/* GBG Debian 13 Linux Page Styles */
:root {
    --gbg-bg-dark: #0f1117;
    --gbg-card-bg: #181c26;
    --gbg-card-border: #282f40;
    --gbg-primary: #3b82f6;
    --gbg-primary-hover: #2563eb;
    --gbg-accent: #06b6d4;
    --gbg-text-main: #f1f5f9;
    --gbg-text-muted: #94a3b8;
    --gbg-radius: 12px;
}

.gbg-linux-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 20px 80px;
    color: var(--gbg-text-main);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    line-height: 1.6;
}

/* Hero Section */
.gbg-hero {
    background: linear-gradient(135deg, #131824 0%, #1e2638 100%);
    border: 1px solid var(--gbg-card-border);
    border-radius: 16px;
    padding: 60px 40px;
    text-align: center;
    margin-bottom: 60px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.35);
}

.gbg-badge {
    display: inline-block;
    background: rgba(59, 130, 246, 0.15);
    color: var(--gbg-accent);
    border: 1px solid rgba(6, 182, 212, 0.3);
    padding: 6px 16px;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    margin-bottom: 20px;
}

.gbg-hero h1 {
    font-size: 3rem;
    font-weight: 800;
    margin: 0 0 20px;
    background: linear-gradient(to right, #ffffff, #93c5fd);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.gbg-subtitle {
    max-width: 780px;
    margin: 0 auto 35px;
    font-size: 1.15rem;
    color: var(--gbg-text-muted);
}

.gbg-subtitle strong {
    color: var(--gbg-text-main);
}

.gbg-hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn-primary,
.btn-secondary {
    display: inline-block;
    padding: 14px 28px;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.25s ease;
}

.btn-primary {
    background: var(--gbg-primary);
    color: #ffffff;
    box-shadow: 0 4px 14px rgba(59, 130, 246, 0.4);
}

.btn-primary:hover {
    background: var(--gbg-primary-hover);
    transform: translateY(-2px);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.06);
    color: var(--gbg-text-main);
    border: 1px solid var(--gbg-card-border);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.12);
    transform: translateY(-2px);
}

/* Section Headers */
.section-header {
    text-align: center;
    margin-bottom: 40px;
}

.section-header h2 {
    font-size: 2.1rem;
    font-weight: 700;
    margin: 0 0 10px;
    color: #ffffff;
}

.section-header p {
    color: var(--gbg-text-muted);
    font-size: 1.05rem;
    max-width: 680px;
    margin: 0 auto;
}

/* 3 Screenshots Gallery */
.gbg-screenshots-section {
    margin-bottom: 70px;
}

.gbg-gallery-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.gbg-screenshot-card {
    background: var(--gbg-card-bg);
    border: 1px solid var(--gbg-card-border);
    border-radius: var(--gbg-radius);
    overflow: hidden;
    transition: transform 0.25s ease, border-color 0.25s ease;
}

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

.screenshot-wrapper {
    width: 100%;
    aspect-ratio: 4 / 3;
    background: #0b0d12;
    overflow: hidden;
    border-bottom: 1px solid var(--gbg-card-border);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: zoom-in;
}

.screenshot-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
    transition: transform 0.35s ease;
}

/* Lightbox Modal (Zoom με κλικ) */
.gbg-lightbox {
    display: none;
    position: fixed;
    z-index: 9999;
    inset: 0;
    background: rgba(0, 0, 0, 0.9);
    align-items: center;
    justify-content: center;
    padding: 20px;
    cursor: zoom-out;
}

.gbg-lightbox.active {
    display: flex;
}

.gbg-lightbox img {
    max-width: 95vw;
    max-height: 92vh;
    border-radius: 8px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.8);
}

.gbg-screenshot-card:hover .screenshot-wrapper img {
    transform: scale(1.04);
}

.screenshot-caption {
    padding: 20px;
}

.screenshot-caption h3 {
    font-size: 1.15rem;
    margin: 0 0 8px;
    color: #ffffff;
}

.screenshot-caption p {
    margin: 0;
    font-size: 0.92rem;
    color: var(--gbg-text-muted);
}

/* Why Section (4 Cards) */
.gbg-why-section {
    margin-bottom: 70px;
}

.gbg-features-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.feature-card {
    background: var(--gbg-card-bg);
    border: 1px solid var(--gbg-card-border);
    border-radius: var(--gbg-radius);
    padding: 28px;
    transition: border-color 0.25s ease;
}

.feature-card:hover {
    border-color: var(--gbg-accent);
}

.feature-icon {
    font-size: 2rem;
    margin-bottom: 14px;
}

.feature-card h3 {
    font-size: 1.25rem;
    margin: 0 0 10px;
    color: #ffffff;
}

.feature-card p {
    margin: 0;
    color: var(--gbg-text-muted);
    font-size: 0.96rem;
}

.feature-card strong {
    color: var(--gbg-text-main);
}

/* Included Software Section */
.gbg-included-section {
    margin-bottom: 70px;
}

.included-columns {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.included-box {
    background: var(--gbg-card-bg);
    border: 1px solid var(--gbg-card-border);
    border-radius: var(--gbg-radius);
    padding: 30px;
}

.included-box h3 {
    font-size: 1.25rem;
    margin: 0 0 18px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--gbg-card-border);
    color: #ffffff;
}

