body, html {
    height: 100%;
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', sans-serif;
    background-color: #f8f9fa;
}

/* Ana kapsayıcı düzen */
.chat-wrapper {
    display: flex;
    flex-direction: column;
    height: calc(100vh - 56px); /* navbar dışında kalan alan */
}

/* Sohbet alanı (scroll burada) */
#chat-box {
    flex: 1;
    overflow-y: auto;
    background-color: #ffffff;
    border: 1px solid #dee2e6;
    border-radius: 10px;
    padding: 1rem;
    margin-bottom: 1rem;
}

.chat-container {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}


/* Mesaj stilleri */
.message {
    margin-bottom: 1rem;
    line-height: 1.6;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    max-width: 85%;
}

.message.user {
    text-align: right;
    margin-left: auto;
    background-color: #e6f0ff;
    color: #0d6efd;
}

.message.assistant {
    text-align: left;
    margin-right: auto;
    background-color: #f1f3f5;
    color: #212529;
}

/* Form sabit, sayfa altına yakın kalır */
.chat-form-wrapper {
    display: flex;
    align-items: stretch;
    gap: 0;
}

textarea.form-control {
    resize: none;
    min-height: 70px;
    border-radius: 0.5rem 0 0 0.5rem;
    border: 1px solid #ced4da;
    flex: 1;
    padding: 0.75rem;
}

button.btn-send {
    border-radius: 0 0.5rem 0.5rem 0;
    padding: 0.75rem 1.25rem;
    border: 1px solid #ced4da;
    border-left: none;
    background-color: #0d6efd;
    color: white;
    font-weight: 500;
}

/* Navbar */
.navbar-brand {
    font-weight: bold;
    font-size: 1.4rem;
}