/* Thor v2 design system */
:root {
  --bg: #0b0f17;
  --bg-grad: radial-gradient(1200px 600px at 80% -10%, #16233f 0%, transparent 60%),
             radial-gradient(900px 500px at -10% 110%, #131c30 0%, transparent 55%);
  --panel: #121826;
  --panel-2: #1a2234;
  --border: #232d42;
  --text: #e8edf7;
  --muted: #8b96ab;
  --accent: #4f8cff;
  --accent-soft: rgba(79, 140, 255, 0.14);
  --gold: #ffb02e;
  --success: #3ddc84;
  --danger: #ff5d5d;
  --warn: #ffb02e;
  --radius: 14px;
  --shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
  --font: ui-sans-serif, system-ui, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
}

* { box-sizing: border-box; }
html { scrollbar-color: #2a3550 var(--bg); }
body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  background-image: var(--bg-grad);
  background-attachment: fixed;
  color: var(--text);
  min-height: 100vh;
  line-height: 1.5;
}

/* --- Nav --- */
.nav {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; gap: 4px;
  padding: 10px 20px;
  background: rgba(11, 15, 23, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  overflow-x: auto;
}
.nav .brand {
  display: flex; align-items: center; gap: 8px;
  font-weight: 800; font-size: 17px; letter-spacing: 0.4px;
  margin-right: 18px; color: var(--text); text-decoration: none; white-space: nowrap;
}
.nav .brand .bolt { color: var(--gold); font-size: 20px; }
.nav a.link {
  color: var(--muted); text-decoration: none; font-size: 14px; font-weight: 600;
  padding: 7px 12px; border-radius: 9px; white-space: nowrap; transition: 0.15s;
}
.nav a.link:hover { color: var(--text); background: var(--panel-2); }
.nav a.link.active { color: var(--accent); background: var(--accent-soft); }
.nav .spacer { flex: 1; }

/* --- Layout --- */
.container { max-width: 1100px; margin: 0 auto; padding: 24px 20px 80px; }
.page-head { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; flex-wrap: wrap; margin: 6px 0 20px; }
.page-head h1 { font-size: 26px; margin: 0; letter-spacing: -0.3px; }
.page-head .sub { color: var(--muted); font-size: 14px; }
.grid { display: grid; gap: 16px; }
.grid.cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid.cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid.cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
@media (max-width: 900px) { .grid.cols-3, .grid.cols-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 640px) { .grid.cols-2, .grid.cols-3, .grid.cols-4 { grid-template-columns: 1fr; } }

/* --- Cards --- */
.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: var(--shadow);
}
.card h2 { font-size: 15px; margin: 0 0 12px; color: var(--muted); font-weight: 700; text-transform: uppercase; letter-spacing: 0.8px; }
.card h2 .accent { color: var(--gold); }
.stat { font-size: 28px; font-weight: 800; letter-spacing: -0.5px; }
.stat small { font-size: 13px; color: var(--muted); font-weight: 600; margin-left: 4px; }
.stat-label { color: var(--muted); font-size: 13px; margin-top: 2px; }

/* --- Forms --- */
input, textarea, select {
  width: 100%; background: var(--panel-2); border: 1px solid var(--border);
  color: var(--text); border-radius: 10px; padding: 10px 12px; font-size: 14px; font-family: var(--font);
}
input:focus, textarea:focus, select:focus { outline: 2px solid var(--accent); outline-offset: -1px; border-color: transparent; }
textarea { resize: vertical; min-height: 70px; }
label { display: block; font-size: 12px; font-weight: 700; color: var(--muted); margin: 10px 0 5px; text-transform: uppercase; letter-spacing: 0.6px; }
.row { display: flex; gap: 10px; align-items: end; flex-wrap: wrap; }
.row > * { flex: 1; min-width: 120px; }
.row > .fit { flex: 0 0 auto; min-width: 0; }

button, .btn {
  background: var(--accent); color: #fff; border: none; border-radius: 10px;
  padding: 10px 16px; font-size: 14px; font-weight: 700; cursor: pointer; font-family: var(--font);
  transition: 0.15s; display: inline-flex; align-items: center; gap: 6px; text-decoration: none;
}
button:hover, .btn:hover { filter: brightness(1.12); }
button:disabled { opacity: 0.5; cursor: wait; }
.btn-ghost { background: var(--panel-2); color: var(--text); border: 1px solid var(--border); }
.btn-danger { background: transparent; color: var(--danger); border: 1px solid var(--danger); padding: 6px 10px; font-size: 12px; }
.btn-sm { padding: 6px 10px; font-size: 12px; }
.btn-gold { background: var(--gold); color: #22190a; }

/* --- Lists / tables --- */
.list { display: flex; flex-direction: column; gap: 10px; }
.item {
  background: var(--panel-2); border: 1px solid var(--border); border-radius: 12px;
  padding: 12px 14px; display: flex; justify-content: space-between; align-items: center; gap: 12px;
}
.item .main { flex: 1; min-width: 0; }
.item .title { font-weight: 700; font-size: 14px; }
.item .meta { color: var(--muted); font-size: 12.5px; margin-top: 2px; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th { text-align: left; color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: 0.6px; padding: 8px 10px; border-bottom: 1px solid var(--border); }
td { padding: 9px 10px; border-bottom: 1px solid var(--border); }
tr:last-child td { border-bottom: none; }

