@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700;800;900&display=swap');

:root {
    --bg: #0a0a0a;
    --bg-card: #141414;
    --bg-card-hover: #1a1a1a;
    --border: rgba(255,255,255,0.08);
    --border-hover: rgba(255,255,255,0.14);
    --text: #fafafa;
    --text-secondary: rgba(255,255,255,0.6);
    --text-muted: rgba(255,255,255,0.35);
    --accent: #178D9A;
    --accent-hover: #173A6B;
    --accent-glow: rgba(23,141,154,0.35);
    --accent-soft: rgba(23,141,154,0.1);
    --brand-navy: #173A6B;
    --brand-teal: #178D9A;
    --green: #22c55e;
    --green-glow: rgba(34,197,94,0.3);
    --red: #ef4444;
    --red-soft: rgba(239,68,68,0.1);
    --yellow: #FFEB3B;
    --hl-green: #81C784;
    --hl-blue: #64B5F6;
    --hl-pink: #F06292;
    --radius: 16px;
    --radius-sm: 10px;
    --radius-xs: 8px;
    --t: 0.3s cubic-bezier(0.16, 1, 0.32, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
    font-family: 'Poppins', 'Inter', sans-serif;
    color: var(--text);
    background: var(--bg);

    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

::selection { background: var(--accent); color: #fff; }

/* ===================== NAV ===================== */
.ir-nav {
    position: fixed; top: 0; width: 100%;
    background: rgba(10,10,10,0.8);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border-bottom: 1px solid var(--border);
    z-index: 100; padding: 0 2rem;
}
.ir-nav-inner {
    max-width: 1100px; margin: 0 auto;
    display: flex; align-items: center;
    justify-content: space-between; height: 60px;
    gap: 1rem;
}
.ir-nav-brand {
    display: flex; align-items: center; gap: 10px;
    text-decoration: none; flex-shrink: 0;
}
.ir-nav-brand svg { color: var(--accent); }
.ir-nav-brand span {
    font-size: 1rem; font-weight: 700; color: var(--text);
    letter-spacing: -0.02em;
}
.ir-nav-tabs {
    display: flex; gap: 4px;
    background: rgba(255,255,255,0.03);
    border: 1px solid var(--border);
    border-radius: 50px; padding: 3px;
}
.ir-nav-tab {
    padding: 5px 16px; border-radius: 50px;
    font-size: 0.75rem; font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer; transition: all var(--t);
    border: none; background: transparent;
    font-family: 'Poppins', sans-serif;
    white-space: nowrap;
}
.ir-nav-tab:hover { color: var(--text); }
.ir-nav-tab.active {
    background: var(--accent);
    color: #fff; font-weight: 600;
}
.ir-nav-actions {
    display: flex; align-items: center; gap: 8px;
    flex-shrink: 0;
}
.ir-nav-btn {
    display: flex; align-items: center; gap: 6px;
    background: transparent; border: 1px solid var(--border);
    border-radius: 50px; padding: 5px 14px;
    color: var(--text-secondary); cursor: pointer;
    font-size: 0.75rem; font-weight: 500;
    font-family: 'Poppins', sans-serif;
    transition: all var(--t);
}
.ir-nav-btn:hover {
    border-color: var(--border-hover);
    color: var(--text);
    background: rgba(255,255,255,0.03);
}
.ir-nav-btn svg { width: 14px; height: 14px; }

.ir-lang-toggle {
    display: flex; align-items: center; gap: 4px;
    background: rgba(255,255,255,0.05);
    border: 1px solid var(--border);
    border-radius: 50px; padding: 5px 12px;
    cursor: pointer; transition: all var(--t);
    font-family: 'Poppins', sans-serif;
}
.ir-lang-toggle:hover { border-color: var(--border-hover); }
.ir-lang-opt {
    font-size: 0.72rem; font-weight: 600;
    color: var(--text-muted);
    transition: color var(--t);
}
.ir-lang-opt.active { color: var(--accent); }
.ir-lang-sep { font-size: 0.65rem; color: var(--border-hover); }

.ir-hamburger {
    display: none; flex-direction: column; gap: 5px;
    cursor: pointer; background: none; border: none; padding: 4px;
}
.ir-hamburger span {
    width: 20px; height: 1.5px; background: var(--text-secondary);
    border-radius: 2px; transition: var(--t);
}

