:root {
    --ink: #1c2541;
    --ink-soft: #5b6278;
    --paper: #f6f3ec;
    --surface: #ffffff;
    --accent: #c1902f;
    --accent-dark: #93701f;
    --border: #e7e0cf;
    --border-soft: #efe9db;
    --shadow-sm: 0 1px 2px rgba(28, 37, 65, .07);
    --shadow-md: 0 10px 26px rgba(28, 37, 65, .10);
    --shadow-lg: 0 20px 50px rgba(20, 27, 48, .20);
    --radius-sm: 8px;
    --radius: 14px;
    --radius-lg: 20px;

    --c-civilica: #1f7a5c;
    --c-magiran: #b0492f;
    --c-noormags: #2c5f8a;
    --c-ensani: #8a6423;
    --c-international: #6b4fa0;
    --c-openalex: #b23a6b;
    --c-arxiv: #0f8b8d;
    --c-europepmc: #4a55b0;
    --c-pubmed: #1a6b8a;
    --c-clinicaltrials: #2d7d9a;
    --c-doaj: #1e5e3c;
    --c-plos: #e87722;
    --c-dblp: #4a6741;
    --c-hal: #0063a6;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
    margin: 0;
    font-family: 'Vazirmatn', Tahoma, Arial, sans-serif;
    background: var(--paper);
    color: var(--ink);
    line-height: 1.8;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- Hero ---------- */

.site-hero {
    position: relative;
    overflow: hidden;
    text-align: center;
    padding: 56px 20px 60px;
    background:
        radial-gradient(900px 420px at 14% -18%, rgba(193, 144, 47, .32), transparent 60%),
        repeating-linear-gradient(180deg, rgba(255, 255, 255, .045) 0 1px, transparent 1px 30px),
        linear-gradient(165deg, #223055 0%, #131a30 100%);
}

.hero-inner {
    max-width: 620px;
    margin: 0 auto;
}

.hero-logo {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    max-width: 220px;
    text-decoration: none;
}

.hero-logo img {
    display: block;
    max-width: 100%;
    max-height: 72px;
    width: auto;
    height: auto;
    object-fit: contain;
}

.hero-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: .78rem;
    font-weight: 600;
    color: #f2dda2;
    background: rgba(255, 255, 255, .08);
    border: 1px solid rgba(255, 255, 255, .16);
    padding: 6px 16px;
    border-radius: 999px;
    margin-bottom: 18px;
}

.site-hero h1 {
    margin: 0 0 14px;
    font-size: clamp(1.6rem, 1.15rem + 2vw, 2.3rem);
    font-weight: 800;
    color: #fff;
    letter-spacing: -.01em;
}

.hero-subtitle {
    margin: 0 auto;
    max-width: 560px;
    color: rgba(255, 255, 255, .82);
    font-size: 1rem;
}

.hero-stat {
    display: inline-flex;
    align-items: baseline;
    gap: 10px;
    flex-wrap: wrap;
    justify-content: center;
}

.hero-stat strong {
    font-size: clamp(1.7rem, 1.2rem + 1.6vw, 2.4rem);
    font-weight: 800;
    color: #f2dda2;
    letter-spacing: .02em;
    font-variant-numeric: tabular-nums;
    line-height: 1;
    transition: transform .25s ease, color .25s ease;
}

.hero-stat strong.is-counting {
    transform: scale(1.04);
    color: #ffe8b8;
}

.hero-stat span {
    font-size: .95rem;
    font-weight: 600;
    color: rgba(255, 255, 255, .86);
}

.shelf-strip {
    display: flex;
    width: 100%;
    height: 5px;
    margin-top: 44px;
}

.shelf-strip i {
    flex: 1;
    background: var(--seg-color, rgba(255, 255, 255, .3));
    opacity: .6;
    transform-origin: center;
}

.shelf-strip i[data-source="civilica"] { --seg-color: var(--c-civilica); }
.shelf-strip i[data-source="magiran"] { --seg-color: var(--c-magiran); }
.shelf-strip i[data-source="noormags"] { --seg-color: var(--c-noormags); }
.shelf-strip i[data-source="ensani"] { --seg-color: var(--c-ensani); }
.shelf-strip i[data-source="international"] { --seg-color: var(--c-international); }
.shelf-strip i[data-source="openalex"] { --seg-color: var(--c-openalex); }
.shelf-strip i[data-source="arxiv"] { --seg-color: var(--c-arxiv); }
.shelf-strip i[data-source="europepmc"] { --seg-color: var(--c-europepmc); }
.shelf-strip i[data-source="pubmed"] { --seg-color: var(--c-pubmed); }
.shelf-strip i[data-source="clinicaltrials"] { --seg-color: var(--c-clinicaltrials); }
.shelf-strip i[data-source="doaj"] { --seg-color: var(--c-doaj); }
.shelf-strip i[data-source="plos"] { --seg-color: var(--c-plos); }
.shelf-strip i[data-source="dblp"] { --seg-color: var(--c-dblp); }
.shelf-strip i[data-source="hal"] { --seg-color: var(--c-hal); }

