* { box-sizing: border-box; margin: 0; padding: 0; }
body {
    font-family: 'Segoe UI', Tahoma, sans-serif;
    background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
    min-height: 100vh;
    display: flex; justify-content: center; align-items: center;
    padding: 20px; color: #333;
}
.container {
    background: #fff; max-width: 720px; width: 100%;
    border-radius: 16px; overflow: hidden;
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}
header {
    background: linear-gradient(135deg, #2a5298, #1e3c72);
    color: #fff; padding: 25px 30px; text-align: center;
}
header h1 { font-size: 22px; margin-bottom: 6px; }
header p  { font-size: 14px; opacity: .85; }

.progress-bar { height: 6px; background: #e0e0e0; }
.progress-fill {
    height: 100%; width: 0%;
    background: linear-gradient(90deg, #4facfe, #00f2fe);
    transition: width .4s ease;
}
.content { padding: 30px; }

#start-screen h2, #info-screen h2 {
    font-size: 22px; color: #2a5298; margin-bottom: 14px;
}
#start-screen p, #info-screen p { margin-bottom: 10px; line-height: 1.5; }
#start-screen ul { margin: 12px 0 20px 22px; line-height: 1.7; }

.counter {
    display: flex; justify-content: space-between;
    font-size: 13px; color: #888; margin-bottom: 14px;
}
.score-live { color: #2a5298; font-weight: 600; }

.question {
    font-size: 18px; font-weight: 600;
    margin-bottom: 20px; line-height: 1.4;
}
.answers { display: flex; flex-direction: column; gap: 12px; }
.answer {
    padding: 14px 18px;
    border: 2px solid #ddd; border-radius: 10px;
    cursor: pointer; transition: all .2s;
    font-size: 15px; background: #fafafa;
}
.answer:hover {
    border-color: #2a5298;
    background: #f0f6ff;
    transform: translateX(4px);
}
.answer.selected {
    border-color: #2a5298; background: #dbe9ff;
    font-weight: 600;
}
.answer.disabled { pointer-events: none; opacity: .85; }

.feedback {
    margin-top: 18px; padding: 12px 16px;
    border-radius: 8px; font-size: 15px;
    display: none; background: #e9f2ff; color: #2a5298;
    border-left: 4px solid #2a5298;
}
.feedback.show { display: block; animation: fade .3s; }
@keyframes fade { from {opacity:0;transform:translateY(-6px);} to {opacity:1;transform:translateY(0);} }

.btn {
    margin-top: 22px; padding: 12px 30px;
    background: linear-gradient(135deg, #2a5298, #1e3c72);
    color: #fff; border: none; border-radius: 10px;
    font-size: 16px; font-weight: 600; cursor: pointer;
    width: 100%; transition: transform .15s, box-shadow .2s;
}
.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(42,82,152,.4);
}
.btn.hidden { display: none; }

form { display: flex; flex-direction: column; gap: 14px; margin-top: 16px; }
form label { font-size: 15px; color: #333; display: flex; flex-direction: column; gap: 6px; }
form input {
    padding: 12px 14px; font-size: 15px;
    border: 2px solid #ddd; border-radius: 10px;
    transition: border-color .2s;
}
form input:focus { outline: none; border-color: #2a5298; }

.result { text-align: center; }
.result h2 { color: #2a5298; margin-bottom: 14px; }
.score {
    font-size: 54px; font-weight: 800;
    background: linear-gradient(135deg, #2a5298, #4facfe);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text; margin: 10px 0;
}
.emoji { font-size: 60px; margin-bottom: 10px; }
.result p { font-size: 16px; color: #555; margin: 8px 0; }