/* ===================== MAIN CONTENT ===================== */
.ir-main {
    max-width: 1100px; margin: 0 auto;
    padding: 80px 2rem 2rem;
    min-height: 100vh;
}

/* ===================== TOOLBAR ===================== */
.ir-toolbar {
    display: flex; align-items: center; justify-content: space-between;
    margin-bottom: 1.5rem; gap: 1rem; flex-wrap: wrap;
}
.ir-filter-tabs {
    display: flex; gap: 4px;
    background: rgba(255,255,255,0.03);
    border: 1px solid var(--border);
    border-radius: 50px; padding: 3px;
}
.ir-filter-tab {
    padding: 6px 18px; border-radius: 50px;
    font-size: 0.78rem; font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer; transition: all var(--t);
    border: none; background: transparent;
    font-family: 'Poppins', sans-serif;
}
.ir-filter-tab:hover { color: var(--text); }
.ir-filter-tab.active {
    background: var(--accent);
    color: #fff; font-weight: 600;
}
.ir-toolbar-right {
    display: flex; align-items: center; gap: 8px;
}
.ir-view-toggle {
    display: flex; background: rgba(255,255,255,0.03);
    border: 1px solid var(--border);
    border-radius: var(--radius-xs); overflow: hidden;
}
.ir-view-btn {
    padding: 6px 10px; border: none; background: transparent;
    color: var(--text-muted); cursor: pointer;
    transition: all var(--t);
    display: flex; align-items: center; justify-content: center;
}
.ir-view-btn:hover { color: var(--text-secondary); }
.ir-view-btn.active {
    background: var(--accent-soft);
    color: var(--accent);
}
.ir-view-btn svg { width: 16px; height: 16px; }

.ir-refresh-btn {
    display: flex; align-items: center; gap: 6px;
    background: var(--accent); color: #fff;
    border: none; border-radius: 50px;
    padding: 7px 18px; cursor: pointer;
    font-size: 0.78rem; font-weight: 600;
    font-family: 'Poppins', sans-serif;
    transition: all var(--t);
    box-shadow: 0 0 16px var(--accent-glow);
}
.ir-refresh-btn:hover {
    background: var(--accent-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 24px var(--accent-glow);
}
.ir-refresh-btn:disabled {
    opacity: 0.6; cursor: not-allowed; transform: none !important;
}
.ir-refresh-btn svg { width: 14px; height: 14px; }
.ir-refresh-btn.spinning svg {
    animation: spin 1s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.ir-sync-chip {
    font-size: 0.68rem; color: var(--text-muted);
    display: flex; align-items: center; gap: 4px;
}

/* ===================== ARTICLE LIST ===================== */
.ir-article-list {
    display: flex; flex-direction: column; gap: 1px;
}
.ir-article-row {
    display: flex; align-items: flex-start; gap: 1rem;
    padding: 1rem 1.2rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    cursor: pointer; transition: all var(--t);
    position: relative;
    margin-bottom: 0.5rem;
}
.ir-article-row:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-hover);
    transform: translateY(-1px);
}
.ir-article-row.read { opacity: 0.6; }
.ir-article-row.read:hover { opacity: 0.85; }

.ir-article-content { flex: 1; min-width: 0; }
.ir-article-meta {
    display: flex; align-items: center; gap: 8px;
    margin-bottom: 4px; flex-wrap: wrap;
}
.ir-article-source {
    font-size: 0.68rem; font-weight: 600;
    color: var(--accent); text-transform: uppercase;
    letter-spacing: 0.03em;
}
.ir-article-time {
    font-size: 0.68rem; color: var(--text-muted);
}
.ir-unread-dot {
    width: 6px; height: 6px;
    background: var(--accent);
    border-radius: 50%;
    box-shadow: 0 0 6px var(--accent-glow);
    flex-shrink: 0;
}
.ir-article-title {
    font-size: 0.88rem; font-weight: 600;
    color: var(--text); line-height: 1.4;
    margin-bottom: 4px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.ir-article-summary {
    font-size: 0.78rem; color: var(--text-secondary);
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.ir-article-thumb {
    width: 80px; height: 80px;
    border-radius: var(--radius-xs);
    object-fit: cover; flex-shrink: 0;
    opacity: 0.8; transition: opacity var(--t);
}
.ir-article-row:hover .ir-article-thumb { opacity: 1; }
.ir-article-actions {
    display: flex; align-items: center; gap: 6px;
    margin-top: 6px;
}
.ir-action-btn {
    background: none; border: none;
    color: var(--text-muted); cursor: pointer;
    padding: 4px; border-radius: 50%;
    transition: all var(--t);
    display: flex; align-items: center; justify-content: center;
}
.ir-action-btn:hover { color: var(--accent); background: var(--accent-soft); }
.ir-action-btn.active { color: var(--accent); }
.ir-action-btn svg { width: 16px; height: 16px; }

