/* Loopstrike — "solder & verdigris" circuit-board theme.
   Deep PCB-green substrate surfaces with copper accents; matches the
   canvas world in js/sprites.js. */
:root {
  --bg:       #0c1310;
  --surface:  #121c17;
  --surface2: #18251e;
  --surface3: #203027;
  --border:   #2a3c31;
  --accent:   #e8863c;
  --accent2:  #f59f56;
  --text:     #dce9dd;
  --muted:    #74896f;
  --green:    #69db7c;
  --red:      #ff6b6b;
  --blue:     #3bc9db;
  --gold:     #ffd43b;
  --purple:   #b197fc;
  --mono:     'Cascadia Code','Fira Code','Consolas',monospace;
  --sans:     'Segoe UI',system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
[hidden]{display:none !important;}
html,body{height:100%;background:var(--bg);color:var(--text);font-family:var(--sans);font-size:14px;}
body{display:flex;flex-direction:column;overflow:hidden;}

button{
  padding:6px 14px;border-radius:6px;border:1px solid var(--border);
  background:var(--surface2);color:var(--text);font-family:var(--sans);
  font-size:13px;cursor:pointer;transition:border-color .12s,color .12s,background .12s;
  white-space:nowrap;
}
button:hover{border-color:var(--accent);color:var(--accent);}
button.primary{background:var(--accent);border-color:var(--accent);color:#1c0f02;font-weight:700;}
button.primary:hover{background:var(--accent2);border-color:var(--accent2);color:#1c0f02;}
button.ghost{background:transparent;}
button.danger:hover{border-color:var(--red);color:var(--red);}
button.tiny{padding:2px 8px;font-size:11px;}
button.right{margin-left:auto;}
button:disabled{opacity:.45;cursor:not-allowed;}
button:disabled:hover{border-color:var(--border);color:var(--text);}
input[type=range]{accent-color:var(--accent);}

/* ── TOPBAR ─────────────────────────────────────────── */
#topbar{
  display:flex;align-items:center;gap:12px;height:46px;flex-shrink:0;
  padding:0 14px;border-bottom:1px solid var(--border);background:var(--surface);
  z-index:10;
}
.logo{
  font-family:var(--mono);font-size:16px;font-weight:700;border:none;background:none;
  color:var(--accent);letter-spacing:-1px;user-select:none;padding:4px 6px;cursor:pointer;
}
.logo em{color:var(--muted);font-style:normal;font-weight:400;}
.topbar-right{margin-left:auto;display:flex;align-items:center;gap:10px;}
.badge{
  font-family:var(--mono);font-size:12px;padding:3px 9px;border-radius:12px;
  background:var(--surface2);border:1px solid var(--border);
}
.badge.muted{color:var(--muted);}
.badge.ok{color:var(--green);border-color:#2c4a3c;}

/* ── SCREENS ────────────────────────────────────────── */
#screens{flex:1;overflow:hidden;display:flex;}
.screen{flex:1;overflow-y:auto;padding:22px clamp(14px,4vw,48px);}
.screen[hidden]{display:none;}
.screen-head{display:flex;align-items:center;gap:14px;margin-bottom:14px;}
.screen-head h2{font-size:20px;font-family:var(--mono);color:var(--accent);}
.screen-sub{color:var(--muted);font-size:13px;line-height:1.6;max-width:640px;margin-bottom:16px;}
.back-btn{flex-shrink:0;}
.row-gap{display:flex;gap:10px;flex-wrap:wrap;}

/* ── MENU ───────────────────────────────────────────── */
#screen-menu{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:26px;}
.menu-hero{text-align:center;}
.title-big{
  font-family:var(--mono);font-size:clamp(34px,7vw,60px);font-weight:700;
  color:var(--accent);letter-spacing:-2px;
  text-shadow:0 0 34px rgba(232,134,60,.35);
}
.title-big em{color:var(--muted);font-style:normal;font-weight:400;}
.tagline{color:var(--muted);font-size:14px;margin-top:6px;max-width:440px;}
.menu-grid{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));
  gap:12px;width:min(680px,100%);
}
.menu-card{
  display:flex;flex-direction:column;align-items:flex-start;gap:4px;
  padding:16px;border-radius:10px;text-align:left;background:var(--surface);
}
.menu-card:hover{background:var(--surface2);transform:translateY(-1px);}
.mc-icon{font-size:22px;}
.mc-title{font-weight:700;font-size:15px;color:var(--text);}
.mc-sub{font-size:11.5px;color:var(--muted);}
.menu-footer{display:flex;gap:10px;}

