/* ===== AGENT ACADEMY — THE BIRTHDAY CASE ===== */

:root {
  --bg: #0b1026;
  --bg2: #131a3a;
  --panel: #1b2350;
  --accent: #ffd23f;      /* spy gold */
  --accent2: #3fe0ff;     /* scanner cyan */
  --good: #4ade80;
  --bad: #ff6b6b;
  --text: #eef1ff;
  --muted: #9aa3d0;
  --radius: 22px;
  --shadow: 0 12px 40px rgba(0,0,0,.45);
  font-size: 18px;
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }

html, body {
  margin: 0;
  min-height: 100%;
  background: radial-gradient(1200px 600px at 50% -10%, var(--bg2), var(--bg));
  color: var(--text);
  font-family: "Trebuchet MS", "Segoe UI", system-ui, -apple-system, sans-serif;
  overflow-x: hidden;
}

#stars {
  position: fixed; inset: 0; pointer-events: none; z-index: 0;
  background-image:
    radial-gradient(2px 2px at 20% 30%, #fff7 50%, transparent),
    radial-gradient(2px 2px at 70% 60%, #fff5 50%, transparent),
    radial-gradient(1.5px 1.5px at 40% 80%, #fff6 50%, transparent),
    radial-gradient(1.5px 1.5px at 85% 20%, #fff5 50%, transparent),
    radial-gradient(2px 2px at 55% 15%, #fff4 50%, transparent);
  background-repeat: no-repeat;
  animation: twinkle 4s ease-in-out infinite alternate;
}
@keyframes twinkle { from { opacity:.4 } to { opacity:.9 } }

/* ---- Screens ---- */
.screen { display: none; position: relative; z-index: 1; min-height: 100vh;
  padding: 18px; max-width: 760px; margin: 0 auto; }
.screen.active { display: block; }

/* ---- Cards ---- */
.card {
  background: linear-gradient(180deg, var(--panel), #161d44);
  border: 2px solid #2c3a7a;
  border-radius: var(--radius);
  padding: 26px 22px; margin: 24px auto; max-width: 560px;
  box-shadow: var(--shadow); text-align: center;
}
.glow { box-shadow: var(--shadow), 0 0 0 1px #ffd23f33, 0 0 40px #3fe0ff22; }

.badge {
  font-size: 64px; width: 110px; height: 110px; line-height: 110px;
  margin: 0 auto 8px; border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, #2a3a7a, #10173a);
  border: 3px solid var(--accent);
  box-shadow: 0 0 30px #ffd23f55;
}

h1 { font-size: 2.1rem; margin: 6px 0 2px; letter-spacing: 2px; color: var(--accent); }
.subtitle { color: var(--accent2); letter-spacing: 3px; font-weight: bold; margin: 0 0 14px; font-size: .8rem; }
.brief { color: var(--text); line-height: 1.45; }
.field-label { color: var(--muted); font-size: .85rem; letter-spacing: 1px; text-transform: uppercase; margin: 18px 0 8px; }

input[type=text] {
  width: 100%; padding: 16px; font-size: 1.3rem; text-align: center;
  border-radius: 14px; border: 2px solid #3a468f; background: #0e1433;
  color: #fff; font-family: inherit; letter-spacing: 2px;
}
input[type=text]:focus { outline: none; border-color: var(--accent2); box-shadow: 0 0 0 3px #3fe0ff33; }
#codename { letter-spacing: 1px; }

/* ---- Avatars ---- */
.avatar-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
.avatar {
  font-size: 2.1rem; padding: 12px 0; border-radius: 14px; cursor: pointer;
  background: #0e1433; border: 2px solid #3a468f; transition: transform .1s, border-color .15s;
}
.avatar:hover { transform: translateY(-2px); }
.avatar.selected { border-color: var(--accent); background: #2a2350; box-shadow: 0 0 18px #ffd23f55; }

/* ---- Buttons ---- */
.btn {
  background: linear-gradient(180deg, var(--accent), #f5b800);
  color: #1a1300; border: none; border-radius: 14px;
  padding: 16px 22px; font-size: 1.1rem; font-weight: bold; letter-spacing: 1px;
  cursor: pointer; font-family: inherit; box-shadow: 0 6px 0 #b88a00;
  transition: transform .06s, box-shadow .06s; margin-top: 8px;
}
.btn:active { transform: translateY(4px); box-shadow: 0 2px 0 #b88a00; }
.btn.big { width: 100%; font-size: 1.25rem; padding: 18px; margin-top: 18px; }
.btn.vault { background: linear-gradient(180deg, #3fe0ff, #1aa8d0); box-shadow: 0 6px 0 #137a99; color: #00222e; }
.icon-btn { background: #0e1433; border: 2px solid #3a468f; color: #fff; font-size: 1.2rem;
  width: 46px; height: 46px; border-radius: 12px; cursor: pointer; }
.icon-btn.off { opacity: .4; }
.text-btn { background: none; border: none; color: var(--muted); text-decoration: underline;
  font-size: .85rem; cursor: pointer; margin: 22px auto 8px; display: block; font-family: inherit; }