@media (prefers-reduced-motion: no-preference) {
    .shelf-strip.is-scanning i { animation: shelfPulse 1.1s ease; }
    .shelf-strip.is-scanning i:nth-child(1) { animation-delay: 0ms; }
    .shelf-strip.is-scanning i:nth-child(2) { animation-delay: 80ms; }
    .shelf-strip.is-scanning i:nth-child(3) { animation-delay: 160ms; }
    .shelf-strip.is-scanning i:nth-child(4) { animation-delay: 240ms; }
    .shelf-strip.is-scanning i:nth-child(5) { animation-delay: 320ms; }
    .shelf-strip.is-scanning i:nth-child(6) { animation-delay: 400ms; }
    .shelf-strip.is-scanning i:nth-child(7) { animation-delay: 480ms; }
    .shelf-strip.is-scanning i:nth-child(8) { animation-delay: 560ms; }
}

@keyframes shelfPulse {
    0% { opacity: .6; transform: scaleY(1); }
    35% { opacity: 1; transform: scaleY(2.4); }
    100% { opacity: .6; transform: scaleY(1); }
}

/* ---------- Container & search card ---------- */

.container {
    max-width: 880px;
    margin: 0 auto 48px;
    padding: 0 16px;
}

.search-card-wrap {
    position: relative;
    z-index: 2;
    margin-top: -34px;
    background:
        linear-gradient(180deg, rgba(255, 255, 255, .72), transparent 28px),
        var(--surface);
    border: 1px solid var(--border-soft);
    border-radius: 22px;
    box-shadow:
        0 1px 0 rgba(255, 255, 255, .85) inset,
        var(--shadow-lg);
    padding: 14px 16px 16px;
}

.search-console {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.search-box {
    position: relative;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 6px 6px 8px;
    background: var(--paper);
    border: 1.5px solid var(--border);
    border-radius: 16px;
    transition: border-color .18s ease, box-shadow .18s ease, background .18s ease;
}

.search-box:focus-within {
    background: #fff;
    border-color: color-mix(in srgb, var(--accent) 65%, var(--border));
    box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 16%, transparent);
}

.search-icon {
    position: static;
    inset: auto;
    transform: none;
    flex: none;
    display: flex;
    color: var(--ink-soft);
    padding-inline-start: 8px;
    pointer-events: none;
}

.search-box:focus-within .search-icon {
    color: var(--accent-dark);
}

.search-box input[type="search"] {
    flex: 1;
    min-width: 0;
    border: 0;
    border-radius: 0;
    padding: 11px 8px 11px 4px;
    padding-inline-start: 4px;
    font-size: 1.02rem;
    font-family: inherit;
    background: transparent;
    color: var(--ink);
    outline: none;
    box-shadow: none;
}

.search-box input[type="search"]::placeholder { color: #9a9784; }

.search-box input[type="search"]:focus {
    border-color: transparent;
    background: transparent;
}

.search-box button {
    position: relative;
    flex: none;
    height: 44px;
    background: var(--ink);
    color: #fff;
    border: none;
    border-radius: 12px;
    padding: 0 22px;
    font-size: .95rem;
    font-weight: 700;
    font-family: inherit;
    letter-spacing: .01em;
    cursor: pointer;
    transition: background .15s ease, transform .1s ease;
}

.search-box button:hover { background: #101a30; }
.search-box button:active { transform: translateY(1px); }
.search-box button:disabled { opacity: .6; cursor: default; }

.search-box button.is-loading span { opacity: 0; }

.search-box button.is-loading::after {
    content: '';
    position: absolute;
    inset: 0;
    margin: auto;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, .4);
    border-top-color: #fff;
    animation: spin .7s linear infinite;
}

.search-box button:focus-visible,
.search-box input[type="search"]:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

/* ---------- Live connection hub ---------- */

.live-hub {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: 10px;
    padding: 10px 12px;
    border-radius: 14px;
    border: 1px solid color-mix(in srgb, var(--accent) 22%, var(--border-soft));
    background:
        linear-gradient(135deg, color-mix(in srgb, var(--accent) 7%, #fff) 0%, var(--paper) 55%);
    overflow: hidden;
    position: relative;
    transition: border-color .25s ease, box-shadow .25s ease, background .25s ease;
}

.live-hub[hidden] {
    display: none !important;
}

.live-hub::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(
        105deg,
        transparent 40%,
        color-mix(in srgb, var(--accent) 14%, transparent) 50%,
        transparent 60%
    );
    transform: translateX(120%);
    pointer-events: none;
}

