/* ===== Базовые стили, темы, элементы управления ===== */
:root {
  --accent: #4f8cff;
  --accent-rgb: 79, 140, 255;
  --accent-fg: #fff;
  --accent-text: #7fb0ff;
  --font: "Segoe UI Variable Text", "Segoe UI Variable", "Segoe UI", system-ui, -apple-system, "Roboto", "Helvetica Neue", Arial, sans-serif;
  --font-display: "Segoe UI Variable Display", "Segoe UI Variable", "Segoe UI", system-ui, sans-serif;
  --mono: "Cascadia Mono", "Cascadia Code", Consolas, "JetBrains Mono", "Courier New", monospace;
  --r-sm: 6px;
  --r: 10px;
  --r-lg: 14px;
  --r-xl: 20px;
  --ease: cubic-bezier(.2, .9, .25, 1);
  --ease-out: cubic-bezier(.1, .9, .2, 1);
  --blur: blur(40px) saturate(170%);
  font-size: 14px;
}

html[data-theme="dark"] {
  color-scheme: dark;
  --glass: rgba(30, 32, 42, .72);
  --glass-strong: rgba(26, 28, 37, .86);
  --glass-light: rgba(255, 255, 255, .05);
  --win-bg: rgba(29, 31, 40, .9);
  --surface: #1d1f27;
  --surface-2: #23262f;
  --surface-3: #2b2e38;
  --surface-4: #343846;
  --card: rgba(255, 255, 255, .045);
  --card-hover: rgba(255, 255, 255, .075);
  --fg: #f1f3f8;
  --fg-2: #b4b9c8;
  --fg-3: #80869a;
  --line: rgba(255, 255, 255, .075);
  --line-2: rgba(255, 255, 255, .13);
  --hover: rgba(255, 255, 255, .065);
  --press: rgba(255, 255, 255, .1);
  --input: rgba(255, 255, 255, .055);
  --input-border: rgba(255, 255, 255, .09);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, .28);
  --shadow: 0 16px 48px rgba(0, 0, 0, .45), 0 2px 6px rgba(0, 0, 0, .25);
  --shadow-lg: 0 30px 80px rgba(0, 0, 0, .55), 0 4px 14px rgba(0, 0, 0, .3);
  --edge: inset 0 1px 0 rgba(255, 255, 255, .07), 0 0 0 1px rgba(255, 255, 255, .07);
  --danger: #ff6464;
  --success: #3ddc84;
  --warning: #ffb020;
}

html[data-theme="light"] {
  color-scheme: light;
  --glass: rgba(243, 245, 250, .74);
  --glass-strong: rgba(246, 247, 251, .9);
  --glass-light: rgba(255, 255, 255, .5);
  --win-bg: rgba(246, 247, 251, .93);
  --surface: #f6f7fb;
  --surface-2: #ffffff;
  --surface-3: #eceef4;
  --surface-4: #e1e4ec;
  --card: rgba(255, 255, 255, .7);
  --card-hover: rgba(255, 255, 255, .95);
  --fg: #16181d;
  --fg-2: #535a6b;
  --fg-3: #858b9b;
  --line: rgba(0, 0, 0, .075);
  --line-2: rgba(0, 0, 0, .13);
  --hover: rgba(0, 0, 0, .045);
  --press: rgba(0, 0, 0, .075);
  --input: rgba(255, 255, 255, .8);
  --input-border: rgba(0, 0, 0, .1);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, .08);
  --shadow: 0 16px 48px rgba(0, 0, 0, .16), 0 2px 6px rgba(0, 0, 0, .08);
  --shadow-lg: 0 30px 80px rgba(0, 0, 0, .22), 0 4px 14px rgba(0, 0, 0, .1);
  --edge: inset 0 1px 0 rgba(255, 255, 255, .7), 0 0 0 1px rgba(0, 0, 0, .07);
  --danger: #d92d2d;
  --success: #12a150;
  --warning: #c77700;
}

html.no-transparency {
  --glass: var(--surface);
  --glass-strong: var(--surface);
  --win-bg: var(--surface);
}
html.no-transparency .glass, html.no-transparency .win { backdrop-filter: none !important; }
html.no-anim *, html.no-anim *::before, html.no-anim *::after { transition: none !important; animation-duration: 0s !important; animation-delay: 0s !important; }
html.high-contrast body { filter: contrast(1.25) saturate(1.1); }

* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; overflow: hidden; }
body {
  font-family: var(--font);
  font-size: 1rem;
  color: var(--fg);
  background: #000;
  -webkit-font-smoothing: antialiased;
  user-select: none;
  -webkit-user-select: none;
  cursor: default;
}
input, textarea, select, button { font: inherit; color: inherit; }
button { cursor: default; }
[contenteditable], input, textarea { user-select: text; -webkit-user-select: text; }
svg { flex-shrink: 0; }
.glyph { display: block; }
.icon { display: block; }
a { color: var(--accent-text); }
.hidden { display: none !important; }

.glass {
  background: var(--glass);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
  box-shadow: var(--shadow), var(--edge);
}

/* Полосы прокрутки */
::-webkit-scrollbar { width: 12px; height: 12px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--line-2); border-radius: 10px; border: 4px solid transparent; background-clip: padding-box; }
::-webkit-scrollbar-thumb:hover { background-color: var(--fg-3); border-width: 3px; }
::-webkit-scrollbar-corner { background: transparent; }
* { scrollbar-width: thin; scrollbar-color: var(--line-2) transparent; }

/* ===== Кнопки ===== */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 32px; padding: 0 16px;
  border-radius: var(--r-sm);
  background: var(--input);
  border: 1px solid var(--input-border);
  color: var(--fg);
  font-size: .93rem;
  white-space: nowrap;
  transition: background .12s, transform .08s, border-color .12s;
}
.btn:hover { background: var(--hover); }
.btn:active { transform: scale(.98); background: var(--press); }
.btn:disabled { opacity: .45; pointer-events: none; }
.btn.primary { background: var(--accent); border-color: transparent; color: var(--accent-fg); }
.btn.primary:hover { filter: brightness(1.08); }
.btn.danger { background: var(--danger); border-color: transparent; color: #fff; }
.btn.subtle { background: transparent; border-color: transparent; }
.btn.subtle:hover { background: var(--hover); }
.btn.sm { height: 26px; padding: 0 10px; font-size: .86rem; }
.btn.lg { height: 40px; padding: 0 22px; font-size: 1rem; }
.btn:focus-visible, .icon-btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }

.icon-btn {
  display: inline-grid; place-items: center;
  width: 32px; height: 32px;
  border-radius: var(--r-sm);
  background: transparent; border: 0;
  color: var(--fg);
  transition: background .12s;
  flex-shrink: 0;
}
.icon-btn:hover { background: var(--hover); }
.icon-btn:active { background: var(--press); }
.icon-btn:disabled { opacity: .35; pointer-events: none; }
.icon-btn.active { background: rgba(var(--accent-rgb), .18); color: var(--accent-text); }
.icon-btn.sm { width: 26px; height: 26px; }

/* ===== Поля ввода ===== */
.input {
  height: 32px; padding: 0 10px;
  border-radius: var(--r-sm);
  border: 1px solid var(--input-border);
  border-bottom-color: var(--line-2);
  background: var(--input);
  color: var(--fg);
  outline: none;
  min-width: 0;
  transition: border-color .12s, background .12s;
}
.input:hover { background: var(--card-hover); }
.input:focus { border-bottom: 2px solid var(--accent); background: var(--surface-2); }
textarea.input { height: auto; padding: 8px 10px; resize: vertical; }
select.input { padding-right: 6px; }
select.input option { background: var(--surface-2); color: var(--fg); }
input[type="color"].input { padding: 2px; width: 44px; }

