/* Mission UI owns only #course and its controls. Existing play/replay surfaces
   keep their own layout, input rules and storage behavior. */
.course-panel{min-width:0;margin:0 0 20px;color:#edf7ef;overflow-wrap:anywhere}
.course-panel *{box-sizing:border-box}
.course-panel h2,.course-panel h3,.course-panel p{margin-top:0}
.course-panel button,.course-panel summary{font:inherit;touch-action:manipulation}
.course-panel .course-eyebrow{margin:0 0 7px;color:#bbdfa3;font-size:12px;font-weight:750;letter-spacing:.025em}
.course-panel .course-description,.course-panel .course-brief,.course-panel .course-muted{font-size:13px;line-height:1.65;color:#bed0cc}
.course-panel .course-muted{margin:8px 0 0;font-size:12px}
.course-panel .course-intro{padding:clamp(19px,3vw,32px);border:1px solid #597967;border-radius:22px;background:linear-gradient(125deg,#213f3c,#182d36 75%)}
.course-panel .course-intro-title{max-width:850px;margin:0 0 12px;font-size:clamp(24px,3.1vw,36px);line-height:1.35;letter-spacing:-.04em;word-break:keep-all}
.course-panel .course-description{max-width:800px;margin-bottom:19px;font-size:15px}
.course-panel .course-start-steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;margin:0 0 21px;padding:0;list-style:none;counter-reset:course-start}
.course-panel .course-start-steps li{min-width:0;padding:14px;border:1px solid #62837166;border-radius:12px;background:#142b2e80;counter-increment:course-start}
.course-panel .course-start-steps li::before{content:counter(course-start,decimal-leading-zero);display:block;margin-bottom:7px;font-size:12px;color:#bee49f;font-weight:750}
.course-panel .course-start-steps strong{display:block;margin-bottom:5px;font-size:14px;line-height:1.5}
.course-panel .course-start-steps span{display:block;color:#b7ccc6;font-size:12px;line-height:1.6}
.course-panel .course-actions{display:flex;flex-wrap:wrap;gap:9px;margin-top:15px}
.course-panel .course-button{display:inline-flex;align-items:center;justify-content:center;max-width:100%;min-width:0;min-height:44px;padding:10px 15px;border:1px solid #5c777b;border-radius:11px;background:#263e48;color:#e9f3ec;font-size:13px;line-height:1.5;font-weight:700;text-align:center;white-space:normal;overflow-wrap:anywhere;cursor:pointer}
.course-panel .course-button:hover:not(:disabled){background:#35535a}
.course-panel .course-button:disabled{cursor:default;opacity:.58}
.course-panel .course-button:focus-visible,.course-panel .course-hint summary:focus-visible{outline:3px solid #fff0a8;outline-offset:3px}
.course-panel .course-primary{background:#c7ed9e;color:#18382c;border-color:#c7ed9e}
.course-panel .course-primary:hover:not(:disabled){background:#d9f7b7}
.course-panel .course-intro .course-primary{min-height:54px;padding:12px 25px;font-size:17px}
.course-panel .course-progress-wrap{margin:0 0 15px}
.course-panel .course-progress-heading{display:flex;align-items:center;justify-content:space-between;gap:10px;margin:0 2px 8px}
.course-panel .course-progress-heading .course-eyebrow{margin:0}
.course-panel .course-progress-heading>strong{font-size:13px;color:#d9edc9}
.course-panel .course-progress{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:8px;margin:0;padding:0;list-style:none}
.course-panel .course-progress>li{min-width:0}
.course-panel .course-mission-pick{display:grid;grid-template-columns:25px minmax(0,1fr);grid-template-rows:auto auto;column-gap:7px;row-gap:2px;width:100%;height:100%;min-height:82px;padding:11px;text-align:left;background:#192f38}
.course-panel .course-number{grid-row:1/3;display:grid;place-items:center;align-self:start;width:25px;height:25px;border:1px solid #637a7c;border-radius:8px;font-size:12px}
.course-panel .course-pick-title{font-size:12px;line-height:1.45;word-break:keep-all}
.course-panel .course-pick-state{font-size:10px;font-weight:500;line-height:1.4;color:#aec2be}
