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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
}

.container {
    max-width: 100%;
    margin: 0 auto;
}

/* Flash Messages */
.flash-messages {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1000;
    max-width: 400px;
}

.flash-message {
    padding: 12px 16px;
    margin-bottom: 10px;
    border-radius: 8px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.flash-success {
    background: #4caf50;
    color: white;
}

.flash-error {
    background: #f44336;
    color: white;
}

.flash-info {
    background: #2196f3;
    color: white;
}

.flash-close {
    background: none;
    border: none;
    color: inherit;
    font-size: 20px;
    cursor: pointer;
    margin-left: 12px;
    opacity: 0.8;
}

.flash-close:hover {
    opacity: 1;
}

/* Logo Styles */
.logo-container {
    text-align: center;
    margin-bottom: 20px;
}

.logo {
    max-width: 200px;
    max-height: 100px;
    object-fit: contain;
    margin-bottom: 15px;
}

.company-name {
    color: #667eea;
    margin-bottom: 8px;
    font-size: 24px;
    text-align: center;
}

.header-logo {
    max-height: 50px;
    max-width: 150px;
    object-fit: contain;
    margin-right: 15px;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 15px;
}

.header-left h1 {
    margin: 0;
    color: #667eea;
    font-size: 22px;
}

.header-subtitle {
    margin: 0;
    color: #666;
    font-size: 12px;
    font-weight: normal;
}

/* Auth Pages */
.auth-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: calc(100vh - 40px);
}

.auth-card {
    background: white;
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 400px;
}

.auth-card .company-name {
    color: #667eea;
    margin-bottom: 8px;
    font-size: 24px;
    text-align: center;
}

.auth-card h2 {
    color: #333;
    margin-bottom: 10px;
    font-size: 20px;
    font-weight: 400;
}

.login-info {
    color: #666;
    font-size: 14px;
    margin-bottom: 30px;
    text-align: center;
}

.error-message {
    padding: 15px;
    background: #fff3cd;
    border-left: 4px solid #ffc107;
    border-radius: 4px;
    color: #856404;
    margin-top: 20px;
}

.auth-form {
    margin-bottom: 20px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: #333;
    font-weight: 500;
}

.form-group input {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-size: 14px;
    transition: border-color 0.2s;
}

.form-group input:focus {
    outline: none;
    border-color: #667eea;
}

.form-group small {
    display: block;
    margin-top: 4px;
    color: #666;
    font-size: 12px;
}

.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
    display: inline-block;
    text-align: center;
}

.btn-primary {
    background: #667eea;
    color: white;
    width: 100%;
}

.btn-primary:hover {
    background: #5568d3;
}

.btn-google {
    background: white;
    color: #333;
    border: 1px solid #ddd;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.btn-google:hover {
    background: #f5f5f5;
}

.btn-secondary {
    background: #6c757d;
    color: white;
    padding: 8px 16px;
    font-size: 13px;
}

.btn-secondary:hover {
    background: #5a6268;
}

.divider {
    text-align: center;
    margin: 20px 0;
    position: relative;
}

.divider::before,
.divider::after {
    content: '';
    position: absolute;
    top: 50%;
    width: 45%;
    height: 1px;
    background: #ddd;
}

.divider::before {
    left: 0;
}

.divider::after {
    right: 0;
}

.divider span {
    background: white;
    padding: 0 10px;
    color: #666;
    position: relative;
}

.auth-footer {
    text-align: center;
    margin-top: 20px;
    color: #666;
}

.auth-footer a {
    color: #667eea;
    text-decoration: none;
}

.auth-footer a:hover {
    text-decoration: underline;
}

/* App Header */
.app-header {
    background: white;
    padding: 20px;
    border-radius: 8px;
    margin-bottom: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.app-header h1 {
    color: #667eea;
    font-size: 24px;
}

.user-menu {
    display: flex;
    align-items: center;
    gap: 15px;
}

.user-menu span {
    color: #666;
}

/* Footer */
.app-footer {
    text-align: center;
    padding: 20px;
    margin-top: 30px;
    color: rgba(255, 255, 255, 0.8);
    font-size: 13px;
}

.app-footer p {
    margin: 5px 0;
}

.developer-credit {
    font-size: 11px;
    opacity: 0.7;
    font-style: italic;
}

/* Responsive */
@media (max-width: 768px) {
    .chat-container {
        flex-direction: column;
        height: calc(100vh - 120px);
    }
    
    .users-sidebar {
        width: 100%;
        height: 200px;
        border-right: none;
        border-bottom: 1px solid #e0e0e0;
    }
    
    .app-header {
        flex-direction: column;
        gap: 15px;
        align-items: flex-start;
    }
}