body {
    margin: 0;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
    font-size: clamp(16px, 1.1vw + 10px, 24px);
    line-height: 1.4;
    background-color: #b0e4cc;
    color: #140909;
}

h1 {
    text-align: center;
    color: #285a48;
}
h2 {
    text-align: center;
    color: #408a71;
}

h1 {
    font-size: clamp(1.8rem, 1.8vw + 1rem, 3.4rem);
    margin: 0.5em 0;
}

h2 {
    font-size: clamp(1.2rem, 1vw + 0.9rem, 2.1rem);
}

#mode-toggle {
    cursor: pointer;
    user-select: none;
}

.content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 20px;
    flex: 1 1 auto;
    padding: 16px;
    box-sizing: border-box;
}

.content > div {
    width: 50%;
    text-align: center;
}

.content ul {
    list-style: none;
    padding: 0;
}

.content li {
    font-size: clamp(1rem, 0.7vw + 0.8rem, 1.6rem);
    margin: 0.35em 0;
}

.clock {
    margin-top: auto;
    width: 100%;
    padding: 10px 0;
    box-sizing: border-box;
}

.clock .countdown {
    text-align: center;
    font-size: clamp(1.5rem, 1.6vw + 1rem, 3.2rem);
    font-weight: 700;
    margin: 0.25em 0;
}

.editor-input {
    width: 90%;
    min-height: 140px;
    resize: vertical;
    font-family: inherit;
    font-size: clamp(1rem, 0.7vw + 0.85rem, 1.5rem);
    padding: 8px;
    box-sizing: border-box;
}

.time-input {
    display: block;
    margin: 0 auto;
    font-size: clamp(1rem, 0.8vw + 0.85rem, 1.7rem);
    padding: 6px 10px;
}

@media (max-width: 900px) {
    .content {
        flex-direction: column;
    }

    .content > div {
        width: 100%;
    }
}

@media (min-width: 1600px) {
    .content {
        padding: 24px;
    }

    .clock {
        padding: 14px 0;
    }
}