/* Linux Security Page Styles */
/* Bitdefender Theme: Red #ED1C24 */

:root {
    --primary-color: #ED1C24;
    --primary-dark: #c41820;
    --primary-light: #ff4d52;
    --accent-color: #ff6b6b;
    --bg-dark: #0a0a0f;
    --bg-section: #12121a;
    --bg-card: rgba(255, 255, 255, 0.03);
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --text-muted: rgba(255, 255, 255, 0.5);
    --border-color: rgba(255, 255, 255, 0.1);
    --gradient-primary: linear-gradient(135deg, #ED1C24 0%, #ff4d52 100%);
    --gradient-dark: linear-gradient(180deg, #0a0a0f 0%, #12121a 100%);
}

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

body {
    font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Navigation Buttons */
.nav-buttons {
    position: fixed;
    right: 2rem;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    z-index: 1000;
}

.nav-btn {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: rgba(237, 28, 36, 0.2);
    border: 1px solid rgba(237, 28, 36, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    opacity: 0;
    transform: translateX(20px);
}

.nav-btn.visible {
    opacity: 1;
    transform: translateX(0);
}

.nav-btn:hover {
    background: var(--primary-color);
    transform: scale(1.1);
}

.nav-btn i {
    font-size: 1.25rem;
    color: var(--text-primary);
}

/* Header */
header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 10, 15, 0.9);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
}

nav {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
}

.logo-icon {
    height: 24px;
    width: auto;
}

nav ul {
    display: flex;
    gap: 2rem;
    list-style: none;
}

nav ul li a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    transition: color 0.3s ease;
}

nav ul li a:hover {
    color: var(--primary-color);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 8rem 2rem 4rem;
    background: var(--gradient-dark);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 30% 40%, rgba(237, 28, 36, 0.15) 0%, transparent 50%),
                radial-gradient(circle at 70% 60%, rgba(237, 28, 36, 0.1) 0%, transparent 40%);
    pointer-events: none;
}

.hero-content {
    max-width: 900px;
    text-align: center;
    position: relative;
    z-index: 1;
}

.product-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(237, 28, 36, 0.15);
    border: 1px solid rgba(237, 28, 36, 0.3);
    padding: 0.5rem 1.25rem;
    border-radius: 30px;
    margin-bottom: 2rem;
}

.product-badge i {
    color: var(--primary-color);
    font-size: 1.1rem;
}

.product-badge span {
    color: var(--primary-color);
    font-weight: 600;
    font-size: 0.9rem;
}

.main-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1.5rem;
}

.highlight {
    color: var(--primary-color);
}

.subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
    line-height: 1.8;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 3rem;
}

.stat-item {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary-color);
}

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

.hero-brand {
    margin-top: 3rem;
    padding: 1.5rem 3rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
}

.brand-name {
    font-size: 2rem;
    font-weight: 800;
    color: var(--primary-color);
    letter-spacing: 0.15em;
}

.brand-product {
    font-size: 1.1rem;
    color: var(--text-secondary);
    font-weight: 500;
    letter-spacing: 0.1em;
}

/* Content Sections */
.content-section {
    padding: 6rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.content-section h2 {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 1rem;
}

.section-intro {
    text-align: center;
    color: var(--text-secondary);
    font-size: 1.1rem;
    max-width: 700px;
    margin: 0 auto 3rem;
}

.section-dark {
    background: var(--bg-section);
    max-width: 100%;
    padding-left: calc((100% - 1200px) / 2 + 2rem);
    padding-right: calc((100% - 1200px) / 2 + 2rem);
}

.section-alt {
    background: linear-gradient(180deg, var(--bg-dark) 0%, var(--bg-section) 100%);
    max-width: 100%;
    padding-left: calc((100% - 1200px) / 2 + 2rem);
    padding-right: calc((100% - 1200px) / 2 + 2rem);
}

/* Checklist */
.checklist-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.checklist-item {
    display: flex;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    transition: all 0.3s ease;
}

.checklist-item:hover {
    border-color: var(--primary-color);
    transform: translateY(-3px);
}

.check-icon {
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.check-icon i {
    font-size: 1.5rem;
    color: white;
}

.check-content h4 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.check-content p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.alert-box {
    display: flex;
    gap: 1rem;
    padding: 1.5rem;
    background: rgba(237, 28, 36, 0.1);
    border: 1px solid rgba(237, 28, 36, 0.3);
    border-radius: 12px;
    align-items: flex-start;
}

.alert-box i {
    font-size: 1.5rem;
    color: var(--primary-color);
    flex-shrink: 0;
}

.alert-box p {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* News Grid */
.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.news-card {
    padding: 1.5rem;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    transition: all 0.3s ease;
}

.news-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-3px);
}

.news-icon {
    width: 48px;
    height: 48px;
    background: rgba(237, 28, 36, 0.15);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
}

.news-icon i {
    font-size: 1.5rem;
    color: var(--primary-color);
}

.news-card h4 {
    font-size: 1rem;
    margin-bottom: 0.5rem;
}

.news-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.6;
}

.threat-summary {
    background: rgba(237, 28, 36, 0.1);
    border: 1px solid rgba(237, 28, 36, 0.3);
    border-radius: 12px;
    padding: 1.5rem;
    text-align: center;
}

.threat-summary h4 {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.summary-tags {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.75rem;
}

