/* chat-widget.css
   Floating chat widget for all user-facing pages.
   Sits fixed at bottom-right of every page.
   Uses same CSS variables from style.css
*/


/* ========================= FLOATING BUTTON ========================= */
.chat-widget-btn {
    position: fixed;
    bottom: 2rem;
    right: 1.5rem;
    z-index: 999;
    width: 5rem;
    height: 5rem;
    border-radius: 50%;
    background: var(--color-primary);
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 0.8rem 2rem rgba(0, 226, 123, 0.45);
    transition: var(--transition);
}

.chat-widget-btn:hover {
    transform: scale(1.08);
    box-shadow: 0 1rem 2.5rem rgba(0, 226, 123, 0.55);
}

.chat-widget-btn i {
    font-size: 2.4rem;
    color: var(--color-dark);
    transition: var(--transition);
}

/* Unread badge on button */
.chat-widget-btn .chat-unread-badge {
    position: absolute;
    top: 0.2rem;
    right: 0.2rem;
    width: 1.8rem;
    height: 1.8rem;
    border-radius: 50%;
    background: var(--color-danger);
    color: #fff;
    font-size: 0.95rem;
    font-weight: 700;
    display: none;
    align-items: center;
    justify-content: center;
    border: 2px solid var(--color-white);
}

.chat-widget-btn .chat-unread-badge.show {
    display: flex;
}


/* ========================= CHAT PANEL ========================= */
.chat-widget-panel {
    position: fixed;
    inset: 0;
    z-index: 99998;
    width: 100%;
    height: 100%;
    background: var(--color-white);
    border-radius: 1.6rem 1.6rem 0 0;
    box-shadow: 0 2rem 5rem rgba(0, 0, 0, 0.18);
    display: flex;
    flex-direction: column;
    overflow: hidden;

    /* Hidden by default */
    opacity: 0;
    pointer-events: none;
    transform: translateY(1.5rem) scale(0.97);
    transition: opacity 250ms ease, transform 250ms ease;
}

.chat-widget-panel.open {
    opacity: 1;
    pointer-events: all;
    transform: translateY(0) scale(1);
}


/* ── PANEL HEADER ── */
.chat-panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.4rem var(--card-padding);
    background: var(--color-primary);
    flex-shrink: 0;
}

.chat-panel-header-left {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.chat-panel-avatar {
    width: 3.4rem;
    height: 3.4rem;
    min-width: 3.4rem;
    min-height: 3.4rem;
    border-radius: 50%;
    overflow: hidden;
    flex-shrink: 0;
}

.chat-panel-avatar-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
}

.chat-panel-title {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--color-dark);
}

.chat-panel-subtitle {
    font-size: 1rem;
    color: rgba(0, 0, 0, 0.6);
    margin-top: 0.1rem;
}

.chat-panel-close {
    background: rgba(0, 0, 0, 0.15);
    border: none;
    border-radius: 50%;
    width: 2.8rem;
    height: 2.8rem;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    flex-shrink: 0;
}

.chat-panel-close:hover {
    background: rgba(0, 0, 0, 0.3);
}

.chat-panel-close i {
    font-size: 1.4rem;
    color: var(--color-dark);
}


/* ── MESSAGES AREA ── */
.chat-panel-messages {
    flex: 1;
    overflow-y: auto;
    padding: 1.6rem var(--card-padding);
    display: flex;
    flex-direction: column;
    gap: 1rem;
    background: var(--color-light);
}

/* Loading state */
.chat-panel-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    color: var(--color-gray-light);
    font-size: 1.1rem;
    gap: 0.8rem;
}

/* Empty / welcome state */
.chat-panel-welcome {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 1rem;
    padding: 2rem 1rem;
}

.chat-panel-welcome i {
    font-size: 4rem;
    color: var(--color-primary);
    opacity: 0.7;
}

.chat-panel-welcome h3 {
    font-size: 1.4rem;
    color: var(--color-dark);
}

.chat-panel-welcome p {
    font-size: 1.1rem;
    color: var(--color-gray-light);
    line-height: 1.6;
}

/* Message bubbles */
.widget-msg {
    display: flex;
    flex-direction: column;
    max-width: 80%;
    gap: 0.3rem;
}

.widget-msg.from-user  { align-self: flex-end; }
.widget-msg.from-admin { align-self: flex-start; }

.widget-msg.is-pending .widget-bubble { opacity: 0.55; }
.widget-msg.is-pending .widget-meta   { font-style: italic; }

.widget-msg.is-failed  { cursor: pointer; }
.widget-msg.is-failed .widget-bubble {
    opacity: 0.7;
    outline: 1.5px solid var(--color-danger);
}
.widget-msg.is-failed .widget-meta { color: var(--color-danger); }

.widget-bubble {
    padding: 1rem 1.3rem;
    border-radius: var(--radius-2);
    font-size: 1.2rem;
    line-height: 1.5;
    word-break: break-word;
}

