:root {
    --primary-color: #6200EE; /* Deep Purple */
    --primary-light: #BB86FC;
    --secondary-color: #03DAC6; /* Teal */
    --accent-color: #FFC107; /* Amber */
    --user-bubble-color: #E8EAF6; /* Light Blue-Grey */
    --model-bubble-color: #E0F2F7; /* Light Cyan */
    --border-color: #CFD8DC; /* Light Grey */
    --text-color: #212121; /* Dark Grey */
    --light-text-color: #616161;
    --bg-color: #ECEFF1; /* Lighter Grey */
    --panel-bg: #FFFFFF;
    --error-color: #D32F2F; /* Red */
    --success-color: #388E3C; /* Green */
    --shadow: 0 6px 20px rgba(0,0,0,0.1);
    --border-radius-lg: 18px;
    --border-radius-md: 12px;
    --border-radius-sm: 8px;
}

body {
    font-family: 'Inter', sans-serif;
    margin: 0;
    padding: 20px;
    background-color: var(--bg-color);
    color: var(--text-color);
    display: flex;
    justify-content: center;
    align-items: flex-start;
    min-height: 100vh;
    line-height: 1.6;
}

.container {
    background-color: var(--panel-bg);
    padding: 30px;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow);
    max-width: 950px;
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 25px;
    margin: 20px auto;
}

h1 {
    text-align: center;
    color: var(--primary-color);
    margin-bottom: 10px;
    font-weight: 700;
}

p.description {
    text-align: center;
    color: var(--light-text-color);
    margin-bottom: 20px;
    font-size: 0.95em;
}

.chat-area {
    display: flex;
    flex-direction: column;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    background-color: #fcfdfe;
    min-height: 400px;
    max-height: 550px;
    overflow-y: auto;
    padding: 15px;
    gap: 15px;
    scroll-behavior: smooth;
}

.message-bubble {
    padding: 12px 18px;
    border-radius: 20px;
    max-width: 85%;
    word-wrap: break-word;
    line-height: 1.5;
    box-shadow: 0 2px 6px rgba(0,0,0,0.08);
    position: relative;
}

.user-message {
    background-color: var(--user-bubble-color);
    align-self: flex-end;
    border-bottom-right-radius: var(--border-radius-sm);
    color: var(--text-color);
}

.model-message {
    background-color: var(--model-bubble-color);
    align-self: flex-start;
    border-bottom-left-radius: var(--border-radius-sm);
    color: var(--text-color);
    /* white-space: pre-wrap; /* For Markdown pre-formatting - JS handles this better now */
}

.message-role {
    font-weight: 600;
    margin-bottom: 5px;
    display: block;
    color: var(--primary-color);
    font-size: 0.9em;
}

.message-bubble img {
    max-width: 100%;
    height: auto;
    border-radius: var(--border-radius-sm);
    margin-top: 10px;
    border: 1px solid var(--border-color);
}

.copy-button {
    position: absolute;
    top: 5px;
    right: 5px;
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1.1em;
    color: var(--light-text-color);
    opacity: 0;
    transition: opacity 0.2s;
    padding: 5px;
    border-radius: 5px;
}

.model-message:hover .copy-button {
    opacity: 1;
    background-color: rgba(0,0,0,0.05);
}
.copy-button:active {
    color: var(--primary-color);
}


/* Markdown Styling */
.model-message p { margin: 0 0 0.5em 0; }
.model-message pre {
    background-color: #263238; /* Dark code background */
    color: #EEFF41; /* Light yellow code text */
    padding: 10px;
    border-radius: 5px;
    overflow-x: auto;
    font-family: monospace;
    font-size: 0.9em;
    margin-top: 10px;
}
.model-message code {
    background-color: rgba(0,0,0,0.05);
    padding: 2px 4px;
    border-radius: 3px;
    font-family: monospace;
    font-size: 0.9em;
}
.model-message ul, .model-message ol {
    margin-left: 20px;
    padding-left: 0;
}
.model-message li { margin-bottom: 5px; }


.loading-indicator {
    display: none; /* Varsayılan olarak gizli */
    text-align: center;
    margin-top: 10px;
    font-size: 0.9em;
    color: var(--light-text-color);
}

.loading-indicator span {
    display: inline-block;
    width: 12px;
    height: 12px;
    background-color: var(--primary-color);
    border-radius: 50%;
    animation: bounce 1.4s infinite ease-in-out;
    margin: 0 4px;
    opacity: 0.7;
}

.loading-indicator span:nth-child(1) { animation-delay: -0.32s; }
.loading-indicator span:nth-child(2) { animation-delay: -0.16s; }

@keyframes bounce {
    0%, 80%, 100% { transform: scale(0); opacity: 0; }
    40% { transform: scale(1); opacity: 1; }
}

.input-area {
    display: flex;
    flex-wrap: wrap; /* İhtiyaç halinde alt satıra geç */
    gap: 15px;
    margin-top: 10px;
}

.input-area textarea {
    flex-grow: 1;
    padding: 12px 18px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    font-size: 1em;
    resize: vertical;
    min-height: 55px;
    max-height: 150px;
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.input-area textarea:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(98, 0, 238, 0.1);
}

