:root {
    /* AOK Corporate Design Farben */
    --primary-color: #005e4d;        /* AOK Dunkelgrün */
    --secondary-color: #004438;      /* AOK Dunkelgrün (dunkler) */
    --accent-color: #b2d235;         /* AOK Hellgrün/Gelb */
    --success-color: #28a745;
    --warning-color: #ffc107;
    --error-color: #dc3545;
    --text-primary: #333333;
    --text-secondary: #666666;
    --text-light: #999999;
    --background: #ffffff;
    --background-light: #f8f9fa;
    --border-color: #e1e8ed;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    --radius: 8px;
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

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

body {
    font-family: var(--font-family);
    background-color: var(--background-light);
    color: var(--text-primary);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background-color: var(--background);
    box-shadow: var(--shadow);
}

/* Header */
.header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 1.5rem 2rem;
    border-bottom: 2px solid var(--border-color);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.aok-wortmarke,
.aok-lebensbaum {
    height: 32px;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
}

.logo-text h1 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.logo-text p {
    font-size: 0.9rem;
    opacity: 0.9;
    font-weight: 300;
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--warning-color);
    animation: pulse 2s infinite;
}

.status-dot.connected {
    background-color: var(--success-color);
    animation: none;
}

.status-dot.error {
    background-color: var(--error-color);
    animation: none;
}

@keyframes pulse {
    0% { opacity: 1; }
    50% { opacity: 0.5; }
    100% { opacity: 1; }
}

/* Chat Container */
.chat-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    max-height: calc(100vh - 200px);
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 1.5rem;
    scroll-behavior: smooth;
}

.message {
    display: flex;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
    animation: fadeIn 0.3s ease-out;
}

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

.message-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.bot-message .message-avatar {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
}

.user-message {
    flex-direction: row-reverse;
}

.user-message .message-avatar {
    background-color: var(--background-light);
    border: 2px solid var(--border-color);
}

.message-content {
    flex: 1;
    background-color: var(--background);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 1rem;
    max-width: 70%;
}

.user-message .message-content {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.message-content p {
    margin-bottom: 0.75rem;
}

.message-content p:last-child {
    margin-bottom: 0;
}

.message-content ul {
    margin: 0.5rem 0;
    padding-left: 1.25rem;
}

.message-content li {
    margin-bottom: 0.25rem;
}

.message-content strong {
    font-weight: 600;
}

.message-content a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.2s ease;
    border-bottom: 1px solid transparent;
}

.message-content a:hover {
    color: var(--secondary-color);
    border-bottom-color: var(--primary-color);
}

.message-content a:visited {
    color: var(--primary-color);
}

/* Notfall-Hervorhebungen */
.message.emergency-critical {
    animation: emergencyPulse 2s ease-in-out infinite;
}

.message.emergency-critical .message-content {
    background-color: #fff3f3;
    border: 2px solid #dc3545;
    border-left: 5px solid #dc3545;
}

.message.emergency-urgent .message-content {
    background-color: #fff8e1;
    border: 2px solid #ff9800;
    border-left: 5px solid #ff9800;
}

@keyframes emergencyPulse {
    0%, 100% {
        box-shadow: 0 0 0 0 rgba(220, 53, 69, 0.4);
    }
    50% {
        box-shadow: 0 0 15px 5px rgba(220, 53, 69, 0.2);
    }
}

/* Chat Input */
.chat-input-container {
    border-top: 1px solid var(--border-color);
    background-color: var(--background);
    padding: 1rem 1.5rem;
}

.chat-input-wrapper {
    display: flex;
    gap: 0.75rem;
    align-items: flex-end;
    background-color: var(--background-light);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 0.75rem;
    transition: border-color 0.2s ease;
}

.chat-input-wrapper:focus-within {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

#messageInput {
    flex: 1;
    border: none;
    background: transparent;
    resize: none;
    font-family: var(--font-family);
    font-size: 0.95rem;
    line-height: 1.5;
    max-height: 120px;
    overflow-y: auto;
}

#messageInput:focus {
    outline: none;
}

#messageInput::placeholder {
    color: var(--text-light);
}

.send-button {
    background-color: var(--accent-color);  /* AOK Hellgrün */
    color: var(--primary-color);             /* Dunkelgrüner Text */
    border: none;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
    font-weight: 600;
}

.send-button:hover:not(:disabled) {
    background-color: #9fc02a;              /* Hellgrün etwas dunkler */
    transform: scale(1.05);
}

.send-button:disabled {
    background-color: var(--text-light);
    color: white;
    cursor: not-allowed;
    transform: none;
}

.input-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 0.5rem;
    font-size: 0.8rem;
    color: var(--text-light);
}

.typing-indicator {
    color: var(--primary-color);
    font-style: italic;
}

/* Footer */
.footer {
    background-color: var(--background-light);
    border-top: 1px solid var(--border-color);
    padding: 1rem 2rem;
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        margin: 0;
        border-radius: 0;
        min-height: 100vh;
    }

    .header {
        padding: 1rem;
    }

    .header-content {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }

    .logo h1 {
        font-size: 1.5rem;
    }

    .logo {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }

    .aok-logo {
        width: 70px;
        height: 28px;
    }

    .chat-messages {
        padding: 1rem;
    }

    .message-content {
        max-width: 85%;
    }

    .chat-input-container {
        padding: 1rem;
    }

    .footer {
        padding: 1rem;
    }
}

@media (max-width: 480px) {
    .message-content {
        max-width: 90%;
    }

    .logo-text h1 {
        font-size: 1.25rem;
    }

    .logo-text p {
        font-size: 0.8rem;
    }

    .aok-wortmarke,
    .aok-lebensbaum {
        height: 24px;
    }
}

/* Loading States */
.loading {
    opacity: 0.7;
    pointer-events: none;
}

.message.loading .message-content::after {
    content: '';
    display: inline-block;
    width: 12px;
    height: 12px;
    border: 2px solid var(--border-color);
    border-top: 2px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-left: 0.5rem;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

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

.chat-messages::-webkit-scrollbar-track {
    background: var(--background-light);
}

.chat-messages::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}

.chat-messages::-webkit-scrollbar-thumb:hover {
    background: var(--text-light);
}