/* ===== RESET & BASE ===== */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
:root{
    --bg:#d5c7b3;--bg-light:#ded2c0;--card-bg:#c9bca8;--card-border:#b8a98f;
    --text:#000;--text-light:#000;--btn-bg:#b8a98f;--btn-hover:#a89878;
    --btn-text:#000;--warning:#8b2e15;--success:#2e7d32;--danger:#c62828;
    --safe-green:#558b2f;
    --font-display:'Playfair Display',Georgia,serif;
    --font-body:'Source Serif 4',Georgia,serif;
}
html{font-size:16px;scroll-behavior:smooth}
body{font-family:var(--font-body);background:var(--bg);color:var(--text);min-height:100vh;overflow-x:hidden}

/* ===== SCREENS ===== */
#app{width:100%;min-height:100vh}
.screen{display:none;width:100%;max-width:1400px;min-height:100vh;margin:0 auto;padding:40px 64px 32px;animation:fadeIn .5s ease;flex-direction:column}
.screen.active{display:flex}
@keyframes fadeIn{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}

/* ===== TYPOGRAPHY ===== */
h1,h2,h3{font-family:var(--font-display);font-weight:400}
.step-title{font-size:2.4rem;text-align:center;margin-bottom:28px;letter-spacing:-.01em;line-height:1.2}
.landing-title{font-size:3.4rem;line-height:1.15;letter-spacing:-.02em}
.complete-title{font-style:italic}

/* ===== BUTTONS ===== */
.btn{font-family:var(--font-body);font-size:1rem;border:none;cursor:pointer;border-radius:24px;transition:all .25s ease;color:var(--btn-text)}
.btn-start{background:var(--btn-bg);padding:14px 48px;font-size:1.15rem;letter-spacing:.02em}
.btn-start:hover{background:var(--btn-hover);transform:translateY(-1px);box-shadow:0 4px 16px rgba(0,0,0,.1)}
.btn-nav{background:var(--btn-bg);padding:10px 32px;font-size:.95rem}
.btn-nav:hover:not(:disabled){background:var(--btn-hover);transform:translateY(-1px)}
.btn-nav:disabled{opacity:.45;cursor:not-allowed}
.nav-row{display:flex;justify-content:space-between;align-items:center;margin-top:auto;padding-top:24px}
#screen-step1 .nav-row{margin-top:24px}

/* ===== LANDING ===== */
.landing-content{display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;flex:1;gap:20px;padding:60px 20px}
.landing-desc{font-size:1.05rem;line-height:1.7;max-width:640px;color:var(--text)}
.back-link{color:var(--text);text-decoration:underline;font-size:.95rem;margin-top:8px;transition:opacity .2s}
.back-link:hover{opacity:.7}

/* ===== INFO CARDS ===== */
.info-card{background:var(--card-bg);border-left:4px solid var(--card-border);border-radius:8px;padding:20px 24px;margin-bottom:16px}
.info-card h3{font-size:1.2rem;margin-bottom:10px;font-style:italic}
.info-card p{font-size:.92rem;line-height:1.65}
.info-card ul{list-style:disc;padding-left:20px;margin-bottom:10px}
.info-card ul li{font-size:.92rem;line-height:1.6;margin-bottom:4px}
.info-card-wide{max-width:100%}
.warning-text{color:#000;font-weight:700;font-size:.92rem;margin-top:8px}

