/* ============================================
   AI Sohbet Uygulaması - Ana Stil Dosyası
   Karanlık Tema - Modern Tasarım
   ============================================ */

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

:root {
    /* Renkler */
    --bg-primary: #0a0e27;
    --bg-secondary: #151932;
    --bg-tertiary: #1e2139;
    --bg-hover: #252d48;
    
    --text-primary: #e0e0e0;
    --text-secondary: #a0a0a0;
    --text-tertiary: #707070;
    
    --accent-primary: #00d4ff;
    --accent-secondary: #0099cc;
    --accent-hover: #00b8e6;
    
    --border-color: #2a2f48;
    --border-light: #353d5c;
    
    --success: #4caf50;
    --error: #ff6b6b;
    --warning: #ffc107;
    
    /* Boyutlar */
    --sidebar-width: 280px;
    --header-height: 60px;
    --border-radius: 8px;
    --transition: all 0.3s ease;
    
    /* Gölgeler */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.4);
}

html, body {
    height: 100%;
    width: 100%;
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    font-size: 14px;
    line-height: 1.5;
    overflow: hidden;
}

/* ============================================
   Genel Bileşenler
   ============================================ */

.app-container {
    width: 100%;
    height: 100vh;
    display: flex;
}

/* Butonlar */
.btn {
    padding: 10px 16px;
    border: none;
    border-radius: var(--border-radius);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-primary {
    background-color: var(--accent-primary);
    color: var(--bg-primary);
}

.btn-primary:hover {
    background-color: var(--accent-hover);
}

.btn-secondary {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-light);
}

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

.btn-block {
    width: 100%;
    justify-content: center;
}

.btn-icon {
    width: 40px;
    height: 40px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: transparent;
    color: var(--text-secondary);
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
}

.btn-icon:hover {
    background-color: var(--bg-hover);
    color: var(--text-primary);
}

.btn-send {
    background-color: var(--accent-primary);
    color: var(--bg-primary);
}

.btn-send:hover {
    background-color: var(--accent-hover);
}

/* Form */
.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    margin-bottom: 6px;
    color: var(--text-primary);
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 10px 12px;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    color: var(--text-primary);
    font-size: 14px;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

/* ============================================
   Kimlik Doğrulama Sayfası
   ============================================ */

.auth-container {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}

.auth-card {
    width: 100%;
    max-width: 400px;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 32px;
    box-shadow: var(--shadow-lg);
}

.auth-header {
    text-align: center;
    margin-bottom: 32px;
}

.auth-header h1 {
    font-size: 28px;
    color: var(--accent-primary);
    margin-bottom: 8px;
}

.auth-header p {
    color: var(--text-secondary);
}

.auth-tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 24px;
    border-bottom: 1px solid var(--border-color);
}

.tab-btn {
    flex: 1;
    padding: 12px;
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-weight: 500;
    border-bottom: 2px solid transparent;
    transition: var(--transition);
}

.tab-btn.active {
    color: var(--accent-primary);
    border-bottom-color: var(--accent-primary);
}

.auth-form {
    display: none;
}

.auth-form.active {
    display: block;
}

/* ============================================
   Chat Layout
   ============================================ */

.chat-layout {
    display: flex;
    width: 100%;
    height: 100%;
}

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background-color: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.sidebar-header {
    padding: 16px;
    border-bottom: 1px solid var(--border-color);
}

.app-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--accent-primary);
    margin-bottom: 12px;
}

.conversations-list {
    flex: 1;
    overflow-y: auto;
    padding: 8px;
}

.conversation-item {
    padding: 12px;
    margin-bottom: 6px;
    background-color: transparent;
    border: 1px solid transparent;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
}

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

.conversation-item.active {
    background-color: rgba(0, 212, 255, 0.1);
    border-color: var(--accent-primary);
}

.conversation-title {
    flex: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    color: var(--text-primary);
}

.conversation-actions {
    display: flex;
    gap: 4px;
    opacity: 0;
    transition: var(--transition);
}

.conversation-item:hover .conversation-actions {
    opacity: 1;
}

.conversation-actions button {
    width: 28px;
    height: 28px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    border-radius: 4px;
    transition: var(--transition);
}

.conversation-actions button:hover {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
}

.loading {
    text-align: center;
    color: var(--text-secondary);
    padding: 20px;
}

.sidebar-footer {
    padding: 16px;
    border-top: 1px solid var(--border-color);
    background-color: var(--bg-tertiary);
}

.user-info {
    display: flex;
    gap: 12px;
    margin-bottom: 12px;
}

.user-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--accent-primary);
    color: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 16px;
}

.user-details {
    flex: 1;
    min-width: 0;
}

.user-name {
    font-weight: 600;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.user-email {
    font-size: 12px;
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.user-actions {
    display: flex;
    gap: 8px;
}

/* Chat Main */
.chat-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.chat-container {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 32px;
    overflow-y: auto;
}

.chat-empty {
    text-align: center;
    color: var(--text-secondary);
}

.empty-icon {
    margin-bottom: 16px;
    opacity: 0.5;
}

.chat-empty h2 {
    color: var(--text-primary);
    margin-bottom: 8px;
}

.messages-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.messages-container {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

/* Mesajlar */
.message {
    display: flex;
    margin-bottom: 12px;
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

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

.message-content {
    max-width: 70%;
    padding: 12px 16px;
    border-radius: var(--border-radius);
    word-wrap: break-word;
}

.message.user .message-content {
    background-color: var(--accent-primary);
    color: var(--bg-primary);
}

.message.assistant .message-content {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.message-time {
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: 4px;
}

/* Input Area */
.input-area {
    padding: 16px;
    border-top: 1px solid var(--border-color);
    background-color: var(--bg-secondary);
}

.input-wrapper {
    display: flex;
    gap: 12px;
    align-items: flex-end;
}

.message-input {
    flex: 1;
    padding: 10px 12px;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    color: var(--text-primary);
    font-size: 14px;
    font-family: inherit;
    resize: none;
    max-height: 120px;
    transition: var(--transition);
}

.message-input:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background-color: transparent;
}

::-webkit-scrollbar-thumb {
    background-color: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background-color: var(--border-light);
}

/* ============================================
   Responsive Design
   ============================================ */

@media (max-width: 768px) {
    :root {
        --sidebar-width: 0;
    }
    
    .sidebar {
        position: fixed;
        left: 0;
        top: 0;
        height: 100%;
        width: 280px;
        z-index: 1000;
        transform: translateX(-100%);
        transition: var(--transition);
    }
    
    .sidebar.open {
        transform: translateX(0);
    }
    
    .message-content {
        max-width: 85%;
    }
    
    .auth-card {
        margin: 16px;
    }
}

@media (max-width: 480px) {
    .message-content {
        max-width: 95%;
    }
    
    .sidebar {
        width: 100%;
    }
    
    .auth-card {
        padding: 24px 16px;
    }
}

/* ============================================
   Utility Classes
   ============================================ */

.hidden {
    display: none !important;
}

.opacity-50 {
    opacity: 0.5;
}

.text-center {
    text-align: center;
}

.mt-4 {
    margin-top: 16px;
}

.mb-4 {
    margin-bottom: 16px;
}

.icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
}