@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600&family=JetBrains+Mono:wght@400;500&display=swap');

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

:root {
  --bg: #f8f9fb;
  --white: #fff;
  --border: #e2e6ea;
  --accent: #4f8ef7;
  --accent-h: #3a7be8;
  --accent-light: #eef4ff;
  --success: #22c55e;
  --success-bg: #f0fdf4;
  --success-border: #bbf7d0;
  --error: #ef4444;
  --error-bg: #fef2f2;
  --warn: #f59e0b;
  --warn-bg: #fffbeb;
  --warn-border: #fde68a;
  --text: #1a1f2e;
  --muted: #8492a6;
  --radius: 12px;
  --shadow: 0 1px 3px rgba(0,0,0,.06), 0 4px 16px rgba(0,0,0,.04);
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', sans-serif;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 0 16px 80px;
}

/* ── Top nav ────────────────────────────────────────── */
.top-nav {
  width: 100%;
  max-width: 760px;
  display: flex;
  gap: 0;
  border-bottom: 2px solid var(--border);
  margin-bottom: 32px;
  padding-top: 32px;
}

.top-tab {
  flex: 1;
  padding: 12px 8px;
  font-size: .85rem;
  font-weight: 500;
  cursor: pointer;
  border: none;
  background: transparent;
  color: var(--muted);
  font-family: inherit;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  transition: all .15s;
  white-space: nowrap;
  text-align: center;
  min-width: 0;
}

.top-tab:hover { color: var(--text) }
.top-tab.active { color: var(--accent); border-bottom-color: var(--accent); font-weight: 600 }

/* ── Tab panels ─────────────────────────────────────── */
.tab-panel {
  display: none;
  width: 100%;
  max-width: 760px;
  flex-direction: column;
  align-items: center;
}

.tab-panel.active { display: flex }

/* ── Panel header ───────────────────────────────────── */
.panel-header { text-align: center; margin-bottom: 28px; width: 100% }
.panel-header h2 { font-size: 1.4rem; font-weight: 600; letter-spacing: -.02em }
.panel-header h2 span { color: var(--accent) }
.panel-header p { color: var(--muted); font-size: .87rem; margin-top: 6px }

/* ── Cards ──────────────────────────────────────────── */
.card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px 28px;
  width: 100%;
  margin-bottom: 16px;
  box-shadow: var(--shadow);
}

.card-header { display: flex; align-items: center; gap: 10px; margin-bottom: 20px }

.step {
  width: 26px;
  height: 26px;
  background: var(--accent-light);
  color: var(--accent);
  border-radius: 50%;
  font-size: .72rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.card-header h3 { font-size: .92rem; font-weight: 600 }

/* ── Drop zone ──────────────────────────────────────── */
.dropzone {
  border: 2px dashed var(--border);
  border-radius: 10px;
  padding: 36px 20px;
  text-align: center;
  cursor: pointer;
  transition: all .2s;
  position: relative;
  background: var(--bg);
}

.dropzone:hover,
.dropzone.dragover { border-color: var(--accent); background: var(--accent-light) }
.dropzone input[type=file] { position: absolute; inset: 0; opacity: 0; cursor: pointer; width: 100%; height: 100% }
.dz-icon { font-size: 2rem; margin-bottom: 8px }
.dz-label { font-size: .9rem; font-weight: 500 }
.dz-sub { font-size: .78rem; color: var(--muted); margin-top: 4px }

/* ── File pill ──────────────────────────────────────── */
.file-pill {
  display: none;
  align-items: center;
  gap: 12px;
  background: var(--success-bg);
  border: 1px solid var(--success-border);
  border-radius: 8px;
  padding: 14px 16px;
}

.file-pill-info .name { font-size: .88rem; font-weight: 500 }
.file-pill-info .sub { font-size: .75rem; color: var(--muted); margin-top: 2px }

.btn-clear {
  margin-left: auto;
  background: none;
  border: 1px solid var(--border);
  color: var(--muted);
  font-size: .72rem;
  padding: 4px 10px;
  border-radius: 6px;
  cursor: pointer;
  font-family: inherit;
  transition: all .15s;
  white-space: nowrap;
}

.btn-clear:hover { border-color: var(--error); color: var(--error) }

/* ── Mode toggle tabs ───────────────────────────────── */
.mode-tabs {
  display: flex;
  gap: 0;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 3px;
  width: fit-content;
  flex-wrap: wrap;
}

.mode-tab {
  padding: 7px 16px;
  border-radius: 6px;
  font-size: .78rem;
  font-weight: 500;
  cursor: pointer;
  transition: all .15s;
  border: none;
  background: transparent;
  color: var(--muted);
  font-family: inherit;
}

