:root {
    --ds-primary: #f26b52;
    --ds-secondary: #0a4f57;
    --ds-premium-green: #25D366;
    --ds-bg: #fdfbf7;
    --ds-card-bg: #ffffff;
    --ds-border: #efece6;
    --ds-radius: 12px;
}

.ds-wrapper {
    font-family: 'Inter', sans-serif;
    display: flex;
    justify-content: center;
    padding: 60px 20px 20px 20px;
    background-color: transparent;
    position: relative;
    max-width: 600px;
    margin: 0 auto;
}

/* Fix for cutoff content in fullscreen mode */
.ds-wrapper:-webkit-full-screen {
    overflow-y: auto !important;
    max-height: 100vh !important;
    background-color: var(--ds-bg);
}
.ds-wrapper:fullscreen {
    overflow-y: auto !important;
    max-height: 100vh !important;
    background-color: var(--ds-bg);
}

/* SOUND & FULLSCREEN CONTROLS */
.ds-sound-text,
.ds-fullscreen-btn,
.ds-exit-fullscreen-btn {
    position: absolute;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    z-index: 20;
    user-select: none;
}
.ds-sound-text {
    left: 20px;
    color: #333;
}
.ds-sound-text:hover {
    color: #0a4f57;
}
.ds-fullscreen-btn {
    right: 20px;
    background: #163C1C;
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}
.ds-fullscreen-btn:hover {
    background: #0f2b0f;
    transform: translateY(-1px);
}
.ds-exit-fullscreen-btn {
    top: 20px;
    right: 20px;
    background: rgba(0,0,0,0.7);
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 6px;
    display: none;
    z-index: 100;
}
.ds-exit-fullscreen-btn:hover {
    background: rgba(0,0,0,0.9);
}

/* LEVEL PICKER */
.ds-level-picker-container { 
    position: absolute; 
    top: 0; 
    left: 0; 
    z-index: 10; 
}
.ds-level-picker-container select {
    background: white;
    border: 1px solid #ddd;
    padding: 8px 16px;
    border-radius: 20px;
    font-weight: 600;
    color: var(--ds-secondary);
    outline: none;
}

/* Fix: make sure level picker is clickable above other controls */
.ds-level-picker-container {
    z-index: 9999 !important;
    pointer-events: auto !important;
}

.ds-level-picker-container select {
    position: relative;
    z-index: 9999;
    pointer-events: auto;
}

/* CARD */
.ds-card {
    background: var(--ds-card-bg); 
    width: 100%; 
    border-radius: var(--ds-radius);
    box-shadow: 0 4px 24px rgba(0,0,0,0.06); 
    padding: 40px;
    position: relative; 
    border: 1px solid var(--ds-border);
}
.ds-card.center-content { 
    text-align: center; 
    display: flex; 
    flex-direction: column; 
    align-items: center; 
    gap: 20px; 
}

/* TYPOGRAPHY */
.ds-wrapper h2, .ds-wrapper h3, .ds-wrapper h4 { 
    font-family: 'Merriweather', serif; 
    color: var(--ds-secondary); 
    margin: 0 0 10px 0; 
    text-transform: none !important;
}

/* HEADER */
.ds-header { 
    display: flex; 
    justify-content: space-between; 
    margin-bottom: 25px; 
    color: #999; 
    font-weight: 600; 
    font-size: 13px; 
    text-transform: none !important;
}
.ds-progress span { 
    color: var(--ds-primary); 
}

/* SIGN IMAGE — Level 1 & 2 */
.ds-sign-image {
    width: 100%;
    height: 300px;
    background: #f8f8f8;
    border-radius: 8px;
    overflow: hidden;
    margin-bottom: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid #eee;
    transition: opacity 0.2s;
}
.ds-sign-image img {
    max-width: 95%;
    max-height: 95%;
    object-fit: contain;
    aspect-ratio: 1 / 1;
}