/* ── CAMPAIGN ───────────────────────────────────────── */
.campaign-acts{display:flex;flex-direction:column;gap:22px;max-width:900px;}
.act-title{font-family:var(--mono);font-size:13px;color:var(--muted);letter-spacing:.12em;text-transform:uppercase;margin-bottom:8px;}
.mission-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:10px;}
.mission-card{
  display:flex;flex-direction:column;gap:5px;padding:12px;border-radius:9px;
  background:var(--surface);text-align:left;position:relative;
}
.mission-card:hover:not(:disabled){background:var(--surface2);}
.mission-card:disabled{opacity:.5;}
.mission-num{font-family:var(--mono);font-size:10.5px;color:var(--muted);}
.mission-nm{font-weight:700;font-size:14px;color:var(--text);}
.mission-obj{font-size:11.5px;color:var(--muted);}
.mission-stars{font-size:13px;letter-spacing:2px;color:var(--gold);}
.mission-stars .off{color:var(--surface3);}
.mission-lock{position:absolute;top:10px;right:12px;font-size:14px;}

/* ── UPGRADES ───────────────────────────────────────── */
.upgrade-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(290px,1fr));gap:10px;max-width:960px;}
.upg-card{display:flex;gap:12px;align-items:center;padding:13px;border-radius:9px;background:var(--surface);border:1px solid var(--border);}
.upg-icon{font-size:24px;flex-shrink:0;}
.upg-mid{flex:1;min-width:0;}
.upg-name{font-weight:700;font-size:13.5px;}
.upg-desc{font-size:11.5px;color:var(--muted);margin-top:2px;}
.upg-pips{margin-top:5px;display:flex;gap:3px;}
.upg-pip{width:16px;height:5px;border-radius:2px;background:var(--surface3);}
.upg-pip.on{background:var(--accent);}
.upg-buy{flex-shrink:0;}

/* ── ACHIEVEMENTS ───────────────────────────────────── */
.ach-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:10px;max-width:960px;}
.ach-card{display:flex;gap:11px;align-items:center;padding:12px;border-radius:9px;background:var(--surface);border:1px solid var(--border);}
.ach-card.locked{opacity:.42;filter:grayscale(.7);}
.ach-icon{font-size:22px;}
.ach-name{font-weight:700;font-size:13px;}
.ach-desc{font-size:11px;color:var(--muted);margin-top:1px;}

/* ── LEADERBOARD ────────────────────────────────────── */
#lb-table-wrap{overflow-x:auto;max-width:760px;}
.lb-table{width:100%;border-collapse:collapse;font-size:13px;}
.lb-table th{
  text-align:left;font-size:10.5px;text-transform:uppercase;letter-spacing:.08em;
  color:var(--muted);padding:7px 10px;border-bottom:1px solid var(--border);
}
.lb-table td{padding:7px 10px;border-bottom:1px solid var(--surface2);font-family:var(--mono);}
.lb-table tr.me td{color:var(--accent);}
.lb-table td.rank-1{color:var(--gold);}
.lb-me{
  font-family:var(--mono);font-size:13px;padding:9px 13px;margin-bottom:12px;
  background:var(--surface);border:1px solid var(--border);border-radius:8px;
  max-width:760px;
}

/* ── ACCOUNT / FORMS ────────────────────────────────── */
.auth-forms{display:flex;gap:16px;flex-wrap:wrap;}
.auth-card{
  display:flex;flex-direction:column;gap:11px;width:min(320px,100%);
  padding:18px;background:var(--surface);border:1px solid var(--border);border-radius:10px;
}
.auth-card h3{font-size:15px;font-family:var(--mono);color:var(--accent);}
.auth-card label{display:flex;flex-direction:column;gap:4px;font-size:12px;color:var(--muted);}
.auth-card input{
  padding:8px 10px;border-radius:6px;border:1px solid var(--border);
  background:var(--bg);color:var(--text);font-size:13px;font-family:var(--sans);
}
.auth-card input:focus{outline:none;border-color:var(--accent);}
.form-err{color:var(--red);font-size:12px;}

/* ── SETTINGS ───────────────────────────────────────── */
.settings-list{display:flex;flex-direction:column;gap:14px;max-width:460px;}
.setting-row{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:12px 15px;background:var(--surface);border:1px solid var(--border);border-radius:9px;
  font-size:13px;
}
.setting-row input[type=range]{width:150px;}

/* ── HELP ───────────────────────────────────────────── */
.help-body{max-width:760px;line-height:1.65;font-size:13.5px;}
.help-body h3{font-family:var(--mono);color:var(--accent);margin:22px 0 8px;font-size:15px;}
.help-body p{color:var(--text);margin-bottom:8px;}
.help-body code,.help-body pre{
  font-family:var(--mono);font-size:12.5px;background:var(--surface);
  border:1px solid var(--border);border-radius:5px;
}
.help-body code{padding:1px 5px;}
.help-body pre{padding:12px;overflow-x:auto;margin:8px 0 14px;line-height:1.55;}
.help-body pre code{border:none;background:none;padding:0;}
.help-body table{border-collapse:collapse;margin:8px 0 14px;font-size:12.5px;}
.help-body th,.help-body td{border:1px solid var(--border);padding:5px 10px;text-align:left;}
.help-body th{color:var(--muted);font-size:11px;text-transform:uppercase;}
.help-body .muted{color:var(--muted);}
.help-body td canvas{display:block;margin:0 auto;}
.legend-row{display:flex;gap:18px;flex-wrap:wrap;margin:10px 0 14px;}
.legend-item{
  display:flex;align-items:center;gap:8px;padding:7px 12px;font-size:12px;
  background:var(--surface);border:1px solid var(--border);border-radius:8px;
}

