:root {
    --color-primary: #1a73e8;
    --color-primary-dark: #1557b0;
    --color-danger: #d93025;
    --color-warning: #f9ab00;
    --color-success: #188038;
    --color-bg: #ffffff;
    --color-bg-alt: #f8f9fa;
    --color-bg-header: #0f1b2d;
    --color-text: #202124;
    --color-text-light: #5f6368;
    --color-border: #e0e0e0;
    --color-card: #ffffff;
    --shadow: 0 1px 3px rgba(0,0,0,.1), 0 1px 2px rgba(0,0,0,.06);
    --shadow-lg: 0 4px 12px rgba(0,0,0,.15);
    --radius: 8px;
    --radius-sm: 4px;
    --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --container: 1200px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
    font-family: var(--font);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text);
    background: var(--color-bg);
    -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; }
a { color: var(--color-primary); text-decoration: none; }
a:hover { color: var(--color-primary-dark); text-decoration: underline; }
h1, h2, h3, h4 { line-height: 1.3; margin-bottom: .5rem; font-weight: 600; }
h1 { font-size: clamp(1.8rem, 4vw, 2.5rem); }
h2 { font-size: clamp(1.4rem, 3vw, 1.8rem); }
h3 { font-size: 1.15rem; }
p { margin-bottom: 1rem; }

.container {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 1rem;
}
.container-narrow { max-width: 800px; }

.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;
}

.skip-link {
    position: absolute; top: -40px; left: 16px;
    background: var(--color-primary); color: #fff;
    padding: 8px 16px; z-index: 1000; border-radius: var(--radius-sm);
    transition: top .2s;
}
.skip-link:focus { top: 8px; }

/* Header */
.site-header {
    background: var(--color-bg-header);
    color: #fff;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow);
}
.site-header .container {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    min-height: 64px;
}
.logo {
    display: flex;
    align-items: center;
    gap: .5rem;
    color: #fff;
    font-size: 1.2rem;
    font-weight: 700;
    white-space: nowrap;
}
.logo:hover { text-decoration: none; color: #fff; opacity: .9; }
.logo-accent { color: #8ab4f8; }
.logo img { width: 40px; height: 40px; flex-shrink: 0; }

.main-nav { flex: 1; }
.nav-list {
    display: flex;
    list-style: none;
    gap: 1rem;
}
.nav-list a {
    color: #d8dee8;
    padding: .5rem .75rem;
    border-radius: var(--radius-sm);
    transition: color .2s, background .2s;
    font-size: .95rem;
}
.nav-list a:hover { color: #fff; text-decoration: none; background: rgba(255,255,255,.08); }
.nav-list a.active { color: #8ab4f8; background: rgba(26,115,232,.15); }

.nav-toggle {
    display: none;
    background: none; border: none; cursor: pointer;
    padding: 10px;
}
.nav-toggle span {
    display: block; width: 24px; height: 2px;
    background: #fff; margin-bottom: 5px;
    transition: transform .2s, opacity .2s;
}
.nav-toggle span:last-child { margin-bottom: 0; }

.search-form {
    display: flex;
    align-items: center;
    font-size: 0;
}
.search-form input {
    width: 180px;
    padding: .5rem .75rem;
    border: none;
    border-radius: var(--radius-sm) 0 0 var(--radius-sm);
    background: rgba(255,255,255,.1);
    color: #fff;
    outline: none;
    font-size: .9rem;
}
.search-form input::placeholder { color: #9aa5b1; }
.search-form input:focus { background: rgba(255,255,255,.18); }
.search-form button {
    background: var(--color-primary);
    border: none;
    color: #fff;
    padding: .5rem .75rem;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    cursor: pointer;
    display: flex;
    align-items: center;
    transition: background .2s;
}
.search-form button:hover { background: var(--color-primary-dark); }

