/**
 * أنماط الدردشة المتطورة
 */

/* Chat Container & Sidebar */
.chat-sidebar {
    position: fixed;
    top: 0;
    /* Ensure it is completely off-screen by default */
    left: -100vw; 
    bottom: 0;
    width: 350px;
    max-width: 90vw;
    background: var(--surface-color); /* Fallback */
    /* Adds a subtle pattern */
    background-image: radial-gradient(circle at 10% 20%, rgba(0, 0, 0, 0.05) 0%, transparent 20%),
                      radial-gradient(circle at 90% 80%, rgba(0, 0, 0, 0.05) 0%, transparent 20%);
    background-color: var(--chat-bg);
    box-shadow: 5px 0 30px rgba(0,0,0,0.3);
    z-index: 10002; /* Higher than header and overlay */
    display: flex;
    flex-direction: column;
    transition: left 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    border-right: 1px solid var(--border-color);
}

.chat-sidebar.open {
    left: 0 !important; /* Force open */
}

/* Chat Header */
.chat-header {
    flex-shrink: 0;
    padding: 18px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--bg-color-light);
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.chat-header h3 {
    margin: 0;
    font-size: 16px;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 8px;
}

.chat-close {
    background: rgba(255,255,255,0.1);
    border: none;
    color: var(--text-muted-color);
    width: 30px; 
    height: 30px;
    border-radius: 50%;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}
.chat-close:hover {
    background: rgba(220, 38, 38, 0.1);
    color: #ef4444;
    transform: rotate(90deg);
}

/* Chat Messages Area */
.chat-messages {
    flex-grow: 1;
    padding: 20px 15px;
    overflow-y: auto;
    display: flex;
    flex-direction: column-reverse; /* Scroll from bottom */
    scroll-behavior: smooth;
    gap: 15px;
}

/* Scrollbar styling */
.chat-messages::-webkit-scrollbar {
    width: 6px;
}
.chat-messages::-webkit-scrollbar-track {
    background: transparent;
}
.chat-messages::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 10px;
}

/* Empty State */
.empty-messages {
    margin: auto;
    text-align: center;
    color: var(--text-muted-color);
    opacity: 0.6;
}
.empty-messages-icon {
    font-size: 60px;
    margin-bottom: 15px;
    animation: floatIcon 3s ease-in-out infinite;
}
@keyframes floatIcon {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}
.empty-messages-text {
    font-size: 14px;
    line-height: 1.6;
}

/* Individual Message Bubble */
.chat-message {
    max-width: 80%;
    display: flex;
    flex-direction: column;
    animation: popIn 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
}

@keyframes popIn {
    from { opacity: 0; transform: scale(0.9) translateY(10px); }
    to { opacity: 1; transform: scale(1) translateY(0); }
}

.chat-message.me {
    align-self: flex-end;
    align-items: flex-end;
}

.chat-message.other {
    align-self: flex-start;
    align-items: flex-start;
}

/* Message Header (Avatar + Name) */
.msg-header {
    display: flex;
    align-items: center;
    margin-bottom: 4px;
    gap: 8px;
    padding: 0 5px;
}
.chat-message.me .msg-header {
    flex-direction: row-reverse;
}

.msg-avatar {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--surface-color);
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.msg-sender {
    font-weight: 700;
    font-size: 11px;
    color: var(--text-muted-color);
}

/* Message Text Bubble */
.msg-text {
    padding: 10px 14px;
    border-radius: 16px;
    font-size: 14px;
    line-height: 1.5;
    word-wrap: break-word;
    position: relative;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
}

/* Specific Styles for 'Me' */
.chat-message.me .msg-text {
    background: var(--primary-gradient);
    color: white;
    border-bottom-left-radius: 16px;
    border-bottom-right-radius: 2px; /* Tail */
}

/* Specific Styles for 'Other' */
.chat-message.other .msg-text {
    background: var(--surface-color);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    border-bottom-left-radius: 2px; /* Tail */
    border-bottom-right-radius: 16px;
}

.msg-time {
    font-size: 10px;
    color: var(--text-muted-color);
    margin-top: 4px;
    padding: 0 5px;
    opacity: 0.7;
}

/* Emoji Picker Container */
.emoji-picker {
    height: 0;
    overflow: hidden;
    background: var(--surface-color);
    transition: height 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    padding: 0 10px;
    gap: 5px;
    overflow-y: auto;
    border-top: 1px solid var(--border-color);
}

.emoji-picker.open {
    height: 180px;
    padding: 10px;
}

.emoji-btn {
    background: none;
    border: none;
    font-size: 20px;
    cursor: pointer;
    padding: 5px;
    border-radius: 8px;
    transition: background 0.2s;
}

.emoji-btn:hover {
    background: rgba(255,255,255,0.1);
    transform: scale(1.1);
}

/* Input Area */
.chat-input-container {
    flex-shrink: 0;
    padding: 15px;
    background: var(--bg-color-light);
    border-top: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 10px;
    position: relative;
}

.chat-input {
    flex-grow: 1;
    padding: 12px 15px;
    border-radius: 25px;
    border: 1px solid var(--border-color);
    background: var(--input-bg);
    color: var(--text-color);
    font-family: inherit;
    font-size: 14px;
    outline: none;
    transition: all 0.3s;
    box-shadow: inset 0 2px 4px rgba(0,0,0,0.1);
}
.chat-input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.15);
    background: var(--surface-color);
}

.chat-emoji-btn {
    background: none;
    border: none;
    font-size: 20px;
    cursor: pointer;
    color: var(--text-muted-color);
    transition: transform 0.2s, color 0.2s;
    padding: 5px;
    border-radius: 50%;
}
.chat-emoji-btn:hover {
    color: #fbbf24;
    transform: scale(1.1) rotate(10deg);
    background: rgba(251, 191, 36, 0.1);
}

.chat-send {
    background: var(--primary-gradient);
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: white;
    transition: all 0.2s;
    box-shadow: 0 4px 10px rgba(102, 126, 234, 0.4);
}
.chat-send:hover {
    transform: scale(1.05) translateX(-2px); /* Slight move for RTL */
    box-shadow: 0 6px 15px rgba(102, 126, 234, 0.6);
}
.chat-send:active {
    transform: scale(0.95);
}

/* Responsive Adjustments */
@media (max-width: 768px) {
    .chat-sidebar {
        width: 100%;
        max-width: 100%;
        left: -100vw; /* Keep it fully hidden */
        border-right: none;
    }
    .chat-message {
        max-width: 88%;
    }
    .msg-text {
        font-size: 15px; /* Larger text for better readability on mobile */
        padding: 12px 16px;
    }
    .emoji-picker.open {
        grid-template-columns: repeat(7, 1fr);
    }
}