/* PDF Badge */
.ir-pdf-badge {
    display: inline-flex; align-items: center; gap: 3px;
    background: var(--accent-soft); color: var(--accent);
    font-size: 0.6rem; font-weight: 700;
    padding: 2px 8px; border-radius: 50px;
    border: 1px solid rgba(23,141,154,0.15);
    text-transform: uppercase; letter-spacing: 0.05em;
}
.ir-pdf-badge svg { width: 10px; height: 10px; }

/* ===================== ARTICLE GRID (Card mode) ===================== */
.ir-article-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}
.ir-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden; cursor: pointer;
    transition: all var(--t);
    display: flex; flex-direction: column;
}
.ir-card:hover {
    transform: translateY(-3px);
    border-color: var(--border-hover);
}
.ir-card.read { opacity: 0.6; }
.ir-card.read:hover { opacity: 0.85; }
.ir-card-img {
    width: 100%; aspect-ratio: 16/9; object-fit: cover;
    border-bottom: 2px solid var(--accent);
    opacity: 0.8; transition: opacity var(--t);
}
.ir-card:hover .ir-card-img { opacity: 1; }
.ir-card-img-placeholder {
    width: 100%; aspect-ratio: 16/9;
    background: linear-gradient(135deg, rgba(23,141,154,0.1), rgba(23,141,154,0.02));
    display: flex; align-items: center; justify-content: center;
    border-bottom: 2px solid var(--accent);
    color: var(--text-muted);
}
.ir-card-img-placeholder svg { width: 32px; height: 32px; opacity: 0.3; }
.ir-card-body {
    padding: 1.2rem; flex: 1;
    display: flex; flex-direction: column;
}
.ir-card-meta {
    display: flex; align-items: center; gap: 6px;
    margin-bottom: 0.5rem; flex-wrap: wrap;
}
.ir-card-title {
    font-size: 0.85rem; font-weight: 700;
    line-height: 1.4; margin-bottom: 0.4rem;
    color: var(--text);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.ir-card-summary {
    font-size: 0.75rem; color: var(--text-secondary);
    line-height: 1.6; flex: 1;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.ir-card-footer {
    display: flex; align-items: center; justify-content: space-between;
    padding: 0.7rem 1.2rem;
    border-top: 1px solid var(--border);
}

/* ===================== ARTICLE DETAIL ===================== */
.ir-detail {
    max-width: 720px; margin: 0 auto;
}
.ir-detail-header {
    margin-bottom: 2rem;
}
.ir-detail-back {
    display: inline-flex; align-items: center; gap: 6px;
    color: var(--accent); text-decoration: none;
    font-size: 0.82rem; font-weight: 500;
    margin-bottom: 1.5rem; cursor: pointer;
    transition: all var(--t);
    background: none; border: none;
    font-family: 'Poppins', sans-serif;
}
.ir-detail-back:hover { color: var(--accent-hover); }
.ir-detail-back svg { width: 16px; height: 16px; }
.ir-detail-title {
    font-size: 1.6rem; font-weight: 800;
    line-height: 1.25; margin-bottom: 0.8rem;
    letter-spacing: -0.02em;
}
.ir-detail-meta {
    display: flex; align-items: center; gap: 12px;
    flex-wrap: wrap; margin-bottom: 1rem;
}
.ir-detail-pdf-btn {
    display: inline-flex; align-items: center; gap: 6px;
    background: var(--accent); color: #fff;
    border: none; border-radius: var(--radius-xs);
    padding: 10px 20px; cursor: pointer;
    font-size: 0.82rem; font-weight: 600;
    font-family: 'Poppins', sans-serif;
    transition: all var(--t);
    box-shadow: 0 0 16px var(--accent-glow);
}
.ir-detail-pdf-btn:hover {
    background: var(--accent-hover);
    transform: translateY(-1px);
}
.ir-detail-pdf-btn svg { width: 16px; height: 16px; }

