:root {
  --bg: #0f1117;
  --panel: #181c26;
  --panel-2: #1f2430;
  --text: #e8eaf0;
  --muted: #9aa3b5;
  --accent: #6c9ef8;
  --accent-2: #4ade80;
  --danger: #f87171;
  --radius: 14px;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}
.app { max-width: 860px; margin: 0 auto; padding: 32px 20px 60px; }

header h1 { font-size: 2rem; margin: 0 0 6px; }
.tagline { color: var(--muted); margin: 0 0 10px; }
.usp {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 10px;
}
.usp li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  background: rgba(74, 222, 128, 0.07);
  border: 1px solid rgba(74, 222, 128, 0.22);
  border-radius: var(--radius);
  padding: 10px 12px;
  font-size: 0.85rem;
  color: #c9e9d4;
  line-height: 1.4;
}
.usp b { color: var(--text); }
.usp-icon {
  font-size: 1.15rem;
  line-height: 1.3;
  flex-shrink: 0;
  color: var(--accent-2);
  font-weight: 800;
}

.dropzone {
  margin: 22px 0;
  border: 2px dashed #3a4356;
  border-radius: var(--radius);
  background: var(--panel);
  cursor: pointer;
  transition: border-color .15s, background .15s;
}
.dropzone:hover, .dropzone.dragover { border-color: var(--accent); background: var(--panel-2); }
.dz-inner { padding: 44px 20px; text-align: center; }
.dz-icon { font-size: 2rem; margin-bottom: 8px; }
.dz-text { font-size: 1.1rem; }
.dz-sub { color: var(--muted); font-size: 0.9rem; }

.settings {
  background: var(--panel);
  border-radius: var(--radius);
  padding: 18px 20px;
}
.settings h2 { font-size: 1.05rem; margin: 0 0 12px; }
.presets { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 10px; }
.preset {
  display: flex; gap: 8px; align-items: flex-start;
  background: var(--panel-2);
  border: 1px solid transparent;
  border-radius: 10px;
  padding: 10px 12px;
  cursor: pointer;
}
.preset:has(input:checked) { border-color: var(--accent); }
.preset input { margin-top: 4px; accent-color: var(--accent); }
.preset small { display: block; color: var(--muted); font-size: 0.78rem; line-height: 1.35; margin-top: 2px; }

.sliders { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 14px; }
.sliders label { font-size: 0.9rem; color: var(--muted); }
.sliders b { color: var(--text); }
.sliders input[type=range] { width: 100%; accent-color: var(--accent); }

.checkbox { display: flex; gap: 10px; margin-top: 14px; font-size: 0.88rem; color: var(--muted); cursor: pointer; }
.checkbox input { margin-top: 3px; accent-color: var(--accent); flex-shrink: 0; }

.progress { background: var(--panel); border-radius: var(--radius); padding: 16px 20px; margin-top: 18px; }
.progress.hidden { display: none; }
.progress-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 10px; }
.bar { height: 10px; background: var(--panel-2); border-radius: 6px; overflow: hidden; }
.bar-fill { height: 100%; width: 0%; background: linear-gradient(90deg, var(--accent), var(--accent-2)); transition: width .2s; }
.progress-detail { color: var(--muted); font-size: 0.85rem; margin-top: 8px; }

.results { display: flex; flex-direction: column; gap: 12px; }
.results:not(:empty) { margin: 18px 0; }
.result-card {
  background: var(--panel);
  border-radius: var(--radius);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}
.result-card.is-success {
  background: rgba(74, 222, 128, 0.10);
  border: 1px solid rgba(74, 222, 128, 0.55);
  animation: success-pop .45s cubic-bezier(.2, 1.4, .4, 1), success-glow 1.6s ease-out;
}
.result-card.is-error {
  border: 1px solid rgba(248, 113, 113, 0.5);
}
@keyframes success-pop {
  0% { transform: scale(0.92); opacity: 0; }
  100% { transform: scale(1); opacity: 1; }
}
@keyframes success-glow {
  0% { box-shadow: 0 0 0 0 rgba(74, 222, 128, 0.55); }
  100% { box-shadow: 0 0 0 22px rgba(74, 222, 128, 0); }
}
.result-check {
  width: 44px; height: 44px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem; font-weight: 800;
  flex-shrink: 0;
  background: var(--accent-2); color: #0b1020;
}
.is-error .result-check { background: var(--danger); }
.result-done { color: var(--accent-2); font-weight: 700; font-size: 1.05rem; margin-bottom: 2px; }
.result-card .btn-download { background: var(--accent-2); font-size: 1.05rem; padding: 12px 22px; }
.result-info { flex: 1; min-width: 220px; }
.result-name { font-weight: 600; word-break: break-all; }
.result-sizes { color: var(--muted); font-size: 0.9rem; margin-top: 4px; }
.result-savings { color: var(--accent-2); font-weight: 700; font-size: 1.3rem; }
.result-savings.worse { color: var(--danger); font-size: 0.95rem; font-weight: 500; }
.result-error { color: var(--danger); font-size: 0.9rem; }