/* Buttons */
.btn {
    display: inline-block;
    padding: .6rem 1.2rem;
    border-radius: var(--radius-sm);
    font-size: .95rem;
    font-weight: 500;
    cursor: pointer;
    transition: all .2s;
    border: 1px solid transparent;
    text-align: center;
    line-height: 1.4;
}
.btn:hover { text-decoration: none; }
.btn-primary { background: var(--color-primary); color: #fff; }
.btn-primary:hover { background: var(--color-primary-dark); color: #fff; }
.btn-outline { background: #fff; color: var(--color-primary); border-color: var(--color-primary); }
.btn-outline:hover { background: var(--color-primary); color: #fff; }

/* Hero */
.hero {
    background: linear-gradient(135deg, #0f1b2d 0%, #1a3a5c 60%, #1557b0 100%);
    color: #fff;
    padding: 4rem 0 3rem;
    text-align: center;
}
.hero h1 { font-size: clamp(1.8rem, 4.5vw, 2.75rem); margin-bottom: 1rem; }
.hero p {
    font-size: 1.1rem;
    max-width: 640px;
    margin: 0 auto 2rem;
    color: #c8d1dc;
}
.hero-stats {
    margin-top: 2rem;
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
    font-size: .9rem;
    color: #9aa5b1;
}
.hero-stats span::before { content: ""; display: inline-block; width: 8px; height: 8px; border-radius: 50%; background: #8ab4f8; margin-right: .5rem; }

.hero-search {
    max-width: 560px;
    margin: 0 auto;
    display: flex;
}
.hero-search input {
    flex: 1;
    padding: .8rem 1rem;
    border: none;
    border-radius: var(--radius) 0 0 var(--radius);
    font-size: 1rem;
    outline: none;
}
.hero-search button {
    padding: .8rem 1.8rem;
    background: var(--color-primary);
    border: none;
    color: #fff;
    border-radius: 0 var(--radius) var(--radius) 0;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background .2s;
}
.hero-search button:hover { background: var(--color-primary-dark); }

/* Sections */
.section { padding: 3rem 0; }
.section + .section { padding-top: 0; }
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    gap: 1rem;
}
.categories-overview { background: var(--color-bg-alt); }

/* Category cards */
.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 1rem;
}
.category-card {
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 1.25rem;
    transition: transform .2s, box-shadow .2s;
    color: var(--color-text);
    position: relative;
}
.category-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
    text-decoration: none;
    color: var(--color-text);
}
.category-count {
    position: absolute;
    top: 1rem; right: 1rem;
    background: var(--color-primary);
    color: #fff;
    font-size: .8rem;
    font-weight: 600;
    padding: .15rem .5rem;
    border-radius: 999px;
}
.category-card h3 { font-size: 1.05rem; color: var(--color-primary); }
.category-card p { font-size: .875rem; color: var(--color-text-light); margin-bottom: 0; }

/* Malware cards */
.malware-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.25rem;
}
.malware-card {
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 1.25rem;
    transition: transform .2s, box-shadow .2s;
    display: flex;
    flex-direction: column;
    gap: .75rem;
}
.malware-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); }
.malware-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.malware-card h2, .malware-card h3 { margin-bottom: 0; font-size: 1.1rem; }
.malware-card h2 a, .malware-card h3 a { color: var(--color-text); }
.malware-card h2 a:hover, .malware-card h3 a:hover { color: var(--color-primary); }
.malware-card p { font-size: .9rem; color: var(--color-text-light); margin-bottom: 0; flex: 1; }
.malware-type {
    font-size: .75rem;
    text-transform: uppercase;
    letter-spacing: .5px;
    color: var(--color-text-light);
    background: var(--color-bg-alt);
    padding: .2rem .5rem;
    border-radius: var(--radius-sm);
}
.malware-meta {
    display: flex;
    gap: 1rem;
    font-size: .8rem;
    color: var(--color-text-light);
    flex-wrap: wrap;
    border-top: 1px solid var(--color-border);
    padding-top: .5rem;
}

/* Badges */
.badge {
    display: inline-block;
    font-size: .75rem;
    font-weight: 600;
    padding: .25rem .6rem;
    border-radius: 999px;
    white-space: nowrap;
}
.badge-critical { background: #d93025; color: #fff; }
.badge-high { background: #ea4335; color: #fff; }
.badge-medium { background: #f9ab00; color: #202124; }
.badge-low { background: #fbbc04; color: #202124; }
.badge-info { background: #e8f0fe; color: #1557b0; }

