/* ========================
   THEME TOKENS
======================== */
:root {
  color-scheme: dark;
  --bg: #0b1020;
  --text: #e5e7eb;
  --muted: #94a3b8;
  --accent: #22c55e;
  --card: rgba(17, 24, 39, 0.75);
  --card-strong: rgba(17, 24, 39, 0.95);
  --border: rgba(148,163,184,.25);
  --ring: rgba(99,102,241,.35);
  --shadow: 0 10px 25px rgba(2,6,23,.35);
  --neutral: #9aa3af;
}

:root[data-theme="light"] {
  color-scheme: light;
  --bg: #f6f7fb;
  --text: #0f172a;
  --muted: #475569;
  --accent: #0ea5e9;
  --card: rgba(255,255,255,0.86);
  --card-strong: rgba(255,255,255,0.98);
  --border: #e2e8f0;
  --ring: rgba(14,165,233,.25);
  --shadow: 0 10px 25px rgba(2,6,23,.10);
  --neutral: #64748b;
}

/* Background + effects */
html, body {
  height: 100%;
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  transition: background-color .25s ease, color .25s ease;
}

/* grid lines */
body::before{
  content:"";
  position: fixed; inset: 0;
  background-image:
    linear-gradient(transparent 0, rgba(255,255,255,.05) 1px, transparent 1px),
    linear-gradient(90deg, transparent 0, rgba(255,255,255,.05) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events:none;
  z-index: 0;
  opacity:.35;
}

/* aurora */
body::after{
  content:"";
  position: fixed; inset: 0;
  background:
    radial-gradient(900px 380px at 85% 90%, rgba(99,102,241,.28), transparent 60%),
    radial-gradient(1000px 420px at 15% 8%, rgba(34,197,94,.22), transparent 60%);
  filter: blur(42px);
  pointer-events: none;
  z-index: 0;
  opacity:.85;
}

/* Content above effects */
.wrap { position: relative; z-index: 1; max-width:1100px; margin: 28px auto; padding: 0 16px; }

/* Top */
.topbar{ display:flex; align-items:flex-start; justify-content:space-between; gap:1rem; margin-bottom:16px; }
.brand h1{ margin:0 0 .25rem 0; font-size:1.5rem; }
.brand p{ margin:0; color:var(--muted); }

.top-actions{ display:flex; align-items:center; gap:.5rem; flex-wrap:wrap; }
.source{
  display:inline-flex; align-items:center; gap:.5rem;
  padding:.55rem .8rem; border:1px solid var(--border); border-radius: 12px; text-decoration:none;
  color:var(--text); background:transparent;
}
.source:hover{ border-color:var(--accent); box-shadow: 0 0 0 4px color-mix(in srgb, var(--ring) 40%, transparent); }

/* Grid */
.grid{ display:grid; grid-template-columns: 1.2fr .8fr; gap: 16px; align-items: stretch; }
@media (max-width: 960px){ .grid{ grid-template-columns: 1fr; } }

/* Cards */
.card{
  display:flex; flex-direction:column;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: var(--shadow);
  overflow: clip;
}

/* Section headers */
.section-head{
  display:flex; align-items:center; justify-content:space-between; gap:1rem;
  padding: 14px 16px;
  background: linear-gradient(180deg, rgba(255,255,255,.03), transparent);
  border-bottom: 1px solid var(--border);
}
.section-head--stack{ flex-wrap: wrap; }

/* Controls + inputs/buttons */
.controls{ display:flex; align-items:center; gap:.6rem; }
.controls--grow{ flex: 1 1 320px; }
.input{
  padding:.6rem .8rem; border:1px solid var(--border); border-radius: 12px; background: transparent; color: var(--text);
  outline: none; min-width: 240px;
}
.input:focus{ border-color: var(--ring); box-shadow: 0 0 0 4px color-mix(in srgb, var(--ring) 40%, transparent); }
.input--full{ width: 100%; min-width: 0; }

