:root {
  --bg: #f7f9fc;
  --surface: #ffffff;
  --surface2: #ffffff;
  --border: #e3e8f0;
  --text: #0f172a;
  --muted: #5b6878;
  --accent: #2563eb;
  --success: #059669;
  --danger: #dc2626;
  --radius: 8px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 15px; }
body { background: var(--bg); color: var(--text); font-family: 'Segoe UI', system-ui, sans-serif; min-height: 100vh; }

nav { background: var(--surface); border-bottom: 1px solid var(--border); padding: 0 20px; }
.nav-inner { max-width: 1000px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; height: 52px; }
.logo { font-weight: 700; font-size: 1.1rem; }
.nav-badge { font-size: .75rem; color: var(--muted); background: var(--surface2); border: 1px solid var(--border); padding: 3px 10px; border-radius: 20px; }

.container { max-width: 1000px; margin: 0 auto; padding: 24px 20px; }

/* DROP ZONE */
.drop-zone { border: 2px dashed var(--border); border-radius: 12px; padding: 48px 20px; text-align: center; cursor: pointer; transition: border-color .2s, background .2s; margin-bottom: 16px; }
.drop-zone:hover, .drop-zone.over { border-color: var(--accent); background: #1a1e40; }
.dz-icon { font-size: 2.5rem; margin-bottom: 12px; }
.dz-text { font-size: 1rem; margin-bottom: 6px; }
.dz-link { color: var(--accent); text-decoration: underline; }
.dz-sub { font-size: .8rem; color: var(--muted); }

/* SETTINGS BAR */
.settings-bar { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px 18px; margin-bottom: 16px; }
.settings-row { display: flex; flex-wrap: wrap; gap: 16px; align-items: center; margin-bottom: 12px; }
.setting-group { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.sg-label { font-size: .8rem; color: var(--muted); white-space: nowrap; }
.radio-label { display: flex; align-items: center; gap: 5px; cursor: pointer; font-size: .875rem; }
.radio-label input { accent-color: var(--accent); }
.lock-label { display: flex; align-items: center; gap: 5px; cursor: pointer; font-size: .82rem; color: var(--muted); }
.lock-label input { accent-color: var(--accent); }
.num-input { background: var(--surface2); border: 1px solid var(--border); color: var(--text); padding: 6px 10px; border-radius: 6px; width: 75px; font-size: .875rem; outline: none; text-align: center; }
.num-input:focus { border-color: var(--accent); }
select { background: var(--surface2); border: 1px solid var(--border); color: var(--text); padding: 6px 12px; border-radius: 6px; font-size: .875rem; outline: none; cursor: pointer; }
select:focus { border-color: var(--accent); }
input[type=range] { accent-color: var(--accent); width: 120px; }
.settings-actions { display: flex; gap: 10px; justify-content: flex-end; }
.btn-primary { background: var(--accent); border: none; color: #fff; padding: 9px 22px; border-radius: var(--radius); cursor: pointer; font-size: .875rem; font-weight: 600; transition: opacity .15s; }
.btn-primary:hover { opacity: .85; }
.btn-secondary { background: var(--surface2); border: 1px solid var(--border); color: var(--text); padding: 9px 18px; border-radius: var(--radius); cursor: pointer; font-size: .875rem; transition: background .15s; }
.btn-secondary:hover { background: var(--border); }

/* IMAGE LIST */
.image-list { display: flex; flex-direction: column; gap: 10px; }
.image-item { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); display: flex; gap: 14px; padding: 14px; align-items: flex-start; }
.img-thumb { width: 80px; height: 60px; object-fit: cover; border-radius: 5px; flex-shrink: 0; background: var(--surface2); }
.img-info { flex: 1; min-width: 0; }
.img-name { font-size: .9rem; font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; margin-bottom: 4px; }
.img-meta { font-size: .78rem; color: var(--muted); display: flex; gap: 16px; flex-wrap: wrap; }
.img-actions { display: flex; gap: 8px; flex-shrink: 0; align-items: center; }
.btn-download { background: var(--success); border: none; color: #0a1a12; padding: 8px 16px; border-radius: 6px; cursor: pointer; font-size: .82rem; font-weight: 700; transition: opacity .15s; }
.btn-download:hover { opacity: .85; }
.btn-remove { background: none; border: 1px solid var(--border); color: var(--muted); width: 30px; height: 30px; border-radius: 6px; cursor: pointer; transition: color .15s; font-size: .9rem; }
.btn-remove:hover { color: var(--danger); border-color: var(--danger); }
.size-arrow { color: var(--muted); font-size: .75rem; }
.size-after { color: var(--success); font-weight: 600; }
.size-after.bigger { color: var(--danger); }

.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; }

@media (max-width: 600px) {
  .settings-row { flex-direction: column; align-items: flex-start; }
  .image-item { flex-wrap: wrap; }
}