@import url('https://fonts.googleapis.com/css2?family=Space+Mono:wght@400;700&family=DM+Sans:wght@400;500;600;700&display=swap');

:root {
  --viridian:    #40826D;
  --viridian-dk: #2d6355;
  --viridian-lt: #5aac93;
  --viridian-bg: #e8f4f0;
  --bg:          #f0f2f1;
  --surface:     #ffffff;
  --border:      #c2ccc8;
  --border2:     #9aada7;
  --text:        #111816;
  --text2:       #3d5048;
  --text3:       #6b8278;
  --correct:     #40826D; --correct-b: #2d6355; --correct-txt: #ffffff;
  --present:     #d4a017; --present-b: #a87c0e; --present-txt: #1a1200;
  --font-mono: 'Space Mono', monospace;
  --font-sans:  'DM Sans', sans-serif;
  --radius: 5px; --radius-lg: 10px;
  --transition: 0.15s ease;
}
body.grownup {
  --bg: #0c1210; --surface: #141c19; --border: #253029; --border2: #3a4d45;
  --text: #e4ede9; --text2: #8aad9f; --text3: #4d6b5e;
  --viridian: #52a88e; --viridian-dk: #3d8870; --viridian-lt: #6ec4a8;
  --viridian-bg: rgba(64,130,109,0.12);
  --correct: #52a88e; --correct-b: #3d8870; --correct-txt: #0c1210;
  --present: #e6b830; --present-b: #c49a1a; --present-txt: #0c0900;
}
* { box-sizing: border-box; margin: 0; padding: 0; touch-action: manipulation; }
html { height: 100%; overflow: hidden; }
body {
  font-family: var(--font-sans);
  background: var(--bg); color: var(--text);
  height: 100%; overflow-x: hidden; overflow-y: auto;
  overscroll-behavior: none;
  transition: background 0.3s, color 0.3s;
}
body::after {
  content: ''; position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background-image: linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 36px 36px; opacity: 0.35; transition: opacity 0.3s;
}
body.grownup::after { opacity: 0.1; }
body.grownup::before {
  content: ''; position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background: repeating-linear-gradient(0deg,rgba(0,0,0,0.03) 0px,rgba(0,0,0,0.03) 1px,transparent 1px,transparent 4px);
}

.view { display: none; position: relative; z-index: 1; }
.view.active { display: flex; flex-direction: column; align-items: center; min-height: 100vh; min-height: 100dvh; }

/* Header */
header {
  width: 100%; max-width: 540px;
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 0 14px;
  border-bottom: 2px solid var(--viridian);
  margin-bottom: 18px;
}
.logo-wrap { display: flex; flex-direction: column; gap: 2px; }
.logo { font-family: var(--font-mono); font-size: 1.45rem; font-weight: 700; color: var(--text); line-height: 1; }
.logo span { color: var(--viridian); }
.logo-sub { font-family: var(--font-mono); font-size: 0.58rem; color: var(--text3); letter-spacing: 2.5px; text-transform: uppercase; }
.header-controls { display: flex; align-items: center; gap: 7px; }

