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

:root {
  --bg:          #07091c;
  --surface:     #0d1226;
  --surface2:    #111827;
  --border:      rgba(255,255,255,0.07);
  --border-hi:   rgba(255,255,255,0.14);
  --text:        #eef2ff;
  --text-dim:    #94a3c4;
  --text-muted:  #475577;
  --accent:      #4f7cff;
  --accent2:     #8b5cf6;
  --accent-glow: rgba(79,124,255,0.22);
  --success:     #10b981;
  --success-dim: rgba(16,185,129,0.14);
  --error:       #f87171;
  --error-dim:   rgba(248,113,113,0.14);
  --warn:        #fbbf24;
  --warn-dim:    rgba(251,191,36,0.14);
  --purple:      #a78bfa;
  --purple-dim:  rgba(167,139,250,0.14);
  --r:           14px;
  --r-sm:        8px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

html { font-size: 15px; scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  line-height: 1.55;
  min-height: 100vh;
  overflow-x: hidden;
}

/* ── Background decoration ────────────────────────────────── */
.bg-glow {
  position: fixed;
  top: -180px;
  left: 50%;
  transform: translateX(-50%);
  width: 900px;
  height: 500px;
  background: radial-gradient(ellipse at center,
    rgba(79,124,255,0.18) 0%,
    rgba(139,92,246,0.08) 40%,
    transparent 70%);
  pointer-events: none;
  z-index: 0;
}

/* ── Page layout ──────────────────────────────────────────── */
.page {
  position: relative;
  z-index: 1;
  max-width: 740px;
  margin: 0 auto;
  padding: 36px 18px 80px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

/* ── Header ───────────────────────────────────────────────── */
.header {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 4px 0 8px;
}

.logo-mark {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: rgba(255,45,45,0.12);
  border: 1px solid rgba(255,45,45,0.22);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.app-title {
  font-size: 1.45rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  line-height: 1.2;
  color: var(--text);
}

.title-accent {
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.app-sub {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 2px;
}

/* ── Card ─────────────────────────────────────────────────── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 22px;
  display: flex;
  flex-direction: column;
  gap: 18px;
  box-shadow: 0 4px 40px rgba(0,0,0,0.35), 0 1px 0 rgba(255,255,255,0.04) inset;
}

/* ── Form fields ──────────────────────────────────────────── */
.field { display: flex; flex-direction: column; gap: 7px; }

label {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-dim);
  letter-spacing: 0.4px;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 8px;
}

.label-chip {
  font-size: 0.7rem;
  font-weight: 500;
  padding: 1px 7px;
  border-radius: 99px;
  background: rgba(79,124,255,0.15);
  color: var(--accent);
  text-transform: none;
  letter-spacing: 0;
  transition: opacity 0.2s;
}

textarea, input[type="text"] {
  background: rgba(0,0,0,0.3);
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  color: var(--text);
  font-family: var(--font);
  font-size: 0.9rem;
  padding: 11px 14px;
  width: 100%;
  transition: border-color 0.2s, box-shadow 0.2s;
}

textarea {
  resize: vertical;
  min-height: 88px;
  line-height: 1.6;
}

textarea:focus, input[type="text"]:focus {
  outline: none;
  border-color: rgba(79,124,255,0.5);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

textarea::placeholder, input[type="text"]::placeholder { color: var(--text-muted); }

.form-row {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  flex-wrap: wrap;
}

.flex-grow { flex: 1 1 200px; }

/* ── Pill format selector ─────────────────────────────────── */
.pill-group {
  display: flex;
  background: rgba(0,0,0,0.3);
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  padding: 3px;
  gap: 3px;
}

.pill {
  align-items: center;
  background: transparent;
  border: none;
  border-radius: 5px;
  color: var(--text-muted);
  cursor: pointer;
  display: flex;
  font-family: var(--font);
  font-size: 0.84rem;
  font-weight: 600;
  gap: 5px;
  padding: 7px 16px;
  transition: all 0.18s;
}

.pill:hover { color: var(--text); }

.pill.active {
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: #fff;
  box-shadow: 0 2px 12px rgba(79,124,255,0.4);
}

/* ── Directory input ──────────────────────────────────────── */
.dir-wrap {
  position: relative;
  display: flex;
  align-items: center;
}

.dir-prefix-icon {
  position: absolute;
  left: 13px;
  color: var(--text-muted);
  pointer-events: none;
  flex-shrink: 0;
}

