/* ====== ธีมอวกาศ — กระจกเรืองแสง ====== */
:root{
  --bg:#070b18; --panel:rgba(16,24,46,.78); --panel2:rgba(28,40,72,.6);
  --line:rgba(120,170,255,.18); --accent:#4fffd0; --accent2:#ffd166;
  --hot:#ff3b6b; --good:#6fff8f; --text:#e8eeff; --dim:#8da3c8;
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{
  font-family:"Segoe UI","Sarabun",system-ui,sans-serif;
  background:radial-gradient(circle at 70% 10%,#15224a 0%,var(--bg) 60%);
  color:var(--text);overflow:hidden;
}
#viewport{position:fixed;inset:0;z-index:0}
.panel{
  position:fixed;z-index:5;background:var(--panel);backdrop-filter:blur(12px);
  border:1px solid var(--line);border-radius:16px;padding:16px;
  box-shadow:0 10px 40px rgba(0,0,0,.4);
}
h1{font-size:17px;letter-spacing:.3px}
h1 small{display:block;font-size:11px;color:var(--dim);font-weight:400;margin-top:2px}
.section-title{font-size:12px;color:var(--accent);text-transform:uppercase;letter-spacing:1px;margin:14px 0 8px}

/* ---- แผงซ้าย: ออกแบบวงโคจร ---- */
#left{left:16px;top:16px;width:330px;max-height:calc(100vh - 32px);overflow-y:auto}
.slider-row{margin-bottom:12px}
.slider-head{display:flex;justify-content:space-between;font-size:12px;margin-bottom:4px}
.slider-head .val{color:var(--accent2);font-weight:600}
input[type=range]{width:100%;-webkit-appearance:none;height:5px;border-radius:5px;
  background:linear-gradient(90deg,#3a4f86,#5f7fd6);outline:none}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:16px;height:16px;border-radius:50%;
  background:var(--accent);cursor:pointer;box-shadow:0 0 10px var(--accent)}
#presets{display:flex;gap:6px;flex-wrap:wrap}
.preset-btn{flex:1;min-width:56px;padding:7px 4px;font-size:12px;border:1px solid var(--line);
  background:var(--panel2);color:var(--text);border-radius:9px;cursor:pointer;transition:.15s}
.preset-btn:hover{background:#2c3f72;border-color:var(--accent)}
#orbit-info{font-size:11.5px;color:var(--dim);margin-top:10px;line-height:1.7;
  background:var(--panel2);padding:8px 10px;border-radius:9px}
#orbit-info b{color:var(--text)}

/* ---- แผงขวา: เป้าหมาย + คะแนน ---- */
#right{right:16px;top:132px;width:320px;max-height:calc(100vh - 148px);overflow-y:auto}
.challenge-btn{display:block;width:100%;text-align:left;margin-bottom:6px;padding:8px 10px;
  border:1px solid var(--line);background:var(--panel2);color:var(--text);border-radius:9px;cursor:pointer}
.challenge-btn small{display:block;color:var(--dim);font-size:10.5px;margin-top:2px;font-weight:400}
.challenge-btn.active{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent) inset;background:#1d3358}
.score-box{text-align:center;background:linear-gradient(180deg,#1d3a5e,#142540);
  border-radius:12px;padding:12px;margin:6px 0 12px}
#score-name{font-size:12px;color:var(--accent2)}
#score-big{font-size:40px;font-weight:800;color:var(--accent);line-height:1.1;text-shadow:0 0 18px rgba(79,255,208,.5)}
#score-unit{font-size:12px;color:var(--dim)}
.metric{display:flex;flex-direction:column;border-bottom:1px solid var(--line);padding:7px 0}
.m-label{font-size:11px;color:var(--dim)}
.m-big{font-size:15px;font-weight:700}
.m-sub{font-size:10.5px;color:var(--dim)}
#cost-info{font-size:12px;margin-top:6px}
.cost-row{display:flex;justify-content:space-between;padding:3px 0}
.cost-bar{height:7px;background:#22335c;border-radius:5px;overflow:hidden;margin:4px 0}
.cost-bar>div{height:100%;background:linear-gradient(90deg,#6fff8f,#ffd166,#ff3b6b)}
.cost-sub{font-size:10px;color:var(--dim);margin-bottom:6px}

