/* Müdür Mesajlar — WhatsApp Web tarzı kabuk */

#principal-messages-view { padding-bottom: 0.5rem; }

#principal-messages-view .pr-wa-shell {
    display: grid;
    grid-template-columns: minmax(260px, 340px) 1fr;
    min-height: calc(100vh - 6.5rem);
    max-height: calc(100vh - 5rem);
    border-radius: 1rem;
    overflow: hidden;
    border: 1px solid #94a3b8;
    background: #e2e8f0;
    box-shadow: 0 12px 32px rgba(15, 23, 42, 0.1);
}

#principal-messages-view .pr-wa-rail {
    display: flex;
    flex-direction: column;
    min-height: 0;
    background: #fff;
    border-right: 1px solid #cbd5e1;
}

#principal-messages-view .pr-wa-rail-top {
    padding: 1rem 1rem 0.65rem;
    background: linear-gradient(180deg, #f8fafc 0%, #fff 100%);
    border-bottom: 1px solid #e2e8f0;
}

#principal-messages-view .pr-wa-rail-top h2 {
    margin: 0;
    font-size: 1.05rem;
    font-weight: 900;
    color: #0f172a;
}

#principal-messages-view .pr-wa-rail-top p {
    margin: 0.2rem 0 0;
    font-size: 0.68rem;
    color: #64748b;
    font-weight: 600;
}

#principal-messages-view .pr-wa-tabs {
    display: flex;
    gap: 0.35rem;
    padding: 0.55rem 0.75rem 0;
}

#principal-messages-view .pr-wa-tab {
    flex: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.35rem;
    border: 1px solid #e2e8f0;
    background: #f8fafc;
    color: #475569;
    font-size: 0.68rem;
    font-weight: 800;
    padding: 0.45rem 0.4rem;
    border-radius: 0.55rem;
    cursor: pointer;
}

#principal-messages-view .pr-wa-tab.is-active {
    background: #64748b;
    border-color: #64748b;
    color: #fff;
}

#principal-messages-view .pr-wa-toolbar {
    display: flex;
    gap: 0.4rem;
    padding: 0.55rem 0.75rem;
    align-items: center;
}

#principal-messages-view .pr-wa-search {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 0.45rem;
    border: 1px solid #e2e8f0;
    border-radius: 0.65rem;
    padding: 0.4rem 0.6rem;
    background: #f8fafc;
    color: #64748b;
}

#principal-messages-view .pr-wa-search input {
    flex: 1;
    border: none;
    background: transparent;
    font-size: 0.75rem;
    color: #0f172a;
    outline: none;
}

#principal-messages-view .pr-wa-bulk {
    width: 2.25rem;
    height: 2.25rem;
    border: 1px solid #cbd5e1;
    border-radius: 0.65rem;
    background: #fff;
    color: #0284c7;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

#principal-messages-view .pr-wa-bulk:hover {
    background: #f0f9ff;
}

#principal-messages-view .pr-wa-list {
    flex: 1;
    overflow-y: auto;
    padding: 0.25rem 0.45rem 0.75rem;
}

#principal-messages-view .pr-wa-row {
    width: 100%;
    display: grid;
    grid-template-columns: 2.65rem 1fr auto;
    gap: 0.55rem;
    align-items: center;
    text-align: left;
    border: none;
    background: transparent;
    padding: 0.55rem 0.45rem;
    border-radius: 0.75rem;
    cursor: pointer;
}

#principal-messages-view .pr-wa-row:hover {
    background: #f1f5f9;
}

#principal-messages-view .pr-wa-row.is-active {
    background: #e0f2fe;
}

#principal-messages-view .pr-wa-row-text strong {
    display: block;
    font-size: 0.78rem;
    color: #0f172a;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

#principal-messages-view .pr-wa-row-text span {
    display: block;
    font-size: 0.66rem;
    color: #64748b;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

#principal-messages-view .pr-wa-avatar,
#principal-messages-view .pr-wa-peer-avatar {
    width: 2.65rem;
    height: 2.65rem;
    border-radius: 999px;
    background: #64748b;
    color: #fff;
    font-size: 0.72rem;
    font-weight: 800;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    flex-shrink: 0;
}

