/* =========================================================
   Classroom Arcade — design system
   Palette: chalkboard green + chalk yellow + paper + coral
   Display: Fraunces / Body: Inter / Utility & codes: IBM Plex Mono
   Signature: "hall pass" ticket cards with perforated notches
   ========================================================= */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,500;9..144,600;9..144,700&family=Inter:wght@400;500;600;700&family=IBM+Plex+Mono:wght@400;500;600&display=swap');

:root{
  --paper: #FBF8F2;
  --paper-dim: #F3EEE1;
  --line: #DDD3BC;
  --ink: #22314A;
  --ink-soft: #57657f;
  --green-900: #16302B;
  --green-700: #234A40;
  --green-600: #2F6255;
  --yellow: #F2C14E;
  --yellow-dark: #D9A62E;
  --coral: #E4572E;
  --coral-dark: #C43F1B;
  --white: #FFFFFF;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 8px 24px rgba(22, 48, 43, 0.12);
  --shadow-lg: 0 20px 50px rgba(22, 48, 43, 0.22);
  font-size: 16px;
}

*, *::before, *::after{ box-sizing: border-box; }
html, body{ height: 100%; }
body{
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: 'Inter', system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, .display{
  font-family: 'Fraunces', Georgia, serif;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--green-900);
  margin: 0 0 .35em;
}
h1{ font-size: 2rem; }
h2{ font-size: 1.4rem; }
h3{ font-size: 1.1rem; }
p{ margin: 0 0 1em; color: var(--ink-soft); line-height: 1.55; }
a{ color: var(--green-700); }
code, .mono{ font-family: 'IBM Plex Mono', monospace; }
button{ font-family: inherit; }

:focus-visible{
  outline: 3px solid var(--yellow-dark);
  outline-offset: 2px;
}

/* ---------- Buttons ---------- */
.btn{
  display: inline-flex; align-items: center; justify-content: center; gap: .5em;
  font-weight: 600; font-size: .95rem;
  padding: .65em 1.2em;
  border-radius: 999px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform .12s ease, box-shadow .12s ease, background .15s ease;
  white-space: nowrap;
}
.btn:active{ transform: translateY(1px); }
.btn-primary{ background: var(--green-900); color: var(--paper); }
.btn-primary:hover{ background: var(--green-700); }
.btn-accent{ background: var(--yellow); color: var(--green-900); }
.btn-accent:hover{ background: var(--yellow-dark); }
.btn-ghost{ background: transparent; color: var(--green-900); border-color: var(--line); }
.btn-ghost:hover{ background: var(--paper-dim); }
.btn-danger{ background: var(--coral); color: var(--white); }
.btn-danger:hover{ background: var(--coral-dark); }
.btn-sm{ padding: .4em .9em; font-size: .82rem; }
.btn:disabled{ opacity: .5; cursor: not-allowed; }

/* ---------- Login ---------- */
.login-wrap{
  min-height: 100vh;
  display: grid; place-items: center;
  background:
    radial-gradient(circle at 15% 20%, rgba(242,193,78,0.10), transparent 40%),
    radial-gradient(circle at 85% 80%, rgba(242,193,78,0.08), transparent 45%),
    var(--green-900);
  padding: 24px;
}
.login-card{
  width: 100%; max-width: 400px;
  background: var(--paper);
  border-radius: 22px;
  box-shadow: var(--shadow-lg);
  padding: 40px 34px 34px;
  position: relative;
  overflow: hidden;
}
.login-card::before{
  content: "";
  position: absolute; top: 0; left: 0; right: 0; height: 8px;
  background: repeating-linear-gradient(90deg, var(--yellow) 0 18px, transparent 18px 26px);
}
.login-brand{ display:flex; align-items:center; gap:.6em; margin-bottom: 22px; }
.login-brand .mark{
  width: 40px; height: 40px; border-radius: 10px;
  background: var(--green-900); color: var(--yellow);
  display: grid; place-items: center; font-family: 'Fraunces', serif; font-weight: 700; font-size: 1.2rem;
}
.login-brand span{ font-family:'Fraunces', serif; font-weight:600; font-size:1.15rem; color: var(--green-900); }
.field{ margin-bottom: 16px; }
.field label{ display:block; font-size: .82rem; font-weight: 600; color: var(--ink-soft); margin-bottom: 6px; }
.field input, .field select, .field textarea{
  width: 100%; padding: .7em .85em;
  border: 1.5px solid var(--line); border-radius: var(--radius-sm);
  background: var(--white); color: var(--ink); font-size: .95rem;
  font-family: inherit;
}
.field input:focus, .field select:focus, .field textarea:focus{ border-color: var(--green-600); }
.error-msg{ background: #FBEAE3; color: var(--coral-dark); border: 1px solid #F1C3AF; padding: .7em .9em; border-radius: var(--radius-sm); font-size: .85rem; margin-bottom: 14px; }
.hint-msg{ background: #EFF6F1; color: var(--green-700); border: 1px solid #CFE4D6; padding: .7em .9em; border-radius: var(--radius-sm); font-size: .85rem; margin-bottom: 14px; }