.dir-wrap input {
  padding-left: 36px;
  padding-right: 110px;
}

.dir-browse-btn {
  position: absolute;
  right: 5px;
  align-items: center;
  background: rgba(79,124,255,0.12);
  border: 1px solid rgba(79,124,255,0.25);
  border-radius: 5px;
  color: var(--accent);
  cursor: pointer;
  display: flex;
  font-family: var(--font);
  font-size: 0.78rem;
  font-weight: 600;
  gap: 5px;
  padding: 5px 11px;
  transition: all 0.18s;
}

.dir-browse-btn:hover {
  background: rgba(79,124,255,0.22);
  border-color: rgba(79,124,255,0.45);
  color: #fff;
}

/* ── Form footer ──────────────────────────────────────────── */
.form-footer {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.btn-start {
  align-items: center;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent2) 100%);
  border: none;
  border-radius: var(--r-sm);
  box-shadow: 0 4px 18px rgba(79,124,255,0.35);
  color: #fff;
  cursor: pointer;
  display: flex;
  font-family: var(--font);
  font-size: 0.9rem;
  font-weight: 700;
  gap: 8px;
  padding: 11px 24px;
  transition: opacity 0.18s, box-shadow 0.18s, transform 0.12s;
}

.btn-start:hover:not(:disabled) {
  box-shadow: 0 6px 26px rgba(79,124,255,0.5);
  transform: translateY(-1px);
}

.btn-start:active:not(:disabled) { transform: translateY(0); }
.btn-start:disabled { opacity: 0.4; cursor: not-allowed; }

.btn-ghost {
  background: transparent;
  border: 1px solid var(--border-hi);
  border-radius: var(--r-sm);
  color: var(--text-dim);
  cursor: pointer;
  font-family: var(--font);
  font-size: 0.86rem;
  padding: 10px 18px;
  transition: border-color 0.18s, color 0.18s, background 0.18s;
}

.btn-ghost:hover { background: rgba(255,255,255,0.05); color: var(--text); border-color: var(--border-hi); }

.error-pill {
  align-items: center;
  background: var(--error-dim);
  border: 1px solid rgba(248,113,113,0.3);
  border-radius: 99px;
  color: var(--error);
  display: flex;
  font-size: 0.82rem;
  font-weight: 500;
  gap: 6px;
  padding: 7px 14px;
}

/* ── Overall progress card ────────────────────────────────── */
.overall-card { gap: 14px; }

.overall-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.overall-left { display: flex; flex-direction: column; gap: 2px; }
.overall-label { font-size: 0.78rem; font-weight: 600; color: var(--text-dim); text-transform: uppercase; letter-spacing: 0.4px; }
.overall-count { font-size: 0.82rem; color: var(--text-muted); }

.overall-pct {
  font-size: 2.2rem;
  font-weight: 800;
  letter-spacing: -1px;
  font-variant-numeric: tabular-nums;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}

/* ── Progress track ───────────────────────────────────────── */
.prog-track {
  background: rgba(0,0,0,0.4);
  border-radius: 99px;
  height: 6px;
  overflow: hidden;
  position: relative;
}

.prog-fill {
  border-radius: 99px;
  height: 100%;
  transition: width 0.4s cubic-bezier(.4,0,.2,1);
  background: linear-gradient(90deg, var(--accent), var(--accent2));
}

.prog-fill.done  { background: var(--success); }
.prog-fill.fail  { background: var(--error); }
.prog-fill.anim  {
  background: linear-gradient(90deg, var(--accent) 0%, var(--accent2) 50%, var(--accent) 100%);
  background-size: 200% 100%;
  animation: shimmer 1.8s linear infinite;
}

@keyframes shimmer {
  0%   { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ── Summary ──────────────────────────────────────────────── */
.summary {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.83rem;
  font-weight: 500;
  padding: 10px 14px;
  border-radius: var(--r-sm);
}

.summary.ok     { background: var(--success-dim); color: #6ee7b7; border: 1px solid rgba(16,185,129,0.2); }
.summary.partial{ background: var(--warn-dim);    color: #fde68a; border: 1px solid rgba(251,191,36,0.2); }
.summary.fail   { background: var(--error-dim);   color: #fca5a5; border: 1px solid rgba(248,113,113,0.2); }

/* ── Track list ───────────────────────────────────────────── */
#track-list { display: flex; flex-direction: column; gap: 8px; }

.track {
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 3px solid transparent;
  border-radius: var(--r);
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: border-color 0.25s;
}

