:root {
  --bg: #f4f6fa;
  --surface: #ffffff;
  --surface-2: #f0f2f7;
  --border: #dde2ec;
  --text: #182033;
  --muted: #64708a;
  --primary: #2563eb;
  --primary-ink: #ffffff;
  --primary-soft: #e3ecff;
  --ok: #15803d;
  --ok-soft: #dcfce7;
  --warn: #b45309;
  --warn-soft: #fef3c7;
  --bad: #b91c1c;
  --bad-soft: #fee2e2;
  --shadow: 0 1px 2px rgba(16, 24, 40, .06), 0 4px 12px rgba(16, 24, 40, .05);
  --radius: 12px;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e131c;
    --surface: #161d2a;
    --surface-2: #1d2636;
    --border: #2a3548;
    --text: #e6ebf5;
    --muted: #8d99b3;
    --primary: #4f8cff;
    --primary-ink: #ffffff;
    --primary-soft: #1c2a47;
    --ok: #4ade80;
    --ok-soft: #10301d;
    --warn: #fbbf24;
    --warn-soft: #3a2c0c;
    --bad: #f87171;
    --bad-soft: #3b1515;
    --shadow: 0 1px 2px rgba(0, 0, 0, .3);
    color-scheme: dark;
  }
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
body {
  font: 14px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
}
a { color: var(--primary); text-decoration: none; }
h1 { font-size: 22px; margin: 0; }
h2 { font-size: 17px; margin: 0; }
h3 { font-size: 14px; margin: 0 0 8px; }
code, .mono { font-family: var(--mono); font-size: 12.5px; }
.hidden { display: none !important; }
.muted { color: var(--muted); }
.error { color: var(--bad); min-height: 1em; }
.small { font-size: 12px; }

/* layout */
.layout { display: grid; grid-template-columns: 220px minmax(0, 1fr); min-height: 100vh; }
.sidebar {
  background: var(--surface); border-right: 1px solid var(--border);
  display: flex; flex-direction: column; padding: 18px 12px; position: sticky; top: 0; height: 100vh;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 18px; padding: 0 8px 18px; }
.brand.big { font-size: 24px; justify-content: center; padding-bottom: 6px; }
.logo { width: 28px; height: 28px; border-radius: 8px; background: url(/static/favicon.svg) center/cover; display: inline-block; }
nav { display: flex; flex-direction: column; gap: 2px; }
nav a {
  display: flex; align-items: center; gap: 10px; padding: 8px 10px; border-radius: 8px;
  color: var(--text); font-weight: 500;
}
nav a:hover { background: var(--surface-2); }
nav a.active { background: var(--primary-soft); color: var(--primary); }
.sidebar-foot { margin-top: auto; display: flex; align-items: center; justify-content: space-between; padding: 0 6px; }
main { padding: 26px 30px 60px; max-width: 1200px; width: 100%; min-width: 0; }
.page-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 18px; flex-wrap: wrap; }
.page-head p { margin: 4px 0 0; }