.btn, .btn-secondary {
  border: none; border-radius: 10px; padding: 10px 18px;
  font-size: 0.95rem; font-weight: 600; cursor: pointer;
}
.btn { background: var(--accent); color: #0b1020; }
.btn:hover { filter: brightness(1.1); }
.btn-secondary { background: var(--panel-2); color: var(--text); border: 1px solid #3a4356; }
.btn-secondary:hover { border-color: var(--danger); color: var(--danger); }

/* ---- Топбар и переключение языка ---- */
.topbar { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; }
.logo { color: var(--text); text-decoration: none; font-weight: 800; font-size: 1.05rem; }
.langs { display: flex; flex-wrap: wrap; gap: 4px; font-size: 0.82rem; }
.langs a, .langs .active {
  text-decoration: none; border-radius: 8px; padding: 4px 9px;
}
.langs a { color: var(--muted); border: 1px solid transparent; }
.langs a:hover { color: var(--text); border-color: var(--accent); }
.langs .active { color: var(--text); background: var(--panel-2); border: 1px solid #3a4356; }

/* RTL (арабский): зеркалим отступы списков */
[dir="rtl"] .steps, [dir="rtl"] .guides { padding-left: 0; padding-right: 22px; }
[dir="rtl"] .content th, [dir="rtl"] .content td { text-align: right; }
header h1 em { font-style: normal; color: var(--accent-2); }

/* ---- Вирусный блок шаринга ---- */
.share-block { width: 100%; border-top: 1px solid rgba(74, 222, 128, 0.25); padding-top: 12px; margin-top: 4px; }
.share-lead { font-size: 0.88rem; color: var(--muted); margin-bottom: 8px; }
.share-btns { display: flex; flex-wrap: wrap; gap: 8px; }
.share-btn {
  display: inline-block;
  background: var(--panel-2);
  border: 1px solid #3a4356;
  color: var(--text);
  border-radius: 8px;
  padding: 7px 12px;
  font-size: 0.85rem;
  text-decoration: none;
  cursor: pointer;
}
.share-btn:hover { border-color: var(--accent); }
.share-native { border-color: var(--accent-2); }
.result-total { color: var(--muted); font-size: 0.82rem; margin-top: 4px; }

/* ---- Контентные страницы ---- */
.content { margin-top: 30px; }
.content h2 { font-size: 1.25rem; margin: 28px 0 10px; }
.content p { color: #c4cad6; margin: 10px 0; }
.content a { color: var(--accent); }
.steps { color: #c4cad6; padding-left: 22px; }
.steps li { margin: 8px 0; }
.tablewrap { overflow-x: auto; }
.content table { border-collapse: collapse; width: 100%; margin: 12px 0; font-size: 0.92rem; }
.content th, .content td { border: 1px solid #2c3444; padding: 8px 12px; text-align: left; }
.content th { background: var(--panel); }
.content td b { color: var(--accent-2); }
.content details {
  background: var(--panel);
  border-radius: 10px;
  padding: 12px 16px;
  margin: 8px 0;
}
.content summary { cursor: pointer; font-weight: 600; }
.content details p { margin: 10px 0 2px; }
.guides { color: #c4cad6; padding-left: 22px; }
.guides li { margin: 6px 0; }

footer { margin-top: 36px; color: var(--muted); font-size: 0.82rem; text-align: center; }
footer a { color: var(--accent); }
.footnav { display: flex; flex-wrap: wrap; gap: 6px 16px; justify-content: center; margin-bottom: 10px; }
.footnav a { color: var(--muted); text-decoration: none; }
.footnav a:hover { color: var(--accent); }

@media (max-width: 560px) {
  .sliders { grid-template-columns: 1fr; }
}