/* ===============================
   Bampaa — Dark Theme (Default)
   =============================== */

/* ---- Core tokens (dark-only) ---- */
:root{
  /* palette */
  --bg:#0e1422;
  --text:#e6e9ee;
  --muted:#a6b0be;
  --card:#121a2b;
  --border:#1e2840;

  --brand:#6AA59C;
  --brand-strong:#4B7F76;
  --accent:#FF3131;

  /* shadows, plots, misc */
  --shadow-1:0 10px 28px rgba(0,0,0,.35);
  --plot-bg:transparent;
  --plot-paper:transparent;
  --plot-grid:color-mix(in srgb, var(--text) 14%, transparent);
  --plot-font:var(--text);

  /* tutorial helpers */
  --ink:#e6e8ea;
  --codebg:rgba(0,0,0,0.35);

  /* motion & radius (used below) */
  --speed-fast: .18s ease;
  --radius-xl: 18px;

  /* glow used on selected cards */
  --glow-brand: 0 0 0 1px var(--brand) inset, 0 0 18px rgba(106,165,156,.35);
}

/* ---- Page background / base ---- */
html, body, #_dash-app, #react-entry-point {
  background:
    radial-gradient(1200px 700px at -10% -10%, rgba(106,165,156,.08), transparent 45%),
    radial-gradient(900px 520px at 110% -5%, rgba(106,165,156,.06), transparent 40%),
    var(--bg);
  color: var(--text);
  min-height: 100svh;
}

/* Prevent nested containers from reintroducing white */
.page, .container, .app-wrapper, .dash-debug-menu__outer {
  background: transparent !important;
}

/* ---- Header / nav ---- */
.topbar{
  display:flex;align-items:center;justify-content:space-between;padding:12px 24px;
  background: linear-gradient(
    90deg,
    color-mix(in srgb, var(--card) 92%, transparent),
    color-mix(in srgb, var(--card) 86%, transparent)
  );
  border-bottom:1px solid var(--border);
  box-shadow:var(--shadow-1);
}
.brand-wrap{display:flex;align-items:center;gap:10px}
.brand-logo{width:32px;height:32px;border-radius:9px;background:var(--brand);color:#fff;font-weight:800;display:grid;place-items:center;box-shadow:0 0 18px rgba(106,165,156,.45)}
.brand-name{font-weight:800;color:var(--text)!important;}
.nav-desktop{display:flex;align-items:center;gap:14px}
.nav-link{padding:8px 10px;border-radius:10px;color:var(--text)}
.nav-link.active{background:color-mix(in srgb, var(--brand) 16%, transparent)}
.nav-email{color:var(--muted);font-size:13px}

/* ---- Buttons & inputs ---- */
.btn{border-radius:12px;padding:10px 14px;font-weight:700;border:1px solid transparent;transition:var(--speed-fast)}
.btn:active{transform:translateY(1px)}
.btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand-strong));color:#fff;box-shadow:0 0 18px rgba(106,165,156,.45)}
.btn-ghost{background:transparent;border:1px solid var(--border);color:var(--text)}
.btn { transition: transform var(--speed-fast), box-shadow var(--speed-fast); }
.btn:hover { transform: translateY(-2px); box-shadow: 0 10px 22px rgba(106,165,156,.22); }

.label{font-weight:700;font-size:13px;color:var(--text)}
.input{width:100%;padding:10px 12px;border-radius:10px;background:var(--card);color:var(--text);border:1px solid var(--border)}
.input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px color-mix(in srgb,var(--brand) 25%, transparent)}

/* ---- Cards / glass ---- */
.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius-xl);box-shadow:var(--shadow-1)}
.glass{background:color-mix(in srgb,var(--card) 70%, transparent);border:1px solid color-mix(in srgb,var(--border) 85%, transparent);backdrop-filter:blur(10px);border-radius:18px;box-shadow:var(--shadow-1)}

/* ---- Hero ---- */
.hero{max-width:1100px;margin:0 auto;border-radius:24px}
.hero-headline{font-size:clamp(28px,4vw,40px);font-weight:800;margin:6px 0 10px}
.hero-sub{color:var(--muted);margin:0 0 18px}

/* ---- Section title ---- */
.section-title{font-weight:800;margin:8px 0 6px}

/* ---- Dash DataTable theme ---- */
.dash-table-container .dash-spreadsheet-container{
  background:var(--card); border:1px solid var(--border); border-radius:12px;
}
.dash-table-container .dash-spreadsheet-inner table{ background:var(--card); }
.dash-table-container th, .dash-table-container td{
  color:var(--text)!important; border-color:var(--border)!important;
}
.dash-table-container .dash-header{
  background:color-mix(in srgb,var(--card) 85%, transparent);
  font-weight:700;
}
/* Scrollbar tone */
.dash-table-container .dash-spreadsheet-container .dash-spreadsheet-inner {
  scrollbar-color: var(--border) transparent;
}