.input-area button {
    padding: 12px 22px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    font-size: 1em;
    font-weight: 600;
    transition: background-color 0.2s, transform 0.1s;
    white-space: nowrap;
}

.input-area button:hover {
    background-color: #5500CC;
    transform: translateY(-1px);
}

.input-area button:active {
    transform: translateY(0);
}

.input-area button:disabled {
    background-color: #BDBDBD;
    cursor: not-allowed;
    transform: none;
}

.voice-button {
    background-color: var(--secondary-color);
}
.voice-button:hover {
    background-color: #00A691;
}

.image-upload-area {
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 10px;
    border: 1px dashed var(--border-color);
    border-radius: var(--border-radius-sm);
    padding: 15px;
    text-align: center;
    color: var(--light-text-color);
    background-color: #fefefe;
}

.image-upload-area input[type="file"] {
    display: none;
}

.image-upload-area label {
    cursor: pointer;
    padding: 8px 15px;
    background-color: #E0E0E0;
    color: var(--text-color);
    border-radius: var(--border-radius-sm);
    display: inline-block;
    transition: background-color 0.2s;
}
.image-upload-area label:hover {
    background-color: #CECECE;
}

.image-preview {
    max-width: 150px;
    height: auto;
    margin: 10px auto 0;
    border-radius: var(--border-radius-sm);
    border: 1px solid var(--border-color);
    display: block; /* Varsayılan olarak gösterilir ama boş olduğunda gizlenir */
}
.image-preview-container {
    position: relative;
    display: none; /* JS tarafından gösterilecek */
    margin: 0 auto;
}
.image-preview-container .clear-image-btn {
    position: absolute;
    top: -10px;
    right: -10px;
    background-color: var(--error-color);
    color: white;
    border: none;
    border-radius: 50%;
    width: 24px;
    height: 24px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 0.8em;
    cursor: pointer;
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.error-message, .success-message {
    padding: 10px 15px;
    border-radius: var(--border-radius-sm);
    margin-bottom: 15px;
    font-weight: 600;
    text-align: center;
}
.error-message {
    background-color: #FFEBEE;
    color: var(--error-color);
    border: 1px solid var(--error-color);
}
.success-message {
    background-color: #E8F5E9;
    color: var(--success-color);
    border: 1px solid var(--success-color);
}


.controls-area {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    justify-content: space-between;
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

.controls-group {
    display: flex;
    flex-direction: column;
    gap: 12px;
    flex: 1 1 calc(50% - 10px);
    min-width: 280px;
}

.controls-group label {
    font-weight: 600;
    color: var(--light-text-color);
    display: block;
    margin-bottom: 5px;
    font-size: 0.9em;
}

.controls-group input[type="range"] {
    width: 100%;
    -webkit-appearance: none;
    appearance: none;
    height: 8px;
    background: var(--border-color);
    border-radius: 5px;
    outline: none;
    transition: opacity .2s;
    opacity: 0.9;
}
.controls-group input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--primary-color);
    cursor: pointer;
    box-shadow: 0 0 0 3px rgba(98, 0, 238, 0.2);
}
.controls-group input[type="range"]::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--primary-color);
    cursor: pointer;
    box-shadow: 0 0 0 3px rgba(98, 0, 238, 0.2);
}

.controls-group input[type="number"],
.controls-group select {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    font-size: 1em;
    outline: none;
    transition: border-color 0.2s;
}
.controls-group input[type="number"]:focus,
.controls-group select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(98, 0, 238, 0.1);
}

.controls-group button {
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--border-radius-sm);
    padding: 12px 18px;
    cursor: pointer;
    font-size: 0.95em;
    font-weight: 600;
    transition: background-color 0.2s;
    width: 100%;
}

.controls-group button:hover {
    background-color: #5500CC;
}

.reset-button {
    background-color: var(--secondary-color);
}
.reset-button:hover {
    background-color: #00A691;
}

.feature-info {
    margin-top: 30px;
    padding: 25px;
    background-color: #F3F6F9;
    border-radius: var(--border-radius-md);
    border: 1px solid #E0E6EC;
}

.feature-info h3 {
    color: var(--primary-color);
    margin-top: 0;
    margin-bottom: 15px;
    font-weight: 700;
}

.feature-info ul {
    list-style: none; /* Remove default bullets */
    margin-left: 0;
    padding-left: 0;
}
.feature-info ul li {
    position: relative;
    margin-bottom: 8px;
    padding-left: 25px; /* Space for custom bullet */
}
.feature-info ul li::before {
    content: '👉'; /* Custom bullet point */
    position: absolute;
    left: 0;
    color: var(--accent-color);
}

/* Responsive adjustments */
@media (max-width: 768px) {
    body {
        padding: 10px;
    }
    .container {
        margin: 10px;
        padding: 20px;
        gap: 15px;
    }
    .input-area {
        flex-direction: column;
        gap: 10px;
    }
    .input-area button {
        width: 100%;
    }
    .controls-area {
        flex-direction: column;
        gap: 15px;
    }
    .controls-group {
        flex: 1 1 100%;
    }
}