/* Buttons */
.btn-icon {
  width: 36px; height: 36px; border-radius: var(--radius);
  border: 2px solid var(--border2); background: var(--surface);
  cursor: pointer; display: flex; align-items: center; justify-content: center;
  font-size: 1rem; color: var(--text2); font-weight: 700; text-decoration: none;
  transition: all var(--transition); box-shadow: 0 2px 0 var(--border2);
}
.btn-icon:hover { background: var(--viridian-bg); border-color: var(--viridian); color: var(--viridian); box-shadow: 0 2px 0 var(--viridian); }
.btn-icon:active { transform: translateY(2px); box-shadow: none; }
.btn-next {
  height: 36px; padding: 0 12px; border-radius: var(--radius);
  border: 2px solid var(--viridian-dk); background: var(--viridian); color: #fff;
  font-family: var(--font-mono); font-size: 0.75rem; font-weight: 700; letter-spacing: 1px;
  cursor: pointer; box-shadow: 0 3px 0 var(--viridian-dk); transition: all var(--transition);
}
.btn-next:hover { background: var(--viridian-lt); }
.btn-next:active { transform: translateY(2px); box-shadow: none; }
.gear-btn {
  position: relative; width: 36px; height: 36px; border-radius: var(--radius);
  border: 2px solid var(--border2); background: var(--surface);
  cursor: pointer; display: flex; align-items: center; justify-content: center;
  font-size: 1.05rem; color: var(--text2); transition: all var(--transition);
  box-shadow: 0 2px 0 var(--border2);
}
.gear-btn:hover { background: var(--viridian-bg); border-color: var(--viridian); color: var(--viridian); }
.gear-btn:active { transform: translateY(2px); box-shadow: none; }
.gear-btn .dot {
  position: absolute; top: 4px; right: 4px; width: 7px; height: 7px;
  border-radius: 50%; background: var(--viridian); border: 1.5px solid var(--surface); display: none;
}
body.grownup .gear-btn .dot { display: block; }
body.grownup .gear-btn { border-color: var(--viridian); color: var(--viridian); background: var(--viridian-bg); }
.btn-primary {
  background: var(--viridian); color: #fff; border: none; border-radius: var(--radius);
  padding: 11px 30px; font-family: var(--font-mono); font-size: 0.85rem; font-weight: 700;
  cursor: pointer; letter-spacing: 1px; text-transform: uppercase;
  box-shadow: 0 3px 0 var(--viridian-dk);
  transition: background var(--transition), transform 0.08s, box-shadow 0.08s;
}
.btn-primary:hover { background: var(--viridian-lt); }
.btn-primary:active { transform: translateY(2px); box-shadow: none; }

/* Toast */
.toast {
  position: fixed; top: 18px; left: 50%; transform: translateX(-50%) translateY(-60px);
  background: var(--text); color: var(--bg);
  padding: 9px 20px; border-radius: var(--radius);
  font-family: var(--font-mono); font-size: 0.78rem; font-weight: 700; letter-spacing: 0.5px;
  z-index: 500; pointer-events: none; white-space: nowrap; opacity: 0;
  box-shadow: 0 4px 16px rgba(0,0,0,0.25);
  transition: transform 0.3s cubic-bezier(.34,1.56,.64,1), opacity 0.25s;
}
.toast.show { transform: translateX(-50%) translateY(0); opacity: 1; }

/* Overlays / Modals */
.overlay {
  display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.55); z-index: 50;
  align-items: center; justify-content: center; backdrop-filter: blur(5px);
}
.overlay.show { display: flex; }
.modal {
  background: var(--surface); border: 2px solid var(--viridian); border-radius: var(--radius-lg);
  padding: 30px 34px; text-align: center; max-width: 360px; width: 92%;
  box-shadow: 0 0 0 4px var(--viridian-bg), 0 20px 60px rgba(0,0,0,0.3);
  animation: modalPop 0.32s cubic-bezier(.34,1.56,.64,1);
}
@keyframes modalPop { from{transform:scale(0.86) translateY(8px);opacity:0} to{transform:scale(1) translateY(0);opacity:1} }
.modal-icon {
  width: 54px; height: 54px; border-radius: 50%; background: var(--viridian-bg);
  border: 2px solid var(--viridian); color: var(--viridian);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-mono); font-size: 1.4rem; font-weight: 700; margin: 0 auto 14px;
}
.modal h2 { font-family: var(--font-mono); font-size: 1.25rem; font-weight: 700; color: var(--text); margin-bottom: 6px; }
.modal .modal-sub { font-size: 0.87rem; color: var(--text2); margin-bottom: 18px; }

/* Confetti */
.confetti-piece { position: fixed; top: -20px; pointer-events: none; z-index: 400; opacity: 0; animation: confettiFall linear forwards; }
@keyframes confettiFall { 0%{opacity:1} 85%{opacity:1} 100%{opacity:0;transform:translateY(108vh) rotate(600deg)} }