/* ---- HUD บน ---- */
/* จองพื้นที่ซ้าย (#left panel) และขวา (โลโก้+ปุ่มภาษา) ไว้ไม่ให้ชนกัน แล้วจัดกลางเฉพาะพื้นที่ที่เหลือ */
#hud{left:350px;right:190px;top:16px;display:flex;justify-content:center;gap:14px;padding:10px 16px;
  align-items:center;flex-wrap:wrap;max-width:none}
.hud-item{text-align:center;min-width:62px}
.hud-item .k{font-size:10px;color:var(--dim)}
.hud-item .v{font-size:14px;font-weight:700;color:var(--accent)}
.cover-badge{padding:6px 12px;border-radius:20px;font-size:12px;font-weight:700;border:1px solid var(--line)}
.cover-badge.on{background:rgba(111,255,143,.15);color:var(--good);border-color:var(--good)}
.cover-badge.off{background:rgba(140,163,200,.1);color:var(--dim)}

/* ---- แถบเวลา ล่าง ---- */
#time{left:50%;bottom:16px;transform:translateX(-50%);display:flex;gap:14px;align-items:center;padding:10px 18px}
#time button{padding:8px 14px;border:1px solid var(--line);background:var(--panel2);color:var(--text);
  border-radius:9px;cursor:pointer;font-size:13px;font-weight:600}
#time button:hover{border-color:var(--accent)}
#hud-time{font-size:15px;font-weight:700;color:var(--accent2);min-width:140px;text-align:center}
.speed-wrap{display:flex;flex-direction:column;align-items:center;font-size:11px;color:var(--dim)}
.speed-wrap input{width:120px}
.legend{position:fixed;left:16px;bottom:16px;z-index:5;font-size:11px;color:var(--dim);
  background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:8px 10px}
.legend span{display:inline-flex;align-items:center;gap:5px;margin-right:10px}
.dot{width:9px;height:9px;border-radius:50%;display:inline-block}
.note{font-size:10px;color:var(--dim);margin-top:8px;line-height:1.5}
::-webkit-scrollbar{width:7px}::-webkit-scrollbar-thumb{background:#2c3f72;border-radius:5px}

/* ---- บันทึกส่งอาจารย์ ---- */
.save-box{background:var(--panel2);border-radius:10px;padding:10px 12px;display:flex;flex-direction:column;gap:7px}
.save-box input{background:#122040;color:var(--text);border:1px solid var(--line);
  border-radius:7px;padding:7px 9px;font-size:12px;font-family:inherit}
.save-main-btn{padding:9px 12px;background:linear-gradient(135deg,#1d5c4a,#1d3358);
  color:var(--good);border:1px solid var(--good);border-radius:8px;cursor:pointer;
  font-size:13px;font-weight:700}
.save-main-btn:hover{background:#1d6c54}
.save-status{font-size:11px;color:var(--dim);line-height:1.6;min-height:14px;word-break:break-all}
.save-status.err{color:var(--hot)}
.save-status.ok{color:var(--good)}
.save-status-link{display:inline-block;margin-top:4px;color:var(--accent);text-decoration:none;font-size:12px;font-weight:600}
.save-status-link:hover{text-decoration:underline}
.verify-link{display:block;text-align:center;margin-top:8px;font-size:11px;
  color:var(--dim);text-decoration:none;padding:6px;border-radius:7px}
.verify-link:hover{color:var(--accent);background:var(--panel2)}

/* ---- Logout button ---- */
.logout-btn{
  margin-left:auto;padding:5px 10px;font-size:11px;border-radius:7px;cursor:pointer;
  background:rgba(255,60,80,.15);border:1px solid rgba(255,60,80,.4);color:#ff6b7a;
  white-space:nowrap;transition:.15s;
}
.logout-btn:hover{background:rgba(255,60,80,.3)}