/* icons (CSS mask so they follow currentColor) */
.ico { width: 18px; height: 18px; display: inline-block; background: currentColor; flex: none;
  -webkit-mask: var(--i) center/contain no-repeat; mask: var(--i) center/contain no-repeat; }
.ico-home { --i: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M3 10.5 12 3l9 7.5V21h-6v-6H9v6H3z'/%3E%3C/svg%3E"); }
.ico-cam { --i: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Crect x='2' y='6' width='14' height='12' rx='2'/%3E%3Cpath d='m16 10 6-3v10l-6-3'/%3E%3C/svg%3E"); }
.ico-phone { --i: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M22 16.9v3a2 2 0 0 1-2.2 2 19.8 19.8 0 0 1-8.6-3.1 19.5 19.5 0 0 1-6-6A19.8 19.8 0 0 1 2.1 4.2 2 2 0 0 1 4.1 2h3a2 2 0 0 1 2 1.7c.1 1 .4 1.9.7 2.8a2 2 0 0 1-.5 2.1L8 9.9a16 16 0 0 0 6 6l1.3-1.3a2 2 0 0 1 2.1-.4c.9.3 1.8.6 2.8.7a2 2 0 0 1 1.7 2z'/%3E%3C/svg%3E"); }
.ico-link { --i: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M10 13a5 5 0 0 0 7.5.5l3-3a5 5 0 0 0-7-7l-1.7 1.7'/%3E%3Cpath d='M14 11a5 5 0 0 0-7.5-.5l-3 3a5 5 0 0 0 7 7l1.7-1.7'/%3E%3C/svg%3E"); }
.ico-list { --i: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2' stroke-linecap='round'%3E%3Cpath d='M8 6h13M8 12h13M8 18h13M3 6h.01M3 12h.01M3 18h.01'/%3E%3C/svg%3E"); }
.ico-log { --i: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m4 17 6-6-6-6M12 19h8'/%3E%3C/svg%3E"); }
.ico-gear { --i: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='12' cy='12' r='3'/%3E%3Cpath d='M19.4 15a1.7 1.7 0 0 0 .3 1.8l.1.1a2 2 0 1 1-2.8 2.8l-.1-.1a1.7 1.7 0 0 0-1.8-.3 1.7 1.7 0 0 0-1 1.5V21a2 2 0 1 1-4 0v-.1a1.7 1.7 0 0 0-1.1-1.5 1.7 1.7 0 0 0-1.8.3l-.1.1a2 2 0 1 1-2.8-2.8l.1-.1a1.7 1.7 0 0 0 .3-1.8 1.7 1.7 0 0 0-1.5-1H3a2 2 0 1 1 0-4h.1a1.7 1.7 0 0 0 1.5-1.1 1.7 1.7 0 0 0-.3-1.8l-.1-.1a2 2 0 1 1 2.8-2.8l.1.1a1.7 1.7 0 0 0 1.8.3H9a1.7 1.7 0 0 0 1-1.5V3a2 2 0 1 1 4 0v.1a1.7 1.7 0 0 0 1 1.5 1.7 1.7 0 0 0 1.8-.3l.1-.1a2 2 0 1 1 2.8 2.8l-.1.1a1.7 1.7 0 0 0-.3 1.8V9a1.7 1.7 0 0 0 1.5 1H21a2 2 0 1 1 0 4h-.1a1.7 1.7 0 0 0-1.5 1z'/%3E%3C/svg%3E"); }

/* cards & grids */
.grid { display: grid; gap: 14px; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); }
.tiles { display: grid; gap: 14px; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); margin-bottom: 22px; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); padding: 16px; }
.card h2 { margin-bottom: 4px; }
.card-row { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.card-actions { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 14px; }
.tile .label { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: .04em; font-weight: 600; }
.tile .value { font-size: 26px; font-weight: 700; margin-top: 2px; }
.section { margin-top: 26px; }
.section > h2 { margin-bottom: 10px; }
.kv { display: grid; grid-template-columns: auto 1fr; gap: 3px 14px; margin: 10px 0 0; font-size: 13px; }
.kv dt { color: var(--muted); }
.kv dd { margin: 0; overflow-wrap: anywhere; }
.snapshot { width: 100%; aspect-ratio: 16 / 9; background: var(--surface-2); border-radius: 8px; object-fit: cover; margin-bottom: 12px; display: block; }
.snapshot-wrap { position: relative; }
.snapshot-wrap .ph { position: absolute; inset: 0; display: grid; place-items: center; color: var(--muted); font-size: 12px; }
.empty { text-align: center; padding: 40px 20px; color: var(--muted); background: var(--surface); border: 1px dashed var(--border); border-radius: var(--radius); }
.empty p { margin: 0 0 12px; }

/* badges */
.badge { display: inline-flex; align-items: center; gap: 5px; padding: 1px 9px; border-radius: 999px; font-size: 12px; font-weight: 600; background: var(--surface-2); color: var(--muted); white-space: nowrap; }
.badge::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: currentColor; }
.badge.plain::before { display: none; }
.badge.ok { background: var(--ok-soft); color: var(--ok); }
.badge.warn { background: var(--warn-soft); color: var(--warn); }
.badge.bad { background: var(--bad-soft); color: var(--bad); }
.badge.info { background: var(--primary-soft); color: var(--primary); }
.badges { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; }

/* buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px; border: 1px solid var(--border);
  background: var(--surface); color: var(--text); padding: 7px 13px; border-radius: 8px; font: inherit; font-weight: 600;
  cursor: pointer; white-space: nowrap;
}
.btn:hover { background: var(--surface-2); }
.btn:disabled { opacity: .55; cursor: default; }
.btn.primary { background: var(--primary); border-color: var(--primary); color: var(--primary-ink); }
.btn.primary:hover { filter: brightness(1.07); }
.btn.danger { color: var(--bad); }
.btn.danger.solid { background: var(--bad); color: #fff; border-color: var(--bad); }
.btn.ghost { border-color: transparent; background: transparent; }
.btn.small { padding: 4px 9px; font-size: 12.5px; }
.icon-btn { border: 0; background: transparent; color: var(--muted); font-size: 24px; line-height: 1; cursor: pointer; padding: 0 4px; }
.btn.busy { position: relative; color: transparent !important; }
.btn.busy::after { content: ""; position: absolute; width: 14px; height: 14px; border: 2px solid var(--muted); border-top-color: transparent; border-radius: 50%; animation: spin .7s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* forms */
form .row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
form .row.three { grid-template-columns: 1fr 1fr 1fr; }
label { display: flex; flex-direction: column; gap: 5px; font-weight: 600; font-size: 13px; margin-bottom: 12px; }
label .hint { font-weight: 400; color: var(--muted); font-size: 12px; }
label.check { flex-direction: row; align-items: center; gap: 8px; font-weight: 500; }
input, select, textarea {
  font: inherit; font-weight: 400; color: var(--text); background: var(--surface); border: 1px solid var(--border);
  border-radius: 8px; padding: 8px 10px; width: 100%;
}
input[type=checkbox] { width: auto; }
input:focus, select:focus, textarea:focus { outline: 2px solid var(--primary-soft); border-color: var(--primary); }
fieldset { border: 1px solid var(--border); border-radius: 10px; padding: 12px 14px 2px; margin: 4px 0 14px; }
legend { font-weight: 700; font-size: 13px; padding: 0 6px; }
.form-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 8px; }
.callout { background: var(--primary-soft); border-radius: 10px; padding: 10px 12px; font-size: 13px; margin-bottom: 14px; }
.callout.warn { background: var(--warn-soft); }
.result { border: 1px solid var(--border); border-radius: 10px; padding: 10px 12px; margin: 0 0 14px; font-size: 13px; background: var(--surface-2); }
.dtmf-row { display: grid; grid-template-columns: 60px 80px 1fr auto auto; gap: 6px; align-items: center; margin-bottom: 6px; }
.dtmf-row input, .dtmf-row select { padding: 6px 8px; }

.ivr-row { display: grid; grid-template-columns: 60px 1fr 1.1fr 1fr auto; gap: 6px; align-items: center; margin-bottom: 6px; }
.prompt-field { display: grid; grid-template-columns: 1fr minmax(140px, 38%); gap: 6px; }
input.replaced { opacity: .45; text-decoration: line-through; }
.ivr-row input, .ivr-row select { padding: 6px 8px; }
details.more { margin: 0 0 12px; }
details.more summary { cursor: pointer; font-weight: 600; font-size: 13px; color: var(--primary); margin-bottom: 10px; }

/* tables */
.table-wrap { overflow-x: auto; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { text-align: left; padding: 9px 12px; border-bottom: 1px solid var(--border); white-space: nowrap; }
th { color: var(--muted); font-weight: 600; font-size: 12px; background: var(--surface-2); }
tr:last-child td { border-bottom: 0; }

/* logs */
.logbox { background: #0b1018; color: #cfd8e6; border-radius: var(--radius); padding: 12px; height: calc(100vh - 170px); min-height: 300px; overflow: auto; font-family: var(--mono); font-size: 12px; line-height: 1.55; }
.logbox .l { white-space: pre-wrap; overflow-wrap: anywhere; }
.logbox .t { color: #6b7a93; }
.logbox .WARNING { color: #fbbf24; }
.logbox .ERROR, .logbox .CRITICAL { color: #f87171; }
.logbox .DEBUG { color: #8391a7; }
.toolbar { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.toolbar select, .toolbar input { width: auto; }