/* ✅ LEVEL 3: SIDE-BY-SIDE PAIR */
.ds-level3-pair {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 30px;
}
.ds-level3-sign {
    background: #f8f8f8;
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid #eee;
    aspect-ratio: 1 / 1;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative; /* Needed for overlay absolute positioning */
}
.ds-level3-sign img {
    max-width: 90%;
    max-height: 90%;
    object-fit: contain;
    aspect-ratio: 1 / 1;
}

/* LEVEL 3 NAME OVERLAY */
.ds-level3-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(10, 79, 87, 0.9); /* Secondary color with opacity */
    color: white;
    padding: 10px 5px;
    text-align: center;
    font-weight: 600;
    font-size: 0.9em;
    display: none;
    z-index: 10;
    line-height: 1.2;
    text-transform: none !important;
}

/* BUTTONS */
.ds-btn { 
    border: none; 
    padding: 16px 32px; 
    border-radius: 100px; 
    font-weight: 600; 
    cursor: pointer; 
    transition: all 0.2s ease; 
    text-decoration: none; 
    display: inline-block; 
    text-align: center; 
}
.ds-btn-primary { 
    background-color: #163C1C; 
    color: white; 
}
.ds-btn-secondary { 
    background-color: var(--ds-secondary); 
    color: white; 
}
.ds-btn-premium { 
    background-color: #163C1C; 
    color: white; 
    width: 100%; 
    font-size: 1.1em; 
}
.ds-btn-premium:hover { 
    background-color: #0f2b0f; 
    transform: translateY(-1px); 
}
.ds-btn-primary:hover { 
    background-color: #0f2b0f; 
    transform: translateY(-1px); 
}

/* OPTIONS GRID */
.ds-grid-options { 
    display: grid; 
    grid-template-columns: 1fr 1fr; 
    gap: 15px; 
}
.ds-option-btn {
    background: white; 
    border: 1px solid #ddd; 
    padding: 20px; 
    border-radius: 12px;
    font-size: 1rem; 
    color: var(--ds-text); 
    cursor: pointer; 
    transition: all 0.2s;
    text-align: center; 
    font-weight: 500; 
    position: relative;
    -webkit-tap-highlight-color: transparent;
    text-transform: none !important;
}
.ds-option-btn:focus {
    outline: none;
    border-color: var(--ds-primary);
}
.ds-option-btn:hover { 
    border-color: var(--ds-primary); 
    transform: translateY(-2px); 
}
.ds-option-btn.correct { 
    background-color: var(--ds-premium-green); 
    border-color: var(--ds-premium-green); 
    color: white; 
}
.ds-option-btn.correct::after { 
    content: " ✔"; 
    font-weight: bold; 
}
.ds-option-btn.wrong { 
    background-color: #ffcccc; 
    border-color: red; 
    color: #333; 
    opacity: 0.8; 
}
.ds-option-btn.wrong::after { 
    content: " ✖"; 
    font-weight: bold; 
    color: red; 
}

/* FEEDBACK & REVEAL */
.ds-feedback, 
.ds-reveal-content,
.ds-level3-reveal-content {
    margin-top: 25px; 
    padding: 20px; 
    background: #fdfbf7; 
    border-radius: 8px; 
    border: 1px solid #efece6; 
    text-align: left; 
}
.ds-hint-text { 
    text-align: center; 
    color: #999; 
    font-size: 0.85em; 
    margin-bottom: 15px; 
    font-style: italic; 
}

.ds-feedback-overlay-content {
    background: #fdfbf7;
    border: 1px solid #efece6;
    border-radius: 8px;
    padding: 20px;
    box-sizing: border-box;
    text-align: center;
}
.ds-feedback-overlay-content h4 {
    margin: 0 0 12px 0;
    color: var(--ds-secondary);
    font-size: 1.2em;
    text-transform: none !important;
}
.ds-feedback-overlay-content div {
    margin: 12px 0;
    line-height: 1.5;
}
.ds-feedback-overlay-content .ds-btn {
    margin-top: 15px;
}

