:root {
    --bg-color: #f4f6fb;
    --panel-color: #ffffff;
    --accent-color: #2f6fed;
    --accent-light: #e5edff;
    --text-color: #263238;
    --muted-text: #607d8b;
    --border-color: #d9e2ef;
    --shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: 'Segoe UI', 'Hiragino Kaku Gothic ProN', 'Yu Gothic', sans-serif;
    color: var(--text-color);
    background: var(--bg-color);
}

h1, h2, h3 {
    margin: 0 0 0.5rem;
}

p {
    margin: 0;
}

button {
    cursor: pointer;
    border: none;
    border-radius: 8px;
    font-size: 0.95rem;
    transition: transform 0.15s ease, box-shadow 0.2s ease;
}

button:active {
    transform: scale(0.98);
}

.primary-button {
    background: var(--accent-color);
    color: #fff;
    padding: 0.6rem 1.2rem;
    box-shadow: var(--shadow);
}

.secondary-button {
    background: var(--accent-light);
    color: var(--accent-color);
    padding: 0.45rem 1rem;
}

.mobile-menu-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    padding: 0;
    font-size: 1.35rem;
    line-height: 1;
    background: var(--accent-color);
    color: #fff;
    box-shadow: var(--shadow);
}

.mobile-menu-button span {
    pointer-events: none;
}

.ghost-button {
    background: transparent;
    color: var(--accent-color);
    padding: 0.45rem 0.9rem;
}

.app-header {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    padding: 1rem 2.5rem;
    background: var(--panel-color);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 20;
}

.app-header > * {
    flex-shrink: 0;
}

.header-title {
    flex: 1 1 auto;
    margin: 0;
    min-width: 0;
    font-size: 1.8rem;
}

.header-title-link {
    display: inline-block;
    padding: 0.15rem 0;
    color: var(--accent-color);
    text-decoration: none;
    line-height: 1;
    letter-spacing: 0.04em;
    font-weight: 700;
    transition: color 0.2s ease;
    white-space: nowrap;
}

.header-title-link:hover,
.header-title-link:focus-visible {
    color: #1f4fce;
    text-decoration: underline;
}

.header-title-link:focus-visible {
    outline: 3px solid var(--accent-light);
    outline-offset: 3px;
}


#refresh-news {
    margin-left: auto;
}

.icon-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.75rem;
    height: 2.75rem;
    padding: 0;
    background: var(--accent-light);
    color: var(--accent-color);
    border-radius: 12px;
    border: 1px solid rgba(47, 111, 237, 0.25);
    box-shadow: var(--shadow);
    transition: background 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
}

.icon-button svg {
    width: 1.6rem;
    height: 1.6rem;
    fill: none;
    stroke: currentColor;
    stroke-width: 1.8;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.icon-button:hover,
.icon-button:focus-visible {
    background: #fff;
    box-shadow: 0 14px 28px rgba(38, 84, 255, 0.2);
}

.icon-button:focus-visible {
    outline: 3px solid var(--accent-light);
    outline-offset: 3px;
}

.panel-quick-links {
    margin-bottom: 0.5rem;
}

.panel-link {
    display: inline-block;
    color: var(--accent-color);
    font-weight: 600;
    text-decoration: none;
    font-size: 0.95rem;
}

.panel-link:hover,
.panel-link:focus {
    text-decoration: underline;
    outline: none;
}

.app-main {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 1.5rem;
    padding: 1.5rem 2.5rem 2.5rem;
}

.filter-panel {
    background: var(--panel-color);
    border-radius: 18px;
    padding: 1.5rem;
    box-shadow: var(--shadow);
    display: flex;
    flex-direction: column;
    gap: 1.4rem;
}

.filter-close {
    align-self: flex-end;
    background: none;
    color: var(--muted-text);
    font-size: 0.9rem;
    padding: 0;
    display: none;
    font-weight: 600;
}

.filter-close:hover,
.filter-close:focus {
    color: var(--accent-color);
    outline: none;
}

.filter-toggle {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
}

.filter-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.45);
    z-index: 15;
    display: none;
}

