.pdmc-library {
    --pdmc-primary: #0057b8;
    --pdmc-primary-dark: #004799;
    --pdmc-primary-light: #eaf3ff;
    --pdmc-text: #111111;
    --pdmc-text-soft: #555555;
    --pdmc-text-muted: #7a7a7a;
    --pdmc-white: #ffffff;
    --pdmc-panel-bg: #f7f7f7;
    --pdmc-sidebar-bg: #f1f1f1;
    --pdmc-chip-bg: #ebebeb;
    --pdmc-border: #d7dde5;
    --pdmc-divider: #8ab6e8;
    --pdmc-radius-large: 18px;
    --pdmc-radius-medium: 14px;
    --pdmc-radius-small: 8px;
    --pdmc-radius-pill: 999px;
    --pdmc-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    --pdmc-transition: 0.2s ease;
    --pdmc-max-width: 100%;
    --pdmc-sidebar-width: 260px;
    --pdmc-font-size-xs: 12px;
    --pdmc-font-size-sm: 13px;
    --pdmc-font-size-base: 14px;
    --pdmc-font-size-lg: 18px;
    --pdmc-font-size-xl: 22px;
    --pdmc-space-1: 4px;
    --pdmc-space-2: 8px;
    --pdmc-space-3: 12px;
    --pdmc-space-4: 16px;
    --pdmc-space-5: 20px;
    --pdmc-space-6: 24px;
    --pdmc-space-7: 32px;
    --pdmc-space-8: 40px;
    max-width: var(--pdmc-max-width);
    margin: 0 auto;
    color: var(--pdmc-text);
    font-size: var(--pdmc-font-size-base);
    line-height: 1.45;
}

/* Top bar */
.pdmc-library__topbar {
    display: flex;
    flex-wrap: nowrap;
    align-items: flex-start;
    justify-content: space-between;
    gap: var(--pdmc-space-8);
    background: var(--pdmc-primary);
    padding: var(--pdmc-space-8);
    margin-bottom: var(--pdmc-space-8);
    border-top-left-radius: 2rem;
    border-top-right-radius: 2rem;
}

.pdmc-library__alphabet {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    flex: 1 1 auto;
}

.pdmc-library__alphabet-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    border: 1px solid rgba(255, 255, 255, 0.8);
    border-radius: 50%;
    background: transparent;
    color: var(--pdmc-white);
    font-size: var(--pdmc-font-size-lg);
    font-weight: 700;
    text-decoration: none;
    transition: var(--pdmc-transition);
}

.pdmc-library__alphabet-button:hover,
.pdmc-library__alphabet-button.is-active {
    background: var(--pdmc-white);
    color: var(--pdmc-primary);
}

.pdmc-library__search {
    width: 100%;
    max-width: 280px;
}

.pdmc-library__search-form {
    position: relative;
}

.pdmc-library__search-input {
    width: 100%;
    height: 40px;
    padding: 0 44px 0 14px;
    border: none;
    border-radius: var(--pdmc-radius-pill);
    outline: none;
    font-size: var(--pdmc-font-size-base);
    color: var(--pdmc-text);
    background: var(--pdmc-white);
}

.pdmc-library__search-input::placeholder {
    color: var(--pdmc-text-muted);
}

.pdmc-library__search-button {
    position: absolute;
    top: 50%;
    right: 6px;
    transform: translateY(-50%);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border: none;
    border-radius: 50%;
    background: var(--pdmc-primary);
    color: var(--pdmc-white);
    cursor: pointer;
}

.pdmc-library__search-icon {
    font-size: 10px;
    line-height: 1;
}

/* Intro */
.pdmc-library__intro {
    margin-bottom: var(--pdmc-space-7);
    display: flex;
    justify-content: space-between;
    gap: var(--pdmc-space-5);
}

.pdmc-library__library-title {
    margin: 0 0 var(--pdmc-space-3);
    font-size: var(--pdmc-font-size-xl);
    font-weight: 700;
    color: var(--pdmc-primary);
    line-height: 1.2;
}

.pdmc-library__library-description {
    margin-bottom: var(--pdmc-space-3);
    color: var(--pdmc-text-soft);
}

.pdmc-library__library-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--pdmc-space-3);
    align-items: center;
}

.pdmc-library__library-count {
    display: inline-flex;
    align-items: center;
    min-height: 30px;
    padding: 0 12px;
    border-radius: var(--pdmc-radius-pill);
    background: var(--pdmc-primary-light);
    color: var(--pdmc-primary);
    font-size: var(--pdmc-font-size-xs);
    font-weight: 700;
    white-space: nowrap;
}

/* Main layout */
.pdmc-library__layout {
    display: grid;
    grid-template-columns: var(--pdmc-sidebar-width) 1fr;
    gap: var(--pdmc-space-6);
    align-items: start;
}

/* Sidebar */
.pdmc-library__sidebar {
    background: var(--pdmc-sidebar-bg);
    border-radius: var(--pdmc-radius-medium);
    overflow: hidden;
}

.pdmc-library__sidebar-header {
    background: var(--pdmc-primary);
    color: var(--pdmc-white);
    padding: var(--pdmc-space-5);
    font-size: var(--pdmc-font-size-base);
    font-weight: 700;
}