/* ---- ตารางผู้ชนะ (Leaderboard) ---- */
.lb-overlay{
  position:fixed;inset:0;z-index:900;display:flex;align-items:center;justify-content:center;
  background:rgba(5,12,26,.82);backdrop-filter:blur(6px);padding:20px;
}
.lb-overlay.hidden{display:none}
.lb-panel{
  width:min(860px,100%);max-height:80vh;display:flex;flex-direction:column;
  background:var(--panel);border:1px solid var(--line);border-radius:18px;
  box-shadow:0 12px 50px rgba(0,0,0,.7);overflow:hidden;
}
.lb-header{
  display:flex;align-items:center;justify-content:space-between;
  padding:16px 20px;border-bottom:1px solid var(--line);flex-shrink:0;
}
.lb-header h2{font-size:16px;color:var(--accent)}
.lb-header-actions{display:flex;gap:8px;align-items:center}
.lb-my-row{background:rgba(79,255,208,.06) !important}
.lb-my-row .lb-name{color:var(--accent)}
.lb-close-btn{padding:4px 10px;font-size:16px;border-radius:7px;cursor:pointer;
  background:none;border:none;color:var(--dim)}
.lb-close-btn:hover{color:var(--text);background:var(--panel2)}
.lb-filters{display:flex;flex-wrap:wrap;gap:6px;padding:10px 20px;border-bottom:1px solid var(--line);flex-shrink:0}
.lb-filter-btn{padding:4px 12px;border-radius:20px;border:1px solid var(--line);background:none;color:var(--dim);font-size:12px;cursor:pointer;white-space:nowrap}
.lb-filter-btn:hover{color:var(--text);border-color:var(--accent)}
.lb-filter-active{background:rgba(79,255,208,.15);color:var(--accent) !important;border-color:var(--accent) !important}
.lb-table-wrap{overflow-y:auto;flex:1}
.lb-table{width:100%;border-collapse:collapse;font-size:13px}
.lb-table thead th{
  position:sticky;top:0;background:rgba(16,24,46,.95);
  padding:10px 14px;text-align:left;font-size:11px;color:var(--dim);
  text-transform:uppercase;letter-spacing:.8px;border-bottom:1px solid var(--line);
}
.lb-table tbody tr{border-bottom:1px solid rgba(120,170,255,.08);transition:.12s}
.lb-table tbody tr:hover{background:var(--panel2)}
.lb-table td{padding:10px 14px;vertical-align:middle}
.lb-rank{font-size:18px;text-align:center;width:40px}
.lb-name{font-weight:600}
.lb-email{font-size:11px;color:var(--dim);font-weight:400}
.lb-score{color:var(--accent);font-weight:700;font-size:15px}
.lb-challenge{color:var(--dim);font-size:12px}
.lb-orbit{color:var(--accent2);font-size:12px}
.lb-date{color:var(--dim);font-size:11px}
.lb-note{padding:10px 20px;font-size:11px;color:var(--dim);border-top:1px solid var(--line);flex-shrink:0}

/* ---- Score Popup ---- */
.score-popup{position:fixed;inset:0;z-index:8000;display:flex;align-items:center;justify-content:center;
  background:rgba(5,12,26,.75);backdrop-filter:blur(4px)}
.score-popup.hidden{display:none}
.score-popup-box{background:#0d1f38;border:2px solid var(--accent);border-radius:20px;
  padding:36px 40px;text-align:center;max-width:340px;width:90%;
  box-shadow:0 0 40px rgba(0,198,255,.25);animation:popIn .25s ease}
@keyframes popIn{from{transform:scale(.8);opacity:0}to{transform:scale(1);opacity:1}}
.score-popup-icon{font-size:48px;margin-bottom:8px}
.score-popup-msg{font-size:15px;color:var(--dim);margin-bottom:4px}
.score-popup-score{font-size:32px;font-weight:800;color:var(--accent);margin:6px 0 10px}
.score-popup-sub{font-size:13px;color:#aac4d8;margin-bottom:24px;line-height:1.6}
.score-popup-close{background:var(--accent);color:#000;border:none;border-radius:10px;
  padding:10px 32px;font-size:15px;font-weight:700;cursor:pointer}
.score-popup-close:hover{opacity:.85}

/* ---- DevTools guard ---- */
body.devtools-open>*:not(#devtools-warn){filter:blur(12px);pointer-events:none;user-select:none}
#devtools-warn{
  display:none;position:fixed;inset:0;z-index:9999;
  background:rgba(5,12,26,.92);align-items:center;justify-content:center;flex-direction:column;
  gap:16px;text-align:center;padding:32px;
}
body.devtools-open #devtools-warn{display:flex}
#devtools-warn h2{font-size:22px;color:#ff3b6b}
#devtools-warn p{font-size:14px;color:var(--dim);max-width:340px;line-height:1.8}