/* ---- Top bar ---- */
.topbar { display: flex; align-items: center; gap: 10px; background: var(--panel);
  border-radius: 16px; padding: 10px 12px; box-shadow: var(--shadow); }
.agent-tag { display: flex; align-items: center; gap: 8px; flex: 1; min-width: 0; }
.agent-avatar { font-size: 1.8rem; }
#agent-name { font-weight: bold; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.rank { text-align: right; line-height: 1.1; }
.rank-label { display: block; font-size: .6rem; color: var(--muted); letter-spacing: 1px; }
#rank-name { color: var(--accent); font-weight: bold; }

/* ---- Progress ---- */
.progress-wrap { margin: 16px 2px 6px; }
.progress-bar { height: 16px; background: #0e1433; border-radius: 10px; overflow: hidden; border: 1px solid #3a468f; }
.progress-fill { height: 100%; width: 0%; background: linear-gradient(90deg, var(--accent2), var(--good));
  transition: width .5s ease; }
.progress-text { text-align: center; color: var(--muted); font-size: .85rem; margin: 6px 0 0; }

/* ---- Enter code ---- */
.enter-code { background: var(--panel); border-radius: 16px; padding: 16px; margin: 14px 0; box-shadow: var(--shadow); }
.prompt { margin: 0 0 10px; font-size: .95rem; }
.code-row { display: flex; gap: 8px; }
.code-row input { flex: 1; }
.code-row .btn { margin-top: 0; white-space: nowrap; }
.code-msg { text-align: center; min-height: 1.2em; margin: 8px 0 0; font-weight: bold; }
.code-msg.good { color: var(--good); }
.code-msg.bad { color: var(--bad); }

/* ---- Intel grid ---- */
.section-title { text-align: center; letter-spacing: 3px; color: var(--muted); font-size: .9rem; margin: 18px 0 10px; }
.intel-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
@media (max-width: 380px) { .intel-grid { grid-template-columns: repeat(2, 1fr); } }
.intel-card {
  aspect-ratio: 1 / 1; border-radius: 16px; display: flex; flex-direction: column;
  align-items: center; justify-content: center; gap: 6px; cursor: default;
  background: #0e1433; border: 2px dashed #3a468f; color: var(--muted);
  font-size: 2rem; transition: transform .2s;
}
.intel-card .label { font-size: .65rem; letter-spacing: 1px; }
.intel-card.unlocked {
  background: linear-gradient(180deg, #243069, #1a2350);
  border: 2px solid var(--accent); color: var(--text); cursor: pointer;
  box-shadow: 0 0 18px #ffd23f33;
  animation: pop .4s ease;
}
@keyframes pop { 0% { transform: scale(.6); } 60% { transform: scale(1.1); } 100% { transform: scale(1); } }
.intel-card.locked .icon { filter: grayscale(1); opacity: .35; }

/* ---- Overlays ---- */
.overlay { position: fixed; inset: 0; z-index: 10; background: rgba(5,8,22,.82);
  display: flex; align-items: center; justify-content: center; padding: 20px; backdrop-filter: blur(3px); }
.overlay-card { background: linear-gradient(180deg, var(--panel), #161d44);
  border: 2px solid var(--accent); border-radius: var(--radius); padding: 28px 24px;
  max-width: 440px; width: 100%; text-align: center; animation: rise .35s ease; }
@keyframes rise { from { transform: translateY(30px); opacity: 0; } to { transform: none; opacity: 1; } }
.overlay-icon { font-size: 64px; margin-bottom: 6px; }
.overlay-label { color: var(--accent2); letter-spacing: 3px; font-weight: bold; font-size: .8rem; margin: 0 0 10px; }
.overlay-text { font-size: 1.25rem; line-height: 1.4; margin: 0 0 18px; }
.vault-card { border-color: var(--accent2); }

/* ---- Final ---- */
.celebrate { border-color: var(--good); }
.rank-final { color: var(--accent); font-size: 1.2rem; }

.hidden { display: none !important; }

/* desktop niceties */
@media (min-width: 640px) {
  :root { font-size: 19px; }
}