/* Admin overlay */
.admin-overlay {
  display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.65); z-index: 60;
  align-items: center; justify-content: center; backdrop-filter: blur(6px);
}
.admin-overlay.show { display: flex; }
.admin-modal {
  background: #0a100d; border: 2px solid #40826D; border-radius: var(--radius-lg);
  padding: 26px; max-width: 420px; width: 92%; max-height: 88vh; overflow-y: auto;
  color: #c8ddd6; box-shadow: 0 0 0 4px rgba(64,130,109,0.1), 0 24px 80px rgba(0,0,0,0.7);
  animation: modalPop 0.3s cubic-bezier(.34,1.56,.64,1);
}
.admin-modal h2 { font-family: var(--font-mono); font-size: 1.05rem; color: #52c4a0; margin-bottom: 3px; letter-spacing: 1px; text-transform: uppercase; }
.admin-sub { font-size: 0.76rem; color: #3d6050; margin-bottom: 20px; font-family: var(--font-mono); }
.admin-section { background: rgba(64,130,109,0.06); border: 1px solid #1a2e25; border-radius: 8px; padding: 16px; margin-bottom: 12px; }
.admin-section h3 { font-family: var(--font-mono); font-size: 0.62rem; color: #3d6050; text-transform: uppercase; letter-spacing: 2.5px; margin-bottom: 12px; }
.af { margin-bottom: 11px; }
.af label { display: block; font-size: 0.68rem; color: #52a88e; font-family: var(--font-mono); font-weight: 700; margin-bottom: 4px; text-transform: uppercase; letter-spacing: 1px; }
.af select { width: 100%; padding: 8px 11px; background: rgba(255,255,255,0.04); border: 1px solid #1a2e25; border-radius: 5px; color: #c8ddd6; font-family: var(--font-mono); font-size: 0.83rem; outline: none; }
.af select option { background: #0a100d; }
.abtn { padding: 8px 16px; border-radius: 5px; border: none; font-family: var(--font-mono); font-size: 0.76rem; font-weight: 700; cursor: pointer; letter-spacing: 0.5px; text-transform: uppercase; transition: all 0.14s; }
.abtn.primary { background: #40826D; color: #fff; box-shadow: 0 2px 0 #2d6355; }
.abtn.primary:hover { background: #52a88e; }
.abtn.primary:active { transform: translateY(2px); box-shadow: none; }
.abtn.danger { background: #991b1b; color: #fca5a5; }
.abtn.danger:hover { background: #b91c1c; }
.abtn.ghost { background: rgba(255,255,255,0.05); color: #52a88e; border: 1px solid #1a2e25; }
.abtn.ghost:hover { background: rgba(64,130,109,0.15); }
.abtn-row { display: flex; gap: 7px; flex-wrap: wrap; }
.stats-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.stat-card { background: rgba(64,130,109,0.06); border: 1px solid #1a2e25; border-radius: 6px; padding: 12px; text-align: center; }
.stat-num { font-family: var(--font-mono); font-size: 1.7rem; color: #52c4a0; font-weight: 700; }
.stat-lbl { font-size: 0.62rem; color: #3d6050; text-transform: uppercase; letter-spacing: 1.5px; font-family: var(--font-mono); }
.admin-modal::-webkit-scrollbar { width: 4px; }
.admin-modal::-webkit-scrollbar-thumb { background: #1a3528; border-radius: 2px; }

/* Footer */
footer {
  position: relative; z-index: 1; width: 100%; text-align: center;
  padding: 14px 0 10px; font-size: 0.72rem; color: var(--text3);
  font-family: var(--font-mono); letter-spacing: 0.5px;
  border-top: 1px solid var(--border); margin-top: auto;
}

/* Shared animations */
@keyframes shake { 0%,100%{transform:translateX(0)} 20%{transform:translateX(-6px)} 40%{transform:translateX(6px)} 60%{transform:translateX(-4px)} 80%{transform:translateX(4px)} }
@keyframes popIn { 0%{transform:scale(1)} 45%{transform:scale(1.18)} 100%{transform:scale(1)} }

@media (max-width: 400px) {
  .logo { font-size: 1.2rem; }
}