.live-hub-beacon {
    position: relative;
    width: 28px;
    height: 28px;
    flex: none;
}

.live-hub-core {
    position: absolute;
    inset: 9px;
    border-radius: 50%;
    background: #3d9a5c;
    box-shadow: 0 0 0 2px rgba(61, 154, 92, .25);
    z-index: 2;
}

.live-hub-ring {
    position: absolute;
    inset: 0;
    border-radius: 50%;
    border: 2px solid rgba(61, 154, 92, .45);
    opacity: 0;
}

.live-hub-body {
    display: flex;
    flex-direction: column;
    gap: 2px;
    min-width: 0;
    flex: 1;
}

.live-hub-body strong {
    font-size: .82rem;
    font-weight: 800;
    color: var(--ink);
    letter-spacing: -.01em;
}

.live-hub-body span {
    font-size: .72rem;
    color: var(--ink-soft);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.live-hub-nodes {
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
    justify-content: flex-end;
    max-width: 42%;
}

.live-hub-node {
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: var(--node-color, var(--accent));
    opacity: .35;
    transform: scale(.85);
    transition: opacity .2s ease, transform .2s ease, box-shadow .2s ease;
    flex: none;
}

.live-hub-node.is-pending {
    opacity: 1;
    transform: scale(1);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--node-color, var(--accent)) 28%, transparent);
}

.live-hub-node.is-done {
    opacity: 1;
    transform: scale(1);
    box-shadow: none;
}

.live-hub-node.is-error {
    opacity: 1;
    background: #c44;
    box-shadow: 0 0 0 3px rgba(196, 68, 68, .22);
}

.live-hub--idle .live-hub-core {
    animation: liveCoreIdle 2.4s ease-in-out infinite;
}

.live-hub--active {
    border-color: color-mix(in srgb, var(--accent) 45%, var(--border));
    box-shadow:
        0 0 0 3px color-mix(in srgb, var(--accent) 12%, transparent),
        0 8px 22px color-mix(in srgb, var(--accent) 10%, transparent);
}

.live-hub--active::after {
    animation: liveSweep 2.2s ease-in-out infinite;
}

.live-hub--active .live-hub-core {
    background: var(--accent);
    box-shadow: 0 0 10px color-mix(in srgb, var(--accent) 55%, transparent);
    animation: liveCoreActive .85s ease-in-out infinite;
}

.live-hub--active .live-hub-ring {
    animation: liveRing 1.8s ease-out infinite;
}

.live-hub--active .live-hub-ring--delay {
    animation-delay: .55s;
}

.live-hub--active .live-hub-node.is-pending {
    animation: liveNodePulse 1.1s ease-in-out infinite;
}

.live-hub--done {
    border-color: color-mix(in srgb, #3d9a5c 35%, var(--border-soft));
    background: linear-gradient(135deg, color-mix(in srgb, #3d9a5c 8%, #fff) 0%, var(--paper) 60%);
}

.live-hub--done .live-hub-core {
    background: #3d9a5c;
    animation: liveCoreDone .6s ease;
}

@keyframes liveCoreIdle {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.12); opacity: .88; }
}

@keyframes liveCoreActive {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.18); }
}

@keyframes liveCoreDone {
    0% { transform: scale(1.3); }
    100% { transform: scale(1); }
}

@keyframes liveRing {
    0% { transform: scale(.55); opacity: .75; }
    100% { transform: scale(1.65); opacity: 0; }
}

@keyframes liveSweep {
    0% { transform: translateX(120%); }
    100% { transform: translateX(-120%); }
}

@keyframes liveNodePulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.35); opacity: .72; }
}

@media (prefers-reduced-motion: reduce) {
    .live-hub--idle .live-hub-core,
    .live-hub--active .live-hub-core,
    .live-hub--active .live-hub-ring,
    .live-hub--active::after,
    .live-hub--active .live-hub-node.is-pending,
    .live-hub--done .live-hub-core {
        animation: none;
    }
}

.search-toolbar {
    display: flex;
    align-items: center;
    gap: 14px 18px;
    flex-wrap: wrap;
    padding: 2px 4px 0;
}

.toolbar-label {
    flex: none;
    font-size: .68rem;
    font-weight: 700;
    letter-spacing: .08em;
    color: #9a9483;
    user-select: none;
}

/* ---------- Source chips ---------- */

.source-picker {
    display: flex;
    align-items: center;
    gap: 8px;
    margin: 0;
    min-width: 0;
    padding: 0;
    border: 0;
    background: none;
    flex: 1 1 280px;
}

.chip-row {
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
    min-width: 0;
}