/* ---- Login overlay (Google OAuth) ---- */
.login-overlay{
  position:fixed;inset:0;z-index:998;display:flex;align-items:center;justify-content:center;
  background:radial-gradient(circle at 50% 20%,#0d1b3e 0%,#050c1a 70%);padding:24px;
}
.login-card{
  max-width:360px;width:100%;text-align:center;background:var(--panel);
  border:1px solid var(--line);border-radius:20px;padding:36px 28px;
  box-shadow:0 8px 40px rgba(0,0,0,.7);
}
.login-logo{height:64px;width:auto;margin-bottom:18px}
.login-card h2{font-size:18px;margin-bottom:6px;color:var(--accent)}
.login-card p{font-size:13px;color:var(--dim);line-height:1.7;margin-bottom:24px}
#google-signin-btn{display:flex;justify-content:center;margin-bottom:14px}
#login-error{
  display:none;margin-top:12px;padding:10px 14px;border-radius:9px;
  background:rgba(255,60,80,.12);border:1px solid rgba(255,60,80,.4);
  color:#ff6b7a;font-size:13px;line-height:1.6;white-space:pre-line;text-align:left;
}
/* ---- user badge ในแผงบันทึก ---- */
.user-badge{
  display:none;align-items:center;gap:10px;
  background:var(--panel2);border:1px solid var(--line);border-radius:10px;
  padding:8px 12px;margin-bottom:8px;
}
.user-avatar{width:32px;height:32px;border-radius:50%;flex-shrink:0}
.user-avatar-placeholder{font-size:24px;line-height:1}
.user-badge-name{font-size:13px;font-weight:600;color:var(--text)}
.user-badge-email{font-size:11px;color:var(--dim)}
/* ---- input ที่ล็อกจาก OAuth ---- */
#save-student-id[readonly],#save-student-name[readonly]{
  opacity:.7;cursor:default;border-color:var(--line);
}

/* ---- หน้าจอแจ้งเตือนมือถือ/แท็บเล็ต ---- */
.mobile-block-overlay{
  position:fixed;inset:0;z-index:999;align-items:center;justify-content:center;
  background:radial-gradient(circle at 50% 20%,#15224a 0%,var(--bg) 70%);padding:24px;
}
.mobile-block-card{
  max-width:380px;text-align:center;background:var(--panel);border:1px solid var(--line);
  border-radius:18px;padding:32px 26px;backdrop-filter:blur(12px);
}
.mobile-block-icon{font-size:48px;margin-bottom:14px}
.mobile-block-card h2{font-size:18px;margin-bottom:10px;color:var(--accent)}
.mobile-block-card p{font-size:13px;color:var(--dim);line-height:1.7}
.mobile-block-card hr{border:none;border-top:1px solid var(--line);margin:20px 0}

/* ---- โลโก้ STEM Lab ---- */
.stemlab-logo{position:fixed;top:14px;right:16px;z-index:6;
  height:60px;width:auto;pointer-events:none;filter:drop-shadow(0 2px 10px rgba(0,0,0,.6))}

/* ---- ปุ่มสลับภาษา (อยู่ใต้โลโก้) ---- */
.lang-toggle{position:fixed;top:82px;right:16px;z-index:6;padding:8px 14px;
  background:var(--panel);border:1px solid var(--line);color:var(--accent);
  border-radius:9px;cursor:pointer;font-size:12px;font-weight:700;backdrop-filter:blur(12px)}
.lang-toggle:hover{border-color:var(--accent)}

/* ---- เลือกเป้าหมาย ---- */
.target-box{background:var(--panel2);border-radius:10px;padding:10px 12px;margin-bottom:8px}
.target-custom{display:flex;gap:6px;margin-top:6px}
.target-custom.hidden{display:none}
.target-custom input[type=number]{flex:1;min-width:0;background:#122040;color:var(--text);
  border:1px solid var(--line);border-radius:7px;padding:6px 7px;font-size:11.5px;font-family:inherit}
.target-current{font-size:11px;color:var(--accent2);margin-top:6px}

