:root {
    --mk-bg: #f3f7fb;
    --mk-surface: #ffffff;
    --mk-surface-muted: #eef4f8;
    --mk-border: #d7e3ec;
    --mk-text: #173042;
    --mk-text-muted: #5f7484;
    --mk-accent: #0a7cff;
    --mk-accent-dark: #075bb8;
    --mk-success: #1e8f5b;
    --mk-shadow: 0 10px 30px rgba(18, 47, 70, 0.08);
    --mk-radius: 18px;
}

html, body {
    background: var(--mk-bg);
    color: var(--mk-text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

body.mobile-kpart-body {
    padding: 0;
    margin: 0;
}

.mobile-kpart-shell {
    max-width: 760px;
    margin: 0 auto;
    padding: 16px 14px 40px;
}

.mobile-kpart-header {
    position: sticky;
    top: 0;
    z-index: 20;
    background: rgba(243, 247, 251, 0.94);
    backdrop-filter: blur(8px);
    margin: 0 -14px 16px;
    padding: 12px 14px;
    border-bottom: 1px solid rgba(215, 227, 236, 0.9);
}

.mobile-kpart-header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.mobile-kpart-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    min-width: 0;
    text-decoration: none;
    color: var(--mk-text);
}

.mobile-kpart-brand img {
    width: 40px;
    height: 40px;
    object-fit: contain;
    border-radius: 12px;
    background: var(--mk-surface);
    box-shadow: var(--mk-shadow);
}

.mobile-kpart-brand-title {
    font-size: 18px;
    font-weight: 800;
    line-height: 1.1;
}

.mobile-kpart-brand-subtitle {
    font-size: 12px;
    color: var(--mk-text-muted);
    line-height: 1.2;
}

.mobile-kpart-actions {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}

.mobile-kpart-chip {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 38px;
    padding: 0 14px;
    border-radius: 999px;
    border: 1px solid var(--mk-border);
    background: var(--mk-surface);
    color: var(--mk-text);
    font-size: 13px;
    font-weight: 700;
    text-decoration: none;
    white-space: nowrap;
}

.mobile-kpart-chip-primary {
    background: var(--mk-accent);
    color: #fff;
    border-color: var(--mk-accent);
}

.mobile-kpart-breadcrumbs {
    margin: 0 0 16px;
    font-size: 13px;
    color: var(--mk-text-muted);
}

.mobile-kpart-breadcrumbs a {
    color: var(--mk-accent-dark);
}

.mobile-kpart-hero,
.mobile-kpart-panel,
.mobile-kpart-card,
.mobile-kpart-book {
    background: var(--mk-surface);
    border: 1px solid var(--mk-border);
    border-radius: var(--mk-radius);
    box-shadow: var(--mk-shadow);
}

.mobile-kpart-hero {
    padding: 20px;
    margin-bottom: 18px;
    background: linear-gradient(145deg, #ffffff 0%, #eef6ff 100%);
}

.mobile-kpart-hero h1 {
    margin: 0 0 10px;
    font-size: 30px;
    line-height: 1.05;
    font-weight: 800;
}

.mobile-kpart-hero p {
    margin: 0;
    color: var(--mk-text-muted);
    font-size: 15px;
    line-height: 1.55;
}

.mobile-kpart-panel {
    padding: 16px;
    margin-bottom: 16px;
}

.mobile-kpart-panel-title {
    margin: 0 0 12px;
    font-size: 20px;
    font-weight: 800;
}

.mobile-kpart-form textarea,
.mobile-kpart-form input[type="text"] {
    width: 100%;
    border: 1px solid var(--mk-border);
    background: #fff;
    border-radius: 16px;
    padding: 14px 16px;
    font-size: 16px;
    line-height: 1.45;
    color: var(--mk-text);
    box-sizing: border-box;
    box-shadow: none;
}

.mobile-kpart-form textarea {
    min-height: 132px;
    resize: vertical;
}

.mobile-kpart-form-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-top: 12px;
}

.mobile-kpart-btn,
.mobile-kpart-form .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 46px;
    padding: 0 18px;
    border-radius: 14px;
    border: 0;
    font-size: 15px;
    font-weight: 700;
    text-decoration: none;
    box-shadow: none;
}