.chip {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px 4px 8px;
    border-radius: 999px;
    border: 1px solid transparent;
    background: transparent;
    color: var(--ink-soft);
    font-size: .75rem;
    cursor: pointer;
    user-select: none;
    transition: border-color .15s ease, background .15s ease, color .15s ease;
}

.chip:hover {
    background: color-mix(in srgb, var(--chip-color, var(--accent)) 8%, #fff);
    color: var(--ink);
}

.chip input {
    position: absolute;
    inset: 0;
    margin: 0;
    opacity: 0;
    cursor: pointer;
}

.chip input:focus-visible ~ .chip-dot {
    outline: 2px solid var(--chip-color, var(--accent));
    outline-offset: 3px;
}

.chip-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--chip-color, var(--accent));
    flex: none;
}

.chip[data-source="civilica"] { --chip-color: var(--c-civilica); }
.chip[data-source="magiran"] { --chip-color: var(--c-magiran); }
.chip[data-source="noormags"] { --chip-color: var(--c-noormags); }
.chip[data-source="ensani"] { --chip-color: var(--c-ensani); }
.chip[data-source="international"] { --chip-color: var(--c-international); }
.chip[data-source="openalex"] { --chip-color: var(--c-openalex); }
.chip[data-source="arxiv"] { --chip-color: var(--c-arxiv); }
.chip[data-source="europepmc"] { --chip-color: var(--c-europepmc); }
.chip[data-source="pubmed"] { --chip-color: var(--c-pubmed); }
.chip[data-source="clinicaltrials"] { --chip-color: var(--c-clinicaltrials); }
.chip[data-source="doaj"] { --chip-color: var(--c-doaj); }
.chip[data-source="plos"] { --chip-color: var(--c-plos); }
.chip[data-source="dblp"] { --chip-color: var(--c-dblp); }
.chip[data-source="hal"] { --chip-color: var(--c-hal); }

.chip.chip-active {
    background: color-mix(in srgb, var(--chip-color, var(--accent)) 12%, #fff);
    color: var(--ink);
    font-weight: 650;
}

.chip:not(.chip-active) {
    color: #8a8576;
}

.chip:not(.chip-active) .chip-dot {
    opacity: .4;
}

/* ---------- International publisher panel ---------- */

.chip-with-expand {
    display: inline-flex;
    align-items: stretch;
    gap: 0;
    border-radius: 999px;
    overflow: hidden;
    background: transparent;
}

.chip-with-expand .chip {
    border: 0;
    border-radius: 0;
    padding-inline-end: 6px;
}

.chip-with-expand:has(.chip-active) {
    background: color-mix(in srgb, var(--c-international) 12%, #fff);
}

.chip-expand-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    border: 0;
    background: transparent;
    color: var(--ink-soft);
    cursor: pointer;
    padding: 0 6px 0 0;
    transition: color .15s ease;
}

.chip-expand-btn:hover,
.chip-expand-btn:focus-visible {
    color: var(--c-international);
    outline: none;
}

body.intl-open {
    overflow: hidden;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.intl-popover {
    position: fixed;
    inset: 0;
    z-index: 40;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding: 88px 16px 24px;
    background: rgba(18, 24, 43, .28);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.intl-popover[hidden] {
    display: none !important;
}

.intl-popover:not([hidden]) {
    animation: intlScrim .2s ease;
}

@keyframes intlScrim {
    from { opacity: 0; }
    to { opacity: 1; }
}

.intl-popover-card {
    width: min(560px, 100%);
    max-height: min(78vh, 640px);
    overflow: auto;
    padding: 18px 18px 16px;
    border-radius: 22px;
    border: 1px solid rgba(255, 255, 255, .38);
    background:
        linear-gradient(165deg, rgba(255, 255, 255, .72), rgba(246, 243, 236, .58));
    box-shadow:
        0 1px 0 rgba(255, 255, 255, .7) inset,
        0 24px 60px rgba(18, 24, 43, .22);
    backdrop-filter: blur(22px);
    -webkit-backdrop-filter: blur(22px);
    animation: intlCardIn .28s ease;
}

@keyframes intlCardIn {
    from { opacity: 0; transform: translateY(10px) scale(.98); }
    to { opacity: 1; transform: none; }
}

.intl-popover-head {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 14px;
}

.intl-kicker {
    margin: 0 0 2px;
    font-size: .64rem;
    font-weight: 800;
    letter-spacing: .14em;
    color: var(--c-international);
}

.intl-popover-head h2 {
    margin: 0;
    font-size: 1.05rem;
    font-weight: 800;
    color: var(--ink);
}

.intl-popover-close {
    width: 32px;
    height: 32px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, .55);
    color: var(--ink-soft);
    cursor: pointer;
}

