@charset "utf-8";
@import url('https://fonts.googleapis.com/css2?family=Noto+Color+Emoji&family=Noto+Sans+JP:wght@100..900&family=Noto+Sans:ital,wght@0,100..900;1,100..900&display=swap');

body {
    font-family: "Noto Sans", "Noto Sans JP", sans-serif;
    font-size: 15px;
    color: #222;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding-top: 2rem;
    padding-bottom: 2rem;
    background: #f4f6fa;
    line-height: 1.6;
    margin: 0;
}

main {
    background: #fff;
    max-width: 540px;
    margin: 0;
    border-radius: 16px;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.07);
    padding: 32px 20px 24px 20px;
}

h1 {
    font-size: 1.7em;
    font-weight: 700;
    margin-bottom: 0.5em;
    letter-spacing: 0.02em;
    color: #1976d2;
    text-align: center;
}

p {
    margin: 0.7em 0 1.2em 0;
    color: #444;
    text-align: center;
}

form {
    display: flex;
    flex-direction: column;
    gap: 1.1em;
    align-items: center;
}

label {
    font-size: 1em;
    margin: 0 0.7em 0 0;
    color: #333;
}

input[type="number"] {
    width: 4.5em;
    text-align: right;
    padding: 6px 8px;
    border: 1px solid #b0b8c1;
    border-radius: 6px;
    background: #f9fafb;
    font-size: 1em;
    transition: border 0.2s;
}

input[type="number"]:focus {
    border: 1.5px solid #1976d2;
    outline: none;
    background: #fff;
}

button {
    padding: 7px 18px;
    margin: 0 0.2em;
    border: none;
    border-radius: 6px;
    background: #1976d2;
    color: #fff;
    font-size: 1em;
    font-weight: 500;
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(25, 118, 210, 0.07);
    transition: background 0.2s, box-shadow 0.2s;
}

button[type="reset"] {
    background: #b0b8c1;
}

button[type="button"] {
    background: #43a047;
}

button:hover,
button:focus {
    background: #1565c0;
    box-shadow: 0 4px 16px rgba(25, 118, 210, 0.13);
}

button[type="reset"]:hover,
button[type="reset"]:focus {
    background: #8a929a;
}

button[type="button"]:hover,
button[type="button"]:focus {
    background: #388e3c;
}

textarea {
    font-family: inherit;
    padding: 12px;
    max-width: 100%;
    width: 100%;
    line-height: 1.5;
    border-radius: 8px;
    border: 1.5px solid #b0b8c1;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
    background: #f9fafb;
    font-size: 1em;
    margin: 0.5em 2rem;
    transition: border 0.2s;
}

textarea:focus {
    border: 1.5px solid #1976d2;
    background: #fff;
    outline: none;
}

textarea#output {
    resize: none;
}

#character-count {
    color: #1976d2;
    font-weight: 500;
    margin-right: 0.5em;
}

details {
    margin-top: 1em;
    background: #f4f6fa;
    border-radius: 8px;
    padding: 0.7em 1em;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.04);
}

summary {
    font-weight: 600;
    cursor: pointer;
    color: #1976d2;
    outline: none;
}

table {
    border-collapse: separate;
    border-spacing: 2px;
    margin: 0.7em auto 0 auto;
    background: #fff;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.04);
    border-radius: 8px;
    overflow: hidden;
}

td {
    width: 2em;
    height: 2em;
    border: 1px solid #b0b8c1;
    text-align: center;
    font-size: 1.1em;
    background: #f9fafb;
    border-radius: 4px;
}

a {
    color: #1976d2;
    text-decoration: none;
    transition: text-decoration 0.2s;
}

a:hover {
    text-decoration: underline;
}

.input-group {
    display: flex;
    gap: 1.2em;
    justify-content: center;
    align-items: flex-end;
    margin-bottom: 0.5em;
    flex-wrap: wrap;
}

.input-group label {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    font-size: 1em;
    color: #333;
    gap: 0.2em;
    font-weight: 500;
}

