@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;500;600;700;800;900&family=Crimson+Pro:ital,wght@0,300;0,400;0,500;0,600;0,700;1,400&display=swap');

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:           hsl(40, 20%, 95%);
  --bg-card:      hsl(40, 25%, 97%);
  --fg:           hsl(240, 10%, 12%);
  --muted:        hsl(40, 15%, 90%);
  --muted-fg:     hsl(240, 5%, 45%);
  --border:       hsl(42, 30%, 78%);

  --primary:      hsl(42, 85%, 48%);
  --primary-dark: hsl(42, 85%, 38%);
  --primary-fg:   hsl(240, 10%, 8%);
  --secondary:    hsl(350, 55%, 42%);
  --secondary-fg: hsl(40, 20%, 95%);
  --accent:       hsl(185, 90%, 42%);

  --gradient-warm: linear-gradient(135deg, hsl(42,85%,48%), hsl(350,55%,42%));
  --gradient-gold: linear-gradient(135deg, hsl(42,85%,48%), hsl(35,90%,58%));

  --shadow-card:       0 4px 24px -4px hsl(42 85% 48% / .12), 0 1px 3px hsl(240 10% 12% / .06);
  --shadow-card-hover: 0 8px 40px -4px hsl(42 85% 48% / .24), 0 2px 8px hsl(240 10% 12% / .08);

  --font-display: "Orbitron", sans-serif;
  --font-body:    "Crimson Pro", serif;
  --radius:       0.25rem;
}

body {
  font-family: var(--font-body);
  font-size: 17px;
  letter-spacing: .01em;
  background: var(--bg);
  color: var(--fg);
  min-height: 100vh;
  line-height: 1.6;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  letter-spacing: .06em;
  text-transform: uppercase;
  line-height: 1.15;
}

/* ── Layout ── */
.container { max-width: 480px; margin: 0 auto; padding: 1.5rem; }
.container.wide { max-width: 1000px; }

/* ── Cards ── */
.card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--border);
  margin-bottom: 1rem;
}

/* ── Buttons ── */
.btn {
  display: flex; align-items: center; justify-content: center; gap: .5rem;
  width: 100%; padding: .85rem 1.5rem;
  background: var(--gradient-warm);
  color: var(--primary-fg);
  border: none; border-radius: var(--radius);
  font-family: var(--font-display);
  font-size: .75rem; font-weight: 700;
  letter-spacing: .08em; text-transform: uppercase;
  cursor: pointer; text-decoration: none;
  transition: opacity .15s, transform .1s;
  user-select: none;
}
.btn:active { transform: scale(.98); }
.btn:hover  { opacity: .88; }
.btn.secondary {
  background: transparent;
  color: var(--fg);
  border: 1.5px solid var(--border);
}
.btn.secondary:hover { border-color: var(--primary); color: var(--primary); opacity: 1; }
.btn.success  { background: hsl(142, 70%, 35%); color: white; }
.btn.success:hover { opacity: .88; }
.btn.outline  {
  background: transparent;
  color: var(--primary);
  border: 1.5px solid var(--primary);
}
.btn.outline:hover { background: var(--primary); color: var(--primary-fg); opacity: 1; }
.btn.sm { padding: .55rem 1rem; font-size: .7rem; width: auto; }
.btn:disabled { opacity: .45; cursor: not-allowed; transform: none; }

/* ── Form ── */
.field { margin-bottom: 1rem; }
.label {
  display: block; font-family: var(--font-display);
  font-size: .65rem; font-weight: 700;
  letter-spacing: .1em; text-transform: uppercase;
  color: var(--muted-fg); margin-bottom: .4rem;
}
.input {
  width: 100%; padding: .8rem 1rem;
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  font-family: var(--font-body); font-size: 1rem;
  background: var(--bg-card); color: var(--fg);
  outline: none; transition: border-color .15s;
}
.input:focus { border-color: var(--primary); }
.input.big {
  font-family: var(--font-display);
  font-size: 1.5rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: .15em; text-align: center;
}
.select {
  width: 100%; padding: .8rem 1rem;
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  font-family: var(--font-body); font-size: 1rem;
  background: var(--bg-card); color: var(--fg);
  outline: none; cursor: pointer;
}
.select:focus { border-color: var(--primary); }