/* ===== STEP LAYOUTS ===== */
.step1-layout{display:flex;gap:32px;flex:1}
.step1-text-col{flex:1;min-width:0}
.step1-img-col{flex:0 0 380px;display:flex;align-items:center;justify-content:center}
.step1-signs-img{max-width:100%;max-height:520px;object-fit:contain;border-radius:8px}
.inspect-comparison{display:flex;justify-content:center;gap:250px;margin-top:28px;flex:1;align-items:center}
.inspect-item{text-align:center}
.inspect-item img{height:320px;object-fit:contain;border-radius:6px}
.inspect-label{font-size:1rem;margin-top:14px;font-weight:600}
.inspect-label-warn{font-weight:800;text-transform:uppercase;letter-spacing:.02em}
.grip-examples{display:flex;justify-content:center;gap:40px;margin-top:24px;flex:1;align-items:center}
.grip-item{position:relative;text-align:center}
.grip-item img{height:300px;object-fit:contain;border-radius:6px}
.grip-badge{position:absolute;top:-8px;right:-8px;width:36px;height:36px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1.3rem;font-weight:700;color:#fff}
.grip-correct{background:var(--success)}
.grip-wrong{background:var(--danger)}
.step4-layout,.step5-layout,.step6-layout{display:flex;gap:40px;align-items:center;flex:1}
.step4-text,.step5-text,.step6-text{flex:1}
.step4-img,.step5-img,.step6-img{flex:0 0 500px;display:flex;align-items:center;justify-content:center}
.step4-img img,.step5-img img,.step6-img img{max-width:140%;max-height:450px;object-fit:contain;border-radius:8px}
.epipen-large{max-height:560px!important;max-width:160%!important}

/* ===== TEST SHARED ===== */
.test-subtitle{text-align:center;font-size:1rem;color:var(--text-light);margin-bottom:8px}
.test-score{text-align:center;font-family:var(--font-display);font-size:1.8rem;margin-bottom:20px}
.test-feedback{text-align:center;font-size:1rem;min-height:32px;padding:8px;margin-top:12px;font-weight:600;border-radius:8px;transition:all .3s ease}
.test-feedback.correct{color:var(--success);background:rgba(46,125,50,.1)}
.test-feedback.wrong{color:var(--danger);background:rgba(198,40,40,.1)}

/* ===== TEST 1: IDENTIFY ===== */
.test1-people{display:flex;justify-content:center;gap:28px;flex-wrap:wrap;flex:1;align-items:center}
.test1-person{cursor:pointer;border-radius:12px;border:4px solid transparent;padding:8px;transition:all .25s ease}
.test1-person:hover{border-color:var(--card-border);transform:scale(1.03)}
.test1-person img{height:240px;object-fit:contain;border-radius:8px}
.test1-person.selected-correct{border-color:var(--success);background:rgba(46,125,50,.1)}
.test1-person.selected-wrong{border-color:var(--danger);background:rgba(198,40,40,.1)}
.test1-person.disabled{pointer-events:none;opacity:.5}

/* ===== TEST 2: SAFE/NOT SAFE ===== */
.test2-area{display:flex;align-items:center;justify-content:center;gap:40px;flex:1}
.swipe-btn{display:flex;align-items:center;gap:10px;font-size:1.4rem;font-weight:700;cursor:pointer;padding:16px 24px;border-radius:12px;transition:all .25s ease;user-select:none}
.swipe-left{color:var(--danger)}
.swipe-left:hover{background:rgba(198,40,40,.1);transform:translateX(-4px)}
.swipe-right{color:var(--safe-green)}
.swipe-right:hover{background:rgba(85,139,47,.1);transform:translateX(4px)}
.swipe-arrow{font-size:1.8rem}
.epipen-swipe-container{display:flex;justify-content:center;align-items:center}
.epipen-swipe-img{height:340px;object-fit:contain;transition:all .4s ease}
.epipen-swipe-img.swipe-anim-left{transform:translateX(-120px) rotate(-10deg);opacity:0}
.epipen-swipe-img.swipe-anim-right{transform:translateX(120px) rotate(10deg);opacity:0}

