body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: #f4f4f9;
    color: #333;
    max-width: 800px;
    margin: 24px auto;
    padding: 20px;
    box-sizing: border-box;
    overflow-x: hidden;
    touch-action: manipulation;
}

button,
input[type="submit"],
input[type="button"],
input[type="reset"],
.primary-button,
.lbox-button,
.admin-toggle,
.vk-toggle,
.vk-delete,
.vk-key,
.recent-button {
    -webkit-user-select: none;
    user-select: none;
    -webkit-touch-callout: none;
}

h1 {
    color: #1b5f8a;
    text-align: center;
    font-size: 1.6rem;
    margin: 6px 0 6px;
}

.search-form {
    display: flex;
    gap: 6px;
    margin-bottom: 24px;
    align-items: center;
    flex-wrap: nowrap;
}

.search-form input[type="text"] {
    flex-grow: 1;
    min-width: 0;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 16px;
}

.search-form input[type="submit"] {
    padding: 12px 20px;
    border: none;
    background-color: #007bff;
    color: white;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
}

.search-form input[type="submit"]:hover {
    background-color: #0056b3;
}

.vk-toggle {
    padding: 12px 14px;
    border: 1px solid #d3d3d3;
    border-radius: 4px;
    background-color: #fff;
    color: #1b5f8a;
    cursor: pointer;
    font-size: 0.95rem;
    white-space: nowrap;
}

.vk-toggle.is-active {
    background-color: #1b5f8a;
    border-color: #1b5f8a;
    color: #fff;
}

.vk-delete {
    display: none;
    padding: 12px 14px;
    border: 1px solid #d3d3d3;
    border-radius: 4px;
    background-color: #fff;
    color: #b00020;
    cursor: pointer;
    font-size: 0.95rem;
    white-space: nowrap;
}

body.vk-enabled .vk-delete {
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

body.vk-enabled #query {
    caret-color: transparent;
}

body.vk-enabled #query:focus {
    outline: none;
}

.virtual-keyboard {
    display: none;
    margin-bottom: 14px;
    padding: 8px;
    border: 1px solid #e1e1e1;
    border-radius: 10px;
    background-color: #fff;
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.04);
    gap: 6px;
    align-items: flex-start;
    overflow-x: hidden;
    -webkit-overflow-scrolling: touch;
    width: 100%;
    box-sizing: border-box;
}

.virtual-keyboard.is-active {
    display: flex;
    flex-direction: column;
}

.vk-row {
    display: grid;
    grid-template-columns: minmax(0, 5fr) minmax(0, 3fr);
    gap: 8px;
    margin-bottom: 6px;
    align-items: center;
    width: 100%;
    min-width: 0;
}

.vk-row:last-child {
    margin-bottom: 0;
}

.vk-consonants,
.vk-numbers {
    display: flex;
    gap: 4px;
    min-width: 0;
    align-items: center;
}

.vk-consonants {
    justify-content: flex-start;
}

.vk-numbers {
    justify-content: flex-end;
}

.vk-offset-1 {
    padding-left: clamp(4px, 2vw, 12px);
}

.vk-offset-2 {
    padding-left: clamp(8px, 3.5vw, 20px);
}

.vk-key {
    flex: 1 1 0;
    min-width: 0;
    min-height: 50px;
    padding: 8px 4px;
    border: 1px solid #d8d8e0;
    border-radius: 6px;
    background-color: #f8f8fc;
    color: #222;
    font-size: clamp(0.86rem, 3.2vw, 1.1rem);
    line-height: 1;
    text-align: center;
    cursor: pointer;
    user-select: none;
    box-sizing: border-box;
}

.vk-key.vk-num {
    background-color: #eef4ff;
    border-color: #cddaf2;
    color: #1b3d5a;
}

.vk-key.vk-accent {
    background-color: #fff1f1;
    border-color: #f2c9c9;
    color: #7a1b1b;
}

.vk-key:hover {
    border-color: #b7c9f0;
    background-color: #eef3ff;
}

.vk-key.vk-accent:hover {
    border-color: #e6a9a9;
    background-color: #ffe6e6;
}

.vk-key.is-active {
    background-color: #1b5f8a;
    border-color: #1b5f8a;
    color: #fff;
}