/* ---------- App shell ---------- */
.app{ display: flex; min-height: 100vh; }
.sidebar{
  width: 236px; flex-shrink: 0; background: var(--green-900); color: var(--paper);
  display: flex; flex-direction: column; padding: 22px 16px;
  position: sticky; top: 0; height: 100vh;
}
.sidebar .brand{ display:flex; align-items:center; gap:.6em; padding: 0 6px 20px; }
.sidebar .brand .mark{
  width: 34px; height: 34px; border-radius: 9px; background: var(--yellow); color: var(--green-900);
  display:grid; place-items:center; font-family:'Fraunces',serif; font-weight:700;
}
.sidebar .brand span{ font-family:'Fraunces', serif; font-weight: 600; }
.sidebar nav{ display:flex; flex-direction:column; gap: 4px; flex: 1; }
.sidebar nav button{
  text-align:left; background: transparent; border: none; color: rgba(251,248,242,0.75);
  padding: .7em .9em; border-radius: var(--radius-sm); font-size: .92rem; font-weight: 500;
  cursor: pointer; display:flex; align-items:center; gap:.6em;
}
.sidebar nav button:hover{ background: rgba(251,248,242,0.08); color: var(--paper); }
.sidebar nav button.active{ background: var(--yellow); color: var(--green-900); font-weight:600; }
.sidebar .who{ font-size: .78rem; color: rgba(251,248,242,0.55); padding: 0 6px 10px; border-top: 1px solid rgba(251,248,242,0.12); padding-top: 14px; margin-top: 8px; }
.sidebar .who strong{ display:block; color: var(--paper); font-size: .88rem; }
.sidebar .logout{ margin-top: 8px; }

.main{ flex: 1; padding: 34px 42px; max-width: 1180px; }
.topbar{ display:flex; align-items:flex-start; justify-content:space-between; margin-bottom: 26px; gap: 16px; flex-wrap: wrap; }
.topbar p{ margin: 0; }

.banner{
  padding: 14px 18px; border-radius: var(--radius-sm); margin-bottom: 22px;
  font-weight: 600; font-size: .9rem; display:flex; align-items:center; gap:.6em;
}
.banner-maint{ background: var(--coral); color: var(--white); }
.banner-warn{ background: #FDEFD8; color: #8A5A0C; border: 1px solid #F3D9A4; }

/* ---------- Cards / panels ---------- */
.panel{
  background: var(--white); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 24px; margin-bottom: 22px; box-shadow: var(--shadow);
}
.panel-head{ display:flex; justify-content:space-between; align-items:center; margin-bottom: 16px; gap: 12px; flex-wrap: wrap;}

.grid{ display:grid; gap: 18px; }
.grid-3{ grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); }
.grid-2{ grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); }

.stat{
  background: var(--paper-dim); border-radius: var(--radius-sm); padding: 16px 18px;
}
.stat .num{ font-family:'Fraunces',serif; font-size: 1.9rem; color: var(--green-900); font-weight: 700; }
.stat .label{ font-size: .82rem; color: var(--ink-soft); text-transform: uppercase; letter-spacing: .04em; }

/* ---------- Ticket / hall-pass cards (signature element) ---------- */
.ticket{
  position: relative;
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  display: flex;
  overflow: visible;
  border: 1px solid var(--line);
}
.ticket-stub{
  flex: 1; padding: 18px 18px 16px; min-width: 0;
}
.ticket-tab{
  width: 54px; flex-shrink: 0;
  background: var(--green-900);
  border-radius: 0 var(--radius) var(--radius) 0;
  display:flex; align-items:center; justify-content:center;
  position: relative;
}
.ticket-tab span{
  color: var(--yellow); font-family:'IBM Plex Mono', monospace; font-weight:600; font-size:.72rem;
  writing-mode: vertical-rl; letter-spacing: .08em; text-transform: uppercase;
}
.ticket::before, .ticket::after{
  content:""; position:absolute; width: 18px; height: 18px; border-radius: 50%;
  background: var(--paper); left: calc(100% - 72px);
  border: 1px solid var(--line);
}
.ticket::before{ top: -9px; }
.ticket::after{ bottom: -9px; }
.ticket-divider{
  position:absolute; top: 9px; bottom: 9px; left: calc(100% - 63px); width: 0;
  border-left: 2px dashed var(--line);
}
.ticket-title{ font-family:'Fraunces', serif; font-weight:600; font-size: 1.05rem; color: var(--green-900); margin-bottom: 4px; }
.ticket-meta{ font-size: .78rem; color: var(--ink-soft); margin-bottom: 12px; }
.ticket-actions{ display:flex; gap: 8px; flex-wrap: wrap; align-items:center; }
.ticket.is-locked{ opacity: .6; }
.ticket.is-locked .ticket-tab{ background: var(--coral); }
.badge{
  display:inline-flex; align-items:center; gap:.35em; font-size: .72rem; font-weight: 700;
  padding: .25em .7em; border-radius: 999px; text-transform: uppercase; letter-spacing: .03em;
}
.badge-locked{ background: #FBEAE3; color: var(--coral-dark); }
.badge-live{ background: #E3F2E7; color: var(--green-700); }
.badge-role{ background: var(--paper-dim); color: var(--ink-soft); }

