:root {
    --primary-blue: #0056b3;
    --light-blue: #e6f0fa;
    --dark-blue: #003d82;
    --bg-color: #f0f2f5;
    --text-color: #111b21;
    --card-bg: #ffffff;
    --border-color: #e9edef;
    --msg-bg: #d9fdd3;
    --msg-bg-other: #ffffff;
    --sidebar-width: 260px;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    height: 100vh;
    display: flex; /* Sidebar ve Ana Alan yan yana */
    overflow: hidden;
}

/* Ana Sol Menü (Global Sidebar) */
.global-sidebar {
    width: var(--sidebar-width);
    background-color: var(--dark-blue);
    color: white;
    display: flex;
    flex-direction: column;
    box-shadow: 2px 0 5px rgba(0,0,0,0.1);
    z-index: 50;
}

.sidebar-header {
    padding: 20px;
    text-align: center;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.sidebar-header h2 {
    font-size: 1.5rem;
    letter-spacing: 1px;
}

.nav-links {
    display: flex;
    flex-direction: column;
    padding: 10px 0;
}

.nav-btn {
    background: transparent;
    color: #b3d4ff;
    border: none;
    padding: 15px 20px;
    text-align: left;
    font-size: 1.1rem;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 10px;
}

.nav-btn:hover {
    background-color: rgba(255,255,255,0.1);
    color: white;
}

.nav-btn.active {
    background-color: var(--primary-blue);
    color: white;
    border-left: 4px solid white;
}

/* Sağ İçerik Alanı (Wrapper) */
.main-wrapper {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    position: relative;
}

.header {
    background-color: var(--primary-blue);
    color: white;
    padding: 1rem;
    text-align: center;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    z-index: 10;
    flex-shrink: 0;
}

.hidden-view {
    display: none !important;
}

.container {
    display: flex;
    flex: 1;
    overflow: hidden;
    width: 100%;
    background-color: var(--bg-color);
}

/* Konuşma Listesi (Sol Menü) */
.list-section {
    width: 350px;
    background-color: var(--card-bg);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    height: 100%;
}

.card-container {
    flex: 1;
    overflow-y: auto;
}

.conversation-btn {
    width: 100%;
    background-color: transparent;
    border: none;
    border-bottom: 1px solid var(--border-color);
    padding: 1rem;
    text-align: left;
    font-size: 1rem;
    color: var(--text-color);
    cursor: pointer;
    transition: background-color 0.2s;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.conversation-btn:hover {
    background-color: var(--bg-color);
}

.conversation-btn.active {
    background-color: var(--light-blue);
}

.btn-icon {
    font-size: 0.8em;
    color: #8696a0;
}

/* Modal / Detay Kısmı (Sağ Taraf) */
.detail-section {
    flex: 1;
    display: flex;
    flex-direction: column;
    background-color: #efeae2;
    height: 100%;
}

.hidden-desktop {
    visibility: hidden;
}

.detail-header {
    background-color: var(--card-bg);
    padding: 15px 20px;
    display: flex;
    align-items: center;
    gap: 15px;
    border-bottom: 1px solid var(--border-color);
}

#detail-title {
    color: var(--text-color);
    font-size: 1.2rem;
    font-weight: 500;
}

#back-btn {
    display: none;
}

.btn {
    padding: 0.5rem;
    border: none;
    background: transparent;
    cursor: pointer;
    font-weight: bold;
    color: var(--primary-blue);
    font-size: 1rem;
}

.messages-container {
    flex: 1;
    padding: 20px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.message-item {
    max-width: 80%;
    padding: 8px 12px;
    border-radius: 8px;
    background-color: var(--msg-bg-other);
    box-shadow: 0 1px 0.5px rgba(11,20,26,.13);
    align-self: flex-start;
}

.message-date {
    font-size: 0.7rem;
    color: #667781;
    margin-bottom: 4px;
    text-align: right;
}

.message-content {
    font-size: 0.95rem;
    line-height: 1.4;
    word-wrap: break-word;
}

/* Asistan Mesajları İçin Sağ Hizalama */
.asistan-msg {
    background-color: var(--msg-bg);
    align-self: flex-end;
}

.loading {
    text-align: center;
    padding: 2rem;
    color: #667781;
}

/* Diğer sayfalar için placeholder */
.placeholder-content {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: #667781;
}

.placeholder-content h2 {
    margin-bottom: 10px;
    color: var(--dark-blue);
}