.course-panel .course-mission-pick[data-state=complete]{border-color:#648a65;background:#203e35}
.course-panel .course-mission-pick[data-state=complete] .course-pick-state{color:#d0ebad}
.course-panel .course-mission-pick[aria-current=step]{border-color:#c4e99c;box-shadow:inset 0 0 0 1px #c4e99c}
.course-panel .course-mission-pick[data-state=current] .course-number{border-color:#c4e99c;background:#c4e99c;color:#1b382a}
.course-panel .course-mission-pick[data-state=locked]{background:#142730;border-color:#3d535b}
.course-panel .course-mission-layout{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);gap:15px;align-items:start}
.course-panel .course-mission,.course-panel .course-verdict{min-width:0;padding:20px;border:1px solid #48636c;border-radius:18px;background:#1a313a}
.course-panel .course-title{margin:0 0 9px;font-size:25px;line-height:1.35;letter-spacing:-.035em;word-break:keep-all}
.course-panel .course-brief{margin:0 0 11px}
.course-panel .course-goal{margin:0 0 15px;padding:12px 14px;border-left:3px solid #c5e99d;border-radius:5px;background:#29493f;color:#edf8db;font-size:15px;line-height:1.65;font-weight:650}
.course-panel .course-label{margin:15px 0 7px;font-size:12px;color:#c8dcd0;line-height:1.5}
.course-panel .course-criteria{display:grid;gap:5px;margin:0;padding-left:20px;font-size:13px;line-height:1.6;color:#d8e9df}
.course-panel .course-rules{display:flex;flex-wrap:wrap;gap:5px}
.course-panel .course-rules span{min-width:0;padding:5px 8px;border:1px solid #617a7866;border-radius:7px;background:#13282f;color:#c6ddd0;font-size:11px;line-height:1.5}
.course-panel .course-hint{margin-top:13px;border-top:1px solid #58716e66}
.course-panel .course-hint summary{min-height:44px;padding:11px 0;font-size:12px;color:#e4deb2;cursor:pointer}
.course-panel .course-hint p{margin:0 0 3px;color:#c9d5c6;font-size:12px;line-height:1.7}
.course-panel .course-verdict{border-color:#47616a;background:#152c35}
.course-panel .course-verdict[data-state=won]{border-color:#96bb78;background:#1c3d33}
.course-panel .course-verdict[data-state=retry],.course-panel .course-verdict[data-state=draft]{border-color:#ab9864}
.course-panel .course-verdict-title{margin:0 0 10px;font-size:20px;line-height:1.4;word-break:keep-all;scroll-margin:15px}
.course-panel .course-verdict-title:focus-visible{outline:3px solid #fff0a8;outline-offset:5px;border-radius:3px}
.course-panel .course-verdict-note,.course-panel .course-pending{margin:0 0 10px;font-size:12px;line-height:1.7;color:#c1d2c9}
.course-panel .course-pending{color:#f3dc9c}
.course-panel .course-record-label{margin:0 0 5px;color:#abc6b8;font-size:11px;line-height:1.5}
.course-panel .course-last-line{margin:0 0 12px;padding:9px 11px;border-radius:8px;background:#10242b;font-size:12px;line-height:1.7;color:#d9e9df;white-space:pre-wrap}
.course-panel .course-checks{display:grid;gap:7px;margin:0 0 12px;padding:0;list-style:none}
.course-panel .course-checks li{display:grid;grid-template-columns:18px minmax(0,1fr);gap:2px 5px;font-size:12px;line-height:1.5}
.course-panel .course-check-mark{grid-row:1/3;color:#e3c68c;font-weight:800}
.course-panel .course-checks li[data-passed=true] .course-check-mark{color:#c7ec9d}
.course-panel .course-checks strong{font-size:12px;font-weight:650}
.course-panel .course-check-actual{grid-column:2;color:#b6cfc5;font-size:11px}
.course-panel .course-verdict .course-actions{display:grid;grid-template-columns:minmax(0,1fr)}
.course-panel .course-bottom-tools{display:flex;justify-content:flex-end;margin-top:9px}
.course-panel .course-bottom-tools .course-button{padding:8px 12px;font-size:12px;background:transparent}
.course-panel .course-complete{margin:0 0 14px;padding:17px 20px;border:1px solid #c8df93;border-radius:15px;background:#2c4833}
