/* ================================================================
   ADS CSS
   Shared across all subjects and the hub
   Side rails (left + right) + bottom banner
   ================================================================ */

/* ── Ad Containers (common) ──────────────────────────── */
.ad-container {
    position: fixed;
    z-index: 100;
    pointer-events: auto;
}

/* ── Side Rails ──────────────────────────────────────── */
.ad-rail {
    top: 50%;
    transform: translateY(-50%);
    width: 160px;
}
.ad-rail-left {
    left: calc((100vw - 780px) / 2 - 160px - 24px);
}
.ad-rail-right {
    right: calc((100vw - 780px) / 2 - 160px - 24px);
}
/* Subject pages have narrower max-width (680px) */
body[data-page-type="subject"] .ad-rail-left {
    left: calc((100vw - 680px) / 2 - 160px - 24px);
}
body[data-page-type="subject"] .ad-rail-right {
    right: calc((100vw - 680px) / 2 - 160px - 24px);
}

/* ── Bottom Banner ───────────────────────────────────── */
.ad-bottom {
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 800;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 8px 0;
    background: rgba(255, 255, 255, 0.95);
    border-top: 1px solid rgba(0, 0, 0, 0.08);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

/* Push footer content above bottom banner */
body.has-ads {
    padding-bottom: 100px;
}

/* ── Dark Mode ───────────────────────────────────────── */
body.dark-mode .ad-bottom {
    background: rgba(30, 30, 40, 0.95);
    border-top-color: rgba(255, 255, 255, 0.08);
}

/* ── Custom Wallpaper (glassmorphism) ────────────────── */
body.has-bg .ad-bottom {
    background: rgba(255, 255, 255, 0.12);
    border-top-color: rgba(255, 255, 255, 0.15);
}
body.has-bg.dark-mode .ad-bottom {
    background: rgba(0, 0, 0, 0.25);
    border-top-color: rgba(255, 255, 255, 0.1);
}

/* ── Placeholder Styling ─────────────────────────────── */
.ad-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px dashed rgba(0, 0, 0, 0.15);
    border-radius: 6px;
    color: rgba(0, 0, 0, 0.25);
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 0.5px;
    background: rgba(0, 0, 0, 0.02);
}
body.dark-mode .ad-placeholder {
    border-color: rgba(255, 255, 255, 0.12);
    color: rgba(255, 255, 255, 0.2);
    background: rgba(255, 255, 255, 0.02);
}
.ad-rail .ad-placeholder {
    width: 160px;
    height: 600px;
}
.ad-bottom .ad-placeholder {
    width: 728px;
    max-width: 100%;
    height: 90px;
}

/* ── Desktop sidebar: hide side rails (sidebar occupies that space) ── */
body.device-desktop .ad-rail {
    display: none !important;
}

/* ── Responsive: hide side rails on narrow viewports ── */
@media (max-width: 1200px) {
    .ad-rail {
        display: none !important;
    }
}

/* ── Premium Users: hide all ads ─────────────────────── */
body.premium-user .ad-container {
    display: none !important;
}
body.premium-user {
    padding-bottom: 0 !important;
}

/* ── In-Activity: hide all ads during trainers/lessons ─ */
body.in-activity .ad-container {
    display: none !important;
}
body.in-activity {
    padding-bottom: 0 !important;
}