/* ---- Dropdowns (react-select) ---- */
.Select-control, .Select-menu-outer { background: var(--card)!important; color: var(--text)!important; }
.Select__placeholder { color:#c9d1d9 !important; }
.Select__single-value { color:#f8f9fa !important; }
.VirtualizedSelectOption { color:#e5e7eb !important; }

/* “bright” variant if used */
.dropdown--bright .Select-placeholder,
.dropdown--bright .Select--single > .Select-control .Select-placeholder {
  color:#b8c7ff !important; opacity:1 !important; font-weight:600;
}
.dropdown--bright .Select-control {
  border-color:#5b6b8a; box-shadow:0 0 0 1px #5b6b8a inset; background-color:var(--card);
}
.dropdown--bright .Select-control:hover { border-color:#7b8bb0; }
.dropdown--bright .Select.is-disabled > .Select-control .Select-placeholder { color:#8896b3 !important; }
.dropdown--bright .Select-input > input { color:var(--text); }

/* ---- Pills / badges ---- */
.pill.badge-brand { box-shadow: 0 0 0 1px var(--brand) inset, 0 0 12px rgba(106,165,156,.25); }

/* ---- Tabs ---- */
.tab{
  background:var(--card); color:var(--muted);
  border:none !important; border-bottom:2px solid transparent !important;
  transition: background .15s ease, color .15s ease, border-color .15s ease;
}
.tab:hover{
  background: color-mix(in srgb, var(--card) 90%, transparent);
  color: var(--text);
  border-bottom-color: color-mix(in srgb, var(--brand) 40%, transparent);
}
.tab--selected{
  background: var(--card) !important;
  color: var(--text) !important;
  border-bottom: 2px solid var(--brand) !important;
  font-weight: 700;
}

/* ---- Layout helpers ---- */
.container { max-width:980px; margin:28px auto; padding:24px; }

/* Fix link underlines/arrow doubling in iOS */
a, a:visited { text-decoration:none; }
.btn, .btn * { text-decoration:none !important; }

/* Action row (desktop default) */
.hero-actions { display:flex; align-items:center; gap:12px; flex-wrap:wrap; }

/* Ghost button style for consistency */
.btn-ghost {
  border:1px solid var(--border);
  background: rgba(255,255,255,0.04);
  border-radius:999px;
  padding:12px 18px;
}
.btn-primary { border-radius:999px; padding:12px 18px; }

/* Tighter header on small screens */
.site-nav { display:flex; align-items:center; gap:8px; flex-wrap:wrap; }

/* ---- Category cards ---- */
.cat-card {
  background: var(--card);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 10px 14px;
  box-shadow: var(--shadow-1);
  cursor: pointer;
  transition: transform var(--speed-fast), box-shadow var(--speed-fast), background var(--speed-fast), border-color var(--speed-fast);
  display: inline-flex;
  flex-direction: column;
  gap: 2px;
}
.cat-card:hover { transform: translateY(-1px); box-shadow: 0 12px 26px rgba(0,0,0,.35); }
.cat-card .cat-title { font-weight:800; letter-spacing:.2px; }
.cat-card .cat-sub { font-size:12px; color:var(--muted); }
.cat-selected { border-color:var(--brand); box-shadow:var(--glow-brand); background: color-mix(in srgb, var(--brand) 10%, var(--card)); }

/* ---- Tutorials / code blocks ---- */
.tut-card { background:var(--card); border:1px solid var(--border); border-radius:12px; padding:16px; }
.tut-card .label { font-size:12px; letter-spacing:.08em; text-transform:uppercase; color:var(--muted); margin-bottom:8px; }
.tut-concept { font-weight:600; color:var(--ink); margin-bottom:8px; }
.tut-h { font-weight:600; margin-right:8px; color:var(--ink); }
.code-block {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 13px;
  background: var(--codebg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px;
  margin: 8px 0;
  white-space: pre-wrap;
}
.tut-row { margin: 8px 0; }
.tut-details summary { cursor: pointer; color: var(--muted); }
.tut-details { margin-top: 6px; }

/* ---- Responsive breakpoints ---- */
@media (max-width: 980px){
  .container { margin:18px auto; padding:18px; }
}
@media (max-width: 768px){
  html { font-size:15px; }
  .container { margin:14px auto; padding:14px; }
  .hero { border-radius:20px; }
  .hero-headline { font-size:1.85rem; line-height:1.2; }
  .hero-sub { font-size:1rem; }

  /* Buttons stack for mobile */
  .hero-actions { flex-direction:column; align-items:stretch; gap:10px; }
  .hero-actions .btn { width:100%; justify-content:center; }

  /* Smaller chips */
  .pill { font-size:.78rem; padding:6px 10px; }
}
@media (max-width: 380px){
  .hero-headline { font-size:1.6rem; }
  .container { padding:12px; }
}