@font-face {
    font-family: 'sahel';
    src: url('font/sahel.eot') format('embedded-opentype'), url('font/sahel.ttf') format('truetype'), url('font/sahel.woff') format('woff'), url('font/sahel.woff2') format('woff2');
}

html, body {
    height: 100%;
    margin: 0;
    direction: rtl;
}

.chat-app {
    height: 100vh;
    display: flex;
    flex-direction: column;
    font-family: sahel,'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--bg);
    color: var(--text);
    transition: all 0.3s ease;
}

    .chat-app.light {
        --bg: #f8f9fa;
        --text: #212529;
        --bubble-user: #007bff;
        --bubble-ai: #e9ecef;
    }

    .chat-app.dark {
        --bg: #0d1117;
        --text: #f0f6fc;
        --bubble-user: #238636;
        --bubble-ai: #21262d;
    }

.chat-header {
    padding: 1rem;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--bg);
}

.chat-title {
    margin: 0;
    font-size: 1.5rem;
    font-weight: 600;
}

.btn-theme {
    background: none;
    border: none;
    font-size: 1.3rem;
    color: var(--text);
    opacity: 0.7;
    transition: opacity 0.2s;
}

    .btn-theme:hover {
        opacity: 1;
    }

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 1rem;
    background: var(--bg);
}

.message {
    display: flex;
    margin-bottom: 1rem;
    animation: fadeIn 0.3s ease;
}

    .message.user {
        justify-content: flex-start;
    }

    .message.ai {
        justify-content: flex-start;
    }

.message-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--bubble-user);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    margin: 0 0.5rem;
}

.message.ai .message-avatar {
    background: #10a37f;
}

.message-bubble {
    max-width: 70%;
    background: var(--bubble);
    padding: 0.75rem 1rem;
    border-radius: 18px;
    box-shadow: 0 1px 2px rgba(0,0,0,0.1);
}

.message.user .message-bubble {
    background: var(--bubble-user);
    color: white;
}

.message.ai .message-bubble {
    background: var(--bubble-ai);
    color: var(--text);
}

.message-content :global(pre) {
    background: #1e1e1e;
    color: #d4d4d4;
    padding: 1rem;
    border-radius: 8px;
    overflow-x: auto;
}

.empty-state {
    text-align: center;
    color: var(--text);
    opacity: 0.6;
    margin-top: 3rem;
}

.chat-input-container {
    padding: 1rem;
    border-top: 1px solid var(--border);
    background: var(--bg);
}

.chat-input {
    border-radius: 0px !important;
    padding: 0.75rem 1rem !important;
    border: 1px solid var(--border) !important;
}

.btn-send {
    border-radius: 50% !important;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #10a37f !important;
    border: none !important;
    color: white !important;
}

    .btn-send.disabled {
        background: #6c757d !important;
        cursor: not-allowed;
    }

.typing-indicator {
    display: flex;
    gap: 4px;
    margin-top: 8px;
}

    .typing-indicator span {
        width: 8px;
        height: 8px;
        border-radius: 50%;
        background: #999;
        animation: typing 1.4s infinite;
    }

        .typing-indicator span:nth-child(2) {
            animation-delay: 0.2s;
        }

        .typing-indicator span:nth-child(3) {
            animation-delay: 0.4s;
        }

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: none;
    }
}

@keyframes typing {
    0%, 100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-6px);
    }
}

.chat-app.light {
    --border: #dee2e6;
}

.chat-app.dark {
    --border: #30363d;
}


.model-selector {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.form-select-sm {
    background-color: var(--bg);
    border-color: var(--border);
    color: var(--text);
}

.chat-app.light .form-select-sm {
    --border: #dee2e6;
}

.chat-app.dark .form-select-sm {
    --border: #30363d;
}