/* Article body */
.ir-detail-body {
    font-size: 0.92rem; line-height: 1.85;
    color: var(--text-secondary);
}
.ir-detail-body h1, .ir-detail-body h2, .ir-detail-body h3,
.ir-detail-body h4, .ir-detail-body h5, .ir-detail-body h6 {
    color: var(--text); margin: 1.5rem 0 0.5rem;
    font-weight: 700;
}
.ir-detail-body p { margin-bottom: 1rem; }
.ir-detail-body a { color: var(--accent); text-decoration: underline; }
.ir-detail-body a:hover { color: var(--accent-hover); }
.ir-detail-body img {
    max-width: 100%; border-radius: var(--radius-xs);
    margin: 1rem 0;
}
.ir-detail-body blockquote {
    border-left: 3px solid var(--accent);
    padding: 0.5rem 1rem; margin: 1rem 0;
    background: var(--bg-card);
    border-radius: 0 var(--radius-xs) var(--radius-xs) 0;
    color: var(--text-secondary);
}
.ir-detail-body code {
    background: var(--bg-card);
    padding: 2px 6px; border-radius: 4px;
    font-size: 0.85em;
}
.ir-detail-body pre {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-xs);
    padding: 1rem; overflow-x: auto;
    margin: 1rem 0;
}
.ir-detail-body pre code {
    background: transparent; padding: 0;
}

/* Reader controls bar */
.ir-reader-controls {
    display: flex; align-items: center; gap: 12px;
    padding: 10px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}
.ir-reader-control-group {
    display: flex; align-items: center; gap: 4px;
}
.ir-reader-ctrl-btn {
    padding: 5px 12px; border-radius: 50px;
    font-size: 0.72rem; font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer; transition: all var(--t);
    border: 1px solid transparent;
    background: transparent;
    font-family: 'Poppins', sans-serif;
}
.ir-reader-ctrl-btn:hover { color: var(--text); background: rgba(255,255,255,0.05); }
.ir-reader-ctrl-btn.active {
    color: var(--accent); border-color: var(--accent);
    background: var(--accent-soft);
}
.ir-reader-ctrl-divider {
    width: 1px; height: 20px;
    background: var(--border); margin: 0 4px;
}
.ir-font-size-btn {
    width: 30px; height: 30px;
    display: flex; align-items: center; justify-content: center;
    background: transparent; border: 1px solid var(--border);
    border-radius: 50%; color: var(--text-secondary);
    cursor: pointer; transition: all var(--t);
    font-size: 0.82rem; font-weight: 600;
    font-family: 'Poppins', sans-serif;
}
.ir-font-size-btn:hover { border-color: var(--accent); color: var(--accent); }

/* Sepia theme */
.ir-detail-body.sepia {
    background: #F4ECD8; color: #3C2E1E;
    padding: 2rem; border-radius: var(--radius);
}
.ir-detail-body.sepia a { color: #8A5A2B; }
.ir-detail-body.sepia blockquote { background: #EDE4D0; border-left-color: #8A5A2B; }
.ir-detail-body.sepia code, .ir-detail-body.sepia pre { background: #EDE4D0; }
.ir-detail-body.sepia h1, .ir-detail-body.sepia h2, .ir-detail-body.sepia h3,
.ir-detail-body.sepia h4, .ir-detail-body.sepia h5, .ir-detail-body.sepia h6 {
    color: #2C1E0F;
}

/* Serif font */
.ir-detail-body.serif { font-family: Georgia, 'Times New Roman', serif; }

