/* PingDiary — стили. Тёмная тема по умолчанию, светлая через [data-theme="light"]. */

:root {
  --bg:        #0c0f16;
  --bg-soft:   #121724;
  --card:      #151b2b;
  --card-2:    #1b2234;
  --line:      #263048;
  --text:      #e8ecf6;
  --muted:     #8e9ab5;
  --accent:    #4dd4ac;
  --accent-2:  #6b8cff;
  --down:      #4dd4ac;
  --up:        #6b8cff;
  --ping:      #ffc861;
  --jitter:    #ff7b91;
  --danger:    #ff6b81;
  --shadow:    0 10px 30px rgba(0,0,0,.35);
  --radius:    16px;
}

[data-theme="light"] {
  --bg:        #f3f5fa;
  --bg-soft:   #e9edf6;
  --card:      #ffffff;
  --card-2:    #f4f6fc;
  --line:      #dbe1ee;
  --text:      #141a28;
  --muted:     #66718c;
  --accent:    #12a97f;
  --accent-2:  #3d63e0;
  --down:      #12a97f;
  --up:        #3d63e0;
  --ping:      #d18a00;
  --jitter:    #e0475f;
  --danger:    #dc3a55;
  --shadow:    0 10px 26px rgba(20,30,60,.10);
}

* { box-sizing: border-box; }

html, body { height: 100%; }

body {
  margin: 0;
  background:
    radial-gradient(1100px 620px at 78% -12%, color-mix(in srgb, var(--accent) 13%, transparent), transparent 60%),
    radial-gradient(900px 520px at 8% 0%, color-mix(in srgb, var(--accent-2) 12%, transparent), transparent 55%),
    var(--bg);
  color: var(--text);
  font: 15px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

/* ------------------------------ шапка ------------------------------ */

.topbar {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 14px 22px;
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: blur(10px);
  position: sticky;
  top: 0;
  z-index: 20;
  flex-wrap: wrap;
}

.brand {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -.02em;
}
.brand b { font-weight: 600; color: var(--accent); }
.brand-mark { width: 26px; height: 26px; color: var(--accent); }

.tabs { display: flex; gap: 4px; margin-left: 10px; }

.tab {
  border: 0;
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-weight: 500;
  padding: 8px 14px;
  border-radius: 10px;
  cursor: pointer;
  transition: background .15s, color .15s;
}
.tab:hover { color: var(--text); background: var(--card-2); }
.tab.is-active { color: var(--text); background: var(--card); box-shadow: inset 0 0 0 1px var(--line); }

.topbar-actions { margin-left: auto; display: flex; gap: 8px; }

.icon-btn {
  width: 36px; height: 36px;
  display: grid; place-items: center;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: var(--card);
  color: var(--muted);
  cursor: pointer;
  transition: color .15s, border-color .15s;
}
.icon-btn:hover { color: var(--text); border-color: var(--accent); }
.lang-btn { font: 600 12px/1 inherit; letter-spacing: .06em; }

/* ------------------------------ каркас ------------------------------ */

main { max-width: 1180px; margin: 0 auto; padding: 26px 22px 60px; }

.view { display: none; animation: fade .22s ease; }
.view.is-active { display: block; }

@keyframes fade { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: var(--shadow);
}
/* Отступ только между карточками, лежащими друг под другом в разделе:
   внутри сеток (.metrics, .stack) расстояние задаёт gap. */
.view > .card + .card { margin-top: 18px; }

.card-title {
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .07em;
  color: var(--muted);
  margin-bottom: 14px;
}

.muted { color: var(--muted); }
.spacer { flex: 1; }

/* ------------------------------ вкладка «Тест» ------------------------------ */

.test-layout {
  display: grid;
  grid-template-columns: minmax(320px, 400px) 1fr;
  gap: 18px;
  align-items: start;
}

.stack { display: grid; gap: 18px; }

.gauge-card { display: grid; justify-items: center; gap: 18px; }

.gauge { position: relative; width: 100%; max-width: 300px; aspect-ratio: 1; }
.gauge-svg { width: 100%; height: 100%; transform: rotate(-90deg); }

.gauge-track {
  fill: none;
  stroke: var(--card-2);
  stroke-width: 14;
}
.gauge-fill {
  fill: none;
  stroke: var(--accent);
  stroke-width: 14;
  stroke-linecap: round;
  stroke-dasharray: 527.8;      /* 2πr, r = 84 */
  stroke-dashoffset: 527.8;
  transition: stroke-dashoffset .25s ease, stroke .3s ease;
}
.gauge[data-phase="upload"] .gauge-fill { stroke: var(--up); }
.gauge[data-phase="latency"] .gauge-fill { stroke: var(--ping); }

