:root {
  --bg: #ffffff;
  --ink: #111418;
  --ink-2: #4b5563;
  --ink-3: #7b8491;
  --line: #d9dde2;
  --line-strong: #b6bcc4;
  --surface: #f4f5f7;
  --accent: #1b4dd8;
  --accent-ink: #ffffff;
  --ok: #16794a;
  --ok-bg: #f0faf4;
  --err: #b42318;
  --err-bg: #fdf3f2;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  font-size: 15px;
  line-height: 1.5;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

/* ---------- Top bar ---------- */
.bar {
  border-bottom: 1px solid var(--line);
  background: var(--bg);
}
.bar-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
  height: 56px;
  display: flex;
  align-items: center;
  gap: 16px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 17px;
  letter-spacing: -0.01em;
  color: var(--ink);
  text-decoration: none;
}
.brand-logo {
  width: 26px;
  height: 26px;
}
.bar-note {
  font-size: 13px;
  color: var(--ink-3);
  padding-left: 16px;
  border-left: 1px solid var(--line);
}

/* ---------- Layout ---------- */
.wrap {
  max-width: 1080px;
  margin: 0 auto;
  padding: 28px 24px 48px;
}
.workspace {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  gap: 24px;
  align-items: start;
}
.panel {
  border: 1px solid var(--line);
}
.panel-main { padding: 24px; }

/* ---------- Panel kiri ---------- */
.panel-title {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-3);
  padding: 14px 16px 10px;
  border-bottom: 1px solid var(--line);
}
.field { padding: 12px 16px; border-bottom: 1px solid var(--line); display: block; }
.field-label { display: block; font-size: 12px; color: var(--ink-3); margin-bottom: 6px; }
.field input {
  width: 100%;
  font: inherit;
  font-size: 14px;
  color: var(--ink);
  background: var(--bg);
  border: 1px solid var(--line-strong);
  padding: 7px 9px;
  outline: none;
}
.field input:focus { border-color: var(--accent); }

.tool-list {
  max-height: 60vh;
  overflow-y: auto;
  padding: 6px 0;
}
.tool-tab {
  display: block;
  width: 100%;
  text-align: left;
  font: inherit;
  font-size: 14px;
  color: var(--ink-2);
  background: none;
  border: none;
  border-left: 2px solid transparent;
  padding: 7px 16px;
  cursor: pointer;
}
.tool-tab:hover { background: var(--surface); color: var(--ink); }
.tool-tab.active {
  border-left-color: var(--accent);
  color: var(--ink);
  font-weight: 600;
  background: var(--surface);
}
.tool-tab .tab-to { color: var(--ink-3); font-weight: 400; font-size: 12px; }
.tool-tab.hidden { display: none; }

/* ---------- Panel kanan ---------- */
.main-head { margin-bottom: 20px; }
.main-title { font-size: 20px; font-weight: 650; letter-spacing: -0.01em; }
.main-desc { font-size: 14px; color: var(--ink-2); margin-top: 4px; }

.dropzone {
  border: 1px dashed var(--line-strong);
  background: var(--surface);
  padding: 40px 20px;
  text-align: center;
  cursor: pointer;
  outline: none;
}
.dropzone:hover, .dropzone:focus-visible { border-color: var(--accent); }
.dropzone.dragover { border-color: var(--accent); background: #eef2fb; }
.dz-title { font-size: 15px; font-weight: 600; color: var(--ink); }
.dz-sub { font-size: 13px; color: var(--ink-3); margin-top: 4px; }

.file-list { list-style: none; margin-top: 16px; display: flex; flex-direction: column; gap: 8px; }
.file-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 9px 12px;
  border: 1px solid var(--line);
}
.file-ext {
  flex: 0 0 auto;
  width: 42px;
  text-align: center;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ink-3);
  border: 1px solid var(--line);
  padding: 3px 0;
}
.file-info { flex: 1; min-width: 0; }
.file-name { font-size: 14px; font-weight: 500; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.file-size { font-size: 12px; color: var(--ink-3); }
.file-remove {
  border: none;
  background: none;
  font: inherit;
  font-size: 12px;
  color: var(--ink-3);
  cursor: pointer;
  padding: 4px 6px;
}
.file-remove:hover { color: var(--err); text-decoration: underline; }

.actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  flex-wrap: wrap;
}
.selected-count { font-size: 13px; color: var(--ink-3); }
.action-btns { display: flex; gap: 8px; }
.btn {
  font: inherit;
  font-size: 14px;
  font-weight: 600;
  padding: 9px 18px;
  border: 1px solid var(--line-strong);
  background: var(--bg);
  color: var(--ink);
  cursor: pointer;
  border-radius: 0;
}
.btn:disabled { opacity: 0.45; cursor: not-allowed; }
.btn-plain:not(:disabled):hover { border-color: var(--ink-2); }
.btn-solid {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-ink);
}
.btn-solid:not(:disabled):hover { background: #163fae; border-color: #163fae; }

.progress-wrap { margin-top: 16px; }
.progress-bar { height: 4px; background: var(--line); overflow: hidden; }
.progress-fill { height: 100%; width: 0; background: var(--accent); transition: width 0.2s ease; }
.progress-text { display: block; font-size: 13px; color: var(--ink-2); margin-top: 8px; }

.result-wrap {
  margin-top: 16px;
  border: 1px solid #b7e0c8;
  background: var(--ok-bg);
  padding: 14px 16px;
}
.result-title { font-size: 14px; font-weight: 600; color: var(--ok); margin-bottom: 10px; }
.result-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.result-name { font-size: 14px; color: var(--ink); word-break: break-all; }
.result-note { font-size: 13px; color: var(--err); margin-top: 10px; }
.save-note { color: var(--ok); font-weight: 600; }
.btn-download {
  background: var(--ok);
  color: #fff;
  text-decoration: none;
  font-size: 14px;
  font-weight: 600;
  padding: 8px 16px;
  white-space: nowrap;
}
.btn-download:hover { background: #0f5c38; }

.error-wrap {
  margin-top: 16px;
  border: 1px solid #f0c2bd;
  background: var(--err-bg);
  color: var(--err);
  font-size: 14px;
  padding: 12px 16px;
}

/* ---------- Index semua alat ---------- */
.index { margin-top: 40px; padding-top: 24px; border-top: 1px solid var(--line); }
.index-title {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-3);
  margin-bottom: 12px;
}
.index-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}
.index-item {
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 12px 14px;
  font-size: 14px;
  color: var(--ink-2);
  background: none;
  border-top: none;
  border-left: none;
  text-align: left;
  font-family: inherit;
  cursor: pointer;
}
.index-item:hover { background: var(--surface); color: var(--ink); }
.index-item .ix-key { display: block; font-size: 12px; color: var(--ink-3); margin-top: 2px; }

/* ---------- Footer ---------- */
.foot { border-top: 1px solid var(--line); }
.foot-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 20px 24px;
  font-size: 13px;
  color: var(--ink-3);
}

/* ---------- Toast ---------- */
.toast {
  position: fixed;
  left: 24px;
  bottom: 24px;
  max-width: 320px;
  background: var(--ink);
  color: #fff;
  font-size: 13px;
  padding: 10px 14px;
  opacity: 0;
  transform: translateY(6px);
  transition: opacity 0.2s ease, transform 0.2s ease;
  pointer-events: none;
}
.toast.show { opacity: 1; transform: none; }
.toast.error { background: var(--err); }

[hidden] { display: none !important; }

/* ---------- Responsive ---------- */
@media (max-width: 820px) {
  .workspace { grid-template-columns: 1fr; }
  .tool-list { max-height: none; display: flex; flex-wrap: wrap; gap: 0; }
  .tool-tab {
    width: auto;
    border-left: none;
    border-bottom: 2px solid transparent;
    padding: 8px 12px;
  }
  .tool-tab.active { border-bottom-color: var(--accent); }
}
@media (max-width: 480px) {
  .wrap { padding: 16px 16px 32px; }
  .panel-main { padding: 16px; }
  .bar-inner { padding: 0 16px; }
  .bar-note { display: none; }
}