/* ==========================================================================
   ROOT VARIABLES / THEME (Dark Mode)
   ========================================================================== */
:root {
  --bg: #0f1115;
  --bg-elevated: #171a21;
  --bg-elevated-2: #1f232c;
  --border: #2a2f3a;
  --text: #e6e8ec;
  --text-muted: #8b919e;
  --accent: #6c8cff;
  --accent-hover: #84a0ff;
  --success: #3ddc84;
  --warn: #ffb454;
  --danger: #ff6b6b;
  --invalid: #ff9f43;
  --radius: 10px;
  --radius-sm: 6px;
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.35);
  --transition: 0.18s ease;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  -webkit-font-smoothing: antialiased;
}

::selection { background: var(--accent); color: #fff; }

/* Scrollbar */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: #3a4050; }

/* ==========================================================================
   LAYOUT
   ========================================================================== */
.app {
  max-width: 1280px;
  margin: 0 auto;
  padding: 20px 24px 60px;
}

.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 4px 20px;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--accent);
}

.header-left h1 {
  font-size: 1.4rem;
  margin: 0;
  color: var(--text);
  letter-spacing: -0.02em;
}

.main-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 18px;
  align-items: start;
}

@media (max-width: 920px) {
  .main-grid { grid-template-columns: 1fr; }
}

.app-footer {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.78rem;
  margin-top: 28px;
}

/* ==========================================================================
   PANEL
   ========================================================================== */
.panel {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  margin-bottom: 18px;
  box-shadow: var(--shadow);
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
  flex-wrap: wrap;
  gap: 8px;
}

.panel-header h2 {
  font-size: 1rem;
  margin: 0;
  color: var(--text);
  font-weight: 600;
}

.panel-actions {
  display: flex;
  gap: 8px;
}

/* ==========================================================================
   BUTTONS
   ========================================================================== */
button, .file-btn {
  font-family: inherit;
  font-size: 0.85rem;
  cursor: pointer;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  transition: background var(--transition), border-color var(--transition), opacity var(--transition), transform var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}

button:active { transform: scale(0.97); }
button:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  transform: none;
}

.icon-btn {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
  padding: 8px;
  border-radius: 50%;
}
.icon-btn:hover { color: var(--text); border-color: var(--accent); }

.primary-btn {
  background: var(--accent);
  color: #0b0d12;
  font-weight: 600;
  padding: 10px 16px;
}
.primary-btn:hover:not(:disabled) { background: var(--accent-hover); }

.warn-btn {
  background: var(--bg-elevated-2);
  color: var(--warn);
  border: 1px solid var(--border);
  padding: 10px 14px;
}
.warn-btn:hover:not(:disabled) { border-color: var(--warn); }

.danger-btn {
  background: var(--bg-elevated-2);
  color: var(--danger);
  border: 1px solid var(--border);
  padding: 10px 14px;
}
.danger-btn:hover:not(:disabled) { border-color: var(--danger); }

.ghost-btn {
  background: var(--bg-elevated-2);
  color: var(--text);
  border: 1px solid var(--border);
  padding: 10px 14px;
}
.ghost-btn:hover:not(:disabled) { border-color: var(--accent); color: var(--accent); }
.ghost-btn.small { padding: 6px 10px; font-size: 0.78rem; }
.ghost-btn.full { width: 100%; justify-content: center; }

.file-btn {
  background: var(--bg-elevated-2);
  color: var(--text);
  border: 1px solid var(--border);
  padding: 8px 12px;
  font-size: 0.8rem;
}
.file-btn:hover { border-color: var(--accent); color: var(--accent); }

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}
.button-row > button { flex: 1 1 auto; justify-content: center; }

/* ==========================================================================
   INPUT PANEL
   ========================================================================== */
.drop-zone {
  position: relative;
}

#urlInput {
  width: 100%;
  min-height: 260px;
  resize: vertical;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  padding: 12px;
  font-family: "SF Mono", "Fira Code", Consolas, monospace;
  font-size: 0.85rem;
  line-height: 1.5;
  outline: none;
  transition: border-color var(--transition);
}
#urlInput:focus { border-color: var(--accent); }

.drop-overlay {
  position: absolute;
  inset: 0;
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: rgba(108, 140, 255, 0.12);
  border: 2px dashed var(--accent);
  border-radius: var(--radius-sm);
  color: var(--accent);
  font-weight: 600;
  pointer-events: none;
}

.drop-zone.dragging .drop-overlay { display: flex; }

.search-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 12px;
  padding: 8px 10px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
}
.search-row input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text);
  font-size: 0.85rem;
}

.stats-row {
  display: flex;
  gap: 8px;
  margin-top: 12px;
  flex-wrap: wrap;
}

.stat-chip {
  background: var(--bg-elevated-2);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 6px 12px;
  font-size: 0.78rem;
  color: var(--text-muted);
}
.stat-chip strong { color: var(--text); margin-right: 4px; }
.stat-chip.valid strong { color: var(--success); }
.stat-chip.invalid strong { color: var(--invalid); }
.stat-chip.total strong { color: var(--accent); }

.quick-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

/* ==========================================================================
   SETTINGS PANEL
   ========================================================================== */
.setting-group {
  margin-bottom: 16px;
}
.setting-group label {
  display: block;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 6px;
}

input[type="range"] {
  width: 100%;
  accent-color: var(--accent);
  height: 4px;
  cursor: pointer;
}

