/**
 * Messenger Widget - Iframe UI Wrapper Stylesheet
 *
 * Styles for the floating chat widget injected by iframe-ui-wrapper.js.
 * Include alongside the JS file on any host website.
 *
 * @version 1.0
 */

/* ============================================
   CSS Custom Properties
   ============================================ */

.messenger-widget-container {
    --messenger-primary: #0d6efd;
    --messenger-secondary: #6c757d;
    --messenger-bubble-size: 60px;
    --messenger-window-width: 460px;
    --messenger-window-height: 550px;
    --messenger-border-radius: 16px;
    --messenger-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
    --messenger-z-index: 999999;
}

/* ============================================
   Container
   ============================================ */

.messenger-widget-container {
    position: fixed;
    z-index: var(--messenger-z-index);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

.messenger-widget-container[data-position="bottom-right"] {
    bottom: 20px;
    right: 20px;
}

.messenger-widget-container[data-position="bottom-left"] {
    bottom: 20px;
    left: 20px;
}

/* ============================================
   Chat Bubble Button
   ============================================ */

.messenger-widget-bubble {
    width: var(--messenger-bubble-size);
    height: var(--messenger-bubble-size);
    border-radius: 50%;
    border: none;
    background-color: var(--messenger-primary);
    color: #ffffff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    position: relative;
    outline: none;
}

.messenger-widget-bubble:hover {
    transform: scale(1.08);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25);
}

.messenger-widget-bubble:active {
    transform: scale(0.95);
}

.messenger-widget-bubble-icon,
.messenger-widget-bubble-close {
    transition: opacity 0.2s ease, transform 0.2s ease;
    position: absolute;
}

.messenger-widget-bubble-close {
    opacity: 0;
    transform: rotate(-90deg);
}

.messenger-widget-open .messenger-widget-bubble-icon {
    opacity: 0;
    transform: rotate(90deg);
}

.messenger-widget-open .messenger-widget-bubble-close {
    opacity: 1;
    transform: rotate(0deg);
}

/* ============================================
   Unread Badge
   ============================================ */

.messenger-widget-badge {
    position: absolute;
    top: -4px;
    right: -4px;
    background-color: #dc3545;
    color: #ffffff;
    font-size: 11px;
    font-weight: 700;
    min-width: 20px;
    height: 20px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 5px;
    line-height: 1;
    border: 2px solid #ffffff;
}

/* ============================================
   Chat Window
   ============================================ */

.messenger-widget-window {
    position: absolute;
    bottom: calc(var(--messenger-bubble-size) + 16px);
    width: var(--messenger-window-width);
    height: var(--messenger-window-height);
    background-color: #ffffff;
    border-radius: var(--messenger-border-radius);
    box-shadow: var(--messenger-shadow);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    animation: messengerSlideUp 0.25s ease-out;
}

.messenger-widget-container[data-position="bottom-right"] .messenger-widget-window {
    right: 0;
}

.messenger-widget-container[data-position="bottom-left"] .messenger-widget-window {
    left: 0;
}

@keyframes messengerSlideUp {
    from {
        opacity: 0;
        transform: translateY(16px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ============================================
   Window Header
   ============================================ */

.messenger-widget-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    background-color: var(--messenger-primary);
    color: #ffffff;
    flex-shrink: 0;
}

.messenger-widget-header-title {
    font-size: 15px;
    font-weight: 600;
}

.messenger-widget-header-actions {
    display: flex;
    align-items: center;
    gap: 4px;
}

.messenger-widget-header-actions button {
    background: none;
    border: none;
    color: #ffffff;
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0.8;
    transition: opacity 0.15s ease;
}

.messenger-widget-header-actions button:hover {
    opacity: 1;
    background-color: rgba(255, 255, 255, 0.15);
}

/* ============================================
   Window Body (Nav + Content columns)
   ============================================ */

.messenger-widget-body {
    flex: 1;
    display: flex;
    flex-direction: row;
    overflow: hidden;
}

/* ============================================
   Navigation Sidebar
   ============================================ */

.messenger-widget-nav {
    width: 58px;
    min-width: 58px;
    height: 100%;
    background-color: #1e1e2e;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding-top: 12px;
    gap: 4px;
    flex-shrink: 0;
    border-right: 1px solid rgba(255, 255, 255, 0.06);
}

.messenger-widget-nav-item {
    width: 42px;
    height: 42px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    border: none;
    background: transparent;
    color: rgba(255, 255, 255, 0.45);
    cursor: pointer;
    transition: all 0.15s ease;
    position: relative;
    padding: 0;
    outline: none;
}

.messenger-widget-nav-item:hover {
    background: rgba(255, 255, 255, 0.08);
    color: rgba(255, 255, 255, 0.85);
}

.messenger-widget-nav-item.active {
    background: var(--messenger-primary);
    color: #ffffff;
    box-shadow: 0 2px 8px rgba(13, 110, 253, 0.3);
}

.messenger-widget-nav-item i {
    font-size: 18px;
    line-height: 1;
}

.messenger-widget-nav-label {
    font-size: 9px;
    margin-top: 2px;
    text-align: center;
    color: inherit;
    font-weight: 500;
    letter-spacing: 0.02em;
}

/* ============================================
   Main Content Area
   ============================================ */

.messenger-widget-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    min-width: 0;
}

/* ============================================
   Iframe
   ============================================ */

.messenger-widget-iframe {
    flex: 1;
    width: 100%;
    border: none;
    background-color: #f8f9fa;
}

/* ============================================
   Responsive - Mobile
   ============================================ */

@media (max-width: 480px) {
    .messenger-widget-container {
        --messenger-window-width: calc(100vw - 24px);
        --messenger-window-height: calc(100vh - 120px);
    }

    .messenger-widget-container[data-position="bottom-right"],
    .messenger-widget-container[data-position="bottom-left"] {
        bottom: 12px;
        right: 12px;
        left: auto;
    }

    .messenger-widget-window {
        right: 0 !important;
        left: auto !important;
        border-radius: 12px;
    }
}

@media (max-width: 400px) {
    .messenger-widget-container {
        --messenger-bubble-size: 52px;
    }

    .messenger-widget-bubble svg {
        width: 24px;
        height: 24px;
    }
}