/* Modern mobile-friendly layout for the newsreader app */
:root {
    --bg: #f1f4fb;
    --bg-soft: #e5edff;
    --panel: #ffffff;
    --border: #d6dcec;
    --text: #1b2636;
    --text-muted: #4f5b6c;
    --accent: #006dff;
    --accent-strong: #0052c3;
    --accent-soft: rgba(0, 109, 255, 0.12);
    --accent-soft-strong: rgba(0, 82, 195, 0.16);
    --danger: #ff4f5a;
    --danger-soft: rgba(255, 79, 90, 0.15);
    --success: #1fbf8f;
    --success-soft: rgba(31, 191, 143, 0.15);
    --shadow: 0 18px 40px rgba(11, 27, 77, 0.12);
}

html,
body {
    height: 100%;
}

body {
    margin: 0;
    padding: 0;
    font-family: "Inter", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
    background: radial-gradient(circle at top, var(--bg-soft), var(--bg));
    color: var(--text);
    -webkit-font-smoothing: antialiased;
}

a {
    color: var(--accent);
    text-decoration: none;
}

a:hover,
a:focus {
    text-decoration: underline;
}

.container-fluid {
    width: 100%;
    max-width: none;
    padding: 0;
}

.matrix-shell {
    position: relative;
    padding: 0 0 3.5rem;
    width: 100%;
    margin: 0;
}

.container-fluid.px-4.matrix-shell {
    padding-left: 0 !important;
    padding-right: 0 !important;
}

@media (min-width: 1200px) {
    .matrix-shell {
        padding: 1.75rem 2rem 3.5rem;
    }
}

@media (max-width: 640px) {
    .matrix-shell {
        padding: 1.1rem 0.75rem 2.5rem;
    }
}

.matrix-container {
    background-color: var(--panel);
    border: 1px solid var(--border);
    border-radius: 24px;
    padding: 1.75rem 1.5rem;
    box-shadow: var(--shadow);
    width: 100%;
    max-width: none;
    margin: 0 auto;
    box-sizing: border-box;
    min-width: 0;
}

.matrix-container > * {
    margin: 0;
}

.matrix-container .row,
.matrix-container .d-flex {
    padding: 0;
}

.matrix-container .card-body,
.matrix-container .matrix-filters,
.matrix-container .article-card {
    padding-left: 0;
    padding-right: 0;
}

@media (max-width: 768px) {
    .matrix-container {
        padding: 1.5rem;
        border-radius: 18px;
    }
}

@media (max-width: 520px) {
    .matrix-container {
        padding: 1.25rem;
        border-radius: 16px;
    }
}

/* Sticky navigation bar */
.matrix-nav {
    background-color: rgba(255, 255, 255, 0.95);
    border: 1px solid var(--border);
    border-radius: 18px;
    box-shadow: 0 14px 36px rgba(9, 22, 61, 0.08);
    padding: 0.75rem 1.25rem;
    margin-bottom: 1.2rem;
    position: sticky;
    top: 0.75rem;
    z-index: 1050;
    backdrop-filter: blur(18px);
}

.matrix-nav .navbar-toggler {
    border-color: rgba(27, 38, 54, 0.2);
}

.matrix-nav .navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(27,38,54,0.85)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

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

@media (min-width: 992px) {
    .nav-flex {
        flex-direction: row;
        align-items: flex-start;
    }
}

.nav-collapse-body {
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.nav-profile {
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border);
}

.nav-profile-avatar {
    width: 36px;
    height: 36px;
    border-radius: 12px;
    border: 2px solid var(--accent-soft);
}

.nav-profile-label {
    font-weight: 600;
    color: var(--text);
}

.nav-main-list {
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    padding-left: 0;
}

.nav-menu-actions {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.nav-menu-actions .btn {
    justify-content: flex-start;
}

.nav-menu-actions .swipe-controls {
    width: 100%;
    justify-content: space-between;
    flex-wrap: wrap;
}

.nav-menu-actions .swipe-controls .hidden-count-badge {
    font-size: 0.85rem;
}

.nav-menu-filters {
    width: 100%;
}

.matrix-title {
    font-size: 1.35rem;
    font-weight: 700;
    letter-spacing: 0.02em;
    color: var(--accent-strong);
}

.nav-link,
.navbar-text,
.nav-link-text {
    color: var(--text);
    font-size: 0.95rem;
}