.tag {
    background: rgba(255, 255, 255, 0.1);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* Why Bitdefender Section */
.section-why {
    background: var(--bg-section);
    max-width: 100%;
    padding-left: calc((100% - 1200px) / 2 + 2rem);
    padding-right: calc((100% - 1200px) / 2 + 2rem);
}

.partners-image {
    margin-bottom: 3rem;
    text-align: center;
}

.partners-image img {
    max-width: 100%;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

.why-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.why-card {
    padding: 2rem;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    text-align: center;
    transition: all 0.3s ease;
}

.why-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-5px);
}

.why-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.why-card h4 {
    font-size: 1.1rem;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.why-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* Compare Table */
.compare-table-wrapper {
    overflow-x: auto;
    margin-bottom: 2rem;
}

.compare-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--bg-card);
    border-radius: 12px;
    overflow: hidden;
}

.compare-table th,
.compare-table td {
    padding: 1rem 1.5rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.compare-table th {
    background: rgba(255, 255, 255, 0.05);
    font-weight: 600;
    color: var(--text-primary);
}

.compare-table .highlight-col {
    background: rgba(237, 28, 36, 0.1);
}

.compare-table th.highlight-col {
    background: rgba(237, 28, 36, 0.2);
    color: var(--primary-color);
}

.compare-table td {
    color: var(--text-secondary);
}

.compare-table i.good {
    color: #22c55e;
    margin-right: 0.5rem;
}

.compare-table i.ok {
    color: #eab308;
    margin-right: 0.5rem;
}

.compare-table i.neutral {
    color: var(--text-muted);
    margin-right: 0.5rem;
}

.trust-badge {
    display: flex;
    gap: 1.5rem;
    padding: 2rem;
    background: var(--gradient-primary);
    border-radius: 16px;
    align-items: center;
}

.trust-icon {
    width: 80px;
    height: 80px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.trust-icon i {
    font-size: 2.5rem;
    color: white;
}

.trust-content h4 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

.trust-content p {
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.7;
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.feature-card {
    padding: 2rem;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    text-align: center;
    transition: all 0.3s ease;
}

.feature-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-5px);
}

.feature-icon {
    width: 64px;
    height: 64px;
    background: rgba(237, 28, 36, 0.15);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.feature-icon i {
    font-size: 1.75rem;
    color: var(--primary-color);
}

.feature-card h4 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* Promo Section */
.section-promo {
    background: linear-gradient(180deg, var(--bg-section) 0%, var(--bg-dark) 100%);
    max-width: 100%;
    padding-left: calc((100% - 1200px) / 2 + 2rem);
    padding-right: calc((100% - 1200px) / 2 + 2rem);
}

.promo-banner {
    display: flex;
    align-items: center;
    gap: 2rem;
    padding: 2rem;
    background: var(--gradient-primary);
    border-radius: 16px;
    margin-bottom: 2rem;
}

.promo-badge {
    text-align: center;
    padding: 1rem 2rem;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 12px;
}

.promo-badge .discount {
    display: block;
    font-size: 3rem;
    font-weight: 800;
    color: white;
}

.promo-badge .off {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.9);
}

.promo-info p {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 0.5rem;
}

.promo-info i {
    font-size: 1.25rem;
}

/* Product Cards */
.product-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-bottom: 1.5rem;
}

.product-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    overflow: hidden;
    position: relative;
}

.product-card.featured {
    border-color: var(--primary-color);
}

.featured-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: var(--primary-color);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.product-header {
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.05);
    border-bottom: 1px solid var(--border-color);
}

.product-tag {
    display: inline-block;
    background: rgba(237, 28, 36, 0.2);
    color: var(--primary-color);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.product-header h4 {
    font-size: 1.1rem;
}

.product-body {
    padding: 1.5rem;
}

.product-body ul {
    list-style: none;
    margin-bottom: 1rem;
}

.product-body li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0;
    color: var(--text-secondary);
}

.product-body li i {
    color: #22c55e;
}

.product-note {
    font-size: 0.85rem;
    color: var(--text-muted);
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.price-note {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* CTA Section */
.section-cta {
    text-align: center;
}

.cta-box {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
    padding: 3rem;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    margin-bottom: 2rem;
}

.cta-logo {
    height: 36px;
}

.cta-content {
    text-align: center;
}

.cta-content p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.cta-hint {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    color: var(--text-muted);
    font-size: 0.95rem;
}

.contact-info {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 2rem;
    background: var(--gradient-primary);
    border-radius: 12px;
    text-decoration: none;
    color: white;
    font-size: 1.1rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

.contact-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(237, 28, 36, 0.3);
}

.contact-item i {
    font-size: 1.25rem;
}

/* Footer */
footer {
    background: var(--bg-section);
    padding: 3rem 2rem;
    text-align: center;
    border-top: 1px solid var(--border-color);
}

.footer-brand {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.footer-logo-img {
    height: 36px;
}

.footer-brand span {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
}

footer p {
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

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

.footer-copyright {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-top: 1rem;
}

/* Reveal Animation */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive */
@media (max-width: 768px) {
    .nav-buttons {
        right: 1rem;
    }

    nav ul {
        display: none;
    }

    .hero-stats {
        flex-direction: column;
        gap: 1.5rem;
    }

    .promo-banner {
        flex-direction: column;
        text-align: center;
    }

    .trust-badge {
        flex-direction: column;
        text-align: center;
    }

    .contact-info {
        flex-direction: column;
        align-items: center;
    }
}