.gauge-center {
  position: absolute;
  inset: 0;
  display: grid;
  place-content: center;
  text-align: center;
  gap: 2px;
}
.gauge-phase {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: .09em;
  color: var(--muted);
  min-height: 16px;
}
.gauge-value {
  font-size: clamp(38px, 8vw, 52px);
  font-weight: 650;
  letter-spacing: -.03em;
  font-variant-numeric: tabular-nums;
  line-height: 1.05;
}
.gauge-unit { font-size: 13px; color: var(--muted); }

.btn {
  border: 1px solid var(--line);
  background: var(--card-2);
  color: var(--text);
  font: inherit;
  font-weight: 500;
  padding: 9px 16px;
  border-radius: 10px;
  cursor: pointer;
  transition: border-color .15s, background .15s, opacity .15s;
}
.btn:hover:not(:disabled) { border-color: var(--accent); }
.btn:disabled { opacity: .45; cursor: not-allowed; }

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border-color: transparent;
  color: #06121a;
  font-weight: 650;
}
[data-theme="light"] .btn-primary { color: #fff; }
.btn-primary:hover:not(:disabled) { filter: brightness(1.07); }

.btn-danger { color: var(--danger); }
.btn-danger:hover:not(:disabled) { border-color: var(--danger); }

.btn-start { width: 100%; max-width: 300px; padding: 13px; font-size: 16px; }
.btn-start.is-running { background: var(--card-2); color: var(--danger); border-color: var(--danger); }

.run-meta { width: 100%; max-width: 300px; display: grid; gap: 10px; }

.input {
  width: 100%;
  background: var(--card-2);
  border: 1px solid var(--line);
  border-radius: 10px;
  color: var(--text);
  font: inherit;
  padding: 9px 12px;
  outline: none;
  transition: border-color .15s;
}
.input:focus { border-color: var(--accent); }
.select { cursor: pointer; }
.select option { background: var(--card); color: var(--text); }

.check { display: flex; align-items: center; gap: 8px; font-size: 14px; color: var(--muted); cursor: pointer; }
.check input { accent-color: var(--accent); width: 16px; height: 16px; }

.metrics { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }

.metric { padding: 14px; display: grid; gap: 2px; }
.metric-head { display: flex; align-items: center; gap: 7px; font-size: 13px; color: var(--muted); }
.metric-value {
  font-size: 26px;
  font-weight: 650;
  letter-spacing: -.02em;
  font-variant-numeric: tabular-nums;
}
.metric-unit { font-size: 12px; color: var(--muted); }

.dot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; }
.dot-down { background: var(--down); }
.dot-up { background: var(--up); }
.dot-ping { background: var(--ping); }
.dot-jit { background: var(--jitter); }

.live-chart { width: 100%; height: 200px; display: block; }
.history-chart { width: 100%; height: 300px; display: block; }
.hour-chart { width: 100%; height: 220px; display: block; }

.legend { display: flex; gap: 16px; font-size: 13px; color: var(--muted); margin-top: 8px; }
.legend-item { display: flex; align-items: center; gap: 7px; }
.sw { width: 14px; height: 3px; border-radius: 2px; }
.sw-down { background: var(--down); }
.sw-up { background: var(--up); }

.kv { margin: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 12px; }
.kv div { display: grid; gap: 2px; }
.kv dt { font-size: 12px; color: var(--muted); }
.kv dd { margin: 0; font-weight: 500; overflow-wrap: anywhere; }

/* Видно поисковикам и скринридерам, не видно глазом. */
.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  margin: -1px; padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

/* ------------------- пояснительный блок под тестом ------------------- */

.about { margin-top: 26px; }

.about-title {
  font-size: 20px;
  font-weight: 600;
  letter-spacing: -.02em;
  margin: 0 0 14px;
}

.about-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(420px, 1fr));
  gap: 14px;
}

.about-grid article {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
}
.about-grid h2 { font-size: 15px; font-weight: 600; margin: 0 0 6px; }
.about-grid p { margin: 0; font-size: 14px; color: var(--muted); }

/* ------------------------------ дневник ------------------------------ */

.toolbar { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; margin-bottom: 14px; }
.toolbar .input { width: auto; min-width: 190px; }

.table-wrap { overflow-x: auto; border-radius: 12px; border: 1px solid var(--line); }

.table { width: 100%; border-collapse: collapse; font-size: 14px; white-space: nowrap; }
.table th, .table td { padding: 11px 12px; text-align: left; border-bottom: 1px solid var(--line); }
.table th {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .05em;
  color: var(--muted);
  background: var(--card-2);
  position: sticky;
  top: 0;
}
.table tbody tr:last-child td { border-bottom: 0; }
.table tbody tr:hover { background: var(--card-2); }
.table .num { text-align: right; font-variant-numeric: tabular-nums; }
.table .th-check, .table .td-check { width: 40px; }
.table input[type="checkbox"] { accent-color: var(--accent); width: 16px; height: 16px; }

.tag {
  display: inline-block;
  padding: 2px 9px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--accent) 16%, transparent);
  color: var(--accent);
  font-size: 12px;
  font-weight: 550;
}