.included-box ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.included-box li {
    position: relative;
    padding-left: 22px;
    margin-bottom: 14px;
    color: var(--gbg-text-muted);
    font-size: 0.95rem;
}

.included-box li:last-child {
    margin-bottom: 0;
}

.included-box li::before {
    content: "✔";
    position: absolute;
    left: 0;
    color: var(--gbg-accent);
    font-weight: bold;
}

.included-box strong {
    color: var(--gbg-text-main);
}

/* System Requirements & Install Steps */
.install-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.specs-box,
.steps-box {
    background: linear-gradient(145deg, #161b26, #1b2230);
    border: 1px solid var(--gbg-card-border);
    border-radius: var(--gbg-radius);
    padding: 30px;
}

.specs-box h3,
.steps-box h3 {
    font-size: 1.25rem;
    margin: 0 0 18px;
    color: #ffffff;
}

.specs-box ul,
.steps-box ol {
    padding-left: 20px;
    margin: 0;
    color: var(--gbg-text-muted);
}

.specs-box li,
.steps-box li {
    margin-bottom: 12px;
    font-size: 0.96rem;
}

.specs-box strong,
.steps-box strong {
    color: var(--gbg-text-main);
}

.steps-box code {
    background: rgba(0, 0, 0, 0.4);
    padding: 2px 6px;
    border-radius: 4px;
    color: var(--gbg-accent);
    font-family: monospace;
}

/* Responsive Design */
@media (max-width: 960px) {
    .gbg-gallery-grid {
        grid-template-columns: 1fr;
    }

    .gbg-features-grid,
    .included-columns,
    .install-grid {
        grid-template-columns: 1fr;
    }

    .gbg-hero {
        padding: 40px 20px;
    }

    .gbg-hero h1 {
        font-size: 2.2rem;
    }
}




.gbg-donation-banner {
    background: linear-gradient(135deg, #111827, #1e293b);
    border: 1px solid #334155;
    border-radius: 16px;
    padding: 28px 24px;
    text-align: center;
    color: #fff;
    max-width: 650px;
    margin: 25px auto;
    box-shadow: 0 8px 30px rgba(0,0,0,.25);
}

.gbg-donation-banner .donation-text {
    color: #cbd5e1;
    font-size: 15px;
    line-height: 1.7;
    margin-bottom: 22px;
}

.gbg-donation-banner .donation-title {
    font-size: 24px;
    font-weight: 800;
    color: #fff;
    margin-bottom: 12px;
}

.gbg-donation-banner .paypal-donate-form {
    margin-top: 20px;
}

.gbg-donation-banner .btn-donate {
    background: #0070ba;
    color: #fff;
    border: none;
    border-radius: 10px;
    padding: 15px 32px;
    font-size: 17px;
    font-weight: 700;
    cursor: pointer;
    transition: all .3s ease;
    box-shadow: 0 4px 15px rgba(0,112,186,.3);
}

.gbg-donation-banner .btn-donate:hover {
    background: #003087;
    transform: translateY(-3px);
    box-shadow: 0 7px 20px rgba(0,112,186,.4);
}

.gbg-donation-banner .donation-footer {
    color: #94a3b8;
    font-size: 12px;
    margin-top: 18px;
}

@media (max-width: 480px) {
    .gbg-donation-banner {
        padding: 22px 16px;
    }

    .gbg-donation-banner .btn-donate {
        width: 100%;
    }
}

.btn-torrent {
    display: inline-block;
    background: linear-gradient(135deg, #10b981, #059669);
    color: #ffffff;
    padding: 14px 28px;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    box-shadow: 0 4px 14px rgba(16, 185, 129, 0.35);
    transition: all 0.25s ease;
}

.btn-torrent:hover {
    background: linear-gradient(135deg, #34d399, #10b981);
    transform: translateY(-2px);
    box-shadow: 0 6px 18px rgba(16, 185, 129, 0.5);
}


/* Download & Checksums Box */
.gbg-checksum-box {
    margin-top: 32px;
    background: var(--gbg-card-bg);
    border: 1px solid var(--gbg-card-border);
    border-radius: var(--gbg-radius);
    padding: 32px;
    text-align: center;
}

.gbg-checksum-box h3 {
    font-size: 1.4rem;
    margin: 0 0 10px;
    color: #ffffff;
}

.gbg-checksum-box .checksum-desc {
    color: var(--gbg-text-muted);
    margin: 0 0 24px;
    font-size: 0.96rem;
}

.checksum-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 28px;
}

.checksum-list {
    max-width: 760px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.checksum-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    background: #0f1117;
    border: 1px solid var(--gbg-card-border);
    border-radius: 8px;
    padding: 10px 16px;
    flex-wrap: wrap;
}

.hash-label {
    font-weight: 700;
    color: var(--gbg-accent);
    min-width: 50px;
    text-align: left;
}

.hash-value {
    font-family: monospace;
    font-size: 0.9rem;
    color: var(--gbg-text-main);
    word-break: break-all;
    flex: 1;
    text-align: left;
}

.btn-copy {
    background: rgba(59, 130, 246, 0.15);
    color: #93c5fd;
    border: 1px solid rgba(59, 130, 246, 0.35);
    border-radius: 6px;
    padding: 6px 14px;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-copy:hover {
    background: var(--gbg-primary);
    color: #ffffff;
}

.btn-copy.copied {
    background: #10b981;
    border-color: #10b981;
    color: #ffffff;
}