/* ===============================
   ZÁKLAD
================================ */

* {
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f4f7fb;
    color: #333;
    margin: 0;
    padding: 0;
}

h1 {
    text-align: center;
    color: #2c3e50;
    margin: 30px 0;
}

/* ===============================
   KONTEJNER
================================ */

.container {
    max-width: 900px;
    margin: 20px auto 50px auto;
    background: #ffffff;
    padding: 30px;
    border-radius: 14px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

/* ===============================
   TLAČÍTKA
================================ */

.button,
button {
    display: inline-block;
    padding: 12px 26px;
    background: linear-gradient(135deg, #3498db, #2980b9);
    color: #fff;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s ease;
}

.button:hover,
button:hover {
    background: linear-gradient(135deg, #2980b9, #2471a3);
    transform: translateY(-1px);
}

/* ===============================
   QUIZ – OTÁZKY
================================ */

.question-card {
    padding: 25px;
    margin-bottom: 25px;
    border-radius: 12px;
    background: linear-gradient(180deg, #f8fafc, #eef3f8);
    border-left: 6px solid #3498db;
}

/* zvýrazněná otázka */
.question-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: #2c3e50;
    margin-bottom: 18px;
}

.question-number {
    color: #3498db;
    margin-right: 8px;
}

/* ===============================
   ODPOVĚDI
================================ */

.answer-option {
    display: block;
    padding: 14px 16px;
    margin: 10px 0;
    border-radius: 10px;
    background: #ffffff;
    border: 1px solid #dfe6ee;
    cursor: pointer;
    transition: all 0.2s ease;
}

.answer-option:hover {
    background: #edf4ff;
    border-color: #3498db;
}

.answer-option input {
    margin-right: 12px;
    transform: scale(1.2);
}

.answer-text {
    vertical-align: middle;
}

/* ===============================
   VÝSLEDKY
================================ */

.result-summary {
    text-align: center;
    font-size: 1.2rem;
    font-weight: bold;
    margin-bottom: 35px;
}

.answer-box {
    padding: 14px 18px;
    margin: 8px 0;
    border-radius: 10px;
    border: 1px solid #ddd;
    background-color: #f8fafc;
}

.answer-box.correct {
    background-color: #e6f4ea;
    border-color: #28a745;
}

.answer-box.wrong {
    background-color: #fdecea;
    border-color: #dc3545;
}

.tag {
    font-size: 0.9rem;
    font-weight: 700;
    margin-left: 10px;
}

/* ===============================
   ODDĚLOVAČ
================================ */

hr {
    margin: 30px 0;
    border: 0;
    border-top: 1px solid #ddd;
}

/* ===============================
   RESPONZIVITA
================================ */

@media (max-width: 600px) {
    .container {
        padding: 20px;
    }

    .question-title {
        font-size: 1.1rem;
    }
}