/* Genel Ayarlar */
:root {
    --primary-color: #007bff;
    /* Mavi */
    --secondary-color: #6c757d;
    /* Gri */
    --success-color: #28a745;
    /* Yeşil */
    --danger-color: #dc3545;
    /* Kırmızı */
    --background-color: #f8f9fa;
    /* Açık gri */
    --card-bg-color: #ffffff;
    /* Kart arka planı */
    --dark-text: #212529;
    /* Koyu metin */
    --light-text: #6c757d;
    /* Açık metin */
    --border-color: #e2e8f0;
    /* Kenarlık rengi */
    --box-shadow-light: 0 4px 6px rgba(0, 0, 0, 0.05);
    --box-shadow-hover: 0 10px 15px rgba(0, 0, 0, 0.1);
    --font-family-sans-serif: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

body {
    background-color: var(--background-color);
    font-family: var(--font-family-sans-serif);
    color: var(--dark-text);
}

/* --- Genel Utility Sınıfları --- */

.mt-5 {
    margin-top: 3rem !important;
}

.text-primary {
    color: var(--primary-color) !important;
}

.text-success {
    color: var(--success-color) !important;
}

.text-danger {
    color: var(--danger-color) !important;
}

/* --- Navbar Stilleri --- */

.navbar {
    background-color: var(--card-bg-color);
    box-shadow: var(--box-shadow-light);
    border-bottom: 2px solid var(--primary-color);
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.6rem;
    color: var(--dark-text);
    transition: color 0.3s ease;
}

.navbar-brand:hover {
    color: var(--primary-color);
}

/* --- Kart Stilleri --- */

.card {
    border: none;
    border-radius: 12px;
    background-color: var(--card-bg-color);
    box-shadow: var(--box-shadow-light);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: var(--box-shadow-hover);
}

.card-header {
    background-color: transparent;
    border-bottom: none;
    padding-bottom: 0;
}

.card-title {
    color: var(--primary-color);
    font-weight: 600;
}

.card-subtitle {
    color: var(--light-text);
}

/* --- Buton Stilleri --- */

.btn {
    border-radius: 50px;
    padding: 0.75rem 1.5rem;
    font-weight: 600;
    cursor: pointer;
    text-align: center;
    transition: background-color 0.3s ease, transform 0.1s ease;
}

.btn-primary {
    background-color: var(--primary-color);
    border: 1px solid var(--primary-color);
    color: #fff;
}

.btn-primary:hover {
    background-color: #0069d9;
    border-color: #0062cc;
    transform: translateY(-2px);
}

.btn-success {
    background-color: var(--success-color);
    border: 1px solid var(--success-color);
    color: #fff;
}

.btn-success:hover {
    background-color: #218838;
    border-color: #1e7e34;
    transform: translateY(-2px);
}

/* --- Form Stilleri --- */

.form-control {
    border-radius: 8px;
    border: 1px solid var(--border-color);
    padding: 0.75rem 1rem;
    font-size: 1rem;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.25);
    outline: none;
}

/* --- Flash Mesajları --- */

.alert {
    border-radius: 8px;
    box-shadow: var(--box-shadow-light);
}

/* --- Sohbet Stilleri --- */

.chat-window {
    max-height: 500px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
}

.message-bubble-primary,
.message-bubble-light {
    padding: 12px 16px;
    border-radius: 20px;
    max-width: 75%;
    word-wrap: break-word;
    /* Uzun kelimeleri kırmak için */
    margin-bottom: 8px;
}

.message-bubble-primary {
    background-color: var(--primary-color);
    color: #fff;
    align-self: flex-end;
    /* Gönderen mesajları sağa hizala */
}

.message-bubble-light {
    background-color: var(--card-bg-color);
    border: 1px solid #e9ecef;
    align-self: flex-start;
    /* Alıcı mesajları sola hizala */
}

.message-info {
    font-size: 0.75rem;
    color: var(--light-text);
    margin-bottom: 2px;
}

.message-content {
    font-size: 1rem;
    line-height: 1.4;
    word-wrap: break-word;
}

.message-status-icon {
    font-size: 0.75rem;
    line-height: 1;
    margin-left: 5px;
}

.message-bubble-primary .message-status-icon {
    color: rgba(255, 255, 255, 0.7);
}

.double-check {
    color: #64B5F6;
    /* Mavi tik rengi */
}