/* ========================================
   Chat Panel - Slide-out Vertical Bar Design
   Based on test-iframe/index.html
   ======================================== */

/* Chat Panel Container */
.chat-panel {
    direction: rtl; /* Align content to the right */
    position: fixed;
    top: 0;
    right: 0;
    width: 420px;
    height: 100vh;
    border-left: 1px solid #d4cfc4;
    display: flex;
    flex-direction: column;
    background: #ffffff;
    box-shadow: -4px 0 20px rgba(0,0,0,0.08);
    transition: width 0.3s ease;
    z-index: 9999;
    overflow: hidden;
}

.chat-panel.collapsed {
    width: 48px;
    cursor: pointer;
}

.chat-panel.collapsed:hover {
    width: 56px;
    background: linear-gradient(135deg, #faf8f4 0%, #f0ece4 100%);
}

.chat-panel.collapsed .chat-header,
.chat-panel.collapsed .chat-iframe {
    opacity: 0;
    pointer-events: none;
}

/* Collapsed Strip - Vertical Bar with Icon and Text */
.collapsed-strip {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    padding-top: 16px;
    gap: 12px;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.chat-panel.collapsed .collapsed-strip {
    opacity: 1;
    pointer-events: auto;
}

.collapsed-strip svg {
    width: 24px;
    height: 24px;
    stroke: #c9a962;
}

.collapsed-strip span {
    writing-mode: vertical-rl;
    text-orientation: mixed;
    color: #8b6914;
    font-weight: 600;
    font-size: 14px;
}

/* Chat Header */
.chat-header {
    padding: 12px 16px;
    background: linear-gradient(135deg, #faf8f4 0%, #f0ece4 100%);
    border-bottom: 1px solid #d4cfc4;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    transition: opacity 0.3s ease;
    flex-shrink: 0;
}

.chat-header-right {
    display: flex;
    align-items: center;
    gap: 10px;
}

.chat-title {
    color: #8b6914;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
}

.chat-title svg {
    width: 20px;
    height: 20px;
    stroke: #c9a962;
}

/* Header Buttons */
.header-btn {
    background: none;
    border: none;
    color: #8b7355;
    font-size: 18px;
    cursor: pointer;
    padding: 6px;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.header-btn:hover {
    background: rgba(201, 169, 98, 0.15);
    color: #8b6914;
}

.header-btn svg {
    width: 18px;
    height: 18px;
    fill: currentColor;
}

/* Chat Iframe */
.chat-iframe {
    flex: 1;
    border: none;
    width: 100%;
    background: #ffffff;
    transition: opacity 0.3s ease;
}

/* ========================================
   Main Content Centering
   ======================================== */

/* 
   Strategy: Shift the viewport by adding padding to body,
   then let existing margin: auto centering work naturally.
   Match panel transition timing for synchronized animation.
*/

/* Reserve space for expanded panel (420px) */
body.chat-panel-expanded {
    padding-right: 420px;
    box-sizing: border-box;
    transition: padding 0.3s ease;
}

/* Reserve space for collapsed panel (48px) */
body.chat-panel-collapsed {
    padding-right: 48px;
    box-sizing: border-box;
    transition: padding 0.3s ease;
}

/* Smooth transition for content repositioning */
.clsPageAlign,
.clsFooter {
    transition: margin 0.3s ease;
}

/* 
   How this works:
   1. body gets padding-right (reduces available width)
   2. .clsPageAlign (width: 1000px, margin: auto) centers in reduced space
   3. When viewport < (1000px + 420px), content extends and panel overlays

   Example:
   - Viewport: 1920px, Panel: 420px
   - Available: 1920px - 420px = 1500px
   - Content: 1000px
   - Left margin: (1500px - 1000px) / 2 = 250px ✓ Centered!

   All transitions synchronized at 0.3s ease to match panel width animation.
*/

/* When no panel exists (ShowChat = false), no adjustments needed */