/* Bundled fonts (Noto Sans / Noto Sans Thai, SIL OFL) — no Google Fonts CDN. */
@font-face { font-family:'Noto Sans'; src:url('assets/fonts/NotoSans.ttf') format('truetype'); font-weight:100 900; font-display:swap; }
@font-face { font-family:'Noto Sans Thai'; src:url('assets/fonts/NotoSansThai.ttf') format('truetype'); font-weight:100 900; font-display:swap; }

:root { --navy:#101b3d; --ink:#17213f; --muted:#66708f; --paper:#f7f8fc; --line:#dfe3ef; --lime:#d6f36b; --cyan:#8be7df; --coral:#ff806d; --violet:#7768f5; --white:#fff; }
* { box-sizing:border-box; }
body { margin:0; background:var(--paper); color:var(--ink); font-family:'Noto Sans Thai', 'Noto Sans', 'Trebuchet MS', Arial, sans-serif; }
button, input { font:inherit; }
button { cursor:pointer; border:0; }
.app-shell { min-height:100vh; background:radial-gradient(circle at 85% 8%, rgba(139,231,223,.36), transparent 28%), radial-gradient(circle at 12% 90%, rgba(214,243,107,.28), transparent 25%), var(--paper); }
.topbar { height:76px; padding:0 5vw; display:flex; align-items:center; justify-content:space-between; background:var(--navy); color:#fff; }
.brand { display:flex; gap:12px; align-items:center; font-weight:700; letter-spacing:-.03em; }
.brand-mark { width:38px; height:38px; border-radius:12px 4px 12px 4px; background:var(--lime); color:var(--navy); display:grid; place-items:center; font-weight:700; font-family:'DM Mono'; }
.brand small { display:block; color:var(--cyan); font:11px 'DM Mono'; letter-spacing:.08em; text-transform:uppercase; }
.container { width:min(1180px, 90vw); margin:0 auto; }
.hero { padding:72px 0 48px; display:grid; grid-template-columns:1.15fr .85fr; gap:55px; align-items:center; }
.eyebrow { color:var(--violet); font:500 12px 'DM Mono'; letter-spacing:.12em; text-transform:uppercase; }
h1 { font-size:clamp(42px, 6vw, 76px); line-height:.94; letter-spacing:-.07em; max-width:720px; margin:14px 0 24px; }
h2 { font-size:clamp(24px, 3vw, 36px); letter-spacing:-.05em; margin:0 0 12px; }
p { color:var(--muted); line-height:1.6; }
.hero-copy p { max-width:570px; font-size:18px; }
.hero-art { min-height:340px; background:var(--navy); border-radius:30px; padding:24px; position:relative; overflow:hidden; box-shadow:18px 18px 0 var(--cyan); }
.hero-art:before { content:''; position:absolute; inset:28px; border:1px dashed rgba(255,255,255,.3); border-radius:20px; }
.terminal { position:absolute; inset:74px 40px 35px; background:#202b52; border:1px solid #596488; border-radius:14px; padding:18px; font:13px/2 'DM Mono'; color:var(--cyan); }
.terminal b { color:var(--lime); }
.cta, .secondary, .danger { border-radius:10px; padding:14px 20px; font-weight:700; transition:transform .2s, box-shadow .2s; }
.cta { background:var(--navy); color:#fff; box-shadow:4px 4px 0 var(--lime); }
.secondary { background:#eef0f8; color:var(--ink); }
.danger { background:#ffe5e0; color:#a33d31; }
.cta:hover, .secondary:hover, .danger:hover { transform:translateY(-2px); }
.section { padding:35px 0 75px; }
.section-head { display:flex; justify-content:space-between; align-items:end; gap:20px; margin-bottom:24px; }
.mission-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:14px; }
.mission-card, .panel { background:rgba(255,255,255,.82); border:1px solid var(--line); border-radius:16px; padding:21px; }
.mission-card { min-height:200px; position:relative; overflow:hidden; }
.mission-card:after { content:attr(data-num); position:absolute; right:14px; bottom:-12px; font:700 80px 'DM Mono'; color:#eef0f8; z-index:-1; }
.mission-icon { font-size:27px; }
.mission-card h3 { margin:13px 0 5px; }
.tag { display:inline-block; padding:5px 8px; border-radius:5px; font:11px 'DM Mono'; background:#eef0f8; color:var(--violet); }
.login-wrap { min-height:calc(100vh - 76px); display:grid; place-items:center; padding:30px; }
.login-card { width:min(430px,100%); padding:34px; background:#fff; border:1px solid var(--line); border-radius:20px; box-shadow:12px 12px 0 var(--cyan); }
.field { display:grid; gap:7px; margin:17px 0; font-weight:600; }
.field span { font-size:13px; }
input { border:1px solid var(--line); border-radius:8px; padding:13px; color:var(--ink); background:#fcfcff; outline:none; }
input:focus { border-color:var(--violet); box-shadow:0 0 0 3px #e5e2ff; }
.error { color:#b94235; font-size:13px; min-height:20px; }
.lobby { padding:50px 0; }
.rules { display:grid; grid-template-columns:1fr 1fr; gap:16px; margin:22px 0; }