/* ===================== PDF VIEWER ===================== */
.ir-pdf-container {
    position: fixed; inset: 0;
    z-index: 200; background: var(--bg);
    display: flex; flex-direction: column;
}
.ir-pdf-toolbar {
    display: flex; align-items: center; justify-content: space-between;
    padding: 8px 16px; gap: 12px;
    background: rgba(10,10,10,0.95);
    border-bottom: 1px solid var(--border);
    backdrop-filter: blur(24px);
    flex-shrink: 0;
}
.ir-pdf-toolbar-left,
.ir-pdf-toolbar-center,
.ir-pdf-toolbar-right {
    display: flex; align-items: center; gap: 8px;
}
.ir-pdf-close {
    display: flex; align-items: center; justify-content: center;
    width: 32px; height: 32px;
    background: transparent; border: 1px solid var(--border);
    border-radius: 50%; color: var(--text-secondary);
    cursor: pointer; transition: all var(--t);
}
.ir-pdf-close:hover { border-color: var(--border-hover); color: var(--text); }
.ir-pdf-close svg { width: 16px; height: 16px; }
.ir-pdf-page-info {
    font-size: 0.78rem; color: var(--text-secondary);
    display: flex; align-items: center; gap: 4px;
}
.ir-pdf-page-input {
    width: 40px; text-align: center;
    background: var(--bg-card); border: 1px solid var(--border);
    border-radius: var(--radius-xs); color: var(--text);
    font-size: 0.78rem; padding: 3px;
    font-family: 'Poppins', sans-serif;
}
.ir-pdf-page-input:focus {
    border-color: var(--accent);
    outline: none;
}
.ir-pdf-zoom-btn {
    display: flex; align-items: center; justify-content: center;
    width: 28px; height: 28px;
    background: transparent; border: 1px solid var(--border);
    border-radius: var(--radius-xs); color: var(--text-secondary);
    cursor: pointer; transition: all var(--t);
}
.ir-pdf-zoom-btn:hover { border-color: var(--border-hover); color: var(--text); }
.ir-pdf-zoom-btn svg { width: 14px; height: 14px; }

.ir-pdf-bookmark-fab {
    position: fixed; bottom: 24px; right: 24px;
    width: 48px; height: 48px;
    background: var(--accent); color: #fff;
    border: none; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    cursor: pointer; z-index: 210;
    box-shadow: 0 0 20px var(--accent-glow);
    transition: all var(--t);
}
.ir-pdf-bookmark-fab:hover {
    transform: scale(1.1);
    box-shadow: 0 4px 30px var(--accent-glow);
}
.ir-pdf-bookmark-fab.bookmarked { background: var(--yellow); color: #333; }
.ir-pdf-bookmark-fab svg { width: 22px; height: 22px; }

.ir-pdf-iframe {
    flex: 1; border: none; width: 100%;
    background: #525659;
}

/* Version banner */
.ir-version-banner {
    display: flex; align-items: center; justify-content: center; gap: 12px;
    padding: 8px 16px;
    background: var(--accent-soft);
    border-bottom: 1px solid rgba(23,141,154,0.2);
    font-size: 0.78rem;
}
.ir-version-banner span { color: var(--text-secondary); }
.ir-version-banner strong { color: var(--accent); }
.ir-version-banner button {
    background: var(--accent); color: #fff;
    border: none; border-radius: 50px;
    padding: 3px 14px; font-size: 0.72rem;
    font-weight: 600; cursor: pointer;
    font-family: 'Poppins', sans-serif;
    transition: all var(--t);
}
.ir-version-banner button:hover { background: var(--accent-hover); }

/* PDF download progress */
.ir-pdf-progress {
    display: flex; flex-direction: column;
    align-items: center; justify-content: center;
    flex: 1; gap: 1rem;
}
.ir-pdf-progress-bar {
    width: 200px; height: 4px;
    background: var(--border);
    border-radius: 2px; overflow: hidden;
}
.ir-pdf-progress-fill {
    height: 100%; background: var(--accent);
    border-radius: 2px;
    transition: width 0.3s ease;
    box-shadow: 0 0 8px var(--accent-glow);
}
.ir-pdf-progress-text {
    font-size: 0.82rem; color: var(--text-secondary);
}

/* PDF error */
.ir-pdf-error {
    display: flex; flex-direction: column;
    align-items: center; justify-content: center;
    flex: 1; gap: 1rem; text-align: center;
    padding: 2rem;
}
.ir-pdf-error svg { width: 48px; height: 48px; color: var(--text-muted); }
.ir-pdf-error-msg { font-size: 0.92rem; color: var(--text-secondary); }
.ir-pdf-error-actions { display: flex; gap: 8px; }

