { display: flex; align-items: center; gap: 8px; font-size: 12px; color: var(--text-muted); cursor: pointer; }
.toggle { position: relative; width: 36px; height: 20px; }
.toggle input { opacity: 0; width: 0; height: 0; }
.toggle-slider {
  position: absolute; cursor: pointer; inset: 0;
  background: rgba(255,255,255,0.1); border-radius: 20px; transition: 0.3s;
}
.toggle-slider::before {
  content: ''; position: absolute; width: 14px; height: 14px; border-radius: 50%;
  background: var(--text-muted); bottom: 3px; left: 3px; transition: 0.3s;
}
.toggle input:checked + .toggle-slider { background: rgba(99,179,237,0.3); }
.toggle input:checked + .toggle-slider::before { transform: translateX(16px); background: var(--accent); box-shadow: 0 0 8px var(--accent); }

/* Action buttons */
.action-row { padding: 16px 20px; display: flex; gap: 12px; border-top: 1px solid var(--border); }
.btn-primary {
  display: flex; align-items: center; gap: 8px;
  padding: 12px 28px; border-radius: 10px; border: none; cursor: pointer;
  font-size: 14px; font-weight: 600; font-family: inherit;
  background: linear-gradient(135deg, #4299e1, #805ad5);
  color: white; transition: all 0.3s;
  box-shadow: 0 4px 20px rgba(66,153,225,0.3);
}
.btn-primary:hover:not(:disabled) { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(66,153,225,0.5); }
.btn-primary:disabled { opacity: 0.4; cursor: not-allowed; transform: none; }
.btn-danger {
  display: flex; align-items: center; gap: 8px;
  padding: 12px 28px; border-radius: 10px; border: 1px solid var(--red-border); cursor: pointer;
  font-size: 14px; font-weight: 600; font-family: inherit;
  background: var(--red-bg); color: var(--red); transition: all 0.3s;
}
.btn-danger:hover { background: rgba(252,129,129,0.2); transform: translateY(-1px); }
.btn-ghost {
  display: flex; align-items: center; gap: 6px;
  padding: 7px 14px; border-radius: var(--radius-sm); border: 1px solid var(--border);
  background: transparent; color: var(--text-muted); cursor: pointer;
  font-size: 12px; font-weight: 500; font-family: inherit; transition: all 0.2s;
}
.btn-ghost:hover { background: var(--surface-hover); color: var(--text); border-color: rgba(255,255,255,0.15); }
.btn-sm { padding: 5px 12px; font-size: 12px; }

/* Progress */
.progress-panel {}
.progress-label { font-size: 13px; color: var(--text-muted); font-variant-numeric: tabular-nums; }
.progress-bar-container { display: flex; align-items: center; gap: 12px; padding: 0 20px 16px; }
.progress-bar { flex: 1; height: 8px; background: rgba(255,255,255,0.06); border-radius: 20px; overflow: hidden; position: relative; }
.progress-fill { height: 100%; background: linear-gradient(90deg, #4299e1, #805ad5); border-radius: 20px; transition: width 0.4s ease; position: relative; z-index: 1; }
.progress-glow { position: absolute; top: 0; left: 0; height: 100%; background: linear-gradient(90deg, rgba(99,179,237,0.4), rgba(128,90,213,0.4)); border-radius: 20px; filter: blur(6px); transition: width 0.4s ease; }
.progress-pct { font-size: 13px; font-weight: 700; color: var(--accent); min-width: 38px; text-align: right; font-variant-numeric: tabular-nums; }

/* Stats grid */
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; padding: 0 20px 16px; }
.stat-card {
  display: flex; align-items: center; gap: 14px;
  padding: 14px 16px; border-radius: 10px; border: 1px solid var(--border);
  background: rgba(0,0,0,0.2); transition: all 0.3s;
}
.stat-card:hover { transform: translateY(-2px); }
.stat-icon { font-size: 20px; width: 36px; height: 36px; border-radius: 8px; display: flex; align-items: center; justify-content: center; font-weight: 700; flex-shrink: 0; }
.stat-card.valid { border-color: var(--green-border); }
.stat-card.valid .stat-icon { background: var(--green-bg); color: var(--green); }
.stat-card.invalid { border-color: var(--red-border); }
.stat-card.invalid .stat-icon { background: var(--red-bg); color: var(--red); }
.stat-card.error { border-color: var(--orange-border); }
.stat-card.error .stat-icon { background: var(--orange-bg); color: var(--orange); }
.stat-card.speed { border-color: rgba(118,228,247,0.3); }
.stat-card.speed .stat-icon { background: var(--blue-bg); color: var(--blue); }
.stat-num { font-size: 24px; font-weight: 800; line-height: 1; font-variant-numeric: tabular-nums; }
.stat-card.valid .stat-num { color: var(--green); }
.stat-card.invalid .stat-num { color: var(--red); }
.stat-card.error .stat-num { color: var(--orange); }
.stat-card.speed .stat-num { color: var(--blue); }
.stat-label { font-size: 11px; color: var(--text-muted); margin-top: 2px; text-transform: uppercase; letter-spacing: 0.5px; }