/* ── GAME SCREEN ────────────────────────────────────── */
.game-screen{padding:0;display:flex;flex-direction:column;overflow:hidden;}
.game-topbar{
  display:flex;align-items:center;gap:14px;height:48px;flex-shrink:0;
  padding:0 12px;border-bottom:1px solid var(--border);background:var(--surface);
}
.mission-title-wrap{display:flex;align-items:center;gap:14px;min-width:0;flex:1;}
.mission-name{font-family:var(--mono);font-weight:700;font-size:13px;color:var(--accent);white-space:nowrap;}
.objective-wrap{display:flex;align-items:center;gap:8px;min-width:0;flex:1;max-width:380px;}
.objective-track{flex:1;height:5px;border-radius:3px;background:var(--surface2);overflow:hidden;min-width:60px;}
#objective-fill{height:100%;width:0;border-radius:3px;background:var(--gold);transition:width .3s;}
.objective-label{font-size:11px;color:var(--muted);white-space:nowrap;font-family:var(--mono);}
.game-controls{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.speed-row{display:flex;align-items:center;gap:6px;color:var(--muted);font-size:11px;}
.speed-row input[type=range]{width:72px;}

.game-app{display:flex;flex-direction:column;flex:1;overflow:hidden;}
.main-row{display:flex;flex:1;overflow:hidden;}

.editor-panel{
  width:380px;flex-shrink:0;display:flex;flex-direction:column;
  border-right:1px solid var(--border);background:var(--surface);
}
.panel-title{
  display:flex;align-items:center;justify-content:space-between;
  font-size:10px;font-weight:700;letter-spacing:.1em;
  text-transform:uppercase;color:var(--muted);
  padding:6px 10px;border-bottom:1px solid var(--border);user-select:none;
}
.editor-wrap{flex:1;display:flex;overflow:hidden;}
#line-numbers{
  padding:10px 6px 10px 10px;font-family:var(--mono);font-size:12.5px;
  line-height:1.55;color:var(--muted);text-align:right;
  user-select:none;min-width:34px;border-right:1px solid var(--border);overflow:hidden;
}
#editor-container{position:relative;flex:1;overflow:hidden;}
#highlight-layer{
  position:absolute;inset:0;padding:10px;
  font-family:var(--mono);font-size:12.5px;line-height:1.55;
  white-space:pre;tab-size:2;pointer-events:none;overflow:auto;
  scrollbar-width:none;background:var(--bg);color:var(--text);
}
#highlight-layer::-webkit-scrollbar{display:none;}
#editor{
  position:absolute;inset:0;padding:10px;
  background:transparent;color:transparent;caret-color:var(--text);
  font-family:var(--mono);font-size:12.5px;line-height:1.55;
  border:none;outline:none;resize:none;overflow:auto;
  white-space:pre;tab-size:2;
}
.hl-kw{color:var(--blue);}
.hl-str{color:var(--green);}
.hl-cmt{color:var(--muted);font-style:italic;}
.hl-num{color:var(--accent);}
.hl-fn{color:#e5c07b;}

.game-panel{
  flex:1;display:flex;flex-direction:column;align-items:center;
  padding:10px 14px;gap:8px;overflow:auto;position:relative;
}
.stats-bar{display:flex;align-items:center;gap:13px;width:100%;max-width:560px;flex-shrink:0;flex-wrap:wrap;}
.stat{display:flex;align-items:center;gap:5px;}
.slbl{font-size:10px;text-transform:uppercase;letter-spacing:.07em;color:var(--muted);}
.sval{font-family:var(--mono);font-size:13px;font-weight:700;color:var(--text);min-width:20px;}
.sval.or{color:var(--accent);}
.sval.rd{color:var(--red);}
.hp-wrap{display:flex;align-items:center;gap:6px;flex:1;min-width:140px;}
.hp-track{flex:1;height:5px;border-radius:3px;background:var(--surface2);overflow:hidden;}
#hp-fill{height:100%;width:100%;border-radius:3px;background:var(--blue);transition:width .25s,background .25s;}
.canvas-wrap{position:relative;flex-shrink:0;max-width:100%;}
#canvas{border-radius:6px;border:1px solid var(--border);display:block;max-width:100%;height:auto;}

