/* Container respects height attribute or falls back to min-height */
.dinkychat-container {
    --dinkychat-primary-color: #007cba;
    --dinkychat-primary-hover: #005a87;
    --dinkychat-secondary-color: #6c757d;
    --dinkychat-secondary-hover: #5a6268;
    --dinkychat-danger-color: #dc3545;
    --dinkychat-danger-hover: #c82333;
    --dinkychat-warning-color: #fff3cd;
    --dinkychat-warning-border: #ffeaa7;
    --dinkychat-message-border: #f0f0f0;
    --dinkychat-user-border: #eee;
    --dinkychat-user-item-hover: #f5f5f5;
    --dinkychat-font-family: Arial;
    --dinkychat-message-color: #007cba;
    --dinkychat-timestamp-color: #666;
    --dinkychat-username-system-color: #6c757d;
    --dinkychat-space-md: 0.9375rem;
    --dinkychat-new-user-highlight: #4caf50;
    --dinkychat-leaving-user-highlight: #f44336;

    display: flex;
    flex-direction: column;
    border: 0.0625rem solid var(--dinkychat-user-border);
    border-radius: 0.3125rem;
    padding: 0.625rem;
    font-family: var(--dinkychat-font-family), sans-serif;
    background-color: #f9f9f9;
    box-shadow: 0 0.125rem 0.25rem rgba(0,0,0,0.1);
    min-height: 37.5rem;
    max-height: calc(100vh - 3.125rem);
}

.dinkychat-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 0.0625rem solid var(--dinkychat-user-border);
    padding-bottom: 0.625rem;
    margin-bottom: var(--dinkychat-space-md);
}

.dinkychat-content {
    display: grid;
    grid-template-columns: 1fr minmax(12.5rem, 18.75rem);
    gap: var(--dinkychat-space-md);
    min-height: 0;
    margin-bottom: var(--dinkychat-space-md);
    max-height: none;
}

@media (max-width: 48rem) {
    .dinkychat-content {
        grid-template-columns: 1fr; /* Stack on mobile */
    }

    /* Mobile User List Drawer */
    .dinkychat-users {
        position: fixed;
        top: 4rem; /* Offset to align with the chat container/header area */
        right: 0;
        bottom: 0;
        width: 80%;
        max-width: 300px;
        background: #fff;
        border-left: 1px solid var(--dinkychat-user-border);
        z-index: 2000; /* Higher than context menu */
        transform: translateX(100%);
        transition: transform 0.3s ease-in-out;
        padding: 1rem;
        overflow-y: auto;
        box-shadow: -2px 0 5px rgba(0,0,0,0.1);
    }

    .dinkychat-users.is-open {
        transform: translateX(0);
    }

    .mobile-only-btn {
        display: block;
        background: var(--dinkychat-primary-color);
        color: #fff;
        border: none;
        padding: 0.4rem 0.8rem;
        border-radius: 0.25rem;
        cursor: pointer;
        font-weight: 600;
        margin-left: auto;
    }

    /* Backdrop for drawer */
    .dinkychat-drawer-overlay {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0,0,0,0.5);
        z-index: 1999;
        display: none;
    }

    .dinkychat-drawer-overlay.is-visible {
        display: block;
    }
}

.dinkychat-messages {
    flex-grow: 1;
    min-height: 0;
    max-height: none;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    border: 0.0625rem solid var(--dinkychat-user-border);
    border-radius: 0.1875rem;
    padding: 0.625rem;
    background-color: white;
}

.dinkychat-users {
    flex-shrink: 0;
    min-height: 15.625rem;
    overflow-y: auto;
    border: 0.0625rem solid var(--dinkychat-user-border);
    border-radius: 0.1875rem;
    padding: 0.625rem;
    background-color: white;
}

.dinkychat-user-item.just-joined {
    animation: dinkychat-join-flash 1s ease-out;
}

.dinkychat-user-item.user-departing {
    opacity: 0.6;
    transition: opacity 0.5s ease;
}

@keyframes dinkychat-join-flash {
    0% { background-color: var(--dinkychat-new-user-highlight); }
    100% { background-color: transparent; }
}

/* User list item container */
.dinkychat-user-list {
    overflow-y: auto;
    padding-right: 0.3125rem; /* Space for scrollbar */
}

/* Ensure footer doesn't overlay content */
footer, .dinkychat-footer, .chat-footer {
    position: static !important; /* Prevent absolute positioning conflicts */
    z-index: auto;
}

.dinkychat-users h4 {
    margin-top: 0;
    margin-bottom: 0.625rem;
}

#dinkychat-user-list {
    list-style-type: none;
    padding: 0;
    margin: 0;
}

#dinkychat-user-list li {
    padding: 0.3125rem;
    border-bottom: 0.0625rem solid var(--dinkychat-message-border);
}

#dinkychat-user-list li:last-child {
    border-bottom: none;
}

.dinkychat-messages, .dinkychat-users, #dinkychat-user-list {
    scrollbar-width: thin;
    scrollbar-color: var(--dinkychat-secondary-color) transparent;
}