/* ── Badges ── */
.badge {
  display: inline-block; padding: .2rem .7rem;
  border-radius: 2rem; font-size: .7rem;
  font-family: var(--font-display); font-weight: 700;
  text-transform: uppercase; letter-spacing: .06em;
}
.badge.lobby  { background: hsl(42,85%,90%); color: hsl(42,85%,30%); }
.badge.active { background: hsl(142,55%,88%); color: hsl(142,55%,25%); }
.badge.ended  { background: var(--muted); color: var(--muted-fg); }

/* ── Alerts ── */
.error { color: var(--secondary); font-size: .9rem; margin-top: .5rem; padding: .5rem .75rem; background: hsl(350,55%,96%); border-radius: var(--radius); border-left: 3px solid var(--secondary); }
.info  { color: hsl(185,90%,25%); font-size: .9rem; margin-top: .5rem; padding: .5rem .75rem; background: hsl(185,90%,92%); border-radius: var(--radius); }

/* ── Gradient text ── */
.text-gradient {
  background: var(--gradient-warm);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ── Hero ── */
.hero {
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  padding: 3rem 1.5rem; text-align: center;
}
.hero h1 { font-size: 2.2rem; margin-bottom: .5rem; }
.hero p { color: var(--muted-fg); margin-bottom: 2.5rem; font-size: 1.1rem; }

/* ── Progress ── */
.progress-bar { background: var(--muted); border-radius: 2rem; height: 10px; overflow: hidden; margin: .75rem 0; }
.progress-fill { background: var(--gradient-warm); height: 100%; border-radius: 2rem; transition: width .5s ease; }

/* ── Fragment display ── */
.fragment-box {
  background: var(--gradient-warm);
  color: var(--primary-fg); border-radius: var(--radius);
  padding: 2rem; text-align: center; margin: 1rem 0;
}
.fragment-box .label-sm {
  font-family: var(--font-display); font-size: .6rem;
  text-transform: uppercase; letter-spacing: .15em;
  color: rgba(0,0,0,.45); margin-bottom: .5rem;
}
.fragment-value {
  font-family: var(--font-display);
  font-size: 3rem; font-weight: 900;
  letter-spacing: .18em; color: var(--primary-fg);
}

/* ── Code display ── */
.code-display {
  font-family: var(--font-display);
  font-size: 2.2rem; font-weight: 900; letter-spacing: .25em;
  color: var(--primary); text-align: center; padding: 1rem;
  background: hsl(42,85%,95%); border-radius: var(--radius);
  border: 2px dashed var(--primary);
}

/* ── Session code ── */
.session-code {
  font-family: var(--font-display);
  font-size: 2rem; font-weight: 900; letter-spacing: .25em;
  text-align: center; padding: 1rem;
  background: var(--muted); border-radius: var(--radius);
  border: 1px solid var(--border);
}

/* ── Top bar ── */
.top-bar {
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  padding: 1rem 1.5rem;
  display: flex; align-items: center; gap: 1rem;
}
.top-bar a { color: var(--muted-fg); text-decoration: none; font-size: 1.2rem; }
.top-bar h2 { font-size: .8rem; color: var(--fg); }

/* ── Team card ── */
.team-card {
  border-radius: var(--radius); padding: 1.25rem;
  border: 2px solid transparent; transition: box-shadow .2s;
  background: var(--bg-card);
  box-shadow: var(--shadow-card);
}
.team-card:hover { box-shadow: var(--shadow-card-hover); }
.team-members { display: flex; flex-wrap: wrap; gap: .3rem; margin-top: .5rem; }
.member-chip {
  background: var(--muted); padding: .2rem .6rem;
  border-radius: 2rem; font-size: .82rem; font-weight: 600;
  font-family: var(--font-display); letter-spacing: .03em; font-size: .65rem;
}

/* ── Responsive grid ── */
.team-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 1rem; }

/* ── QR ── */
.qr-img { width: 140px; height: 140px; border-radius: var(--radius); }

/* ── Util ── */
.text-center { text-align: center; }
.mt-1 { margin-top: .5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }
.mb-1 { margin-bottom: .5rem; }
.mb-2 { margin-bottom: 1rem; }
.flex { display: flex; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.gap-1 { gap: .5rem; }
.muted { color: var(--muted-fg); font-size: .9rem; }
.hidden { display: none !important; }