/* ---------- Tables ---------- */
table{ width: 100%; border-collapse: collapse; font-size: .9rem; }
th{ text-align:left; font-size: .74rem; text-transform: uppercase; letter-spacing:.05em; color: var(--ink-soft); padding: 10px 12px; border-bottom: 2px solid var(--line); }
td{ padding: 11px 12px; border-bottom: 1px solid var(--line); vertical-align: middle; }
tr:last-child td{ border-bottom: none; }
.table-wrap{ overflow-x: auto; }

.code-pill{
  font-family: 'IBM Plex Mono', monospace; background: var(--green-900); color: var(--yellow);
  padding: .3em .7em; border-radius: 8px; font-weight: 600; letter-spacing: .06em; font-size: .85rem;
}

/* ---------- Toggles / checkboxes ---------- */
.switch{ position: relative; display:inline-block; width: 42px; height: 24px; flex-shrink:0; }
.switch input{ opacity:0; width:0; height:0; }
.switch .slider{ position:absolute; inset:0; background: var(--line); border-radius: 999px; transition:.15s; cursor:pointer; }
.switch .slider::before{ content:""; position:absolute; width:18px; height:18px; left:3px; top:3px; background:var(--white); border-radius:50%; transition:.15s; }
.switch input:checked + .slider{ background: var(--green-600); }
.switch input:checked + .slider::before{ transform: translateX(18px); }

/* ---------- Modal (game player) ---------- */
.modal-overlay{
  position: fixed; inset: 0; background: rgba(22,48,43,0.85);
  display:flex; align-items:center; justify-content:center; z-index: 200; padding: 20px;
}
.player-frame{
  width: 100%; height: 100%; max-width: 1200px; max-height: 860px;
  background: var(--white); border-radius: var(--radius); overflow:hidden;
  display:flex; flex-direction:column; box-shadow: var(--shadow-lg);
}
.player-bar{ display:flex; align-items:center; justify-content:space-between; padding: 10px 16px; background: var(--green-900); color: var(--paper); }
.player-bar strong{ font-family:'Fraunces',serif; }
.player-frame iframe{ flex: 1; border: none; width: 100%; }

.form-modal{
  background: var(--white); border-radius: var(--radius); padding: 26px 28px; width: 100%; max-width: 460px;
  max-height: 88vh; overflow-y: auto; box-shadow: var(--shadow-lg);
}

.empty-state{ text-align:center; padding: 40px 20px; color: var(--ink-soft); }
.empty-state h3{ color: var(--green-900); }

.toast{
  position: fixed; bottom: 22px; right: 22px; background: var(--green-900); color: var(--paper);
  padding: 12px 18px; border-radius: var(--radius-sm); box-shadow: var(--shadow-lg); font-size: .9rem;
  z-index: 400; max-width: 320px;
}
.toast.err{ background: var(--coral); }

.row-inline{ display:flex; gap: 10px; align-items:center; flex-wrap: wrap; }
.spacer{ flex:1; }
.muted{ color: var(--ink-soft); font-size: .85rem; }

textarea.mono{ min-height: 120px; }

@media (max-width: 860px){
  .app{ flex-direction: column; }
  .sidebar{ width: 100%; height: auto; position: relative; flex-direction: row; align-items:center; overflow-x:auto; }
  .sidebar .brand{ padding: 0 12px 0 0; }
  .sidebar nav{ flex-direction: row; }
  .sidebar .who, .sidebar .logout{ display:none; }
  .main{ padding: 22px 18px; }
  .ticket-tab span{ writing-mode: horizontal-tb; }
}

@media (prefers-reduced-motion: reduce){
  *{ transition: none !important; animation: none !important; }
}