.dinkychat-messages::-webkit-scrollbar,
.dinkychat-users::-webkit-scrollbar,
#dinkychat-user-list::-webkit-scrollbar {
    width: 0.375rem;
}

.dinkychat-messages::-webkit-scrollbar-thumb,
.dinkychat-users::-webkit-scrollbar-thumb,
#dinkychat-user-list::-webkit-scrollbar-thumb {
    background-color: var(--dinkychat-secondary-color);
    border-radius: 0.1875rem;
}

.dinkychat-messages::-webkit-scrollbar-track,
.dinkychat-users::-webkit-scrollbar-track,
#dinkychat-user-list::-webkit-scrollbar-track {
    background: transparent;
}

.dinkychat-registration {
    margin-bottom: var(--dinkychat-space-md);
    padding: 0.625rem;
    background-color: #e9f7fe;
    border-radius: 0.1875rem;
}

#dinkychat-username {
    padding: 0.5rem;
    margin-right: 0.625rem;
    border: 0.0625rem solid #ddd;
    border-radius: 0.1875rem;
    width: 12.5rem;
}

#dinkychat-register-btn {
    padding: 0.5rem 0.9375rem;
    background-color: var(--dinkychat-primary-color);
    color: white;
    border: none;
    border-radius: 0.1875rem;
    cursor: pointer;
}

#dinkychat-register-btn:hover {
    background-color: var(--dinkychat-primary-hover);
}

.dinkychat-interface {
    margin-top: var(--dinkychat-space-md);
    padding: 0.625rem;
    background-color: #fff;
    border-radius: 0.1875rem;
    border: 0.0625rem solid var(--dinkychat-user-border);
}

.dinkychat-input-area {
    display: flex;
    gap: var(--dinkychat-space-md);
    margin-bottom: 0.625rem;
}

#dinkychat-message-input {
    flex: 1;
    padding: 0.5rem;
    border: 0.0625rem solid #ddd;
    border-radius: 0.1875rem;
}

#dinkychat-send-btn {
    padding: 0.5rem 0.9375rem;
    background-color: var(--dinkychat-primary-color);
    color: white;
    border: none;
    border-radius: 0.1875rem;
    cursor: pointer;
}

#dinkychat-send-btn:hover {
    background-color: var(--dinkychat-primary-hover);
}

#dinkychat-send-btn:disabled {
    background-color: #b0b0b0;
    color: #f0f0f0;
    cursor: not-allowed;
}

#dinkychat-send-btn:disabled:hover {
    background-color: #b0b0b0;
}

.dinkychat-actions {
    display: flex;
    gap: var(--dinkychat-space-md);
    margin-top: 0.625rem;
}

.dinkychat-actions button {
    padding: 0.375rem 0.75rem;
    background-color: var(--dinkychat-secondary-color);
    color: white;
    border: none;
    border-radius: 0.1875rem;
    cursor: pointer;
}

.dinkychat-actions button:hover {
    background-color: var(--dinkychat-secondary-hover);
}

.dinkychat-moderator-actions {
    margin-top: var(--dinkychat-space-md);
    padding: 0.625rem;
    background-color: var(--dinkychat-warning-color);
    border-radius: 0.1875rem;
    border: 0.0625rem solid var(--dinkychat-warning-border);
}

.dinkychat-moderator-actions h4 {
    margin-top: 0;
    margin-bottom: 0.625rem;
}

.dinkychat-moderator-actions input {
    padding: 0.375rem;
    margin-right: 0.625rem;
    border: 0.0625rem solid #ddd;
    border-radius: 0.1875rem;
    width: 9.375rem;
}

.dinkychat-moderator-actions button {
    padding: 0.375rem 0.75rem;
    background-color: var(--dinkychat-danger-color);
    color: white;
    border: none;
    border-radius: 0.1875rem;
    cursor: pointer;
}

.dinkychat-moderator-actions button:hover {
    background-color: var(--dinkychat-danger-hover);
}

.dinkychat-message {
    margin-bottom: 0.625rem;
    padding: 0.3125rem 0;
    border-bottom: 0.0625rem solid var(--dinkychat-message-border);
}

.dinkychat-message .username {
    font-weight: bold;
    color: var(--dinkychat-primary-color);
}

.dinkychat-message .timestamp {
    font-size: 0.8em;
    color: var(--dinkychat-timestamp-color);
    margin-left: 0.625rem;
}

.dinkychat-message .content {
    margin-top: 0.3125rem;
}

.dinkychat-message .content .mention {
    background-color: #1565c0;
    color: #ffffff;
    border-radius: 0.1875rem;
    padding: 0 0.25rem;
    font-weight: 600;
}

.dinkychat-message .content .mention-self {
    background-color: #f0a500;
    border: 0.0625rem solid #f0a500;
    color: #000000;
}

/* System message styling */
.dinkychat-message.username-system {
    font-style: italic;
}