.input-group input[type="number"] {
    width: 5em;
    padding: 7px 10px;
    border-radius: 6px;
    border: 1.5px solid #b0b8c1;
    background: #f9fafb;
    font-size: 1em;
    margin-top: 0.2em;
    box-sizing: border-box;
}

.button-group {
    display: flex;
    gap: 0.7em;
    justify-content: center;
    margin-bottom: 0.5em;
    flex-wrap: wrap;
}

.button-group button {
    min-width: 80px;
    font-size: 1em;
    padding: 8px 0;
}

.preview-label {
    font-weight: bold;
    font-size: 1.08em;
    margin-top: 1.2em;
    margin-bottom: 0.2em;
    color: #1976d2;
    letter-spacing: 0.03em;
}

#output-markdown.output-markdown {
    font-family: 'Noto Sans Mono', 'Consolas', 'Menlo', 'monospace';
    padding: 16px 14px;
    max-width: 100%;
    width: 100%;
    line-height: 1.7;
    border-radius: 12px;
    border: 1.5px solid #5865f2;
    box-shadow: 0 2px 12px rgba(88, 101, 242, 0.07);
    background: #f5f6fa;
    font-size: 1.08em;
    margin: 0.2em 2rem;
    min-height: 7em;
    word-break: break-all;
    white-space: pre-line;
    overflow-x: auto;
    transition: box-shadow 0.2s, border 0.2s;
}

#output-markdown.output-markdown:focus-within,
#output-markdown.output-markdown:active {
    box-shadow: 0 4px 24px rgba(88, 101, 242, 0.13);
    border: 1.5px solid #4752c4;
}

#output-markdown strong {
    font-weight: bold;
    color: #222;
}

#output-markdown em {
    font-style: italic;
    color: #444;
}

#output-markdown del {
    text-decoration: line-through;
    color: #888;
}

#output-markdown code {
    background: #e3e7ef;
    border-radius: 4px;
    padding: 1px 4px;
    font-size: 0.97em;
    font-family: 'Noto Sans Mono', 'Consolas', monospace;
    color: #1976d2;
}

#output-markdown blockquote {
    border-left: 3px solid #1976d2;
    margin: 0.3em 0 0.3em 0.5em;
    padding-left: 0.7em;
    color: #555;
    background: #f0f4fa;
    border-radius: 4px;
    font-size: 0.98em;
}

#output-markdown ::selection {
    background: #b3b8f7;
    color: #222;
}

.spoiler {
    background: #b0b8c1;
    color: transparent;
    border-radius: 4px;
    padding: 0 0.3em;
    cursor: pointer;
    transition: color 0.2s, background 0.2s;
    user-select: none;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
    text-shadow: none;
}

.spoiler:hover {
    background: #a0a8b1;
}

.spoiler.revealed {
    color: #222;
    background: #e3e7ef;
    user-select: text;
    transition: color 0.2s, background 0.2s;
    animation: spoiler-reveal 0.25s cubic-bezier(.4, 2, .6, 1) 1;
}

@keyframes spoiler-reveal {
    from {
        filter: blur(2px);
        opacity: 0.2;
    }

    to {
        filter: blur(0);
        opacity: 1;
    }
}

@media screen and (max-width: 600px) {
    body {
        align-items: stretch;
    }

    main {
        max-width: 98vw;
        padding: 12px 2vw 16px 2vw;
    }

    textarea {
        font-size: 0.97em;
    }

    table {
        font-size: 0.95em;
    }

    .input-group,
    .button-group {
        flex-direction: column;
        align-items: stretch;
        gap: 0.5em;
    }

    .input-group label {
        width: 100%;
    }

    .button-group button {
        width: 100%;
        min-width: unset;
    }

    #output-markdown.output-markdown {
        font-size: 0.97em;
        padding: 10px 4px;
    }

    .preview-label {
        font-size: 1em;
    }
}

#output-markdown .emoji {
    font-family: 'Noto Color Emoji', 'Apple Color Emoji', 'Segoe UI Emoji', sans-serif;
    font-size: 1.15em;
    vertical-align: middle;
}