.intl-popover-close:hover {
    background: #fff;
    color: var(--ink);
}

.intl-popover-section + .intl-popover-section {
    margin-top: 14px;
    padding-top: 14px;
    border-top: 1px solid rgba(28, 37, 65, .08);
}

.intl-panel-hint {
    margin: 0 0 10px;
    font-size: .72rem;
    font-weight: 700;
    color: var(--ink-soft);
}

.intl-sublist {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.intl-sub {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 6px 11px 6px 9px;
    border-radius: 999px;
    border: 1px solid rgba(28, 37, 65, .08);
    background: rgba(255, 255, 255, .62);
    font-size: .78rem;
    color: var(--ink-soft);
    cursor: pointer;
    user-select: none;
    transition: background .15s ease, color .15s ease, border-color .15s ease;
}

.intl-sub .chip-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--chip-color, var(--c-international));
    flex: none;
}

.intl-sub input {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.intl-sub:hover {
    border-color: color-mix(in srgb, var(--chip-color, var(--c-international)) 40%, transparent);
    color: var(--ink);
}

.intl-sub:has(input:checked) {
    background: color-mix(in srgb, var(--chip-color, var(--c-international)) 14%, #fff);
    border-color: color-mix(in srgb, var(--chip-color, var(--c-international)) 28%, transparent);
    color: var(--ink);
    font-weight: 650;
}

.intl-publisher-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    margin-bottom: 8px;
}

.intl-publisher-head .intl-panel-hint { margin: 0; }

.intl-publisher-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(148px, 1fr));
    gap: 6px;
}

.intl-publisher-grid label {
    display: flex;
    align-items: center;
    gap: 7px;
    padding: 7px 10px;
    border: 1px solid rgba(28, 37, 65, .08);
    border-radius: 10px;
    background: rgba(255, 255, 255, .5);
    font-size: .76rem;
    color: var(--ink-soft);
    cursor: pointer;
    user-select: none;
    transition: background .15s ease, border-color .15s ease, color .15s ease;
}

.intl-publisher-grid label:hover {
    background: rgba(255, 255, 255, .85);
    color: var(--ink);
}

.intl-publisher-grid input {
    width: 14px;
    height: 14px;
    accent-color: var(--c-international);
    cursor: pointer;
    flex: none;
}

.intl-publisher-grid label:has(input:checked) {
    background: color-mix(in srgb, var(--c-international) 10%, #fff);
    border-color: color-mix(in srgb, var(--c-international) 28%, transparent);
    color: var(--ink);
}

.intl-panel-actions {
    display: flex;
    gap: 10px;
}

.intl-panel-actions button {
    background: none;
    border: 0;
    padding: 0;
    font-size: .72rem;
    font-weight: 700;
    color: var(--c-international);
    cursor: pointer;
    font-family: inherit;
}

.intl-panel-actions button:hover {
    text-decoration: underline;
}

/* ---------- Results summary ---------- */

.results-summary {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 22px 0 0;
}

.summary-item {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: var(--surface);
    border: 1px solid var(--border-soft);
    border-radius: 999px;
    padding: 6px 12px;
    font-size: .82rem;
    color: var(--ink-soft);
}

.summary-item[data-source="civilica"] { --source-color: var(--c-civilica); }
.summary-item[data-source="magiran"] { --source-color: var(--c-magiran); }
.summary-item[data-source="noormags"] { --source-color: var(--c-noormags); }
.summary-item[data-source="ensani"] { --source-color: var(--c-ensani); }
.summary-item[data-source="international"] { --source-color: var(--c-international); }
.summary-item[data-source="openalex"] { --source-color: var(--c-openalex); }
.summary-item[data-source="arxiv"] { --source-color: var(--c-arxiv); }
.summary-item[data-source="europepmc"] { --source-color: var(--c-europepmc); }
.summary-item[data-source="pubmed"] { --source-color: var(--c-pubmed); }
.summary-item[data-source="clinicaltrials"] { --source-color: var(--c-clinicaltrials); }
.summary-item[data-source="doaj"] { --source-color: var(--c-doaj); }
.summary-item[data-source="plos"] { --source-color: var(--c-plos); }
.summary-item[data-source="dblp"] { --source-color: var(--c-dblp); }
.summary-item[data-source="hal"] { --source-color: var(--c-hal); }

.summary-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--source-color, var(--accent));
    flex: none;
}

.summary-item b {
    font-weight: 600;
    color: var(--ink);
}

.summary-item.is-error .summary-count { color: #a4302a; }

/* ---------- Year range chart ---------- */

.year-chart {
    margin: 12px 0 0;
    padding: 12px 12px 10px;
    border: 1px solid var(--border-soft);
    border-radius: 14px;
    background:
        linear-gradient(180deg, rgba(193, 144, 47, .06), transparent 42%),
        color-mix(in srgb, var(--paper) 55%, #fff);
}