.dinkychat-message.username-system .username {
    color: var(--dinkychat-username-system-color);
    opacity: 0.7;
}

/* Cooldown indicator styling */
#dinkychat-change-username-btn.disabled {
    background-color: var(--dinkychat-username-system-color); !important;
    cursor: not-allowed;
    position: relative;
}

#dinkychat-change-username-btn.disabled::after {
    content: '';
    position: absolute;
    top: 0.125rem;
    right: 0.125rem;
    bottom: 0.125rem;
    left: 0.125rem;
    background-color: rgba(0,0,0,0.15);
    border-radius: 0.1875rem;
}

/* Username input placeholder for cooldown */
#dinkychat-username[placeholder*="wait"] {
    color: #888;
}

/* Context Menu Styling */
#dinkychat-context-menu {
    position: fixed;
    display: none;
    padding: 0.3125rem 0;
    list-style: none;
    margin: 0;
    background: white;
    border: 0.0625rem solid #ccc;
    box-shadow: 0 0.25rem 0.75rem rgba(0,0,0,0.2);
    border-radius: 0.25rem;
    min-width: 11.25rem;
    max-height: 21.875rem;
    overflow-y: auto;
    z-index: 9999;
}

#dinkychat-context-menu.is-visible {
    display: block;
}

.dinkychat-context-menu .context-menu-item {
    display: block;
    padding: 0.625rem 0.9375rem;
    color: #333;
    text-decoration: none;
    cursor: pointer;
    font-size: 0.9em;
    white-space: nowrap;
}

.dinkychat-context-menu .context-menu-item:hover {
    background-color: var(--dinkychat-user-item-hover);
    color: var(--dinkychat-primary-color);
}

/* User list item styling */
.dinkychat-user-item {
    cursor: pointer;
    transition: background-color 0.2s ease, border-left 0.2s ease;
    will-change: background-color, border-left, padding-left;
    padding: 0.5rem 0.625rem;
    margin: 0.125rem 0;
    border-radius: 0.1875rem;
}

/* User list item hover styling */
.dinkychat-user-item:hover {
    background-color: var(--dinkychat-user-item-hover); !important;
    border-left: 0.1875rem solid var(--dinkychat-primary-color);
    padding-left: 0.4375rem; /* Adjust for border */
}

/* User list join indicator - temporary highlight for new users */
.dinkychat-user-item.just-joined {
    animation: dinkychat-joint-pulse 2s ease-in-out 1;
    background-color: #e8f5e9;
    border-left: 0.25rem solid var(--dinkychat-new-user-highlight) !important;
}

.dinkychat-user-item.just-joined::after {
    content: ' 🎉';
    animation: dinkychat-badge-fade 3s ease-out forwards;
}

/* Pulse animation for join */
@keyframes dinkychat-joint-pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

/* Badge fade animation */
@keyframes dinkychat-badge-fade {
    0% { opacity: 1; transform: translateY(0); }
    70% { opacity: 1; }
    100% { opacity: 0; transform: translateY(-0.3125rem); }
}

/* Ensure animation only applies once */
.dinkychat-user-item.just-joined {
    pointer-events: none;
}

/* User list departure indicator - temporary highlight for leaving users */
.dinkychat-user-item.user-departing {
    animation: dinkychat-depart-pulse 2s ease-in-out 1;
    background-color: #ffebee;
    border-left: 0.25rem solid var(--dinkychat-leaving-user-highlight) !important;
}

/* Pulse animation for departure */
@keyframes dinkychat-depart-pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.03); }
}

/* IP address styling - hidden by default from non-moderators */
.ip-address {
    font-size: 0.7em;
    color: var(--dinkychat-secondary-color);
    font-family: monospace;
    margin-left: 0.625rem;
    padding-left: 0.3125rem;
}

/* Hide IPs via JS when not authorized */
.hide-ips .ip-address,
.dinkychat-users.hide-ips .ip-address {
    display: none;
}

/* Moderator badge styling */
.mod-badge {
    font-size: 0.875rem;
    margin-left: 0.5rem;
    vertical-align: middle;
}
input[type="text"]:focus,
button:focus,
.dinkychat-user-item:focus {
    outline: 0.125rem solid var(--dinkychat-primary-color);
    outline-offset: 0.125rem;
}

/* Hide mobile-only elements on desktop (larger than 48rem) */
@media (min-width: 48.1rem) {
    .mobile-only-btn {
        display: none;
    }
}

.dinkychat-load-more {
    text-align: center;
    padding: 0.5rem;
    background: #e9ecef;
    color: var(--dinkychat-secondary-color);
    cursor: pointer;
    font-size: 0.875rem;
    border: 1px solid var(--dinkychat-user-border);
    border-radius: 0.25rem;
    margin: 0.25rem auto;
    display: block;
}

.dinkychat-load-more:hover {
    background: #dee2e6;
}

.dinkychat-load-more.loading {
    opacity: 0.7;
    pointer-events: none;
}