/* ===================== ANNOTATION POPOVER ===================== */
.ir-popover {
    position: fixed; z-index: 220;
    background: var(--bg-card);
    border: 1px solid var(--border-hover);
    border-radius: var(--radius);
    padding: 10px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.5);
    display: flex; flex-direction: column; gap: 8px;
    min-width: 180px;
}
.ir-popover-colors {
    display: flex; gap: 8px; justify-content: center;
}
.ir-popover-color {
    width: 32px; height: 32px;
    border-radius: 50%; border: 2px solid transparent;
    cursor: pointer; transition: all var(--t);
}
.ir-popover-color:hover { transform: scale(1.15); }
.ir-popover-color.selected { border-color: var(--text); transform: scale(1.15); }
.ir-popover-color.yellow { background: var(--yellow); }
.ir-popover-color.green { background: var(--hl-green); }
.ir-popover-color.blue { background: var(--hl-blue); }
.ir-popover-color.pink { background: var(--hl-pink); }

.ir-popover-note {
    width: 100%;
    background: var(--bg); border: 1px solid var(--border);
    border-radius: var(--radius-xs); color: var(--text);
    font-size: 0.78rem; padding: 8px;
    font-family: 'Poppins', sans-serif;
    resize: vertical; min-height: 60px;
    outline: none;
}
.ir-popover-note:focus { border-color: var(--accent); }
.ir-popover-actions {
    display: flex; gap: 6px; justify-content: flex-end;
}
.ir-popover-btn {
    padding: 4px 12px; border-radius: 50px;
    font-size: 0.72rem; font-weight: 600;
    cursor: pointer; transition: all var(--t);
    border: 1px solid var(--border);
    background: transparent; color: var(--text-secondary);
    font-family: 'Poppins', sans-serif;
}
.ir-popover-btn:hover { border-color: var(--border-hover); color: var(--text); }
.ir-popover-btn.primary {
    background: var(--accent); color: #fff; border-color: var(--accent);
}
.ir-popover-btn.primary:hover { background: var(--accent-hover); }
.ir-popover-btn.danger { color: var(--red); border-color: var(--red); }
.ir-popover-btn.danger:hover { background: var(--red-soft); }

/* ===================== BOTTOM SHEET ===================== */
.ir-sheet-overlay {
    position: fixed; inset: 0; z-index: 250;
    background: rgba(0,0,0,0.6);
    backdrop-filter: blur(4px);
    display: flex; align-items: flex-end; justify-content: center;
    animation: fadeIn 0.2s ease;
}
.ir-sheet {
    width: 100%; max-width: 480px;
    max-height: 60vh;
    background: var(--bg-card);
    border-top: 1px solid var(--border-hover);
    border-radius: var(--radius) var(--radius) 0 0;
    padding: 1.5rem;
    overflow-y: auto;
    animation: slideUp 0.3s cubic-bezier(0.16, 1, 0.32, 1);
}
@keyframes slideUp {
    from { transform: translateY(100%); }
    to { transform: translateY(0); }
}
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}
.ir-sheet-title {
    font-size: 0.95rem; font-weight: 700;
    margin-bottom: 1rem; color: var(--text);
}
.ir-sheet-item {
    display: flex; align-items: center; gap: 10px;
    padding: 10px 12px;
    border-radius: var(--radius-xs);
    cursor: pointer; transition: all var(--t);
}
.ir-sheet-item:hover { background: rgba(255,255,255,0.05); }
.ir-sheet-item svg { width: 18px; height: 18px; color: var(--accent); flex-shrink: 0; }
.ir-sheet-item span { font-size: 0.82rem; color: var(--text); }
.ir-sheet-empty {
    text-align: center; color: var(--text-muted);
    font-size: 0.82rem; padding: 2rem 0;
}