#principal-messages-view .pr-wa-avatar.has-photo img,
#principal-messages-view .pr-wa-peer-avatar-inner.has-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

#principal-messages-view .pr-wa-unread {
    min-width: 1.15rem;
    height: 1.15rem;
    padding: 0 0.3rem;
    border-radius: 999px;
    background: #0284c7;
    color: #fff;
    font-size: 0.62rem;
    font-weight: 800;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

#principal-messages-view .pr-wa-stage {
    display: flex;
    flex-direction: column;
    min-height: 0;
    background: #e2e8f0;
}

#principal-messages-view .pr-wa-stage-head {
    padding: 0.65rem 1rem;
    background: #64748b;
    color: #fff;
    border-bottom: 1px solid #475569;
}

#principal-messages-view .pr-wa-peer {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    min-width: 0;
}

#principal-messages-view .pr-wa-peer-text {
    min-width: 0;
}

#principal-messages-view .pr-wa-peer-text strong {
    display: block;
    font-size: 0.88rem;
    font-weight: 800;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

#principal-messages-view .pr-wa-peer-text span {
    display: block;
    font-size: 0.68rem;
    opacity: 0.88;
    font-weight: 600;
}

#principal-messages-view .pr-wa-thread {
    flex: 1;
    overflow-y: auto;
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.45rem;
    background: linear-gradient(180deg, #e2e8f0 0%, #f1f5f9 100%);
}

#principal-messages-view .pr-wa-bubble {
    max-width: 78%;
    padding: 0.55rem 0.75rem;
    border-radius: 0.75rem;
    font-size: 0.78rem;
    line-height: 1.35;
    word-break: break-word;
    box-shadow: 0 1px 2px rgba(15, 23, 42, 0.06);
}

#principal-messages-view .pr-wa-bubble.is-mine {
    align-self: flex-end;
    background: #dbeafe;
    color: #0f172a;
    border-bottom-right-radius: 0.2rem;
}

#principal-messages-view .pr-wa-bubble.is-theirs {
    align-self: flex-start;
    background: #fff;
    color: #0f172a;
    border: 1px solid #cbd5e1;
    border-bottom-left-radius: 0.2rem;
}

#principal-messages-view .pr-wa-bubble em {
    display: block;
    font-style: normal;
    font-size: 0.6rem;
    color: #64748b;
    margin-top: 0.25rem;
}

#principal-messages-view .pr-wa-composer {
    display: flex;
    gap: 0.45rem;
    padding: 0.65rem 0.75rem;
    background: #f8fafc;
    border-top: 1px solid #cbd5e1;
}

#principal-messages-view .pr-wa-composer input {
    flex: 1;
    border: 1px solid #cbd5e1;
    border-radius: 999px;
    padding: 0.55rem 0.85rem;
    font-size: 0.78rem;
    background: #fff;
}

#principal-messages-view .pr-wa-send {
    width: 2.5rem;
    height: 2.5rem;
    border: none;
    border-radius: 999px;
    background: #0284c7;
    color: #fff;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

#principal-messages-view .pr-wa-send:disabled {
    opacity: 0.45;
    cursor: not-allowed;
}

#principal-messages-view .pr-wa-empty {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: #64748b;
    font-size: 0.8rem;
    padding: 2rem;
    text-align: center;
    gap: 0.65rem;
}

#principal-messages-view .pr-wa-empty--rail,
#principal-messages-view .pr-wa-empty--thread {
    flex: none;
    padding: 1.5rem;
}

#principal-messages-view .pr-wa-empty-icon {
    width: 3rem;
    height: 3rem;
    border-radius: 999px;
    background: #fff;
    border: 1px solid #cbd5e1;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    color: #94a3b8;
}

#teacher-panel.is-ghost-mode #nav-messages-view,
#teacher-panel.is-ghost-mode #nav-principal-messages-view {
    display: none !important;
}

@media (max-width: 768px) {
    #principal-messages-view .pr-wa-shell {
        grid-template-columns: 1fr;
    }
    #principal-messages-view .pr-wa-rail.is-collapsed {
        display: none;
    }
}