.game-overlay{
  position:absolute;inset:0;display:flex;flex-direction:column;
  align-items:center;justify-content:center;gap:12px;
  background:rgba(12,19,16,.93);z-index:20;border-radius:6px;
  text-align:center;padding:20px;
}
.game-overlay h2{font-size:22px;color:var(--accent);font-family:var(--mono);}
.game-overlay h2.lose{color:var(--red);}
.game-overlay h2.win{color:var(--green);}
.game-overlay p{color:var(--muted);font-size:13px;max-width:320px;line-height:1.6;}
.big-score{font-family:var(--mono);font-size:46px;font-weight:700;color:var(--text);line-height:1;}
.score-sub{color:var(--muted);font-size:12px;}
.stars-row{font-size:30px;letter-spacing:6px;color:var(--gold);}
.stars-row .off{color:var(--surface3);}
.overlay-btns{display:flex;gap:10px;margin-top:6px;flex-wrap:wrap;justify-content:center;}
.reward-line{font-size:13px;color:var(--green);font-family:var(--mono);}
.submit-line{font-size:12px;font-family:var(--mono);color:var(--muted);}
.submit-line.ok{color:var(--green);}
.submit-line.err{color:var(--red);}

.console-panel{
  height:110px;flex-shrink:0;border-top:1px solid var(--border);
  background:var(--surface);display:flex;flex-direction:column;overflow:hidden;
  transition:height .2s ease;
}
.console-panel.expanded{height:260px;}
.console-head{display:flex;align-items:center;gap:8px;padding:4px 10px;border-bottom:1px solid var(--border);}
.console-label{font-size:10px;text-transform:uppercase;letter-spacing:.1em;color:var(--muted);}
.dot{width:6px;height:6px;border-radius:50%;background:var(--border);transition:background .2s;}
.dot.on{background:var(--red);}
#console-log{flex:1;overflow-y:auto;padding:4px 10px;font-family:var(--mono);font-size:11.5px;line-height:1.5;}
.lg{display:flex;gap:8px;}
.lt{color:var(--muted);flex-shrink:0;}
.lm{color:var(--text);word-break:break-word;}
.lm.err{color:var(--red);}
.lm.ok{color:var(--green);}
.lm.say{color:var(--accent);}
.lm.warn{color:#e8a838;}
.console-panel.expanded #btn-expand-console{transform:rotate(180deg);}

/* ── TOASTS / MODAL ─────────────────────────────────── */
#toasts{position:fixed;bottom:18px;right:18px;display:flex;flex-direction:column;gap:8px;z-index:100;}
.toast{
  padding:10px 15px;border-radius:8px;background:var(--surface2);
  border:1px solid var(--border);font-size:13px;max-width:320px;
  animation:toast-in .25s ease;box-shadow:0 6px 22px rgba(0,0,0,.4);
}
.toast.ok{border-color:#2c4a3c;color:var(--green);}
.toast.err{border-color:#5b2b2b;color:var(--red);}
.toast.ach{border-color:#5b4a1e;color:var(--gold);}
@keyframes toast-in{from{opacity:0;transform:translateY(8px);}to{opacity:1;transform:none;}}

#modal-root{position:fixed;inset:0;z-index:90;}
#modal-root[hidden]{display:none;}
.modal-backdrop{position:absolute;inset:0;background:rgba(0,0,0,.6);}
.modal-card{
  position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);
  width:min(680px,92vw);max-height:84vh;overflow-y:auto;
  background:var(--surface);border:1px solid var(--border);border-radius:12px;
  padding:22px;box-shadow:0 18px 60px rgba(0,0,0,.55);
}

/* ── PANEL TABS (mobile) ────────────────────────────── */
#panel-tabs{display:none;}
@media(max-width:820px){
  #panel-tabs{display:flex;height:40px;flex-shrink:0;border-bottom:1px solid var(--border);background:var(--surface);}
  .tab-btn{
    flex:1;border:none;border-radius:0;border-right:1px solid var(--border);
    background:transparent;color:var(--muted);font-size:13px;padding:0;
  }
  .tab-btn:last-child{border-right:none;}
  .tab-btn.active{color:var(--accent);background:var(--surface2);border-bottom:2px solid var(--accent);}
  .editor-panel{width:100%;flex:1;border-right:none;}
  .game-app.show-code .game-panel,.game-app.show-code .console-panel{display:none;}
  .game-app.show-game .editor-panel,.game-app.show-game .console-panel{display:none;}
  .game-app.show-console .editor-panel,.game-app.show-console .game-panel{display:none;}
  .game-app.show-console .console-panel{flex:1;height:auto;}
  .speed-row{display:none;}
  .objective-label{display:none;}
  .mission-name{display:none;}
}
@media(prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;transition-duration:.01ms !important;}
}