.from-user  .widget-bubble {
    background: var(--color-primary);
    color: var(--color-dark);
    border-bottom-right-radius: 0.3rem;
}

.from-admin .widget-bubble {
    background: var(--color-white);
    color: var(--color-dark);
    border-bottom-left-radius: 0.3rem;
    box-shadow: 0 0.2rem 0.6rem rgba(0,0,0,0.06);
}

.widget-meta {
    font-size: 0.95rem;
    color: var(--color-gray-light);
}

.from-user  .widget-meta { text-align: right; }
.from-admin .widget-meta { text-align: left; }


/* ── INPUT BOX ── */
.chat-panel-input-row {
    display: flex;
    align-items: flex-end;
    gap: 0.8rem;
    padding: 1.2rem var(--card-padding);
    background: var(--color-white);
    border-top: 1px solid var(--color-light);
    flex-shrink: 0;
}

.chat-panel-input {
    flex: 1;
    background: var(--color-light);
    border: 2px solid transparent;
    border-radius: var(--radius-2);
    padding: 1rem 1.2rem;
    font-size: 1.2rem;
    font-family: "Poppins", sans-serif;
    color: var(--color-dark);
    resize: none;
    outline: none;
    transition: var(--transition);
    max-height: 10rem;
}

.chat-panel-input:focus {
    border-color: var(--color-primary);
}

.chat-panel-input::placeholder { color: var(--color-gray-light); }

.chat-panel-send {
    width: 4rem;
    height: 4rem;
    border-radius: 50%;
    background: var(--color-primary);
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    flex-shrink: 0;
}

.chat-panel-send:hover {
    box-shadow: 0 0.5rem 1rem rgba(0, 226, 123, 0.4);
    transform: scale(1.05);
}

.chat-panel-send:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.chat-panel-send i {
    font-size: 1.6rem;
    color: var(--color-dark);
}


/* ========================= DESKTOP ========================= */
@media screen and (min-width: 600px) {
    .chat-widget-btn {
        bottom: 2.5rem;
        right: 2.5rem;
        width: 5.5rem;
        height: 5.5rem;
    }

    .chat-widget-panel {
        top: auto;
        bottom: 9rem;
        right: 2.5rem;
        left: auto;
        width: 36rem;
        height: 50rem;
        border-radius: var(--radius-3);
    }
}

/* ========================= ATTACH BUTTON ========================= */
.chat-attach-btn {
    width: 3.4rem;
    height: 3.4rem;
    border-radius: 50%;
    background: var(--color-light);
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    flex-shrink: 0;
}

.chat-attach-btn:hover {
    background: rgba(0, 226, 123, 0.18);
}

.chat-attach-btn i {
    font-size: 1.6rem;
    color: var(--color-gray-dark);
    transition: var(--transition);
}

.chat-attach-btn:hover i {
    color: var(--color-primary);
}


/* ========================= FILE PREVIEW BAR ========================= */
.chat-file-preview {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.8rem;
    padding: 0.8rem var(--card-padding);
    background: rgba(0, 226, 123, 0.07);
    border-top: 1px solid rgba(0, 226, 123, 0.18);
    flex-shrink: 0;
}

.chat-file-preview-inner {
    display: flex;
    align-items: center;
    gap: 0.7rem;
    min-width: 0;
}

.chat-file-thumb {
    width: 3.6rem;
    height: 3.6rem;
    border-radius: 0.6rem;
    object-fit: cover;
    flex-shrink: 0;
}

.chat-file-icon {
    font-size: 1.6rem;
    flex-shrink: 0;
    color: var(--color-gray-dark);
}

.chat-file-icon--pdf { color: #e74c3c; }
.chat-file-icon--img { color: var(--color-primary); }

.chat-file-name {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-dark);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 20rem;
}

.chat-file-remove {
    background: none;
    border: none;
    cursor: pointer;
    width: 2.4rem;
    height: 2.4rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: var(--transition);
}

.chat-file-remove:hover {
    background: var(--color-danger-light);
}

.chat-file-remove i {
    font-size: 1.3rem;
    color: var(--color-gray-light);
}

.chat-file-remove:hover i {
    color: var(--color-danger);
}


/* ========================= ATTACHMENT BUBBLES ========================= */
.widget-bubble--file {
    padding: 0.4rem;
}

.widget-attachment-img {
    display: block;
    max-width: 100%;
    max-height: 18rem;
    border-radius: calc(var(--radius-2) - 2px);
    object-fit: cover;
    cursor: zoom-in;
}

.widget-file-link {
    display: flex;
    align-items: center;
    gap: 0.7rem;
    padding: 0.6rem 0.8rem;
    text-decoration: none;
    color: var(--color-dark);
    font-size: 1.1rem;
    font-weight: 600;
}

.widget-file-link i {
    font-size: 1.8rem;
    color: #e74c3c;
    flex-shrink: 0;
}

.widget-file-link:hover {
    text-decoration: underline;
}