* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans Arabic', 'Cairo', sans-serif;
    background-color: #f5f5f5;
    height: 100vh;
    overflow: hidden;
}

.container {
    display: flex;
    height: 100vh;
    width: 100%;
}

/* Left Sidebar */
.sidebar {
    width: 320px;
    background-color: #ffffff;
    border-right: 1px solid #e0e0e0;
    display: flex;
    flex-direction: column;
    padding: 24px;
    overflow-y: auto;
}

.sidebar-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 32px;
}

.gear-icon {
    color: #666;
    width: 20px;
    height: 20px;
}

.sidebar-header h2 {
    font-size: 18px;
    font-weight: 600;
    color: #333;
}

.settings-section {
    margin-bottom: 32px;
}

.settings-section h3 {
    font-size: 14px;
    font-weight: 600;
    color: #333;
    margin-bottom: 16px;
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: #333;
    margin-bottom: 8px;
}

.model-select {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid #d0d0d0;
    border-radius: 6px;
    font-size: 14px;
    background-color: #fff;
    color: #333;
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1L6 6L11 1' stroke='%23666' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
}

.model-select:focus {
    outline: none;
    border-color: #4a90e2;
    box-shadow: 0 0 0 3px rgba(74, 144, 226, 0.1);
}

.reasoning-label {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.reasoning-value {
    font-size: 14px;
    color: #999;
    font-weight: 400;
}

.slider-container {
    position: relative;
    margin-top: 8px;
}

.reasoning-slider {
    width: 100%;
    height: 6px;
    border-radius: 3px;
    background: linear-gradient(to right, #4a90e2 0%, #4a90e2 66.66%, #e0e0e0 66.66%, #e0e0e0 100%);
    outline: none;
    -webkit-appearance: none;
    appearance: none;
}

.reasoning-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: #4a90e2;
    cursor: pointer;
    border: 2px solid #fff;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.reasoning-slider::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: #4a90e2;
    cursor: pointer;
    border: 2px solid #fff;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}


.slider-labels {
    display: flex;
    justify-content: space-between;
    margin-top: 8px;
    font-size: 12px;
    color: #666;
}

.message-count {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.label-bold {
    font-size: 14px;
    font-weight: 600;
    color: #333;
}

#message-count {
    font-size: 14px;
    color: #333;
}

.history-description {
    font-size: 13px;
    color: #666;
    line-height: 1.5;
}

.clear-button {
    margin-top: auto;
    padding: 12px 16px;
    background-color: #fff;
    border: 1px solid #d0d0d0;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
    color: #333;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    justify-content: center;
    transition: background-color 0.2s;
}

.clear-button:hover {
    background-color: #f5f5f5;
}

.clear-button svg {
    width: 16px;
    height: 16px;
}

/* Right Chat Area */
.chat-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    background-color: #ffffff;
    overflow: hidden;
}

.chat-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 24px;
    border-bottom: 1px solid #e0e0e0;
    background-color: #fff;
}

.sidebar-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    color: #666;
}

.sidebar-toggle svg {
    width: 20px;
    height: 20px;
}

.chat-header h1 {
    font-size: 20px;
    font-weight: 600;
    color: #333;
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 24px;
    display: flex;
    flex-direction: column;
}

.empty-state {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 40px;
}

.chat-icon {
    width: 80px;
    height: 80px;
    border: 2px solid #e0e0e0;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
    color: #999;
}

.empty-state h2 {
    font-size: 24px;
    font-weight: 600;
    color: #333;
    margin-bottom: 12px;
}

.empty-state p {
    font-size: 14px;
    color: #666;
    line-height: 1.6;
    max-width: 500px;
}

.message {
    margin-bottom: 16px;
    display: flex;
    flex-direction: column;
}

.message.user {
    align-items: flex-end;
}

.message.assistant {
    align-items: flex-start;
}

.message-content {
    max-width: 70%;
    padding: 12px 16px;
    border-radius: 12px;
    font-size: 14px;
    line-height: 1.6;
    word-wrap: break-word;
    white-space: pre-wrap;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans Arabic', 'Cairo', sans-serif;
    unicode-bidi: plaintext;
}

.message.user .message-content {
    background-color: #4a90e2;
    color: #fff;
    border-bottom-right-radius: 4px;
}

.message.assistant .message-content {
    background-color: #f0f0f0;
    color: #333;
    border-bottom-left-radius: 4px;
}

.message.assistant .message-content.streaming {
    background-color: #f5f5f5;
}

.chat-input-container {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 16px 24px;
    border-top: 1px solid #e0e0e0;
    background-color: #fff;
}

.message-input {
    flex: 1;
    padding: 12px 16px;
    border: 1px solid #d0d0d0;
    border-radius: 8px;
    font-size: 14px;
    outline: none;
    transition: border-color 0.2s;
}

.message-input:focus {
    border-color: #4a90e2;
    box-shadow: 0 0 0 3px rgba(74, 144, 226, 0.1);
}

.send-button {
    width: 44px;
    height: 44px;
    background-color: #4a90e2;
    border: none;
    border-radius: 8px;
    color: #fff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.2s;
}

.send-button:hover:not(:disabled) {
    background-color: #357abd;
}

.send-button:disabled {
    background-color: #ccc;
    cursor: not-allowed;
}

.send-button svg {
    width: 20px;
    height: 20px;
}

/* Responsive */
@media (max-width: 768px) {
    .sidebar {
        position: fixed;
        left: -320px;
        top: 0;
        height: 100vh;
        z-index: 1000;
        transition: left 0.3s;
    }

    .sidebar.open {
        left: 0;
    }

    .sidebar-toggle {
        display: block;
    }
}

/* Scrollbar styling */
.chat-messages::-webkit-scrollbar,
.sidebar::-webkit-scrollbar {
    width: 8px;
}

.chat-messages::-webkit-scrollbar-track,
.sidebar::-webkit-scrollbar-track {
    background: #f5f5f5;
}

.chat-messages::-webkit-scrollbar-thumb,
.sidebar::-webkit-scrollbar-thumb {
    background: #ccc;
    border-radius: 4px;
}

.chat-messages::-webkit-scrollbar-thumb:hover,
.sidebar::-webkit-scrollbar-thumb:hover {
    background: #999;
}