.year-chart-head {
    display: flex;
    align-items: center;
    gap: 10px 14px;
    flex-wrap: wrap;
    margin-bottom: 8px;
}

.year-chart-readout {
    display: inline-flex;
    align-items: baseline;
    gap: 6px;
    font-size: .78rem;
    color: var(--ink-soft);
}

.year-chart-readout b {
    font-size: 1.02rem;
    font-weight: 800;
    color: var(--ink);
    font-variant-numeric: tabular-nums;
}

.year-chart-presets {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    margin-inline-start: auto;
}

.year-chart-presets button {
    font-family: inherit;
    font-size: .72rem;
    font-weight: 700;
    border: 1px solid var(--border);
    background: #fff;
    color: var(--ink-soft);
    border-radius: 999px;
    padding: 4px 10px;
    cursor: pointer;
}

.year-chart-presets button:hover,
.year-chart-presets button.is-on {
    border-color: var(--accent);
    color: var(--ink);
    background: color-mix(in srgb, var(--accent) 14%, #fff);
}

.year-chart-plot {
    position: relative;
    direction: ltr;
    padding: 4px 8px 0;
    user-select: none;
    touch-action: none;
}

.year-chart-bars {
    display: flex;
    align-items: flex-end;
    gap: 2px;
    height: 52px;
    pointer-events: none;
}

.year-chart-bars i {
    flex: 1;
    min-width: 0;
    border-radius: 2px 2px 0 0;
    background: color-mix(in srgb, var(--ink) 14%, #efe9db);
    opacity: .55;
}

.year-chart-bars i.is-in {
    background: linear-gradient(180deg, #e2c070, #c1902f);
    opacity: 1;
}

.year-chart-track {
    position: relative;
    height: 18px;
    margin-top: -9px;
}

.year-chart-range {
    position: absolute;
    top: 7px;
    height: 4px;
    border-radius: 999px;
    background: #c1902f;
    box-shadow: 0 0 0 1px rgba(193, 144, 47, .2);
}

.year-chart-track::before {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    top: 7px;
    height: 4px;
    border-radius: 999px;
    background: #e7e0cf;
}

.year-chart-handle {
    position: absolute;
    top: 1px;
    width: 16px;
    height: 16px;
    margin-left: -8px;
    border: 2px solid #fff;
    border-radius: 50%;
    background: #1c2541;
    box-shadow: 0 1px 4px rgba(28, 37, 65, .28);
    cursor: grab;
    z-index: 2;
    padding: 0;
}

.year-chart-handle.is-end {
    background: #c1902f;
}

.year-chart-handle:focus-visible {
    outline: 2px solid #c1902f;
    outline-offset: 2px;
}

.year-chart-handle.is-dragging {
    cursor: grabbing;
    transform: scale(1.12);
}

.year-chart-ticks {
    display: flex;
    justify-content: space-between;
    margin-top: 4px;
    color: #9a9483;
    font-size: .68rem;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
}

/* ---------- Status line ---------- */

.status,
.source-status {
    display: flex;
    align-items: center;
    margin-bottom: 12px;
    font-size: .85rem;
    color: var(--ink-soft);
}

.source-status.error { color: #a4302a; }

.source-status.loading::before {
    content: '';
    width: 13px;
    height: 13px;
    flex: none;
    border-radius: 50%;
    border: 2px solid var(--border);
    border-top-color: var(--accent);
    margin-inline-end: 8px;
    animation: spin .7s linear infinite;
}

/* ---------- Empty state ---------- */

.empty-hint {
    margin-top: 36px;
    text-align: center;
    color: var(--ink-soft);
    padding: 46px 20px;
}

.empty-hint svg { color: var(--border); }

.empty-hint p {
    margin: 14px 0 0;
    font-size: .96rem;
}

.empty-hint .empty-sub {
    margin-top: 6px;
    font-size: .85rem;
    color: #a29c87;
}

/* ---------- Source sections & results ---------- */

.source-section { margin-top: 34px; }
.source-section:first-child { margin-top: 0; }

.source-section[data-source="civilica"] { --source-color: var(--c-civilica); }
.source-section[data-source="magiran"] { --source-color: var(--c-magiran); }
.source-section[data-source="noormags"] { --source-color: var(--c-noormags); }
.source-section[data-source="ensani"] { --source-color: var(--c-ensani); }
.source-section[data-source="international"] { --source-color: var(--c-international); }
.source-section[data-source="openalex"] { --source-color: var(--c-openalex); }
.source-section[data-source="arxiv"] { --source-color: var(--c-arxiv); }
.source-section[data-source="europepmc"] { --source-color: var(--c-europepmc); }
.source-section[data-source="pubmed"] { --source-color: var(--c-pubmed); }
.source-section[data-source="clinicaltrials"] { --source-color: var(--c-clinicaltrials); }
.source-section[data-source="doaj"] { --source-color: var(--c-doaj); }
.source-section[data-source="plos"] { --source-color: var(--c-plos); }
.source-section[data-source="dblp"] { --source-color: var(--c-dblp); }
.source-section[data-source="hal"] { --source-color: var(--c-hal); }