.matrix-nav .nav-link {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.35rem 0.5rem;
    border-radius: 999px;
    transition: background 0.2s ease;
}

.matrix-nav .nav-link:hover,
.matrix-nav .nav-link:focus {
    background-color: var(--accent-soft);
    color: var(--accent-strong);
}

.nav-link-text {
    font-weight: 600;
}

.theme-toggle-wrapper,
.matrix-overlay,
.matrix-code-bg,
.matrix-rain {
    display: none;
}

.nav-avatar {
    width: 32px;
    height: 32px;
    border-radius: 12px;
    object-fit: cover;
    margin-right: 6px;
    border: 2px solid var(--accent-soft);
}

.google-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 22px;
    height: 22px;
    margin-right: 8px;
    border-radius: 50%;
    font-weight: 700;
    font-size: 12px;
    color: #fff;
    background: linear-gradient(135deg, #4285f4 0%, #34a853 50%, #fbbc05 75%, #ea4335 100%);
}

.system-status {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    margin: 0;
    color: var(--text-muted);
}

.system-status-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.22rem 0.9rem;
    border-radius: 999px;
    font-size: 0.82rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    background-color: rgba(0, 0, 0, 0.05);
}

.system-status-pill.is-online {
    background-color: var(--success-soft);
    color: var(--success);
}

.system-status-pill.is-offline {
    background-color: var(--danger-soft);
    color: var(--danger);
}

.system-status-detail {
    font-size: 0.8rem;
}

/* Filters */
.matrix-filters {
    border: 1px solid var(--border);
    border-radius: 20px;
    background-color: rgba(255, 255, 255, 0.92);
    padding: 1.4rem 1.6rem;
    box-shadow: var(--shadow);
}

@media (max-width: 640px) {
    .matrix-filters {
        padding: 1rem 1.1rem;
        border-radius: 18px;
    }
}

.quick-filter-group {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.quick-filter-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: 0.35rem 0.9rem;
    font-size: 0.85rem;
    color: var(--text-muted);
    background-color: rgba(0, 0, 0, 0.03);
    transition: background 0.2s ease, color 0.2s ease, border 0.2s ease;
}

.quick-filter-btn.is-active {
    border-color: var(--accent-strong);
    color: #fff;
    background: linear-gradient(120deg, var(--accent), var(--accent-strong));
    box-shadow: 0 8px 16px rgba(0, 82, 195, 0.25);
}

.swipe-controls .btn,
.swipe-controls .badge {
    white-space: nowrap;
}

.hidden-count-badge {
    font-size: 0.85rem;
    border-radius: 999px;
    background-color: var(--accent-soft);
    color: var(--accent-strong);
}

/* Article list */
.article-card {
    border: 1px solid transparent;
    border-radius: 20px;
    background: linear-gradient(150deg, rgba(255, 255, 255, 0.97), rgba(232, 240, 255, 0.95));
    transition: transform 0.25s ease, opacity 0.2s ease, box-shadow 0.25s ease;
    touch-action: pan-y;
    position: relative;
    overflow: hidden;
    box-shadow: 0 8px 24px rgba(18, 34, 70, 0.12);
    width: calc(100% + 4px);
    max-width: none;
    margin-left: -2px;
    margin-right: -2px;
    min-width: 0;
    border: 1px solid rgba(20, 28, 52, 0.15);
}

.article-swipe-popup {
    position: fixed;
    display: none;
    flex-direction: column;
    gap: 0.35rem;
    padding: 0.35rem 0.75rem;
    background-color: var(--panel);
    border-radius: 14px;
    border: 1px solid var(--border);
    box-shadow: 0 6px 18px rgba(13, 31, 68, 0.25);
    z-index: 1200;
    width: min(320px, 90vw);
    right: auto;
    bottom: auto;
}

.article-swipe-popup.visible {
    display: flex;
}

.article-swipe-popup .btn {
    font-size: 0.7rem;
    padding: 0.25rem 0.75rem;
    min-width: 0;
    width: auto;
}

.article-card:hover:not(.article-card-swiping) {
    transform: translateY(-4px);
    box-shadow: 0 16px 28px rgba(13, 31, 68, 0.2);
}

.article-card .card-body {
    padding: 1.5rem 1.75rem;
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

@media (max-width: 600px) {
    .article-card .card-body {
        padding: 1rem 1.1rem;
    }
}

.article-header {
    display: flex;
    gap: 1rem;
}

@media (max-width: 768px) {
    .article-header {
        flex-direction: column;
    }
}