/* LEVEL NAMES */
.ds-level2-name {
    background: var(--ds-secondary); 
    color: white; 
    padding: 8px 16px;
    border-radius: 20px; 
    font-weight: 600; 
    display: inline-block;
    font-size: 1.1em;
    margin: 8px 0;
}

.ds-level3-desc {
    font-size: 0.95em;
    line-height: 1.5;
    color: #555;
    text-transform: none !important;
}

#ds-reveal-title, .ds-pair-title {
    text-transform: none !important;
}

/* SUMMARY */
.ds-message {
    font-size: 1.2em;
    color: var(--ds-secondary);
    margin: 15px 0;
    font-weight: bold;
}
.ds-spinner { 
    border: 4px solid #f3f3f3; 
    border-top: 4px solid var(--ds-primary); 
    border-radius: 50%; 
    width: 40px; 
    height: 40px; 
    animation: spin 1s linear infinite; 
    margin: 50px auto; 
}
@keyframes spin { 
    0% { transform: rotate(0deg); } 
    100% { transform: rotate(360deg); } 
}
.ds-sm-text { 
    margin-top: 15px; 
    font-size: 0.85rem; 
}
.ds-sm-text a { 
    color: #666; 
    text-decoration: underline; 
}

/* RESPONSIVE */
@media (max-width: 480px) {
    .ds-grid-options { 
        grid-template-columns: 1fr; 
    }
    .ds-wrapper { 
        padding-top: 60px; 
    }
    .ds-sound-text { 
        left: 10px; 
        font-size: 13px; 
    }
    .ds-fullscreen-btn, 
    .ds-exit-fullscreen-btn { 
        right: 10px; 
        padding: 6px 12px; 
        font-size: 13px; 
    }
    .ds-level3-pair {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    .ds-sign-image,
    .ds-level3-sign {
        height: 240px;
    }
}


