:root {
  --bg: #0f1115;
  --panel: #171a21;
  --panel-2: #1e222b;
  --line: #2a2f3a;
  --text: #e8eaed;
  --muted: #9aa3b2;
  --accent: #ff7a18;
  --accent-dim: #cc6214;
  --ok: #35c17a;
  --warn: #e5b544;
  --bad: #e5645a;
  --radius: 10px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

h1, h2, h3 { margin: 0 0 .35em; font-weight: 600; letter-spacing: -.01em; }
h2 { font-size: 1.25rem; }
h3 { font-size: 1rem; margin-top: 2rem; }
p { margin: 0 0 .6em; }
.muted { color: var(--muted); font-size: .9rem; }
.error { color: var(--bad); }

/* ---------------------------------------------------------------- chrome */
.topbar {
  display: flex; align-items: center; gap: 1rem;
  padding: .85rem 1.25rem;
  background: var(--panel);
  border-bottom: 1px solid var(--line);
  position: sticky; top: 0; z-index: 10;
}
.brand { display: flex; align-items: baseline; gap: .5rem; }
.brand strong { color: var(--accent); }
.pills { display: flex; gap: .5rem; flex: 1; flex-wrap: wrap; }

.pill {
  font-size: .78rem; padding: .2rem .6rem; border-radius: 999px;
  background: var(--panel-2); border: 1px solid var(--line); color: var(--muted);
  white-space: nowrap;
}
.pill.ok { color: var(--ok); border-color: color-mix(in srgb, var(--ok) 40%, var(--line)); }
.pill.warn { color: var(--warn); border-color: color-mix(in srgb, var(--warn) 40%, var(--line)); }
.pill.bad { color: var(--bad); border-color: color-mix(in srgb, var(--bad) 45%, var(--line)); }

.tabs { display: flex; gap: .25rem; padding: .75rem 1.25rem 0; border-bottom: 1px solid var(--line); flex-wrap: wrap; }
.tab {
  background: none; border: none; border-bottom: 2px solid transparent;
  color: var(--muted); padding: .5rem .8rem; cursor: pointer; font-size: .95rem;
}
.tab.active { color: var(--text); border-bottom-color: var(--accent); }

main { padding: 1.5rem 1.25rem 4rem; max-width: 1100px; margin: 0 auto; }
.panel { display: none; }
.panel.active { display: block; }
.panel-head { display: flex; gap: 1rem; align-items: flex-start; justify-content: space-between; flex-wrap: wrap; margin-bottom: 1.25rem; }
.panel-head p { max-width: 60ch; }
.actions { display: flex; gap: .5rem; align-items: center; flex-wrap: wrap; }

/* --------------------------------------------------------------- inputs */
button {
  background: var(--panel-2); color: var(--text);
  border: 1px solid var(--line); border-radius: var(--radius);
  padding: .5rem .9rem; cursor: pointer; font-size: .9rem;
}
button:hover { border-color: #3b4250; }
button.primary { background: var(--accent); border-color: var(--accent); color: #1a1206; font-weight: 600; }
button.primary:hover { background: var(--accent-dim); }
button.danger { color: var(--bad); }
button.link { background: none; border: none; color: var(--muted); text-decoration: underline; padding: 0; }
button:disabled { opacity: .5; cursor: not-allowed; }

input, select {
  background: #12151b; color: var(--text);
  border: 1px solid var(--line); border-radius: 8px;
  padding: .45rem .6rem; font: inherit; font-size: .9rem;
}
input:focus, select:focus { outline: 2px solid var(--accent-dim); outline-offset: 1px; }
input.tiny { width: 5.5rem; }

.field { display: block; margin: 0 0 1rem; }
.field > span { display: block; font-size: .85rem; color: var(--muted); margin-bottom: .25rem; }
.field input, .field select { width: 100%; max-width: 22rem; }
.field small { display: block; margin-top: .25rem; }

.inline { display: inline-flex; align-items: center; gap: .4rem; font-size: .85rem; color: var(--muted); }

/* ---------------------------------------------------------------- cards */
.card {
  background: var(--panel); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 1.1rem; margin-bottom: 1rem;
}
.card-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 1rem; margin-bottom: .9rem; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: .9rem; }