.mobile-kpart-btn-primary,
.mobile-kpart-form .btn-success,
.mobile-kpart-form .btn-primary {
    background: var(--mk-accent);
    color: #fff;
}

.mobile-kpart-btn-secondary,
.mobile-kpart-form .btn-info {
    background: var(--mk-surface-muted);
    color: var(--mk-text);
    border: 1px solid var(--mk-border);
}

.mobile-kpart-section-heading {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 12px;
    margin: 0 0 12px;
}

.mobile-kpart-section-heading h2,
.mobile-kpart-section-heading h3 {
    margin: 0;
    font-size: 20px;
    font-weight: 800;
}

.mobile-kpart-muted {
    color: var(--mk-text-muted);
    font-size: 13px;
}

.mobile-kpart-results {
    display: grid;
    grid-template-columns: 1fr;
    gap: 14px;
}

.mobile-kpart-card {
    padding: 16px;
}

.mobile-kpart-card-head {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 10px;
}

.mobile-kpart-badge {
    display: inline-flex;
    align-items: center;
    min-height: 28px;
    padding: 0 10px;
    border-radius: 999px;
    background: #e8f2ff;
    color: var(--mk-accent-dark);
    font-size: 12px;
    font-weight: 800;
}

.mobile-kpart-price {
    font-size: 22px;
    line-height: 1;
    font-weight: 800;
    color: var(--mk-success);
    white-space: nowrap;
}

.mobile-kpart-make {
    margin: 0 0 4px;
    font-size: 13px;
    font-weight: 700;
    color: var(--mk-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.mobile-kpart-name {
    margin: 0 0 10px;
    font-size: 18px;
    line-height: 1.3;
    font-weight: 800;
}

.mobile-kpart-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    margin-bottom: 12px;
}

.mobile-kpart-grid-item {
    padding: 10px 12px;
    background: var(--mk-surface-muted);
    border-radius: 14px;
}

.mobile-kpart-grid-label {
    display: block;
    margin-bottom: 4px;
    font-size: 11px;
    font-weight: 700;
    color: var(--mk-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.mobile-kpart-grid-value {
    display: block;
    font-size: 14px;
    line-height: 1.35;
    font-weight: 700;
    word-break: break-word;
}

.mobile-kpart-cart form {
    width: 100% !important;
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
    white-space: normal !important;
}

.mobile-kpart-cart input[type="text"] {
    width: 68px !important;
    height: 42px !important;
    border-radius: 12px;
    border: 1px solid var(--mk-border);
    padding: 8px 10px;
}

.mobile-kpart-cart .btn {
    flex: 1 1 auto;
    min-height: 42px;
    border-radius: 12px;
    font-weight: 800;
}

.mobile-kpart-books {
    display: grid;
    gap: 12px;
}

.mobile-kpart-book {
    overflow: hidden;
}

.mobile-kpart-book summary {
    cursor: pointer;
    list-style: none;
    padding: 16px;
    font-size: 15px;
    font-weight: 800;
}

.mobile-kpart-book summary::-webkit-details-marker {
    display: none;
}

.mobile-kpart-book-content {
    padding: 0 16px 16px;
    border-top: 1px solid var(--mk-border);
}

.mobile-kpart-book-pages {
    margin: 12px 0 0;
    padding: 0;
    list-style: none;
    display: grid;
    gap: 8px;
}

.mobile-kpart-book-pages li {
    padding: 10px 12px;
    border-radius: 12px;
    background: var(--mk-surface-muted);
    font-size: 14px;
    line-height: 1.4;
}

.mobile-kpart-empty {
    text-align: center;
    padding: 28px 18px;
    color: var(--mk-text-muted);
}

.mobile-kpart-footer {
    margin-top: 24px;
    padding-top: 18px;
    color: var(--mk-text-muted);
    font-size: 13px;
    text-align: center;
}

.alert {
    border-radius: 14px;
}

@media (max-width: 640px) {
    .mobile-kpart-header-inner {
        align-items: flex-start;
        flex-direction: column;
    }

    .mobile-kpart-actions {
        width: 100%;
        justify-content: space-between;
    }

    .mobile-kpart-chip {
        flex: 1 1 auto;
    }

    .mobile-kpart-hero h1 {
        font-size: 26px;
    }
}