/* --- Badges / pills --- */
.pill {
  display: inline-flex; align-items: center; gap: 5px; border-radius: 999px;
  padding: 3px 10px; font-size: 12px; font-weight: 700;
  background: var(--accent-soft); color: var(--accent);
}
.pill.gold { background: rgba(255, 176, 46, 0.14); color: var(--gold); }
.pill.green { background: rgba(61, 220, 132, 0.13); color: var(--success); }
.pill.red { background: rgba(255, 93, 93, 0.13); color: var(--danger); }
.pill.gray { background: rgba(139, 150, 171, 0.14); color: var(--muted); }

/* --- Progress bars --- */
.bar-wrap { margin: 10px 0; }
.bar-head { display: flex; justify-content: space-between; font-size: 13px; margin-bottom: 5px; }
.bar-head .val { color: var(--muted); font-variant-numeric: tabular-nums; }
.bar { height: 8px; background: var(--panel-2); border-radius: 99px; overflow: hidden; }
.bar > span { display: block; height: 100%; border-radius: 99px; background: var(--accent); transition: width 0.4s ease; }
.bar > span.over { background: var(--danger); }
.bar > span.good { background: var(--success); }

/* --- Chat --- */
.chat-box { display: flex; flex-direction: column; height: calc(100vh - 210px); min-height: 420px; }
.chat-log { flex: 1; overflow-y: auto; display: flex; flex-direction: column; gap: 12px; padding: 4px 2px 12px; }
.msg { max-width: 82%; padding: 11px 14px; border-radius: 14px; font-size: 14.5px; white-space: pre-wrap; word-wrap: break-word; }
.msg.user { align-self: flex-end; background: var(--accent); color: #fff; border-bottom-right-radius: 4px; }
.msg.bot { align-self: flex-start; background: var(--panel-2); border: 1px solid var(--border); border-bottom-left-radius: 4px; }
.msg.bot .tools { margin-top: 8px; display: flex; gap: 6px; flex-wrap: wrap; }
.chat-input { display: flex; gap: 10px; padding-top: 12px; }
.chat-input textarea { min-height: 48px; max-height: 140px; }

/* --- Markdown --- */
.md h2 { font-size: 16px; margin: 18px 0 8px; color: var(--gold); }
.md h2:first-child { margin-top: 0; }
.md h3 { font-size: 14px; margin: 14px 0 6px; }
.md p { margin: 6px 0; font-size: 14.5px; }
.md li { font-size: 14.5px; margin: 3px 0; }
.md strong { color: var(--gold); }
.md ul { padding-left: 20px; margin: 6px 0; }

/* --- Toast --- */
#toast {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%) translateY(20px);
  background: var(--panel-2); border: 1px solid var(--border); color: var(--text);
  border-radius: 12px; padding: 12px 20px; font-size: 14px; font-weight: 600;
  opacity: 0; pointer-events: none; transition: 0.25s; z-index: 100; box-shadow: var(--shadow);
  max-width: 90vw;
}
#toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
#toast.error { border-color: var(--danger); color: var(--danger); }

/* --- Quick log (mid-workout) --- */
.plan-item { cursor: pointer; user-select: none; min-height: 52px; transition: 0.12s; }
.plan-item:hover { border-color: var(--accent); }
.plan-item:active { transform: scale(0.99); }
.quick-form {
  background: var(--accent-soft);
  border: 1px solid var(--accent);
  border-radius: 12px;
  padding: 12px 14px;
  animation: pop 0.15s ease;
}
@keyframes pop { from { opacity: 0; transform: translateY(-4px); } }

/* --- Water tracker --- */
.water-glasses { display: flex; flex-wrap: wrap; gap: 7px; }
.water-glasses .glass {
  width: 26px; height: 32px; border-radius: 4px 4px 8px 8px;
  border: 2px solid var(--border); background: var(--panel-2);
  cursor: pointer; transition: 0.15s; position: relative; overflow: hidden;
}
.water-glasses .glass:hover { border-color: var(--accent); transform: translateY(-2px); }
.water-glasses .glass.full {
  border-color: var(--accent);
  background: linear-gradient(to top, var(--accent) 0%, var(--accent) 78%, color-mix(in srgb, var(--accent) 45%, transparent) 100%);
}
.water-glasses .glass.over { border-color: var(--gold); background: var(--gold); }

/* --- Charts --- */
.chart-card svg { display: block; margin-top: 6px; }
.chart-card select { width: auto; }

.muted { color: var(--muted); }
.small { font-size: 12.5px; }
.mt { margin-top: 14px; }
.mb { margin-bottom: 14px; }
.center { text-align: center; }
.empty { color: var(--muted); text-align: center; padding: 26px 10px; font-size: 14px; }
.spin { display: inline-block; animation: spin 0.9s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
details summary { cursor: pointer; color: var(--muted); font-size: 13px; font-weight: 600; }