:root {
    --bg: #f5f7fb;
    --panel: #ffffff;
    --primary: #5b6cff;
    --primary-dark: #4054d9;
    --text: #1e2430;
    --muted: #6d7787;
    --border: #e7ebf3;
    --answer-bg: #f8f9fd;
    --shadow: 0 18px 40px rgba(42, 52, 89, 0.08);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    display: grid;
    place-items: center;
    font-family: Inter, "Segoe UI", Roboto, sans-serif;
    background: linear-gradient(180deg, #eef3ff 0%, var(--bg) 100%);
    color: var(--text);
}

.quiz-card {
    width: min(760px, calc(100vw - 32px));
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 24px;
    box-shadow: var(--shadow);
    padding: 28px 28px 22px;
}

.topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.chip {
    background: #edf1ff;
    color: var(--primary-dark);
    border-radius: 999px;
    padding: 7px 12px;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.progress {
    color: var(--muted);
    font-size: 13px;
    font-weight: 600;
}

.question {
    margin: 0 0 18px;
    font-size: clamp(1.4rem, 2vw, 2rem);
    line-height: 1.3;
    font-weight: 700;
}

.image-wrap {
    border-radius: 18px;
    overflow: hidden;
    border: 1px solid var(--border);
    background: #eef3ff;
    margin-bottom: 20px;
    width: 100%;
    max-width: 600px;
    margin-inline: auto;
}

.image-wrap canvas {
    display: block;
    width: 600px;
    height: 500px;
    max-width: 100%;
    background: #ffffff;
}

.answer-panel {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 8px;
}

.answer-title {
    margin: 0;
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text);
}

.blank-label {
    font-size: 0.88rem;
    color: var(--muted);
    font-weight: 600;
}

.blank-input {
    width: 100%;
    background: var(--answer-bg);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 16px 18px;
    font-size: 1rem;
    color: var(--text);
    outline: none;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.blank-input:focus {
    border-color: #ccd7ff;
    box-shadow: 0 0 0 4px rgba(91, 108, 255, 0.12);
}

.submit-btn {
    margin-top: 4px;
    width: 100%;
    border: none;
    border-radius: 14px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: #ffffff;
    font-size: 1rem;
    font-weight: 700;
    padding: 15px 18px;
    cursor: pointer;
    transition: transform 0.15s ease, box-shadow 0.15s ease;
    box-shadow: 0 12px 24px rgba(91, 108, 255, 0.2);
}

.submit-btn:hover {
    transform: translateY(-1px);
}

.submit-btn:active {
    transform: translateY(0);
}

@media (max-width: 560px) {
    .quiz-card {
        padding: 20px 18px 18px;
        border-radius: 18px;
    }

    .topbar {
        margin-bottom: 12px;
    }
}