/* Learning level */
#ds-learning-info h3 {
    font-family: 'Merriweather', serif;
    color: var(--ds-secondary);
    font-size: 1.3em;
}
#ds-learning-desc {
    font-size: 0.95em;
}
/* Driver Game / Signs: editorial academy layout. */
.ds-wrapper{--dgs-accent:#073D2A;--dgs-soft:#EAF0E9;--ds-primary:var(--dgs-accent);--ds-secondary:var(--dgs-accent);display:grid;grid-template-columns:220px minmax(0,1fr);max-width:1180px;padding:0;background:#F7F9F5;border:1px solid #e3e8e1;border-radius:26px;overflow:hidden;color:#24392e;isolation:isolate;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}
.ds-wrapper *{box-sizing:border-box}
.ds-wrapper h2,.ds-wrapper h3,.ds-wrapper h4{font-family:inherit;letter-spacing:-.035em;color:var(--dgs-accent)}
.dgs-sidebar{padding:32px 20px;background:var(--dgs-soft);border-right:1px solid #dce3dc;display:flex;flex-direction:column;gap:30px}
.dgs-brand{font-size:21px;font-weight:750;line-height:1.25;letter-spacing:-.05em}.dgs-brand span{display:block;font-size:9px;letter-spacing:.2em;font-weight:500;margin-top:10px}
.dgs-sidebar nav{display:grid;gap:8px}.dgs-sidebar nav button{background:transparent;border:0;border-radius:24px;padding:13px 15px;text-align:left;font-size:13px;cursor:pointer;color:#3e5047;white-space:normal;line-height:1.4}
.dgs-sidebar nav button.is-active{background:var(--dgs-accent);color:white;box-shadow:0 5px 12px #0001}
.dgs-tip{padding:22px 17px;background:white;border-radius:24px}.dgs-tip small,.dgs-heading small{font-size:9px;letter-spacing:.13em}.dgs-tip h3{font-size:21px;line-height:1.3;margin:16px 0}.dgs-tip p{font-size:12px;line-height:1.7;color:#5a6860;margin:0}.dgs-access{font-size:12px;line-height:1.6;color:#536358;margin-top:auto}
.dgs-main{padding:32px;min-width:0}.dgs-heading h2{font-size:28px;line-height:1.25;margin:7px 0 26px}.dgs-hero{background:radial-gradient(ellipse at 95% 10%,#d8e2bd99,transparent 65%),var(--dgs-accent);border-radius:30px;padding:30px 36px;color:white;box-shadow:0 14px 24px #183b201c;margin-bottom:26px}.dgs-hero span{font-size:9px;letter-spacing:.2em;border:1px solid #ffffff55;border-radius:20px;padding:6px 12px}.ds-wrapper .dgs-hero h3{color:white;font-size:36px;line-height:1.12;margin:22px 0 14px}.dgs-hero p{color:#fffC;font-size:13px;line-height:1.6;margin:0;max-width:340px}
.dgs-toolbar{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:24px}.ds-wrapper .ds-level-picker-container{position:static;z-index:1!important;flex:1}.ds-wrapper .ds-level-picker-container select{max-width:100%;font-family:inherit;font-size:13px;z-index:1;padding:10px 14px;border:1px solid #dce3dc;border-radius:20px}.ds-wrapper .ds-sound-text,.ds-wrapper .ds-fullscreen-btn,.ds-wrapper .ds-exit-fullscreen-btn{position:static;font-family:inherit;font-size:12px;border-radius:20px;padding:10px 13px;border:0;line-height:1.4}.ds-wrapper .ds-sound-text{background:var(--dgs-soft);color:var(--dgs-accent)}.ds-wrapper .ds-fullscreen-btn,.ds-wrapper .ds-exit-fullscreen-btn{background:var(--dgs-accent);color:white}
.dgs-practice-title{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:16px}.dgs-practice-title h3{font-size:23px;margin:0}.dgs-practice-title span{font-size:11px;color:#627066}
.ds-wrapper .ds-card{padding:24px;border:0;border-radius:26px;box-shadow:0 3px 16px #233b2a06;min-width:0}.ds-wrapper .ds-header{margin-bottom:15px;font-size:12px;color:#617365}.ds-wrapper .ds-sign-image{width:100%;height:clamp(260px,32vw,400px);padding:0;border:0;background:white;border-radius:18px;margin-bottom:24px}.ds-wrapper .ds-sign-image img,.ds-wrapper .ds-level3-sign img{display:block;width:100%;height:100%;max-width:100%;max-height:100%;aspect-ratio:auto;object-fit:contain;margin:0;padding:0}.ds-wrapper .ds-level3-sign{background:white;border:0;padding:0;border-radius:18px}.ds-wrapper .ds-level3-pair{gap:16px}.ds-wrapper .ds-option-btn{border:1px solid #e2e8df;border-radius:17px;font-family:inherit;font-size:14px;font-weight:500;line-height:1.5;padding:18px;text-align:left;min-height:65px}.ds-wrapper .ds-btn-primary,.ds-wrapper .ds-btn-premium,.ds-wrapper .ds-btn-secondary{background:var(--dgs-accent);color:white}.ds-wrapper .ds-feedback,.ds-wrapper .ds-reveal-content{background:var(--dgs-soft);border:0;border-radius:18px}.ds-wrapper button:focus-visible,.ds-wrapper select:focus-visible{outline:3px solid var(--dgs-accent);outline-offset:3px}.ds-wrapper:fullscreen,.ds-wrapper:-webkit-full-screen{width:100%;max-width:none;border-radius:0;align-items:start;height:100%;overflow:auto}