/* Guides */
.guides-list { display: flex; flex-direction: column; gap: .75rem; }
.guide-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.25rem;
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    color: var(--color-text);
    transition: border-color .2s, box-shadow .2s;
}
.guide-item:hover {
    text-decoration: none;
    border-color: var(--color-primary);
    box-shadow: var(--shadow);
    color: var(--color-text);
}
.guide-platform {
    font-size: .8rem;
    font-weight: 600;
    background: #e8f0fe;
    color: var(--color-primary);
    padding: .25rem .6rem;
    border-radius: var(--radius-sm);
    min-width: 80px;
    text-align: center;
}
.guide-title { flex: 1; font-weight: 500; }
.guide-difficulty { font-size: .8rem; color: var(--color-text-light); }

.guides-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.25rem;
}
.guide-full-card {
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 1.5rem;
    color: var(--color-text);
    transition: transform .2s, box-shadow .2s;
}
.guide-full-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
    text-decoration: none;
    color: var(--color-text);
}
.guide-badges { margin: .75rem 0; display: flex; gap: .5rem; flex-wrap: wrap; }

/* News */
.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.25rem;
}
.news-card {
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 1.25rem;
    display: flex;
    flex-direction: column;
    gap: .5rem;
}
.news-card time, .news-full-card time {
    font-size: .8rem;
    color: var(--color-text-light);
}
.news-card h3 { margin-bottom: 0; font-size: 1.05rem; }
.news-card p { font-size: .9rem; color: var(--color-text-light); margin-bottom: 0; flex: 1; }
.news-source {
    font-size: .75rem;
    color: var(--color-primary);
    background: #e8f0fe;
    padding: .2rem .5rem;
    border-radius: var(--radius-sm);
    align-self: flex-start;
}

.news-list { display: flex; flex-direction: column; gap: 1rem; }
.news-full-card {
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 1.5rem;
}
.news-full-card h2 { margin-bottom: .5rem; }
.news-meta { display: flex; gap: 1rem; font-size: .8rem; color: var(--color-text-light); }

.news-detail-meta {
    display: flex;
    gap: 1.5rem;
    color: #9aa5b1;
    font-size: .9rem;
    flex-wrap: wrap;
}
.news-summary {
    background: var(--color-bg-alt);
    border-left: 4px solid var(--color-primary);
    padding: 1rem 1.25rem;
    margin-bottom: 1.5rem;
    border-radius: 0 var(--radius) var(--radius) 0;
}
.news-body { font-size: 1.05rem; }
.news-source-link { margin-top: 2rem; }

/* Page header */
.page-header {
    background: var(--color-bg-alt);
    border-bottom: 1px solid var(--color-border);
    padding: 2.5rem 0;
}
.page-header h1 { margin-bottom: .5rem; }
.page-header p { color: var(--color-text-light); max-width: 700px; margin-bottom: 0; }
.page-header-malware { background: linear-gradient(135deg, #f8f9fa, #e8f0fe); }
.page-header-prevention { background: linear-gradient(135deg, #f8f9fa, #e6f4ea); }

.breadcrumb { font-size: .85rem; color: var(--color-text-light); margin-bottom: 1rem; }
.breadcrumb a { color: var(--color-text-light); }
.breadcrumb a:hover { color: var(--color-primary); }

.detail-header { display: flex; flex-direction: column; gap: .75rem; }
.detail-header h1 { margin-bottom: 0; }
.detail-badges { display: flex; gap: .5rem; flex-wrap: wrap; }

