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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: linear-gradient(135deg, #1976d2 0%, #000000 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.login-popup {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 20px;
    padding: 2rem;
    width: 90%;
    max-width: 400px;
    position: relative;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.close-btn {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: #666;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.close-btn:hover {
    background: rgba(0, 0, 0, 0.1);
    color: #333;
}

.logo-container {
    text-align: center;
    margin-bottom: 2rem;
}

.logo-image {
    height: 60px;
    width: auto;
    max-width: 180px;
    object-fit: contain;
    border-radius: 12px;
    margin-bottom: 1rem;
    border: 2px solid rgba(25, 118, 210, 0.2);
}

.logo-container h2 {
    color: #1976d2;
    font-size: 1.5rem;
    font-weight: 700;
}

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

.login-form h3 {
    color: #333;
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.login-form p {
    color: #666;
    margin-bottom: 2rem;
    font-size: 0.9rem;
}

/* Google OAuth Button Styling */
.g_id_signin {
    margin-bottom: 1.5rem;
    width: 100%;
}

/* Custom styling for Google button */
.google-signin-custom {
    width: 100% !important;
}

.google-signin-custom > div {
    width: 100% !important;
    height: auto !important;
}

.google-signin-custom iframe {
    width: 100% !important;
    height: 48px !important;
}

/* Ensure Google button matches demo button size */
.g_id_signin > div {
    width: 100% !important;
    height: auto !important;
}

.g_id_signin iframe {
    width: 100% !important;
    height: 48px !important;
}

.divider {
    position: relative;
    margin: 1.5rem 0;
    text-align: center;
}

.divider::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background: #ddd;
}

.divider span {
    background: rgba(255, 255, 255, 0.95);
    padding: 0 1rem;
    color: #666;
    font-size: 0.9rem;
}

.demo-login {
    margin-top: 1rem;
}

.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 25px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
    font-size: 0.9rem;
}

.btn-demo {
    background: linear-gradient(135deg, #1976d2 0%, #1565c0 100%);
    color: white;
    width: 100%;
}

.btn-demo:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(25, 118, 210, 0.3);
}

.login-footer {
    margin-top: 2rem;
    text-align: center;
    padding-top: 1rem;
    border-top: 1px solid #eee;
}

.login-footer p {
    color: #666;
    font-size: 0.8rem;
    line-height: 1.4;
}

.login-footer a {
    color: #3b82f6;
    text-decoration: none;
}

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

/* Responsive Design */
@media (max-width: 480px) {
    .login-popup {
        padding: 1.5rem;
        margin: 1rem;
        width: 95%;
        max-width: 350px;
    }
    
    .logo-image {
        width: 50px;
        height: 50px;
    }
    
    .logo-container h2 {
        font-size: 1.25rem;
    }
    
    .g_id_signin {
        width: 100% !important;
        max-width: 300px !important;
    }
    
    .btn {
        width: 100%;
        padding: 12px 16px;
        font-size: 16px;
    }
}

/* Mobile-specific improvements */
@media (max-width: 768px) {
    .login-popup {
        margin: 0.5rem;
        border-radius: 15px;
    }
    
    .g_id_signin {
        width: 100% !important;
    }
    
    /* Ensure Google OAuth button is touch-friendly */
    .g_id_signin iframe {
        width: 100% !important;
        height: 50px !important;
    }
}

/* Mobile Google Button Styles */
.mobile-google-btn {
    width: 100%;
    margin: 10px 0;
}

.btn-google {
    width: 100%;
    padding: 12px 16px;
    background: white;
    border: 2px solid #dadce0;
    border-radius: 8px;
    color: #3c4043;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    transition: all 0.3s ease;
    min-height: 50px;
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
}

.btn-google:hover {
    background: #f8f9fa;
    border-color: #c1c7cd;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.btn-google:active {
    background: #f1f3f4;
    transform: translateY(1px);
}

.google-icon {
    flex-shrink: 0;
}

.google-signin-container {
    width: 100%;
    margin: 10px 0;
}

/* Ensure Google OAuth iframe is clickable on mobile */
.g_id_signin {
    width: 100% !important;
    min-height: 50px !important;
}

.g_id_signin iframe {
    width: 100% !important;
    height: 50px !important;
    border: none !important;
    border-radius: 8px !important;
    pointer-events: auto !important;
    touch-action: manipulation !important;
}

/* Mobile Chrome specific fixes */
@media screen and (-webkit-min-device-pixel-ratio: 0) {
    .g_id_signin iframe {
        -webkit-transform: translateZ(0) !important;
        transform: translateZ(0) !important;
    }
    
    .btn-google {
        -webkit-appearance: none !important;
        -webkit-tap-highlight-color: transparent !important;
    }
}