@media(max-width:780px){.ds-wrapper{grid-template-columns:1fr;border-radius:20px}.dgs-sidebar{padding:20px;border-right:0;border-bottom:1px solid #dce3dc;gap:15px}.dgs-brand{font-size:20px}.dgs-brand span{display:none}.dgs-sidebar nav{grid-template-columns:repeat(4,minmax(0,1fr));gap:5px}.dgs-sidebar nav button{font-size:11px;padding:10px 7px;text-align:center;border-radius:15px}.dgs-tip,.dgs-access{display:none}.dgs-main{padding:20px}.dgs-heading h2{font-size:26px}.dgs-hero{padding:27px;border-radius:24px}.ds-wrapper .dgs-hero h3{font-size:32px}.dgs-practice-title span{display:none}.ds-wrapper .ds-card{padding:16px}.ds-wrapper .ds-level3-pair{grid-template-columns:1fr 1fr;gap:10px}.ds-wrapper .ds-level3-sign{height:auto}.ds-wrapper .ds-sign-image{height:300px}.ds-wrapper .ds-grid-options{grid-template-columns:1fr 1fr;gap:10px}.ds-wrapper .ds-option-btn{font-size:13px;padding:13px}.ds-wrapper .ds-level-picker-container{flex-basis:100%}.ds-wrapper .ds-level-picker-container select{width:100%}}
@media(prefers-reduced-motion:reduce){.ds-wrapper *{transition:none!important}}
/* Fit the image container to a sign instead of leaving a wide, empty stage. */
.ds-wrapper .ds-sign-image{width:100%;max-width:400px;height:auto;aspect-ratio:1;margin-left:auto;margin-right:auto}
@media(max-width:780px){.dgs-heading h2{font-size:23px;margin-bottom:18px}.dgs-hero{padding:22px;margin-bottom:20px}.ds-wrapper .dgs-hero h3{font-size:27px;margin:16px 0 8px}.dgs-hero p{font-size:12px}.dgs-main{padding:16px}.dgs-toolbar{margin-bottom:18px}}
/* 1.1: navigation above the game at every width; fullscreen is practice only. */
.ds-wrapper{display:block}.dgs-sidebar{border-right:0;border-bottom:1px solid #dce3dc;padding:20px 28px;gap:16px}.dgs-brand{font-size:21px}.dgs-brand span{display:none}.dgs-sidebar nav{grid-template-columns:repeat(4,minmax(0,1fr));gap:10px}.dgs-sidebar nav button{text-align:center}.dgs-access{margin:0}.dgs-main{padding:24px 32px}.dgs-hero{padding:24px 30px}.ds-wrapper .dgs-hero h3{font-size:30px;margin:16px 0 10px}
#dgs-practice{min-width:0}.ds-wrapper #ds-level2-ui{text-align:center}.ds-wrapper #ds-reveal-content{text-align:left}.dgs-toolbar [hidden]{display:none!important}
#dgs-practice:fullscreen,#dgs-practice:-webkit-full-screen,#dgs-practice.dgs-fullscreen-fallback{box-sizing:border-box;width:100%;height:100%;max-width:none;overflow:auto;background:#f7f9f5;padding:18px clamp(12px,4vw,64px);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:#24392e}
#dgs-practice.dgs-fullscreen-fallback{position:fixed;inset:0;z-index:2147483646}body.dgs-fullscreen-open{overflow:hidden}#dgs-practice:fullscreen .ds-card,#dgs-practice.dgs-fullscreen-fallback .ds-card{max-width:1000px;margin:auto}#dgs-practice:fullscreen .ds-sign-image,#dgs-practice.dgs-fullscreen-fallback .ds-sign-image{max-width:min(420px,45vh)}
#ds-feedback{position:relative!important;top:auto!important;left:auto!important;width:100%!important;height:auto!important;margin-top:16px}.ds-feedback-overlay-content{background:var(--dgs-soft);border:0;border-radius:18px}
@media(max-width:780px){.dgs-sidebar{padding:14px 16px;gap:10px}.dgs-sidebar nav{gap:5px}.dgs-sidebar nav button{padding:9px 5px;font-size:11px}.dgs-main{padding:12px}.dgs-heading h2{font-size:20px;margin:4px 0 12px}.dgs-hero{padding:16px 20px;margin-bottom:14px}.ds-wrapper .dgs-hero h3{font-size:24px;margin:14px 0 8px}.dgs-hero p{display:none}.dgs-toolbar{gap:7px;margin-bottom:12px}.ds-wrapper .ds-sound-text,.ds-wrapper .ds-fullscreen-btn,.ds-wrapper .ds-exit-fullscreen-btn{padding:9px 11px;font-size:11px}.ds-wrapper .ds-card{padding:12px}.ds-wrapper .ds-sign-image{max-width:min(320px,65vw);margin-bottom:14px}.dgs-practice-title{margin-bottom:10px}.dgs-practice-title h3{font-size:19px}.dgs-dashboard{margin:12px 0}.ds-wrapper .ds-option-btn{min-height:48px;padding:11px}.ds-wrapper .ds-header{margin-bottom:10px}}
/* 1.2: one mode picker, including progress; banner caption at every width. */
.ds-wrapper .dgs-hero .dgs-banner-caption{display:block;margin:10px 0 0;max-width:none}.ds-wrapper #dgs-progress-screen{padding:20px;margin:10px 0}.ds-wrapper #dgs-progress-screen[hidden]{display:none!important}.ds-wrapper #dgs-progress-screen>h3{margin-bottom:8px}.ds-wrapper #dgs-progress-screen .dgs-sync{float:none;display:block;margin-bottom:14px}