/* ===== TEST 3: GRIP DRAG ===== */
.grip-test-area{display:flex;justify-content:center;align-items:center;gap:80px;flex:1;position:relative}
.grip-epipen-container{position:relative;display:inline-block}
.grip-epipen-img{height:400px;object-fit:contain;transition:opacity .3s ease}
.grip-result-img{height:400px;object-fit:contain;animation:fadeIn .4s ease}
.grip-zone{position:absolute;left:0;width:100%;border:2px dashed transparent;border-radius:8px;transition:all .3s ease;z-index:2}
.grip-zone-top{top:0;height:30%}
.grip-zone-mid{top:30%;height:40%}
.grip-zone-bot{top:70%;height:30%}
.grip-zone.drag-over{border-color:var(--btn-bg);background:rgba(184,169,143,.25)}
.grip-hand{height:160px;object-fit:contain;cursor:grab;transition:transform .2s ease;user-select:none;-webkit-user-drag:element}
.grip-hand:active{cursor:grabbing}
.grip-hand.placed{display:none}
.grip-combo-img{max-width:100%;max-height:540px;object-fit:contain;border-radius:8px}

/* ===== TEST 4: REMOVE CAP ===== */
.cap-test-area{display:flex;justify-content:center;align-items:center;flex:1}
.cap-assembly{position:relative;display:inline-flex;justify-content:center}
/* Body is the base layer */
.body-static img{height:500px;object-fit:contain;pointer-events:none;display:block}
/* Cap overlaps the top of the body — positioned to sit inside the slot */
.cap-draggable{
    position:absolute;
    top:-10px;
    left: -6px;;
    right:0;
    z-index:5;cursor:grab;user-select:none;
}
.cap-draggable:hover{filter:brightness(1.1)}
.cap-draggable:active{cursor:grabbing}
.cap-draggable img{width:96%;height:auto;object-fit:contain;pointer-events:none;display:block;margin:0 auto}
.cap-draggable.cap-fly{animation:capFlyUp .5s ease forwards;pointer-events:none}
@keyframes capFlyUp{
    0%{transform:translateY(0);opacity:1}
    100%{transform:translateY(-120px);opacity:0}
}

/* ===== TEST 5 PHASE 1: BODY SELECT ===== */
.inject-phase1{display:flex;justify-content:center;align-items:center;flex:1}
.body-clickable-wrap{position:relative;display:inline-block}
.body-img{height:480px;object-fit:contain}
.body-node{position:absolute;width:30px;height:30px;border-radius:50%;background:rgba(255,255,255,.9);border:2px solid rgba(180,170,155,.5);cursor:pointer;transition:all .25s;z-index:2;box-shadow:0 2px 8px rgba(0,0,0,.12)}
.body-node:hover{transform:scale(1.3);background:#fff;box-shadow:0 3px 14px rgba(0,0,0,.22)}
.body-node.node-correct{background:rgba(46,125,50,.6);border-color:var(--success);transform:scale(1.3)}
.body-node.node-wrong{background:rgba(198,40,40,.5);border-color:var(--danger);animation:nodeShake .4s ease}
@keyframes nodeShake{0%,100%{transform:translateX(0)}25%{transform:translateX(-6px)}75%{transform:translateX(6px)}}
/* 5 nodes matching Figma exactly: shoulder-R, shoulder-L, belly, outer-thigh (correct), left-shin */
.body-node[data-spot="shoulder-r"]{top:18%;left:62%}
.body-node[data-spot="shoulder-l"]{top:24%;left:28%}
.body-node[data-spot="belly"]     {top:40%;left:48%}
.body-node[data-spot="thigh"]     {top:54%;left:58%}
.body-node[data-spot="shin"]      {top:72%;left:38%}