.pdmc-library__sidebar-body {
    padding: var(--pdmc-space-5);
    display: flex;
    flex-direction: column;
    gap: var(--pdmc-space-3);
}

.pdmc-library__sidebar-list,
.pdmc-library__sidebar-sublist {
    margin: 0;
    padding: 0;
    list-style: none;
}

.pdmc-library__sidebar-item,
.pdmc-library__sidebar-subitem {
    list-style: none;
}

.pdmc-library__sidebar-sublist {
    margin-top: var(--pdmc-space-2);
    padding-left: var(--pdmc-space-4);
    display: flex;
    flex-direction: column;
    gap: var(--pdmc-space-2);
}

.pdmc-library__category-button,
.pdmc-library__sidebar-sublink {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--pdmc-space-3);
    width: 100%;
    min-height: 42px;
    padding: 10px 14px;
    border: none;
    border-radius: var(--pdmc-radius-pill);
    background: var(--pdmc-chip-bg);
    color: var(--pdmc-text);
    text-align: left;
    text-decoration: none;
    transition: var(--pdmc-transition);
    box-sizing: border-box;
}

.pdmc-library__category-button:hover,
.pdmc-library__category-button.is-active,
.pdmc-library__sidebar-sublink:hover,
.pdmc-library__sidebar-sublink.is-active {
    background: var(--pdmc-primary);
    color: var(--pdmc-white);
}

.pdmc-library__category-arrow {
    font-size: 14px;
    line-height: 1;
    flex-shrink: 0;
}

/* Content panel */
.pdmc-library__content {
    background: var(--pdmc-panel-bg);
    border-radius: var(--pdmc-radius-large);
    box-shadow: var(--pdmc-shadow);
    padding: var(--pdmc-space-5);
}

.pdmc-library__content-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--pdmc-space-4);
    margin-bottom: var(--pdmc-space-4);
}

.pdmc-library__content-header-main {
    min-width: 0;
    flex: 1 1 auto;
}

.pdmc-library__content-title {
    margin: 0;
    font-size: var(--pdmc-font-size-lg);
    font-weight: 700;
    color: var(--pdmc-primary);
    line-height: 1.2;
}

.pdmc-library__content-summary {
    color: var(--pdmc-text-soft);
    font-size: var(--pdmc-font-size-sm);
    white-space: nowrap;
    margin-top: var(--pdmc-space-1);
}

/* View toggle */
.pdmc-library__view-toggle {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}

.pdmc-library__view-button {
    width: 32px;
    height: 32px;
    border: 0;
    background: transparent;
    cursor: pointer;
    position: relative;
    border-radius: 4px;
    padding: 0;
}

.pdmc-library__view-button.is-active {
    background: rgba(0, 85, 184, 0.08);
}

#pdmcGridViewBtn::before,
#pdmcListViewBtn::before {
    content: "";
    position: absolute;
    inset: 7px;
}

#pdmcGridViewBtn::before {
    box-shadow:
        0 0 0 2px #bfc7d1 inset,
        8px 0 0 0 #bfc7d1 inset,
        0 8px 0 0 #bfc7d1 inset,
        8px 8px 0 0 #bfc7d1 inset;
}

#pdmcGridViewBtn.is-active::before {
    box-shadow:
        0 0 0 2px #0057b8 inset,
        8px 0 0 0 #0057b8 inset,
        0 8px 0 0 #0057b8 inset,
        8px 8px 0 0 #0057b8 inset;
}

#pdmcListViewBtn::before {
    border-top: 3px solid #bfc7d1;
    border-bottom: 3px solid #bfc7d1;
    box-sizing: border-box;
}

#pdmcListViewBtn::after {
    content: "";
    position: absolute;
    left: 7px;
    right: 7px;
    top: 14px;
    border-top: 3px solid #bfc7d1;
}

#pdmcListViewBtn.is-active::before,
#pdmcListViewBtn.is-active::after {
    border-color: #0057b8;
}

/* Content sections */
.pdmc-library__subcategories {
    border-top: 1px solid var(--pdmc-divider);
    padding-top: 1rem;
}

.pdmc-library__category-group + .pdmc-library__category-group {
    margin-top: var(--pdmc-space-6);
}

.pdmc-library__category-heading {
    margin-bottom: var(--pdmc-space-3);
    font-size: var(--pdmc-font-size-base);
    font-weight: 700;
    color: var(--pdmc-primary);
}

/* Subcategories */
.pdmc-library__subcategory {
    border-bottom: 1px solid var(--pdmc-divider);
}

.pdmc-library__subcategory-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--pdmc-space-4);
    padding: var(--pdmc-space-4) 0;
}

.pdmc-library__subcategory-title {
    font-size: var(--pdmc-font-size-sm);
    font-weight: 700;
    color: var(--pdmc-text);
}

.pdmc-library__subcategory-toggle {
    width: 24px;
    height: 24px;
    border: 0;
    background: var(--pdmc-primary);
    border-radius: 50%;
    cursor: pointer;
    position: relative;
    flex: 0 0 24px;
    padding: 0;
}