/* Labels live below each sign and never cover the artwork. */
.ds-wrapper .ds-level3-item{min-width:0;align-self:start;border:1px solid #e3e8ee;border-radius:16px;overflow:hidden;background:#fff}
.ds-wrapper .ds-level3-item .ds-level3-sign{width:100%;max-width:none;margin:0;border:0;border-radius:0;aspect-ratio:1;height:auto}
.ds-wrapper .ds-level3-caption{padding:16px;text-align:left;border-top:1px solid #e8edf3}
.ds-wrapper .ds-level3-caption h3{position:static;margin:0 0 9px;color:var(--dgs-accent,#0f57fb);font-size:18px;font-weight:750;line-height:1.3;overflow-wrap:anywhere}
.ds-wrapper .ds-level3-caption p{margin:0;color:#586478;font-size:14px;font-weight:400;line-height:1.6;overflow-wrap:anywhere}
.ds-wrapper .ds-level-picker-container select{appearance:none;-webkit-appearance:none;min-height:44px;padding:10px 44px 10px 16px!important;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='9' viewBox='0 0 14 9'%3E%3Cpath d='m2 2 5 5 5-5' fill='none' stroke='%23405269' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 16px center;background-size:14px 9px}

.ds-tutorial-hint{position:absolute;top:0;bottom:0;z-index:8;pointer-events:none;border:2px solid var(--dgs-accent,#0f57fb);background:linear-gradient(transparent 45%,#0f57fb30);border-radius:15px;display:flex;align-items:flex-end;padding:12px;box-sizing:border-box}.ds-tutorial-hint.right{left:50%;right:0}.ds-tutorial-hint.left{left:0;right:50%}.ds-tutorial-hint.whole{left:0;right:0}.ds-tutorial-hint span{background:var(--dgs-accent,#0f57fb);color:white;border-radius:12px;padding:10px;font-size:12px;line-height:1.5;box-shadow:0 3px 12px #0002;animation:dgsHintPulse 1.5s ease-in-out infinite}@keyframes dgsHintPulse{50%{transform:translateY(-5px)}}@media(prefers-reduced-motion:reduce){.ds-tutorial-hint span{animation:none}}