/* Filter tabs */
.filter-tabs {
  display: flex; align-items: center; gap: 4px;
  padding: 0 20px 14px; flex-wrap: wrap;
}
.tab {
  display: flex; align-items: center; gap: 7px;
  padding: 7px 16px; border-radius: 8px; border: 1px solid transparent;
  background: transparent; color: var(--text-muted); cursor: pointer;
  font-size: 13px; font-weight: 500; font-family: inherit; transition: all 0.2s;
}
.tab:hover { background: var(--surface-hover); color: var(--text); }
.tab.active { background: rgba(99,179,237,0.1); border-color: rgba(99,179,237,0.3); color: var(--accent); }
.tab-count {
  font-size: 11px; padding: 1px 7px; border-radius: 10px;
  background: rgba(255,255,255,0.08); color: var(--text-muted); font-weight: 600;
}
.tab.active .tab-count { background: rgba(99,179,237,0.2); color: var(--accent); }
.tab-spacer { flex: 1; }

/* Results table */
.results-container {
  max-height: 420px; overflow-y: auto;
  border-top: 1px solid var(--border);
}
.results-container::-webkit-scrollbar { width: 5px; }
.results-container::-webkit-scrollbar-track { background: transparent; }
.results-container::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.1); border-radius: 3px; }
.results-table { width: 100%; border-collapse: collapse; font-size: 12.5px; }
.results-table th {
  text-align: left; padding: 10px 14px;
  color: var(--text-dim); font-size: 11px; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.7px;
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; background: rgba(8,11,20,0.95); z-index: 2;
  backdrop-filter: blur(10px);
}
.results-table td { padding: 10px 14px; border-bottom: 1px solid rgba(255,255,255,0.03); font-family: 'JetBrains Mono', monospace; }
.results-table tr:hover td { background: var(--surface-hover); }
.results-table tr.new-row td { animation: slideIn 0.3s ease; }
@keyframes slideIn { from { opacity: 0; transform: translateX(-10px); } to { opacity: 1; transform: translateX(0); } }

.status-badge {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 3px 10px; border-radius: 20px; font-size: 11px; font-weight: 600;
  font-family: 'Inter', sans-serif;
}
.status-badge.valid { background: var(--green-bg); color: var(--green); border: 1px solid var(--green-border); }
.status-badge.invalid { background: var(--red-bg); color: var(--red); border: 1px solid var(--red-border); }
.status-badge.error { background: var(--orange-bg); color: var(--orange); border: 1px solid var(--orange-border); }
.time-badge { font-size: 11px; color: var(--text-dim); }

.empty-state {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  padding: 60px 20px; gap: 10px; color: var(--text-dim);
}
.empty-icon { font-size: 36px; opacity: 0.5; }

/* Modal */
.modal-overlay {
  position: fixed; inset: 0; z-index: 100;
  background: rgba(0,0,0,0.7); backdrop-filter: blur(6px);
  display: flex; align-items: center; justify-content: center;
}
.modal {
  background: #0f1624; border: 1px solid var(--border);
  border-radius: var(--radius); width: 480px; max-width: 90vw;
  box-shadow: 0 20px 60px rgba(0,0,0,0.5);
  animation: modalIn 0.3s ease;
}
@keyframes modalIn { from { opacity: 0; transform: scale(0.9) translateY(-20px); } to { opacity: 1; transform: scale(1) translateY(0); } }
.modal-header { display: flex; align-items: center; justify-content: space-between; padding: 20px 24px; border-bottom: 1px solid var(--border); }
.modal-header h3 { font-size: 16px; font-weight: 700; }
.modal-close { background: none; border: none; color: var(--text-muted); font-size: 22px; cursor: pointer; line-height: 1; transition: color 0.2s; }
.modal-close:hover { color: var(--text); }
.modal-body { padding: 24px; }
.modal-body p { font-size: 13px; color: var(--text-muted); margin-bottom: 16px; }
.export-options { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.export-btn {
  display: flex; align-items: center; gap: 10px;
  padding: 14px 16px; border-radius: 10px; border: 1px solid var(--border);
  background: var(--surface); color: var(--text); cursor: pointer;
  font-family: inherit; font-size: 13px; font-weight: 500;
  transition: all 0.2s; text-align: left;
}
.export-btn:hover { background: var(--surface-hover); border-color: rgba(255,255,255,0.15); transform: translateY(-1px); }
.export-btn.valid:hover { border-color: var(--green-border); background: var(--green-bg); color: var(--green); }
.export-btn.invalid:hover { border-color: var(--red-border); background: var(--red-bg); color: var(--red); }
.export-btn.error:hover { border-color: var(--orange-border); background: var(--orange-bg); color: var(--orange); }
.export-icon { font-size: 18px; }
.export-count { margin-left: auto; font-size: 12px; color: var(--text-muted); background: rgba(255,255,255,0.06); padding: 2px 8px; border-radius: 10px; }