.source-header {
    display: flex;
    align-items: center;
    gap: 14px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--source-color, var(--accent));
    margin-bottom: 14px;
}

.source-header h2 {
    display: flex;
    align-items: center;
    gap: 9px;
    margin: 0;
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--ink);
}

.source-header h2::before {
    content: '';
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: var(--source-color, var(--accent));
    flex: none;
}

.source-outbound {
    font-size: .82rem;
    color: var(--ink-soft);
    text-decoration: none;
    margin-inline-start: auto;
    white-space: nowrap;
}

.source-outbound:hover { color: var(--accent-dark); text-decoration: underline; }

.results-grid {
    margin-top: 20px;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.source-results {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.source-section.is-page-loading .source-results {
    position: relative;
    opacity: .55;
    pointer-events: none;
}

.source-section.is-page-loading .source-results::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(255, 255, 255, .15), rgba(255, 255, 255, .45));
    border-radius: var(--radius-sm);
    pointer-events: none;
}

.source-section.is-page-loading .result-card,
.source-section.is-page-swap .result-card {
    animation: none;
    transform: none;
}

.source-section.is-page-loading .source-pagination {
    opacity: .65;
    pointer-events: none;
}

.result-card {
    position: relative;
    display: flex;
    flex-direction: row-reverse;
    align-items: stretch;
    background: var(--surface);
    border: 1px solid var(--border-soft);
    border-inline-start: 3px solid var(--source-color, var(--accent));
    border-radius: var(--radius-sm);
    padding: 16px 20px;
    box-shadow: var(--shadow-sm);
    transition: transform .15s ease, box-shadow .15s ease;
}

.result-card.has-badge {
    padding-inline-end: 48px;
}

.result-card__body {
    flex: 1;
    min-width: 0;
}

.result-badge {
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 34px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 8px 4px;
    writing-mode: vertical-rl;
    text-orientation: mixed;
    transform: rotate(180deg);
    font-size: .62rem;
    font-weight: 800;
    line-height: 1.25;
    letter-spacing: .03em;
    text-align: center;
    border-radius: var(--radius-sm) 0 0 var(--radius-sm);
    border: 1px solid transparent;
    border-right: 0;
    user-select: none;
}

.result-badge--open-access { background: #e6f5ec; color: #156636; border-color: #b8dfc8; }
.result-badge--fulltext { background: #e4f4f2; color: #0e6655; border-color: #abd9d2; }
.result-badge--preprint { background: #f0ebf8; color: #5a3d8a; border-color: #d4c4ec; }
.result-badge--journal { background: #e8f0f8; color: #1e4a72; border-color: #c5d9ec; }
.result-badge--conference { background: #eceef8; color: #3a4588; border-color: #c8cce8; }
.result-badge--thesis { background: #f8eaf0; color: #7a2d52; border-color: #e8c4d4; }
.result-badge--book { background: #f5efe4; color: #6b4e1a; border-color: #e0d0b0; }
.result-badge--chapter { background: #f3eede; color: #5c4a28; border-color: #ddd0b4; }
.result-badge--review { background: #e5f2f6; color: #1a6178; border-color: #b8dce8; }
.result-badge--report { background: #eef0f3; color: #4a5060; border-color: #d0d4dc; }
.result-badge--editorial { background: #faf3e3; color: #7a5a12; border-color: #efe0bd; }
.result-badge--letter { background: #f0f1f3; color: #505868; border-color: #d4d8de; }
.result-badge--case { background: #fbeee8; color: #8f3828; border-color: #ecc8bc; }
.result-badge--clinical { background: #e6f2f6; color: #145a72; border-color: #b8d9e6; }
.result-badge--trial-recruiting { background: #e8f6ef; color: #1a7048; border-color: #bfe6d0; }
.result-badge--trial-completed { background: #eef0f2; color: #4a5568; border-color: #d0d6de; }
.result-badge--trial-stopped { background: #fceeea; color: #9a3b28; border-color: #ecc8bc; }
.result-badge--poster { background: #fceef3; color: #8a2850; border-color: #ecc4d4; }
.result-badge--reference { background: #f2f0ec; color: #5c5648; border-color: #dcd6c8; }
.result-badge--paratext { background: #f0f2f4; color: #4a5568; border-color: #d4dae0; }
.result-badge--artifact { background: #edf2f8; color: #2a5080; border-color: #c4d4e8; }
.result-badge--other { background: #f5f0e6; color: #6b5420; border-color: #e4d8c0; }