/* Detail page */
.detail-content { padding-top: 2.5rem; }
.detail-section { margin-bottom: 2rem; }
.detail-section h2 { color: var(--color-primary); border-bottom: 2px solid var(--color-border); padding-bottom: .5rem; margin-bottom: 1rem; }
.detail-aliases, .detail-family {
    background: var(--color-bg-alt);
    padding: .75rem 1rem;
    border-radius: var(--radius);
    margin-bottom: 1.5rem;
    font-size: .95rem;
}
.prevention-box {
    background: #e6f4ea;
    border: 1px solid #a8dab5;
    border-radius: var(--radius);
    padding: 1.5rem;
}
.prevention-box h2 { color: var(--color-success); border-color: #a8dab5; }
.detail-meta {
    background: var(--color-bg-alt);
    padding: 1rem 1.25rem;
    border-radius: var(--radius);
    font-size: .9rem;
    margin: 2rem 0;
}
.detail-meta p { margin-bottom: .25rem; }

.removal-steps { padding: 1.5rem; background: #fffbe8; border: 1px solid #fde293; border-radius: var(--radius); }
.removal-steps h2 { color: var(--color-warning); border-color: #fde293; }

/* Filter */
.filter-bar {
    display: flex;
    gap: .5rem;
    flex-wrap: wrap;
    margin-bottom: 2rem;
}
.filter-btn {
    padding: .4rem .9rem;
    border-radius: 999px;
    border: 1px solid var(--color-border);
    background: #fff;
    color: var(--color-text-light);
    font-size: .85rem;
    transition: all .2s;
}
.filter-btn:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    text-decoration: none;
}
.filter-btn.active {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    margin-top: 2.5rem;
}
.page-info { color: var(--color-text-light); font-size: .9rem; }

/* Search */
.search-form-large {
    display: flex;
    gap: .5rem;
    margin-bottom: 2rem;
}
.search-form-large input {
    flex: 1;
    padding: .75rem 1rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    font-size: 1rem;
    outline: none;
    transition: border-color .2s;
}
.search-form-large input:focus { border-color: var(--color-primary); }

.search-results { display: flex; flex-direction: column; gap: 1rem; }
.search-result {
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 1.25rem 1.5rem;
}
.search-result-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    margin-bottom: .5rem;
}
.search-result-header h2 { margin-bottom: 0; font-size: 1.15rem; }

/* Empty state */
.empty-state {
    text-align: center;
    padding: 4rem 1rem;
    color: var(--color-text-light);
}
.empty-state h2 { margin: 1rem 0; color: var(--color-text); }
.error-actions { display: flex; gap: .75rem; justify-content: center; flex-wrap: wrap; margin-top: 2rem; }

/* CTA */
.cta-prevention {
    background: linear-gradient(135deg, #0f1b2d, #1a3a5c);
    color: #fff;
    text-align: center;
    padding: 3.5rem 0;
}
.cta-prevention h2 { margin-bottom: .75rem; }
.cta-prevention p { color: #c8d1dc; max-width: 600px; margin: 0 auto 2rem; }

/* Prevention */
.prevention-tips { display: flex; flex-direction: column; gap: 1.5rem; }
.prevention-tip {
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 1.5rem;
}
.prevention-tip h2 { color: var(--color-success); font-size: 1.2rem; }
.prevention-tip p { margin-bottom: 0; }

/* Legal */
.legal-page { font-size: .95rem; }
.legal-page h2 { color: var(--color-primary); margin-top: 2rem; font-size: 1.3rem; }
.legal-page h3 { margin-top: 1.5rem; }
.legal-page ul { margin: 0 0 1rem 1.5rem; }
.cookie-table {
    width: 100%;
    border-collapse: collapse;
    margin: 1rem 0;
    font-size: .9rem;
}
.cookie-table th, .cookie-table td {
    border: 1px solid var(--color-border);
    padding: .6rem .75rem;
    text-align: left;
}
.cookie-table th { background: var(--color-bg-alt); font-weight: 600; }
.cookie-table code { background: var(--color-bg-alt); padding: .15rem .35rem; border-radius: var(--radius-sm); font-size: .85rem; }

/* Cookie banner */
.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--color-bg-header);
    color: #fff;
    z-index: 1000;
    padding: 1rem 0;
    box-shadow: 0 -4px 12px rgba(0,0,0,.2);
}
.cookie-inner {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 1rem;
    display: flex;
    align-items: center;
    gap: 1.5rem;
    flex-wrap: wrap;
}
.cookie-text { flex: 1; min-width: 280px; }
.cookie-text strong { display: block; margin-bottom: .25rem; }
.cookie-text p { margin: 0; font-size: .875rem; color: #c8d1dc; }
.cookie-text a { color: #8ab4f8; }
.cookie-actions { display: flex; gap: .75rem; }