.track.s-pending    { border-left-color: var(--border-hi); }
.track.s-searching  { border-left-color: var(--warn); }
.track.s-downloading{ border-left-color: var(--accent); }
.track.s-converting { border-left-color: var(--purple); }
.track.s-done       { border-left-color: var(--success); }
.track.s-error      { border-left-color: var(--error); }

.track-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.track-left {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.track-num {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border-hi);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--text-muted);
  transition: all 0.2s;
}

.track.s-done .track-num      { background: var(--success-dim); border-color: rgba(16,185,129,0.3); color: var(--success); }
.track.s-error .track-num     { background: var(--error-dim);   border-color: rgba(248,113,113,0.3); color: var(--error); }
.track.s-searching .track-num { background: var(--warn-dim);    border-color: rgba(251,191,36,0.3); color: var(--warn); }
.track.s-downloading .track-num{ background: var(--accent-glow); border-color: rgba(79,124,255,0.3); color: var(--accent); }
.track.s-converting .track-num { background: var(--purple-dim); border-color: rgba(167,139,250,0.3); color: var(--purple); }

.track-name {
  font-size: 0.9rem;
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  color: var(--text);
}

.track-right {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.track-badge {
  font-size: 0.72rem;
  font-weight: 600;
  padding: 3px 9px;
  border-radius: 99px;
  letter-spacing: 0.2px;
}

.track.s-pending .track-badge    { background: rgba(255,255,255,0.05); color: var(--text-muted); }
.track.s-searching .track-badge  { background: var(--warn-dim);    color: var(--warn);   border: 1px solid rgba(251,191,36,0.2); }
.track.s-downloading .track-badge{ background: var(--accent-glow); color: var(--accent); border: 1px solid rgba(79,124,255,0.2); }
.track.s-converting .track-badge { background: var(--purple-dim);  color: var(--purple); border: 1px solid rgba(167,139,250,0.2); }
.track.s-done .track-badge       { background: var(--success-dim); color: var(--success);border: 1px solid rgba(16,185,129,0.2); }
.track.s-error .track-badge      { background: var(--error-dim);   color: var(--error);  border: 1px solid rgba(248,113,113,0.2); }

.track-stats {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.76rem;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
}

.track-pct { font-weight: 700; font-size: 0.82rem; color: var(--accent); min-width: 34px; text-align: right; }

.track-prog { height: 3px; background: rgba(255,255,255,0.07); border-radius: 99px; overflow: hidden; }

.track-fill {
  height: 100%;
  border-radius: 99px;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  transition: width 0.35s ease;
}

.track.s-done .track-fill       { background: var(--success); }
.track.s-error .track-fill      { background: var(--error); }
.track.s-converting .track-fill { background: var(--purple); }
.track.s-downloading .track-fill {
  background: linear-gradient(90deg, var(--accent) 0%, var(--accent2) 50%, var(--accent) 100%);
  background-size: 200% 100%;
  animation: shimmer 1.8s linear infinite;
}

.track-error-row {
  font-size: 0.78rem;
  color: #fca5a5;
  background: var(--error-dim);
  border: 1px solid rgba(248,113,113,0.2);
  border-radius: 6px;
  padding: 6px 10px;
  font-family: var(--mono);
}

/* ── Spinner ──────────────────────────────────────────────── */
.spinner {
  display: inline-block;
  border: 2px solid rgba(255,255,255,0.15);
  border-top-color: currentColor;
  border-radius: 50%;
  animation: spin 0.65s linear infinite;
}

.spinner.sm { width: 12px; height: 12px; }
.spinner.md { width: 16px; height: 16px; }

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

/* ── Modal overlay ────────────────────────────────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(4,6,18,0.8);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  z-index: 999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  animation: fadeIn 0.18s ease;
}

@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

/* ── Modal card ───────────────────────────────────────────── */
.modal {
  background: #0d1628;
  border: 1px solid var(--border-hi);
  border-radius: 18px;
  box-shadow: 0 32px 100px rgba(0,0,0,0.7), 0 1px 0 rgba(255,255,255,0.06) inset;
  display: flex;
  flex-direction: column;
  max-height: 80vh;
  overflow: hidden;
  width: 100%;
  max-width: 500px;
  animation: slideUp 0.22s cubic-bezier(.4,0,.2,1);
}

@keyframes slideUp { from { opacity:0; transform: translateY(16px); } to { opacity:1; transform: translateY(0); } }

/* ── Modal header ─────────────────────────────────────────── */
.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 18px;
  border-bottom: 1px solid var(--border);
}

.modal-header-left {
  display: flex;
  align-items: center;
  gap: 9px;
  font-weight: 600;
  font-size: 0.92rem;
  color: var(--text);
}