.vk-key.vk-wide {
    min-width: 88px;
}

.vk-key.vk-space {
    flex: 1 1 auto;
    min-width: 160px;
}

.result-item {
    background-color: #fff;
    border: 1px solid #e9e9e9;
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 20px;
}

.result-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
}

.page-info {
    font-size: 1.5rem;
    font-weight: bold;
    color: #0056b3;
    margin: 0;
}

.case-title {
    font-size: 1.1rem;
    color: #000;
    margin: 0 0 10px 0;
}

.supported-books {
    text-align: center;
    margin-bottom: 20px;
    color: #555;
    font-size: 0.9rem;
}

.no-results {
    text-align: center;
    color: #888;
    padding: 20px;
    white-space: pre-wrap;
}

.loading-indicator {
    display: none;
    text-align: center;
    padding: 20px;
    font-size: 1.2rem;
    color: #007bff;
}

.lbox-button {
    display: inline-block;
    padding: 8px 15px;
    background-color: #28a745;
    color: white;
    text-decoration: none;
    border-radius: 5px;
    font-size: 0.9rem;
    margin-top: 0;
}

.lbox-button:hover {
    background-color: #218838;
}

.primary-button {
    display: inline-block;
    padding: 10px 16px;
    background-color: #007bff;
    color: white;
    text-decoration: none;
    border-radius: 5px;
    font-size: 0.9rem;
}

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

.book-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
    margin-bottom: 30px;
}

.book-card {
    background-color: #fff;
    border: 1px solid #e9e9e9;
    border-radius: 8px;
    padding: 18px;
    text-align: center;
}

.book-card .book-name {
    font-size: 1rem;
    color: #000;
    margin: 0 0 12px;
    line-height: 1.4;
}

.book-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 8px;
}

.book-title {
    text-align: left;
    font-size: 1.2rem;
    font-weight: 600;
    color: #111;
    margin: 0;
    min-width: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.book-actions {
    text-align: right;
    margin: 0;
    flex-shrink: 0;
}

.footer {
    text-align: center;
    font-size: 0.8rem;
    color: #777;
    margin-top: 30px;
}

.admin-entry {
    text-align: center;
    margin-top: 6px;
}

.admin-toggle {
    border: none;
    background: none;
    color: #9aa0a6;
    font-size: 0.75rem;
    cursor: pointer;
    padding: 4px 6px;
}

.admin-toggle:hover {
    color: #6b6f76;
    text-decoration: underline;
}

.recent-searches {
    margin: 0 0 20px;
}

.recent-title {
    font-size: 0.85rem;
    color: #666;
    margin: 0 0 8px;
    text-align: center;
}

.recent-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: center;
}

.recent-button {
    border: 1px solid #d6d6d6;
    background-color: #fff;
    color: #444;
    padding: 6px 10px;
    border-radius: 16px;
    font-size: 0.85rem;
    cursor: pointer;
}

.recent-button:hover {
    border-color: #007bff;
    color: #007bff;
}

.highlight {
    background-color: #ffe08a;
    padding: 0 2px;
    border-radius: 3px;
}

.load-more {
    display: flex;
    justify-content: center;
    margin: 10px 0 20px;
}

@media (max-width: 600px) {
    body {
        margin: 12px auto;
        padding: 16px;
    }

    .search-form {
        gap: 4px;
    }

    .search-form input[type="text"] {
        padding: 10px;
        font-size: 0.95rem;
    }

    .search-form input[type="submit"] {
        padding: 9px 8px;
        font-size: 0.85rem;
    }

    .vk-toggle {
        padding: 9px 8px;
        font-size: 0.82rem;
    }

    .vk-delete {
        padding: 9px 8px;
        font-size: 0.82rem;
    }

    .vk-row {
        gap: 6px;
    }

    .vk-key {
        min-width: 0;
        min-height: 46px;
        padding: 6px 2px;
        font-size: 0.9rem;
    }

    .vk-offset-1 {
        padding-left: clamp(2px, 1.5vw, 8px);
    }

    .vk-offset-2 {
        padding-left: clamp(4px, 3vw, 14px);
    }

    .virtual-keyboard {
        padding: 6px;
    }
}

@media (max-width: 360px) {
    .vk-row {
        gap: 4px;
    }

    .vk-key {
        min-height: 44px;
        padding: 5px 2px;
        font-size: 0.84rem;
    }

    .virtual-keyboard {
        padding: 4px;
    }
}