.view-list {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}

.view-button {
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 0.5rem 0.9rem;
    text-align: left;
    font-size: 0.95rem;
    color: var(--muted-text);
    transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.view-button:hover,
.view-button:focus {
    outline: none;
    border-color: var(--accent-color);
    color: var(--accent-color);
}

.view-button.active {
    background: var(--accent-color);
    color: #fff;
    border-color: var(--accent-color);
    box-shadow: var(--shadow);
}

.view-empty {
    font-size: 0.9rem;
    color: var(--muted-text);
}

.checkbox-list {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}

.checkbox-list label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.95rem;
    color: var(--muted-text);
}

.checkbox-list input[type="checkbox"] {
    width: 1.1rem;
    height: 1.1rem;
}

.keyword-controls {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.keyword-controls input {
    flex: 1;
    padding: 0.5rem 0.75rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.keyword-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 0.8rem;
}

.keyword-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    background: var(--accent-light);
    color: var(--accent-color);
    padding: 0.4rem 0.8rem;
    border-radius: 999px;
    font-size: 0.85rem;
}

.keyword-tag button {
    background: none;
    border: none;
    color: inherit;
    font-size: 0.9rem;
    padding: 0;
}

.news-area {
    min-height: 70vh;
}

.news-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
    margin-bottom: 1rem;
    color: var(--muted-text);
}

.view-dropdown {
    position: relative;
    display: inline-flex;
    align-items: stretch;
}

.view-dropdown-menu {
    position: absolute;
    top: calc(100% + 0.35rem);
    left: 0;
    min-width: 220px;
    background: var(--panel-color);
    border-radius: 14px;
    box-shadow: var(--shadow);
    padding: 0.4rem 0;
    z-index: 15;
}

.view-dropdown-menu[hidden] {
    display: none;
}

.view-dropdown-item {
    display: block;
    width: 100%;
    padding: 0.6rem 1rem;
    background: transparent;
    border: none;
    text-align: left;
    font-size: 0.95rem;
    color: var(--text-color);
}

.view-dropdown-item:hover,
.view-dropdown-item:focus-visible {
    background: var(--accent-light);
    outline: none;
}

.view-dropdown-item.active {
    color: var(--accent-color);
    font-weight: 600;
}

.view-dropdown-empty {
    padding: 0.6rem 1rem;
    font-size: 0.9rem;
    color: var(--muted-text);
}

.view-dropdown.open .filter-toggle {
    box-shadow: 0 12px 24px rgba(47, 111, 237, 0.12);
}

@media (max-width: 960px) {
    .view-dropdown-menu {
        display: none !important;
    }
}

.news-grid {
    display: flex;
    flex-direction: column;
    gap: 1.4rem;
}

.news-grid.column {
    display: flex;
    flex-direction: column;
    gap: 1.4rem;
}

@media (min-width: 961px) {
    .news-grid.column {
        display: grid;
        grid-template-columns: repeat(3, minmax(0, 1fr));
        gap: 1.4rem;
        align-items: start;
    }
}

.news-section {
    background: var(--panel-color);
    border-radius: 18px;
    box-shadow: var(--shadow);
    padding: 1.3rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.news-section.dragging {
    opacity: 0.6;
    transform: scale(0.98);
}

.section-header {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
}

.section-categories {
    font-size: 1rem;
    font-weight: 600;
}

.section-source {
    color: var(--muted-text);
    font-size: 0.85rem;
}

.article-wrapper {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.article-card {
    padding: 1rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    background: #fff;
    display: flex;
    flex-direction: column;
    gap: 0.65rem;
    transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.article-card:hover {
    box-shadow: var(--shadow);
    transform: translateY(-3px);
}

.article-card.dragging {
    opacity: 0.6;
    transform: scale(0.98);
}

.article-image {
    margin: -1rem -1rem 0;
    border-radius: 12px 12px 0 0;
    overflow: hidden;
    margin-bottom: 0.75rem;
}

.article-image img {
    width: 100%;
    height: auto;
    display: block;
}

.article-title {
    font-size: 1rem;
    font-weight: 600;
    line-height: 1.4;
}

.article-meta {
    display: flex;
    gap: 0.5rem;
    font-size: 0.8rem;
    color: var(--muted-text);
}