/* ---- TLE Loader ---- */
.tle-box{background:var(--panel2);border-radius:10px;padding:10px 12px;margin-bottom:8px}
/* select อยู่แถวของตัวเอง เต็มความกว้าง — กันไม่ให้ปุ่มโหลดถูกบีบจนหาย */
.tle-select-full{width:100%;background:#122040;color:var(--text);border:1px solid var(--line);
  border-radius:7px;padding:6px 7px;font-size:11.5px;font-family:inherit;margin-bottom:6px}
.tle-row{display:flex;gap:6px;align-items:stretch;margin-bottom:6px}
.tle-row:last-child{margin-bottom:0}
.tle-btn{flex:0 0 auto;padding:6px 14px;background:var(--panel2);color:var(--accent);
  border:1px solid var(--accent);border-radius:7px;cursor:pointer;font-size:12px;
  font-weight:600;white-space:nowrap}
.tle-btn:hover{background:#1d3358}
.tle-filelabel{flex:1;min-width:0;padding:6px 8px;background:var(--panel2);color:var(--dim);
  border:1px solid var(--line);border-radius:7px;cursor:pointer;font-size:11px;text-align:center;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.tle-filelabel:hover{border-color:var(--accent);color:var(--text)}
.tle-sat-list{display:flex;flex-direction:column;gap:4px;margin-top:4px}
.tle-sat-list.hidden{display:none}
.tle-sat-btn{text-align:left;padding:6px 9px;background:#0e1c34;color:var(--text);
  border:1px solid var(--line);border-radius:7px;cursor:pointer;font-size:11.5px;font-family:inherit}
.tle-sat-btn:hover{border-color:var(--accent2);background:#1a2f52}
.tle-sat-btn.active{border-color:var(--accent);background:#183050}
.tle-sat-name{font-weight:700;display:block}
.tle-sat-info{font-size:10px;color:var(--dim);margin-top:1px}
.tle-status{font-size:11px;color:var(--dim);min-height:14px}
.tle-status.err{color:var(--hot)}

/* ---- อายุวงโคจร ---- */
.lifetime-box{background:var(--panel2);border-radius:10px;padding:10px 12px;font-size:12px;margin-bottom:8px}
.lt-row{display:flex;justify-content:space-between;margin-bottom:6px}
.lt-row b{color:var(--accent2);font-size:14px}
#lt-bar-wrap{height:7px;background:#1a2844;border-radius:5px;overflow:hidden;margin-bottom:6px}
#lt-bar{height:100%;width:0%;background:linear-gradient(90deg,var(--hot),var(--accent2),var(--good));transition:width .5s}
.lt-decay{color:var(--dim);font-size:11px;margin-bottom:4px}
.lt-decay b{color:var(--text)}
.lt-note{font-size:11px;color:var(--accent2);line-height:1.5;min-height:14px}
.slider-row.mini{margin-bottom:8px}
.slider-row.mini .slider-head{font-size:11px}
.lt-source{font-size:10.5px;color:var(--dim);margin:-2px 0 8px;font-style:italic}

/* ---- แถบเวลา / ปุ่มแผนที่ ---- */
.btn-gt{padding:8px 12px;border:1px solid var(--line);background:var(--panel2);color:var(--text);
  border-radius:9px;cursor:pointer;font-size:13px;font-weight:600;white-space:nowrap}
.btn-gt:hover,.btn-gt.active{border-color:var(--accent);background:#1d3358}

/* ---- Ground Track Panel ---- */
.gt-panel{left:50%;bottom:70px;transform:translateX(-50%);width:min(860px,calc(100vw - 32px));
  padding:12px 14px 10px;display:flex;flex-direction:column;gap:8px;
  transition:opacity .2s,transform .2s}
.gt-panel.hidden{opacity:0;pointer-events:none;transform:translateX(-50%) translateY(20px)}
.gt-header{display:flex;justify-content:space-between;align-items:center}
.gt-close{background:none;border:none;color:var(--dim);font-size:16px;cursor:pointer;padding:2px 6px;
  border-radius:6px}
.gt-close:hover{color:var(--text);background:var(--panel2)}
#gt-canvas-wrap{position:relative;width:100%;height:200px;border-radius:8px;overflow:hidden;
  border:1px solid var(--line)}
#gt-canvas{width:100%;height:100%;display:block}
.gt-legend{display:flex;gap:16px;font-size:11px;color:var(--dim);flex-wrap:wrap}

/* ---- Skymap Panel ---- */
.sky-panel{
  right:16px;bottom:70px;width:340px;
  padding:12px 14px 10px;display:flex;flex-direction:column;gap:8px;
  transition:opacity .2s,transform .2s;
}
.sky-panel.hidden{opacity:0;pointer-events:none;transform:translateY(20px)}
#sky-canvas-wrap{
  position:relative;width:100%;height:300px;
  border-radius:8px;overflow:hidden;border:1px solid var(--line);
}
#sky-canvas{width:100%;height:100%;display:block}