body, html {
    margin: 0;
    padding: 0;
    font-family: "Segoe UI", Arial, sans-serif;
    background-color: #0b0e1a;
    color: #f0f0f0;
}

/* HERO */
.biblioteka-hero {
    text-align: center;
    padding: 50px 20px 30px;
}

.biblioteka-hero h1 {
    font-size: 48px;
    color: #c49c29;
    text-shadow: 2px 2px 5px rgba(0,0,0,0.6);
}

.linia-dekoracyjna {
    width: 180px;
    height: 4px;
    background: linear-gradient(90deg, transparent, #c49c29, transparent);
    margin: 20px auto;
}

.biblioteka-hero p {
    color: #ccc;
    font-size: 16px;
}

/* PANEL */
.biblioteka-panel {
    display: flex;
    justify-content: space-between;
    gap: 30px;
    padding: 30px 10%;
    min-height: 70vh;
}

/* Lewa kolumna – materiały */
.panel-lewy {
    flex: 1;
    background: url('../img/papirus.png') no-repeat center/cover;
    padding: 30px;
    border-radius: 20px;
    color: #2c1a00;
    text-shadow: 1px 1px 2px rgba(255,255,255,0.3);
}

.panel-lewy h2 {
    margin-top: 0;
    font-size: 28px;
    color: #c49c29;
}

.panel-lewy ul {
    list-style: disc;
    margin-left: 20px;
    margin-top: 15px;
    color: #fff;
}

/* Prawa kolumna – muzyka i pomodoro */
.panel-prawy {
    flex: 0.5;
    background: #1a0b2e;
    padding: 25px;
    border-radius: 20px;
}

.panel-prawy h2 {
    margin-top: 0;
    font-size: 28px;
    color: #c49c29;
}

.panel-prawy p {
    margin: 15px 0 10px;
}

audio {
    width: 100%;
    margin-bottom: 20px;
}

#start-timer {
    background-color: #c49c29;
    color: #000;
    border: none;
    padding: 12px 30px;
    font-size: 16px;
    font-weight: bold;
    border-radius: 20px;
    cursor: pointer;
    transition: 0.3s;
}

#start-timer:hover {
    background-color: #fff;
    box-shadow: 0 0 15px #c49c29;
}

#timer-display {
    font-size: 24px;
    margin-top: 10px;
    text-align: center;
}