/* Upload button */
.btn-upload { color: var(--accent); border-color: rgba(99,179,237,0.3); background: rgba(99,179,237,0.05); }
.btn-upload:hover { background: rgba(99,179,237,0.12) !important; border-color: rgba(99,179,237,0.5) !important; color: var(--accent) !important; }

/* Drop zone */
.drop-zone {
  margin: 0 20px 0;
  border: 2px dashed var(--border);
  border-radius: 10px;
  background: rgba(0,0,0,0.15);
  cursor: pointer;
  transition: all 0.25s ease;
  position: relative;
  overflow: hidden;
}
.drop-zone::before {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(66,153,225,0.04), rgba(128,90,213,0.04));
  opacity: 0; transition: opacity 0.25s;
}
.drop-zone:hover, .drop-zone.drag-over {
  border-color: rgba(99,179,237,0.5);
  background: rgba(99,179,237,0.04);
}
.drop-zone:hover::before, .drop-zone.drag-over::before { opacity: 1; }
.drop-zone.drag-over {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(99,179,237,0.15), inset 0 0 30px rgba(99,179,237,0.05);
  transform: scale(1.005);
}
.drop-zone.drop-success {
  border-color: var(--green);
  background: rgba(72,187,120,0.05);
  animation: dropPulse 0.5s ease;
}
@keyframes dropPulse {
  0% { transform: scale(1); }
  40% { transform: scale(1.015); }
  100% { transform: scale(1); }
}
.drop-zone-inner {
  display: flex; align-items: center; gap: 16px;
  padding: 18px 20px;
}
.drop-icon {
  width: 52px; height: 52px; border-radius: 12px; flex-shrink: 0;
  background: rgba(99,179,237,0.08);
  border: 1px solid rgba(99,179,237,0.2);
  display: flex; align-items: center; justify-content: center;
  color: var(--accent);
  transition: all 0.25s;
}
.drop-zone:hover .drop-icon, .drop-zone.drag-over .drop-icon {
  background: rgba(99,179,237,0.15);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(99,179,237,0.2);
}
.drop-zone.drop-success .drop-icon { background: rgba(72,187,120,0.15); border-color: var(--green); color: var(--green); }
.drop-text { display: flex; flex-direction: column; gap: 3px; }
.drop-text strong { font-size: 14px; font-weight: 600; color: var(--text); }
.drop-text span { font-size: 12px; color: var(--text-muted); }
.drop-browse {
  background: none; border: none; padding: 0;
  color: var(--accent); font-size: 12px; font-weight: 600;
  cursor: pointer; text-decoration: underline; font-family: inherit;
  transition: color 0.2s;
}
.drop-browse:hover { color: #90cdf4; }
.drop-hint {
  margin-left: auto; font-size: 11px; color: var(--text-dim); text-align: right; white-space: nowrap;
}
.drop-hint code { font-family: 'JetBrains Mono', monospace; color: var(--accent); font-size: 10.5px; background: rgba(99,179,237,0.08); padding: 1px 5px; border-radius: 3px; }

/* File loaded state */
.drop-zone .file-loaded-info {
  display: flex; align-items: center; gap: 8px;
  font-size: 12px; color: var(--green); font-weight: 600;
}
.drop-zone .file-loaded-info svg { flex-shrink: 0; }

@media (max-width: 768px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .header { flex-direction: column; gap: 14px; }
  .export-options { grid-template-columns: 1fr; }
  .drop-hint { display: none; }
  .drop-zone-inner { flex-wrap: wrap; }
}