.article-description {
    font-size: 0.9rem;
    color: var(--muted-text);
    line-height: 1.6;
}

.article-link {
    align-self: flex-start;
    text-decoration: none;
    color: var(--accent-color);
    font-weight: 600;
}

.news-toolbar #status-text {
    flex: 1 1 auto;
}

.settings-main {
    max-width: 960px;
    margin: 2rem auto;
    padding: 0 1.5rem 3rem;
}

.settings-card {
    background: var(--panel-color);
    border-radius: 20px;
    box-shadow: var(--shadow);
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
}

.settings-actions {
    display: flex;
    gap: 0.75rem;
    justify-content: flex-end;
    flex-wrap: wrap;
}

.view-editor-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
}

.view-editor-actions {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.view-editor {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.view-card {
    background: #f8fafc;
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
}

.view-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.view-card-header h3 {
    margin: 0;
    font-size: 1.2rem;
}

.view-card-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.view-id-label {
    font-size: 0.9rem;
    color: var(--muted-text);
}

.ghost-button.danger {
    color: #e53935;
}

.ghost-button.danger:hover,
.ghost-button.danger:focus {
    color: #b71c1c;
}

.form-grid {
    display: grid;
    gap: 1rem;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.form-grid label {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    font-size: 0.95rem;
    color: var(--muted-text);
}

.form-grid input[type="text"],
.view-field-group textarea {
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 0.6rem 0.75rem;
    font-size: 0.95rem;
    background: #fff;
}

.view-card input[name="view-id"] {
    background: #f1f5f9;
    color: var(--muted-text);
}

.view-field-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.view-field-group h4 {
    margin: 0;
}

.view-field-group p {
    margin: 0;
    font-size: 0.85rem;
    color: var(--muted-text);
}

.checkbox-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 0.6rem;
}

.checkbox-grid label {
    display: flex;
    align-items: center;
    gap: 0.45rem;
    font-size: 0.95rem;
    color: var(--text-color);
}

.checkbox-grid input[type="checkbox"] {
    width: 1.05rem;
    height: 1.05rem;
}

.checkbox-grid .empty-helper,
.empty-helper {
    margin: 0;
    font-size: 0.9rem;
    color: var(--muted-text);
    grid-column: 1 / -1;
}

.view-field-group textarea {
    resize: vertical;
    min-height: 80px;
}

.settings-status {
    font-size: 0.9rem;
    color: var(--muted-text);
}

@media (max-width: 960px) {
    .app-main {
        grid-template-columns: 1fr;
        position: relative;
    }

    .filter-panel {
        position: fixed;
        top: 0;
        left: 0;
        bottom: 0;
        width: min(85vw, 360px);
        max-width: 100%;
        transform: translateX(-100%);
        transition: transform 0.3s ease;
        border-radius: 0;
        padding: 1.5rem 1.25rem 2.5rem;
        overflow-y: auto;
        z-index: 20;
        box-shadow: none;
        pointer-events: none;
    }

    body.filters-open .filter-panel {
        transform: translateX(0);
        box-shadow: var(--shadow);
        pointer-events: auto;
    }

    .filter-backdrop {
        display: none;
    }

    body.filters-open .filter-backdrop {
        display: block;
    }

    .filter-close {
        display: inline-flex;
        align-items: center;
        gap: 0.35rem;
    }

    .filter-toggle {
        display: inline-flex;
    }

    body.filters-open {
        overflow: hidden;
    }
}

@media (max-width: 600px) {
    .app-header {
        gap: 0.85rem;
        padding: 0.85rem 1.5rem;
    }

    .header-title {
        font-size: 1.4rem;
    }

    .header-title-link {
        padding: 0.3rem 0.7rem;
    }

    .icon-button {
        width: 2.2rem;
        height: 2.2rem;
    }

    .icon-button svg {
        width: 1.2rem;
        height: 1.2rem;
    }

    .app-main {
        padding: 1.2rem;
    }

    .view-list {
        flex-direction: row;
        flex-wrap: wrap;
        gap: 0.5rem;
    }

    .view-button {
        flex: 1 1 48%;
        text-align: center;
    }
}