:root {
  --bg: #f6f8fb;
  --card: #ffffff;
  --ink: #1f2933;
  --muted: #66707a;
  --primary: #2f9e6e;
  --primary-d: #257a56;
  --accent: #3b7ddd;
  --border: #e3e8ef;
  --shadow: 0 6px 24px rgba(31, 41, 51, 0.08);
  --radius: 14px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Microsoft YaHei", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.6;
}

[dir="rtl"] { direction: rtl; text-align: right; }

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 28px;
  background: linear-gradient(120deg, #eafaf2, #eef4ff);
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}
.brand { display: flex; align-items: center; gap: 14px; }
.logo {
  font-size: 30px;
  background: var(--card);
  border-radius: 50%;
  width: 52px; height: 52px;
  display: inline-flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow);
}
.site-header h1 { font-size: 20px; margin: 0; }
.tagline { margin: 2px 0 0; color: var(--primary-d); font-size: 13px; font-weight: 600; }

.lang { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--muted); }
.lang select {
  padding: 7px 10px; border-radius: 10px; border: 1px solid var(--border);
  background: var(--card); color: var(--ink); font-size: 14px;
}

main { max-width: 880px; margin: 0 auto; padding: 28px 20px 60px; }

.dropzone {
  background: var(--card);
  border: 2px dashed #c7d2dd;
  border-radius: var(--radius);
  padding: 46px 20px;
  text-align: center;
  transition: border-color .2s, background .2s, transform .1s;
  cursor: pointer;
}
.dropzone.drag { border-color: var(--primary); background: #f0fbf5; transform: scale(1.01); }
.dz-icon { font-size: 44px; }
.dz-hint { font-size: 17px; margin: 10px 0 4px; }
.dz-sub { color: var(--muted); font-size: 13px; margin: 0; }
.link-btn {
  background: none; border: none; color: var(--accent); font: inherit;
  font-weight: 700; cursor: pointer; padding: 0; text-decoration: underline;
}

.file-info {
  margin-top: 18px; background: var(--card); border: 1px solid var(--border);
  border-radius: 12px; padding: 14px 16px; display: flex; align-items: center;
  gap: 10px; flex-wrap: wrap;
}
.fi-label { color: var(--muted); font-size: 13px; }
.badge {
  background: #eafaf2; color: var(--primary-d); border-radius: 999px;
  padding: 3px 12px; font-size: 12px; font-weight: 700; text-transform: uppercase;
}

.targets { margin-top: 22px; }
.targets h2 { font-size: 16px; margin: 0 0 12px; }
.target-group { margin-bottom: 16px; }
.tg-title {
  display: flex; align-items: center; gap: 8px; font-weight: 700;
  font-size: 14px; margin-bottom: 8px; color: var(--muted);
}
.tg-chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  border: 1px solid var(--border); background: var(--card); color: var(--ink);
  border-radius: 999px; padding: 7px 14px; font-size: 13px; cursor: pointer;
  font-weight: 600; transition: all .15s;
}
.chip:hover { border-color: var(--primary); }
.chip.active { background: var(--primary); color: #fff; border-color: var(--primary); }

.actions { margin-top: 22px; }
.primary {
  display: inline-block; background: var(--primary); color: #fff; border: none;
  border-radius: 12px; padding: 13px 26px; font-size: 15px; font-weight: 700;
  cursor: pointer; text-decoration: none; box-shadow: var(--shadow);
  transition: background .15s;
}
.primary:hover { background: var(--primary-d); }
.primary:disabled { opacity: .5; cursor: not-allowed; }
.ghost {
  background: none; border: 1px solid var(--border); color: var(--muted);
  border-radius: 12px; padding: 12px 22px; font-size: 14px; cursor: pointer; margin-left: 10px;
}

.result {
  margin-top: 22px; background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 22px; text-align: center;
}
.result #result-msg { font-size: 15px; margin-bottom: 14px; font-weight: 600; }
.result.error #result-msg { color: #c0392b; }
.result.ok #result-msg { color: var(--primary-d); }

.engines { margin-top: 34px; }
.engines h2, .privacy h2 { font-size: 16px; }
.engine-list { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 10px; }
.engine-pill {
  display: flex; align-items: center; gap: 8px; background: var(--card);
  border: 1px solid var(--border); border-radius: 10px; padding: 8px 12px; font-size: 13px;
}
.dot { width: 9px; height: 9px; border-radius: 50%; display: inline-block; }
.dot.on { background: var(--primary); }
.dot.off { background: #cbd2da; }

.privacy {
  margin-top: 34px; background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 20px 22px;
}
.privacy ul { margin: 10px 0 0; padding-left: 20px; }
.privacy li { margin-bottom: 8px; color: #38424d; }
.privacy .about { color: var(--muted); font-size: 13px; margin-top: 12px; }

footer { text-align: center; color: var(--muted); font-size: 12px; padding: 24px; }
footer .copy { margin-top: 4px; }

.hidden { display: none !important; }

@media (max-width: 560px) {
  .site-header { padding: 14px 16px; }
  .site-header h1 { font-size: 17px; }
  main { padding: 20px 14px 50px; }
}