/* Highlight editor in sheet */
.ir-hl-editor-excerpt {
    font-style: italic; color: var(--text-muted);
    font-size: 0.82rem; line-height: 1.6;
    padding: 10px; background: var(--bg);
    border-radius: var(--radius-xs);
    margin-bottom: 1rem;
    border-left: 3px solid var(--accent);
}
.ir-hl-editor-colors {
    display: flex; gap: 8px; margin-bottom: 1rem;
}
.ir-hl-editor-color {
    width: 28px; height: 28px;
    border-radius: 50%; border: 2px solid transparent;
    cursor: pointer; transition: all var(--t);
}
.ir-hl-editor-color.selected { border-color: var(--text); transform: scale(1.15); }
.ir-hl-editor-note {
    width: 100%;
    background: var(--bg); border: 1px solid var(--border);
    border-radius: var(--radius-xs); color: var(--text);
    font-size: 0.82rem; padding: 10px;
    font-family: 'Poppins', sans-serif;
    resize: vertical; min-height: 80px;
    margin-bottom: 1rem; outline: none;
}
.ir-hl-editor-note:focus { border-color: var(--accent); }
.ir-hl-editor-actions {
    display: flex; gap: 8px; justify-content: flex-end;
}

/* ===================== SOURCES PAGE ===================== */
.ir-sources-header {
    display: flex; align-items: center; justify-content: space-between;
    margin-bottom: 1.5rem; gap: 1rem; flex-wrap: wrap;
}
.ir-sources-search {
    flex: 1; min-width: 200px;
    background: var(--bg-card); border: 1px solid var(--border);
    border-radius: 50px; color: var(--text);
    font-size: 0.82rem; padding: 8px 16px;
    font-family: 'Poppins', sans-serif;
    outline: none; transition: border-color var(--t);
}
.ir-sources-search:focus { border-color: var(--accent); }
.ir-sources-add-btn {
    display: flex; align-items: center; gap: 6px;
    background: var(--accent); color: #fff;
    border: none; border-radius: 50px;
    padding: 8px 18px; cursor: pointer;
    font-size: 0.78rem; font-weight: 600;
    font-family: 'Poppins', sans-serif;
    transition: all var(--t);
    box-shadow: 0 0 16px var(--accent-glow);
}
.ir-sources-add-btn:hover { background: var(--accent-hover); }
.ir-sources-add-btn svg { width: 14px; height: 14px; }

.ir-sources-group-title {
    font-size: 0.72rem; font-weight: 700;
    color: var(--text-muted); text-transform: uppercase;
    letter-spacing: 0.08em;
    padding: 12px 0 6px; margin-top: 0.5rem;
}
.ir-source-row {
    display: flex; align-items: center; gap: 12px;
    padding: 12px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    margin-bottom: 0.5rem;
    transition: all var(--t);
}
.ir-source-row:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-hover);
}
.ir-source-info { flex: 1; min-width: 0; }
.ir-source-title {
    font-size: 0.85rem; font-weight: 600; color: var(--text);
    display: flex; align-items: center; gap: 6px;
}
.ir-source-url {
    font-size: 0.7rem; color: var(--text-muted);
    overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}

/* Toggle switch */
.ir-toggle {
    position: relative; width: 40px; height: 22px; flex-shrink: 0;
}
.ir-toggle input { opacity: 0; width: 0; height: 0; }
.ir-toggle-slider {
    position: absolute; inset: 0;
    background: var(--border-hover); border-radius: 50px;
    cursor: pointer; transition: background var(--t);
}
.ir-toggle-slider::before {
    content: ''; position: absolute;
    top: 3px; left: 3px;
    width: 16px; height: 16px;
    background: var(--text-muted);
    border-radius: 50%; transition: all var(--t);
}
.ir-toggle input:checked + .ir-toggle-slider { background: var(--accent); }
.ir-toggle input:checked + .ir-toggle-slider::before {
    transform: translateX(18px);
    background: #fff;
}

.ir-source-delete {
    background: none; border: none;
    color: var(--text-muted); cursor: pointer;
    padding: 4px; transition: color var(--t);
}
.ir-source-delete:hover { color: var(--red); }
.ir-source-delete svg { width: 16px; height: 16px; }

/* Add source form (modal/sheet) */
.ir-add-source-form {
    display: flex; flex-direction: column; gap: 1rem;
}
.ir-form-group { display: flex; flex-direction: column; gap: 4px; }
.ir-form-label {
    font-size: 0.78rem; font-weight: 600;
    color: var(--text-secondary);
}
.ir-form-input {
    background: var(--bg); border: 1px solid var(--border);
    border-radius: var(--radius-xs); color: var(--text);
    font-size: 0.85rem; padding: 10px 14px;
    font-family: 'Poppins', sans-serif;
    outline: none; transition: border-color var(--t);
}
.ir-form-input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.ir-form-input::placeholder { color: var(--text-muted); }
.ir-form-select {
    background: var(--bg); border: 1px solid var(--border);
    border-radius: var(--radius-xs); color: var(--text);
    font-size: 0.85rem; padding: 10px 14px;
    font-family: 'Poppins', sans-serif;
    outline: none; cursor: pointer;
}
.ir-form-actions {
    display: flex; gap: 8px; justify-content: flex-end;
}