.pdmc-library__subcategory-toggle::before,
.pdmc-library__subcategory-toggle::after {
    content: "";
    position: absolute;
    background: var(--pdmc-white);
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
}

.pdmc-library__subcategory-toggle::before {
    width: 12px;
    height: 2px;
}

.pdmc-library__subcategory-toggle::after {
    width: 2px;
    height: 12px;
}

.pdmc-library__subcategory.is-open .pdmc-library__subcategory-toggle::after {
    display: none;
}

.pdmc-library__subcategory-body {
    display: none;
    padding: 0 0 var(--pdmc-space-4);
}

.pdmc-library__subcategory.is-open .pdmc-library__subcategory-body {
    display: block;
}

/* Base document styles */
.pdmc-library__document-list {
    width: 100%;
}

.pdmc-library__document-meta {
    min-width: 0;
}

.pdmc-library__document-code {
    margin-bottom: var(--pdmc-space-1);
    font-size: var(--pdmc-font-size-xs);
    font-weight: 600;
    color: var(--pdmc-text-soft);
}

.pdmc-library__document-title {
    font-size: var(--pdmc-font-size-base);
    font-weight: 700;
    color: var(--pdmc-text);
    word-break: break-word;
    line-height: 1.3;
}

.pdmc-library__document-description {
    margin-top: var(--pdmc-space-2);
    font-size: var(--pdmc-font-size-sm);
    color: var(--pdmc-text-soft);
}

.pdmc-library__document-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-height: 36px;
    padding: 0 14px;
    border-radius: var(--pdmc-radius-pill);
    background: var(--pdmc-primary);
    color: var(--pdmc-white);
    font-size: var(--pdmc-font-size-xs);
    font-weight: 700;
    text-decoration: none;
    white-space: nowrap;
    transition: var(--pdmc-transition);
}

.pdmc-library__document-link:hover {
    background: var(--pdmc-primary-dark);
    color: var(--pdmc-white);
}

.pdmc-library__document-link::after {
    content: "›";
    font-size: 16px;
    line-height: 1;
}

/* GRID VIEW, cards */
#pdmcContent.is-grid-view .pdmc-library__document-list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--pdmc-space-4);
}

#pdmcContent.is-grid-view .pdmc-library__document-row {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: flex-start;
    gap: var(--pdmc-space-4);
    min-height: 170px;
    padding: var(--pdmc-space-5);
    border: 1px solid var(--pdmc-border);
    border-radius: var(--pdmc-radius-medium);
    background: var(--pdmc-white);
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.04);
    box-sizing: border-box;
}

#pdmcContent.is-grid-view .pdmc-library__document-link {
    margin-top: auto;
}

/* LIST VIEW, horizontal rows */
#pdmcContent.is-list-view .pdmc-library__document-list {
    display: block;
}

#pdmcContent.is-list-view .pdmc-library__document-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: var(--pdmc-space-4);
    align-items: center;
    padding: var(--pdmc-space-4) 0;
    border-top: 1px solid var(--pdmc-border);
    background: transparent;
    border-radius: 0;
    min-height: 0;
    box-shadow: none;
}

#pdmcContent.is-list-view .pdmc-library__document-row:first-child {
    border-top: none;
}

#pdmcContent.is-list-view .pdmc-library__document-link {
    justify-self: end;
}

/* Footer */
.pdmc-library__footer {
    margin-top: var(--pdmc-space-6);
}

.pdmc-library__back-button {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    min-height: 36px;
    padding: 0 18px;
    border-radius: var(--pdmc-radius-pill);
    background: var(--pdmc-primary);
    color: var(--pdmc-white);
    font-size: var(--pdmc-font-size-xs);
    font-weight: 700;
    text-decoration: none;
    transition: var(--pdmc-transition);
}

.pdmc-library__back-button:hover {
    background: var(--pdmc-primary-dark);
    color: var(--pdmc-white);
}

.pdmc-library__back-button::before {
    content: "‹";
    font-size: 16px;
    line-height: 1;
}

.pdmc-library__empty {
    padding: var(--pdmc-space-5) 0;
    color: var(--pdmc-text-soft);
    font-size: var(--pdmc-font-size-sm);
}

/* Responsive */
@media (max-width: 1100px) {
    #pdmcContent.is-grid-view .pdmc-library__document-list {
        grid-template-columns: 1fr;
    }
}

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

    .pdmc-library__intro {
        flex-direction: column;
        align-items: flex-start;
    }
}

@media (max-width: 640px) {
    .pdmc-library__topbar {
        flex-direction: column;
        align-items: stretch;
    }

    .pdmc-library__search {
        max-width: 100%;
    }

    .pdmc-library__content-header {
        flex-direction: column;
        align-items: flex-start;
    }

    #pdmcContent.is-list-view .pdmc-library__document-row {
        grid-template-columns: 1fr;
        align-items: start;
    }

    #pdmcContent.is-list-view .pdmc-library__document-link {
        justify-self: start;
    }

    #pdmcContent.is-grid-view .pdmc-library__document-list {
        grid-template-columns: 1fr;
    }
}