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

body {
    font-family: 'Share Tech Mono', 'Courier New', monospace;
    background-color: #050510;
    color: #c0e0ff;
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

/* ===== Global Elements ===== */
button {
    transition: all 0.2s ease;
}

img {
    max-width: 100%;
    height: auto;
}

a {
    transition: all 0.2s ease;
    color: #0ff;
}

a:hover {
    color: #ff3366;
    text-shadow: 0 0 8px rgba(255,51,102,0.5);
}

::selection {
    background: rgba(0,240,255,0.3);
    color: #c0e0ff;
}

::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: rgba(5,5,16,0.5);
}

::-webkit-scrollbar-thumb {
    background: rgba(0,240,255,0.3);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: #0ff;
}

/* ===== Detail Page Shared ===== */
.detail-header {
    background: rgba(5,5,16,0.9);
    border-bottom: 1px solid rgba(0,240,255,0.3);
    box-shadow: 0 0 20px rgba(0,240,255,0.1);
    padding: 12px 32px;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(8px);
}

.header-inner {
    max-width: 900px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

.brand-logo {
    font-size: 18px;
    color: #0ff;
    text-decoration: none;
    letter-spacing: 4px;
    text-shadow: 0 0 12px rgba(0,255,255,0.6);
}

.brand-logo:hover {
    text-shadow: 0 0 20px rgba(0,255,255,0.9);
}

.back-btn {
    color: #0ff;
    text-decoration: none;
    font-size: 13px;
    letter-spacing: 2px;
    padding: 6px 18px;
    border: 1px solid rgba(0,240,255,0.3);
    border-radius: 4px;
    transition: all 0.2s ease;
}

.back-btn:hover {
    background: rgba(0,240,255,0.15);
    border-color: #0ff;
    box-shadow: 0 0 12px rgba(0,240,255,0.3);
}

/* ===== Classified Ad ===== */
.classified-ad {
    border: 1px dashed rgba(0,240,255,0.2);
    background: rgba(0,10,20,0.5);
    padding: 12px;
    margin: 24px 0;
    text-align: center;
}

.classified-ad-label {
    font-size: 9px;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: #0ff;
    margin-bottom: 8px;
    opacity: 0.6;
}

/* ===== Responsive ===== */
@media (max-width: 640px) {
    .detail-header {
        padding: 10px 16px;
    }
    .header-inner {
        flex-wrap: wrap;
    }
    .brand-logo {
        font-size: 14px;
    }
}