/* Preview block */
.ir-preview-block {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-xs);
    padding: 12px;
}
.ir-preview-title {
    font-size: 0.82rem; font-weight: 600;
    color: var(--accent); margin-bottom: 6px;
}
.ir-preview-item {
    font-size: 0.75rem; color: var(--text-secondary);
    padding: 3px 0;
    border-bottom: 1px solid var(--border);
}
.ir-preview-item:last-child { border-bottom: none; }

/* ===================== SNACKBAR ===================== */
.ir-snackbar {
    position: fixed; bottom: 24px; left: 50%;
    transform: translateX(-50%);
    background: var(--bg-card);
    border: 1px solid var(--border-hover);
    border-radius: var(--radius);
    padding: 12px 20px;
    display: flex; align-items: center; gap: 12px;
    font-size: 0.82rem; color: var(--text-secondary);
    box-shadow: 0 8px 32px rgba(0,0,0,0.4);
    z-index: 300;
    animation: slideUp 0.3s cubic-bezier(0.16, 1, 0.32, 1);
}
.ir-snackbar-action {
    color: var(--accent); font-weight: 600;
    cursor: pointer; background: none; border: none;
    font-family: 'Poppins', sans-serif;
    font-size: 0.82rem;
}
.ir-snackbar-action:hover { color: var(--accent-hover); }

/* ===================== EMPTY STATE ===================== */
.ir-empty {
    display: flex; flex-direction: column;
    align-items: center; justify-content: center;
    padding: 4rem 2rem; text-align: center;
}
.ir-empty svg { width: 48px; height: 48px; color: var(--text-muted); margin-bottom: 1rem; }
.ir-empty-title { font-size: 1rem; font-weight: 600; margin-bottom: 0.3rem; }
.ir-empty-desc { font-size: 0.82rem; color: var(--text-muted); }

/* ===================== LOADING ===================== */
.ir-loading {
    display: flex; align-items: center; justify-content: center;
    padding: 4rem; color: var(--text-muted);
    font-size: 0.85rem; gap: 8px;
}
.ir-spinner {
    width: 20px; height: 20px;
    border: 2px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

/* ===================== SKELETON ===================== */
.ir-skeleton {
    background: linear-gradient(90deg, var(--bg-card) 25%, var(--bg-card-hover) 50%, var(--bg-card) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: var(--radius-xs);
}
@keyframes shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}
.ir-skeleton-row {
    height: 80px; margin-bottom: 0.5rem;
    border-radius: var(--radius);
}
.ir-skeleton-card {
    height: 260px; border-radius: var(--radius);
}

/* ===================== RESPONSIVE ===================== */
@media (max-width: 1024px) {
    .ir-article-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .ir-hamburger { display: flex; }
    .ir-nav-tabs {
        display: none; position: absolute;
        top: 60px; left: 0; right: 0;
        background: rgba(10,10,10,0.98);
        backdrop-filter: blur(24px);
        border-bottom: 1px solid var(--border);
        flex-direction: column; padding: 1rem;
        border-radius: 0;
    }
    .ir-nav-tabs.active { display: flex; }
    .ir-main { padding: 80px 1rem 1rem; }
    .ir-article-grid { grid-template-columns: 1fr; }
    .ir-toolbar { flex-direction: column; align-items: stretch; }
    .ir-filter-tabs { justify-content: center; flex-wrap: wrap; }
    .ir-toolbar-right { justify-content: space-between; }
    .ir-detail-title { font-size: 1.3rem; }
    .ir-pdf-toolbar { padding: 6px 10px; }
    .ir-sources-header { flex-direction: column; }
}

@media (max-width: 480px) {
    .ir-article-thumb { width: 60px; height: 60px; }
    .ir-nav-actions { gap: 4px; }
}