.rules ol { margin:0; padding-left:20px; color:var(--muted); line-height:2; }
.game-layout { padding:22px 0 50px; }
.game-top { display:flex; gap:14px; align-items:center; margin-bottom:20px; }
.progress { display:flex; gap:7px; flex:1; }
.step { width:40px; height:32px; border-radius:7px; display:grid; place-items:center; background:#e7e9f1; color:var(--muted); font:12px 'DM Mono'; }
.step.done { background:var(--lime); color:var(--navy); }.step.current { background:var(--violet); color:#fff; }
.timer { background:var(--navy); color:#fff; border-radius:9px; padding:10px 14px; font:500 15px 'DM Mono'; white-space:nowrap; }
.game-grid { display:grid; grid-template-columns:280px 1fr; gap:18px; }
.side-panel { display:grid; gap:14px; align-content:start; }
.side-panel .panel { padding:18px; }.palette { display:flex; flex-wrap:wrap; gap:8px; margin-top:14px; }
.block { background:#e4e1ff; color:#5549c5; padding:10px 12px; border-radius:7px; font:12px 'DM Mono'; border:1px solid #cbc6ff; }
.block:hover { background:#d5d0ff; }.block.active { background:var(--violet); color:#fff; }
.board { min-height:500px; background:var(--navy); color:#fff; border-radius:18px; padding:25px; position:relative; overflow:hidden; }
.board:before { content:''; position:absolute; inset:0; opacity:.15; background-image:linear-gradient(#fff 1px,transparent 1px),linear-gradient(90deg,#fff 1px,transparent 1px); background-size:42px 42px; }
.board-content { position:relative; z-index:1; }.board-head { display:flex; justify-content:space-between; align-items:start; margin-bottom:24px; }.board h2 { color:#fff; }.board p { color:#b9c4e2; }
.target { width:100%; min-height:230px; border:1px dashed #62709b; border-radius:12px; display:grid; place-items:center; font-size:65px; background:rgba(255,255,255,.03); }
.code-area { margin-top:16px; background:#fff; border-radius:12px; padding:16px; color:var(--ink); min-height:96px; }.code-area strong { font:12px 'DM Mono'; color:var(--muted); }.selected-blocks { display:flex; flex-wrap:wrap; gap:7px; margin-top:12px; }.selected-blocks span { background:var(--lime); padding:8px 10px; border-radius:6px; font:12px 'DM Mono'; }
.game-actions { display:flex; justify-content:space-between; align-items:center; margin-top:17px; }
.modal-backdrop { position:fixed; inset:0; background:rgba(16,27,61,.55); display:grid; place-items:center; padding:20px; z-index:5; }.modal { width:min(430px,100%); padding:28px; background:#fff; border-radius:16px; }.modal-actions { display:flex; justify-content:flex-end; gap:10px; margin-top:22px; }
.certificate-page { padding:45px 0 70px; }.cert-sheet { max-width:900px; margin:0 auto; background:#fff; border:10px solid var(--navy); padding:44px; position:relative; box-shadow:16px 16px 0 var(--lime); }.cert-sheet:before { content:''; position:absolute; inset:15px; border:1px solid var(--cyan); pointer-events:none; }.cert-inner { position:relative; text-align:center; }.cert-kicker { font:12px 'DM Mono'; letter-spacing:.16em; color:var(--violet); }.cert-title { font-size:clamp(32px,5vw,58px); margin:18px 0 6px; letter-spacing:-.06em; }.cert-name { font-size:clamp(25px,4vw,45px); font-weight:700; color:var(--violet); margin:20px 0; }.cert-meta { display:flex; justify-content:center; gap:35px; flex-wrap:wrap; margin:24px 0; }.cert-meta strong { display:block; font:18px 'DM Mono'; margin-top:5px; }.verified { display:inline-flex; gap:7px; align-items:center; color:#28755e; font:12px 'DM Mono'; background:#e2f6ee; padding:7px 10px; border-radius:5px; }.qr { margin:20px auto 0; width:105px; height:105px; image-rendering:pixelated; border:7px solid #fff; box-shadow:0 0 0 1px var(--line); }
@media (max-width:800px) { .hero { grid-template-columns:1fr; padding-top:45px; gap:30px; }.hero-art { min-height:260px; box-shadow:10px 10px 0 var(--cyan); }.mission-grid { grid-template-columns:1fr 1fr; }.game-grid, .rules { grid-template-columns:1fr; }.board { min-height:440px; }.cert-sheet { padding:30px 18px; border-width:7px; } }
@media (max-width:520px) { .topbar { padding:0 20px; }.topbar .brand span { display:none; }.mission-grid { grid-template-columns:1fr; }.section-head { display:block; }.progress { gap:3px; }.step { width:30px; }.timer { font-size:12px; padding:9px; }.game-top { align-items:stretch; }.game-actions { gap:10px; align-items:stretch; flex-direction:column; }.game-actions button { width:100%; } }