.range-value {
  display: inline-block;
  margin-top: 4px;
  font-size: 0.78rem;
  color: var(--accent);
  font-weight: 600;
}

select {
  width: 100%;
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 9px 10px;
  font-size: 0.85rem;
  outline: none;
  cursor: pointer;
}
select:focus { border-color: var(--accent); }

.checkbox-group {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 4px;
  padding: 12px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}

@media (max-width: 480px) {
  .checkbox-group { grid-template-columns: 1fr; }
}

.checkbox-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.82rem;
  color: var(--text);
  cursor: pointer;
}
.checkbox-item input[type="checkbox"] {
  accent-color: var(--accent);
  width: 16px;
  height: 16px;
  cursor: pointer;
}

/* ==========================================================================
   PROGRESS SECTION
   ========================================================================== */
.progress-section {
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.progress-bar-track {
  width: 100%;
  height: 10px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 20px;
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--accent), var(--success));
  transition: width 0.3s ease;
  border-radius: 20px;
}

.progress-info {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 8px;
  margin-top: 12px;
}

@media (max-width: 600px) {
  .progress-info { grid-template-columns: repeat(2, 1fr); }
}

.progress-stat {
  text-align: center;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 8px 4px;
}
.progress-stat span {
  display: block;
  font-size: 0.7rem;
  color: var(--text-muted);
  margin-bottom: 2px;
}
.progress-stat strong {
  font-size: 1rem;
  color: var(--text);
}

.status-text {
  margin: 12px 0 0;
  font-size: 0.82rem;
  color: var(--text-muted);
  text-align: center;
}

/* ==========================================================================
   LOG PANEL
   ========================================================================== */
.log-list {
  max-height: 320px;
  overflow-y: auto;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 8px;
}

.log-empty {
  color: var(--text-muted);
  font-size: 0.85rem;
  text-align: center;
  padding: 24px 0;
  margin: 0;
}

.log-entry {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  border-bottom: 1px solid var(--border);
}
.log-entry:last-child { border-bottom: none; }

.log-time {
  color: var(--text-muted);
  font-family: "SF Mono", Consolas, monospace;
  font-size: 0.72rem;
  flex-shrink: 0;
  width: 76px;
}

.log-url {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--text);
}

.log-status {
  flex-shrink: 0;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 12px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}
.log-status.success { background: rgba(61, 220, 132, 0.15); color: var(--success); }
.log-status.failed { background: rgba(255, 107, 107, 0.15); color: var(--danger); }
.log-status.invalid { background: rgba(255, 159, 67, 0.15); color: var(--invalid); }
.log-status.skipped { background: rgba(139, 145, 158, 0.15); color: var(--text-muted); }

/* ==========================================================================
   NOTICE BANNER
   ========================================================================== */
.notice {
  display: flex;
  align-items: center;
  gap: 10px;
  background: rgba(255, 180, 84, 0.12);
  border: 1px solid var(--warn);
  color: var(--warn);
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  margin-bottom: 16px;
}
.notice span { flex: 1; }
.notice-close {
  background: transparent;
  border: none;
  color: var(--warn);
  font-size: 1.1rem;
  cursor: pointer;
  line-height: 1;
}
.hidden { display: none !important; }

/* ==========================================================================
   MODAL
   ========================================================================== */
.modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 20px;
}

.modal-box {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  width: 100%;
  max-width: 560px;
  max-height: 80vh;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 18px;
  border-bottom: 1px solid var(--border);
}
.modal-header h3 { margin: 0; font-size: 1rem; }

.modal-close {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 1.3rem;
  cursor: pointer;
  line-height: 1;
}
.modal-close:hover { color: var(--text); }

.modal-body {
  padding: 16px 18px;
  overflow-y: auto;
  font-size: 0.85rem;
  color: var(--text);
  line-height: 1.6;
}
.modal-body code {
  background: var(--bg-elevated-2);
  padding: 2px 6px;
  border-radius: 4px;
  font-family: "SF Mono", Consolas, monospace;
  font-size: 0.8rem;
}
.modal-body .preview-row {
  display: flex;
  gap: 8px;
  padding: 6px 0;
  border-bottom: 1px solid var(--border);
  align-items: center;
  font-size: 0.8rem;
}
.modal-body .preview-row:last-child { border-bottom: none; }
.modal-body .preview-row .idx { color: var(--text-muted); width: 28px; flex-shrink: 0; }
.modal-body .preview-row .url { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.modal-body .preview-row .badge {
  font-size: 0.65rem;
  padding: 2px 6px;
  border-radius: 10px;
  flex-shrink: 0;
  font-weight: 700;
}
.modal-body .preview-row .badge.ok { background: rgba(61,220,132,0.15); color: var(--success); }
.modal-body .preview-row .badge.bad { background: rgba(255,159,67,0.15); color: var(--invalid); }

/* ==========================================================================
   TOAST
   ========================================================================== */
.toast-container {
  position: fixed;
  bottom: 20px;
  right: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  z-index: 1100;
}

.toast {
  background: var(--bg-elevated-2);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  color: var(--text);
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  box-shadow: var(--shadow);
  animation: slideIn 0.25s ease;
  max-width: 320px;
}
.toast.success { border-left-color: var(--success); }
.toast.error { border-left-color: var(--danger); }
.toast.warn { border-left-color: var(--warn); }

@keyframes slideIn {
  from { transform: translateX(20px); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

/* Responsive tweaks */
@media (max-width: 600px) {
  .app { padding: 14px 12px 40px; }
  .header-left h1 { font-size: 1.1rem; }
  .button-row > button { flex: 1 1 100%; }
}