/* ===== Coding Camp — dark "terminal/neon" theme ===== */
:root {
  --bg:        #0d1117;
  --bg-soft:   #161b22;
  --bg-card:   #1c2330;
  --border:    #2a3343;
  --text:      #e6edf3;
  --muted:     #9aa7b8;
  --neon:      #39d353;   /* terminal green */
  --neon-dim:  #2ea043;
  --accent:    #58a6ff;   /* electric blue */
  --accent-2:  #d2a8ff;   /* purple */
  --danger:    #f85149;
  --warn:      #f0b429;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  background-image:
    radial-gradient(circle at 15% 0%, rgba(88,166,255,0.10), transparent 40%),
    radial-gradient(circle at 85% 10%, rgba(57,211,83,0.10), transparent 40%);
  color: var(--text);
  font-family: var(--sans);
  line-height: 1.6;
}

a { color: var(--accent); }

/* ---- Top nav ---- */
.nav {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 14px 24px;
  border-bottom: 1px solid var(--border);
  background: rgba(13,17,23,0.85);
  backdrop-filter: blur(6px);
  position: sticky;
  top: 0;
  z-index: 10;
  flex-wrap: wrap;
}
.nav .brand {
  font-family: var(--mono);
  font-weight: 700;
  font-size: 18px;
  color: var(--neon);
  text-decoration: none;
  margin-right: auto;
}
.nav .brand::before { content: "> "; color: var(--muted); }
.nav a:not(.brand) {
  color: var(--muted);
  text-decoration: none;
  font-size: 15px;
}
.nav a:not(.brand):hover { color: var(--text); }

/* ---- Layout ---- */
.wrap { max-width: 960px; margin: 0 auto; padding: 32px 24px 64px; }
.narrow { max-width: 620px; }

/* ---- Hero ---- */
.hero { text-align: center; padding: 56px 24px 32px; }
.hero h1 {
  font-size: clamp(32px, 6vw, 56px);
  margin: 0 0 12px;
  line-height: 1.1;
}
.hero h1 .grad {
  background: linear-gradient(90deg, var(--neon), var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero p.lead { font-size: 20px; color: var(--muted); max-width: 640px; margin: 0 auto 28px; }

/* ---- Code window decoration ---- */
.code-window {
  max-width: 540px;
  margin: 0 auto;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  text-align: left;
  box-shadow: 0 20px 50px rgba(0,0,0,0.45);
}
.code-window .bar {
  display: flex; gap: 8px; padding: 12px 14px;
  border-bottom: 1px solid var(--border); background: #11161e;
}
.code-window .bar span { width: 12px; height: 12px; border-radius: 50%; display: inline-block; }
.dot-r { background: #ff5f56; } .dot-y { background: #ffbd2e; } .dot-g { background: #27c93f; }
.code-window pre {
  margin: 0; padding: 18px; font-family: var(--mono); font-size: 14px;
  color: var(--text); overflow-x: auto;
}
.tok-key { color: var(--accent-2); }
.tok-fn  { color: var(--neon); }
.tok-str { color: var(--warn); }
.tok-com { color: var(--muted); }

/* ---- Buttons ---- */
.btn {
  display: inline-block;
  font-family: var(--mono);
  font-weight: 700;
  font-size: 16px;
  padding: 12px 24px;
  border-radius: 10px;
  border: 1px solid var(--neon-dim);
  background: var(--neon);
  color: #07210f;
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.05s, box-shadow 0.15s;
}
.btn:hover { box-shadow: 0 0 0 4px rgba(57,211,83,0.18); }
.btn:active { transform: translateY(1px); }
.btn.secondary { background: transparent; color: var(--text); border-color: var(--border); }
.btn.accent { background: var(--accent); border-color: var(--accent); color: #04122b; }
.btn.danger { background: transparent; color: var(--danger); border-color: var(--danger); }
.btn.small { padding: 6px 12px; font-size: 13px; }

/* ---- Cards & grids ---- */
.grid { display: grid; gap: 20px; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
/* Force an even 2-up grid (e.g. the 4 day cards = a tidy 2x2). Collapses to 1 column on phones. */
.grid-2 { grid-template-columns: 1fr 1fr; }
@media (max-width: 600px) { .grid-2 { grid-template-columns: 1fr; } }
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 22px;
}
.card h3 { margin-top: 0; }
.card .icon { font-size: 30px; }

.day-card { border-left: 3px solid var(--neon); }
.day-card .tag {
  font-family: var(--mono); font-size: 12px; color: var(--neon);
  text-transform: uppercase; letter-spacing: 1px;
}

/* ---- Forms ---- */
.field { margin-bottom: 16px; }
.field label { display: block; font-size: 14px; color: var(--muted); margin-bottom: 6px; }
.field input, .field textarea, .field select {
  width: 100%;
  padding: 11px 12px;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-family: var(--sans);
  font-size: 15px;
}
.field input:focus, .field textarea:focus { outline: none; border-color: var(--accent); }
.row2 { display: grid; gap: 16px; grid-template-columns: 1fr 1fr; }
@media (max-width: 520px) { .row2 { grid-template-columns: 1fr; } }

/* ---- Messages ---- */
.msg { padding: 14px 16px; border-radius: 8px; margin: 16px 0; font-size: 15px; }
.msg.ok   { background: rgba(57,211,83,0.12);  border: 1px solid var(--neon-dim); }
.msg.err  { background: rgba(248,81,73,0.12);  border: 1px solid var(--danger); }
.msg.info { background: rgba(88,166,255,0.10); border: 1px solid var(--accent); }
.msg.warn { background: rgba(240,180,41,0.12); border: 1px solid var(--warn); }
.hidden { display: none !important; }

/* ---- Tables (admin) ---- */
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 600; font-size: 12px; text-transform: uppercase; letter-spacing: 0.5px; }
tr:hover td { background: rgba(255,255,255,0.02); }
.pill { font-family: var(--mono); font-size: 12px; padding: 2px 8px; border-radius: 20px; }
.pill.reg  { background: rgba(57,211,83,0.15);  color: var(--neon); }
.pill.wait { background: rgba(240,180,41,0.15); color: var(--warn); }
.pill.paid { background: rgba(57,211,83,0.15);  color: var(--neon); }
.pill.unpaid { background: rgba(248,81,73,0.12); color: var(--danger); }

.stat-row { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 24px; }
.stat {
  flex: 1; min-width: 130px; background: var(--bg-card);
  border: 1px solid var(--border); border-radius: 10px; padding: 16px;
}
.stat .num { font-size: 30px; font-weight: 700; font-family: var(--mono); }
.stat .lbl { color: var(--muted); font-size: 13px; }

footer { border-top: 1px solid var(--border); color: var(--muted); padding: 24px; text-align: center; font-size: 13px; }
.center { text-align: center; }
.mono { font-family: var(--mono); }
.muted { color: var(--muted); }