/* modal & toasts */
.modal { position: fixed; inset: 0; background: rgba(8, 12, 20, .55); display: flex; align-items: flex-start; justify-content: center; padding: 5vh 16px; z-index: 50; overflow: auto; }
.modal-card { background: var(--surface); border-radius: 14px; width: 100%; max-width: 620px; box-shadow: 0 20px 60px rgba(0, 0, 0, .3); }
.modal-card header { display: flex; justify-content: space-between; align-items: center; padding: 16px 20px; border-bottom: 1px solid var(--border); }
#modal-body { padding: 18px 20px 20px; }
#toasts { position: fixed; right: 18px; bottom: 18px; display: flex; flex-direction: column; gap: 8px; z-index: 60; }
.toast { background: var(--text); color: var(--bg); padding: 10px 14px; border-radius: 10px; box-shadow: var(--shadow); max-width: 380px; font-weight: 500; }
.toast.bad { background: var(--bad); color: #fff; }
.toast.ok { background: var(--ok); color: #fff; }

/* auth */
.auth { min-height: 100vh; display: grid; place-items: center; padding: 16px; }
.auth-card { background: var(--surface); border: 1px solid var(--border); border-radius: 16px; padding: 28px; width: 100%; max-width: 360px; box-shadow: var(--shadow); }
.auth-card p { text-align: center; margin: 0 0 18px; }
.auth-card .btn { width: 100%; margin-top: 4px; }

/* browser call */
.call-layout { display: grid; grid-template-columns: minmax(0, 1fr) 320px; gap: 16px; align-items: start; }
.call-video { position: relative; background: #000; border-radius: var(--radius); overflow: hidden; aspect-ratio: 16 / 9; }
.call-video video, .call-video img { width: 100%; height: 100%; object-fit: contain; display: block; }
.call-overlay { position: absolute; inset: 0; display: grid; place-items: center; color: #cfd8e6; background: rgba(0, 0, 0, .55); font-weight: 600; text-align: center; padding: 16px; }
.call-side { display: flex; flex-direction: column; gap: 12px; }
.call-side label { margin-bottom: 0; }
.call-side input[type=range] { padding: 0; }
.ptt {
  width: 100%; min-height: 120px; border-radius: 16px; border: 2px solid var(--primary); background: var(--primary-soft);
  color: var(--primary); font: inherit; font-size: 18px; font-weight: 700; cursor: pointer; display: flex; flex-direction: column;
  align-items: center; justify-content: center; gap: 4px; user-select: none; -webkit-user-select: none; touch-action: none;
}
.ptt small { font-size: 12px; font-weight: 500; opacity: .8; }
.ptt.active { background: var(--bad); border-color: var(--bad); color: #fff; }
.ptt.open:not(.active) { background: var(--ok-soft); border-color: var(--ok); color: var(--ok); }
.ptt:disabled { opacity: .5; cursor: default; }
.meter { display: grid; grid-template-columns: 62px 1fr; align-items: center; gap: 8px; font-size: 12px; color: var(--muted); font-weight: 600; }
.meter .bar { height: 8px; background: var(--surface-2); border-radius: 99px; overflow: hidden; }
.meter i { display: block; height: 100%; width: 0; background: var(--ok); transition: width .1s linear; }

.pulse { animation: pulse 1.4s ease-in-out infinite; }
@keyframes pulse { 50% { opacity: .45; } }

@media (max-width: 800px) {
  .layout { grid-template-columns: minmax(0, 1fr); }
  .sidebar { position: static; height: auto; flex-direction: row; flex-wrap: wrap; align-items: center; padding: 10px 12px; gap: 6px; }
  .brand { padding: 0 8px 0 4px; }
  nav { flex-direction: row; flex-wrap: wrap; width: 100%; order: 3; }
  nav a { padding: 6px 8px; font-size: 13px; }
  .sidebar-foot { margin: 0 0 0 auto; }
  main { padding: 18px 16px 50px; }
  form .row, form .row.three { grid-template-columns: 1fr; }
  .dtmf-row { grid-template-columns: 50px 70px 1fr; }
  .call-layout { grid-template-columns: minmax(0, 1fr); }
  .ivr-row { grid-template-columns: 56px 1fr auto; }
  .ivr-row input, .ivr-row select[data-f=sound] { grid-column: 1 / -1; }
  .prompt-field { grid-template-columns: 1fr; }
}