/* Global Styles */
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: #f5f5f5;
}

/* Login Page */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.login-card {
    background: white;
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    width: 100%;
    max-width: 400px;
}

.login-header {
    text-align: center;
    margin-bottom: 2rem;
}

.login-header h1 {
    color: #667eea;
    margin-bottom: 0.5rem;
}

.login-header p {
    margin-bottom: 0;
}

/* Cards */
.card {
    border: none;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
    border-radius: 0.75rem;
}

.card-header {
    background-color: #fff;
    border-bottom: 1px solid #eee;
    padding: 1rem 1.25rem;
}

.card-header h4 {
    margin: 0;
    font-size: 1.1rem;
}

/* Conversation Cards */
.conversation-card {
    transition: transform 0.2s, box-shadow 0.2s;
}

.conversation-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.12);
}

/* Stats Cards */
.stat-card {
    text-align: center;
    padding: 1rem;
    background: #f8f9fa;
    border-radius: 0.5rem;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: bold;
    color: #667eea;
}

.stat-label {
    font-size: 0.85rem;
    color: #6c757d;
}

/* Navbar */
.navbar-brand {
    font-weight: 600;
}

.navbar-dark .navbar-nav .nav-link {
    color: rgba(255, 255, 255, 0.8);
}

.navbar-dark .navbar-nav .nav-link:hover {
    color: white;
}

/* Messages Container */
.messages-container {
    margin-bottom: 1rem;
}

/* Buttons */
.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: none;
}

.btn-primary:hover {
    background: linear-gradient(135deg, #5a6fd6 0%, #6a4190 100%);
}

/* Form Controls */
.form-control:focus {
    border-color: #667eea;
    box-shadow: 0 0 0 0.2rem rgba(102, 126, 234, 0.25);
}

/* Badges */
.badge {
    font-weight: 500;
}

/* Responsive */
@media (max-width: 768px) {
    .chat-container {
        height: calc(100vh - 56px);
    }

    .message {
        max-width: 90%;
    }
}

/* Scrollbar */
.chat-messages::-webkit-scrollbar {
    width: 6px;
}

.chat-messages::-webkit-scrollbar-track {
    background: #f1f1f1;
}

.chat-messages::-webkit-scrollbar-thumb {
    background: #c1c1c1;
    border-radius: 3px;
}

.chat-messages::-webkit-scrollbar-thumb:hover {
    background: #a1a1a1;
}

/* Code blocks in messages */
.message-content pre {
    background: rgba(0, 0, 0, 0.1);
    padding: 0.5rem;
    border-radius: 0.25rem;
    overflow-x: auto;
    font-size: 0.85rem;
}

.message-content code {
    background: rgba(0, 0, 0, 0.1);
    padding: 0.1rem 0.3rem;
    border-radius: 0.2rem;
    font-size: 0.9em;
}

.message-user .message-content pre,
.message-user .message-content code {
    background: rgba(255, 255, 255, 0.2);
}