/* ===== TEST 5: INJECTION (combined layout) ===== */
.inject-combined{display:flex;gap:20px;flex:1;align-items:stretch;animation:fadeIn .4s ease}
.inject-window{background:var(--card-bg);border-radius:16px;padding:24px;position:relative;flex:0 0 42%;min-height:460px;display:flex;flex-direction:column;justify-content:space-between;animation:fadeIn .4s ease}
.inject-timer{position:absolute;top:20px;right:24px;background:#2c2418;color:#fff;font-family:var(--font-display);font-size:1.5rem;padding:10px 22px;border-radius:8px;letter-spacing:.1em;z-index:5}
.inject-scene{display:flex;flex-direction:column;align-items:flex-start;flex:1;position:relative}
.inject-epipen{height:200px;object-fit:contain;position:relative;z-index:4;user-select:none;margin-left:10px;cursor:grab;transition:transform .3s ease}
.inject-epipen:active{cursor:grabbing}
.inject-epipen.injected{cursor:default}
.inject-epipen.pen-on-leg{pointer-events:none}
.inject-leg-zone{position:relative;width:100%;margin-top:auto;border-radius:12px;transition:all .3s ease;padding:4px}
.inject-thigh-target{position:absolute;top:8%;left:5%;width:22%;height:35%;border-radius:12px;border:3px dashed rgba(184,169,143,.5);transition:all .3s ease;z-index:3;cursor:default}
.inject-thigh-target.thigh-hover{border-color:var(--btn-bg);background:rgba(184,169,143,.25)}
.inject-thigh-target.thigh-active{border-color:var(--success);background:rgba(46,125,50,.12)}
.inject-leg{width:100%;max-height:320px;object-fit:contain;object-position:left bottom;position:relative;z-index:2}
.inject-body-center{display:flex;align-items:center;justify-content:center;flex:1}
.body-numbered-wrap{position:relative;display:inline-block}
.body-img-numbered{height:520px;object-fit:contain}
.inject-number-btns{display:flex;flex-direction:column;gap:12px;justify-content:center}
.number-btn{width:100px;height:70px;background:var(--card-bg);border:2px solid var(--card-border);border-radius:20px;font-family:var(--font-display);font-size:2.5rem;color:var(--text);cursor:pointer;transition:all .25s ease}
.number-btn:hover:not(:disabled){background:var(--btn-hover);transform:scale(1.05)}
.number-btn:disabled{opacity:.5;cursor:not-allowed}
.number-btn.num-correct{background:rgba(46,125,50,.3);border-color:var(--success)}
.number-btn.num-wrong{background:rgba(198,40,40,.2);border-color:var(--danger);animation:nodeShake .4s ease}
.inject-hint{text-align:center;font-size:.9rem;color:var(--text-light);margin-top:12px;font-style:italic}

/* ===== VIDEO DEMO ===== */
.video-subtitle{text-align:center;font-size:1.2rem;margin-bottom:32px;color:var(--text)}
.video-wrapper{display:flex;justify-content:center;align-items:center;flex:1}
.video-wrapper iframe{width:100%;max-width:960px;aspect-ratio:16/9;height:auto;border-radius:12px;border:none}

/* ===== COMPLETION ===== */
.ambulance-gif{max-width:320px;margin-top:20px;border-radius:12px}

/* ===== RESPONSIVE ===== */
@media(max-width:768px){
    .screen{padding:24px 20px 20px}
    .step-title{font-size:1.6rem}
    .landing-title{font-size:2.2rem}
    .step1-layout,.step4-layout,.step5-layout,.step6-layout{flex-direction:column}
    .step1-img-col,.step4-img,.step5-img,.step6-img{flex:none}
    .step1-signs-img{max-height:280px}
    .inspect-comparison{flex-direction:column;gap:24px}
    .inspect-item img{height:200px}
    .grip-examples{gap:16px}
    .grip-combo-img{max-height:280px}
    .test1-person img{height:160px}
    .test2-area{flex-direction:column;gap:16px}
    .epipen-swipe-img{height:240px}
    .grip-test-area{flex-direction:column;gap:30px}
    .grip-epipen-img{height:280px}
    .body-img{height:360px}
    .body-img-numbered{height:300px}
    .inject-combined{flex-direction:column}
    .inject-window{min-height:300px}
    .inject-epipen{height:140px}
    .inject-leg{max-height:220px}
    .number-btn{width:60px;height:48px;font-size:1.6rem;border-radius:14px}
    .inject-number-btns{flex-direction:row;flex-wrap:wrap;gap:8px}
    .body-img-numbered{height:300px}
}