.course-panel .course-complete h2{margin:0 0 6px;color:#e7f4bc;font-size:23px;line-height:1.4}
.course-panel .course-complete p{margin:0;color:#d1e3c3;font-size:13px;line-height:1.65}
.course-panel .course-practice{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:16px 20px;border:1px solid #597472;border-radius:16px;background:#1b353b}
.course-panel .course-practice h2{margin:0;font-size:19px;line-height:1.45;word-break:keep-all}
.course-panel .course-practice .course-button{flex:none}
.course-panel .course-save-error{margin:12px 0 0;padding:11px 14px;border:1px solid #bf9b61;border-radius:10px;background:#3b3327;color:#ffe2a9;font-size:12px;line-height:1.7}
.studio[data-mode='course'] .scenes,.studio[data-mode='course'] #optional-challenge{display:none!important}
/* Keep a measurable canvas while the introduction is visible. A zero-size
   WebGL camera would otherwise retain invalid coordinates after starting. */
.workspace.course-before-start{position:absolute;left:12px;right:12px;top:0;max-width:1400px;margin:auto;visibility:hidden;pointer-events:none;z-index:-1}
.studio[data-mode='course'] .scene-head>.experiment-goal-context{display:none!important}
.course-analysis{margin-top:18px;border-top:1px solid #3b535f}
.course-analysis>summary{padding-left:0}
@media(max-width:900px){
 .course-panel .course-progress{gap:6px}
 .course-panel .course-mission-pick{grid-template-columns:minmax(0,1fr);justify-items:start;gap:4px;padding:9px;min-height:100px}
 .course-panel .course-number{grid-row:auto}
 .course-panel .course-mission-layout{gap:11px}
 .course-panel .course-mission,.course-panel .course-verdict{padding:16px}
 .course-panel .course-title{font-size:23px}
 .course-panel .course-start-steps{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media(max-width:600px){
 .course-panel{margin-bottom:14px}
 .course-panel .course-progress{grid-template-columns:repeat(3,minmax(0,1fr))}
 .course-panel .course-mission-pick{grid-template-columns:23px minmax(0,1fr);align-content:start;column-gap:6px;row-gap:2px;min-height:79px;padding:9px}
 .course-panel .course-number{grid-row:1/3;width:23px;height:23px}
 .course-panel .course-pick-title{font-size:11px}
 .course-panel .course-mission-layout{grid-template-columns:minmax(0,1fr)}
 .course-panel .course-mission,.course-panel .course-verdict{padding:15px;border-radius:15px}
 .course-panel .course-title{font-size:23px}
 .course-panel .course-goal{font-size:14px;padding:10px 11px}
 .course-panel .course-label{margin-top:12px}
 .course-panel .course-verdict-title{font-size:18px}
 .course-panel .course-intro{padding:19px 16px;border-radius:18px}
 .course-panel .course-intro-title{font-size:26px}
 .course-panel .course-description{font-size:13px}
 .course-panel .course-start-steps{gap:7px;margin-bottom:16px}
 .course-panel .course-start-steps li{padding:10px}
 .course-panel .course-start-steps strong{font-size:13px}
 .course-panel .course-start-steps span{font-size:11px}
 .course-panel .course-intro .course-actions{display:grid;grid-template-columns:minmax(0,1fr)}
 .course-panel .course-practice{display:grid;gap:12px;padding:15px}
 .course-panel .course-practice h2{font-size:17px}
 .course-panel .course-practice .course-button{width:100%}
 .course-panel .course-complete{padding:14px 15px}
 .course-panel .course-complete h2{font-size:21px}
}
@media(max-height:520px) and (min-width:601px){
 .course-panel .course-intro{padding:18px 20px}
 .course-panel .course-intro-title{font-size:27px}
 .course-panel .course-description{margin-bottom:12px;font-size:13px}
 .course-panel .course-start-steps{grid-template-columns:repeat(4,minmax(0,1fr));gap:7px;margin-bottom:13px}
 .course-panel .course-start-steps li{padding:9px}
 .course-panel .course-start-steps li::before{margin-bottom:3px}
 .course-panel .course-mission-pick{min-height:81px}
}