.modal-header-left svg { color: var(--text-dim); }

.modal-close {
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-dim);
  cursor: pointer;
  padding: 5px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s;
}

.modal-close:hover { background: rgba(255,255,255,0.1); color: var(--text); }

/* ── Breadcrumb ───────────────────────────────────────────── */
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 2px;
  padding: 10px 16px;
  border-bottom: 1px solid var(--border);
  background: rgba(0,0,0,0.2);
  min-height: 42px;
}

.bc-seg {
  background: none;
  border: none;
  border-radius: 5px;
  color: var(--text-dim);
  cursor: pointer;
  font-family: var(--mono);
  font-size: 0.78rem;
  padding: 2px 7px;
  transition: all 0.15s;
}

.bc-seg:hover { background: rgba(255,255,255,0.08); color: var(--text); }
.bc-seg.current { color: var(--text); font-weight: 600; cursor: default; }
.bc-seg.current:hover { background: none; }

.bc-sep { color: var(--text-muted); font-size: 0.78rem; }

/* ── Modal body (directory list) ──────────────────────────── */
.modal-body {
  overflow-y: auto;
  flex: 1;
  padding: 6px 8px;
}

.modal-body::-webkit-scrollbar { width: 5px; }
.modal-body::-webkit-scrollbar-track { background: transparent; }
.modal-body::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.1); border-radius: 99px; }

.dir-loading {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-muted);
  font-size: 0.85rem;
  padding: 24px 16px;
}

.dir-empty {
  color: var(--text-muted);
  font-size: 0.85rem;
  padding: 24px 16px;
  text-align: center;
}

.dir-error {
  color: var(--error);
  font-size: 0.83rem;
  padding: 16px;
  background: var(--error-dim);
  border-radius: var(--r-sm);
  margin: 8px;
}

.dir-entry {
  align-items: center;
  border-radius: var(--r-sm);
  cursor: pointer;
  display: flex;
  gap: 10px;
  padding: 9px 12px;
  transition: background 0.14s;
  user-select: none;
}

.dir-entry:hover { background: rgba(255,255,255,0.06); }

.dir-entry.back-entry { color: var(--text-dim); margin-bottom: 4px; }
.dir-entry.back-entry svg { color: var(--accent); }

.dir-icon { color: var(--warn); flex-shrink: 0; }
.dir-entry.back-entry .dir-icon { color: var(--text-muted); }

.dir-name {
  font-size: 0.88rem;
  color: var(--text);
  flex: 1;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.dir-entry.back-entry .dir-name { color: var(--text-dim); font-style: italic; }

.dir-chevron { color: var(--text-muted); flex-shrink: 0; margin-left: auto; }

/* ── Modal footer ─────────────────────────────────────────── */
.modal-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 16px;
  border-top: 1px solid var(--border);
  background: rgba(0,0,0,0.2);
  flex-wrap: wrap;
}

/* Toggle switch */
.toggle-label {
  display: flex;
  align-items: center;
  gap: 9px;
  cursor: pointer;
  font-size: 0.82rem;
  color: var(--text-dim);
  user-select: none;
}

.toggle-checkbox { display: none; }

.toggle-track {
  width: 34px;
  height: 20px;
  background: rgba(255,255,255,0.1);
  border: 1px solid var(--border-hi);
  border-radius: 99px;
  position: relative;
  transition: background 0.2s;
  flex-shrink: 0;
}

.toggle-checkbox:checked ~ .toggle-track { background: var(--accent); border-color: var(--accent); }

.toggle-thumb {
  width: 14px;
  height: 14px;
  background: white;
  border-radius: 50%;
  position: absolute;
  top: 2px;
  left: 2px;
  transition: left 0.2s;
  box-shadow: 0 1px 4px rgba(0,0,0,0.4);
}

.toggle-checkbox:checked ~ .toggle-track .toggle-thumb { left: 16px; }

.btn-select {
  align-items: center;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  border: none;
  border-radius: var(--r-sm);
  box-shadow: 0 3px 14px rgba(79,124,255,0.35);
  color: #fff;
  cursor: pointer;
  display: flex;
  font-family: var(--font);
  font-size: 0.86rem;
  font-weight: 700;
  gap: 7px;
  padding: 9px 18px;
  transition: opacity 0.15s, box-shadow 0.15s;
}

.btn-select:hover { box-shadow: 0 5px 20px rgba(79,124,255,0.5); }

/* ── Utilities ────────────────────────────────────────────── */
.hidden { display: none !important; }