.article-title-link {
    font-size: 1.15rem;
    font-weight: 600;
    display: inline-block;
    color: var(--text);
}

.article-preview {
    margin-top: 0.35rem;
    font-size: 0.95rem;
    color: var(--text-muted);
    line-height: 1.4;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, 1) 60%, rgba(0, 0, 0, 0) 100%);
    mask-image: linear-gradient(180deg, rgba(0, 0, 0, 1) 60%, rgba(0, 0, 0, 0) 100%);
}

.article-preview-wrapper {
    position: relative;
}

.article-full-summary {
    display: none;
    padding-top: 0.5rem;
    border-top: 1px solid var(--border);
    margin-top: 0.35rem;
}

.article-preview-wrapper.expanded .article-preview {
    display: none;
}

.article-preview-wrapper.expanded .article-full-summary {
    display: block;
}

.article-suggested-words {
    border-top: 1px dashed rgba(0, 0, 0, 0.08);
    padding-top: 0.75rem;
}

.suggested-word-buttons .btn {
    text-align: left;
}

.article-meta-inline {
    display: flex;
    flex-wrap: wrap;
    gap: 0.25rem;
    margin-bottom: 0.35rem;
    font-size: 0.65rem;
    letter-spacing: 1.0px;
    text-transform: uppercase;
    color: rgba(79, 91, 108, 0.85);
    min-height: 1.1rem;
}

.article-meta-inline__item {
    font-weight: 500;
    color: rgba(27, 38, 54, 0.65);
}

.article-meta-inline__divider {
    opacity: 0.5;
}

.article-meta-actions {
    background: transparent;
    border: none;
    padding: 0;
    gap: 0.5rem;
    display: flex;
    align-items: center;
}

.article-meta-actions .btn {
    white-space: nowrap;
}

.article-meta-delete-form {
    margin: 0;
}

.article-original-link {
    color: var(--accent);
}

.article-original-link-icon {
    padding: 0.35rem;
    width: 2.6rem;
    height: 2.6rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.article-original-link-icon .bi {
    font-size: 1.1rem;
}

.article-body {
    padding: 1rem 1.4rem;
    border-top: 1px solid var(--border);
    background-color: var(--panel);
    color: var(--text);
}

.article-card.article-card-swiping {
    transition: none;
}

.article-card.article-card-hidden {
    opacity: 0;
    pointer-events: none;
}

.article-card.article-card-left,
.article-card.article-card-right {
    background: linear-gradient(150deg, rgba(255, 255, 255, 0.97), rgba(232, 240, 255, 0.95));
}

.swipe-zone {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 12px;
    pointer-events: none;
    opacity: 1;
    z-index: 0;
}

.swipe-zone-left {
    left: 0;
    width: 0;
    background: none;
}

.swipe-zone-right {
    right: 0;
    width: 0;
    background: none;
}

.swipe-guide {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    color: var(--text-muted);
    margin: 0.25rem 0 0.75rem;
    padding: 0.65rem 1rem;
    border-radius: 999px;
    background-color: rgba(255, 255, 255, 0.7);
    border: 1px dashed var(--border);
}

.swipe-arrow {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 1.4rem;
    height: 1.4rem;
    border-radius: 50%;
    background-color: rgba(255, 79, 90, 0.15);
    color: var(--danger);
    font-weight: 600;
    font-size: 1rem;
}

.swipe-arrow-right {
    background-color: rgba(31, 191, 143, 0.2);
    color: var(--success);
}

.alert {
    border-radius: 12px;
    border: none;
    box-shadow: var(--shadow);
}

.btn {
    border-radius: 999px;
    font-weight: 600;
    letter-spacing: 0.01em;
    padding-inline: 1.25rem;
    transition: transform 0.15s ease, box-shadow 0.2s ease;
}

.btn:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

.btn-sm {
    padding-inline: 0.75rem;
}

.btn-primary {
    background: linear-gradient(120deg, var(--accent), var(--accent-strong));
    border: none;
    box-shadow: 0 10px 22px rgba(0, 82, 195, 0.25);
}

.btn-primary:hover,
.btn-primary:focus {
    background: linear-gradient(120deg, var(--accent-strong), var(--accent));
    transform: translateY(-1px);
}

.btn-outline-secondary {
    border-color: var(--border);
    color: var(--text);
    background-color: rgba(0, 0, 0, 0.02);
}