.btn{
  padding:.6rem .9rem; border:1px solid var(--border); border-radius: 12px; background: var(--card-strong); color: var(--text);
  cursor:pointer;
}
.btn:hover{ border-color: var(--accent); box-shadow: 0 0 0 4px color-mix(in srgb, var(--ring) 40%, transparent); }
.btn[disabled]{ opacity:.6; cursor:not-allowed; }
.btn-green{ background: linear-gradient(180deg, rgba(34,197,94,.25), rgba(34,197,94,.15)); border-color: rgba(34,197,94,.35); }
.btn-ghost{ background: transparent; border: 1px solid var(--border); }
.btn--block-sm{ }
@media (max-width:640px){
  .btn--block-sm{ flex:1 1 auto; width:100%; }
}

/* Table container grows */
.table-wrap{ flex: 1 1 auto; overflow:auto; }

/* Table */
.table-wrap table{
  width:100%;
  table-layout: fixed;
  border-collapse: separate;
  border-spacing: 0;
}
thead th{
  text-align:left; font-weight:600; color: var(--muted);
  padding: 10px 12px; background: linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.02));
  position: sticky; top: 0; z-index: 1;
  border-bottom: 1px solid var(--border);
}
tbody td{ padding: 10px 12px; border-bottom: 1px solid var(--border); }
th.num, td.num { text-align: right; }
.th-coin { padding-left: 44px; }

.coin-cell{ display:flex; align-items:center; gap:.75rem; min-width:0; }
.avatar{ width:24px; height:24px; border-radius:50%; display:block; }
.coin-name{ font-weight:600; white-space:nowrap; overflow:hidden; text-overflow:ellipsis; }
.coin-sym{ font-size:.8rem; color:var(--muted); }

.meta{ color: var(--muted); }

/* Percent coloring */
.pct{ font-variant-numeric: tabular-nums; }
.pct.pos{ color:#16a34a; }
.pct.neg{ color:#ef4444; }
.pct.dim{ color: var(--neutral); }

/* Sparkline */
.spark{ height:42px; }

/* Chat */
.chat-card{ max-height: none; }
#chatLog{
  flex: 1 1 auto;
  min-height: 0;
  overflow:auto;
  padding: 12px 16px;
  display:flex; flex-direction:column; gap:10px;
}
.msg{ padding:10px 12px; border-radius:12px; border:1px solid var(--border); max-width:85%; }
.msg.me{ align-self:flex-end; background: var(--card-strong); }
.msg.bot{ align-self:flex-start; background: transparent; }

.chatInput{
  display:flex; align-items:flex-end; gap:.6rem; padding: 12px 16px; border-top:1px solid var(--border);
  background: var(--card);
}
.chatInput textarea{
  flex:1; min-height:44px; resize: vertical;
  padding:.6rem .8rem; border:1px solid var(--border); border-radius: 12px; background: transparent; color: var(--text);
}
.chatInput textarea:focus{ border-color: var(--ring); box-shadow: 0 0 0 4px color-mix(in srgb, var(--ring) 40%, transparent); }

/* Small-screen tweaks */
@media (max-width: 640px){
  .wrap{ margin: 16px auto; padding: 0 12px; }

  .topbar{ flex-direction: column; align-items: stretch; gap:.75rem; }
  .top-actions{ align-self:flex-end; }

  /* stack controls nicely */
  .section-head--stack .controls{ width:100%; }
  .controls--grow{ flex: 1 1 100%; }
  .input{ min-width: 0; }

  /* hide sparkline column on mobile */
  .hide-sm, th:nth-child(5), td:nth-child(5){ display:none; }

  /* make price column a bit narrower */
  th:nth-child(3), td:nth-child(3){ width: 120px; }

  /* chat card height with sticky input */
  .chat-card{ max-height: 70vh; }
  .chatInput{ position: sticky; bottom: 0; }
  #chatLog{ max-height: calc(70vh - 70px); } /* leaves room for input */
}

/* Shimmer skeleton */
@keyframes shimmer { 0%{ background-position:200% 0 } 100%{ background-position:-200% 0 } }

/* Accessibility */
.sr{ position:absolute !important; width:1px; height:1px; padding:0; margin:-1px; overflow:hidden; clip:rect(0,0,0,0); white-space:nowrap; border:0; }