/* Footer */
.site-footer {
    background: var(--color-bg-header);
    color: #9aa5b1;
    padding: 3rem 0 1.5rem;
    margin-top: 3rem;
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}
.footer-col h3 {
    color: #fff;
    font-size: 1rem;
    margin-bottom: 1rem;
}
.footer-col p { font-size: .875rem; }
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: .5rem; }
.footer-col a { color: #9aa5b1; font-size: .875rem; }
.footer-col a:hover { color: #fff; text-decoration: none; }
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,.1);
    padding-top: 1.5rem;
    text-align: center;
    font-size: .8rem;
}
.footer-bottom p { margin-bottom: 0; }
.threat-legend { display: flex; flex-direction: column; gap: .5rem; }

/* Admin */
.admin-login { min-height: 60vh; display: flex; align-items: center; }
.login-form {
    max-width: 400px;
    margin: 0 auto;
    width: 100%;
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 2rem;
}
.login-form h1 { text-align: center; margin-bottom: 1.5rem; }

.form-group { margin-bottom: 1.25rem; }
.form-group label { display: block; font-weight: 500; margin-bottom: .35rem; font-size: .9rem; }
.form-group input, .form-group textarea, .form-group select {
    width: 100%;
    padding: .6rem .75rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: .95rem;
    font-family: var(--font);
    outline: none;
    transition: border-color .2s;
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
    border-color: var(--color-primary);
}
.form-group textarea { min-height: 120px; resize: vertical; }
.form-checkbox { display: flex; align-items: center; gap: .5rem; }
.form-checkbox input { width: auto; }

.alert {
    padding: .75rem 1rem;
    border-radius: var(--radius-sm);
    margin-bottom: 1.5rem;
    font-size: .9rem;
}
.alert-success { background: #e6f4ea; color: #188038; border: 1px solid #a8dab5; }
.alert-error { background: #fce8e6; color: #d93025; border: 1px solid #f5c6c2; }

/* Admin dashboard */
.admin-dashboard {
    padding: 2rem 0;
}
.stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}
.stat-card {
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 1.25rem;
    text-align: center;
}
.stat-card .stat-value { font-size: 2rem; font-weight: 700; color: var(--color-primary); }
.stat-card .stat-label { font-size: .875rem; color: var(--color-text-light); }

.data-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    overflow: hidden;
    font-size: .9rem;
}
.data-table th, .data-table td {
    padding: .75rem 1rem;
    text-align: left;
    border-bottom: 1px solid var(--color-border);
}
.data-table th { background: var(--color-bg-alt); font-weight: 600; }
.data-table tr:last-child td { border-bottom: none; }
.data-table tr:hover { background: var(--color-bg-alt); }

.table-actions { display: flex; gap: .5rem; }
.table-actions a {
    font-size: .8rem;
    padding: .25rem .5rem;
    border-radius: var(--radius-sm);
    background: #e8f0fe;
    color: var(--color-primary);
}
.table-actions a.delete { background: #fce8e6; color: #d93025; }

/* Responsive */
@media (max-width: 992px) {
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .search-form { display: none; }
}

@media (max-width: 768px) {
    .site-header .container { flex-wrap: wrap; padding: .75rem 1rem; }
    .nav-toggle { display: block; }
    .nav-list {
        display: none;
        flex-direction: column;
        width: 100%;
        padding: 1rem 0;
        gap: .25rem;
    }
    .nav-list.open { display: flex; }
    .main-nav { order: 3; flex-basis: 100%; }
    .hero { padding: 3rem 0 2.5rem; }
    .section-header { flex-direction: column; align-items: flex-start; }
    .footer-grid { grid-template-columns: 1fr; }
    .cookie-inner { flex-direction: column; align-items: stretch; }
}