/* -------------------------------------------------------------------
   Backend-integrated additions: nav, timer states, real Blockly engine,
   mission outcome cards, certificate logo, admin dashboard.
   ------------------------------------------------------------------- */
.topnav { display:flex; align-items:center; gap:16px; }
.topnav a { color:#cfd6ee; text-decoration:none; font:600 13px 'DM Mono'; letter-spacing:.03em; }
.topnav a:hover { color:#fff; }

.step.locked { opacity:.5; }
.timer.warning { background:#8a6d00; }
.timer.critical { background:var(--coral); color:#3a1208; animation:pulse 1.4s ease-in-out infinite; }
@keyframes pulse { 0%,100% { opacity:1; } 50% { opacity:.72; } }

.timebar { height:6px; background:#e9ebf3; border-radius:5px; margin-top:14px; overflow:hidden; }
.timebar-fill { height:100%; background:var(--lime); border-radius:5px; transition:width .3s linear; }

.coe-logo { max-width:220px; width:60%; display:block; margin:0 auto; filter:drop-shadow(0 8px 0 rgba(0,0,0,.15)); }
.hero-art { display:grid; place-items:center; }

.engine-mount { display:grid; grid-template-columns:1fr 1fr; gap:14px; margin-top:16px; min-height:420px; }
.engine-canvas-wrap { background:#0b1330; border-radius:12px; padding:10px; display:grid; place-items:center; }
.engine-canvas { max-width:100%; border-radius:8px; }
.engine-blockly-wrap { background:#fff; border-radius:12px; padding:10px; display:flex; flex-direction:column; }
.blockly-toolbar { display:flex; justify-content:flex-end; margin-bottom:6px; }
.block-count { font:12px 'DM Mono'; color:var(--muted); background:#eef0f8; padding:5px 9px; border-radius:6px; }
.block-count.over-limit { background:#ffe5e0; color:#a33d31; font-weight:700; }
.engine-blockly { flex:1; min-height:360px; border-radius:8px; overflow:hidden; border:1px solid var(--line); }
@media (max-width:900px) { .engine-mount { grid-template-columns:1fr; } }

.outcome-page { display:grid; place-items:center; min-height:calc(100vh - 76px); padding:30px; }
.outcome-card { width:min(480px,100%); text-align:center; padding:40px 30px; }
.outcome-card.success { box-shadow:12px 12px 0 var(--lime); }
.outcome-card.failed { box-shadow:12px 12px 0 var(--coral); }
.outcome-emoji { font-size:56px; }
.outcome-stats { display:flex; justify-content:center; gap:30px; margin:18px 0; }
.outcome-stats span { display:block; font:11px 'DM Mono'; color:var(--muted); }
.outcome-stats strong { font-size:26px; }
.outcome-card .cta { margin-top:18px; }

.cert-logo { max-width:110px; margin:0 auto 10px; display:block; }
.generated-card { max-width:480px; margin:0 auto; text-align:center; padding:34px; }
.generated-card .cert-url { font:12px 'DM Mono'; color:var(--muted); word-break:break-all; }
.qr-holder { display:flex; justify-content:center; margin:18px 0; }
.qr-holder svg { width:170px; height:170px; }
.generated-actions { display:flex; flex-direction:column; gap:10px; margin-top:16px; }

.admin-page { padding:40px 0 70px; }
.stat-row { display:grid; grid-template-columns:repeat(3,1fr); gap:14px; margin-bottom:20px; }
.stat { text-align:center; }
.stat span { display:block; font:12px 'DM Mono'; color:var(--muted); }
.stat strong { font-size:30px; }
.admin-grid { display:grid; grid-template-columns:1fr 1fr; gap:16px; }
.admin-table { width:100%; border-collapse:collapse; font-size:13px; }
.admin-table th, .admin-table td { text-align:left; padding:7px 6px; border-bottom:1px solid var(--line); }
.admin-inline-form { display:flex; gap:8px; margin-top:14px; flex-wrap:wrap; }
.admin-inline-form input, .admin-inline-form select { border:1px solid var(--line); border-radius:8px; padding:9px; }
.mission-time-field input { max-width:120px; }
@media (max-width:900px) { .admin-grid { grid-template-columns:1fr; } }