.mode-tab.active { background: var(--white); color: var(--accent); box-shadow: 0 1px 4px rgba(0,0,0,.08) }

/* ── Options grid ───────────────────────────────────── */
.options-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 0 }

.field label { display: block; font-size: .76rem; font-weight: 500; color: var(--muted); margin-bottom: 5px }

.field input,
.field select {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 7px;
  color: var(--text);
  font-family: 'Inter', sans-serif;
  font-size: .82rem;
  padding: 9px 11px;
  outline: none;
  transition: border-color .15s;
}

.field input:focus,
.field select:focus { border-color: var(--accent) }

.hint { font-size: .72rem; color: var(--muted); margin-top: 4px }

.section-label {
  font-size: .72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--muted);
  margin-bottom: 10px;
  margin-top: 18px;
}

hr { border: none; border-top: 1px solid var(--border); margin: 16px 0 }

/* ── Buttons ────────────────────────────────────────── */
.btn-row { display: flex; gap: 10px; margin-top: 20px; flex-wrap: wrap }

.btn {
  font-family: 'Inter', sans-serif;
  font-size: .82rem;
  font-weight: 600;
  padding: 10px 22px;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  transition: all .15s;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  text-decoration: none;
}

.btn-primary { background: var(--accent); color: #fff }
.btn-primary:hover { background: var(--accent-h) }
.btn-primary:disabled { opacity: .4; cursor: not-allowed }

.btn-ghost { background: transparent; border: 1px solid var(--border); color: var(--muted) }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent) }
.btn-ghost:disabled { opacity: .4; cursor: not-allowed }

.btn-green { background: var(--success); color: #fff }
.btn-green:hover { filter: brightness(1.05) }

.btn-blue { background: var(--accent); color: #fff }
.btn-blue:hover { background: var(--accent-h) }

/* ── Progress ───────────────────────────────────────── */
.progress-wrap { display: none; margin-top: 18px }

.progress-track {
  background: var(--bg);
  border-radius: 99px;
  height: 8px;
  overflow: hidden;
  border: 1px solid var(--border);
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), #7eb8ff);
  width: 0%;
  border-radius: 99px;
  transition: width .4s ease;
}

.progress-label {
  display: flex;
  justify-content: space-between;
  margin-top: 7px;
  font-size: .76rem;
  color: var(--muted);
}

/* ── Stats ──────────────────────────────────────────── */
.stats-row { display: none; gap: 10px; margin-top: 14px; flex-wrap: wrap }

.stat {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 7px;
  padding: 7px 13px;
  font-size: .78rem;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 5px;
}

.stat.ok { background: var(--success-bg); border-color: var(--success-border); color: #166534 }
.stat.err { background: var(--error-bg); border-color: #fecaca; color: #991b1b; display: none }
.stat.skip { background: var(--warn-bg); border-color: var(--warn-border); color: #92400e; display: none }

/* ── Log ────────────────────────────────────────────── */
.log-wrap { display: none; margin-top: 16px }

.log-box {
  background: #1a1f2e;
  border-radius: 8px;
  padding: 14px 16px;
  font-family: 'JetBrains Mono', monospace;
  font-size: .7rem;
  line-height: 1.85;
  max-height: 240px;
  overflow-y: auto;
  color: #8492a6;
}

.log-ok { color: #4ade80 }
.log-err { color: #f87171 }
.log-warn { color: #fbbf24 }
.log-done { color: #60a5fa; font-weight: 500 }
.log-info { color: #8492a6 }
.log-skip { color: #64748b }

/* ── Results banner ─────────────────────────────────── */
.results-banner {
  display: none;
  background: var(--success-bg);
  border: 1px solid var(--success-border);
  border-radius: var(--radius);
  padding: 22px 26px;
  width: 100%;
  margin-bottom: 16px;
  box-shadow: var(--shadow);
}

.results-banner h3 { font-size: .95rem; font-weight: 600; color: #166534; margin-bottom: 14px }
.results-downloads { display: flex; gap: 12px; flex-wrap: wrap }
.results-stat { font-size: .78rem; color: var(--muted); margin-top: 12px; line-height: 1.7 }

/* ── Dark mode toggle ───────────────────────────────── */
.dark-toggle {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 100;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 7px 12px;
  cursor: pointer;
  font-size: .78rem;
  font-weight: 500;
  color: var(--muted);
  font-family: inherit;
  transition: all .15s;
  box-shadow: var(--shadow);
  display: flex;
  align-items: center;
  gap: 6px;
}