.result-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

@media (prefers-reduced-motion: no-preference) {
    .result-card {
        animation: cardIn .35s ease both;
        animation-delay: calc(var(--i, 0) * 40ms);
    }
}

@keyframes cardIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

.result-title {
    margin: 0 0 10px;
    font-size: 1.03rem;
    font-weight: 700;
    line-height: 1.6;
}

.result-title a {
    color: var(--ink);
    text-decoration: none;
}

.result-title a:hover { color: var(--accent-dark); text-decoration: underline; }

.result-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 18px;
    font-size: .85rem;
    color: var(--ink-soft);
}

.result-meta span {
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

.result-meta svg { flex: none; color: #a8a289; }

/* ---------- Pagination ---------- */

.pagination,
.source-pagination {
    margin-top: 22px;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 6px;
}

.pagination button,
.source-pagination button {
    background: var(--surface);
    border: 1.5px solid var(--border);
    border-radius: 8px;
    font-family: inherit;
    font-size: .88rem;
    color: var(--ink-soft);
    cursor: pointer;
    transition: border-color .15s ease, color .15s ease, background .15s ease;
}

.page-nav { padding: 8px 16px; }

.page-num {
    min-width: 36px;
    padding: 8px 6px;
    text-align: center;
}

.page-num.is-current {
    background: var(--source-color, var(--accent));
    border-color: var(--source-color, var(--accent));
    color: #fff;
    font-weight: 600;
    cursor: default;
}

.page-ellipsis {
    padding: 0 4px;
    color: var(--ink-soft);
    align-self: center;
    user-select: none;
}

.pagination button:hover:not(:disabled),
.source-pagination button:hover:not(:disabled) { border-color: var(--accent); color: var(--accent-dark); }

.pagination button:disabled,
.source-pagination button:disabled { opacity: .45; cursor: default; }

.page-num.is-current:disabled { opacity: 1; }

.pagination .page-info,
.source-pagination .page-info { color: var(--ink-soft); font-size: .87rem; }

/* ---------- Footer ---------- */

.site-footer {
    text-align: center;
    color: var(--ink-soft);
    font-size: .83rem;
    padding: 28px 16px 36px;
    margin-top: 10px;
    border-top: 1px solid var(--border-soft);
}

.site-footer a { color: var(--accent-dark); }

.site-footer-links {
    margin: 10px 0 0;
}

.site-footer-links a {
    font-weight: 600;
    text-decoration: none;
}

.site-footer-links a:hover {
    text-decoration: underline;
}

.site-version {
    margin: 8px 0 0;
    font-size: .75rem;
    color: var(--ink-soft);
    opacity: .8;
}

.site-journal-btn {
    position: fixed;
    z-index: 25;
    bottom: 18px;
    inset-inline-start: 18px;
    display: inline-flex;
    align-items: center;
    font-family: inherit;
    font-size: .78rem;
    font-weight: 700;
    color: #f4edd8;
    text-decoration: none;
    padding: 9px 14px;
    border-radius: 999px;
    background: #12182b;
    border: 1px solid rgba(193, 144, 47, .45);
    box-shadow: 0 4px 16px rgba(18, 24, 43, .25);
    transition: background .15s, transform .15s, box-shadow .15s;
}

.site-journal-btn:hover {
    background: #1c2541;
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(18, 24, 43, .3);
}

@media (max-width: 768px) {
    body:has(.ad-mobile-sticky) .site-journal-btn {
        bottom: 64px;
    }
}

/* ---------- Responsive ---------- */

@media (max-width: 720px) {
    .year-chart-head {
        align-items: flex-start;
    }

    .year-chart-presets {
        margin-inline-start: 0;
        width: 100%;
    }
}

@media (max-width: 560px) {
    .site-hero { padding: 44px 18px 48px; }
    .search-box { padding-inline-start: 6px; }
    .search-box input[type="search"] { font-size: 1rem; }
    .search-box button { padding: 0 16px; }
    .search-card-wrap { margin-top: -24px; padding: 12px; }
    .live-hub { flex-wrap: wrap; gap: 8px 10px; padding: 9px 10px; }
    .live-hub-nodes { max-width: 100%; justify-content: flex-start; }
    .search-toolbar { gap: 8px 10px; padding-top: 0; }
    .source-header { flex-wrap: wrap; }
    .source-outbound { margin-inline-start: 0; }

    .ad-slot-between-sections {
        margin: 16px 0;
    }

    .ad-slot-inline {
        margin: 8px 0;
    }

    .ad-native {
        flex-direction: column;
    }

    .ad-native-img {
        max-height: 140px;
    }
}