.row-del {
  border: 0;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font-size: 16px;
  line-height: 1;
  padding: 2px 6px;
  border-radius: 6px;
}
.row-del:hover { color: var(--danger); background: color-mix(in srgb, var(--danger) 14%, transparent); }

.empty { padding: 34px; text-align: center; color: var(--muted); }

.hist-foot { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-top: 14px; flex-wrap: wrap; }

/* ------------------------------ сравнение ------------------------------ */

.cmp-pickers { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-bottom: 18px; }
.field { display: grid; gap: 6px; font-size: 13px; color: var(--muted); }

.cmp-grid { display: grid; gap: 12px; }

.cmp-row {
  display: grid;
  grid-template-columns: 130px 1fr 110px;
  gap: 14px;
  align-items: center;
  padding: 12px 14px;
  background: var(--card-2);
  border-radius: 12px;
}
.cmp-name { font-size: 14px; color: var(--muted); }

.cmp-bars { display: grid; gap: 7px; }
.cmp-bar { display: grid; grid-template-columns: 22px 1fr auto; gap: 10px; align-items: center; font-size: 13px; }
.cmp-bar-track { height: 10px; background: var(--card); border-radius: 999px; overflow: hidden; }
.cmp-bar-fill { height: 100%; border-radius: 999px; transition: width .4s ease; }
.cmp-bar-val { font-variant-numeric: tabular-nums; min-width: 78px; text-align: right; }

.delta { font-weight: 650; font-variant-numeric: tabular-nums; text-align: right; }
.delta.up { color: var(--accent); }
.delta.down { color: var(--danger); }
.delta.same { color: var(--muted); }

.cmp-heads { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-bottom: 14px; }
.cmp-head {
  padding: 14px;
  border-radius: 12px;
  background: var(--card-2);
  border: 1px solid var(--line);
}
.cmp-head .h-date { font-weight: 600; }
.cmp-head .h-sub { font-size: 13px; color: var(--muted); margin-top: 3px; }

.groups { display: grid; gap: 10px; }
.group-row {
  display: grid;
  grid-template-columns: minmax(120px, 1fr) 2fr auto;
  gap: 14px;
  align-items: center;
  padding: 12px 14px;
  background: var(--card-2);
  border-radius: 12px;
}
.group-name { font-weight: 550; }
.group-count { font-size: 12px; color: var(--muted); }

/* ------------------------------ статистика ------------------------------ */

.segmented { display: flex; background: var(--card-2); border-radius: 10px; padding: 3px; gap: 2px; }
.seg {
  border: 0;
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-size: 14px;
  padding: 7px 14px;
  border-radius: 8px;
  cursor: pointer;
}
.seg.is-active { background: var(--card); color: var(--text); box-shadow: 0 1px 4px rgba(0,0,0,.2); }

.summary { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 14px; margin-top: 18px; }
.sum-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
}
.sum-label { font-size: 12px; color: var(--muted); text-transform: uppercase; letter-spacing: .06em; }
.sum-value { font-size: 24px; font-weight: 650; letter-spacing: -.02em; margin-top: 6px; font-variant-numeric: tabular-nums; }
.sum-sub { font-size: 12px; color: var(--muted); margin-top: 2px; }

/* SVG-графики */
.axis-line { stroke: var(--line); stroke-width: 1; }
.axis-text { fill: var(--muted); font-size: 11px; }
.grid-line { stroke: var(--line); stroke-width: 1; stroke-dasharray: 3 5; opacity: .6; }
.chart-point { cursor: pointer; }
.chart-hint { fill: var(--muted); font-size: 12px; }

/* ------------------------------ прочее ------------------------------ */

.footer {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 22px 40px;
  display: flex;
  gap: 12px;
  justify-content: space-between;
  flex-wrap: wrap;
  font-size: 13px;
  color: var(--muted);
}
.footer a { color: var(--muted); }
.footer a:hover { color: var(--accent); }

.toast {
  position: fixed;
  left: 50%;
  bottom: 26px;
  transform: translateX(-50%);
  background: var(--card);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  padding: 11px 18px;
  border-radius: 12px;
  font-size: 14px;
  z-index: 50;
  animation: toast-in .2s ease;
}
.toast.is-error { border-color: var(--danger); color: var(--danger); }

@keyframes toast-in { from { opacity: 0; transform: translate(-50%, 10px); } to { opacity: 1; transform: translate(-50%, 0); } }

/* ------------------------------ адаптив ------------------------------ */

@media (max-width: 900px) {
  .test-layout { grid-template-columns: 1fr; }
  .metrics { grid-template-columns: repeat(2, 1fr); }
  .cmp-pickers, .cmp-heads { grid-template-columns: 1fr; }
  .cmp-row { grid-template-columns: 100px 1fr; }
  .cmp-row .delta { grid-column: 2; text-align: left; }
  .tabs { order: 3; width: 100%; overflow-x: auto; margin-left: 0; }
  .topbar { padding: 12px 16px; }
  main { padding: 18px 16px 50px; }
}