.dark-toggle:hover { border-color: var(--accent); color: var(--accent) }

/* ── Review table ───────────────────────────────────── */
.review-row {
  display: grid;
  grid-template-columns: 24px minmax(0,1fr) minmax(0,1fr);
  gap: 12px;
  padding: 14px 10px;
  align-items: start;
  border-bottom: 1px solid var(--border);
}

.review-source {
  font-size: .72rem;
  font-family: monospace;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px 10px;
  word-break: break-all;
  cursor: default;
  min-width: 0;
  overflow-wrap: anywhere;
}

.review-target { display: flex; flex-direction: column; gap: 5px; min-width: 0 }
.review-chips { display: flex; gap: 5px; flex-wrap: wrap }

.review-chip {
  font-size: .7rem;
  font-family: monospace;
  padding: 3px 9px;
  border-radius: 99px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--muted);
  cursor: pointer;
  transition: all .15s;
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.review-chip.top { border-color: var(--accent); background: var(--accent-light); color: var(--accent) }

.review-input {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 7px;
  color: var(--text);
  font-family: inherit;
  font-size: .78rem;
  padding: 7px 10px;
  outline: none;
  transition: border-color .15s;
  min-width: 0;
}

.review-input:focus { border-color: var(--accent) }

.review-toolbar { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; flex-wrap: wrap }

.review-header {
  display: grid;
  grid-template-columns: 24px 1fr 1fr;
  gap: 8px;
  margin-bottom: 6px;
  padding: 0 4px;
}

/* ── Shared utility classes ─────────────────────────── */
.mono-textarea {
  width: 100%;
  min-height: 140px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px;
  font-family: 'JetBrains Mono', monospace;
  font-size: .72rem;
  line-height: 1.6;
  color: var(--text);
  resize: vertical;
  outline: none;
  transition: border-color .15s;
}

.mono-textarea:focus { border-color: var(--accent) }
.mono-textarea.tall { min-height: 200px }

.spinner-msg { display: none; margin-top: 14px; font-size: .82rem; color: var(--muted) }

.error-box {
  display: none;
  margin-top: 12px;
  background: var(--error-bg);
  border: 1px solid #fecaca;
  border-radius: 8px;
  padding: 12px 14px;
  font-size: .8rem;
  color: #991b1b;
}

.error-banner {
  display: none;
  width: 100%;
  margin-bottom: 16px;
  background: var(--error-bg);
  border: 1px solid #fecaca;
  border-radius: var(--radius);
  padding: 14px 16px;
  font-size: .82rem;
  color: #991b1b;
}

.success-box {
  display: none;
  margin-top: 12px;
  font-size: .82rem;
  padding: 10px 14px;
  background: var(--success-bg);
  border: 1px solid var(--success-border);
  border-radius: 8px;
  color: #166534;
}

.error-prewrap { white-space: pre-wrap }

.url-count { font-size: .72rem; color: var(--muted); margin-top: 5px; text-align: right }

/* ── Dark mode ──────────────────────────────────────── */
[data-theme="dark"] {
  --bg: #0f1117;
  --white: #1a1f2e;
  --border: #2a3142;
  --accent: #6096f8;
  --accent-h: #4f8ef7;
  --accent-light: #1a2340;
  --success: #22c55e;
  --success-bg: #0d2818;
  --success-border: #166534;
  --error: #f87171;
  --error-bg: #2d1515;
  --warn: #fbbf24;
  --warn-bg: #2d2008;
  --warn-border: #78490a;
  --text: #e2e8f0;
  --muted: #8492a6;
  --shadow: 0 1px 3px rgba(0,0,0,.3), 0 4px 16px rgba(0,0,0,.2);
}

[data-theme="dark"] .log-box { background: #070a10 }
[data-theme="dark"] .field input,
[data-theme="dark"] .field select,
[data-theme="dark"] textarea { color-scheme: dark }
[data-theme="dark"] input[type=range] { color-scheme: dark }

/* ── Responsive ─────────────────────────────────────── */
@media (max-width: 764px) {
  .top-nav { flex-wrap: wrap; border-bottom: none; gap: 6px; margin-bottom: 16px }
  .top-tab {
    flex: 1 1 calc(50% - 6px);
    border: 1px solid var(--border);
    border-radius: 8px;
    border-bottom: 2px solid transparent;
    font-size: .78rem;
    padding: 10px 6px;
    margin-bottom: 0;
  }
  .top-tab.active { background: var(--accent-light); border-color: var(--accent); border-bottom-color: var(--accent) }
}

@media (max-width: 540px) {
  .options-grid { grid-template-columns: 1fr }
}

@media (max-width: 640px) {
  .review-row { grid-template-columns: 24px 1fr; grid-template-rows: auto auto; row-gap: 8px }
  .review-row .review-target { grid-column: 2 }
  .review-header { display: none }
}