.days { display: flex; gap: .35rem; flex-wrap: wrap; }
.day {
  border: 1px solid var(--line); border-radius: 999px; padding: .3rem .55rem;
  cursor: pointer; font-size: .8rem; color: var(--muted); user-select: none;
  background: #12151b;
}
.day.on { background: var(--accent); border-color: var(--accent); color: #1a1206; font-weight: 600; }

.sessions { display: flex; flex-direction: column; align-items: flex-start; gap: .5rem; margin-top: .3rem; }
.sessions > .session-row { align-self: stretch; }
.session-row { display: flex; gap: .5rem; align-items: center; }
.session-row input[type=text] { flex: 1; min-width: 8rem; }
.session-row input[type=number] { width: 5rem; }

details.advanced { margin-top: .9rem; border-top: 1px dashed var(--line); padding-top: .7rem; }
details.advanced summary { cursor: pointer; color: var(--muted); font-size: .85rem; }
details.advanced .grid { margin-top: .8rem; }

/* -------------------------------------------------------------- results */
.results { display: flex; flex-direction: column; gap: .75rem; }
.empty { color: var(--muted); padding: 2rem; text-align: center; border: 1px dashed var(--line); border-radius: var(--radius); }

.summary {
  display: flex; gap: 1.25rem; flex-wrap: wrap;
  background: var(--panel); border: 1px solid var(--line);
  border-radius: var(--radius); padding: .8rem 1.1rem; align-items: center;
}
.summary .stat { display: flex; flex-direction: column; }
.summary .stat b { font-size: 1.15rem; }
.summary .stat span { font-size: .75rem; color: var(--muted); text-transform: uppercase; letter-spacing: .04em; }
.summary .spacer { flex: 1; }

.video {
  background: var(--panel); border: 1px solid var(--line);
  border-left: 3px solid var(--line); border-radius: var(--radius); padding: 1rem;
}
.video.ready { border-left-color: var(--accent); }
.video.done { border-left-color: var(--ok); }
.video.attention { border-left-color: var(--warn); }
.video.bad { border-left-color: var(--bad); }
.video-head { display: flex; justify-content: space-between; gap: 1rem; align-items: flex-start; flex-wrap: wrap; }
.video-title { font-weight: 600; }
.video-meta { font-size: .82rem; color: var(--muted); margin-top: .15rem; }
.video-meta a { color: var(--muted); }

.chapter-block {
  margin: .8rem 0 0; padding: .7rem .9rem; background: #0c0e12;
  border: 1px solid var(--line); border-radius: 8px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: .84rem;
  white-space: pre-wrap; color: #cfd6e2;
}
.note { margin-top: .7rem; font-size: .86rem; color: var(--warn); }

.badge {
  font-size: .72rem; text-transform: uppercase; letter-spacing: .05em;
  padding: .2rem .5rem; border-radius: 6px; background: var(--panel-2); color: var(--muted);
  border: 1px solid var(--line); white-space: nowrap;
}
.badge.ready { color: var(--accent); border-color: var(--accent); }
.badge.done { color: var(--ok); border-color: color-mix(in srgb, var(--ok) 50%, var(--line)); }
.badge.attention { color: var(--warn); border-color: color-mix(in srgb, var(--warn) 50%, var(--line)); }
.badge.bad { color: var(--bad); border-color: color-mix(in srgb, var(--bad) 50%, var(--line)); }

/* ---------------------------------------------------------------- toast */
.toast {
  position: fixed; bottom: 1.25rem; left: 50%; transform: translateX(-50%) translateY(200%);
  background: var(--panel-2); border: 1px solid var(--line); color: var(--text);
  padding: .7rem 1.1rem; border-radius: var(--radius); transition: transform .2s ease;
  max-width: 90vw; z-index: 50; visibility: hidden;
}
.toast.show { transform: translateX(-50%) translateY(0); visibility: visible; }
.toast.bad { border-color: var(--bad); color: var(--bad); }
.toast.ok { border-color: var(--ok); }

/* ---------------------------------------------------------------- login */
.login-body { display: grid; place-items: center; min-height: 100vh; }
.login-card {
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 2rem; width: min(340px, 90vw); display: flex; flex-direction: column; gap: .5rem;
}
.login-card h1 { color: var(--accent); font-size: 1.3rem; margin: 0; }
.login-card label { font-size: .85rem; color: var(--muted); margin-top: .8rem; }
.login-card button { margin-top: 1rem; background: var(--accent); border-color: var(--accent); color: #1a1206; font-weight: 600; }