.details-section { padding: 5rem 0; }

.details-grid { display: grid; grid-template-columns: 1fr 300px; gap: 2.5rem; align-items: start; }

.card {
    background: var(--bg-alt);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    margin-bottom: 1.25rem;
    position: relative;
}

.card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 2px;
    background: var(--gradient);
    opacity: 0.5;
}

.card-header {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    padding: 1.1rem 1.5rem;
    border-bottom: 1px solid var(--border);
    font-size: 0.9375rem;
    font-weight: 600;
}

.card-header i { color: var(--accent); font-size: 0.875rem; }

.card-header .hbadge {
    margin-left: auto;
    font-size: 0.68rem;
    font-weight: 600;
    padding: 0.18rem 0.55rem;
    border-radius: 999px;
    background: rgba(92, 207, 230,0.1);
    border: 1px solid rgba(92, 207, 230,0.2);
    color: var(--accent);
}

.card-body { padding: 1.5rem; }

.about-text { font-size: 0.9375rem; color: var(--text-dim); line-height: 1.9; }

.oss-block {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1.1rem 1.25rem;
    border-radius: 10px;
    background: rgba(163,190,140,0.07);
    border: 1px solid rgba(163,190,140,0.2);
    margin-top: 1.5rem;
}

.oss-block > i { color: var(--accent-green); font-size: 1.1rem; flex-shrink: 0; margin-top: 0.1rem; }
.oss-block-body h4 { font-size: 0.9rem; font-weight: 700; color: var(--accent-green); margin-bottom: 0.3rem; }
.oss-block-body p { font-size: 0.845rem; color: var(--text-dim); line-height: 1.7; }
.oss-block-body a { color: var(--accent); text-decoration: underline; text-underline-offset: 2px; }

.features-list { list-style: none; }

.features-list li {
    display: flex;
    align-items: flex-start;
    gap: 0.8rem;
    padding: 0.65rem 0;
    border-bottom: 1px solid var(--border);
}

.features-list li:last-child { border-bottom: none; }

.fcheck {
    width: 20px; height: 20px;
    border-radius: 50%;
    background: rgba(163,190,140,0.14);
    border: 1px solid rgba(163,190,140,0.3);
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
    margin-top: 0.15rem;
}

.fcheck i { color: var(--accent-green); font-size: 0.6rem; }
.features-list span { font-size: 0.855rem; font-weight: 500; line-height: 1.5; }

.tech-list { display: flex; flex-direction: column; }

.tech-item { display: flex; align-items: center; gap: 0.85rem; padding: 0.65rem 0; border-bottom: 1px solid var(--border); }
.tech-item:last-child { border-bottom: none; }
.tech-item > i { width: 18px; text-align: center; color: var(--accent); font-size: 0.875rem; flex-shrink: 0; }
.tech-name { font-size: 0.865rem; font-weight: 600; }
.tech-role { font-size: 0.72rem; color: var(--text-dim); }

.info-list { display: flex; flex-direction: column; }

.info-row { display: flex; justify-content: space-between; align-items: center; padding: 0.6rem 0; border-bottom: 1px solid var(--border); font-size: 0.845rem; }
.info-row:last-child { border-bottom: none; }
.info-label { color: var(--text-dim); font-weight: 500; }
.info-value { font-weight: 600; }
.info-green { color: var(--accent-green); display: flex; align-items: center; gap: 0.3rem; }

.tag-pills { display: flex; flex-wrap: wrap; gap: 0.4rem; }

.tag-pill {
    background: var(--bg-soft);
    border: 1px solid var(--border);
    padding: 0.25rem 0.75rem;
    border-radius: 999px;
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: border-color 0.2s, color 0.2s;
}

.tag-pill:hover { border-color: var(--accent); color: var(--text); }

.footer { background: var(--bg-alt); border-top: 1px solid var(--border); padding: 3rem 0 2rem; }

.footer-top {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 2rem;
    align-items: start;
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--border);
}

.footer-brand { display: flex; align-items: center; gap: 0.55rem; font-weight: 700; font-size: 1rem; margin-bottom: 0.6rem; }
.footer-brand-dot { width: 8px; height: 8px; background: var(--gradient); border-radius: 50%; }
.footer-tagline { font-size: 0.845rem; color: var(--text-dim); max-width: 320px; line-height: 1.65; }

.footer-links { display: flex; gap: 0.5rem; }

.footer-link {
    width: 36px; height: 36px;
    border-radius: 999px;
    border: 1px solid var(--border);
    display: flex; align-items: center; justify-content: center;
    color: var(--text-dim);
    font-size: 0.875rem;
    transition: all 0.22s;
}

.footer-link:hover { background: var(--accent); border-color: var(--accent); color: #1f2430; transform: translateY(-2px); }

.footer-bottom { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 1rem; font-size: 0.8rem; color: var(--text-dim); }

.back-link {
    display: flex; align-items: center; gap: 0.4rem;
    padding: 0.38rem 0.95rem;
    border-radius: 999px;
    border: 1px solid var(--border);
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-dim);
    transition: all 0.22s;
}

.back-link:hover { background: var(--bg-soft); color: var(--text); }

.lightbox {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 9999;
    background: rgba(0,0,0,0.9);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.lightbox.open { display: flex; }

.lightbox img { max-width: 100%; max-height: 90vh; border-radius: var(--radius); box-shadow: 0 30px 90px rgba(0,0,0,0.8); }

.lb-close {
    position: absolute;
    top: 1.25rem; right: 1.25rem;
    width: 40px; height: 40px;
    border-radius: 50%;
    background: var(--bg-soft);
    border: 1px solid var(--border);
    display: flex; align-items: center; justify-content: center;
    color: var(--text-dim);
    cursor: pointer;
    transition: all 0.2s;
}

.lb-close:hover { background: var(--border); color: var(--text); }

@media (max-width: 900px) {
    .details-grid { grid-template-columns: 1fr; }
    .footer-top { grid-template-columns: 1fr; }
}