.btn-outline-secondary:hover,
.btn-outline-secondary:focus {
    background-color: rgba(0, 0, 0, 0.07);
    color: var(--text);
}

.btn-outline-danger {
    color: var(--danger);
    border-color: transparent;
    box-shadow: inset 0 0 0 1px var(--danger);
}

.btn-outline-danger:hover,
.btn-outline-danger:focus {
    color: #fff;
    background-color: var(--danger);
    box-shadow: 0 8px 16px rgba(255, 79, 90, 0.35);
}

.btn-outline-primary {
    border-color: var(--accent);
    color: var(--accent-strong);
    background-color: rgba(0, 109, 255, 0.05);
}

.btn-outline-primary:hover,
.btn-outline-primary:focus {
    color: #fff;
    background-color: var(--accent);
    box-shadow: 0 8px 16px rgba(0, 82, 195, 0.25);
}

.btn-danger {
    background: linear-gradient(120deg, var(--danger), #d62839);
    border: none;
    box-shadow: 0 10px 22px rgba(255, 79, 90, 0.35);
    color: #fff;
}

.btn-danger:hover,
.btn-danger:focus {
    background: linear-gradient(120deg, #d62839, var(--danger));
}

.btn-warning {
    background: linear-gradient(120deg, #ffb347, #ff8c42);
    border: none;
    color: #1b1b1b;
    box-shadow: 0 8px 18px rgba(255, 140, 66, 0.35);
}

.btn-warning:hover,
.btn-warning:focus {
    color: #1b1b1b;
    background: linear-gradient(120deg, #ff8c42, #ffb347);
}

.btn-link {
    color: var(--accent-strong);
    font-weight: 600;
    padding-inline: 0;
    box-shadow: none;
}

.btn-link:hover,
.btn-link:focus {
    color: var(--accent);
}

.matrix-form-panel {
    background-color: var(--panel);
    border: 1px solid var(--border);
    border-radius: 24px;
    padding: 2rem;
    box-shadow: var(--shadow);
}

.matrix-form-panel-wide {
    max-width: 780px;
}

.matrix-footer {
    margin-top: 2rem;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* Heatmap layout */
#map {
    height: 540px;
    width: 100%;
    border-radius: 18px;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    background: #e9f2fb;
}

@media (max-width: 768px) {
    #map {
        height: 420px;
        border-radius: 14px;
    }
}

.matrix-heatmap-sidebar {
    position: fixed;
    top: 110px;
    right: max(4vw, 32px);
    width: min(360px, 90vw);
    max-height: calc(100vh - 150px);
    overflow-y: auto;
    background: var(--panel);
    border-radius: 20px;
    padding: 1.25rem;
    border: 1px solid var(--border);
    box-shadow: 0 24px 60px rgba(16, 34, 63, 0.18);
    display: none;
    z-index: 2000;
}

.matrix-heatmap-sidebar h5 {
    font-size: 1.05rem;
    margin-bottom: 0.75rem;
}

.matrix-heatmap-sidebar.is-open {
    display: block;
}

.matrix-heatmap-link {
    color: var(--accent);
    font-weight: 500;
}

.matrix-heatmap-link:hover,
.matrix-heatmap-link:focus {
    text-decoration: underline;
}

@media (max-width: 768px) {
    .matrix-heatmap-sidebar {
        position: fixed;
        inset: auto 16px 16px 16px;
        max-height: 60vh;
        width: auto;
    }
}

.matrix-weight-star {
    font-size: 1.2rem;
    transition: color 0.2s ease;
    color: var(--accent);
}

.matrix-weight-negative-strong {
    color: #8b1c2b;
}

.matrix-weight-negative {
    color: #c2404b;
}

.matrix-weight-neutral {
    color: #6c757d;
}

.matrix-weight-positive-light {
    color: #2f9e44;
}

.matrix-weight-positive-mid {
    color: #1b7f6b;
}

.matrix-weight-positive-strong {
    color: #0b7285;
}

.score-words-table {
    width: 100%;
    table-layout: auto;
}

.score-word-term {
    min-width: 180px;
}

.score-word-text {
    font-weight: 600;
    color: var(--text);
    word-break: break-word;
}

.score-word-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-top: 0.4rem;
}

@media (max-width: 768px) {
    .score-words-table th,
    .score-words-table td {
        white-space: normal;
    }

    .score-word-term {
        display: block;
    }

    .score-word-actions {
        width: 100%;
    }
}