body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    display: flex;
    flex-direction: column;
    align-items: center;
    min-height: 100vh;
    margin: 0;
    background-color: #bebebe;
}

main {
    flex-grow: 1;
    padding: 20px;
    width: 100%;
    max-width: 1200px;
}

footer {
    padding: 20px;
    font-size: 0.9em;
    color: #777;
}

h1 {
    color: #2c3e50;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    font-size: 2.5em;
    font-weight: 600;
    margin-bottom: 30px;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.1);
}

.tool-container {
    background-color: #fff;
    border: 1px solid #ddd;
    border-radius: 8px;
    padding: 24px;
    margin-bottom: 20px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

.tool-container h2 {
    margin-top: 0;
    border-bottom: 2px solid #eee;
    padding-bottom: 10px;
}

button {
    background-color: #007bff;
    color: white;
    border: none;
    padding: 10px 15px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 1em;
}

button:hover {
    background-color: #0056b3;
}

pre {
    background-color: #282c34;
    color: #abb2bf;
    padding: 15px;
    border-radius: 5px;
    overflow-x: auto;
    white-space: pre-wrap;
    word-wrap: break-word;
}

.accordion-btn {
    background-color: #007bff;
    color: white;
    cursor: pointer;
    padding: 14px 20px;
    width: 100%;
    border: none;
    text-align: left;
    outline: none;
    font-size: 1.1em;
    transition: 0.4s;
    border-radius: 5px;
    margin-top: 10px;
    font-weight: 600;
}

.accordion-btn:hover,
.accordion-btn.active {
    background-color: #0056b3;
}

.panel {
    padding: 0 18px;
    background-color: white;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.2s ease-out;
    border: 1px solid #ddd;
    border-top: none;
    border-radius: 0 0 5px 5px;
}

.tool-form {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 20px;
    align-items: center;
}


.tool-form input[type="text"],
.tool-form input[type="number"] {
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 5px;
    font-size: 1em;
    background-color: white;
    min-width: 120px;
    flex: 1;
}

.paste-options select#paste-ttl,
#subnet-mask {
    padding: 10px;
    padding-right: 30px;
    border: 1px solid #ccc;
    border-radius: 5px;
    font-size: 1em;
    background-color: white;
    min-width: 120px;

    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath fill='none' stroke='%23333' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M2 5l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 10px center;
    background-size: 1em;
    flex: initial;
}

.tool-form input[type="text"],
.tool-form input[type="number"] {
    flex: 1;
}


.tool-form button {
    flex-shrink: 0;
}

.tool-form button:hover {
    background-color: #0056b3;
}

.dns-type-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 15px;
    margin-bottom: 10px;
}

.dns-type-btn {
    background-color: #f8f9fa;
    color: #343a40;
    border: 1px solid #ced4da;
    padding: 8px 14px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 0.9em;
    font-weight: 500;
    transition: background-color 0.2s, border-color 0.2s;
}

.dns-type-btn:hover {
    background-color: #e9ecef;
    border-color: #adb5bd;
}

#paste-content {
    width: 100%;
    min-height: 150px;
    box-sizing: border-box;
    font-family: monospace;
    font-size: 0.9em;
    border: 1px solid #ccc;
    border-radius: 5px;
    padding: 10px;
}

.paste-options {
    display: flex;
    gap: 15px;
    align-items: baseline;
    margin-top: 10px;
}

.paste-options label {
    font-weight: 500;
}

.ip-container {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
}

.ip-column {
    flex: 1;
    min-width: 250px;
    display: flex;
    flex-direction: column;
}

.ip-column pre {
    flex-grow: 1;
}

.info-container {
    margin-top: 20px;
}

pre a {
    color: #9bbff9;
    text-decoration: underline;
}


.grid-wrapper {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

@media (max-width: 900px) {
    .grid-wrapper {
        grid-template-columns: 1fr;
    }
}

#paste-result,
#file-result {
    position: relative;
    padding-right: 170px;
}

.pass-output-container {
    display: flex;
    gap: 10px;
    margin-bottom: 15px;
}

#pass-output {
    flex-grow: 1;
    font-family: monospace;
    font-size: 1.1em;
    padding: 8px;
    border: 1px solid #ccc;
    border-radius: 5px;
    background-color: #eee;
}

.pass-options {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.pass-option {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9em;
}

.pass-option:first-child {
    grid-column: 1 / -1;
}

.pass-option input[type="range"] {
    flex-grow: 1;
}

.pass-option input[type="checkbox"] {
    transform: scale(1.1);
}

.drop-zone {
    border: 2px dashed #ccc;
    border-radius: 8px;
    padding: 30px;
    text-align: center;
    color: #888;
    font-weight: 500;
    transition: background-color 0.2s, border-color 0.2s;
}

.drop-zone.dragover {
    background-color: #f0f8ff;
    border-color: #007bff;
}

.grid-span-2 {
    grid-column: 1 / -1;
}

#file-upload-btn,
#file-note {
    margin-top: 0;
}

#file-note {
    font-size: 1em;
}

#paste-copy-btn,
#file-copy-btn,
#pass-copy-btn {
    background-color: #555;
    color: white;
    border: 1px solid #777;
    border-radius: 5px;
    cursor: pointer;
    font-size: 0.8em;
    text-align: center;
    width: 140px;
}

#paste-copy-btn:hover,
#file-copy-btn:hover,
#pass-copy-btn:hover {
    background-color: #666;
}

#paste-copy-btn,
#file-copy-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    right: 15px;
    padding: 5px 10px;
}

#pass-copy-btn {
    padding: 8px 10px;
    font-size: 0.9em;
}

.title-container {
    background-color: #fff;
    border: 1px solid #ddd;
    border-radius: 8px;
    padding: 15px 30px;
    margin-bottom: 30px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    display: block;
    margin-left: auto;
    margin-right: auto;
    width: fit-content;
}

.title-container h1 {
    margin: 0;
    border: none;
    padding: 0;
    text-align: center;
    text-shadow: none;
    line-height: normal;
}

.subnet-results {
    margin-top: 15px;
    font-size: 0.9em;
    line-height: 1.6;
}

.subnet-results span {
    font-family: monospace;
    background-color: #eee;
    padding: 2px 4px;
    border-radius: 3px;
}