/* Переключатель */
.toggle { position: relative; display: inline-flex; align-items: center; gap: 10px; cursor: default; }
.toggle input { position: absolute; opacity: 0; pointer-events: none; }
.toggle .track {
  width: 40px; height: 20px; border-radius: 10px;
  border: 1px solid var(--fg-2);
  background: transparent;
  position: relative;
  transition: background .15s, border-color .15s;
  flex-shrink: 0;
}
.toggle .track::after {
  content: ""; position: absolute; top: 3px; left: 3px;
  width: 12px; height: 12px; border-radius: 50%;
  background: var(--fg-2);
  transition: transform .18s var(--ease), width .12s, background .15s;
}
.toggle:hover .track::after { width: 14px; }
.toggle input:checked + .track { background: var(--accent); border-color: var(--accent); }
.toggle input:checked + .track::after { transform: translateX(20px); background: var(--accent-fg); }
.toggle:hover input:checked + .track::after { transform: translateX(18px); }
.toggle .tlabel { font-size: .93rem; color: var(--fg-2); min-width: 34px; }

/* Ползунок */
input[type="range"].slider {
  -webkit-appearance: none; appearance: none;
  height: 20px; background: transparent; width: 100%;
  --val: 50%;
}
input[type="range"].slider::-webkit-slider-runnable-track {
  height: 4px; border-radius: 2px;
  background: linear-gradient(to right, var(--accent) var(--val), var(--line-2) var(--val));
}
input[type="range"].slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 20px; height: 20px; margin-top: -8px;
  border-radius: 50%;
  background: var(--surface-2);
  box-shadow: 0 0 0 1px var(--line-2), inset 0 0 0 5px var(--surface-2), inset 0 0 0 10px var(--accent);
  transition: box-shadow .12s;
}
input[type="range"].slider:hover::-webkit-slider-thumb { box-shadow: 0 0 0 1px var(--line-2), inset 0 0 0 4px var(--surface-2), inset 0 0 0 10px var(--accent); }
input[type="range"].slider::-moz-range-track { height: 4px; border-radius: 2px; background: var(--line-2); }
input[type="range"].slider::-moz-range-progress { height: 4px; border-radius: 2px; background: var(--accent); }
input[type="range"].slider::-moz-range-thumb { width: 14px; height: 14px; border-radius: 50%; background: var(--accent); border: 4px solid var(--surface-2); box-shadow: 0 0 0 1px var(--line-2); }

input[type="checkbox"].check { accent-color: var(--accent); width: 16px; height: 16px; }

.row-gap { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.muted { color: var(--fg-2); }
.small { font-size: .86rem; }
.spacer { flex: 1; }
.kbd { font-family: var(--mono); font-size: .85em; padding: 1px 6px; border-radius: 4px; background: var(--surface-3); border: 1px solid var(--line); }

/* Спиннер Windows */
.spinner { width: 32px; height: 32px; position: relative; }
.spinner i {
  position: absolute; inset: 0;
  animation: spin-dot 2.2s infinite cubic-bezier(.5, .1, .5, .9);
}
.spinner i::before { content: ""; position: absolute; left: 50%; top: 0; width: 4px; height: 4px; border-radius: 50%; background: currentColor; transform: translateX(-50%); }
.spinner i:nth-child(2) { animation-delay: .12s; }
.spinner i:nth-child(3) { animation-delay: .24s; }
.spinner i:nth-child(4) { animation-delay: .36s; }
.spinner i:nth-child(5) { animation-delay: .48s; }
@keyframes spin-dot {
  0% { transform: rotate(0); opacity: 1; }
  70% { transform: rotate(560deg); opacity: 1; }
  85%, 100% { transform: rotate(720deg); opacity: 0; }
}
html.no-anim .spinner i { animation-duration: 2.2s !important; }

.ring-loader { width: 22px; height: 22px; border-radius: 50%; border: 2.5px solid var(--line-2); border-top-color: var(--accent); animation: rot .8s linear infinite; }
@keyframes rot { to { transform: rotate(360deg); } }

.empty-state { display: grid; place-items: center; text-align: center; color: var(--fg-2); padding: 40px 20px; gap: 6px; }
.empty-state svg { opacity: .6; }

.offline-screen { height: 100%; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 10px; color: var(--fg-2); text-align: center; padding: 20px; background: var(--surface); }
.offline-screen h2 { margin: 6px 0 0; color: var(--fg); font-weight: 600; font-size: 1.4rem; }
.offline-screen p { margin: 0 0 10px; }