/* Randevu Ekranı Tasarımı */
.calendar-wrapper {
    width: 100%;
    padding: 20px;
    overflow-y: auto;
    background-color: var(--bg-color);
}

.calendar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    background-color: var(--card-bg);
    padding: 15px 20px;
    border-radius: 8px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.calendar-header h2 {
    color: var(--dark-blue);
    font-size: 1.4rem;
}

.btn-save {
    background-color: #28a745;
    color: white;
}

.btn-secondary {
    color: #6c757d;
    border: 1px solid #ced4da;
}

.appointment-form {
    background-color: var(--card-bg);
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    margin-bottom: 20px;
}

.hidden-form {
    display: none;
}

.appointment-form h3 {
    margin-bottom: 15px;
    color: var(--text-color);
}

.form-group {
    margin-bottom: 15px;
    display: flex;
    flex-direction: column;
}

.form-row {
    display: flex;
    gap: 15px;
}

.form-row .form-group {
    flex: 1;
}

.form-group label {
    margin-bottom: 5px;
    font-size: 0.9rem;
    color: #495057;
    font-weight: 500;
}

.form-group input, .form-group textarea {
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 1rem;
}

.form-actions {
    display: flex;
    gap: 10px;
}

.appointments-list-container {
    background-color: var(--card-bg);
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.appointments-list-container h3 {
    margin-bottom: 15px;
    color: var(--text-color);
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 10px;
}

.apt-item {
    padding: 15px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    margin-bottom: 10px;
    border-left: 4px solid var(--primary-blue);
}

.apt-title {
    font-weight: bold;
    font-size: 1.1rem;
    margin-bottom: 5px;
}

.apt-time {
    color: #667781;
    font-size: 0.9rem;
}

/* Mobil Uyumluluk */
@media (max-width: 768px) {
    body {
        flex-direction: column;
    }
    
    .global-sidebar {
        width: 100%;
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
        padding: 0 10px;
    }
    
    .sidebar-header {
        padding: 10px;
        border: none;
    }
    
    .sidebar-header h2 {
        font-size: 1.2rem;
    }
    
    .nav-links {
        flex-direction: row;
        padding: 0;
    }
    
    .nav-btn {
        padding: 15px 10px;
        font-size: 0.9rem;
        border-left: none;
        border-bottom: 4px solid transparent;
    }
    
    .nav-btn.active {
        border-left: none;
        border-bottom: 4px solid white;
    }

    .list-section {
        width: 100%;
    }
    
    .detail-section {
        display: none;
        width: 100%;
        position: absolute;
        top: 0;
        left: 0;
        height: 100%;
        z-index: 60;
    }
    
    .detail-section.mobile-active {
        display: flex;
    }
    
    .list-section.mobile-hidden {
        display: none;
    }
    
    .hidden-desktop {
        visibility: visible;
    }

    #back-btn {
        display: flex;
        align-items: center;
    }
    
    .list-section.mobile-hidden ~ .header {
        display: none;
    }

    /* Mobilde form yan yana yerine alt alta gelsin */
    .form-row {
        flex-direction: column;
        gap: 10px;
    }

    /* Mobilde takvim kartı daha az padding alsın */
    .calendar-container-card {
        padding: 10px;
        min-height: 400px;
    }

    /* FullCalendar Başlık Kısmı Mobilde Sığsın */
    .fc .fc-toolbar {
        flex-direction: column;
        gap: 10px;
    }
    
    .fc-toolbar-chunk {
        display: flex;
        justify-content: center;
        flex-wrap: wrap;
        gap: 5px;
    }
}

/* --- FULLCALENDAR GÜNCELLEMESİ --- */
.calendar-container-card {
    background-color: var(--card-bg);
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    min-height: 600px;
    margin-bottom: 30px;
}

#calendar {
    font-family: 'Inter', sans-serif;
}

.fc .fc-button-primary {
    background-color: var(--primary-blue) !important;
    border-color: var(--primary-blue) !important;
}

.fc .fc-button-primary:hover {
    background-color: var(--dark-blue) !important;
    border-color: var(--dark-blue) !important;
}

.fc-toolbar-title {
    color: var(--dark-blue) !important;
    font-weight: 600 !important;
}

.supabase-error {
    background: #fff5f5;
    color: #c53030;
    padding: 15px;
    border-radius: 8px;
    border: 1px solid #feb2b2;
    margin-bottom: 20px;
    font-size: 0.9rem;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.hidden-view {
    display: none !important;
}